CN110248412A

CN110248412A - Transmission method, equipment and the system of preemption information

Info

Publication number: CN110248412A
Application number: CN201810187541.8A
Authority: CN
Inventors: 鲁振伟; 刘德平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-03-07
Filing date: 2018-03-07
Publication date: 2019-09-17
Anticipated expiration: 2038-03-07
Also published as: CN110248412B; WO2019170084A1

Abstract

The embodiment of the present application provides transmission method, equipment and the system of preemption information, and the reliability of burst service data transmission can be improved.Method includes: the first resource that the first communication equipment determination to be occupied and the Secondary resource for sending preemption information, wherein, the preemption information is used to indicate the first resource and is occupied by first communication equipment, and the time-domain position of the Secondary resource is before the time-domain position of the first resource；First communication equipment sends the preemption information to the second communication equipment on the Secondary resource.

Description

Transmission method, equipment and system for preemption information

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a transmission method, device, and system for preemption information.

Background

With the development of mobile communication technology, the internet of vehicles uses technologies such as wireless communication and sensing detection to collect information of vehicles, roads, environments and the like, and an integrated network of intelligent traffic management control and vehicle intelligent control is realized through vehicle-to-vehicle communication (V2V), so that the market is explosively increased in recent years and has huge potential.

Among them, in the current third generation partnership project (3 GPP) release 14 (rel.14) V2X technology, two resource usage patterns are defined: one is mode (mode)3, the base station allocates resources on the sidelink for each terminal for the transmission of control information and data by the terminal; the other is mode 4, where the terminal determines an alternative resource set according to an existing listening (sending) procedure, and further randomly selects a resource from the alternative resource set for the terminal to transmit control information and data.

However, since the current fifth generation (5rd generation, 5G) V2X needs to support burst (burst) service, the characteristics of the burst service are: event triggering, the service is not necessarily strictly periodic, and the requirements on reliability, time delay and the like are high, so the resource usage mode corresponding to the existing mode 4 has the following problems:

on one hand, the existence of the burst service cannot be known in advance when the other terminals select the resources, so that the same resources may be selected as the terminals with the burst service, thereby reducing the reliability of data transmission of the burst service.

On the other hand, if the current resource pool is congested or the current resource selection window is congested, a sufficient number of alternative resources are selected to form an alternative resource set in the existing interception process by continuously increasing a Reference Signal Received Power (RSRP) threshold, so that more high-interference resources enter the alternative resource set, and further, if a resource is randomly selected from the alternative resource set to send burst service data, the reliability of burst service data transmission is further reduced.

Therefore, how to improve the reliability of burst service data transmission is an urgent problem to be solved at present.

Disclosure of Invention

The embodiment of the application provides a transmission method, equipment and a system for preemption information, which can improve the reliability of burst service data transmission.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, a method for sending preemption information is provided, and the method includes: the first communication equipment determines a first resource to be occupied and a second resource used for sending preemption information, wherein the preemption information is used for indicating that the first resource is occupied by the first communication equipment, and the time domain position of the second resource is before the time domain position of the first resource; the first communication device sends the preemption information to the second communication device on the second resource. Based on the sending method of the preemption information provided by the embodiment of the application, the first communication device can send the preemption information indicating that the first resource is occupied by the first communication device to the second communication device after determining the first resource to be occupied, so that the second communication device can know that the first resource is occupied by the first communication device and avoid the first resource, and therefore, when the first communication device has a burst service, the probability that the first communication device and the second communication device select the same resource can be reduced, and the reliability of burst service data transmission is improved.

In one possible design, the second resource is a resource in a dedicated set of resources for sending preemption information; the first communications device determining a second resource for transmitting preemption information, comprising: the first communication device determines the set of dedicated resources available for transmitting the preemption information based on a first parameter; the first communications device determines the second resource from the set of dedicated resources for transmitting the preemption information. Based on this scheme, the first communication device may determine a second resource for transmitting preemption information.

Optionally, the first parameter is a parameter in a resource configuration parameter, where the resource configuration parameter is a parameter configured by the network device or a parameter pre-configured on the first communication device.

In one possible design, the second resource is a resource of the reserved resources of the first communication device. Based on the scheme, because extra special resources for sending the preemption information are not needed, the resource waste is reduced, and the resource utilization rate is improved.

Optionally, the reserved resource is further configured to send sidelink control information SCI, where the SCI includes first indication information, and the first indication information is used to indicate that preemption information is sent in the reserved resource. Based on the scheme, the second communication device can know whether the reserved resource has preemption information transmission.

Optionally, the SCI further includes a resource configuration parameter, where the resource configuration parameter is used for the second communication device to receive the preemption information; wherein the resource configuration parameters include: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information. Based on this scheme, the second communication device may receive preemption information in accordance with resource configuration parameters.

In one possible design, the data on the reserved resource includes non-bursty traffic data and the data on the first resource includes bursty traffic data.

Alternatively, in one possible design, the data on the reserved resource and the data on the first resource both comprise bursty traffic data. Based on the scheme, the reserved resources can be utilized to transmit burst service data, so that the use of the resources is more flexible.

Further, in a possible design, the data on the first resource and the data on the reserved resource are data that are subjected to channel coding as a whole; correspondingly, the SCI or the preemption information further includes second indication information indicating that the data on the first resource and the data on the reserved resource are one transport block TB, or the second indication information indicates that the data on the first resource and the data on the reserved resource are jointly encoded, or the second indication information indicates that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side. Based on the scheme, the second communication equipment can acquire the coding mode of the channel, so that channel coding is correctly carried out.

In another possible design, the data on the first resource and the data on the reserved resource are separately channel-coded data; the SCI or preemption information further includes second indication information, the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independent TBs, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently encoded, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the second indication information is used to indicate that the receiving side receives in a normal manner. Based on the scheme, the second communication device can correctly perform channel coding according to the coding mode of the channel.

In one possible design, the second resource is a resource of the resources used to send the SCI. Based on the scheme, because extra special resources for sending the preemption information are not needed, the resource waste is reduced, and the resource utilization rate is improved.

Optionally, the preemption information includes second indication information, where the second indication information is used to indicate that the information is preemption information; alternatively, the preemption information is scrambled with a scrambling sequence different from the SCI. Based on this scheme, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.

In one possible design, the first communication device determining a first resource to be occupied includes: the first communication equipment determines a first resource to be occupied according to the received service priority indicated in the SCI sent by the other communication equipment and the resource indicated in the SCI sent by the other communication equipment. Based on the scheme, the first communication device may determine a first resource to be occupied.

In one possible design, before the first communication device determines the second resource for transmitting the preemption information, the method for transmitting the preemption information provided in the embodiment of the present application may further include: the first communication device determines permission to transmit preemption information based on the first parameter. That is, the first communication device determines the second resource for transmitting the preemption information, if allowed. Therefore, on one hand, the problem of burst service data transmission failure of the first communication equipment can be avoided, and the reliability of data transmission is improved; on the other hand, the interference of the data transmission of the first communication equipment to the data transmission of other communication equipment can be avoided, and the data transmission quality of other communication equipment is improved.

In a second aspect, there is provided a method of receiving preemption information, the method comprising: the second communication device receiving preemption information from the first communication device on a second resource, the preemption information for indicating that the first resource is occupied by the first communication device, wherein a time domain location of the second resource precedes a time domain location of the first resource; and the second communication equipment avoids the first resource according to the preemption information. Based on the receiving method of the preemption information provided by the embodiment of the application, the second communication device can receive the preemption information indicating that the first resource is occupied by the first communication device, so as to know that the first resource is occupied by the first communication device and avoid the first resource, therefore, when the first communication device has burst service, the probability that the first communication device and the second communication device select the same resource can be reduced, and the reliability of burst service data transmission can be improved.

In one possible design, the resource avoidance of the first resource by the second communication device according to the preemption information includes: under the condition that the second communication equipment is selecting resources, the second communication equipment determines that the first resources are overlapped with third resources in an alternative resource set of the second communication equipment according to the preemption information; the second communications device excludes the third resource from the set of alternative resources. Based on the scheme, under the condition that the second communication equipment is selecting resources, the resources of the first resources can be avoided, so that the probability that the first communication equipment and the second communication equipment select the same resources is reduced, and the reliability of burst service data transmission is improved.

In one possible design, the resource avoidance of the first resource by the second communication device according to the preemption information includes: under the condition that the second communication equipment selects the third resource, the second communication equipment determines that the third resource is overlapped with the first resource according to the preemption information; the second communications device stops transmitting data on the third resource. Based on the scheme, under the condition that the second communication equipment selects the third resource, the resource avoidance of the first resource can be realized, so that the probability that the first communication equipment and the second communication equipment select the same resource is reduced, and the reliability of burst service data transmission is further improved.

In one possible design, the method for receiving preemption information provided in the embodiment of the present application may further include: the second communication equipment determines that the number of times of continuous occupation of the resource occupied by the second communication equipment is greater than or equal to a preset threshold; the second communication device re-performs the resource selection. Based on the scheme, service interruption possibly caused by the fact that the second communication equipment waits for a long time can be avoided, and the reliability of data transmission of the second communication equipment is improved.

In one possible design, the second resource is a resource in a dedicated set of resources for sending preemption information; the method for receiving preemption information provided by the embodiment of the application may further include: the second communication device determines the dedicated resource set which can be used for receiving the preemption information according to the first parameter, wherein the dedicated resource set comprises the second resource; the second communication device detects the preemption information on resources in the set of dedicated resources. Based on this scheme, the second communication device may detect preemption information on the second resource and may receive preemption information from the first communication device on the second resource.

Optionally, the first parameter is a parameter in a resource configuration parameter, where the resource configuration parameter is a parameter configured by the network device or a parameter pre-configured on the second communication device.

Optionally, the reserved resource is further configured to send sidelink control information SCI, where the SCI includes first indication information; the method further comprises the following steps: and the second communication equipment determines that the reserved resource has preemption information transmission according to the first indication information. Based on the scheme, the second communication device can know whether the reserved resource has preemption information transmission.

Optionally, the SCI further includes a resource configuration parameter, where the resource configuration parameter includes: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information; the second communication device receiving preemption information from the first communication device on a second resource, comprising: the second communication device receives the preemption information from the first communication device on the second resource based on the resource configuration parameter. Based on this scheme, the second communication device may receive preemption information in accordance with resource configuration parameters.

Further, in a possible design, the data on the first resource and the data on the reserved resource are data that are subjected to channel coding as a whole; correspondingly, the SCI or the preemption information further includes second indication information, the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are a transport block TB, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are jointly encoded, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side; the method for receiving preemption information provided by the embodiment of the application may further include: and the second terminal jointly decodes the data on the first resource and the data on the reserved resource according to the second indication information. Based on the scheme, the second communication equipment can acquire the coding mode of the channel, so that the channel coding can be correctly carried out.

In another possible design, the data on the first resource and the data on the reserved resource are separately channel-coded data; the SCI or the preemption information further includes second indication information, the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independent TBs, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently encoded, or the second indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the second indication information is used to indicate that the receiving side receives in a normal manner; the method for receiving preemption information provided by the embodiment of the application may further include: and the second terminal separately decodes the data on the first resource and the data on the reserved resource according to the second indication information. Based on the scheme, the second communication equipment can acquire the coding mode of the channel, so that the channel coding can be correctly carried out.

Optionally, the preemption information includes second indication information; the method for receiving preemption information provided by the embodiment of the application may further include: and the second communication equipment determines the information on the second resource as the preemption information according to the second indication information. Based on this scheme, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.

Or, optionally, the preemption information is scrambled by a scrambling sequence different from the SCI; the method for receiving preemption information provided by the embodiment of the application may further include: and the second communication equipment determines the information on the second resource as the preemption information according to the scrambling sequence of the information on the second resource. Based on this scheme, the second communication device can correctly distinguish whether the information on the second resource is SCI or preemption information.

In one possible design, before the second communication device receives the preemption information from the first communication device on the second resource, the method for receiving preemption information provided in the embodiment of the present application may further include: the second communication device determines permission to receive the preemption information based on the first parameter. That is, the second communication device receives preemption information from the first communication device on the second resource, if allowed. Therefore, on one hand, the problem of burst service data transmission failure of the first communication equipment can be avoided, and the reliability of data transmission is improved; on the other hand, the interference of the data transmission of the first communication equipment to the data transmission of other communication equipment can be avoided, and the data transmission quality of other communication equipment is improved.

With reference to the first aspect or the second aspect, in a possible design, the preemption information includes at least one of time-domain position information of the first resource, frequency-domain position information of the first resource, priority of data on the first resource, MCS of data on the first resource, a period of the first resource, or a number of times of expected occupancy.

In a third aspect, a first communication device is provided, which has the function of implementing the method of any one of the above first aspects. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, there is provided a first communication device comprising: a processor and a memory; the memory is configured to store computer executable instructions, and when the first communication device is running, the processor executes the computer executable instructions stored in the memory to cause the first communication device to perform the method of transmitting preemption information as described in any of the above first aspects.

In a fifth aspect, a first communication device is provided, comprising: a processor; the processor is configured to be coupled to the memory, and after reading the instruction in the memory, execute the method for sending the preemption information according to the instruction in the first aspect.

A sixth aspect provides a computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of transmitting preemption information as described in any of the above first aspects.

In a seventh aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of transmitting preemption information of any of the above first aspects.

In an eighth aspect, a chip system is provided, which comprises a processor configured to enable a first communication device to implement the functions referred to in the above aspects, such as determining a first resource to be occupied and a second resource for transmitting preemption information. In one possible design, the system-on-chip further includes a memory for storing necessary program instructions and data for the first communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any one of the design manners in the third aspect to the eighth aspect, reference may be made to technical effects brought by different design manners in the first aspect, and details are not described here.

In a ninth aspect, there is provided a second communication device having the functionality of implementing the method of any of the second aspects above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a tenth aspect, there is provided a second communication device comprising: a processor and a memory; the memory is configured to store computer executable instructions, and when the second communication device is running, the processor executes the computer executable instructions stored in the memory to cause the second communication device to perform the method of preempting information according to any one of the above second aspects.

In an eleventh aspect, there is provided a second communication device comprising: a processor; the processor is configured to be coupled to the memory, and to execute the method for receiving preemption information according to any of the second aspect above after reading the instructions in the memory.

In a twelfth aspect, there is provided a computer-readable storage medium having stored therein instructions, which when run on a computer, make the computer perform the method of preempting information according to any one of the second aspects above.

In a thirteenth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of preempting information according to any of the second aspects above.

In a fourteenth aspect, a chip system is provided, which includes a processor for enabling a second communication device to implement the functions referred to in the above aspects, such as resource avoidance on a first resource according to preemption information. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the second communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

The technical effects brought by any one of the design manners in the ninth aspect to the fourteenth aspect can be referred to the technical effects brought by different design manners in the second aspect, and are not described herein again.

In a fifteenth aspect, there is provided a transmission system of preemption information comprising a first communication device as defined in any above and at least one second communication device as defined in any above.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

Drawings

Fig. 1 is a first schematic view of a resource configuration provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a resource configuration according to an embodiment of the present application;

fig. 3 is a schematic PRB diagram provided in the embodiment of the present application;

fig. 4 is a schematic architecture diagram of a transmission system for preemption information according to an embodiment of the present application;

fig. 5 is a schematic hardware structure diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic flow chart of a transmission method of preemption information according to an embodiment of the present application;

fig. 7 is a schematic diagram of a selection of a first resource according to an embodiment of the present application;

fig. 8 is a first schematic view of resource distribution provided in the embodiment of the present application;

fig. 9 is a schematic view of resource distribution according to an embodiment of the present application;

fig. 10 is a schematic view of resource distribution according to an embodiment of the present application;

fig. 11 is a fourth schematic view of resource distribution provided in the embodiment of the present application;

fig. 12 is a schematic diagram of resource distribution according to an embodiment of the present application;

fig. 13 is a sixth schematic view of resource distribution provided in the embodiment of the present application;

fig. 14 is a seventh schematic view of resource distribution provided in the embodiment of the present application;

fig. 15 is a schematic view eight of resource distribution provided in the embodiment of the present application;

fig. 16 is a schematic view nine of resource distribution provided in the embodiment of the present application;

fig. 17 is a schematic view ten of resource distribution provided in the embodiment of the present application;

fig. 18 is an eleventh schematic view of resource distribution provided in the embodiment of the present application;

fig. 19 is a twelfth schematic view of resource distribution provided in the embodiment of the present application;

fig. 20 is a schematic diagram thirteen illustrating resource distribution provided in the embodiment of the present application;

fig. 21 is a schematic view fourteen of resource distribution provided in the embodiment of the present application;

fig. 22 is a fifteen schematic resource distribution diagram provided by the embodiment of the present application;

fig. 23 is a schematic view sixteen illustrating resource distribution according to an embodiment of the present application;

fig. 24 is a schematic view seventeenth of resource distribution provided in the embodiment of the present application;

fig. 25 is an eighteen schematic resource distribution diagrams provided in the embodiment of the present application;

fig. 26 is a nineteen schematic view of resource distribution provided in the embodiment of the present application;

fig. 27 is a schematic view twenty of resource distribution provided by the embodiment of the present application;

fig. 28 is a schematic view twenty-one of resource distribution provided in the embodiment of the present application;

fig. 29 is a twenty-two schematic view of resource distribution provided in the embodiment of the present application;

fig. 30 is a schematic twenty-three of a resource distribution provided by an embodiment of the present application;

fig. 31 is a schematic twenty-four of a resource distribution provided in the present embodiment;

fig. 32 is a schematic diagram of resource distribution twenty-five according to an embodiment of the present application;

FIG. 33 is a first diagram illustrating resource avoidance provided in accordance with an embodiment of the present application;

FIG. 34 is a schematic view of resource avoidance provided in the embodiments of the present application;

fig. 35 is a schematic view of resource avoidance provided in the present embodiment;

fig. 36 is a schematic structural diagram of a first communication device according to an embodiment of the present application;

fig. 37 is a schematic structural diagram of a second communication device according to an embodiment of the present application.

Detailed Description

First, the related art and related terms referred to in this application are briefly introduced to facilitate the reader's understanding:

resource: the resources in the embodiments of the present application may also be referred to as time-frequency resources, that is, time-domain resources and frequency-domain resources are included. Currently, the minimum unit of time domain resources is a symbol; the smallest unit of frequency domain resources is a subcarrier.

In a current Long Term Evolution (LTE) system, a radio frame is defined to include 10 subframes (subframes), each subframe has a length of 1 millisecond (ms), each subframe includes two slots (slots), and each slot is 0.5 ms. The number of symbols included in each slot is related to the length of the Cyclic Prefix (CP) in the subframe. If the CP is a normal (normal) CP, each slot includes 7 symbols and each subframe consists of 14 symbols, e.g., as shown in fig. 1, each subframe may consist of symbols with sequence numbers #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, respectively. If the CP is a long (extended) CP, each slot includes 6 OFDM symbols and each subframe consists of 12 symbols, for example, as shown in fig. 2, each subframe may consist of symbols with sequence numbers #0, #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, # 11. In addition, the size of one Physical Resource Block (PRB) is defined as one slot in the time domain and 180kHz in the frequency domain. When the subcarrier spacing is 15kHz, as shown in fig. 1 or fig. 2, one PRB includes 12 subcarriers in the frequency domain, and in this case, one PRB includes 84 or 72 Resource Elements (REs), and the REs may be uniquely identified by an index pair (k, l), where k is a subcarrier index and l is a symbol index. Meanwhile, PRB is numbered in the frequency domain, namely PRB index or PRB sequence number. One PRB pair (PRB pair) is defined as a pair of PRBs with the same PRB index or PRB number for two slots on one subframe.

In the current 5G system, a radio frame is defined to include 10 subframes, each subframe has a length of 1 millisecond (ms), and each subframe includes one or more slots (slots). In addition, a Physical Resource Block (PRB) is defined to include 12 subcarriers in the frequency domain, and the PRB is numbered in the frequency domain, that is, the PRB index or the PRB sequence number is obtained.

In the embodiment of the present application, since the PRB number is a number of a PRB in the frequency domain and includes 12 subcarriers in the frequency domain, the PRB number in the drawings of the embodiment of the present application does not represent one coordinate value in the coordinate system, but only schematically represents the frequency domain range of one PRB. For example, in fig. 3, one PRB with PRB number q represents a segment of frequency domain range between the dashed line 1 and the dashed line 2, which is described in a unified manner herein and is not described in detail below.

Preemption information: the preemption information in the embodiments of the present application is used to indicate that the first resource is occupied by the first communication device.

The preemption information may include at least one of time domain position information of the first resource, frequency domain position information of the first resource, priority of data on the first resource, Modulation and Coding Scheme (MCS) of the data on the first resource, a period of the first resource, or a predicted number of times of occupation, for example.

In this embodiment of the present application, the time domain location information of the first resource may include, for example, a time interval between the first resource and a second resource used for sending the preemption information, and a time domain size of the first resource; or, optionally, the time domain position information of the first resource may include, for example, a time domain starting position of the first resource and a time domain ending position of the first resource; alternatively, optionally, in order to reduce the time delay, if the second resource used for sending the preemption information and the first resource to be occupied by the first communication device are configured in advance to occupy consecutive time domain resources, it may not be necessary to indicate a time interval between the first resource and the second resource used for sending the preemption information or a time domain starting position of the first resource in the time domain position information of the first resource, which is described in a unified manner herein and is not described in detail below.

In this embodiment of the present application, the frequency domain position information of the first resource may include, for example, a frequency domain starting position of the first resource and a frequency domain ending position of the first resource; alternatively, the frequency domain location information of the first resource may include, for example, a frequency domain start location of the first resource and a frequency domain size of the first resource. The frequency domain starting position of the first resource is represented by a frequency domain starting PRB serial number of the first resource, the frequency domain ending position of the first resource is represented by a frequency domain ending PRB serial number of the first resource, and the frequency domain size of the first resource is generally represented by the number of PRB serial numbers corresponding to the first resource or the number of subcarriers corresponding to the first resource.

Optionally, in this embodiment of the present application, a time domain of the first resource may also be referred to as a time domain resource corresponding to the first resource, and a frequency domain of the first resource may also be referred to as a frequency domain resource corresponding to the first resource, which is not specifically limited in this embodiment of the present application.

Time division: the time division in the embodiment of the present application refers to the same frequency domain resource and different time domain resources.

Frequency division: the frequency division in the embodiment of the present application means that time domain resources may be the same or different on different frequency domain resources.

Sidelink control information (sidelink control information): the SCI in the embodiment of the present application refers to control information sent from a sending end, and is used to indicate information such as resources occupied by data transmission, MCS, or service priority, and a receiving end can receive data according to the indication of the SCI. Optionally, SCI in the embodiment of the present application may also be referred to as Scheduling Assignment (SA), which is described herein in a unified manner and will not be described again below.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Where in the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

In addition, the network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

As shown in fig. 4, a transmission system 40 of preemption information is provided for the embodiment of the present application, and the transmission system 40 of preemption information includes a first communication device 401 and one or more second communication devices 402 that communicate with the first communication device 401. The following description will be given taking as an example communication between the first communication device 401 and any of the second communication devices 402.

The first communication device 401 is configured to determine a first resource to be occupied and a second resource for transmitting preemption information, and transmit preemption information on the second resource to the second communication device 402. Wherein the preemption information is used to indicate that the first resource is occupied by the first communication device and the time domain location of the second resource is before the time domain location of the first resource;

the second communication device 402 is configured to receive preemption information from the first communication device 401 on the second resource, and perform resource avoidance on the first resource according to the preemption information.

In this embodiment of the present application, reference may be made to the description of the resource in the preamble of the specific embodiment for the related description of the first resource and the second resource, and reference may be made to the preamble of the specific embodiment for the related description of the preemption information, which is not described herein again.

Although not shown, the transmission system 40 of the preemption information may further include a network device, and the network device is configured to configure information required for resource pool configuration, such as resource configuration parameters and the like in the following embodiments, which are not specifically limited in this embodiment of the present application. Optionally, the network device in this embodiment of the present application may include, for example, a base station, a relay station, or an access point, which is not specifically limited in this embodiment of the present application. The base station in the embodiment of the present invention may be, for example, a Base Transceiver Station (BTS) in a global system for mobile communication (GSM) or Code Division Multiple Access (CDMA) network, an nb (nodeb) in a Wideband Code Division Multiple Access (WCDMA), an enodeb (evolved nodeb) in LTE, or a base station in 5G or other future networks, and the present invention is not limited thereto.

Optionally, the communication device (including the first communication device 401, the second communication device 402, and a third communication device described below) referred to in this embodiment of the present application may include, for example, a terminal (terminal) or a chip or a circuit in the terminal, and this is not particularly limited in this embodiment of the present application. The terminal in the embodiment of the present application may include, for example, various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, which have a wireless communication function; a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (dhhand), a laptop computer (laptop), a cordless phone (cordless phone) or a Wireless Local Loop (WLL) station, a Machine Type Communication (MTC) terminal, a User Equipment (UE), a Mobile Station (MS), a terminal equipment (terminal device) or a relay user equipment, etc. may also be included. The relay user equipment may be, for example, a 5G home gateway (RG). For convenience of description, the above-mentioned devices are collectively referred to as a terminal in this application.

According to the transmission system of the preemption information provided by the embodiment of the application, the first communication device can send the preemption information indicating that the first resource is occupied by the first communication device to the second communication device after determining the first resource to be occupied, so that the second communication device can know that the first resource is occupied by the first communication device and avoid the first resource, and therefore, when the first communication device has burst service, the probability that the first communication device and the second communication device select the same resource is reduced, and the reliability of burst service data transmission is improved.

Optionally, in this application embodiment, the first communication device or the second communication device in fig. 4 may be implemented by one device, or may be implemented by multiple devices together, or may be one functional module in one device, which is not specifically limited in this application embodiment. It is understood that the above functions may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).

For example, the first communication device or the second communication device in fig. 4 in the embodiment of the present application may be implemented by the communication device in fig. 5. Fig. 5 is a schematic diagram illustrating a hardware structure of a communication device according to an embodiment of the present application. The communication device 500 includes at least one processor 501, communication lines 502, memory 503, and at least one communication interface 504.

The processor 501 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure.

The communication link 502 may include a path for transmitting information between the aforementioned components.

The communication interface 504 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 503 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via a communication line 502. The memory may also be integral to the processor.

The memory 503 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 501 to execute. The processor 501 is configured to execute computer-executable instructions stored in the memory 503, so as to implement the transmission method of the preemption information provided by the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 501 may include one or more CPUs such as CPU0 and CPU1 in fig. 5 as an example.

In particular implementations, communication device 500 may include multiple processors, such as processor 501 and processor 508 in fig. 5, for example, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, communication device 500 may also include an output device 505 and an input device 506, as one embodiment. An output device 505, which is in communication with the processor 501, may display information in a variety of ways. For example, the output device 505 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 506 is in communication with the processor 501 and may receive user input in a variety of ways. For example, the input device 506 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The communication device 500 may be a general purpose device or a special purpose device. In a specific implementation, the communication device 500 may be a desktop, a laptop, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet, a wireless terminal device, an embedded device, or a device with a similar structure as in fig. 5. The embodiment of the present application does not limit the type of the communication device 500.

The following describes a transmission method of preemption information provided by the embodiment of the present application in detail with reference to fig. 1 to 5.

With reference to the transmission system of preemption information shown in fig. 4, taking the communication between a first communication device and any one of second communication devices as an example, as shown in fig. 6, a transmission method of preemption information provided by the embodiment of the present application includes the following steps:

s601, the first communication device determines a first resource to be occupied.

S602, the first communication device determines a second resource for transmitting the preemption information, wherein a time domain position of the second resource is before a time domain position of the first resource.

S603, the first communication device sends the preemption information to the second communication device on the second resource.

S604, the second communication device receives the preemption information from the first communication device on the second resource.

And S605, the second communication equipment avoids the first resource according to the preemption information.

The following description will be made separately for each step development.

In step S601 in the embodiment of the present application:

the first communication device may determine the first resource to occupy in the following manner.

The first method is as follows: the first communication equipment determines a first resource to be occupied according to the received service priority indicated in the SCI sent by the other terminal and the resource indicated in the SCI sent by the other terminal.

In a possible implementation manner, the first communication device may compare the received service priority indicated in the SCI sent by the other communication device with the service priority of the first terminal itself, and select the first resource to be occupied from the alternative resource set after excluding the resource indicated in the SCI sent by the communication device whose service priority is higher than or equal to the service priority of the first communication device from the alternative resource set.

For example, it is assumed that the first communication device receives SCIs sent by the fourth communication device and the fifth communication device, a service priority indicated in the SCI sent by the fourth communication device is a, a service priority indicated in the SCI sent by the fifth communication device is B, and a service priority of the first communication device itself is C, and if the priority level is a > C > B, that is, the service priority of the first communication device is lower than the service priority of the fourth communication device, and the service priority of the first communication device is higher than the service priority of the fifth communication device, the first communication device excludes resources indicated in the SCI sent by the fourth communication device from the candidate resource set, and then selects a first resource to be occupied from the candidate resource set. For example, if the candidate resource set includes a resource indicated in the SCI sent by the fifth communication device, the first communication device may determine that the first resource is the resource indicated in the SCI sent by the fifth communication device.

In another possible implementation manner, the first communication device may compare the received service priority indicated in the SCI sent by the other terminal with a preset service priority, and select the first resource to be occupied from the alternative resource set after excluding the resource indicated in the SCI sent by the communication device whose service priority is higher than or equal to the preset service priority from the alternative resource set.

For example, assuming that the first communication device receives SCIs sent by the fourth communication device and the fifth communication device, a service priority indicated in the SCI sent by the fourth communication device is a, a service priority indicated in the SCI sent by the fifth communication device is B, and a preset service priority is C, if the priority level is a > C > B, that is, the preset service priority is lower than the service priority of the fourth communication device, and the preset service priority is higher than the service priority of the fifth communication device, the first communication device excludes the resource indicated in the SCI sent by the fourth communication device from the set of alternative resources, and then selects the first resource to be occupied from the combination of the alternative resources. For example, if the candidate resource set includes a resource indicated in the SCI sent by the fifth communication device, the first communication device may determine that the first resource is the resource indicated in the SCI sent by the fifth communication device.

Optionally, if the service priority indicated in the SCIs sent by the multiple communication devices is lower than the preset service priority, the first communication device may randomly select one resource from the resources indicated in the SCIs sent by the multiple communication devices as the first resource, which is not specifically limited in this embodiment of the present application.

The second method comprises the following steps: the first resource may be a resource occupied by the third communication device or a part of the resource occupied by the third communication device. That is, the first communication device tries to occupy the resources of one other communication device to minimize the amount of data of the affected communication device.

Illustratively, as shown in fig. 7, when the first communication device has three alternative resources (two solid-line frame resources and one dashed-line frame resource), the first communication device preferentially selects the solid-line frame resource and avoids selecting the dashed-line frame resource as much as possible. The reason is that: if the solid-line-frame resource is selected, only one other communication device (e.g., the fourth communication device or the fifth communication device) is affected, and when the dotted-line-frame resource is selected, more other communication devices (e.g., the fourth communication device and the fifth communication device) are affected.

It should be noted that, the above is only an exemplary manner for providing two ways for the first communication device to determine the first resource to be occupied, and of course, the first communication device may also determine the first resource to be occupied by other ways, for example, randomly select the first resource from the alternative resource set, or consider both the first way and the second way when the first communication device determines the first resource to be occupied, which is not specifically limited in this embodiment of the present application.

In step S602 in the embodiment of the present application:

the first communication device may determine the second resource for transmitting the preemption information as follows.

The first method is as follows: the second resource is a resource in a set of dedicated resources for transmitting preemption information.

That is, a resource set may be configured in advance, and resources in the resource set are only used for transmitting the preemption information and cannot be used for transmitting other information than the preemption information. In this scenario, the first communication device may first determine, according to the first parameter, a dedicated resource set that can be used for sending the preemption information, and then determine, from the dedicated resource set, a second resource that is used for sending the preemption information. For example, a resource is randomly selected from the dedicated resource set as the second resource, or the second resource is further determined according to the second parameter, which is not specifically limited in this embodiment of the present application. Wherein the first parameter or the second parameter may be a parameter in the resource configuration parameters. The resource configuration parameter in this embodiment may be a parameter configured by the network device or a parameter pre-configured on the first communication device, and this is not specifically limited in this embodiment.

Optionally, the first parameter or the second parameter in this embodiment may include, for example, at least one of time domain location information or frequency domain location information of a dedicated resource set used for sending the preemption information.

For example, as shown in fig. 8, when the first resource and the second resource are frequency-shared, the first parameter in the embodiment of the present application may include, for example, frequency domain location information of a dedicated resource set (i.e., resource set 2 in fig. 8) used for sending the preemption information; optionally, the first parameter may further include time domain location information of a dedicated resource set used for sending the preemption information, which is not specifically limited in this embodiment of the present application. Here, the resource set 1 in fig. 8 is a set of resources for transmitting information other than the preemption information, and includes the first resource described above.

Optionally, the first resource set and the second resource set in this embodiment may be sets of resources that are continuous in the frequency domain, or may also be sets of resources that are discontinuous in the frequency domain, and fig. 8 is only an example that the first resource set and the second resource set are sets of resources that are discontinuous in the frequency domain, which is not specifically limited in this embodiment of the present application. Furthermore, in the case where the first set of resources and the second set of resources are sets of resources that are discontinuous in the frequency domain, the first set of resources and the second set of resources typically belong to different resource pools; when the first resource set and the second resource set are sets of resources that are continuous in the frequency domain, the first resource set and the second resource set may belong to the same resource pool or may belong to different resource pools.

Alternatively, for example, as shown in fig. 9, when the first resource and the second resource are time-shared, the first parameter in this embodiment may include a dedicated resource set for transmitting the preemption information, such as the last two symbols of each scheduling time unit (hereinafter referred to as time unit); optionally, the first parameter may further include frequency domain location information of a dedicated resource set used for sending the preemption information, which is not specifically limited in this embodiment of the present application.

It should be noted that, for example, the time unit in the embodiment of the present application may be a subframe in an LTE system or a timeslot in a 5G system, which is not specifically limited in the embodiment of the present application.

The second method comprises the following steps: the second resource is a resource of the reserved resources with the first communication device.

That is to say, in this embodiment of the present application, if the first communication device happens to have the reserved resource, the first communication device may send the preemption information by using the reserved resource, which is not specifically limited in this embodiment of the present application. The reserved resource refers to a reserved resource having periodicity in time, and is generally used for sending periodic data, and the embodiment of the present application is described in terms of 1 time unit of the reserved resource in a time domain, which is described in a unified manner herein and will not be described in detail below.

Optionally, the reserved resource in the embodiment of the present application may also be used to send the SCI and data corresponding to the SCI. That is, the preemption information in the present embodiment may be sent with the SCI or data corresponding to the SCI.

For example, when the resource in the resource pool can be divided frequently, the schematic diagram of sending the preemption information along with the SCI or the data corresponding to the SCI may be as shown in fig. 10 to fig. 13. In fig. 10 and 11, the resource for transmitting data and the resource for transmitting SCI belong to the same resource pool; in fig. 12 and 13, the resources for transmitting data and the resources for transmitting SCIs belong to different resource pools, for example, an SCI resource pool is used for transmitting SCIs; the data resource pool is used for transmitting data. Wherein, in fig. 10, the resource for transmitting the preemption information and the resource for transmitting the SCI are time-divided; in fig. 11, the resources for transmitting the preemption information and the resources for transmitting the SCI are frequency-divided; in fig. 12, the preemption information is sent with the SCI, and the resources used to send the preemption information and the resources used to send the SCI are frequency divided; in fig. 13, the preemption information is sent with the data corresponding to the SCI, and the resources used to send the preemption information and the resources used to send the data corresponding to the SCI are frequency divided.

It should be noted that fig. 10 to fig. 13 are merely exemplary to illustrate that the preemption information may be sent with the SCI or the data corresponding to the SCI, and of course, the schematic diagram of sending the preemption information with the SCI or the data corresponding to the SCI may also be other, for example, in fig. 12, the resource for sending the preemption information and the resource for sending the SCI may also be time-divided; in fig. 13, the resource for transmitting the preemption information and the resource for transmitting the data corresponding to the SCI may also be time-division, which is not specifically limited in the embodiment of the present application.

Alternatively, for example, when the resource in the resource pool can be time-shared, the schematic diagram of sending the preemption information along with the SCI or the data corresponding to the SCI may be as shown in fig. 14 to 17. In fig. 14 and 15, the resource for transmitting data and the resource for transmitting SCI belong to the same resource pool; in fig. 16 and 17, the resource for transmitting data and the resource for transmitting SCI belong to different resource pools, for example, an SCI resource pool is used for transmitting SCI; the data resource pool is used for transmitting data. Wherein, in fig. 14, the resource for transmitting the preemption information and the resource for transmitting the SCI are time-divided; in fig. 15, the resources for transmitting the preemption information and the resources for transmitting the SCI are frequency-divided; in fig. 16, the preemption information is sent with the SCI, and the resources used to send the preemption information and the resources used to send the SCI are frequency divided; in fig. 17, the preemption information is sent with the data corresponding to the SCI, and the resources used to send the preemption information and the resources used to send the data corresponding to the SCI are frequency divided.

It should be noted that fig. 14 to fig. 17 are merely exemplary to illustrate that the preemption information may be sent with the SCI or the data corresponding to the SCI, and of course, the schematic diagram of sending the preemption information with the SCI or the data corresponding to the SCI may also be other, for example, in fig. 16, the resource for sending the preemption information and the resource for sending the SCI may also be time-divided; in fig. 17, the resource for transmitting the preemption information and the resource for transmitting the data corresponding to the SCI may also be time-division, which is not specifically limited in the embodiment of the present application.

It should be noted that, in fig. 10 to fig. 17, when the preemption information is sent along with the SCI, the resource for sending the preemption information and the resource for sending the SCI may be one resource or two independent resources, that is, the second resource in the embodiment of the present application may be only used for sending the preemption information, or the second resource in the embodiment of the present application may also send the SCI in addition to sending the preemption information, which is not specifically limited in this embodiment of the present application.

Optionally, in this embodiment of the present application, the first communication device may determine, according to a resource configuration parameter, a second resource used for sending the preemption information, where the resource configuration parameter may include, for example: at least one of time domain location information of the second resource, frequency domain location information of the second resource, or an MCS of the preemption information. In addition, the resource configuration parameter may be a parameter configured by the network device or a parameter pre-configured on the first communication device, and the like, which is not specifically limited in this embodiment of the application.

In a possible implementation manner, the resource configuration parameter is non-fixed, and in this case, correspondingly, the SCI may further include the resource configuration parameter, where the resource configuration parameter is used for the second communication device to receive the preemption information.

In another possible implementation, the resource configuration parameter is fixed, and at this time, the location of the time-frequency resource used for sending the preemption information is fixed. For example, in fig. 10 or fig. 14, the third symbol is used to transmit preemption information; alternatively, in fig. 11 or fig. 15, resources with PRB number 3 and 4 are used for transmitting preemption information, and so on. Of course, when the resource configuration parameter is fixed, the MCS is also fixed, for example, the MCS is Quadrature Phase Shift Keying (QPSK), which is not specifically limited in this embodiment of the present invention.

In another possible implementation manner, the third parameter in the resource configuration parameters is fixed, and the fourth parameter is non-fixed, at this time, correspondingly, the SCI may further include the fourth parameter, and the fourth parameter is used for the second communication device to receive the preemption information, which is not specifically limited in this embodiment of the present application.

Optionally, for the second method, when the resource configuration parameter is fixed, since the resource configuration parameter may also be configured in advance on the second communication device, the resource configuration parameter may not be carried in the SCI, which is described in a unified manner herein and will not be described again.

Optionally, as for the second mode, the SCI may further include first indication information, where the first indication information is used to indicate that preemption information is sent on the reserved resources. For example, 1 bit is used, and a value of 1 indicates that preemption information is transmitted on the reserved resources, and a value of 0 indicates that no preemption information is transmitted on the reserved resources. If the resource configuration parameter is not fixed, the SCI may further include the resource configuration parameter, so that it is ensured that the second communication device knows that the resource configuration parameter is the resource configuration parameter for sending the preemption information in time, and the second communication device may receive the preemption information according to the resource configuration parameter.

Further, for the second method, there may be different implementations of the data part transmission in the reserved resource, and the following exemplary descriptions are provided below.

In one possible implementation, the data on the reserved resource includes non-burst traffic data, and the data on the first resource includes burst traffic data. For example, taking a case that resources in the resource pool can be time-divided as an example, the data on the reserved resources in fig. 14 to 17 may be non-burst traffic data, and the data on the first resource may include burst traffic data, and the results are shown in fig. 18 to 21, respectively.

In another possible implementation, the data on the reserved resource and the data on the first resource both include burst traffic data. For example, taking a case that resources in the resource pool can be time-divided as an example, the data on the reserved resources in fig. 14 to 17 may be burst traffic data, and the data on the first resource may include burst traffic data, and the results are shown in fig. 22 to 25, respectively. The situation is generally applicable to, for example, a scenario where periodic non-burst service data has already been sent, and there is a reserved resource at this time, but there is no periodic non-burst service data to be sent, or a scenario where non-burst service data is large, and the like, and this is not particularly limited in this embodiment of the present application.

Further, in this embodiment of the application, the data on the first resource and the data on the reserved resource may be data that is subjected to channel coding as a whole, or may also be data that is subjected to channel coding separately, which is not specifically limited in this embodiment of the application.

If the data on the first resource and the data on the reserved resource may be data that is channel-coded as a whole, the SCI or the preemption information may further include third indication information, where the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are one Transport Block (TB), or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are jointly coded, or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side.

Or, if the data on the first resource and the data on the reserved resource may be separately channel-coded data, the SCI or the preemption information further includes third indication information, where the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are independent TBs, or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource are independently coded, or the third indication information is used to indicate that the data on the first resource and the data on the reserved resource need to be separately decoded on the receiving side, or the third indication information is used to indicate that the receiving side receives the data in a normal manner.

For example, a bit is added to the SCI or the preemption information to indicate that, if 1, the data on the first resource and the data on the reserved resource are a TB, or the data on the first resource and the data on the reserved resource are jointly encoded, or the data on the first resource and the data on the reserved resource need to be jointly decoded on the receiving side; and when the value is 0, indicating that the data on the first resource and the data on the reserved resource are independent TBs, or indicating that the data on the first resource and the data on the reserved resource are independently encoded, or indicating that the data on the first resource and the data on the reserved resource need to be separately decoded at a receiving side, or indicating that the receiving side receives the data in a normal manner.

Of course, in this embodiment of the present application, if the data on the first resource and the data on the reserved resource are data that are separately channel-coded, that is, the data are separately transmitted as two TBs in two time units, no additional indication may be needed in the SCI or the preemption information, and the receiving-side communication device may separately receive and decode the data according to two independent TBs in the two time units, which is not specifically limited in this embodiment of the present application.

Optionally, in this embodiment of the present application, when the first communication device happens to have reserved resources and the reserved resources may contain burst service data, as shown in fig. 26 to fig. 31, the reserved resources may also be directly used to transmit the burst service data without performing additional resource preemption, so that the transmission delay of the burst service data may be further reduced, which is not specifically limited in this embodiment of the present application.

In fig. 26, 27, 29 and 30, the resource for transmitting data and the resource for transmitting SCI belong to the same resource pool; in fig. 28 and fig. 31, the resource for transmitting data and the resource for transmitting SCI belong to different resource pools, for example, an SCI resource pool is used for transmitting SCI; the data resource pool is used for transmitting data. Wherein, in fig. 26 and 27, resources in the resource pool are frequency-divided, while in fig. 26, resources for transmitting burst traffic data and resources for transmitting SCI are time-divided, and in fig. 27, resources for transmitting burst traffic data and resources for transmitting SCI are frequency-divided; in fig. 29 and 30, resources in the resource pool are time-divided, while in fig. 29, resources for transmitting burst traffic data and resources for transmitting SCI are time-divided, and in fig. 30, resources for transmitting burst traffic data and resources for transmitting SCI are frequency-divided.

The above two methods have the advantages over the first method that: on one hand, in the second mode, extra special resources for sending the preemption information are not needed, so that the resource waste is reduced, and the resource utilization rate is improved; on the other hand, the reserved resources can be utilized to transmit burst service data, so that the use of the resources is more flexible.

The third method comprises the following steps: the second resource is a resource among resources for transmitting the SCI.

That is, in the embodiment of the present application, the first communication device may transmit the preemption information using the resource that transmits the SCI. For example, in fig. 32, the SCI resource pool is used to send SCIs, and the first communication device may also send preemption information in the SCI resource pool. Because extra special resources for sending the preemption information are not needed, the resource waste is reduced, and the resource utilization rate is improved.

It should be noted that fig. 32 illustrates an example in which the resource for transmitting the SCI and the resource for transmitting the preemption information are frequency-divided, but it is needless to say that the resource for transmitting the SCI and the resource for transmitting the preemption information may also be time-divided, and this embodiment of the present application is not particularly limited to this.

For the third mode, since the SCI resource pool can be used for sending SCI and preemption information, SCI and preemption information need to be distinguished.

In one possible implementation, a field is added to the preemption information or SCI to distinguish between the two, such as 1 bit, where a 0 indicates that the information is SCI, and a 1 indicates that the information is preemption information.

Or, another possibility is that the two use different scrambling sequences, e.g. with different scrambling sequencesE.g. initializing the ID (c) with a different sequence_init) The sequence ID1 indicates that the information is SCI, and the sequence ID2 indicates that the information is preemption information.

As for any one of the first to third manners, optionally, the resource configuration parameter in this embodiment may further include a parameter, which is used to characterize whether to allow sending of the burst service data in the resource pool corresponding to the resource configuration parameter. For example, 1 bit is used, and when 1, permission is indicated, and when 0, non-permission is indicated. Wherein the first communication device determines, if allowed, a second resource for transmitting preemption information; and under the condition that the resource configuration parameter is not allowed, the first communication device determines that the burst service data is not sent in the resource pool corresponding to the resource configuration parameter. Therefore, on one hand, the problem of burst service data transmission failure of the first communication equipment can be avoided, and the reliability of data transmission is improved; on the other hand, the interference of the data transmission of the first communication equipment to the data transmission of other communication equipment can be avoided, and the data transmission quality of other communication equipment is improved.

As for any one of the first to third manners, optionally, the preemption information in the embodiment of the present application may include all information in the existing SCI, that is, the preemption information may be sent in the existing SCI format, and at this time, when data is sent on the first resource, the SCI corresponding to the data may be sent on the first resource in the existing manner; the SCI may not be sent on the first resource because the SCI is already included in the preemption information, which is not specifically limited in the embodiment of the present application. Alternatively, optionally, a new control information format may also be defined for sending the preemption information, where the preemption information only includes minimum information indicating the first resource, for example, only includes necessary time-domain position information of the first resource, frequency-domain position information of the first resource, or priority of data on the first resource, and at this time, when sending data on the first resource, the SCI corresponding to the data on the first resource needs to be sent according to an existing manner, which is not specifically limited in this embodiment of the present application.

In step S604 in the embodiment of the present application:

optionally, if the second resource is a resource in the dedicated resource set for sending the preemption information corresponding to the first mode in step S602, the method for transmitting the preemption information provided in the embodiment of the present application may further include: the second communication equipment determines a special resource set which can be used for receiving the preemption information according to the first parameter, wherein the special resource set comprises a second resource; in turn, the second communication device detects preemption information on resources in the set of dedicated resources. In this embodiment of the present application, since the first communication device sends the preemption information on the second resource, the second communication device may detect the preemption information on the second resource, and then the second communication device may receive the preemption information on the second resource. The first parameter and the description of the dedicated resource set may refer to the first method in step S602, which is not described herein again.

Or, optionally, if the second resource is a resource in the reserved resource of the first communication device corresponding to the second mode in step S602, and the SCI includes the first indication information in the second mode, the method for transmitting the preemption information provided in this embodiment may further include: and the second communication equipment determines that the pre-occupied information is sent on the reserved resources according to the first indication information. In turn, the second communication device may receive the preemption information on the second resource. In particular, the second communication device may receive preemption information from the first communication device on the second resource based on the resource configuration parameter. The description of the resource allocation parameter in the second mode in step S602 may be referred to for the description of the resource allocation parameter, and is not repeated herein.

Or, optionally, if the second resource is a resource in the resource for sending the SCI corresponding to the third mode in step S602, and the manner of distinguishing the preemption information and the SCI is to add a field in the preemption information or the SCI for distinguishing the preemption information and the SCI, at this time, after receiving one SCI or the preemption information, the second communication device first determines whether the received SCI or the preemption information is positive according to the field, if so, performs interpretation according to the SCI format, and if so, performs interpretation according to the preemption information format, which is not specifically limited in this embodiment of the present application.

Or, optionally, if the second resource is a resource in the resource for sending the SCI corresponding to the third mode in step S602, and the manner of distinguishing the preemption information and the SCI is to use different scrambling sequences for distinguishing the two, at this time, the second communication device tries to perform blind decoding by using different scrambling sequences after receiving one SCI or the preemption information, and if the blind decoding by using the scrambling sequence of the SCI is successful (e.g., a Cyclic Redundancy Check (CRC) check is passed), performs the decoding according to the format of the SCI, and if the blind decoding by using the scrambling sequence of the preemption information is successful (e.g., a CRC check is passed), performs the decoding according to the format of the preemption information, which is not specifically limited in this embodiment of the present application.

Optionally, corresponding to the second mode in step S602, if the data on the first resource and the data on the reserved resource are data that are subjected to channel coding as a whole, the transmission method for preemption information provided in the embodiment of the present application may further include: and the second communication equipment jointly decodes the data on the first resource and the data on the reserved resource according to the second indication information.

Or, optionally, corresponding to the second mode in step S602, if the data on the first resource and the data on the reserved resource are data separately subjected to channel coding, the transmission method of the preemption information provided in the embodiment of the present application may further include: the second communication device separately decodes the data on the first resource and the data on the reserved resource according to the second indication information.

In step S605 of the embodiment of the present application:

optionally, as shown in fig. 33, if the data arrives at time n, the second communication device needs to listen within a range of [ n-1000, n-1] (listening window), and perform resource selection within a range of [ n + T1, n + T2] (resource selection window) according to a listening result. Under the condition that the second communication device is selecting resources, the second communication device performs resource avoidance on the first resource according to the preemption information, which may specifically include: the second communication equipment determines that the first resource is overlapped with a third resource in the alternative resource set of the second communication equipment according to the preemption information; the second communication device excludes the third resource from the set of alternative resources. For example, as shown in fig. 33, when the second communication device learns that the third resource in the resource selection window overlaps with the first resource, the third resource is directly excluded from the candidate resource set.

It should be noted that, in the implementation of the present application, the overlapping of the first resource and the third resource may be a partial overlapping, or may be a complete overlapping, and this is not specifically limited in the embodiment of the present application.

Or, optionally, when the second communication device has selected the third resource, the second communication device performs resource avoidance on the first resource according to the preemption information, which may specifically include: the second communication equipment determines that the third resource is overlapped with the first resource according to the preemption information; the second communications device stops transmitting data on the third resource. That is, the detection of the listen-for-preemption information continues even though the second communication device has selected the third resource. And when the second communication device knows that the third resource is occupied by the first communication device through the preemption information at a certain moment, the second communication device stops sending data on the third resource. In this case, the third resource is usually a certain reserved resource, and is described in a unified manner here, and will not be described in detail below.

Optionally, the transmission method of the preemption information provided in the embodiment of the present application may further include: the second communication equipment determines that the number of times of continuous occupation of resources occupied by the second communication equipment is greater than or equal to a preset threshold; the second communication device re-performs the resource selection. For example, if the preemption information includes that the number of times that the first communication device is expected to occupy is 4 times and the preset threshold is 3, that is, the number of times that the second communication device determines that the resource occupied by the second communication device is continuously preempted is greater than the preset threshold, the second communication device needs to perform resource selection again; or, for example, if the number of times that the first communication device is expected to occupy is 4 and the preset threshold is 4 in the preemption information, that is, the number of times that the second communication device determines that the resource occupied by the second communication device is continuously preempted is equal to the preset threshold, the second communication device needs to perform resource selection again. By re-selecting the resources, service interruption possibly caused by the second communication device waiting for a long time can be avoided, and the reliability of data transmission of the second communication device is improved.

For example, as shown in fig. 34, in a case where the second communication device has selected the third resource and the third resource is a certain reserved resource, if the second communication device determines that the third resource overlaps with the first resource according to the preemption information and the number of times of preemption expected by the first communication device is 1 and is less than the preset threshold, the second communication device does not use the third resource to transmit data any more and waits for the next cycle of data to be transmitted on the reserved resource.

Or, for example, as shown in fig. 35, in a case that the second communication device has selected the third resource and the third resource is a certain reserved resource, if the second communication device determines, according to the preemption information, that the third resource overlaps with the first resource and the number of times of preemption expected by the first communication device is 3 times and is greater than or equal to a preset threshold, the second communication device is triggered to perform resource reselection.

It should be noted that, in this embodiment of the present application, the second communication device may reselect the resource when it is known that the number of times that the resource occupied by the second communication device is continuously preempted is greater than or equal to a preset threshold, for example, after acquiring the preemption information and obtaining the number of times that the first communication device is expected to occupy according to the preemption information; or, when the second communication device cannot know the number of times that the first communication device is expected to occupy, the second communication device may reselect the resource when it knows that the number of times that the occupied resource has been continuously preempted is greater than or equal to a preset threshold, which is not specifically limited in this embodiment of the present application.

Based on the transmission method of the preemption information provided by the embodiment of the application, the first communication device can send the preemption information indicating that the first resource is occupied by the first communication device to the second communication device after determining the first resource to be occupied, so that the second communication device can know that the first resource is occupied by the first communication device and avoid the first resource, and therefore, when the first communication device has a burst service, the probability that the first communication device and the second communication device select the same resource is reduced, and the reliability of burst service data transmission is improved.

The actions of the first communication device or the second communication device in steps S601 to S605 may be executed by the processor 501 in the communication device 500 shown in fig. 5 calling the application program code stored in the memory 503, which is not limited in this embodiment.

In summary, an embodiment of the present application discloses a method for sending preemption information, including: the method comprises the steps that first communication equipment determines first resources to be occupied and second resources used for sending preemption information, wherein the preemption information is used for indicating that the first resources are occupied by the first communication equipment, and the time domain position of the second resources is before the time domain position of the first resources; the first communication device sends preemption information to the second communication device on the second resource.

As an implementation, the second resource is a resource in a dedicated resource set for sending preemption information; the first communications device determining a second resource for transmitting preemption information, comprising: the first communication equipment determines a special resource set which can be used for sending the preemption information according to the first parameter; the first communications device determines a second resource from the set of dedicated resources for transmitting preemption information.

As another implementation, the second resource is a resource of the reserved resources of the first communication device.

As yet another implementation, the second resource is a resource among resources used to transmit the SCI.

Optionally, in the sending method of preemption information disclosed in the embodiment of the present application, determining, by the first terminal, the first resource to be occupied includes: the first terminal determines a first resource to be occupied according to the received service priority indicated in the SCI sent by the other terminal and the resource indicated in the SCI sent by the other terminal.

For example, in the sending method of the preemption information, the operation of the first communication device in fig. 6 and the related text description are referred to for operation of the first communication device, and are not repeated here.

The embodiment of the application discloses a method for receiving preemption information, which comprises the following steps: the second communication equipment receives preemption information from the first communication equipment on a second resource, wherein the preemption information is used for indicating that the first resource is occupied by the first communication equipment, and the time domain position of the second resource is before the time domain position of the first resource; and the second communication equipment avoids the first resource according to the preemption information.

As one implementation, the resource avoiding of the first resource by the second communication device according to the preemption information includes: under the condition that the second communication equipment is selecting resources, the second communication equipment determines that the first resources are overlapped with third resources in an alternative resource set of the second communication equipment according to the preemption information; the second communication device excludes the third resource from the set of alternative resources.

As another implementation, the resource avoiding, performed by the second communication device, on the first resource according to the preemption information includes: under the condition that the second communication equipment selects the third resource, the second communication equipment determines that the third resource is overlapped with the first resource according to the preemption information; the second communications device stops transmitting data on the third resource.

Optionally, the method for receiving preemption information disclosed in the embodiment of the present application may further include: the second communication equipment determines that the number of times of continuous occupation of resources occupied by the second communication equipment is greater than or equal to a preset threshold; the second communication device re-performs the resource selection.

As an implementation, the second resource is a resource in a dedicated resource set for sending preemption information; the method for receiving preemption information disclosed in the embodiment of the present application may further include: the second communication equipment determines a special resource set which can be used for receiving the preemption information according to the first parameter, wherein the special resource set comprises a second resource; the second communication device detects preemption information on resources in the set of dedicated resources.

Optionally, the reserved resource is further configured to send an SCI, where the SCI includes the first indication information; the method for receiving preemption information disclosed in the embodiment of the present application may further include: and the second communication equipment determines that the reserved resources have preemption information to send according to the first indication information.

Optionally, the SCI further includes resource configuration parameters, where the resource configuration parameters include: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information; the second communication device receiving preemption information from the first communication device on a second resource, comprising:

the second communication device receives preemption information from the first communication device on a second resource based on the resource configuration parameters.

Optionally, the preemption information includes second indication information; the method for receiving preemption information disclosed in the embodiment of the present application may further include: and the second communication equipment determines the information on the second resource as the preemption information according to the second indication information.

Or, the optional preemption information is scrambled by a scrambling sequence different from the SCI; the method for receiving preemption information disclosed in the embodiment of the present application may further include: and the second communication equipment determines the information on the second resource as the preemption information according to the scrambling sequence of the information on the second resource.

For example, in the sending method of the preemption information, the operation of the second communication device in fig. 6 and the related text description are referred to for the operation of the second communication device, and are not repeated here.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that the first communication device or the second communication device includes a hardware structure and/or a software module for performing the respective functions in order to realize the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the first communication device or the second communication device may be divided into the functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

For example, in the case where the functional modules are divided in an integrated manner, fig. 36 shows a schematic configuration diagram of the first communication device 360. The first communication device 360 may include, for example, a terminal or a chip or a circuit in the terminal, which is not particularly limited in this embodiment of the application. Wherein the first communication device 360 comprises: a processing module 3601 and a transceiver module 3602. A processing module 3601, configured to determine a first resource to be occupied and a second resource used for sending preemption information, where the preemption information is used to indicate that the first resource is occupied by the first communication device, and a time domain position of the second resource is before a time domain position of the first resource; a transceiver module 3602, configured to send preemption information to a second communication device on a second resource.

In a possible implementation, the second resource is a resource in a dedicated resource set used for sending the preemption information; the processing module 3601 is specifically configured to: determining a special resource set which can be used for sending the preemption information according to the first parameter; a second resource for transmitting preemption information is determined from the set of dedicated resources.

In another possible implementation, the second resource is a resource of the reserved resources of the first communication device.

In yet another possible implementation, the second resource is a resource among resources used for transmitting the SCI.

Optionally, the processing module 3601 is specifically configured to: and determining a first resource to be occupied according to the received service priority indicated in the SCI sent by the other terminal and the resource indicated in the SCI sent by the other terminal.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the present embodiment, the first communication device 360 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality.

In a simple embodiment, one skilled in the art will recognize that the first communication device 360 may take the form shown in FIG. 5.

For example, the processor 501 in fig. 5 may cause the first communication device 360 to execute the transmission method of the preemption information in the above method embodiment by calling a computer-executable instruction stored in the memory 503.

In particular, the functions/implementation procedures of the processing module 3601 and the transceiving module 3602 in fig. 36 may be implemented by the processor 501 in fig. 5 calling a computer executing instruction stored in the memory 503. Alternatively, the functions/implementation procedures of the processing module 3601 in fig. 36 may be implemented by the processor 501 in fig. 5 calling a computer executing instruction stored in the memory 503, and the functions/implementation procedures of the transceiving module 3602 in fig. 36 may be implemented by the communication interface 504 in fig. 5.

Alternatively, when the first communication device 360 is a chip or a circuit, the memory 503 may be a storage unit in the chip or the circuit, such as a register, a cache, and the like. Of course, when the first communication device 360 is a terminal, the memory 503 may be a storage unit located outside the chip in the terminal, and this is not particularly limited in this embodiment of the application.

Since the first communication device provided in the embodiment of the present application may be configured to execute the transmission method of the preemption information, the technical effect obtained by the first communication device may refer to the method embodiment, and is not described herein again.

For example, in the case where the functional modules are divided in an integrated manner, fig. 37 shows a schematic configuration diagram of the second communication device 370. The second communication device 370 may include, for example, a terminal or a chip or a circuit in the terminal, which is not particularly limited in this embodiment of the application. Wherein the second communication device 370 comprises: a processing module 3701 and a transceiver module 3702. A transceiver module 3702, configured to receive preemption information from the first communication device on a second resource, the preemption information indicating that the first resource is occupied by the first communication device, wherein a time domain location of the second resource is before a time domain location of the first resource; a processing module 3701, configured to perform resource avoidance on the first resource according to the preemption information.

Optionally, the processing module 3701 is specifically configured to: under the condition that the second communication equipment is selecting resources, determining that the first resources are overlapped with third resources in an alternative resource set of the second communication equipment according to the preemption information; the third resource is excluded from the set of alternative resources.

Or, optionally, the processing module 3701 is specifically configured to: determining, based on the preemption information, that the third resource overlaps the first resource when the second communication device has selected the third resource; ceasing to transmit data on the third resource.

Further, the processing module 3701 is further configured to determine that the number of times that the resource occupied by the second communication device is continuously preempted is greater than or equal to a preset threshold; processing block 3701, also provides for re-performing resource selection.

In one possible implementation, the second resource is a resource in a dedicated set of resources for transmitting the preemption information. Correspondingly, the processing module 3701 is further configured to determine, according to the first parameter, a dedicated resource set that can be used for receiving the preemption information, where the dedicated resource set includes the second resource; a processing block 3701, is also configured to detect preemption information on resources in the dedicated set of resources.

In another possible implementation, the second resource is a resource of the reserved resources of the first communication device. Correspondingly, the reserved resource is also used for sending sidelink control information SCI, and the SCI comprises first indication information; the processing module 3701 is further configured to determine, according to the first indication information, that the preemption information is sent in the reserved resource.

The optional SCI further includes resource configuration parameters, where the resource configuration parameters include: at least one of time domain location information of the second resource, frequency domain location information of the second resource, or an MCS of the preemption information; the transceiver module 3702 is specifically configured to: preemption information is received from the first communication device on the second resource in accordance with the resource configuration parameter.

In yet another possible implementation, the second resource is a resource among resources used for transmitting the SCI. Correspondingly, the preemption information comprises second indication information; the processing module 3701, is further configured to determine, according to the second indication information, that the information on the second resource is the preemption information; or, correspondingly, scrambling the preemption information by a scrambling sequence different from the SCI; the processing module 3701 is further configured to determine, according to the scrambling sequence of the information on the second resource, that the information on the second resource is the preemption information.

In the present embodiment, the second communication device 370 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality.

In a simple embodiment, one skilled in the art will recognize that the second communication device 370 may take the form shown in FIG. 5.

For example, the processor 501 in fig. 5 may cause the second communication device 370 to execute the transmission method of the preemption information in the above method embodiment by calling a computer-executable instruction stored in the memory 503.

In particular, the functions/implementation procedures of the processing module 3701 and the transceiver module 3702 of fig. 37 may be implemented by the processor 501 of fig. 5 calling a computer executing instructions stored in the memory 503. Alternatively, the functions/implementation procedures of the processing module 3701 in fig. 37 may be implemented by the processor 501 in fig. 5 calling a computer executing instructions stored in the memory 503, and the functions/implementation procedures of the transceiving module 3702 in fig. 37 may be implemented by the communication interface 504 in fig. 5.

Alternatively, when the second communication device 370 is a chip or a circuit, the memory 503 may be a storage unit in the chip or the circuit, such as a register, a cache, and the like. Of course, when the second communication device 370 is a terminal, the memory 503 may be a storage unit located outside the chip in the terminal, and this embodiment of the present application is not limited in this respect.

Since the second communication device provided in the embodiment of the present application may be configured to execute the transmission method of the preemption information, the technical effect obtained by the second communication device may refer to the method embodiment, and is not described herein again.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may 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. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "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 a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such 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 intended to include such modifications and variations as well.

Claims

1. A method for transmitting preemption information, the method comprising:

a first communication device determines a first resource to be occupied and a second resource used for sending preemption information, wherein the preemption information is used for indicating that the first resource is occupied by the first communication device, and the time domain position of the second resource is before the time domain position of the first resource;

the first communication device sends the preemption information to a second communication device on the second resource.

2. The method of claim 1, wherein the second resource is a resource in a set of dedicated resources for sending preemption information; the first communications device determining a second resource for transmitting preemption information, comprising:

the first communication device determining the set of dedicated resources available for transmitting the preemption information in accordance with a first parameter;

the first communications device determines the second resource from the set of dedicated resources for transmitting the preemption information.

3. The method of claim 2, wherein the first parameter is a parameter in a resource configuration parameter, and wherein the resource configuration parameter is a parameter configured by a network device or a parameter pre-configured on the first communication device.

4. The method of claim 1, wherein the second resource is a resource of a reserved resource of the first communication device.

5. The method of claim 4, wherein the reserved resources are further used for transmitting Sidelink Control Information (SCI), and wherein the SCI includes first indication information indicating that the reserved resources have been preemptively transmitted.

6. The method of claim 5 wherein the SCI further includes a resource configuration parameter, the resource configuration parameter being used by the second communication device to receive the preemption information;

wherein the resource configuration parameters include: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information.

7. The method of claim 1, wherein the second resource is a resource of resources used for transmitting SCI.

8. The method according to claim 7, wherein the preemption information includes second indication information indicating that the information is preemption information; alternatively, the preemption information is scrambled with a scrambling sequence different from the SCI.

9. The method of any of claims 1-8, wherein the preemption information comprises at least one of time domain location information for the first resource, frequency domain location information for the first resource, priority of data on the first resource, MCS for data on the first resource, periodicity of the first resource, or a number of anticipated occupancies.

10. The method of any of claims 1-9, wherein determining, by the first communications device, the first resource to be occupied comprises:

the first communication equipment determines the first resource to be occupied according to the received service priority indicated in the SCI sent by other communication equipment and the resource indicated in the SCI sent by the other communication equipment.

11. A method of receiving preemption information, the method comprising:

a second communication device receiving preemption information from a first communication device on a second resource, the preemption information for indicating that the first resource is occupied by the first communication device, wherein a time domain location of the second resource precedes a time domain location of the first resource;

and the second communication equipment avoids the resources of the first resources according to the preemption information.

12. The method of claim 11, wherein the second communications device performing resource avoidance on the first resource based on the preemption information, comprises:

under the condition that the second communication device is selecting resources, the second communication device determines that the first resources are overlapped with third resources in an alternative resource set of the second communication device according to the preemption information;

the second communications device excludes the third resource from the set of alternative resources.

13. The method of claim 11, wherein the second communications device performing resource avoidance on the first resource based on the preemption information, comprises:

in the case that the second communication device has selected a third resource, the second communication device determines, according to the preemption information, that the third resource overlaps with the first resource;

the second communications device stops transmitting data on the third resource.

14. The method according to claim 11 or 13, further comprising:

the second communication equipment determines that the number of times of continuous occupation of the resource occupied by the second communication equipment is greater than or equal to a preset threshold;

the second communication device re-selects resources.

15. The method according to any of claims 11-14, wherein said second resource is a resource of a set of dedicated resources for transmitting preemption information; the method further comprises the following steps:

the second communication device determines the dedicated resource set which can be used for receiving the preemption information according to a first parameter, wherein the dedicated resource set comprises the second resource;

the second communications device detects the preemption information on resources in the set of dedicated resources.

16. The method of claim 15, wherein the first parameter is a parameter in a resource configuration parameter, and wherein the resource configuration parameter is a parameter configured by a network device or a parameter pre-configured on the second communication device.

17. The method according to any of claims 11-14, wherein the second resource is a resource of the reserved resources of the first communication device.

18. The method of claim 17, wherein the reserved resources are further used for transmitting Sidelink Control Information (SCI), and wherein the SCI includes first indication information; the method further comprises the following steps:

and the second communication equipment determines that the reserved resources have preemption information to send according to the first indication information.

19. The method of claim 18 wherein the SCI further includes resource configuration parameters, the resource configuration parameters including: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information;

the second communication device receiving preemption information from the first communication device on a second resource, comprising:

and the second communication equipment receives the preemption information from the first communication equipment on the second resource according to the resource configuration parameter.

20. The method according to any of claims 11-14, wherein said second resource is a resource of the resources used for transmitting SCI.

21. The method of claim 20, wherein second indication information is included in the preemption information; the method further comprises the following steps: the second communication equipment determines the information on the second resource as preemption information according to the second indication information; or,

scrambling the preemption information by a scrambling sequence different from the SCI; the method further comprises the following steps: and the second communication equipment determines the information on the second resource as preemption information according to the scrambling sequence of the information on the second resource.

22. The method of any of claims 11-21, wherein the preemption information comprises at least one of time domain location information for the first resource, frequency domain location information for the first resource, priority of data on the first resource, MCS for data on the first resource, periodicity of the first resource, or a number of anticipated occupancies.

23. A first communications device, characterized in that the first communications device comprises: the device comprises a processing module and a transmitting-receiving module;

the processing module is configured to determine a first resource to be occupied and a second resource used for sending preemption information, where the preemption information is used to indicate that the first resource is occupied by the first communication device, and a time domain position of the second resource is before a time domain position of the first resource;

and the transceiver module is configured to send the preemption information to a second communication device on the second resource.

24. The first communications device of claim 23, wherein said second resource is a resource of a set of dedicated resources for transmitting preemption information; the processing module is specifically configured to:

determining the dedicated resource set available for sending the preemption information according to a first parameter;

determining the second resource for sending the preemption information from the set of dedicated resources.

25. The first communications device of claim 24, wherein the first parameter is a parameter in a resource configuration parameter, wherein the resource configuration parameter is a network device configured parameter or a parameter pre-configured on the first communications device.

26. The first communications device of claim 23, wherein said second resource is a resource of a reserved resource of said first communications device.

27. The first communications device of claim 26, wherein said reserved resources are further configured to transmit sidelink control information SCI, wherein said SCI includes first indication information indicating that preemption information is transmitted for said reserved resources.

28. The first communications device of claim 27, further comprising a resource configuration parameter in the SCI, the resource configuration parameter being used for the second communications device to receive the preemption information;

29. The first communications device of claim 23, wherein said second resource is a resource of resources used for transmitting SCIs.

30. The first communications device of claim 29, wherein second indication information is included in said preemption information, said second indication information indicating that the information is preemption information; alternatively, the preemption information is scrambled with a scrambling sequence different from the SCI.

31. The first communications device of any of claims 23-30, wherein said preemption information comprises at least one of time domain location information for said first resource, frequency domain location information for said first resource, priority of data on said first resource, MCS for data on said first resource, periodicity of said first resource, or number of anticipated engagements.

32. The first communications device of any one of claims 23-31, wherein the processing module is specifically configured to:

and determining the first resource to be occupied according to the received service priority indicated in the SCI sent by the other communication equipment and the resource indicated in the SCI sent by the other communication equipment.

33. A second communication device, characterized in that the second communication device comprises: a transceiver module and a processing module;

the transceiver module is configured to receive preemption information from a first communication device on a second resource, where the preemption information indicates that the first resource is occupied by the first communication device, and a time domain location of the second resource is before a time domain location of the first resource;

and the processing module is used for avoiding the resources of the first resource according to the preemption information.

34. The second communications device of claim 33, wherein the processing module is specifically configured to:

under the condition that the second communication equipment is selecting resources, determining that the first resources are overlapped with third resources in an alternative resource set of the second communication equipment according to the preemption information;

excluding the third resource from the set of alternative resources.

35. The second communications device of claim 34, wherein the processing module is specifically configured to:

determining, in a case where a third resource has been selected by the second communication device, that the third resource overlaps the first resource based on the preemption information;

ceasing to transmit data on the third resource.

36. The second communication device of claim 33 or 35,

the processing module is further configured to determine that the number of times that resources occupied by the second communication device are continuously preempted is greater than or equal to a preset threshold;

the processing module is further configured to reselect the resource.

37. A second communications device according to any of claims 33-36, wherein said second resource is a resource in a set of dedicated resources for transmitting preemption information;

the processing module is further configured to determine, according to a first parameter, the dedicated resource set that is available for receiving the preemption information, where the dedicated resource set includes the second resource;

the processing module is further configured to detect the preemption information on resources in the dedicated resource set.

38. The second communications device according to claim 37, wherein the first parameter is a parameter in a resource configuration parameter, wherein the resource configuration parameter is a parameter configured by a network device or a parameter pre-configured on the second communications device.

39. A second communication device according to any of claims 33-36, wherein the second resource is a resource of the reserved resources of the first communication device.

40. The second communications device of claim 39, wherein the reserved resources are further configured to transmit Sidelink Control Information (SCI), and wherein the SCI includes first indication information;

the processing module is further configured to determine that preemption information is sent in the reserved resource according to the first indication information.

41. The second communications device of claim 40, wherein said SCI further includes resource configuration parameters, said resource configuration parameters including: at least one of time domain position information of the second resource, frequency domain position information of the second resource, or a modulation and coding format (MCS) of the preemption information;

the transceiver module is specifically configured to:

receiving the preemption information from the first communication device on the second resource in accordance with the resource configuration parameters.

42. The second communications device according to any of claims 33-36, wherein said second resource is a resource of the resources used for transmitting SCIs.

43. The second communications device of claim 42, wherein second indication information is included in said preemption information; the processing module is further configured to determine, according to the second indication information, that the information on the second resource is preemption information; or,

scrambling the preemption information by a scrambling sequence different from the SCI; the processing module is further configured to determine, according to the scrambling sequence of the information on the second resource, that the information on the second resource is preemption information.

44. The second communications device of any one of claims 33-43, wherein said preemption information comprises at least one of time domain location information for said first resource, frequency domain location information for said first resource, priority of data on the first resource, MCS for data on the first resource, periodicity of said first resource, or number of anticipated occupancies.

45. A first communications device, wherein the first communications device comprises a processor and a memory;

the memory is for storing computer-executable instructions which, when executed by the first communication device, are for execution by the processor to cause the first communication device to perform the method of transmitting preemption information as claimed in any of claims 1 to 10.

46. A second communications device, characterized in that the second communications device comprises a processor and a memory;

the memory is for storing computer-executable instructions which, when executed by the second communication device, cause the second communication device to perform the method of transmitting preemption information as claimed in any of claims 11 to 22.

47. A system for transmission of preemption information, comprising a first communication device according to any of claims 23 to 32 and a second communication device according to any of claims 33 to 44; or,

the transmission system of preemption information comprises a first communication device as in claim 45 and at least one second communication device as in claim 46.