WO2022213950A1

WO2022213950A1 - Data transmission method, apparatus, and system

Info

Publication number: WO2022213950A1
Application number: PCT/CN2022/085177
Authority: WO
Inventors: 栗忠峰; 张长; 李斌
Original assignee: 华为技术有限公司
Priority date: 2021-04-06
Filing date: 2022-04-02
Publication date: 2022-10-13
Also published as: CN115189808A

Abstract

Embodiments of the present application provide a data transmission method, apparatus, and system, used for improving data transmission efficiency and data transmission reliability in repeated data transmission. The method comprises: obtaining N data packets for repeated transmission, N being a positive integer, and N≥2; jointly encoding the N data packets to obtain jointly encoded data packets, each jointly encoded data packet being obtained by joint encoding of at least two data packets among the N data packets; determining a first time-frequency resource for transmitting the jointly encoded data packets; and sending the jointly encoded data packets to a second communication apparatus on the first time-frequency resource. The present application is applied to the technical field of communications.

Description

Data transmission method, device and system

This application claims the priority of the Chinese patent application with the application number 202110368606.0 and the application title "Data Transmission Method, Device and System", which was submitted to the State Intellectual Property Office on April 6, 2021, the entire contents of which are incorporated into this application by reference middle.

technical field

The present application relates to the field of communications, and in particular, to a data transmission method, device, and system.

Background technique

With the development of communication technology and the demands of services, the requirements of services on the reliability of data transmission in the communication system are also increased. The current fifth generation mobile communication technology (5th generation, 5G) requires a data transmission rate of 99.999% or 99.9999% for the reliability of data transmission. With the continuous advancement of the 5G system, the 6th generation (6G)-oriented services will further increase the reliability of data transmission, such as requiring 99.9999999% of the correct data transmission rate. Therefore, in the prior art, in order to enhance the reliability of data transmission, the 5G system can perform repeated transmission during data transmission, for example, repeated transmission based on a configured grant (CG).

Configuration authorization is also known as grant free. Compared with traditional technologies, the sender's CG-based data transmission does not need to send scheduling requests to other devices before data transmission, and can directly use Radio Resource Control (RRC) The data transmission resources configured by signaling reduce the delay. Among them, different senders can share the configured data transmission resources and randomly select resources for data transmission. Fig. 1 is a schematic diagram of CG-based repeated data transmission in the prior art. As shown in Fig. 1 , on the configuration resources of CG1, the sender repeatedly transmits the data packet 1 arriving at time 1 for 4 times, and on the configuration resources of CG2 The sender repeats the transmission 4 times for the data packet 2 that arrives at time 2. The start times of the configurations of CG1 and CG2 are staggered, so as to provide transmission opportunities for data packets with different arrival times.

In addition, in the prior art, there are also schemes for repeated data transmission, such as repeated transmission based on multiple transceiver nodes. However, it can be seen from the above that the current method of repeatedly transmitting data in the 5G system is to repeat the transmission of different data packets that need to be transmitted independently, and the efficiency of resource use is not high. In addition, for further business requirements, the reliability of data transmission needs to be further improved in the future.

Therefore, how to improve resource utilization efficiency and data transmission reliability during repeated data transmission is an urgent problem to be solved at present.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a data transmission method, device, and system, which are used to improve data transmission efficiency and data transmission reliability when data is repeatedly transmitted.

To achieve the above object, the embodiments of the present application adopt the following technical solutions:

In a first aspect, a method for data transmission is provided, the method comprising: acquiring N data packets for repeated transmission by a first communication device, where N is a positive integer and N≥2; performing joint encoding to obtain at least one joint encoding data packet; wherein, each joint encoding data packet is obtained by joint encoding of at least two data packets in the N data packets; the first communication device is determined to be used for transmitting joint encoding data the first time-frequency resource of the packet; the first communication device sends the jointly encoded data packet to the second communication device on the first time-frequency resource. Based on the data transmission method provided by the embodiment of the present application, the first communication device can jointly encode the data packets originally used for independent repeated transmission, and transmit the obtained jointly encoded data packets, which increases the diversity degree of each data packet, and can Using the same resources to achieve a higher diversity order improves the efficiency of resource use and the reliability of data transmission.

With reference to the above-mentioned first aspect, in a possible implementation manner, the first communication device performing joint encoding on the N data packets respectively includes: the first communication device jointly encoding the N data packets according to at least one of the following parameters: N data packets: The size of each data packet in the data packet, the number of data packets involved in joint coding, the number of repeated transmissions of each data packet, the number of jointly coded data packets, the coding coefficients used for joint coding of N data packets, the coding The size of the field corresponding to the coefficient, the redundancy version configuration of each data packet, the sending start time corresponding to each data packet in the N data packets, and the sending end time corresponding to each data packet in the N data packets. Since this scheme jointly encodes N data packets, the size of each data packet in the N data packets, the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, and the jointly encoded data are considered. The number of packets, the coding coefficients that jointly encode the N data packets, the size of the fields corresponding to the coding coefficients, the redundancy version configuration of each data packet, the corresponding sending start time of each of the N data packets, and The transmission end time and other factors can therefore make the first communication apparatus more comprehensive when performing joint coding, thereby increasing the diversity degree and coding gain of the jointly coded data packet.

With reference to the above-mentioned first aspect, in a possible implementation manner, the coding coefficient is a coding coefficient preconfigured by the first communication device; or, the coding coefficient is determined by the first communication device according to the set of coding coefficients; or, the coding coefficient is Determined by the first communication device according to at least one of the following parameters: the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of jointly encoded data packets or the size of the field corresponding to the encoding coefficient. The scheme provides a variety of methods for determining coding coefficients and is suitable for a variety of different scenarios.

With reference to the above-mentioned first aspect, in a possible implementation manner, the above-mentioned at least one parameter is pre-configured by the first communication device; or, the method further includes: the first communication device receives communication from the second communication device or the third communication device. First parameter information of the device, where the first parameter information includes the above at least one parameter. Based on this solution, since the first communication device determines the coding coefficients for jointly encoding the N data packets according to the parameter information sent by the second communication device, the coding coefficients determined by the first communication device can be made more in line with the requirements of the second communication device .

With reference to the above-mentioned first aspect, in a possible implementation manner, the method further includes: the first communication device sends the coding coefficients to the second communication device, and the coding coefficients are used by the second communication device to combine the data from the first communication device. Encoded packets are decoded. Based on the data transmission method provided by the embodiment of the present application, since the first communication device can send the jointly encoded coding coefficients to the second communication device, the second communication device can quickly and accurately encode the received joint encoding according to the coding coefficients. The data packet is decoded, which saves communication resources and improves the decoding efficiency.

With reference to the above first aspect, in a possible implementation manner, the method further includes: the first communication device receives first indication information from the second communication device or the third communication device, where the first indication information is used to indicate the first Whether the communication apparatus performs joint coding, and/or the first indication information is used to indicate a coding manner in which the first communication apparatus performs joint coding. Based on the data transmission method provided in this embodiment of the present application, the first communication device can be made to perform joint coding according to the received first indication information, and the first indication information can indicate whether the first communication device performs joint coding and/or a manner of joint coding, It is avoided that the second communication device cannot decode the jointly encoded data packet sent by the first communication device, thereby avoiding waste of communication resources.

With reference to the above-mentioned first aspect, in a possible implementation manner, the method further includes: the first communication apparatus receives second indication information from the second communication apparatus, where the second indication information is used to instruct the first communication apparatus to stop sending the joint transmission encoding the data packet, or the second indication information is used to indicate that the second communication device has correctly received the joint encoded data packet, or the second indication information is used to instruct the first communication device to start a new joint encoding; the first communication device according to the second indication information, stop sending joint coding packets or prepare for the next joint coding or start a new joint coding. Based on the data transmission method provided by the embodiment of the present application, the first communication device can be made to stop the joint encoding data packet being sent according to the second indication information from the second communication device, or prepare for the next joint encoding, or start a new joint encoding. The joint encoding makes the first communication device more in line with the requirements of the second communication device when transmitting the joint encoded data packet, which saves communication resources and reduces energy consumption.

With reference to the above-mentioned first aspect, in a possible implementation manner, the method further includes: before the common sending end time of the N data packets, the first communication device sends the second communication device to the second communication device on the time-frequency resources corresponding to the N data packets. The communication device sends a first data packet; the first data packet is at least one data packet among the N data packets. Based on the data transmission method provided by the embodiments of the present application, since at least one data packet in the N data packets is independently transmitted one or more times without participating in joint coding, it is helpful for the second communication device to decode quickly and reduce complexity. degree decoding to get the original data packet.

With reference to the above-mentioned first aspect, in a possible implementation manner, the redundant version of the first data packet and the redundant version of the data packet participating in the joint encoding form complementary redundant versions. Based on the data transmission method provided by the embodiment of the present application, the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding form complementary redundant versions, which can add additional redundant information and reduce the code rate. This reduces the probability of errors and improves system performance.

With reference to the above-mentioned first aspect, in a possible implementation manner, the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship. Based on the data transmission method provided by the embodiments of the present application, the first data packet and the jointly coded data packet can use the same spatial reception filter, the same receive beam, or the same spatial parameters, and the second communication device can receive the data through the same space. The filtering or the same receive beam or the same spatial parameters receive the first data packet and the jointly encoded data packet, so that the operation of the second communication device can be simplified and repeated actions can be avoided.

With reference to the above-mentioned first aspect, in a possible implementation manner, the first communication device performing joint encoding on the N data packets includes: the first communication device obtains the first data packet corresponding to the first data packet of the redundant version of the first decoding capability. For the data packets of the redundant version of the second decoding capability, the first decoding capability is higher than the second decoding capability; the first communication device jointly encodes the data packets of the redundant version of the second decoding capability. Based on the data transmission method provided by the embodiment of the present application, since the first communication device can independently transmit the data packets with high redundancy version decoding capability, and jointly encode the data packets with low redundancy version decoding capability, the redundant version can be encoded. The first data packet with high version decoding capability helps to decode the jointly coded data packet, so the efficiency of successfully decoding the jointly coded data packet by the second communication device can be improved.

With reference to the above first aspect, in a possible implementation manner, the jointly coded data packet includes M jointly coded data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the jointly coded data packet is the first communication device It is determined according to the order of resource positions corresponding to the M jointly coded data packets on the first time-frequency resource. Based on the data transmission method provided by the embodiment of the present application, the second communication device may receive the jointly encoded data packet on the first time domain resource according to different spatial parameters of the jointly encoded data packet, thereby improving the spatial diversity gain of the jointly encoded data packet .

In combination with the above-mentioned first aspect, in a possible implementation manner, the joint coding method includes network coding and/or concatenated coding; when the sum of the lengths of all data packets in the N data packets is equal to or less than a preset threshold, The joint coding method is concatenated coding. Alternatively, when the length of each of the N data packets is greater than the preset threshold, the joint encoding method is network encoding. Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding. Based on the data transmission method provided by the embodiment of the present application, the first communication device can select different joint coding modes according to the size of the data packet, and can obtain the channel coding gain and/or the channel coding gain and/or the concatenated data packets with longer lengths. Network coding gain of network coding different packets.

With reference to the above-mentioned first aspect, in a possible implementation manner, the method further includes: the first communication device sends the joint encoding method to the second communication device, and the joint encoding method is used by the second communication device to compare the data from the first communication device to the second communication device. The joint encoded packets of the communication device are decoded. Based on the data transmission method provided by the embodiment of the present application, the first communication device may send the joint encoding method to the second communication device, so that the second communication device can decode the received joint encoding data packet according to the joint encoding method, The decoding resources are saved and the decoding efficiency is improved.

With reference to the above-mentioned first aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; wherein, the concatenation sequence of the joint encoding data packets is determined by the first communication device according to the data from the second communication device or the third communication device. determined by the third indication information of the device; or, the concatenation sequence of the jointly encoded data packets is randomly determined by the first communication device; or, the concatenated sequence of the jointly encoded data packets is determined by the first communication device according to a pre-configured sequence definite. Based on the data transmission method provided by the embodiments of the present application, various manners for determining the concatenation sequence of concatenated coding are provided, which are applicable to various scenarios.

With reference to the above first aspect, in a possible implementation manner, the method further includes: the first communication device sends the concatenation sequence of the jointly encoded data packets to the second communication device, and the concatenated sequence of the jointly encoded data packets is used for The second communication device decodes the jointly encoded data packet from the first communication device. Based on the data transmission method provided by the embodiment of the present application, the first communication device can send the concatenated sequence to the second communication device, so that the second communication device can decode the received jointly encoded data packets according to the concatenated sequence, saving the cost of The decoding resources are improved, and the decoding efficiency is improved.

With reference to the above-mentioned first aspect, in a possible implementation manner, the first communication device determining the first time-frequency resource for transmitting the jointly encoded data packet includes: the first communication device configures the time-frequency resource corresponding to the N data packets Determined to be the first time-frequency resource configuration. Based on the data transmission method provided by the embodiment of the present application, the first communication device can use the time-frequency resources corresponding to the N data packets to send the jointly coded data packet, which reduces the time and communication resources required for configuring the time-frequency resources for the jointly coded data packet. .

With reference to the above-mentioned first aspect, in a possible implementation manner, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources. Based on the data transmission method provided by the embodiment of the present application, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configured authorized resources, which can save the time for resource request and dynamic scheduling of the first communication device, thereby reducing the time delay.

In combination with the above-mentioned first aspect, in a possible implementation manner, when the joint coding method includes network coding, the number of joint coding data packets is greater than or equal to 2, and the first time-frequency resource includes multiple resource configurations, the The method further includes: the first communication device maps the jointly coded data packets to multiple resource configurations respectively; when the joint coding mode includes concatenated coding, and the number of the jointly coded data packets is greater than or equal to 1, the first time-frequency resource When multiple resource configurations are included, the method further includes: the first communication apparatus maps each jointly encoded data packet to the multiple resource configurations. Based on the data transmission method provided by the embodiment of the present application, the first communication device can select different ways of mapping the jointly coded data packets to resources according to the joint coding mode, which meets the requirements for transmitting different jointly coded data packets.

In a second aspect, a method for data transmission is provided, the method comprising: a second communication device determining a first time-frequency resource for transmitting a jointly coded data packet; wherein, the jointly coded data packet is obtained by the first communication device converting N The data packets used for repeated transmission are obtained by joint encoding, and N is a positive integer, and N≥2; wherein, each jointly encoded data packet is obtained by joint encoding of at least two data packets in the N data packets; The second communication device receives the jointly encoded data packet from the first communication device on the first time-frequency resource. Based on the data transmission method provided by the embodiment of the present application, the second communication device may receive a jointly encoded data packet obtained by jointly encoding the originally independently and repeatedly transmitted data packets, thereby increasing the diversity degree of each data packet, and may use the same The resources reach a higher diversity order, which improves the efficiency and reliability of resource use.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: the second communication device sends first parameter information to the first communication device, where the first parameter information is used by the first communication device to determine whether the N data The coding coefficients for the joint coding of the packets; wherein, the first parameter information includes at least one of the following parameters: the number of data packets participating in the joint coding, the number of repeated transmissions of each data packet, the number of the jointly coded data packets or the corresponding coding coefficients the size of the domain. Based on this solution, the first communication device can be made to determine the coding coefficients for jointly encoding the N data packets according to the parameter information sent by the second communication device, so the coding coefficients determined by the first communication device can be made more consistent with the second communication device need.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: the second communication device receives a coding coefficient for jointly coding the N data packets from the first communication device, and the coding coefficient is used for the second communication device. The communication device decodes the jointly encoded data packet from the first communication device. Based on the data transmission method provided by the embodiment of the present application, since the first communication device can send the jointly encoded coding coefficients to the second communication device, the second communication device can quickly and accurately encode the received joint encoding according to the coding coefficients. The data packet is decoded, which saves communication resources and improves the decoding efficiency.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: the second communication apparatus sends first indication information to the first communication apparatus, where the first indication information is used to indicate whether the first communication apparatus performs joint coding , and/or the first indication information is used to instruct the first communication apparatus to perform a coding manner for joint coding. Based on the data transmission method provided in this embodiment of the present application, the second communication device can be made to send first indication information to the first communication device according to its own situation, and the first indication information can indicate whether the first communication device performs joint coding and/or joint coding. The encoding method prevents the second communication device from being unable to decode the jointly encoded data packet sent by the first communication device, thereby avoiding waste of communication resources.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: the second communication apparatus sends second indication information to the first communication apparatus, where the second indication information is used to instruct the first communication apparatus to stop sending the joint coding The data packet, or the second indication information is used to indicate that the second communication apparatus has correctly received the joint coding data packet, or the second indication information is used to instruct the first communication apparatus to start new joint coding. Based on the data transmission method provided by the embodiment of the present application, the first communication device can be made to stop the joint encoding data packet being sent according to the second indication information from the second communication device, or start a new joint encoding, so that the first communication When the device transmits the jointly encoded data packet, it is more in line with the requirements of the second communication device, which saves communication resources and reduces energy consumption.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: before the common sending end time of the N data packets, the second communication device receives, on the time-frequency resources corresponding to the N data packets, the communication from the first communication device. A first data packet of a communication device or a third communication device; the first data packet is at least one data packet among the N data packets. Based on the data transmission method provided by the embodiments of the present application, since at least one data packet in the N data packets is independently transmitted one or more times without participating in joint coding, it is helpful for the second communication device to decode quickly and reduce complexity. degree decoding to get the original data packet.

With reference to the above second aspect, in a possible implementation manner, the redundant version of the first data packet and the redundant version of the data packet participating in the joint encoding form complementary redundant versions. Based on the data transmission method provided by the embodiment of the present application, the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding form complementary redundant versions, which can add additional redundant information and reduce the code rate. This reduces the probability of errors and improves system performance.

With reference to the above second aspect, in a possible implementation manner, the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship. Based on the data transmission method provided by the embodiments of the present application, the first data packet and the jointly coded data packet can use the same spatial reception filter, the same receive beam, or the same spatial parameters, and the second communication device can receive the data through the same space. The filtering or the same receive beam or the same spatial parameters receive the first data packet and the jointly encoded data packet, so that the operation of the second communication device can be simplified and repeated actions can be avoided.

In combination with the above second aspect, in a possible implementation manner, the jointly coded data packet includes M jointly coded data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the jointly coded data packet is the first communication device It is determined according to the order of resource positions corresponding to the M jointly coded data packets on the first time-frequency resource. Based on the data transmission method provided by the embodiment of the present application, the second communication device may receive the jointly coded data packet on the first time domain resource according to different spatial parameters of the jointly coded data packet, thereby improving the spatial diversity gain of the jointly coded data packet .

With reference to the above second aspect, in a possible implementation manner, the joint coding method includes network coding and/or concatenated coding; when the sum of the lengths of all data packets in the N data packets is less than a preset threshold, the joint coding The method is concatenated encoding. Alternatively, when the length of each of the N data packets is greater than the preset threshold, the joint encoding method is network encoding. Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is less than the preset threshold, the joint coding method includes network coding and concatenated coding. Based on the data transmission method provided by the embodiment of the present application, the first communication device can select different joint coding modes according to the size of the data packet, obtain the channel coding gain of the data packet with the length variable obtained after concatenation and/or Network coding gain for network coding of different packets.

With reference to the above-mentioned second aspect, in a possible implementation manner, the method further includes: a manner in which the second communication apparatus receives the joint coding from the first communication apparatus; and the joint coding manner is used for the second communication apparatus to The joint encoded packets of the communication device are decoded. Based on the data transmission method provided by the embodiment of the present application, the second communication device can decode the received jointly encoded data packet according to the joint encoding method from the first communication device, which saves decoding resources and improves decoding efficiency.

With reference to the above second aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; the method further includes: the second communication apparatus sends third indication information to the first communication apparatus, and the third indication information is used for The first communication device determines a concatenation order of the jointly encoded data packets. Based on the data transmission method provided by the embodiment of the present application, the first communication device can configure the concatenation sequence according to the indication information from the second communication device, so that the concatenation sequence of the jointly encoded data packets is more in line with the requirements of the second communication device.

With reference to the above second aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; the method further includes: the second communication device receives the concatenated sequence of the jointly encoded data packets from the first communication device, and jointly The concatenated sequence of encoded data packets is used by the second communication device to decode the jointly encoded data packets from the first communication device. Based on the data transmission method provided by the embodiment of the present application, the first communication device can send the concatenated sequence to the second communication device, so that the second communication device can decode the received jointly encoded data packets according to the concatenated sequence, saving the cost of The decoding resources are improved, and the decoding efficiency is improved.

With reference to the above second aspect, in a possible implementation manner, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources. Based on the data transmission method provided by the embodiment of the present application, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configured authorized resources, which can save the time for resource request and dynamic scheduling of the first communication device, thereby reducing the time delay.

In a third aspect, a first communication apparatus is provided for implementing the method described in the first aspect. The communication device includes corresponding modules, units, or means for implementing the method described in the first aspect. The modules, units, or means may be implemented by hardware, software, or by executing corresponding software in hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

With reference to the above third aspect, in a possible implementation manner, the first communication device includes: a processing module and a transceiver module; the processing module is configured to acquire N data packets for repeated transmission, where N is a positive integer, N≥2; the processing module is also used to jointly encode the N data packets to obtain at least one jointly encoded data packet; wherein, each joint encoded data packet is composed of at least two data packets in the N data packets obtained through joint coding; the processing module is further configured to determine the first time-frequency resource used for transmitting the joint-coded data packet; the transceiver module is configured to send the joint-coded data packet to the second communication device on the first time-frequency resource .

With reference to the above third aspect, in a possible implementation manner, the processing module is configured to jointly encode the N data packets including: jointly encoding the N data packets according to at least one of the following parameters: each of the N data packets The size of the data packets, the number of the data packets involved in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets, the encoding coefficients for the joint encoding of the N data packets, the fields corresponding to the encoding coefficients The size of the data packet, the configuration of the redundancy version of each data packet, the sending start time corresponding to each data packet in the N data packets, and the sending end time corresponding to each data packet in the N data packets.

With reference to the above third aspect, in a possible implementation manner, the coding coefficient is a coding coefficient preconfigured by the first communication device; or, the coding coefficient is determined by the processing module according to the set of coding coefficients; or, the coding coefficient is determined by The processing module is determined according to at least one of the following parameters: the number of the data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets or the size of the field corresponding to the encoding coefficient.

With reference to the above third aspect, in a possible implementation manner, the above at least one parameter is preconfigured by the first communication device; or, the transceiver module is further configured to receive data from the second communication device or the third communication device the first parameter information, where the first parameter information includes the above at least one parameter.

With reference to the above third aspect, in a possible implementation manner, the transceiver module is further configured to send coding coefficients to the second communication device, where the coding coefficients are used by the second communication device to jointly encode data from the first communication device packets are decoded.

With reference to the above third aspect, in a possible implementation manner, the transceiver module is further configured to receive first indication information from the second communication device or the third communication device, where the first indication information is used to indicate whether the processing module performs The joint coding, and/or the first indication information is used to indicate a coding manner for the processing module to perform the joint coding.

With reference to the above third aspect, in a possible implementation manner, the transceiver module is further configured to receive second indication information from the second communication device, where the second indication information is used to instruct the transceiver module to stop sending the joint encoded data packet, Either the second indication information is used to indicate that the second communication device has correctly received the joint coding data packet, or the second indication information is used to instruct the processing module to start a new joint coding; the transceiver module is also used to stop sending according to the second indication information joint encoding data packet; the processing module is further configured to prepare the next joint encoding or start a new joint encoding according to the second indication information.

With reference to the above third aspect, in a possible implementation manner, before the common sending end time of the N data packets, the transceiver module is further configured to send the second communication device to the second communication device on the time-frequency resources corresponding to the N data packets Send a first data packet; the first data packet is at least one data packet in the N data packets.

With reference to the above third aspect, in a possible implementation manner, the redundant version of the first data packet and the redundant version of the data packet participating in the joint encoding form complementary redundant versions.

With reference to the above third aspect, in a possible implementation manner, the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.

With reference to the above-mentioned third aspect, in a possible implementation manner, the processing module for jointly encoding N data packets includes: obtaining a second decoding corresponding to the first data packet of the redundant version of the first decoding capability For the data packets of the capability redundancy version, the first decoding capability is higher than the second decoding capability; the data packets of the redundant version of the second decoding capability are jointly encoded.

In combination with the above third aspect, in a possible implementation manner, the joint encoding data packet includes M joint encoding data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the joint encoding data packet is the processing module according to M The resource positions corresponding to the first time-frequency resources of the jointly coded data packets are determined in sequence.

With reference to the above third aspect, in a possible implementation manner, the joint coding method includes network coding and/or concatenated coding; when the sum of the lengths of all data packets in the N data packets is equal to or less than a preset threshold, The joint coding method is concatenated coding. Alternatively, when the length of each of the N data packets is greater than the preset threshold, the joint encoding method is network encoding. Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.

In combination with the above third aspect, in a possible implementation manner, the transceiver module is further configured to send the joint coding mode to the second communication device, and the joint coding mode is used for the second communication device to perform the joint encoding from the transceiver module. Encoded packets are decoded.

With reference to the above-mentioned third aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; wherein, the concatenation sequence of the joint encoding data packets is determined by the processing module according to the data from the second communication device or the third communication device. Determined by the third indication information; or, the concatenation sequence of the jointly encoded data packets is randomly determined by the processing module; or, the concatenated sequence of the jointly encoded data packets is determined by the processing module according to a preconfigured sequence.

In combination with the above third aspect, in a possible implementation manner, the transceiver module is further configured to send the concatenated sequence of the jointly encoded data packets to the second communication device, and the concatenated sequence of the jointly encoded data packets is used for the second communication device. The communication device decodes the jointly encoded data packets from the transceiver modules according to the cascade sequence.

With reference to the above-mentioned third aspect, in a possible implementation manner, the processing module is further configured to determine the first time-frequency resource used for transmitting the jointly encoded data packet, including: determining the time-frequency resource configuration corresponding to the N data packets as the first time-frequency resource configuration. A time-frequency resource configuration.

With reference to the above third aspect, in a possible implementation manner, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.

With reference to the above third aspect, in a possible implementation manner, when the joint coding method includes network coding, the number of joint coding data packets is greater than or equal to 2, and the first time-frequency resource includes multiple resource configurations, the The processing module is also used to map the joint encoding data packets to multiple resource configurations respectively; when the joint encoding method includes concatenated encoding, the number of joint encoding data packets is greater than or equal to 1, and the first time-frequency resource includes multiple When there are multiple resource configurations, the processing module is also used to map each joint encoding data packet to multiple resource configurations.

With reference to the foregoing third aspect, in a possible implementation manner, the foregoing processing module may be a processor, and the foregoing transceiver module may be a transceiver.

Wherein, for the technical effect brought by any one of the possible implementation manners of the foregoing third aspect, reference may be made to the technical effects brought about by different implementation manners in the foregoing first aspect, which will not be repeated here.

In a fourth aspect, a second communication apparatus is provided for implementing the method described in the second aspect. The communication device includes corresponding modules, units, or means (means) for implementing the method described in the second aspect. The modules, units, or means may be implemented by hardware, software, or by executing corresponding software in hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

With reference to the above-mentioned fourth aspect, in a possible implementation manner, the second communication device includes: a processing module and a transceiver module; the processing module is configured to determine the first time-frequency resource for transmitting the jointly encoded data packet; wherein , the jointly encoded data packet is obtained by jointly encoding N data packets for repeated transmission by the first communication device, N is a positive integer, N≥2; wherein, each joint encoded data packet is obtained by the N At least two data packets in the data packets are obtained by joint encoding; the transceiver module is configured to receive the jointly encoded data packets from the first communication device on the first time-frequency resource.

With reference to the fourth aspect, in a possible implementation manner, the transceiver module is further configured to send first parameter information to the first communication device, where the first parameter information is used by the first communication device to determine whether to perform a The coding coefficient of the joint coding; wherein, the first parameter information includes at least one of the following parameters: the number of data packets participating in the joint coding, the number of repeated transmissions of each data packet, the number of the jointly coded data packets or the field corresponding to the coding coefficient the size of.

With reference to the above fourth aspect, in a possible implementation manner, the transceiver module is further configured to receive an encoding coefficient for jointly encoding the N data packets from the first communication device, and the encoding coefficient is used by the processing module for the The jointly encoded data packet of the first communication device is decoded.

With reference to the above fourth aspect, in a possible implementation manner, the transceiver module is further configured to send first indication information to the first communication device, where the first indication information is used to indicate whether the first communication device performs joint coding, and /or the first indication information is used to instruct the first communication apparatus to perform a coding manner of joint coding.

With reference to the above fourth aspect, in a possible implementation manner, the transceiver module is further configured to send second indication information to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the joint encoded data packet , or the second indication information is used to indicate that the transceiver module has correctly received the joint coding data packet, or the second indication information is used to instruct the first communication apparatus to start a new joint coding.

With reference to the above fourth aspect, in a possible implementation manner, before the common sending end time of the N data packets, the transceiver module is further configured to receive the communication from the first communication on the time-frequency resources corresponding to the N data packets The first data packet of the device or the third communication device; the first data packet is at least one data packet among the N data packets.

With reference to the above fourth aspect, in a possible implementation manner, the redundant version of the first data packet and the redundant version of the data packet participating in the joint encoding form complementary redundant versions.

With reference to the above fourth aspect, in a possible implementation manner, the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.

With reference to the above fourth aspect, in a possible implementation manner, the jointly coded data packet includes M jointly coded data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the jointly coded data packet is the first communication device It is determined according to the order of resource positions corresponding to the M jointly coded data packets on the first time-frequency resource.

With reference to the above fourth aspect, in a possible implementation manner, the joint coding method includes network coding and/or concatenated coding; when the sum of the lengths of all data packets in the N data packets is equal to or less than a preset threshold, The joint encoding method is concatenated encoding; or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint encoding method is network encoding; or, when the length of all data packets in the N data packets is the sum of the lengths. When the sum is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode includes network coding and concatenated coding.

With reference to the above fourth aspect, in a possible implementation manner, the transceiver module is further configured to receive a joint encoding method from the first communication device, and the joint encoding method is used for the processing module to perform joint encoding from the first communication device. Encoded packets are decoded.

With reference to the above fourth aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; the transceiver module is further configured to send third indication information to the first communication device, and the third indication information is used for the first communication device. The communication device determines the concatenation order of the jointly encoded data packets.

With reference to the above fourth aspect, in a possible implementation manner, the joint encoding method includes concatenated encoding; the transceiver module is further configured to receive the concatenated sequence of the joint encoded data packets from the first communication device, and jointly encode the data The concatenated order of the packets is used by the processing module to decode the jointly encoded data packets from the first communication device.

With reference to the above fourth aspect, in a possible implementation manner, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.

With reference to the foregoing fourth aspect, in a possible implementation manner, the foregoing processing module may be a processor, and the foregoing transceiver module may be a transceiver.

Wherein, for the technical effect brought by any one of the possible implementation manners of the foregoing fourth aspect, reference may be made to the technical effects brought about by different implementation manners in the foregoing second aspect, which will not be repeated here.

In a fifth aspect, a communication device is provided, comprising: a processor; the processor is configured to be coupled to a memory, and after reading computer instructions stored in the memory, execute the method according to any one of the preceding aspects according to the instructions. Exemplarily, when the communication device is a first communication device, after reading the computer instruction stored in the memory, the first communication device executes the method described in the first aspect according to the instruction; or, the communication device is a second communication device. When a communication device is used, after the second communication device reads the computer instruction stored in the memory, the method as described in the second aspect above is executed according to the instruction.

With reference to the above fifth aspect, in a possible implementation manner, the communication apparatus further includes a memory; the memory is used for storing computer instructions.

With reference to the fifth aspect, in a possible implementation manner, the communication apparatus further includes a communication interface; the communication interface is used for the communication apparatus to communicate with other devices. Exemplarily, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, and the like.

With reference to the above fifth aspect, in a possible implementation manner, the communication device may be a chip or a chip system. Wherein, when the communication device is a chip system, the communication device may be constituted by a chip, and may also include a chip and other discrete devices.

With reference to the above fifth aspect, in a possible implementation manner, when the communication device is a chip or a chip system, the above-mentioned communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit on the chip or a chip system , pins or related circuits, etc. The processor described above may also be embodied as a processing circuit or a logic circuit.

In a sixth aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, when the computer-readable storage medium runs on a computer, the computer can perform the method described in any one of the above aspects.

In a seventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, enable the computer to perform the method of any of the preceding aspects.

Wherein, for the technical effect brought by any of the possible implementation manners of the fifth aspect to the seventh aspect, reference may be made to the technical effect brought by different implementation manners in any of the foregoing aspects, and details are not repeated here.

In an eighth aspect, a communication system is provided, which includes a first communication device that executes the method of the first aspect, and a second communication device that executes the method of the second aspect.

Description of drawings

Fig. 1 is the schematic diagram of repeated transmission data based on configuration authorization resource in the prior art;

2 is a schematic diagram of a redundancy version for a certain transport block;

FIG. 3 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an application scenario provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of another application scenario provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of another application scenario provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of still another application scenario provided by an embodiment of the present application;

FIG. 10 is an interactive schematic diagram of a data transmission method provided by an embodiment of the present application;

11 is a schematic diagram of a simultaneous sending time window provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of data packets p1 and p2 that can be independently transmitted according to an embodiment of the present application;

13 is a schematic diagram of a system of equations formed by a coding coefficient and a data packet of a data packet provided by an embodiment of the present application;

FIG. 14 is a schematic diagram of uniformly configuring joint coding data packets on corresponding resources according to an embodiment of the present application;

FIG. 15 is a schematic diagram of maximizing the configuration of jointly coded data packets in a common simultaneous transmission time window of N data packets according to an embodiment of the present application;

FIG. 16 is a schematic diagram of a joint coding data packet configuration provided in an embodiment of the present application in different simultaneous transmission time windows;

17 is a schematic diagram of the situation of repeated transmission of data packets in the 5G system standard and three cases of joint encoding and transmission of data packets based on the data transmission method provided by the embodiment of the present application;

FIG. 18 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

19 is a schematic flowchart when a joint coding method provided by an embodiment of the present application is network coding;

20 is a schematic flowchart when another joint encoding method provided by an embodiment of the present application is network encoding;

FIG. 21 is a schematic flowchart when another joint encoding method provided by an embodiment of the present application is network encoding;

22 is a schematic flowchart when a joint encoding method provided by an embodiment of the present application is concatenated encoding;

23 is a schematic flowchart when another joint encoding method provided by the embodiment of the present application is concatenated encoding;

24 is a schematic flowchart when another joint encoding method provided by the embodiment of the present application is concatenated encoding;

FIG. 25 is a schematic structural diagram of still another communication apparatus provided by an embodiment of the present application.

Detailed ways

In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction of the related technologies of the present application is first given as follows.

1. Network coding (NC)

The network coding in the embodiment of the present application is a linear coding operation, which can output multiple input data packets after linear combination, and the coefficients used in the linear combination are called network coding coefficients. The data packets after network coding can be further channel coded or the data packets after channel coding can be network coded.

2. Cascade coding

The concatenated coding in the embodiment of the present application is an operation of concatenating a plurality of data packets in a certain order, such as sequential order, so as to form a longer data packet. This operation of concatenating individual data packets is called concatenated encoding or concatenation. The concatenated encoded data packets can be further channel encoded.

3. Redundancy version (RV)

The RV is designed to implement incremental redundancy (IR) hybrid automatic repeat request (HARQ) transmission, and the transmitted data packets are channel-coded according to different RVs. Specifically, the redundant bits generated by the encoder are divided into several groups, each RV has an initial position (also known as a transmission start point), and different RVs are used for the first transmission and each HARQ retransmission to realize the redundant bits The gradual accumulation of IR HARQ operation is completed. There are four types of RVs, among which RV0 and RV3 support independent self-decoding, and RV2 and RV1 need to perform data decoding together with other RVs.

Figure 2 is a schematic diagram of the RV for a certain transmission block. The circle formed by the circle with radius r1 and the circle with radius r2 is filled with two parts, one part is the system bit, and the other part is the check bit, because one part is used for encoding. Information bits generate 2 check bits, so systematic bits: check bits = 1:2. When the RV is RV0 (assuming it is the first transmission), more systematic bits will be transmitted. When the receiving end fails to decode this time, it will notify the transmitting end to perform the first retransmission (assuming it is RV1), which will transmit more bits. multiple new redundant bits. The receiving end of the data that failed last time did not discard it, but further decoded it in combination with the retransmitted new redundant bits. If there was still an error, it continued to notify the transmitting end of the second retransmission (assuming RV2) to transmit more new data. Redundant bits; for the same reason, if there is still an error, continue to notify the sender of the third retransmission (assuming RV3), and transmit more new redundant bits. After the third retransmission, the RV sequence is {0,1 ,2,3}. The more the number of retransmissions, the lower the combined code rate at the receiving end, and the greater the possibility of correct decoding, until the receiving end decodes correctly and informs the sending end to send new data, where 2* indicates when RV0 is sent. , the offset of the transmitted systematic bits, that is, the systematic bits transmitted by RV0, starts from the 2* bit, not from the first bit. To sum up, the RV actually instructs the receiving end from which position of the ring to obtain the transmitted data.

4. Quasi co-location (QCL)

Two antenna ports are said to be quasi-co-located, or QCL, if the characteristics of the channel on which the symbols on one antenna port are transmitted can be inferred from the channel on which the symbols on the other antenna port are transmitted.

5. Cyclic Redundancy Check (CRC)

CRC is the most commonly used error checking code in the field of data communication. It is characterized in that the length of the information field and the check field can be arbitrarily selected. The sender performs polynomial calculation on the data to be sent, and appends the obtained result (i.e. CRC) to the back of the data, and the receiver also performs a similar algorithm to ensure the correctness and integrity of data transmission.

In the prior art, in order to improve the reliability of data transmission, the 5G system defines methods based on repeated transmission for configuration authorization and multiple transmission and reception points respectively. For the repeated transmission method based on configuration authorization, reference may be made to FIG. 1 and the corresponding introduction in the background art. The following briefly introduces the repeated transmission method based on multiple sending and receiving nodes in the prior art. Different sending nodes repeatedly send data at different times or frequencies. Two adjacent repeated transmissions can use different spatial transmission beams (beam) or the same spatial transmission beam, or use one for the first two repeated transmissions every four times. The same spatially filtered beam, the next 2 uses another spatially filtered beam. The method improves the reliability of data transmission by combining different spatial, time or frequency domains to transmit the same data.

However, in the method for repeated data transmission in the prior art, the data transmission efficiency is not high, and the reliability of data transmission needs to be further improved for business requirements. Therefore, how to improve the data transmission efficiency and data transmission reliability in the process of repeated data transmission is an urgent problem to be solved at present. Based on this, the present application proposes a data transmission method, device, and system to improve the data transmission efficiency and reliability in the process of repeated data transmission.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Wherein, in the description of this application, unless otherwise specified, "/" indicates that the objects associated before and after are an "or" relationship, for example, A/B can indicate A or B; in this application, "and/or" "It is only an association relationship that describes an associated object, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A exists , B can be singular or plural. Also, in the description of the present application, unless stated otherwise, "plurality" means two or more than two. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple . In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner to facilitate understanding.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) communication system, 5G system or new radio (NR) system, etc. The 5G mobile communication system involved in this application includes non-independent networking (non-independent networking). -standalone, NSA) 5G mobile communication system or independent networking (standalone, SA) 5G mobile communication system. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. In addition, the communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system , Internet of Things (IoT) communication systems or other communication systems.

In addition, the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

FIG. 3 is a schematic structural diagram of a communication system 10 to which the data transmission method provided by the embodiment of the present application is applied. As shown in FIG. 3 , the communication system 10 includes a first communication device 20 and a second communication device 30 . The first communication device 20 is configured to acquire N data packets for repeated transmission, where N is a positive integer, and N≧2. The first communication device 20 is further configured to perform joint encoding on the N data packets to obtain joint encoded data packets, wherein each joint encoded data packet is obtained by joint encoding of at least two data packets in the N data packets . The first communication device 20 is further configured to determine a first time-frequency resource for transmitting the jointly encoded data packet, and send the jointly encoded data packet to the second communication device 30 on the first time-frequency resource. The second communication device 30 is configured to determine a first time-frequency resource for transmitting the above-mentioned joint-coded data packet, and receive the jointly-coded data packet from the first communication device 20 on the first time-frequency resource. The specific implementation of the solution will be described in detail in the subsequent method embodiments, which will not be repeated here. Based on this solution, the first communication device 20 can jointly encode the data packets originally used for independent repeated transmission, and transmit the obtained jointly encoded data packets, which increases the diversity degree of each data packet, and can use the same resources to achieve better performance. High diversity order improves resource utilization efficiency and data transmission reliability.

It should be understood that FIG. 3 is only an exemplary schematic diagram showing the architecture of the communication system 10 to which the data transmission method provided by the embodiments of the present application is applied, and it is not limited that the communication system 10 only includes a first communication device 20 or a second communication device 20 device 30. In other words, the communication system 10 may include a plurality of first communication apparatuses 20 and a plurality of second communication apparatuses 30 , which are described here in a unified manner, and will not be repeated below.

Optionally, as shown in FIG. 3 , the communication system 10 may further include a third communication apparatus 40 . The third communication apparatus 40 may communicate directly with the first communication apparatus 20 or the second communication apparatus 30, or may communicate through the forwarding of other devices, which is not specifically limited in this embodiment of the present application.

Optionally, the first communication device, the second communication device, or the third communication device in this embodiment of the present application may be a network device, and the network device is a device that connects a terminal device to a wireless network, and may be a base station (base station). station), the evolved NodeB (eNodeB), the transmission reception point (TRP) in the fourth generation mobile communication technology (4th generation, 4G) system, the next generation base station (next) in the 5G mobile communication system generation NodeB, gNB), base stations in future mobile communication systems, or access nodes in wireless-fidelity (Wi-Fi) systems, including transmission nodes, transceiver nodes, relay equipment, or devices with base station functions Small station or micro station, etc.; it can also be a module or unit that completes some functions of the base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. In this application, unless otherwise specified, network devices refer to wireless access network devices.

Optionally, the first communication device, the second communication device, or the third communication device in this embodiment of the present application may be a terminal device, and the terminal device may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, or a relay station. , remote station, remote terminal, mobile equipment, user terminal (user terminal), user equipment (User Equipment, UE), terminal (terminal), wireless communication equipment, user agent, user equipment, cellular telephone, cordless telephone, session initiation protocol Session initiation protocol (SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, or other devices connected to wireless modems Processing equipment, in-vehicle equipment, laptop computers, wearable equipment, machine type communication terminals, terminal equipment in the future 5G network, terminal equipment in the future evolved PLMN, or terminal equipment in the future Internet of Vehicles, etc., embodiments of this application This is not limited.

As an example and not a limitation, in this embodiment of the present application, the terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving Wireless terminals, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

As an example and not a limitation, in the embodiments of this application, a wearable device may also be referred to as a wearable smart device, which is a general term for intelligently designing daily wearable devices and developing wearable devices using wearable technology, such as glasses, Gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an IOT system. IOT is an important part of the future development of information technology. Interconnection, the intelligent network of the interconnection of things and things. In the embodiments of the present application, the IOT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, a narrow band (narrow band, NB) technology.

Optionally, the related functions of the first communication apparatus, the second communication apparatus, or the third communication apparatus in this embodiment of the present application may be implemented by one device, or may be jointly implemented by multiple devices, or may be implemented by a device within one device. One or more functional modules are implemented, which is not specifically limited in this embodiment of the present application. It is to be understood that the above-mentioned functions can be either network elements in hardware devices, or software functions running on dedicated hardware, or a combination of hardware and software, or instantiated on a platform (eg, a cloud platform). Virtualization capabilities.

Optionally, as shown in FIG. 4 , it is a schematic structural diagram of a first communication device, a second communication device, or a third communication device according to an embodiment of the present application. The communication device 400 includes one or more processors 401, a communication line 402, and at least one communication interface (in FIG. 4, the communication interface 404 and one processor 401 are used as an example for illustration only), optional may also include memory 403 .

The processor 401 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.

Communication line 402 may include a path for connecting the various components.

The communication interface 404 can be a transceiver module for communicating with other devices or communication networks, such as Ethernet, RAN, wireless local area networks (wireless local area networks, WLAN) and the like. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 404 may also be a transceiver circuit located in the processor 401 to implement signal input and signal output of the processor.

The memory 403 may be a device having a storage function. For example, it may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of storage devices that can store information and instructions The dynamic storage device can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer any other medium taken, but not limited to this. The memory may exist independently and be connected to the processor through communication line 402 . The memory can also be integrated with the processor.

The memory 403 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 401 . The processor 401 is configured to execute the computer-executed instructions stored in the memory 403, thereby implementing the data transmission method provided in the embodiments of the present application.

Or, optionally, in this embodiment of the present application, the processor 401 may also perform processing-related functions in the data transmission methods provided in the following embodiments of the present application, and the communication interface 404 is responsible for communicating with other devices or communication networks. This is not specifically limited in the application examples.

Optionally, the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.

In a specific implementation, as an embodiment, the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4 .

In a specific implementation, as an embodiment, the communication apparatus 400 may include multiple processors, for example, the processor 401 and the processor 407 in FIG. 4 . Each of these processors can be a single-core processor or a multi-core processor. The processor here may include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU), or artificial intelligence Processors and other types of computing devices that run software, each computing device may include one or more cores for executing software instructions to perform operations or processing.

In a specific implementation, as an embodiment, the communication apparatus 400 may further include an output device 405 and an input device 406 . The output device 405 is in communication with the processor 401 and can display information in a variety of ways. For example, the output device 405 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait. Input device 406 is in communication with processor 401 and can receive user input in a variety of ways. For example, the input device 406 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.

The above-mentioned communication apparatus 400 may be a general-purpose device or a dedicated device. For example, the communication device 400 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, the above-mentioned terminal device, the above-mentioned network device, or a 4 devices of similar structure. This embodiment of the present application does not limit the type of the communication apparatus 400 .

Exemplarily, taking the first communication device, the second communication device, or the third communication device as a mobile phone as an example, FIG. 5 is one of the first communication device, the second communication device, or the third communication device provided by the embodiment of the application. specific structure.

Wherein, in some embodiments, the functions of the processor 401 in FIG. 4 may be implemented by the processor 110 in FIG. 5 .

In some embodiments, the functions of the communication interface 404 in FIG. 4 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, and the like in FIG. 5 . The mobile communication module 150 may provide a solution including wireless communication technologies such as LTE, NR or future mobile communication applied on the first communication device, the second communication device or the third communication device. The wireless communication module 160 may provide applications on the first communication device, the second communication device or the third communication device including WLAN (such as Wi-Fi network), Bluetooth (BT), global navigation satellite system (global navigation satellite system) system, GNSS), frequency modulation (frequency modulation, FM), near field communication (near field communication, NFC), infrared and other wireless communication technology solutions. In some embodiments, the antenna 1 of the first communication device, the second communication device or the third communication device is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, such that the first communication device, the second communication device or the The third communication apparatus may communicate with the network and other devices through wireless communication technology.

In some embodiments, the function of the memory 403 in FIG. 4 may be implemented by the internal memory 121 in FIG. 5 or an external memory connected by the external memory interface 120, or the like.

In some embodiments, the functions of output device 405 in FIG. 4 may be implemented by display screen 194 in FIG. 5 .

In some embodiments, the functionality of input device 406 in FIG. 4 may be implemented by a mouse, keyboard, touch screen device, or sensor module 180 in FIG. 5 .

In some embodiments, as shown in FIG. 5 , the first communication device, the second communication device or the third communication device may further include an audio module 170, a camera 193, a key 190, a SIM card interface 195, a USB interface 40, a charging management One or more of module 140 , power management module 141 and battery 142 .

It can be understood that the structure shown in FIG. 5 does not constitute a specific limitation on the first communication device, the second communication device or the third communication device. For example, in other embodiments of the present application, the first communication device, the second communication device, or the third communication device may include more or less components than those shown in the figure, or combine some components, or separate some components , or a different component arrangement. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The data transmission method provided by the embodiment of the present application can be applied to various scenarios. Exemplarily, FIG. 6 , FIG. 7 , FIG. 8 , and FIG. 9 are respectively schematic diagrams of scenarios in which the data transmission method provided by the embodiment of the present application can be applied. 6 is a schematic diagram of a scenario of point-to-point communication, the first communication device may be node 1, and the second communication device may be node 2. 7 is a schematic diagram of a relay communication scenario, the first communication device may be a relay device, the second communication device may be node 3, and the third communication device may be node 1 or node 2. FIG. 8 is a schematic diagram of cooperative communication of multiple transceiver nodes (transmission reception points, Multi-TRP), the first communication device may be node 1, node 2 or node 3, the second communication device may be node 4, and the third communication device may be Node 1, Node 2, or Node 3. FIG. 9 is a schematic diagram of cooperative communication between terminal devices. The first communication device may be terminal device 1 or terminal device 2 , and the second communication device may be terminal device 3 . How the data transmission method provided by the embodiment of the present application is applied to the above-mentioned scenario will be specifically described below with reference to the embodiment.

The data transmission method provided by the embodiment of the present application will be described below with reference to FIG. 1 to FIG. 9 .

It should be noted that the names of messages between network elements or the names of parameters in the messages in the following embodiments of the present application are just an example, and other names may also be used in specific implementations, which are not specified in the embodiments of the present application. limited.

As shown in FIG. 10, a data transmission method provided by an embodiment of the present application includes the following steps S1001-S1005:

S1001. The first communication apparatus acquires N data packets for repeated transmission, where N is a positive integer, and N≥2.

S1002. The first communication device performs joint encoding on the N data packets respectively to obtain at least one jointly encoded data packet; wherein each joint encoded data is obtained by joint encoding of at least two data packets in the N data packets.

S1003. The first communication apparatus determines a first time-frequency resource for transmitting the jointly encoded data packet.

S1004. The second communication apparatus determines a first time-frequency resource for transmitting the jointly encoded data packet.

S1005. The first communication apparatus sends a jointly encoded data packet to the second communication apparatus on the first time-frequency resource. Correspondingly, the second communication device receives the jointly encoded data packet from the first communication device on the first time-frequency resource.

The expansion of steps S1001-S1005 will be described below.

It should be noted that, in this embodiment of the present application, the first communication device sends a data packet, which may also be referred to as the first communication device transmits a data packet, which is described in a unified manner here, and will not be repeated below.

It should be noted that the joint coding method in this embodiment of the present application includes network coding and concatenated coding, and the related descriptions of network coding and concatenated coding can refer to the preamble part of the specific implementation, which will not be repeated here. In the embodiments of the present application, the jointly encoded data packets obtained through network coding may be referred to as network encoded data packets, and the jointly encoded data packets obtained through concatenated encoding may be referred to as concatenated encoded data packets. Repeat.

For the above step S1001, the data packet in the embodiment of the present application may refer to a transport block (transport block, TB) of the physical layer, or a code block (code block, CB). called packets. For example, in the embodiment of the present application, the first communication apparatus divides a data packet into multiple transmission blocks, and wants to send the multiple transmission blocks repeatedly, then the multiple transmission blocks are also N data packets in step S1101.

It should be noted that the data packets in the embodiments of the present application may refer to data packets used for repeated transmission, or data packets to be repeatedly sent, or data packets used for independent transmission in data packets for repeated transmission, or The data packets participating in the joint encoding in the data packets to be repeatedly sent may also be the joint encoding data packets obtained after the joint encoding operation, which are described here in a unified manner, and will not be repeated below.

It should be noted that, in the above, the data packets used for repeated transmission, or the data packets to be repeatedly sent, or the data packets participating in the joint coding, may also be called the original data packets, that is, the data packets have not been coded (joint coding or channel coding). encoded) packets. Here, a unified description is provided, and details are not repeated below.

In this embodiment of the present application, the N data packets refer to N types of data packets containing different data. For example, as shown in FIG. 1 , CG1 has data packet 1, CG2 has data packet 2, and data packet 1 and data packet 2 contain different data. At this time, it can be considered that the first communication device has acquired two data packets for repeated transmission. data pack.

Optionally, the first communication apparatus may generate N data packets for repeated transmission. For example, the first communication apparatus is a base station or a terminal device. In this case, the first communication apparatus may generate N data packets for repeated transmission. Alternatively, the first communication apparatus may also receive N data packets for repeated transmission from other communication apparatuses. For example, the first communication apparatus is a relay device and receives N data packets for repeated transmission from a network device.

In this embodiment of the present application, in order to repeatedly transmit N data packets, the first communication device needs to determine the transmission start time and the transmission end time corresponding to the N data packets respectively. Optionally, the first communication device may independently determine the sending start time and the sending end time corresponding to the N data packets, or the first communication device receives signaling from other communication devices to configure the corresponding transmission times of the N data packets. Start time and send end time.

It should be noted that, in the embodiment of the present application, the N data packets used for repeated transmission correspond to at least one simultaneous transmission time window, and the simultaneous transmission time window is the time at which at least 2 data packets in the N data packets are expected to be sent simultaneously. overlapping time periods. In other words, the embodiment of the present application does not consider the situation that the N data packets do not overlap with the expected simultaneous transmission time.

In the embodiment of the present application, after the first communication device determines the transmission start time and the transmission end time corresponding to the N data packets for repeated transmission, the first communication device may send the N data packets corresponding to the determined N data packets respectively. The start time and the sending end time determine at least one simultaneous sending time window corresponding to the N data packets, and the simultaneous sending time window is the time when at least two data packets in the N data packets are sent simultaneously. For example, FIG. 11 is a schematic diagram of a possible situation of simultaneous transmission time windows corresponding to 3 data packets when N is equal to 3. As shown in Figure 11, the simultaneous sending time window 1 is when the data packet 1 and the data packet 2 are sent at the same time, the corresponding simultaneous sending time window; the simultaneous sending time window 2 is when the data packet 1, the data packet 2 and the data packet 3 are sent at the same time , the corresponding simultaneous sending time window; the simultaneous sending time window 3 is the corresponding simultaneous sending time window when the data packet 2 and the data packet 3 are sent at the same time.

In this embodiment of the present application, in order to repeatedly send N data packets, the first communication device also needs to determine time-frequency resources for repeatedly sending N data packets. In a possible implementation manner, the first communication apparatus may receive resource configuration parameters from other communication apparatuses to configure time-frequency resources for repeatedly sending N data packets. In another possible implementation manner, the first communication apparatus may autonomously determine time-frequency resources for repeatedly sending N data packets. Optionally, when the first communication device autonomously determines the time-frequency resources for repeatedly sending N data packets, it can monitor the available resources and select time-frequency resources that are not used by other communication devices to send the data packets, such as listen before. talk mechanism. Optionally, the first communication device may also bind a resource set for repeatedly sending N data packets through pre-configuration, and the first communication device determines a resource set for repeatedly sending N data packets in the bound resource set. For time-frequency resources, for example, the first communication apparatus preconfigures 5 resource sets, and in these 5 resource sets, 3 time-frequency resources for sending N data packets are determined.

It should be noted that, in this embodiment of the present application, the first communication device acquires N data packets for repeated transmission and determines time-frequency resources for repeated transmission of the N data packets, in order to jointly encode the N data packets , obtain the joint encoded data packet and send it to the second communication device. Therefore, the first communication device acquires N data packets and determines time-frequency resources for repeatedly sending the N data packets, but does not necessarily need to directly send the N data packets to the second communication device. That is, the N data packets used for repeated transmission are data packets to be repeatedly sent, and do not necessarily need to be "sent" to the second communication device.

Optionally, considering the time delay constraint, in order to reduce the decoding time of the second communication device, the data transmission method provided by the embodiment of the present application further includes:

Before the common sending end time of the N data packets, the first communication device may send at least one data packet among the N data packets to the second communication device on the time-frequency resource corresponding to the N data packets. Correspondingly, the second communication device The communication device receives the first data packet from the first communication device on the time-frequency resources corresponding to the N data packets. In this embodiment of the present application, at least one data packet among the above N data packets may be referred to as the first data packet, that is, the first data packet refers to a data packet that is independently transmitted and does not participate in joint coding, or, in other words, the first data packet A packet is an independent "sent" data packet among the N data packets used for repeated transmission. Optionally, in order to further reduce the delay, the first data packet may be all data packets in the N data packets, that is, each data packet in the N data packets is independently transmitted one or more times. Exemplarily, FIG. 12 is a schematic diagram showing that the data packets p1 and p2 can be independently transmitted in this embodiment of the present application. As shown in Fig. 12, within the start time and end time of the repeated transmission of the data packet p1, the data packet p1 is independently transmitted three times. Within the start time and the end time of the repeated transmission of the data packet p2, the data packet p2 is independently transmitted 3 times. Based on the above solution, since at least one data packet in the N data packets is independently transmitted one or more times and does not participate in joint coding, it is helpful for the second communication device to decode quickly and with low complexity to obtain the original data Bag. In addition, based on the above solution, it is also possible to receive independent data packets and jointly coded data packets for joint decoding in the scenario of multiple sending nodes.

Further, the first communication device may also be within the transmission delay range of the N data packets, or the start time and end time of the repeated transmission corresponding to the N data packets, on the time-frequency resources corresponding to the N data packets. The first data packet is sent to the second communication device, and correspondingly, the second communication device receives the first data packet from the first communication device.

Optionally, the first data packet may be a system bit data packet. That is, the redundancy version of the first data packet may be RV0 or RV3. Since the first communication device can send independently transmitted systematic bit data packets to the second communication device, the second communication device can be independently decoded.

In this embodiment of the present application, the first data packet received by the second communication device may come from the first communication device. For example, in the point-to-point scenario shown in FIG. 6 , node 1 sends the joint encoded data packet and the first data packet to node 2 . Alternatively, the first data packet received by the second communication device may come from the third communication device. Exemplarily, in the scenario of multiple transceiver nodes shown in FIG. 8 , node 1 sends a joint coded data packet to node 4, and node 2 sends a jointly encoded data packet to node 2. Node 4 sends the first data packet.

For the above step S1002, in this embodiment of the present application, the first communication device performs joint encoding on the N data packets according to at least one of the following parameters:

The size of each data packet in the N data packets, the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of jointly encoded data packets, and the coding coefficients for the joint encoding of the N data packets , the size of the field corresponding to the coding coefficient, the redundant version configuration of each data packet in the N data packets, the redundant version configuration of the data packets participating in the joint coding, the redundant version configuration of the jointly encoded data packets, the N data packets The sending start time and sending end time corresponding to each data packet.

The above parameters are described in detail below.

Among the above parameters, the size of each data packet in the N data packets affects the selection of the joint coding mode, and how the specific effect is affected will be described in detail later.

Among the above parameters, the number of data packets participating in the joint encoding affects resource allocation, affects the number of joint encoding packets, and affects the selection of joint encoding coefficients. Generally speaking, the greater the number of data packets for joint coding, the greater the potential joint coding gain, for example, each data packet can use more resources, improve reliability, and improve diversity.

In this embodiment of the present application, the number of data packets participating in the joint encoding may be independently determined by the first communication device, for example, the first communication device independently determines the number of data packets participating in the joint encoding according to available resources and bandwidth transmission capabilities; or , the first communication device determines the number of data packets participating in the joint encoding according to the indication information from the second communication device or the third communication device. It should be noted that, in this embodiment of the present application, the manner in which the first communication apparatus acquires the data packets for repeated transmission and the manner in which the first communication apparatus acquires the number of data packets participating in joint coding may be the same or different. For example, the first communication device receives N data packets for repeated transmission from other communication devices, but can autonomously determine the number of data packets participating in joint coding. Alternatively, the first communication device generates N data packets for repeated transmission, but determines the number of data packets participating in joint coding according to the indication information from the second communication device or the third communication device, which is not the case in the embodiment of the present application. make restrictions.

In the above parameters, the number of times of repeated transmission of each data packet may refer to the number of times of repeated transmission of the original data packet, that is, the repeated transmission coefficients corresponding to the N data packets for repeated transmission, or the number of times of the above-mentioned first data packet. Coefficients are sent repeatedly. In addition, when the mode of joint coding is concatenated coding, it may also refer to the repeated transmission coefficients of the concatenated coded data packets. The number of repeated transmissions of each data packet affects the selection of coding coefficients for jointly encoding the data packets, the redundancy version configuration of the jointly encoded data packets, and the number of the jointly encoded data packets. How it will be affected will be explained in detail later.

Optionally, in this embodiment of the present application, the first communication device may preconfigure the number of times of repeated transmission of each data packet, or the first communication device may determine the number of times of repeated transmission of each data packet according to at least one of the following parameters: quality of service. Demand, channel quality or redundancy version configuration determines the retransmission factor. For example, the first communication device is preconfigured with a table of the correspondence between the service quality requirement, the channel quality and the number of repeated transmissions, and the first communication device determines the repeated transmission coefficient according to the table. Among them, the quality of service requirements can be, for example, delay, reliability and capacity or spectral efficiency. In addition, when the number of times of repeated transmission of each data packet refers to the repeated transmission coefficient of the first data packet, the first communication device may also determine the repetition of each data packet according to the size of the jointly encoded data packet or the number of the jointly encoded data packet The number of transmissions. For example, if the number of time-frequency resource blocks that can be used to transmit data packets is 5, and the number of jointly coded data packets is 3, then the number of time-frequency resource blocks that can be used to transmit the first data packet is 2, so data packet 1 is transmitted independently , repeat the transmission up to 2 times. Or, optionally, in this embodiment of the present application, the first communication apparatus determines the number of times of repeated sending of each data packet according to the indication information from the second communication apparatus or the third communication apparatus. In this embodiment of the present application, the number of times of repeated transmission of each data packet may be the same or different, which is not limited in this embodiment of the present application.

In the above parameters, different from the meaning of "number" in the N data packets, the "number" in the number of jointly encoded data packets refers to the number of jointly encoded data packets. For example, as shown in FIG. 12 , the number of jointly encoded data packets is two.

In this embodiment of the present application, the number of the jointly encoded data packets may be preconfigured by the first communication device, or the first communication device may determine the number of the jointly encoded data packets according to the indication information from the second communication device or the third communication device . Optionally, the number of joint encoding packets may also be equal to the number of data packets participating in joint encoding in the above parameters or the number of repeated transmissions of each data packet, which is not specifically limited in this embodiment of the present application.

Among the above parameters, when the joint encoding method requires coding coefficients, for example, when the joint encoding method is network coding, each joint encoding data packet has its own independent encoding coefficient, or the encoding coefficient of each joint encoding data packet is irreducible. , thereby ensuring that the equation system composed of the coding coefficients and the data packet can be solved, so that the second communication device can decode the jointly coded data packet. In this embodiment of the present application, the coding coefficients used by the first communication apparatus to jointly encode the data packets may be obtained in the following ways:

The coding coefficients are coding coefficients preconfigured by the first communication device.

Alternatively, the coding coefficients are determined by the first communication device from the set of coding coefficients. For example, the first communication device selects the coding coefficients in the set of coding coefficients. Optionally, the set of coding coefficients may be preconfigured by the first communication apparatus, or sent to the first communication apparatus by the second communication apparatus or the third communication apparatus.

Alternatively, the encoding coefficient is determined by the first communication device according to at least one of the following parameters: the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet in the N data packets, the number of jointly encoded data packets, or The size of the field corresponding to the coded coefficients. The above at least one parameter may be preconfigured by the first communication device, or the second communication device or the third communication device sends first parameter information to the first communication device, where the first parameter information includes the above at least one parameter, which corresponds to Correspondingly, the first communication device receives the first parameter information from the second communication device or the third communication device, and determines the corresponding parameter according to the first parameter information. Based on this solution, the first communication device can be made to determine the coding coefficients according to the parameter information sent by the second communication device, so that the coding coefficients of the jointly encoded data packets are more in line with the requirements of the second communication device.

The field corresponding to the coding coefficient is used by the first communication device to select the coding coefficient in the field. For example, the field corresponding to the coding coefficient may be a Galois 2 field or a Galois field greater than 2. To give a specific example, The field is 2 ⁿ , where n is a natural number.

The following describes how to determine the coding coefficient with reference to a specific example. The first communication device determines the coding coefficient according to the number of data packets and the number of jointly encoded data packets. For example, there are 2 data packets involved in joint coding: data packet x1 and data packet y1. To obtain 2 jointly coded data packets, the corresponding coding coefficients can be a11, a12, a21, a22. In this case, 2 or Coding coefficients in the quaternary field, such as Galois 2 field or Galois 4 field. Then, for the two jointly encoded data packets obtained by the joint encoding, the corresponding equations formed by the encoding coefficients and the data packets may be a11*x1+a12*y1 and a21*x1+a22*y1. For another example, as shown in Figure 13, there are 2 data packets involved in joint coding: data packet x1 and data packet x2. To obtain 4 jointly coded data packets, the corresponding coding coefficients can be a11, a12, a13, a14, a21, a22, a23, a24, then the 4 jointly encoded data packets obtained by the joint encoding, the corresponding equations of the encoding coefficients and the data packets can be a11*x1+a21*x2, a12*x1+a22*x2, a13*x1+a23*x2 and a14*1x1+a24*x2. At this time, coding coefficients in the quaternary field or a larger field, such as the Galois 4 field, can be used.

The foregoing embodiments of the present application provide various methods for determining coding coefficients, which are applicable to various scenarios.

Optionally, the data transmission method provided in this embodiment of the present application further includes: the first communication device sends the encoding coefficient to the second communication device, and correspondingly, the second communication device receives the encoding coefficient from the first communication device and, according to the The received encoded coefficients decode the jointly encoded data packet from the first communication device. In a possible implementation manner, when the coding coefficient is determined by the first communication device and the second communication device does not know the coding coefficient, for example, the first communication device selects the coding coefficient from a preconfigured set of coding coefficients, the first communication device The determined coding coefficients are sent to the second communication device, and the second communication device performs decoding according to the received coding coefficients. Based on this solution, since the first communication device can send the jointly coded coding coefficients to the second communication device, the second communication device can quickly and accurately decode the received jointly coded data packets according to the coding coefficients, saving energy The communication resources are saved, and the decoding efficiency is improved.

Among the above parameters, the redundant version configuration of each data packet affects the joint decoding performance of the above-mentioned first data packet and the jointly encoded data packet.

In this embodiment of the present application, the redundant version configuration of each data packet may include a redundant version configuration of a data packet used for repeated transmission, a redundant version configuration of a data packet participating in joint encoding, or a redundant version of a joint encoded data packet Configuration, the following describes how to configure the redundant version of the above data packets.

It should be noted that, in this embodiment of the present application, since the data packets used for repeated transmission are original data, and the data packets participating in the joint encoding are at least two data packets in the data packets used for repeated transmission, the jointly encoded data packets It is obtained by performing joint coding on the data packets participating in the joint coding. Therefore, when the first communication device performs channel coding on the data packets used for repeated transmission, the data packets participating in the joint coding, or the jointly coded data packets, the above-mentioned data packets can be encoded. Configure either redundant version.

In this embodiment of the present application, the same redundancy version may be used when the same data packet is repeatedly sent, for example, the data packet is retransmitted 4 times, and the redundancy version is RV0; or, the same data packet may be sent repeatedly with different redundancy versions. The redundant version, for example, the data packet is retransmitted 4 times, and the redundant versions are RV0, RV2, RV3, RV1; or, the same data packet can be sent repeatedly with the same partial redundancy version and different partial redundancy versions, such as data packets. Retransmission is performed 4 times, and the redundancy versions are RV0, RV0, RV3, and RV3, respectively, which is not limited in this embodiment of the present application.

In this embodiment of the present application, the redundancy version of the jointly encoded data packet may be pre-configured or determined according to other parameters. For example, the first communication device may determine the joint redundancy version according to the configuration of the redundancy version of the data packet for repeated transmission. The redundant version configuration of the encoded data packet is not specifically limited in this embodiment of the present application.

In this embodiment of the present application, the redundancy version of the data packet participating in the joint coding may be pre-configured or determined according to other parameters, for example, the first communication device may be configured according to the redundancy version of the data packet used for repeated transmission The redundant version configuration of the data packets participating in the joint encoding is determined, which is not specifically limited in this embodiment of the present application.

In this embodiment of the present application, the redundancy version of the data packet used for repeated transmission may be pre-configured, or may be determined according to other parameters, for example, the first communication device may be configured according to the redundancy version of the data packet participating in the joint coding The redundant version configuration of the data packet to be used and repeatedly sent is determined, which is not specifically limited in this embodiment of the present application.

In the embodiments of the present application, according to different joint coding manners, the manner in which the first communication apparatus configures the redundancy version of the data packet is also different, which will be described in detail below.

In the embodiment of the present application, when the method of joint coding is network coding, and the data packets participating in network coding are data packets after channel coding, a redundant version needs to be configured for the data packets participating in joint coding.

Based on this, when the method of joint coding includes network coding and the data packets participating in the network coding are data packets after channel coding, in a possible implementation, the first communication device may perform the network coding according to the redundancy of the data packets used for repeated transmission. The redundant version configuration determines the redundant version configuration of the data packets participating in the joint encoding. Optionally, the first communication device configures the redundancy version of the data packet participating in the joint encoding to be the same redundancy version as the original data packet corresponding to the data packet to be repeatedly sent, or the redundancy version during independent transmission. For example, when the data packet 1 is independently transmitted, the redundancy version is RV0, and the first communication apparatus also configures the redundancy version of the data packet 1 participating in the joint encoding as RV0. Alternatively, the redundancy version corresponding to the first data packet and the redundancy version of the data packet participating in the joint coding form a complementary redundancy version. In the embodiment of the present application, for the repeated transmission of the same data packet, the complementary redundancy versions means that the redundancy versions of the data packet during transmission are RV0, RV2, RV3, and RV1, respectively. The redundant version corresponding to the first data packet and the redundant version of the data packet participating in the joint coding form a complementary redundant version, which refers to the redundant version corresponding to the first data packet, and the original redundant version corresponding to the first data packet. Redundancy versions differ when packets participate in joint encoding. For example, when data packet 1 is transmitted independently, the redundancy version is RV0, and when data packet 1 participates in joint coding, the redundancy version is RV2. Because RV0 is different from RV2, the system bit information and redundant bit information carried are also different, so they can complement each other. System bit information and redundant bit information of packet 1. Based on this scheme, the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding form complementary redundant versions, which can add additional redundant information, reduce the code rate, thereby reduce the probability of errors and improve the system. performance.

Therefore, in this implementation manner, the first communication apparatus may determine the redundancy version configuration of the data packets participating in the joint encoding according to the redundancy version configuration of each data packet based on the rules such as complementary redundancy versions introduced above.

When the method of joint coding includes network coding and the data packets participating in the network coding are data packets after channel coding, in another possible implementation, the first communication device may, according to the preconfigured redundancy of the data packets participating in the joint coding, The redundant version configuration is determined, and the redundant version configuration for the repeatedly sent data packet or the first data packet is determined. For the specific determination method, refer to the above-mentioned how to determine the redundancy version configuration of the data packets participating in the joint coding according to the redundancy version configuration of the data packets used for repeated transmission.

When the joint coding method includes network coding and the data packets participating in the network coding are data packets after channel coding, in another possible implementation, the first communication device may preconfigure the data packets for repeated transmission, the first communication device A data packet and redundant version configuration of the data packets participating in the joint encoding.

Optionally, because the independent decoding capabilities of each redundant version are different, when the time-frequency resources are limited, it is preferable to jointly encode the channel-coded data of the redundant versions that cannot be independently decoded or whose independent decoding capabilities are lower, thereby Taking into account the amount of available resources, decoding capability and the number of jointly encoded data packets to ensure decoding performance. In this embodiment of the present application, when the joint encoding method includes network coding, in order to successfully decode the joint encoding data packet by the second communication device receiving the joint encoding data packet, the redundant version data packet with low independent decoding capability may be preferentially decoded. Joint coding is performed, and the data packets with strong independent decoding ability are transmitted independently. After the second communication device receives the data packets, the data packets with high redundancy version independent decoding ability are first de-rate matched and decoded, and then matched with the data packets. The jointly encoded data packets with low redundancy version independent decoding capability are combined to help the joint encoded data packets with low redundant version independent decoding capability to be decoded. In order to realize the above solution, in a possible implementation manner, the first communication device performs joint encoding on N data packets to obtain a jointly encoded data packet, including: the first communication device obtains a first decoding capability redundancy version of the first communication device. For the data packet of the redundant version of the second decoding capability corresponding to the data packet, the first decoding capability is higher than the second decoding capability; the first communication device jointly encodes the data packet of the redundant version of the second decoding capability. Based on this solution, since the first communication device can independently transmit data packets with high redundancy version decoding ability, and jointly encode data packets with low redundancy version decoding ability, the data packets with high redundancy version decoding ability can be encoded. The packet assists in decoding the jointly coded data packet, so the efficiency of successfully decoding the jointly coded data packet by the second communication device can be improved.

To explain with an example, the first coding capability redundancy version is RV0, the second coding capability redundancy version is RV2, and the coding capability of RV0 is higher than that of RV2. Therefore, the first communication device independently transmits the data packet 1 whose redundancy version is RV0, and the first communication device jointly encodes the data packet 1 and the data packet 2 of RV2 to obtain a jointly encoded data packet.

In the embodiment of the present application, when the joint coding method is network coding, and the data packets participating in the network coding are original data packets, the network coding data packets obtained by network coding in this method need to be channel-coded, and the network coding data packets need to be configured Redundant version. Based on this, in this embodiment of the present application, when the method of joint coding is network coding, and the data packets participating in network coding are original data packets, the redundant version of the jointly coded data packets may be preconfigured, or may be based on other parameters are determined. Meanwhile, the redundancy version of the data packet used for repeated transmission may be pre-configured, or may be determined according to other parameters. The specific determination method may refer to the prior art, which will not be repeated here.

On the other hand, in the embodiment of the present application, when the joint coding method includes concatenated coding, since the data packets participating in the concatenated coding are original data packets and do not undergo channel coding, there is no need to configure a redundant version. The concatenated encoded data packets obtained by the concatenated encoding need to be channel encoded, so the concatenated encoded data packets need to be configured with redundant versions.

Based on this, when the manner of joint coding includes concatenated coding, in this embodiment of the present application, the redundancy version of the jointly coded data packet may be pre-configured, or may be determined according to other parameters. Meanwhile, the redundancy version of the data packet used for repeated transmission may be pre-configured, or may be determined according to other parameters. The specific determination method may refer to the prior art, which will not be repeated here.

Among the above parameters, the sending start time and sending end time corresponding to each data packet in the N data packets are used by the first communication device to determine at least one simultaneous sending time window corresponding to the N data packets. Introduction, I will not go into details here. Because the jointly encoded data packets are transmitted within the simultaneous transmission time window corresponding to the data packets participating in the joint encoding, the longer the simultaneous transmission time window, the more time-frequency resources available for transmitting the jointly encoded data packets, and the first communication device can Perform joint encoding to get more joint encoded packets. Therefore, the corresponding sending start time and end time of each data packet affect the number of jointly encoded data packets, thereby affecting the diversity degree. The specific effect is described below.

Based on the data transmission method provided by the embodiment of the present application, when the first communication device performs joint encoding on the N data packets, the size of each data packet in the N data packets and the number of data packets participating in the joint encoding are considered , the number of repeated transmissions of each data packet, the number of jointly coded data packets, the coding coefficients for jointly coding N data packets, the size of the field corresponding to the coding coefficients, the redundancy version configuration of each data packet, N Factors such as the sending start time and sending end time corresponding to each data packet in the data packets can make the first communication device more comprehensive when performing joint coding, and increase the diversity degree and coding gain of the jointly coded data packets.

The manner in which the first communication apparatus determines the joint coding will be specifically introduced below.

When the sum of the lengths of all the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode is concatenated coding.

Alternatively, when the length of each of the N data packets is greater than the preset threshold, the joint encoding method is network encoding.

Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.

In this embodiment of the present application, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the lengths of the data packets in the N data packets are equal to or less than the preset threshold, the following situations can be considered : The sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of each data packet is less than the preset threshold. Or, among the N data packets, the length of some data packets is greater than the preset threshold, and the length of another part of the data packets is less than the preset threshold, or, the lengths of all the data packets in the N data packets are equal to the preset threshold, or, N The length of some of the data packets in the data packets is equal to the preset threshold. The above situations are described in detail below.

When the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of each data packet is less than the preset threshold, the first communication device concatenates all the data packets to obtain concatenated encoded data Then, the concatenated encoded data packets are evenly divided, and the uniformly divided data packets are network-coded and then channel-coded, or the uniformly divided data packets are firstly channel-coded and then network-coded.

It should be noted that the uniform division in the embodiment of the present application may be to divide the concatenated encoded data packets evenly according to their lengths, or to divide them according to a preset threshold. equal, add 0 to the concatenated bit or symbol of the concatenated encoded data packet or the data packet whose length is not equal to the preset threshold after division to realize even division according to the preset threshold.

In this embodiment of the present application, when the length of some of the N data packets is greater than the preset threshold, and the length of some of the data packets is less than the preset threshold, the first communication device may perform joint coding in the following ways:

(1), the first communication device obtains concatenated encoded data packets after performing concatenated encoding on all the data packets, evenly divides the concatenated encoded data packets, performs network coding on the evenly divided data packets and then performs channel coding, or The evenly divided data packets are channel-coded first, and then network-coded.

(2) The first communication device groups all the data packets according to the length, divides the data packets whose length is less than the preset threshold into the first group, and divides the data whose length is greater than the preset threshold into the second group. If the length of the concatenated encoded data packet is greater than the preset threshold, the concatenated encoded data packet is evenly divided, and then the divided data packets are network encoded. Then perform channel coding, or perform channel coding on the evenly divided data packets, and then perform network coding. At the same time, the data packets in the second group are network-coded and then channel-coded, or channel-coded and then network-coded.

(3), the first communication device performs concatenated encoding on the data packets whose length is less than the preset threshold in all the data packets, obtains the concatenated encoded data packets, and then performs the concatenated encoded data packets with the data packets whose length is greater than the preset threshold. The network coding is followed by channel coding, or the evenly divided data packets and the data packets whose length is greater than the preset threshold are respectively channel-coded and then network-coded.

In this embodiment of the present application, when the length of some of the N data packets is equal to the preset threshold, the first communication device may perform joint encoding in the following ways:

(2) The first communication device groups all the data packets according to the length, divides the data packets whose length is less than the preset threshold into the first group, and divides the data whose length is greater than the preset threshold into the second group, and the length is equal to the preset threshold The data packets are divided into the third group, and the data packets in the first group are concatenated and encoded to obtain concatenated encoded data packets. If the length of the concatenated encoded data packets is greater than the preset threshold, the concatenated encoded data packets are uniformly Split, and then perform network coding and then channel coding on the data packets obtained after the split, or perform channel coding on the evenly divided data packets first, and then perform network coding. At the same time, perform network coding and then channel coding on the data packets in the second group, or perform channel coding first and then perform network coding, and perform network coding on the data packets in the third group and then perform channel coding, or perform channel coding first. , and then do network coding.

(3), the first communication device performs concatenated encoding on the data packets whose length is less than the preset threshold and equal to the preset threshold in all the data packets to obtain the concatenated encoded data packets, and then the concatenated encoded data packets with the length greater than the preset The data packets with the threshold value are network-coded and then channel-coded, or the evenly divided data packets are channel-coded and then network-coded.

It should be noted that the embodiments of the present application are described by taking the example of supporting concatenated encoding of data packets of unequal lengths and network encoding of data packets of equal lengths. The network coding is then performed, which will be uniformly described here, and will not be repeated below.

Based on the data transmission method provided by the embodiment of the present application, the first communication device can select different joint coding modes according to the size of the data packet, and can obtain the channel coding gain and/or the channel coding gain and/or the concatenated data packets with longer lengths. Network coding gain of network coding different packets.

Optionally, in this embodiment of the present application, the first communication device may send the joint encoding mode to the second communication device, and correspondingly, the second communication device receives the joint encoding mode from the first communication device, and sends the joint encoding mode according to the receiving method. decoding the jointly encoded data packet from the first communication device. Further, when sending the encoding mode, the first communication device may also send the size and the number of data packets participating in the joint encoding in the corresponding encoding mode. Since the first communication device can send the joint encoding method to the second communication device, the second communication device can be made to decode the received joint encoding data packet according to the joint encoding method, which saves decoding resources and improves the decoding efficiency. code efficiency.

Optionally, in the embodiment of the present application, when the joint coding method includes network coding, how to determine the coding coefficient of the network coding by the first communication apparatus can refer to the above description of determining the coding coefficient, and details are not repeated here.

Optionally, in this embodiment of the present application, when the joint encoding method includes concatenated encoding, the concatenation sequence when the first communication device performs concatenated encoding on the data packets, that is, the concatenation sequence of the data packets participating in the concatenated encoding. , which can be determined in the following ways:

Mode 1: The second communication device or the third communication device sends the third indication information to the first communication device. Correspondingly, the first communication device receives the third indication information from the second communication device or the third communication device, and according to the The third indication information determines the concatenation order of the jointly encoded data packets.

Manner 2: The concatenation sequence of the jointly encoded data packets is randomly determined by the first communication device.

Manner 3: The concatenation sequence of the jointly encoded data packets is determined by the first communication device according to the preconfigured sequence. Exemplarily, the first communication apparatus determines the concatenation sequence according to the sequence of the sending time of the data packets to be concatenated encoded, or the sequence of frequency domain resources of the data packets to be concatenated encoded. Among them, the latter two solutions are relatively simple, and there is no additional communication overhead with other communication devices.

The embodiments of the present application provide various manners for determining the concatenation sequence of concatenated coding, which are applicable to various scenarios.

Optionally, the data transmission method provided in the embodiment of the present application further includes: the first communication device sends the concatenated sequence of the jointly encoded data packets to the second communication device, and correspondingly, the second communication device receives data from the first communication device. the concatenated sequence of the jointly encoded data packets, and decode the jointly encoded data packets from the first communication device according to the received concatenated sequence. Since the first communication device can send the concatenated sequence to the second communication device, the second communication device can be made to decode the received jointly encoded data packets according to the concatenated sequence, which saves decoding resources and improves decoding efficiency. . In a possible implementation manner, when the first communication device determines the cascading sequence and the second communication device does not know the cascading sequence, for example, when the first communication device randomly determines the cascading sequence, the first communication device will determine the cascading sequence. Sequentially sent to the second communication device.

Optionally, the data transmission method provided in the embodiment of the present application further includes:

The second communication device or the third communication device sends the first indication information to the first communication device. Correspondingly, the first communication device receives the first indication information from the second communication device or the third communication device, and the first indication information uses It is used to indicate whether the first communication device performs joint encoding, and/or the first indication information is used to indicate an encoding method for the first communication device to perform joint encoding. In a possible implementation manner, the first communication apparatus receives the first indication information before step S1002.

Exemplarily, when the first indication information is used to instruct the first communication device to perform a joint encoding encoding method, the first communication device performs joint encoding on the data packet according to the encoding method indicated by the first indication information to obtain a joint encoded data packet. .

Alternatively, when the first indication information is used to instruct the first communication apparatus to perform joint encoding, the first communication apparatus performs joint encoding on the data packet according to the first indication information to obtain a joint encoded data packet. Alternatively, when the first indication information is used to instruct the first communication apparatus not to perform joint coding, the first communication apparatus does not perform joint coding.

Based on the above solution, the first communication device can perform joint encoding according to the received first indication information, thereby preventing the second communication device from being unable to decode the jointly encoded data packet sent by the first communication device, thereby avoiding waste of communication resources.

For step S1003, in this embodiment of the present application, the first time-frequency resource that is determined by the first communication device for transmitting the jointly encoded data packet may include the following two situations:

1. The first communication device determines the time-frequency resource configuration corresponding to the N data packets as the first time-frequency resource configuration, which may also be referred to as the first time-frequency resource configuration reusing the time-frequency resource configuration of the N data packets. At this time, the jointly encoded data packets are mapped and transmitted on the time-frequency resources corresponding to the N data packets. For example, data packet 1 and data packet 2 for repeated transmission correspond to time-frequency resource 1 and time-frequency resource 2, and the jointly encoded data packet obtained by jointly encoding data packet 1 and data packet 2 is also in time-frequency resource 1 and time-frequency resource. 2 on the transmission. Based on the data transmission method provided by the embodiment of the present application, the first communication device can use the time-frequency resources corresponding to the N data packets to send the jointly coded data packet, which reduces the time and communication resources required for configuring the time-frequency resources for the jointly coded data packet. .

2. The first communication device determines the time-frequency resource configuration independent of the time-frequency resources corresponding to the N data packets as the first time-frequency resource configuration, and the joint coding data packet is independent of the time-frequency resources corresponding to the N data packets. Mapping and transmission are performed on the time-frequency resource configuration. For example, data packet 1 and data packet 2 for repeated transmission correspond to time-frequency resource 1 and time-frequency resource 2, and the jointly encoded data packet obtained by the joint encoding of data packet 1 and data packet 2 can be in time-frequency resource 3 and time-frequency resource. 4, or it may only be transmitted on the time-frequency resource 3, which is not limited in this embodiment of the present application. In this case, the first communication apparatus may configure the time-frequency resources corresponding to the N data packets independently of the first time-frequency resources, or configure them simultaneously. This solution can configure the first time-frequency resource more flexibly.

Optionally, in this embodiment of the present application, considering the time delay constraint, the time domain resources of the first time-frequency resource may be within the simultaneous transmission time window corresponding to the N data packets. Or, within the time delay range, part of the time-domain resources in the time-domain resources of the first time-frequency resource are within the simultaneous sending time window corresponding to the N data packets, and part of the time-frequency resources are sent at the same time corresponding to the N data packets after the time window.

Optionally, when there are M jointly encoded data packets, M is a positive integer, and M≧2, the first communication device also needs to configure spatial parameters of the jointly encoded data packets. In this embodiment of the present application, the spatial parameter refers to a spatial reception filtering parameter, which corresponds to the direction of the receiving beam. Exemplarily, the first communication apparatus may determine the spatial parameter of the jointly coded data packet according to the sequence of resource positions corresponding to the M jointly coded data packets on the first time-frequency resource. Specifically, the first communication device may, according to the time domain position sequence corresponding to the M jointly coded data packets on the first time-frequency resource, or according to the frequency domain position corresponding to the M jointly coded data packets on the first time-frequency resource order, or, according to the time domain and frequency domain position order corresponding to the M jointly coded data packets on the first time domain resource (for example, according to the time domain position order first and then according to the frequency domain position order, or first according to the frequency domain position order Then, according to the time domain position order), determine the spatial parameter order of the jointly encoded data packet. For example, when the first communication device determines the sequence of spatial parameters of the jointly coded data packets according to the time domain position sequence corresponding to the M jointly coded data packets on the first time-frequency resource, if the jointly coded data packet 1 is sent at time 1, the corresponding spatial Parameter 1, the joint encoding data packet 2 is sent at time 2, corresponding to the spatial parameter 2, and time 1 is earlier than time 2, then the spatial parameter order of the joint encoding data packet 1 is before the spatial parameter order of the joint encoding data packet 2. Based on this solution, the second communication device can receive the jointly coded data packet on the first time domain resource according to different spatial parameters of the jointly coded data packet, thereby improving the spatial diversity gain of the jointly coded data packet.

Optionally, the reference signal of the jointly coded data packet may have a QCL relationship with the reference signal of the first data packet. For details, please refer to the introduction to the QCL above. In this embodiment of the present application, the reference signal has a QCL relationship, that is, the reference signal uses the same spatial parameters or spatial reception filtering or the same receive beam. Based on the data transmission method provided by the embodiments of the present application, the first data packet and the jointly coded data packet can use the same spatial reception filter, the same receive beam, or the same spatial parameters, and the second communication device can receive the data through the same space. Filtering or the same receive beam or the same spatial parameters receives the first data packet and the jointly encoded data packet, thereby simplifying the operation of the second communication device and avoiding repetitive behaviors.

Optionally, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets may be configuration authorized resources, and details can be found in the introduction in the background art. Based on the data transmission method provided by the embodiment of the present application, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configured authorized resources, which can save the time for resource request and dynamic scheduling of the first communication device, thereby reducing the time delay.

Optionally, in this embodiment of the present application, when the first communication device sends the first data packet to the second communication device, the time when the joint encoding data packet starts to transmit is equal to or later than the time at which the corresponding data packet participating in the joint encoding is transmitted. The corresponding start time of the first data packet transmission. For example, as shown in Figure 12, the start transmission time of the jointly encoded data packet obtained by the joint encoding of the data packet p1 and the data packet p2 on the resource 1 and the resource 2 are both at the time when the data packet p1 and the data packet p2 are independently transmitted for the first time. after time. The correct decoding of the data packet p1 can quickly help the decoding of the data packet p2 in combination with the joint encoding data packet, and the correct decoding of the data packet p2 can quickly help the decoding of the data packet p1 in combination with the joint encoding data packet. In network coding, this scheme can provide a larger iterative decoding time space for joint channel and network coding (JCNC) decoding of p1 and p2 data packets.

Optionally, in this embodiment of the present application, when the joint encoding method includes network encoding, the number of joint encoding data packets is greater than or equal to 2, and the first time-frequency resource includes multiple resource configurations, the joint encoding data packet is mapped to The situation of the first time-frequency resource may be: the first communication apparatus maps the jointly encoded data packet to multiple resource configurations.

In this case, the network coding data packets are mapped to multiple resource configurations, which is a one-to-one mapping, and different network coding data packets are mapped to different resource configurations.

To illustrate with a specific example, the first communication device performs joint encoding on data packets 1 and 2 to obtain three jointly encoded data packets: joint encoded data packet a, joint encoded data packet b, and joint encoded data packet c. The first communication device maps the obtained three jointly encoded data packets to three different resource configurations: resource configuration 1, resource configuration 2 and resource configuration 3, and sends them independently. The second communication device receives the jointly coded data packet a, the jointly coded data packet b and the jointly coded data packet c on the resource configuration 1, the resource configuration 2 and the resource configuration 3 respectively, and performs independent decoding respectively.

Optionally, in the embodiment of the present application, considering that the concatenated coding data packets are generally large, when the joint coding mode includes concatenated coding, the number of the joint coding data packets is greater than or equal to 1, and the first time-frequency resource includes: In the case of multiple resource configurations, the case where the jointly coded data packet is mapped to the first time-frequency resource may be: the first communication apparatus maps each jointly coded data packet in the at least one jointly coded data packet to the multiple resource configurations, respectively.

In this case, when the number of concatenated encoded data packets is greater than 2, each concatenated encoded data packet in the partially concatenated encoded data packets can be mapped to multiple resource configurations respectively, and one of the partially concatenated encoded data packets can be mapped to multiple resource configurations. One-to-one, or many-to-one mapping on resource configuration. Alternatively, each concatenated encoded data packet is mapped to multiple resource configurations in a one-to-many manner, which is not limited in this embodiment of the present application.

To illustrate with a specific example, the first communication device performs concatenated encoding on two data packets 1 and one data packet 2 to obtain one concatenated encoded data packet, and maps the obtained concatenated encoded data packet on the resource configuration. 1 and resource configuration 2 are sent concurrently, that is, resource configuration 1 transmits part of the concatenated encoded data packet, and resource configuration 2 transmits another part of the concatenated encoded data packet. The second communication apparatus needs to receive the respectively mapped parts of the concatenated encoded data packets on the resource configuration 1 and the resource configuration 2, and perform decoding together.

It should be noted that this embodiment of the present application does not limit how the above-mentioned multiple resource configurations are configured, that is, the above-mentioned multiple resource configurations can reuse N time-frequency resource configurations for repeatedly sending data packets, and/or, the above-mentioned multiple resource configurations A configuration can be configured to authorize resources. Meanwhile, the above-mentioned multiple resource configurations may be continuous or discontinuous in time domain or frequency domain.

In addition, the embodiments of the present application also support the mapping method of mapping one network coding data packet to multiple resource configurations respectively. For details, please refer to the above description of the mapping of concatenated coding data packets to multiple resource configurations, which is not repeated here. Repeat.

Based on the data transmission method provided by the embodiment of the present application, the first communication device can select different ways of mapping the jointly coded data packets to resources according to the joint coding mode, which meets the requirements for transmitting different jointly coded data packets.

Exemplarily, the following describes that in the case where the first communication device determines the time-frequency resource corresponding to the N data packets as the first time-frequency resource, when the joint coding mode is network coding, the joint coded data packets are distributed in the first time-frequency resource. Several solutions on time-frequency resources:

Scheme 1: N data packets for repeated transmission correspond to a simultaneous transmission time window, and within the simultaneous transmission time window, the jointly encoded data packets are evenly distributed on the resources corresponding to the N data packets.

Exemplarily, as shown in FIG. 14 , there are 3 jointly encoded data packets obtained by the joint encoding of data packet 1, data packet 2 and data packet 3. , Resource 2 and Resource 3 respectively have a jointly encoded data packet, and are transmitted within the simultaneous sending time window corresponding to data packet 1, data packet 2 and data packet 3. It can be seen that the jointly encoded data packets are evenly distributed on the corresponding resource 1, resource 2 and resource 3. Since there are the same number of joint coding packets on each resource, the impact on each independently transmitted data packet is the same in terms of resource occupation.

Scheme 2: N data packets for repeated transmission correspond to a simultaneous transmission time window, and the jointly coded data packets are distributed maximally within the simultaneous transmission time window.

Specifically, the first communication device maximizes the configuration of the joint-coded data packet within the simultaneous transmission time window corresponding to the N data packets, so that all resources in the simultaneous transmission time window can be used to transmit the joint-coded data packet, or in addition to the data In addition to the resources occupied by the first independent transmission of the packet, all the resources in the simultaneous transmission time window can be used to transmit the jointly encoded data packet. As shown in Figure 15, the jointly encoded data packet obtained by the joint encoding of data packet 1, data packet 2 and data packet 3 occupies all resources of resource 1 and resource 2 in the simultaneous transmission time window, because data packet 3 is independent for the first time The start time of transmission is in the simultaneous sending time window, occupying a resource of resource 3 in the simultaneous sending time window, so on resource 3, the jointly encoded data packet occupies in addition to the resource used for sending data packet 3, at the same time. For the remaining resources in the sending time window, a total of 5 jointly coded data packets are distributed. This scheme can maximize the time-frequency resources for jointly coded data packets within the common simultaneous transmission time window, and can further increase the diversity gain compared with the second scheme.

Scheme 3: N is greater than 2, the number of simultaneous transmission time windows is greater than or equal to 2, N data packets for repeated transmission correspond to different simultaneous transmission time windows, and the jointly encoded data packets are distributed in different simultaneous transmission time windows.

This solution can be called segmented joint coding time window: when performing joint coding on N data packets, the jointly coded data packets supporting the first communication device contain different numbers of Duplicate data packets of multiple data packets; in other words, if the number of resource configurations authorized by the configuration is N, and the total number of original data packets is N, the jointly encoded data packets configured by each resource at different times can be jointly encoded by different numbers of original data packets. Obtained, the range is 2-N.

Specifically, because when N is greater than 2, different data packets may correspond to different simultaneous transmission time windows and different jointly encoded data packets, so the first communication device in different simultaneous transmission time windows, for different joint encoded data packets The package configures time-frequency resources respectively. In this case, the jointly coded data packets can be uniformly distributed or maximized in different simultaneous transmission time windows. Take the maximum distribution of the jointly encoded data packets in different simultaneous transmission time windows as an example, as shown in Figure 16, 3 data packets correspond to 3 simultaneous transmission time windows, and the simultaneous transmission time window 1 is the data packet 1 and the data packet 2. The corresponding simultaneous sending time window, in which, because the time of the first independent transmission of the data packet 2 is within the simultaneous sending time window 1, which occupies a resource of the resource 2, so the simultaneous sending time window 1 can be used to transmit the data packets 1 and 1. The number of time-frequency resource blocks of the jointly encoded data packet obtained by the joint encoding of the data packet 2 is one, and the jointly encoded data packets obtained by the joint encoding of the data packet 1 and the data packet 2 are distributed on the resource 1 respectively. Simultaneous sending time window 2 is the simultaneous sending time window corresponding to data packet 1, data packet 2 and data packet 3, wherein the time window that can be used to transmit the jointly encoded data packet obtained by the joint encoding of data packet 1, data packet 2 and data packet 3 The number of frequency resource blocks is 5, and the jointly coded data packets obtained by the joint coding of data packet 1, data packet 2 and data packet 3 are distributed on resource 1, resource 2 and resource 3 respectively. The simultaneous sending time window 3 is the simultaneous sending time window corresponding to the data packet 2 and the data packet 3, wherein the number of time-frequency resource blocks that can be used to transmit the jointly encoded data packet obtained by the joint encoding of the data 2 and the data packet 3 is 2, The jointly encoded data packets obtained by the joint encoding of data 2 and data packet 3 are distributed on resource 2 and resource 3, respectively.

It should be noted that, in the embodiment of the present application, when the number of simultaneous transmission time windows is greater than or equal to 2, it is not limited that the jointly encoded data packets obtained by the joint encoding of the data packets corresponding to a certain simultaneous transmission time window must be in the corresponding simultaneous transmission time window. Transmission within the sending time window. For example, in the case of the above scheme 3, the jointly encoded data packet obtained by the joint encoding of data packet 1 and data packet 2 can also be transmitted in the simultaneous transmission time window 2, because the simultaneous transmission time window 2 is also in the data packet 1 and the data packet. 2 Within the corresponding sending start time and sending end time.

It can be seen from the above that the corresponding sending start time and sending end time of N data packets affect the time domain length and position of different sending time windows, which in turn affects the number of time-frequency resource blocks that can be used to transmit jointly coded data packets. The number and location of the time-frequency resource blocks that can be used to transmit the jointly coded data packets will affect the number of the jointly coded data packets.

Optionally, the data transmission method provided in the embodiment of the present application further includes: the second communication device sends second indication information to the first communication device, and correspondingly, the first communication device receives the second indication information from the second communication device , the second indication information is used to instruct the first communication device to stop sending the joint encoded data packet, or the second indication information is used to indicate that the second communication device has correctly received the joint encoded data packet, or the second indication information is used to instruct the first communication The device initiates a new joint code. According to the second indication information, the first communication device stops sending the joint coding data packet or prepares for the next joint coding or starts a new joint coding.

Exemplarily, after receiving the second indication information instructing the first communication device to stop sending the jointly coded data packet, the first communication device stops sending the jointly coded data packet. After receiving the second indication information indicating that the second communication device has correctly received the joint encoding data packet, the first communication device stops sending the joint encoding data packet or prepares for the next joint encoding. After receiving the second indication information for instructing the first communication device to start new joint coding, the first communication apparatus starts new joint coding. Optionally, the second indication information used to instruct the first communication apparatus to start the new joint encoding may further include parameters for the new joint encoding, such as the start time of the new joint encoding, the transmission times of the joint encoding data packet, and the like. Optionally, the second indication information may be response information sent by the second communication apparatus to the first communication apparatus after receiving the jointly encoded data packet. In a possible implementation manner, after the above step S1005, the first communication device receives the second indication information from the second communication device.

Based on the data transmission method provided by the embodiment of the present application, the first communication device can be made to stop the joint encoding data packet being sent according to the second indication information from the second communication device, or prepare for the next joint encoding, or start a new joint encoding. The joint encoding of the first communication device makes the transmission of the joint encoded data packet more in line with the requirements of the second communication device, which saves communication resources and reduces energy consumption.

It can be seen from the above that the data transmission method provided in the embodiment of the present application can be applied to various scenarios, in addition to the point-to-point scenario, it also includes scenarios with multiple sending nodes, such as a relay scenario, a terminal cooperation scenario, or a Multi-TRP scenario. . Because in the point-to-point scenario, the interaction is between the first communication device and the second communication device, the steps of the data transmission method provided by the embodiments of the present application are relatively clear. Therefore, in the following scenarios of multiple sending nodes, the embodiments of the present application Provided data transfer methods are introduced.

Scenario 1: Multi-TRP scenario.

In the Multi-TRP scenario, there are multiple sending and receiving nodes, and the first communication device may be a node among the multiple sending and receiving nodes. Exemplarily, with reference to FIG. 8 , the data transmission method provided by the embodiment of the present application may specifically include the following steps:

(a) A plurality of sending nodes (eg, node 1, node 2, and node 3) send the first data packet to node 4, respectively. When multiple sending nodes send data packets respectively, they may be sent at the same time. For example, multiple sending nodes have data packets to be sent and send them at the same time. Alternatively, the transmission is performed in chronological order, for example, multiple nodes obtain data packets from the base station or other communication devices and send the data packets to node 4 according to the order in which the data packets arrive at each sending node.

(b) Multiple sending nodes (such as node 1, node 2, and node 3) or a central node (such as node 2) send different joint coded data in different spaces according to the transmission configuration indicator (TCI) Bag. Among them, different joint coding data packets correspond to the same redundancy version and different coding coefficients. For the determination of the coding coefficients, reference may be made to the description of step S1002 above.

In addition, optionally, the sending node performing the joint encoding stores the resource configuration, the first data packet, the correspondence between the joint encoding data packet and the RV version, that is, different data packets correspond to different transmission resources, and different joint encoding data Packets are encoded jointly by specific redundant versions of packets. For example, when there are 3 resource configurations, and there are 2 data packets to be transmitted independently and 1 jointly encoded data packet to be transmitted: on resource configuration 1, data packet 1 of redundancy version 0 is independently transmitted, you can use RV10 refers to redundancy version 0 of data packet 1; in resource configuration 2, data packet 2 of redundancy version 0 is independently transmitted, which can be used in RV20 to refer to redundancy version 0 of data packet 2; in resource configuration 3, The joint encoding data packet obtained by the joint encoding of the transmission data packet 1 and the data packet 2, the redundant versions of the data packets 1 and 2 participating in the joint encoding data packet are complementary to the redundant versions of the independent data packet 1 and the independent data packet 2. That is, the redundant version of the data packet 1 participating in the encoding is RV2 which is complementary to RV0, and RV12 is used to represent the redundant version of the data packet 1 participating in the joint encoding. The redundant version of the data packet 2 participating in the joint encoding is RV2 which is complementary to RV0, and RV22 is used to represent the redundant version of the data packet 2 participating in the joint encoding. RVr2 can be used to refer to the redundant version of the jointly encoded packet. Among them, RVr2 corresponds to {RV12XOR RV22},

Optionally, for multi-point joint coding transmission, the reference signal for transmitting the joint coding data packet may have a QCL relationship with the reference signal corresponding to transmitting a certain first data packet.

It should be noted that the above steps are to illustrate how the first communication apparatus performs joint coding and transmission in a Multi-TRP scenario, and the sequence of the above steps described above does not represent the time sequence between the above steps.

Scenario 2: Terminal device collaboration scenario

The terminal device cooperation scenario is similar to the Multi-TRR scenario. Exemplarily, with reference to FIG. 8 , the terminal device 1 and the terminal device 2 send the first data packet to the terminal device 3, for example, in a time-division multiplexing manner. After each terminal device monitors and obtains the data packets sent by other terminal devices, it performs joint encoding with its own existing data packets to obtain joint encoded data packets, and then sends the joint encoded data packets to terminal device 3. For details, please refer to Multi-TRP The relevant descriptions in the scenarios are not repeated here.

Scenario 3: Relay Scenario

Exemplarily, referring to FIG. 7 , after acquiring the data packets sent by node 1 and node 2 , the relay device performs joint encoding on the acquired data packets to obtain joint encoded data packets, and sends the joint encoded data packets to node 3 . For details, please refer to the relevant description in the Multi-TRP scenario, which will not be repeated here.

For the above step S1004, in this embodiment of the present application, how the second communication apparatus determines the first time-frequency resource for transmitting the jointly coded data packet may refer to the description of step S1003 above, and will not be repeated here. Optionally, in this embodiment of the present application, the second communication device determines the first time-frequency resource for transmitting the jointly encoded data packet, which may also be referred to as the second communication device determining the first time-frequency resource for receiving the jointly encoded data packet. resource.

For the implementation of the above step S1005 in this embodiment of the present application, reference may be made to the prior art for details, and details are not described herein again.

It should be noted that, in this embodiment of the present application, the information exchanged between the first communication device, the second communication device, or the third communication device, such as the information such as the first indication information above, may be in different reference signals, CRCs, etc. The scrambling sequence, the control channel, the data channel, the content carried by the medium access layer signaling or the radio resource configuration signaling, etc. are transmitted, which is not limited in this embodiment of the present application.

To sum up, taking the transmission resources as CG resources as an example, FIG. 17 shows the situation of repeated transmission of data packets in the 5G system standard, and the data transmission method based on the embodiment of the present application, when the joint encoding method is network encoding, the data packets are transmitted repeatedly. Three cases of joint encoding and transmission. As shown in Figure 17, in the NR system, the data packet x1 is repeatedly transmitted on CG1 for 4 times, and the data packet x2 is repeatedly transmitted on CG2 for 4 times. Example 1, Example 2, and Example 3 are respectively the cases in which the data packets 1 and 2 are jointly encoded and transmitted when there are 2, 4, and 5 jointly encoded data packets in the embodiments of the present application. Among them, in Example 1, Example 2 and Example 3, the equations above the data packet are jointly encoded, such as a11 ^* x1+a21 ^* x2, a12 ^* x1+a22 ^* x2, a13 ^* x1+a23 ^* x2, a14 ^* x1+a24 ^* x2 or a15 ^* x1+a25 ^* x2 is a system of equations composed of coding coefficients and corresponding data packets participating in joint coding. As can be seen from FIG. 17 , compared with the data transmission method provided in the embodiment of the present application, the total number of resources occupied by the transmitted data packets is the same in the prior art, but compared with the prior art, in the embodiment of the present application, , the same data packet can occupy more resources, and the diversity degree has been greatly improved. Specifically, as shown in FIG. 17 , a total of 8 resource blocks can be used to transmit data packets, the data packet x1 is independently transmitted 4 times in the prior art, and a total of 4 resource blocks can transmit and decode the data packet x1, while the present application In the embodiment, in addition to the resource blocks of the independent transmission data packet x1, there are also resource blocks occupied by the jointly encoded data packet that can decode the data packet x1. For example, in Example 1, there are three resource blocks of the independent transmission data packet x1, and the transmission joint There are two resource blocks for encoding the data packet. In addition to receiving and decoding the data packet x1 on the resource block of the independent transmission data packet x1, the second communication device can also receive and decode the jointly encoded data packet on these two resource blocks. To get the data packet x1, it is equivalent to that the data packet x1 occupies a total of 5 resource blocks. It can be seen from the comparison that in the prior art and the embodiment of the present application, the number of resource blocks that can be used to transmit data packets is also 8. Assuming that channel fading and interference are experienced, the data packets x1 distributed on the 4 resource blocks may not be correct. It is decoded and received, but the data packets transmitted on the 5 resource blocks may be correctly received on the 5th resource, which improves the diversity and thus the reliability. The same is true for the data packet x2, so the data transmission method provided by the embodiment of the present application can improve the diversity degree and thus increase the reliability under the condition that the transmission resources remain unchanged.

On the other hand, when the joint encoding method is concatenated encoding, the length of the concatenated joint encoded data packet is greater than the original data packet length. For example, under the same channel conditions, errors may occur in the transmission of the original data packets after channel coding, but the concatenated data packets can still be transmitted correctly after channel coding, thereby improving reliability and diversity.

To sum up, the data transmission method provided by the embodiments of the present application can jointly encode the data packets originally used for independent repeated transmission, and transmit the obtained jointly encoded data packets, which increases the diversity degree of each data packet, and can use the same The resources can reach a higher diversity order, which improves the efficiency of resource use and the reliability of data transmission.

Wherein, the actions of the first communication device, the second communication device or the third communication device in the above steps S1001 to S1005 can be performed by the processor 401 in the communication device 400 shown in FIG. 4 calling the application code stored in the memory 403 to instruct The communication device executes; this embodiment does not impose any limitation on this.

In the following, the first communication device is taken as the main body, and when the joint coding mode is network coding or concatenated coding, the overall flow of the embodiment of the present application will be introduced.

Optionally, the overall process of this embodiment of the present application is shown in FIG. 18 . First, the first communication device acquires the parameter configuration of the plurality of data packets to be jointly encoded. For details, see the description of step S1002 above. Then, the first communication device performs joint coding and transmission on the plurality of data packets according to the acquired parameter configuration of the plurality of data packets. For details, please refer to the description of steps S1002, S1002 and S1005 above.

Optionally, when the joint coding method is network coding, with reference to FIG. 18 , the further refinement process of the embodiment of the present application is shown in FIG. 19 , including the following steps S1901-S1904, wherein, step S1901-step S1902c is for the first step. A communication device obtains the refinement of the parameter configuration of the plurality of data packets for joint encoding, and steps S1903-S1904 are the refinement of the joint encoding and transmission of the plurality of data packets performed by the first communication device:

S1901. The first communication apparatus acquires a resource configuration for transmitting multiple data packets. For details, see the description of step S1001 above.

S1902a, the first communication apparatus acquires the number of jointly encoded data packets and/or the number of times of repeated transmission of the data packets.

S1902b, the first communication apparatus acquires network coding coefficients used for network coding.

S1902c: The first communication apparatus acquires the redundancy version configuration of the data packet participating in the joint encoding. The above steps S1902a-S1902c can be found in the description of step S1002 above.

S1903. The first communication device performs network coding according to the acquired parameters to obtain a network coding data packet. For details, see the description of step S1002 above.

S1904 , the first communication device maps the obtained network coding data packets to resources of multiple data packets, respectively, and sends them. For details, see the description of step S1003 above.

It should be noted that there is no necessary order of execution between the above steps. For example, step S1901 may be executed first, and then step S1902a may be executed; or step S1902a may be executed first, and then step S1901 may be executed; or step S1901 and step S1901 may be executed simultaneously. Step S1902a, which is not specifically limited in this embodiment of the present application.

The following takes the time-frequency resources corresponding to the N data packets and the first time-frequency resource as the CG resource as an example to further introduce the network coding and transmission of the multiple data packets.

Optionally, as shown in FIG. 20 , in this embodiment of the present application, the overall process of network coding and transmission of multiple data packets by the first communication device on the CG resource includes steps S2001-S2004.

S2001. The first communication apparatus acquires the data packets and CG resources for network coding. For details, see the description of step S1001 above.

S2002. The first communication apparatus performs network coding on data packets transmitted in different CG resources to obtain network coded data packets. For details, see the description of step S1002 above.

S2003, the first communication device maps the obtained network coding data packets to different CG resources respectively. For details, see the description of step S1003 above.

S2004, the first communication apparatus sends a network coding data packet on each configured CG resource.

Wherein, the actions of the first communication device in the above steps S2001 to S2004 may be executed by the processor 401 in the communication device 400 shown in FIG. 4 by calling the application code stored in the memory 403 to instruct the communication device to execute. No restrictions apply.

In this embodiment of the present application, a further refinement process of performing network coding and transmission of multiple data packets by the first communication device on the CG resource may be as shown in FIG. 21 , including steps S2101-S2109. Among them, steps S2101-S2102 are the refinement of step S2001, steps S2103-S2105 are the refinement of step S2002, step S2106 is an optional step compared to FIG. 20, and steps S2107-S2108 are the refinement of step 2003 , step S2109 corresponds to step S2004.

S2101. The first communication device binds at least one parameter among parameters such as the number of network coding data packets, the number of times the data packets are repeatedly sent, the position of the network coding data packet in each CG resource, and the network coding coefficient, and other parameters through pre-configuration or pre-definition. The set of CG resources for network coding is used for network coding. Wherein, in this embodiment of the present application, binding a set of CG resources that can perform network coding can be understood as binding the number of CG resources and the corresponding configuration of CG resources.

S2102. The first communication device determines the data packets participating in the network coding and the CG resources for transmitting the network coding data packets according to the corresponding start time and end time of the at least two data packets or the corresponding simultaneous transmission time windows.

S2103. The first communication apparatus determines the RV of the data packet participating in the network coding.

S2104. When the time-frequency resource blocks used for transmitting the network-coded data packets are limited, the first communication apparatus preferentially performs network coding on the data packets of the low decoding capability RV. For details, please refer to the description of S1002 above.

S2105. The first communication device determines the network coding coefficient, and for details, see the description of S1002 above.

S2106. When the first communication apparatus independently determines the network coding coefficient, the network coding coefficient is sent to the second communication apparatus in a signaling manner, so that the second communication apparatus learns the network coding coefficient.

S2107. The first communication device performs network coding, and maps the obtained network coding data packets to different CG resources, which may share the same CG resource configuration with data packets that do not participate in network coding.

S2108. On different CG resources, before the common transmission end time of the data packets, the network coding data packets are evenly distributed on different CG resources. If there are remaining resources after the even distribution, the first communication device continues the network Encode and distribute the resulting network-encoded packets over the remaining resources.

S2109: The first communication apparatus sends a network coding data packet on each configured CG resource.

Wherein, the actions of the first communication device in the above steps S2101 to S2109 may be executed by the processor 401 in the communication device 400 shown in FIG. 4 calling the application code stored in the memory 403 to instruct the communication device to execute; No restrictions apply.

Optionally, when the mode of joint coding is concatenated coding, with reference to FIG. 18 , the further refinement process of this embodiment of the present application is shown in FIG. 22 , including the following steps S2201-S2205, wherein step S2201-step S12202b is a pair of The first communication device obtains the refinement of the parameter configuration of the plurality of data packets for joint encoding, and steps S2203-S2205 are the refinement of the joint encoding and transmission of the plurality of data packets performed by the first communication device:

S2201. The first communication apparatus acquires a resource configuration for transmitting multiple data packets. For details, see the description of step S1001 above.

S2202a. The first communication apparatus acquires the number of jointly encoded data packets and/or the number of times of repeated transmission of the data packets.

S2202b. The first communication apparatus acquires the concatenation sequence of the jointly encoded data packets. The above steps S2202a-S2202b can be found in the description of step S1002 above.

S2203: The first communication device performs concatenated encoding according to the acquired parameters to obtain a concatenated encoded data packet. For details, see the description of step S1002 above.

S2204. The first communication apparatus acquires the redundancy version configuration of the jointly encoded data packet. For details, see the description of step S1002 above.

S2205: The first communication device maps the obtained concatenated encoded data packets to the resources of multiple data packets after channel coding, and sends them. For details, see the description of step S1003 above.

It should be noted that there is no necessary order of execution between the above steps. For example, step S2201 may be executed first, and then step S2202a may be executed; or step S2202a may be executed first, and then step S2201 may be executed; or steps S2201 and S2201 may be executed simultaneously. Step S2202a, which is not specifically limited in this embodiment of the present application.

The following takes the time-frequency resources corresponding to the N data packets and the first time-frequency resource as the CG resource as an example, to further introduce the concatenated coding and transmission of multiple data packets.

Optionally, as shown in FIG. 23 , in this embodiment of the present application, the overall process of network coding and transmission of multiple data packets by the first communication device on the CG resource includes steps S2301-S2304.

S2301. The first communication apparatus acquires the data packet and CG resource for concatenated encoding. For details, see the description of step S1001 above.

S2302. The first communication apparatus performs concatenated encoding on data packets transmitted in different CG resources to obtain concatenated encoded data packets. For details, see the description of step S1002 above.

S2303. The first communication apparatus maps the obtained concatenated encoded data packets to different CG resources respectively. For details, see the description of step S1003 above.

S2304. The first communication apparatus sends a concatenated encoded data packet on each configured CG resource.

Wherein, the actions of the first communication device, the second communication device or the third communication device in the above steps S2301 to S2304 may be performed by the processor 401 in the communication device 400 shown in FIG. 4 calling the application code stored in the memory 403 to instruct The communication device executes; this embodiment does not impose any limitation on this.

Optionally, in this embodiment of the present application, the step-by-step refinement process for the first communication apparatus to perform concatenated encoding and transmission of multiple data packets on the CG resource may be as shown in FIG. 24 , including steps S2401-S2409. Among them, step S2401-step S2402 is the refinement of step S2301, step S2403-step S2404 is the refinement of step S2302, step S2405 is an optional step compared with FIG. 23, and steps S2406-S2407 are the steps of step S2302. For refinement, step S2408 corresponds to step S2304.

S2401. The first communication device binds the number of concatenated encoded data packets, the number of times of repeated transmission of concatenated encoded data packets, the position of concatenated encoded data packets in each CG resource, and the number of concatenated encoded data packets through preconfiguration or predefinition At least one parameter in parameters such as RV and a set of CG resources that can be used for concatenated encoding are used for concatenated encoding. Wherein, in this embodiment of the present application, binding a set of CG resources that can perform concatenated encoding can be understood as binding the number of CG resources and the corresponding configuration of CG resources.

S2402. The first communication device determines the data packets participating in the concatenated encoding and the CG resource for transmitting the concatenated encoded data packets according to the corresponding start time and end time of the at least two data packets or the corresponding simultaneous transmission time windows.

S2403. The first communication apparatus determines the concatenation sequence of the concatenated encoded data packets, performs concatenated encoding on the data packets, and adds a CRC.

S2404. The first communication apparatus determines the RV of the concatenated encoded data packet.

S2405. When the first communication device autonomously determines the concatenation sequence or the RV of the concatenated encoded data packet, it sends the concatenated sequence or the RV of the concatenated encoded data packet to the second communication device in a signaling manner, so that the second communication device The device knows the RV of the concatenated sequence or concatenated encoded packets.

S2406. The first communication apparatus maps the obtained concatenated encoded data packets on different CG resources, and the CG resources may share the same CG resource configuration with the data packets that do not participate in the concatenated encoding.

S2407. On different CG resources, before the common transmission end time of the data packets, the concatenated encoded data packets are evenly distributed on different CG resources.

S2408. The first communication apparatus sends a concatenated encoded data packet on each configured CG resource.

Wherein, the actions of the first communication device in the above steps S2301 to S2309 may be executed by the processor 401 in the communication device 400 shown in FIG. 4 by calling the application code stored in the memory 403 to instruct the communication device to execute; No restrictions apply.

It can be understood that, in the above embodiments, the methods and/or steps implemented by the first communication device may also be implemented by components (such as chips or circuits) that can be used in the first communication device; The methods and/or steps may also be implemented by components (eg chips or circuits) usable in the second communication device.

It can be understood that, in order to implement the above-mentioned functions, the first communication device or the second communication device includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the first communication device or the second communication device may be divided into functional modules according to the foregoing method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated. in a processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

Exemplarily, FIG. 25 shows a schematic structural diagram of a communication apparatus 250 . The communication device 250 includes a processing module 2501 and a transceiver module 2502 . The transceiver module 2502 may also be referred to as a transceiver unit to implement a transceiver function, for example, a transceiver circuit, a transceiver, a transceiver or a communication interface.

Taking the communication device 250 as the first communication device in the above method embodiment as an example, the processing module 2501 is configured to acquire N data packets for repeated transmission, where N is a positive integer and N≥2; The data packets are jointly encoded to obtain at least one joint encoded data packet; wherein, each joint encoded data packet is obtained by joint encoding of at least two data packets in the N data packets; it is also used to determine the joint encoding for transmission. The first time-frequency resource of the data packet; the transceiver module 2502 is configured to send the jointly encoded data packet to the second communication device on the first time-frequency resource.

In a possible implementation manner, the processing module 2501 is configured to jointly encode the N data packets including: jointly encoding the N data packets according to at least one of the following parameters: the size of each data packet in the N data packets, The number of data packets participating in the joint coding, the number of repeated transmissions of each data packet, the number of jointly coded data packets, the coding coefficients for jointly coding N data packets, the size of the field corresponding to the coding coefficients, and the size of each data packet. Redundancy version configuration of the packets, the sending start time corresponding to each of the N data packets, and the sending end time corresponding to each of the N data packets.

In a possible implementation manner, the coding coefficients are coding coefficients preconfigured by the first communication device; or, the coding coefficients are determined by the processing module 2501 according to a set of coding coefficients; or, the coding coefficients are determined by the processing module 2501 according to the following At least one parameter is determined: the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets or the size of the field corresponding to the encoding coefficient.

In a possible implementation manner, before the common sending end time of the N data packets, the transceiver module 2502 is further configured to send the first data packet to the second communication device on the time-frequency resource corresponding to the N data packets; The first data packet is at least one data packet among the N data packets.

In a possible implementation manner, the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding constitute complementary redundant versions.

In a possible implementation manner, the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.

In a possible implementation manner, the jointly coded data packet includes M jointly coded data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the jointly coded data packet is the processing module according to the M jointly coded data packets. The corresponding resource positions on the first time-frequency resource are determined in sequence.

In a possible implementation, the joint encoding method includes network encoding and/or concatenated encoding; when the sum of the lengths of all data packets in the N data packets is equal to or less than a preset threshold, the joint encoding method is concatenation coding. Alternatively, when the length of each of the N data packets is greater than the preset threshold, the joint encoding method is network encoding. Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.

In a possible implementation manner, the transceiver module 2502 is further configured to send the joint encoding method to the second communication device, and the joint encoding method is used for the second communication device to decode the joint encoded data packet from the transceiver module 2502 code.

In a possible implementation manner, the joint encoding manner includes concatenated encoding; wherein, the concatenation sequence of the joint encoding data packets is determined by the processing module 2501 according to the third indication information from the second communication device or the third communication device or, the concatenation sequence of the jointly encoded data packets is randomly determined by the processing module; or, the concatenated sequence of the jointly encoded data packets is determined by the processing module according to a preconfigured sequence.

In a possible implementation manner, the processing module 2501 is further configured to determine the first time-frequency resource for transmitting the joint-coded data packet, including: determining the time-frequency resource configuration corresponding to the N data packets as the first time-frequency resource configuration .

In a possible implementation manner, the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.

In a possible implementation, when the joint encoding method includes network encoding, the number of joint encoding data packets is greater than or equal to 2, and the first time-frequency resource includes multiple resource configurations, the processing module 2501 is further configured to: Map the joint coding data packets to multiple resource configurations respectively; when the joint coding method includes concatenated coding, the number of joint coding data packets is greater than or equal to 1, and the first time-frequency resource includes multiple resource configurations, the The processing module is also used to map each joint encoding data packet to multiple resource configurations.

Taking the communication device 250 as the second communication device in the above method embodiment as an example, in a possible implementation manner, the processing module 2501 is configured to determine the first time-frequency resource for transmitting the jointly encoded data packet; The encoded data packet is obtained by jointly encoding N data packets for repeated transmission by the first communication device, where N is a positive integer, and N≥2; wherein, each jointly encoded data packet is composed of N data packets. The transceiver module 2502 is configured to receive the jointly encoded data packet from the first communication device on the first time-frequency resource.

In a possible implementation manner, the transceiver module 2502 is further configured to send first parameter information to the first communication device, where the first parameter information is used by the first communication device to determine a coding coefficient for jointly encoding the N data packets; The first parameter information includes at least one of the following parameters: the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of jointly encoded data packets or the size of the field corresponding to the encoding coefficient.

In a possible implementation manner, before the common sending end time of the N data packets, the transceiver module 2502 is further configured to receive data from the first communication device or the third communication device on the time-frequency resources corresponding to the N data packets The first data packet; the first data packet is at least one data packet in the N data packets.

In a possible implementation manner, the jointly coded data packet includes M jointly coded data packets, where M is a positive integer, and M≥2; wherein, the spatial parameter of the jointly coded data packet is the first communication device according to the M jointly coded data packets The resource location sequence corresponding to the packet on the first time-frequency resource is determined.

In a possible implementation, the joint encoding method includes network encoding and/or concatenated encoding; when the sum of the lengths of all data packets in the N data packets is equal to or less than a preset threshold, the joint encoding method is concatenation coding; or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint coding method is network coding; or, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, And when the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode includes network coding and concatenated coding.

In a possible implementation manner, the transceiver module 2502 is further configured to receive a joint encoding method from the first communication device, and the joint encoding method is used for the processing module 2501 to decode the joint encoding data packet from the first communication device. code.

In a possible implementation, the joint encoding method includes concatenated encoding; the transceiver module 2502 is further configured to send third indication information to the first communication apparatus, where the third indication information is used by the first communication apparatus to determine the joint encoded data Cascading order of packages.

In a possible implementation manner, the joint encoding method includes concatenated encoding; the transceiver module 2502 is further configured to receive the concatenation sequence of the jointly encoded data packets from the first communication device, and the concatenated sequence of the joint encoded data packets uses In the processing module 2501, the jointly encoded data packet from the first communication device is decoded.

In this embodiment, the communication apparatus 250 is presented in the form of dividing each functional module in an integrated manner. "Module" herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.

In a simple embodiment, those skilled in the art can imagine that the communication device 250 may take the form of the communication device 400 shown in FIG. 4 .

For example, the

processor

401 or 407 in the communication apparatus 400 shown in FIG. 4 may invoke the computer execution instructions stored in the memory 403 to cause the communication apparatus 400 to execute the data analysis method in the above method embodiment. Specifically, the function/implementation process of the processing module 2501 in FIG. 25 can be implemented by the

processor

401 or 407 in the communication apparatus 400 shown in FIG. 4 calling the computer-executed instructions stored in the memory 403 .

Since the communication apparatus 250 provided in this embodiment can execute the above-mentioned data transmission method, the technical effects that can be obtained can be referred to the above-mentioned method embodiments, and details are not repeated here.

It should be noted that, one or more of the above modules or units may be implemented by software, hardware or a combination of both. When any of the above modules or units are implemented in software, the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and implement the above method flow. The processor can be built into a SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core for executing software instructions for operation or processing, the internal processing of the processor may further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (Programmable Logic Device) , or a logic circuit that implements dedicated logic operations.

When the above modules or units are implemented in hardware, the hardware can be CPU, microprocessor, digital signal processing (DSP) chip, microcontroller unit (MCU), artificial intelligence processor, ASIC, Any or any combination of SoCs, FPGAs, PLDs, dedicated digital circuits, hardware accelerators, or non-integrated discrete devices that may or may not run the necessary software to perform the above method flows.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to the memory through the interface, and when the at least one processor executes the computer program or instruction in the memory , the method in any of the above method embodiments is executed. In a possible implementation, the communication device further includes a memory. Optionally, the chip system may be composed of chips, or may include chips and other discrete devices, which are not specifically limited in this embodiment of the present application.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

Although the application is described herein in conjunction with the various embodiments, those skilled in the art will understand and understand from a review of the drawings, the disclosure, and the appended claims in practicing the claimed application. Other variations of the disclosed embodiments are implemented. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be combined to advantage.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

A data transmission method, characterized in that the method comprises:

The first communication device acquires N data packets for repeated transmission, where N is a positive integer, and N≥2;

The first communication device performs joint encoding on the N data packets to obtain at least one joint encoded data packet; wherein each joint encoded data packet is jointly encoded by at least two data packets in the N data packets encoded;

determining, by the first communication device, a first time-frequency resource for transmitting the jointly encoded data packet;

The first communication device sends the jointly encoded data packet to the second communication device on the first time-frequency resource.
The method according to claim 1, wherein the first communication device performing joint encoding on the N data packets comprises:

The first communication device jointly encodes the N data packets according to at least one of the following parameters:

The size of each data packet in the N data packets, the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets, the number of data packets for the N data packets Coding coefficients for joint coding, the size of the field corresponding to the coding coefficients, the redundancy version configuration of each data packet, the transmission start time corresponding to each data packet in the N data packets, the N data packets The sending end time corresponding to each data packet in the data packet.
The method according to claim 2, wherein the coding coefficient is a coding coefficient preconfigured by the first communication device;

Alternatively, the coding coefficient is determined by the first communication apparatus according to a set of coding coefficients;

Alternatively, the coding coefficient is determined by the first communication device according to at least one of the following parameters:

The number of the data packets participating in the joint encoding, the number of times of repeated transmission of each data packet, the number of the joint encoding data packets, or the size of the field corresponding to the encoding coefficient.
The method of claim 3, wherein at least one parameter for determining the coding coefficient is preconfigured by the first communication device;

Alternatively, the method further includes: the first communication device receiving first parameter information from the second communication device or the third communication device, the first parameter information including the at least one parameter for determining the coding coefficients parameter.
The method according to any one of claims 2-4, wherein the method further comprises:

The first communications device transmits the encoded coefficients to the second communications device, the encoded coefficients being used by the second communications device to decode jointly encoded data packets from the first communications device.
The method according to any one of claims 1-5, wherein the method further comprises:

The first communication apparatus receives first indication information from the second communication apparatus or the third communication apparatus, where the first indication information is used to indicate whether the first communication apparatus performs joint coding, and/or the The first indication information is used to instruct the first communication apparatus to perform a coding manner of joint coding.
The method according to any one of claims 1-6, wherein the method further comprises:

The first communication apparatus receives second indication information from the second communication apparatus, where the second indication information is used to instruct the first communication apparatus to stop sending the joint coding data packet; or, the second indication information The indication information is used to indicate that the second communication device has correctly received the joint coding data packet; or, the second indication information is used to instruct the first communication device to start a new joint coding;

The first communication device stops sending the joint coding data packet according to the second indication information;

Or, the first communication device prepares the next joint coding according to the second indication information;

Alternatively, the first communication apparatus starts new joint coding according to the second indication information.
The method according to any one of claims 1-7, wherein the method further comprises:

Before the common sending end time of the N data packets, the first communication device sends the first data packet to the second communication device on the time-frequency resources corresponding to the N data packets; the first communication device The data packet is at least one data packet among the N data packets.
The method according to claim 8, wherein the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding constitute complementary redundant versions.
The method according to claim 8 or 9, wherein the reference signal of the jointly encoded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.
The method according to any one of claims 8-10, wherein the first communication device performing joint encoding on the N data packets comprises:

The first communication device acquires a data packet of a second decoding capability redundancy version corresponding to a first data packet of a first decoding capability redundancy version, where the first decoding capability is higher than the second decoding capability ;

The first communication device jointly encodes the data packets of the redundant version of the second decoding capability.
The method according to any one of claims 1-11, wherein the jointly coded data packet comprises M jointly coded data packets, where M is a positive integer, and M≥2; The spatial parameter is determined by the first communication apparatus according to the sequence of resource positions corresponding to the M jointly encoded data packets on the first time-frequency resource.
The method according to any one of claims 1-12, wherein the joint coding method comprises network coding and/or concatenated coding;

When the sum of the lengths of all the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode is concatenated coding;

Or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint encoding method is network encoding;

Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.
The method according to any one of claims 1-13, wherein the method further comprises:

The first communication device sends the joint encoding method to the second communication device, and the joint encoding method is used by the second communication device for the joint encoding data from the first communication device packets are decoded.
The method according to any one of claims 1-14, wherein the joint coding method comprises concatenated coding; wherein,

The concatenation sequence of the jointly encoded data packets is determined by the first communication device according to the third indication information from the second communication device or the third communication device;

Or, the concatenation sequence of the jointly encoded data packets is randomly determined by the first communication device;

Alternatively, the concatenation order of the jointly encoded data packets is determined by the first communication device according to a preconfigured order.
The method of claim 15, wherein the method further comprises:

The first communication device sends the concatenated sequence of the jointly encoded data packets to the second communication device, and the concatenated sequence of the jointly encoded data packets is used by the second communication device to evaluate the data from the first communication device. The joint encoded packets of the communication device are decoded.
The method according to any one of claims 1-16, wherein the determining, by the first communication device, the first time-frequency resource for transmitting the jointly encoded data packet comprises:

The first communication apparatus determines the time-frequency resource configuration corresponding to the N data packets as the first time-frequency resource configuration.
The method according to any one of claims 1-17, wherein the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.
The method according to any one of claims 1-18, wherein when the joint encoding method includes network encoding, the number of the joint encoding data packets is greater than or equal to 2, and the first time-frequency When the resource includes multiple resource configurations, the method further includes:

The first communication device maps the jointly encoded data packets to the multiple resource configurations respectively;

When the joint encoding method includes concatenated encoding, the number of the joint encoding data packets is greater than or equal to one, and the first time-frequency resource includes multiple resource configurations, the method further includes:

The first communication device maps each of the jointly encoded data packets to a plurality of resource configurations.
A data transmission method, characterized in that the method comprises:

The second communication device determines the first time-frequency resource for transmitting the jointly encoded data packet; wherein the jointly encoded data packet is obtained by the first communication device jointly encoding N data packets for repeated transmission, N is a positive integer, N≥2; wherein, each jointly encoded data packet is obtained by joint encoding of at least two data packets in the N data packets;

The second communication device receives the jointly encoded data packet from the first communication device on the first time-frequency resource.
The method of claim 20, wherein the method further comprises:

The second communication device sends first parameter information to the first communication device, where the first parameter information is used by the first communication device to determine the coding coefficients for jointly encoding the N data packets; wherein, The first parameter information includes at least one of the following parameters:

The number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets, or the size of the field corresponding to the encoding coefficient.
The method according to claim 20 or 21, wherein the method further comprises:

The second communication device receives, from the first communication device, coding coefficients for jointly encoding the N data packets, where the coding coefficients are used by the second communication device to perform encoding on the N data packets from the first communication device. The jointly encoded data packets are decoded.
The method according to any one of claims 20-22, wherein the method further comprises:

The second communication apparatus sends first indication information to the first communication apparatus, where the first indication information is used to indicate whether the first communication apparatus performs joint coding, and/or the first indication information is used for Instruct the first communication apparatus to perform a coding method for joint coding.
The method according to any one of claims 20-23, wherein the method further comprises:

The second communication apparatus sends second indication information to the first communication apparatus, where the second indication information is used to instruct the first communication apparatus to stop sending the joint coding data packet; or, the second indication The information is used to indicate that the second communication apparatus has correctly received the joint coding data packet; or, the second indication information is used to instruct the first communication apparatus to start new joint coding.
The method according to any one of claims 20-24, wherein the method further comprises:

Before the common sending end time of the N data packets, the second communication device receives the first data from the first communication device or the third communication device on the time-frequency resource corresponding to the N data packets packet; the first data packet is at least one data packet in the N data packets.
The method according to claim 25, wherein the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding constitute complementary redundant versions.
The method according to claim 25 or 26, wherein the reference signal of the jointly coded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.
The method according to any one of claims 20-27, wherein the jointly encoded data packet comprises M jointly encoded data packets, where M is a positive integer, and M≥2; The spatial parameter is determined by the first communication apparatus according to the sequence of resource positions corresponding to the M jointly encoded data packets on the first time-frequency resource.
The method according to any one of claims 20-28, wherein the joint coding method comprises network coding and/or concatenated coding;

When the sum of the lengths of all the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode is concatenated coding;

Or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint encoding method is network encoding;

Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.
The method according to any one of claims 20-29, wherein the method further comprises:

the second communication device receives the joint encoding method from the first communication device, the joint encoding method is used for the second communication device to perform the joint encoding data from the first communication device packets are decoded.
The method according to any one of claims 20-30, wherein the joint coding method comprises concatenated coding; the method further comprises:

The second communication apparatus sends third indication information to the first communication apparatus, where the third indication information is used for the first communication apparatus to determine a concatenation sequence of the jointly encoded data packets.
The method according to any one of claims 20-31, wherein the joint coding method comprises concatenated coding; the method further comprises:

The second communication device receives the concatenation sequence of the jointly encoded data packets from the first communication device, and the concatenation sequence of the jointly encoded data packets is used by the second communication device for the concatenation of the jointly encoded data packets from the first communication device. The jointly encoded data packets of the communication device are decoded.
The method according to any one of claims 20-32, wherein the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.
A first communication device, characterized in that the first communication device comprises: a processing module and a transceiver module;

The processing module is used to obtain N data packets for repeated transmission, where N is a positive integer, and N≥2;

The processing module is further configured to jointly encode the N data packets to obtain at least one jointly encoded data packet; wherein each joint encoded data packet is composed of at least two data packets in the N data packets. obtained from the joint encoding of the package;

The processing module is further configured to determine a first time-frequency resource for transmitting the joint encoded data packet;

The transceiver module is configured to send the jointly encoded data packet to the second communication device on the first time-frequency resource.
The first communication device according to claim 34, wherein the processing module configured to jointly encode the N data packets comprises: jointly encoding the N data packets according to at least one of the following parameters:

The size of each data packet in the N data packets, the number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of the joint encoding data packets, the number of data packets for the N data packets Coding coefficients for joint coding, the size of the field corresponding to the coding coefficients, the redundancy version configuration of each data packet, the transmission start time corresponding to each data packet in the N data packets, the N data packets The sending end time corresponding to each data packet in the data packet.
The first communication device according to claim 35, wherein the coding coefficient is a coding coefficient preconfigured by the first communication device;

Alternatively, the coding coefficient is determined by the first communication apparatus according to a set of coding coefficients;

Alternatively, the coding coefficient is determined by the first communication device according to at least one of the following parameters:

The number of the data packets participating in the joint encoding, the number of times of repeated transmission of each data packet, the number of the joint encoding data packets, or the size of the field corresponding to the encoding coefficient.
The first communication device of claim 36, wherein at least one parameter for determining the coding coefficients is preconfigured by the first communication device;

Alternatively, the transceiver module is further configured to receive first parameter information from the second communication device or the third communication device, where the first parameter information includes the at least one parameter used to determine the coding coefficient.
The first communication device according to any one of claims 35-37, characterized in that:

The transceiver module is further configured to send coding coefficients to the second communication device, where the coding coefficients are used by the second communication device to decode the jointly encoded data packet from the first communication device.
The first communication device according to any one of claims 34-38, wherein,

The transceiver module is further configured to receive first indication information from the second communication device or the third communication device, where the first indication information is used to indicate whether the processing module performs joint coding, and/or the The first indication information is used to indicate a coding manner for the processing module to perform joint coding.
The first communication device according to any one of claims 34-39, wherein,

The transceiver module is further configured to receive second indication information from the second communication device, where the second indication information is used to instruct the transceiver module to stop sending the joint encoded data packet; or, the second indication information The indication information is used to indicate that the second communication device has correctly received the joint coding data packet; or, the second indication information is used to instruct the processing module to start a new joint coding;

The transceiver module is further configured to stop sending the joint encoded data packet according to the second indication information;

Alternatively, the processing module is further configured to prepare the next joint coding according to the second indication information;

Alternatively, the processing module is further configured to start a new joint encoding.
The first communication device according to any one of claims 34-40, wherein,

The transceiver module is further configured to send the first data packet to the second communication device on the time-frequency resource corresponding to the N data packets before the common sending end time of the N data packets; the The first data packet is at least one data packet among the N data packets.
The first communication device according to claim 41, wherein the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding constitute complementary redundant versions.
The first communication apparatus according to claim 41 or 42, wherein the reference signal of the jointly coded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.
The first communication device according to any one of claims 41-43, wherein the processing module configured to jointly encode the N data packets comprises: obtaining the first data of the redundancy version of the first decoding capability The data packet of the redundant version of the second decoding capability corresponding to the packet, the first decoding capability is higher than the second decoding capability; and the data packet of the redundant version of the second decoding capability is jointly encoded.
The first communication device according to any one of claims 34 to 44, wherein the joint encoding data packet includes M joint encoding data packets, where M is a positive integer, and M≥2; wherein, the joint encoding The spatial parameter of the data packet is determined by the processing module according to the sequence of resource positions corresponding to the M jointly encoded data packets on the first time-frequency resource.
The first communication device according to any one of claims 34-45, wherein the joint coding method comprises network coding and/or concatenated coding;

When the sum of the lengths of all the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode is concatenated coding;

Or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint encoding method is network encoding;

Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.
The first communication device according to any one of claims 34-46, wherein,

The transceiver module is further configured to send the joint encoding method to a second communication device, and the joint encoding method is used for the second communication device to decode the joint encoding data packet from the transceiver module .
The first communication device according to any one of claims 34 to 46, wherein the joint coding method comprises concatenated coding; wherein,

The concatenation sequence of the jointly encoded data packets is determined by the processing module according to the third indication information from the second communication device or the third communication device;

Alternatively, the concatenation sequence of the jointly encoded data packets is randomly determined by the processing module;

Alternatively, the concatenation sequence of the jointly encoded data packets is determined by the processing module according to a preconfigured sequence.
The first communication device according to claim 48, wherein,

The transceiver module is further configured to send the concatenated sequence of the jointly encoded data packets to the second communication device, where the concatenated sequence of the jointly encoded data packets is used by the second communication device to compare the data packets from the second communication device. The jointly encoded data packets of the transceiver modules are decoded.
The first communication apparatus according to any one of claims 34-49, wherein the processing module is further configured to determine the first time-frequency resource used for transmitting the joint coded data packet, comprising: converting the N The time-frequency resource configuration corresponding to each data packet is determined as the first time-frequency resource configuration.
The first communication device according to any one of claims 34-50, wherein the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.
The first communication device according to any one of claims 34 to 51, wherein when the joint encoding method includes network encoding, the number of the joint encoding data packets is greater than or equal to two, and the first When a time-frequency resource includes multiple resource configurations, the processing module is further configured to map the jointly encoded data packet to the multiple resource configurations respectively;

When the joint coding mode includes concatenated coding, the number of the joint coding data packets is greater than or equal to one, and the first time-frequency resource includes multiple resource configurations, the processing module is further configured to Each jointly encoded packet maps to multiple resource configurations.
A second communication device, characterized in that the second communication device comprises: a processing module and a transceiver module;

The processing module is configured to determine the first time-frequency resource used for transmitting the jointly coded data packet; wherein, the jointly coded data packet is obtained by jointly coding the N data packets used for repeated transmission by the first communication device , N is a positive integer, N≥2; wherein, each jointly encoded data packet is obtained by joint encoding of at least two data packets in the N data packets;

The transceiver module is configured to receive the jointly encoded data packet from the first communication device on the first time-frequency resource.
The second communication device according to claim 53, wherein,

The transceiver module is further configured to send first parameter information to the first communication device, where the first parameter information is used by the first communication device to determine a coding coefficient for jointly encoding the N data packets; Wherein, the first parameter information includes at least one of the following parameters:

The number of data packets participating in the joint encoding, the number of repeated transmissions of each data packet, the number of joint encoding data packets, or the size of the field corresponding to the encoding coefficient.
The second communication device according to claim 53 or 54, characterized in that:

The transceiver module is further configured to receive from the first communication device coding coefficients for jointly coding the N data packets, where the coding coefficients are used by the processing module to Jointly encoded data packets are decoded.
The second communication device according to any one of claims 53-55, characterized in that:

The transceiver module is further configured to send first indication information to the first communication apparatus, where the first indication information is used to indicate whether the first communication apparatus performs joint coding, and/or the first indication information The coding mode used to instruct the first communication apparatus to perform joint coding.
The second communication device according to any one of claims 53-56, characterized in that:

The transceiver module is further configured to send second indication information to the first communication device, where the second indication information is used to instruct the first communication device to stop sending the joint encoded data packet; or, the first communication device The second indication information is used to indicate that the transceiver module has correctly received the joint coding data packet; or, the second indication information is used to instruct the first communication apparatus to start new joint coding.
The second communication device according to any one of claims 53-57, characterized in that:

The transceiver module is further configured to receive the first communication device from the first communication device or the third communication device on the time-frequency resource corresponding to the N data packets before the common transmission end time of the N data packets. A data packet; the first data packet is at least one data packet in the N data packets.
The second communication device according to claim 58, wherein the redundant version of the first data packet and the redundant version of the data packet participating in the joint coding constitute complementary redundant versions.
The second communication apparatus according to claim 58 or 59, wherein the reference signal of the jointly coded data packet and the reference signal of the first data packet have a quasi-co-located QCL relationship.
The second communication device according to any one of claims 53-60, wherein the joint encoding data packet comprises M joint encoding data packets, where M is a positive integer, and M≥2; wherein, the joint encoding The spatial parameter of the data packet is determined by the first communication apparatus according to the sequence of resource positions corresponding to the M jointly encoded data packets on the first time-frequency resource.
The second communication device according to any one of claims 53-61, wherein the joint coding method comprises network coding and/or concatenated coding;

When the sum of the lengths of all the data packets in the N data packets is equal to or less than the preset threshold, the joint coding mode is concatenated coding;

Or, when the length of each data packet in the N data packets is greater than the preset threshold, the joint encoding method is network encoding;

Alternatively, when the sum of the lengths of all the data packets in the N data packets is greater than the preset threshold, and the length of the data packets in the N data packets is equal to or less than the preset threshold, the joint coding method includes network coding and concatenated coding.
The second communication device according to any one of claims 53-62, characterized in that:

The transceiver module is further configured to receive a joint encoding method from the first communication device, and the joint encoding method is used for the processing module to perform the joint encoding data packet from the first communication device. decoding.
The second communication device according to any one of claims 53-63, wherein the joint coding method comprises concatenated coding;

The transceiver module is further configured to send third indication information to the first communication apparatus, where the third indication information is used for the first communication apparatus to determine the concatenation sequence of the jointly encoded data packets.
The second communication device according to any one of claims 53-63, wherein the joint encoding method comprises concatenated encoding;

The transceiver module is further configured to receive the concatenation sequence of the jointly encoded data packets from the first communication device, and the concatenated sequence of the jointly encoded data packets is used by the processing module to perform a pairing of the jointly encoded data packets from the first communication device. The jointly encoded data packets of the communication device are decoded.
The second communication apparatus according to any one of claims 53-65, wherein the time-frequency resources and/or the first time-frequency resources corresponding to the N data packets are configuration authorized resources.
A communication device, characterized in that it includes:

a processor coupled with a memory for storing a program, the processor for executing the program stored in the memory; when the communication device operates, the processor executes the program such that the The communication device performs the method of any of the preceding claims 1-19 or 20-33.
The communication device of claim 67, wherein the communication device further comprises the memory.
The communication apparatus according to claim 67 or 68, characterized in that, the communication apparatus further comprises a communication interface, and the communication interface is used for the communication apparatus to communicate with other devices.
A computer-readable storage medium, characterized in that a computer program is stored thereon, and when the computer program is executed by a computer, the computer is made to execute the method according to any one of claims 1-19 or 20-33 .
A computer program product, comprising: instructions, when the computer program product runs on a computer, causing the computer to execute the method of any one of claims 1-19 or 20-33.
A communication system, characterized in that the communication system includes a first communication device and a second communication device;

the first communication device, configured to perform the method of any one of claims 1-19;

The second communication device is configured to perform the method of any one of claims 20-33.