WO2018107458A1

WO2018107458A1 - Apparatus and method for unauthorized transmission and communication system

Info

Publication number: WO2018107458A1
Application number: PCT/CN2016/110312
Authority: WO
Inventors: 杨现俊; 王昕�; 张健
Original assignee: 富士通株式会社; 杨现俊; 王昕�; 张健
Priority date: 2016-12-16
Filing date: 2016-12-16
Publication date: 2018-06-21

Abstract

An apparatus and method for unauthorized transmission and a communication system. The method comprises: receiving data information from user equipment which comprises a data payload and a demodulation reference signal, the data information further comprising an indicator for indicating whether the present data transmission is initial transmission or re-transmission; performing user detection on the basis of the demodulation reference signal; demodulating the data information on the basis of the demodulation reference signal; and transmitting feedback information to a user equipment according to a result of user detection and a result of the demodulation of the data information. Thus, a network device may distinguish initial transmission and re-transmission under unauthorized transmission in a simple way without reducing the utilization rate of limited resources.

Description

Apparatus, method and communication system for unauthorized transmission

Technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to an apparatus, method, and communication system for unauthorized transmission.

Background technique

Uplink (UL, Uplink) grant-free transmission (also known as unscheduled transmission) technology is one of the research hotspots of the fifth generation (5G) communication, in large-scale machine communication (mMTC, massive Machine Type) Communication) has obvious advantages in applications such as URLLC (Ultra Reliable and Low Latency Communication).

In particular, the unlicensed transmission can reduce the signaling overhead required for small packet transmission in mMTC and reduce the time required for URLLC data transmission. However, due to the characteristics of the unlicensed transmission, the user equipment (UE, User Equipment) does not have a dedicated resource, and the user equipment is prone to conflicts, resulting in data transmission failure.

In order to improve the reliability of unlicensed transmission technology, hybrid automatic repeat request (HARQ, Hybrid Autonomic Repeat reQuest) technology in the application of the authorization-free transmission technology, in the third Generation Partnership Project ^{(3GPP, 3 rd Generation Partnership Project} ) radio Access Network Working Group 1 (RAN1, Radio Access Network WG1) achieved unanimous approval at the 85th conference and will support asynchronous HARQ to reduce the probability of retransmission collisions. Further, further research on HARQ merging technology was adopted at the 3GPP RAN1 #86 meeting.

In an unlicensed transmission technology, a network device (for example, a base station) cannot know in advance which user equipment performs data transmission. Therefore, when implementing HARQ under license-free transmission, the network device cannot distinguish data from a certain user equipment. Pass (new pass) or re-pass.

In order to distinguish between initial transmission and retransmission, it has been proposed in the literature to divide the pilot into different sets, corresponding to the initial transmission, the first retransmission, the second retransmission, and the like; the network device detects a certain After the pilot, it is determined whether the data transmission is the first transmission or the first retransmission according to the set to which the pilot belongs. In addition, other documents also propose to group time-frequency resources that can be used for unlicensed transmission, and different groups represent initial transmission, first retransmission, second retransmission, and the like.

It should be noted that the above description of the technical background is only for the purpose of facilitating a clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention.

The following is a list of documents useful for understanding the present invention and conventional techniques, which are incorporated herein by reference as if fully set forth herein.

[Reference 1] 3GPP R1-1608859, The retransmission and HARQ schemes for grant-free, Huawei, HiSilicon.

[Reference 2] 3GPP R1-1609039, Support of HARQ in grant-free based multiple access, Samsung.

Summary of the invention

However, the inventors have found that the current schemes group pilot and/or time-frequency resources such that limited pilot and/or time-frequency resources can only be used by certain user equipments that satisfy the conditions, while network equipment cannot It is determined in advance whether these user equipments are active, thus reducing the utilization of limited pilot and/or time-frequency resources.

Embodiments of the present invention provide an apparatus, method, and communication system for unauthorized transmission, which can distinguish between initial transmission and retransmission under unlicensed transmission in a simple manner without reducing the utilization rate of limited resources.

According to a first aspect of the embodiments of the present invention, a receiving method for an unlicensed transmission is provided, including:

Receiving, from the user equipment, data information including a data payload and a demodulation reference signal; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

Performing user detection based on the demodulation reference signal;

Demodulating the data information based on the demodulation reference signal;

And transmitting feedback information to the user equipment according to the result of the user detection and the result of demodulating the data information.

According to a second aspect of the embodiments of the present invention, a receiving apparatus for unauthorized transmission is provided, including:

a data receiving unit that receives data information from the user equipment including a data payload and a demodulation reference signal; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

a user detecting unit that performs user detection based on the demodulation reference signal;

a data demodulation unit that demodulates the data information based on the demodulation reference signal;

An information feedback unit that is configured according to a result of the user detection and a result of demodulating the data information The user equipment sends feedback information.

According to a third aspect of the embodiments of the present invention, a method for transmitting an unlicensed transmission is provided, including:

Transmitting, to the network device, data information including a data payload and a demodulation reference signal; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

Receiving feedback information from the network device within a prescribed time.

According to a fourth aspect of the embodiments of the present invention, a transmitting apparatus for unauthorized transmission is provided, including:

a data sending unit that transmits data information including a data payload and a demodulation reference signal to the network device; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

An information receiving unit that receives feedback information from the network device within a prescribed time.

According to a fifth aspect of the embodiments of the present invention, a communication system is provided, including:

a network device comprising the receiving device for unauthorized transmission as described in the second aspect above;

User equipment comprising the transmitting device for unauthorized transmission as described in the fourth aspect above.

The beneficial effects of the embodiment of the present invention are that the data information sent by the user equipment includes not only the data payload and the demodulation reference signal, but also an indicator for indicating whether the current data transmission is an initial transmission or a retransmission. Thus, the network device can distinguish between the initial transmission and the retransmission under the unlicensed transmission in a simple manner without reducing the usage rate of the limited resources.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the drawings, in which <RTIgt; It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in one or more other embodiments in the same or similar manner, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprises" or "comprising" or "comprising" or "comprising" or "comprising" or "comprises"

DRAWINGS

The elements and features described in one of the figures or one embodiment of the embodiments of the invention may be combined with the elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the

1 is a schematic diagram of a communication system according to an embodiment of the present invention;

2 is a schematic diagram of a method for unlicensed transmission according to Embodiment 1 of the present invention;

3 is a schematic diagram of data information according to Embodiment 1 of the present invention;

4 is another schematic diagram of a method for license-free transmission according to Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of feedback information according to Embodiment 1 of the present invention; FIG.

6 is another schematic diagram of feedback information according to Embodiment 1 of the present invention;

7 is another schematic diagram of a method for user-free transmission of a user according to Embodiment 1 of the present invention;

8 is a schematic diagram of a method for user-free transmission of a user according to Embodiment 2 of the present invention;

9 is another schematic diagram of a method for user-free transmission of a user according to Embodiment 2 of the present invention;

10 is a schematic diagram of a receiving apparatus for unauthorized transmission according to Embodiment 3 of the present invention;

11 is a schematic diagram of a transmitting apparatus for unauthorized transmission according to Embodiment 4 of the present invention;

FIG. 12 is a schematic diagram of a network device according to Embodiment 5 of the present invention; FIG.

FIG. 13 is a schematic diagram of a user equipment according to Embodiment 5 of the present invention.

detailed description

The foregoing and other features of the present invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which are illustrated in the embodiment of the invention The invention includes all modifications, variations and equivalents falling within the scope of the appended claims.

In the embodiment of the present invention, the terms "first", "second", etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "comprising," "having," or "an"

In the embodiments of the present invention, the singular forms "a", "the", "the", "the" and "the" It is to be understood that the singular In addition, the term "subject" should be understood to mean "based at least in part", and the term "based on" should be understood to mean "based at least in part on" unless the context clearly indicates otherwise.

In the embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.

Moreover, the communication between devices in the communication system may be performed according to any phase of the communication protocol, and may include, for example but not limited to, the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future. 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiment of the present invention, the term "network device" refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device. The network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.

The base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a Remote Radio Head (RRH). , Remote Radio Unit (RRU), relay or low power node (eg femto, pico, etc.). And the term "base station" may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" can refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiment of the present invention, the term "user equipment" (UE) or "Terminal Equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives a network service. The user equipment may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.

The user equipment may include, but is not limited to, a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, Cordless phones, smart phones, smart watches, digital cameras, and more.

For example, in a scenario such as the Internet of Things (IoT), the user equipment may also be a machine or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal, In-vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, and the like.

The scenario of the embodiment of the present invention is described below by way of example, but the present invention is not limited thereto.

1 is a schematic diagram of a communication system according to an embodiment of the present invention, schematically illustrating a case where a user equipment and a network device are taken as an example. As shown in FIG. 1, the communication system 100 may include a network device 101 and a user equipment 102 (for simplicity) For example, Figure 1 only uses one user equipment as an example.)

In the embodiment of the present invention, an existing service or a service that can be implemented in the future can be performed between the network device 101 and the user equipment 102. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and high reliability low latency communication (URLLC, Ultra-Reliable and Low- Latency Communication), and more.

The user equipment 102 can transmit data to the network device 101, for example, using an unlicensed transmission method. The network device 101 can receive data sent by one or more user devices 102 and feed back information (eg, acknowledge ACK/non-acknowledgement NACK) information to the user device 102. The user device 102 can confirm the end of the transmission process according to the feedback information, or can further Perform new data transfer or data retransmission.

The following is an example in which a network device in a communication system is used as a receiving end and a user device is used as a transmitting end. However, the present invention is not limited thereto, and the transmitting end and/or the receiving end may be other devices. For example, the present invention is applicable not only to uplink unlicensed transmission between a network device and a user equipment, but also to side-link unlicensed transmission between two user equipments.

Example 1

An embodiment of the present invention provides a receiving method for unauthorized transmission, which is applied to a receiving end (for example, a network device). 2 is a schematic diagram of a method for unlicensed transmission according to an embodiment of the present invention, which is schematically illustrated from the perspective of a receiving end (for example, a network device); as shown in FIG. 2, the method includes:

Step 201: The network device receives, by the user equipment, data information including a data payload and a demodulation reference signal, where the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

Step 202: The network device performs user detection based on the demodulation reference signal.

Step 203: The network device demodulates the data information based on the demodulation reference signal;

Step 204: The network device sends feedback information to the user equipment according to the result of the user detection and the result of demodulating the data information.

In this embodiment, after the network device and the user equipment establish downlink synchronization, the user equipment can perform uplink unlicensed transmission according to requirements. The data information sent by the user equipment may include: a Demodulation Reference Signal (DMRS) and a data payload, and further includes a retransmission indicator (reTx indicator).

FIG. 3 is a schematic diagram of data information according to an embodiment of the present invention. As shown in FIG. 3, an indicator (reTx indicator) for indicating whether the current data transmission is initial transmission or retransmission may be included in the data information. The indicator may be, for example, 1 bit. For example, “0” indicates that the current data transmission is an initial transmission, and “1” indicates that the current data transmission is a retransmission; however, the present invention is not limited thereto.

In this embodiment, in the case that the current data transmission is a retransmission, the indicator may also be used to indicate that the current data transmission is the first retransmission. For example, the indicator may also be 2 bits. For example, “00” indicates that the current data transmission is initial transmission, “01” indicates that the current data transmission is the first retransmission, and “10” indicates that the current data transmission is the second time. Retransmission, "11" indicates that this data transmission is the third retransmission.

It should be noted that the retransmission indicator of the embodiment of the present invention is only described in the above, but the present invention is not limited thereto. The specific number of bits or the specific meaning of the retransmission indicator may be determined according to actual conditions. In addition, FIG. 3 only schematically shows the data information of the embodiment of the present invention, but the present invention is not limited thereto, and for example, the data information may further include other information.

Thus, the network device can distinguish between the initial transmission and the retransmission under the unlicensed transmission according to the retransmission indicator, and does not reduce the usage rate of the limited resources.

FIG. 4 is another schematic diagram of a method for unauthorized transmission according to an embodiment of the present invention, which is schematically illustrated from the perspective of a receiving end (eg, a network device). As shown in FIG. 4, the method includes:

Step 401: The network device receives data information from the user equipment.

In this embodiment, the data information includes a data payload and a demodulation reference signal, and further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission; however, the present invention is not limited thereto, and may include, for example, Other information.

Step 402: The network device detects the user equipment based on the demodulation reference signal.

In this embodiment, all user equipments in a cell may be divided into multiple groups, and each group may have For dedicated time-frequency resources for unlicensed transmission, each UE in the group has a group UE ID. Each group can be divided into multiple sets, each set has a set ID, each set includes multiple user equipments, each UE in the set has a set UE ID; and each user equipment The identifier may be a hierarchical identifier, that is, includes a set identifier (set ID) and an in-set user equipment identifier (set UE ID).

For example, all user equipments in a cell may be divided into three groups, each group including 128 UEs, and further divided into 16 sets, that is, each set includes 8 UEs. For example, a hierarchical ID of a user equipment may be represented as (8, 7), where "8" is a set ID and 7 is a set UE ID.

In this embodiment, the DMRS can be used for data demodulation. In addition, there may be a corresponding relationship between the DMRS and the identifier of the user equipment; for example, the UE in each group has a unique corresponding DMRS, that is, the DMRS and the group UE ID are pre-configured in a one-to-one correspondence, so the DMRS It can also be used for detecting the user equipment, that is, the network device can know which user equipment the data information comes from according to the detection of the DMRS (and using the corresponding relationship).

Step 403: The network device determines whether the user equipment is detected; if yes, step 404 is performed; otherwise, step 408 is performed.

Step 404: The network device demodulates the data information based on the demodulation reference signal.

Step 405: The network device determines whether the data information is demodulated; if yes, step 406 is performed; otherwise, step 407 is performed.

Step 406: The network device feeds back, to the user equipment, feedback information including an ACK.

In this embodiment, in a case where both the user equipment is detected and the data information is demodulated, the network device sends feedback information including an acknowledgement (ACK) to the user equipment. The feedback information further includes a hierarchical identifier of the user equipment, that is, an identifier consisting of a set identifier (set ID) and a set user equipment identifier (set UE ID).

FIG. 5 is a schematic diagram of feedback information according to an embodiment of the present invention. As shown in FIG. 5, the feedback information may include: a set ID and a set UE ID of the user equipment; and further includes ACK information, indicating that the data information has been Received correctly by the network device.

Step 407: The network device feeds back, to the user equipment, feedback information including a NACK.

In this embodiment, in the case that the user equipment is detected but the data information is not demodulated, the network device sends feedback information including non-acknowledgement (NACK) to the user equipment (may also include retransmission mode) information). The feedback information may further include a hierarchical identifier of the user equipment, that is, a set identifier (set ID). User equipment identifier composed of user equipment identifiers (set UE IDs) in the set.

FIG. 6 is another schematic diagram of the feedback information according to the embodiment of the present invention. As shown in FIG. 6, the feedback information may include: a set ID and a set UE ID of the user equipment; and further including NACK information, used to indicate the data information. Not properly received by the network device.

In addition, as shown in FIG. 6, the feedback information may further include retransmission mode information, where the retransmission mode information is used to indicate whether the retransmission is an additional combining (CC, Chase Combination) or incremental redundancy. (IR, Incremental Redundancy) way. Wherein, in the case that the retransmission adopts the IR mode, the retransmission mode information may further indicate that the first redundancy version (RV, Redundancy Version) is adopted.

Therefore, the network device can determine the HARQ combining mode according to the data demodulation performance of the user equipment, that is, adopt CC or IR, and adopt the first RV when adopting IR. In addition, if the retransmission mode has been agreed in advance, the feedback information may not include the retransmission mode information.

Step 408: The network device does not send feedback information to the user equipment.

In this embodiment, if the network device does not detect the user equipment in step 403 (in general, the data information is not demodulated in step 405), the network device does not feed back any information to the user equipment.

When the user equipment does not receive any message from the network device within a specified time, the user equipment will randomly retreat data after a period of time, that is, adopt asynchronous HARQ, thereby reducing the probability of retransmission collision.

It should be noted that the above FIG. 4 only schematically illustrates the embodiment of the present invention, but the present invention is not limited thereto. For example, the order of execution between the various steps may be appropriately adjusted (for example, the order of steps 402 to 405 is adjusted, or steps 402 to 405 are performed in parallel, etc.), and other steps may be added or reduced. Some steps. Those skilled in the art can appropriately modify the above based on the above contents, and are not limited to the above description of FIG.

FIG. 7 is another schematic diagram of a method for unlicensed transmission according to an embodiment of the present invention, which is schematically illustrated from the perspectives of a receiving end (eg, a network device) and a transmitting end (eg, a user equipment). As shown in FIG. 7, the method includes:

Step 701: The network device and the user equipment establish downlink synchronization.

Step 702: The user equipment sends data information to the network device.

In this embodiment, the user equipment may send data information to the network device in a manner of unauthorized transmission, where the data information includes a data payload (used to carry data that the user equipment needs to transmit), and demodulation parameters. a test signal (DMRS) and a retransmission indicator; the retransmission indicator is used to indicate whether the current data transmission is an initial transmission or a retransmission; the specific content of the data information can be referred to FIG.

In this embodiment, the UE may randomly select or use a predetermined multiple access (MA, Multiple Access) signature for data transmission, where the MA signature may be a spreading sequence or an interleaving manner, etc., specifically The multiple access technology adopted determines the relevant multiple access technology.

As shown in FIG. 7, the method may further include:

Step 703: The network device detects the user equipment based on the DMRS and demodulates the data information.

Step 704: The network device sends feedback information to the user equipment. For specific content of the feedback information, refer to FIG. 5 or FIG. 6.

Step 705: The user equipment demodulates the set identifier (set ID) in the feedback information. If the demodulated set ID is consistent with the set to which the user equipment belongs, the user equipment continues to perform step 706, otherwise the user equipment stops. Demodulation of the feedback information.

Thus, by ranking the identity of the user equipment, the search space of the user equipment can be reduced. And the user equipment first demodulates only the set ID, and performs subsequent demodulation in the case that the demodulated set ID and the set to which the user equipment belongs are consistent, which can reduce the energy consumption of the user equipment.

Step 706: The user equipment demodulates the other part of the feedback information.

In this embodiment, if the demodulated set ID is consistent with the set to which the user equipment belongs, the user equipment may continue to demodulate the set UE ID and the ACK/NACK; if the set of the feedback information is demodulated The UE ID is also consistent with the user equipment, and the feedback information may be determined to be information sent to the user equipment.

If the feedback information is demodulated to include an ACK, the user equipment can determine that the transmitted data information has been correctly received by the network device. The user equipment can also determine whether new data transmission is needed according to the state of the buffer.

If the feedback information is demodulated to include a NACK and a corresponding CC/IR indication, the user equipment can determine that the transmitted data information is not correctly received by the network device. The user equipment may also perform corresponding retransmission according to the HARQ combining manner indicated by the CC/IR. Among them, in order to reduce the probability of retransmission conflicts, the resources used for retransmission (regardless of the first few times) can be configured separately from the originally transmitted resources.

It should be noted that the above FIG. 7 only schematically illustrates the embodiment of the present invention, but the present invention is not limited thereto. For example, the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced. Those skilled in the art can appropriately modify according to the above, and It is not limited to the description of the above-mentioned FIG.

It can be seen from the foregoing embodiment that the data information sent by the user equipment includes not only the data payload and the demodulation reference signal, but also an indicator for indicating whether the current data transmission is an initial transmission or a retransmission. Thus, the network device can distinguish between the initial transmission and the retransmission under the unlicensed transmission in a simple manner without reducing the usage rate of the limited resources.

Example 2

The embodiment of the present invention provides a method for transmitting an unlicensed transmission, which is applied to the side of a transmitting end (for example, a user equipment), and the same content as that of Embodiment 1 is not described herein.

FIG. 8 is a schematic diagram of a method for user-delivered transmission according to an embodiment of the present invention, which is schematically illustrated from the perspective of a sending end (for example, a user equipment); as shown in FIG. 8, the method includes:

Step 801: The user equipment sends, to the network device, data information including a data payload and a demodulation reference signal, where the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

Step 802: The user equipment receives feedback information from the network device within a prescribed time.

In this embodiment, if the feedback information is not received within the specified time, the user equipment randomly retreats the data information after a period of time.

In this embodiment, all the user equipments in the cell are divided into multiple groups, each group is divided into multiple sets, each set includes multiple user equipments; and the identifier of each user equipment is a hierarchical identifier. , may include a collection identifier and a user equipment identifier within the collection.

In this embodiment, the feedback information may include: confirmation information or non-confirmation information, and the set identifier of the user equipment and the user equipment identifier in the set. In the case that the feedback information includes the non-confirmation information, the feedback information may further include retransmission mode information, where the retransmission mode information is used to indicate whether the retransmission is an additional merge mode or an increase The redundancy mode is used; and in the case that the retransmission adopts the incremental redundancy mode, the retransmission mode information may also be used to indicate that the first redundancy version is adopted.

FIG. 9 is another schematic diagram of a method for user-delivered transmission according to an embodiment of the present invention, which is schematically illustrated from the perspective of a sending end (for example, a user equipment); as shown in FIG. 9, the method includes:

Step 901: The user equipment sends data information including a data payload and a demodulation reference signal to the network device, where the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

Step 902: The user equipment determines whether feedback information from the network device is received within a specified time; if yes, step 903 is performed, and if not, step 910 is performed.

Step 903: The user equipment demodulates the set identifier in the feedback information.

Step 904: The user equipment determines whether the demodulated set identifier is consistent with the set identifier of the user equipment; if yes, step 905 is performed; otherwise, the current demodulation is ended;

In this embodiment, the user equipment may first demodulate the set identifier included in the feedback information; and stop if the demodulated set identifier is inconsistent with the set identifier of the user equipment. Demodulating the feedback information.

Step 905: The user equipment demodulates other parts in the feedback information.

In this embodiment, if the demodulated set identifier is consistent with the set identifier of the user equipment, the other portions of the feedback information are continuously demodulated.

Step 906, the user equipment determines whether the feedback information is included in the feedback information; if yes, step 907 is performed, otherwise step 908 is performed;

Step 907: The user equipment may determine that the data information is correctly received.

In this embodiment, in a case that the feedback information includes the confirmation information, the user equipment may determine that the data information is correctly received, and may determine whether to transmit new data according to a state of the user equipment buffer. .

Step 908: The user equipment determines that the data information is not correctly received.

Step 909: The user equipment performs corresponding retransmission according to the retransmission mode information.

In this embodiment, in a case where the feedback information includes the non-confirmation information and the retransmission mode information, the user equipment may perform corresponding according to the retransmission mode information demodulated in step 905. Retransmission. In addition, retransmission may also be performed according to predetermined retransmission mode information (for example, the transmitting end and the receiving end have previously agreed).

Step 910: The user equipment re-transmits the data information after randomly retreating for a period of time.

It is to be noted that the above description is only illustrative of the embodiments of the present invention, but the present invention is not limited thereto. For example, the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced. Those skilled in the art can appropriately modify the above based on the above contents, and are not limited to the description of the above drawings.

In this embodiment, the resources for the initial transmission and the resources for the retransmission may be separately configured, that is, different transmission resources are used in the initial transmission and the retransmission.

In this embodiment, there may be a correspondence between the demodulation reference signal and the identifier of the user equipment, so that The network device detects the user equipment based on the demodulation reference signal.

Example 3

The embodiment of the invention provides a receiving device for the unlicensed transmission. The receiving device may be a receiving end (for example, a network device), or may be a component or component configured on the receiving end. The same contents of the third embodiment and the first embodiment will not be described again.

FIG. 10 is a schematic diagram of a receiving apparatus for unauthorized transmission according to an embodiment of the present invention. As shown in FIG. 10, a receiving apparatus 1000 for unauthorized transmission includes:

a data receiving unit 1001, which receives data information from a user equipment including a data payload and a demodulation reference signal; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

a user detecting unit 1002 that performs user detection based on the demodulation reference signal;

a data demodulation unit 1003 that demodulates the data information based on the demodulation reference signal;

The information feedback unit 1004 sends feedback information to the user equipment according to the result of the user detection and the result of demodulating the data information.

In this embodiment, in the case that the current data transmission is a retransmission, the indicator may also be used to indicate that the current data transmission is the first retransmission.

In this embodiment, all user equipments in a cell are divided into multiple groups, each group is divided into multiple sets, each set includes multiple user equipments; and each user equipment has a hierarchical identifier, including The collection identifier and the user equipment identifier within the collection.

In this embodiment, the feedback information sent by the information feedback unit 1004 may include: confirmation information or non-confirmation information, and the set identifier of the user equipment and the user equipment identifier in the set.

In this embodiment, in the case that the information feedback unit 1004 feeds back the non-confirmation information, the feedback information may further include retransmission mode information, where the retransmission mode information is used to indicate that the retransmission is an append The merge mode is also incremental redundancy. In the case that the retransmission adopts the incremental redundancy mode, the retransmission mode information may also be used to indicate that the first redundancy version is adopted.

In this embodiment, there may be a corresponding relationship between the demodulation reference signal and the identifier of the user equipment; And the user detecting unit 1002 can detect the user equipment based on the correspondence and the received demodulation reference signal.

In the case that both the user equipment is detected and the data information is demodulated, the information feedback unit 1004 feeds back the confirmation information to the user equipment; the user equipment is detected but the data is not demodulated. In the case of information, the information feedback unit 1004 feeds back the non-confirmation information to the user equipment, or feeds back the non-confirmation information and the retransmission mode information. The information feedback unit 1004 does not send the feedback information to the user equipment if the user equipment is not detected.

It is to be noted that the above description has been made only for the respective components or modules related to the present invention, but the present invention is not limited thereto. The receiving device 1000 for unlicensed transmission may also include other components or modules, and for the specific content of these components or modules, reference may be made to related art.

Example 4

The embodiment of the invention provides a sending device for the unlicensed transmission. The sending device may be a sending end (for example, a user equipment), or may be a certain component or components configured on the transmitting end. The same contents of the fourth embodiment as those of the first and second embodiments will not be described again.

FIG. 11 is a schematic diagram of a sending apparatus for unauthorized transmission according to an embodiment of the present invention. As shown in FIG. 11, a transmitting apparatus 1100 for unauthorized transmission includes:

a data transmitting unit 1101, which transmits data information including a data payload and a demodulation reference signal to the network device; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

The information receiving unit 1102 receives feedback information from the network device within a prescribed time.

In this embodiment, in a case where the information receiving unit 1102 does not receive the feedback information within the predetermined time, the data transmitting unit 1101 randomly retreats the data information after a period of time.

In this embodiment, all user equipments in a cell are divided into multiple groups, each group is divided into multiple sets, each set includes multiple user equipments; and the identifier of each user equipment includes a set identifier. User device ID with the collection.

In this embodiment, the feedback information may include: confirmation information or non-confirmation information, and user setting The set identifier of the backup and the user equipment identifier in the set.

In the case that the feedback information includes the non-confirmation information, the feedback information may further include retransmission mode information, where the retransmission mode information is used to indicate whether the retransmission is an additional merge mode or an increase The redundancy mode is used; and in the case that the retransmission adopts the incremental redundancy mode, the retransmission mode information may also be used to indicate that the first redundancy version is adopted.

As shown in FIG. 11, the transmitting apparatus 1100 for unauthorized transmission may further include:

The information demodulating unit 1103 demodulates the feedback information.

The information demodulation unit 1103 may be specifically configured to: demodulate the set identifier included in the feedback information; and demodulate the set identifier to a user equipment corresponding to the data transmission device. If the set identifiers are inconsistent, the demodulation of the feedback information is stopped; if the demodulated set identifiers are consistent with the set identifiers of the user equipments corresponding to the data transmission device, the feedback is continued. The rest of the information is demodulated.

In this embodiment, in a case where the feedback information includes the confirmation information, the data sending unit 1101 may further determine whether to transmit new data according to a state of the user equipment buffer; where the feedback information includes the non- In the case of the acknowledgement information and the retransmission mode information, the data transmitting unit 1101 may perform corresponding retransmission according to the retransmission mode information.

In this embodiment, the resources for the initial transmission and the resources for the retransmission may be separately configured, and the data sending unit 1101 may use different transmission resources in the initial transmission and the retransmission.

In this embodiment, a correspondence may exist between the demodulation reference signal and the identifier of the user equipment, so that the network device detects the user equipment based on the demodulation reference signal.

It is to be noted that the above description has been made only for the respective components or modules related to the present invention, but the present invention is not limited thereto. The transmitting device 1100 for unauthorized transmission may also include other components or modules, and for the specific content of these components or modules, reference may be made to related art.

Example 5

The embodiment of the present invention further provides a communication system, which can refer to FIG. 1 and has the same contents as Embodiments 1 to 4. No longer. In this embodiment, the communication system 100 can include:

a network device 101 configured with the receiving device 1000 for unlicensed transmission as described in Embodiment 2;

User equipment 102, which is configured with a transmitting device 1100 for unlicensed transmission as described in embodiment 4.

The embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.

FIG. 12 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in FIG. 12, network device 1200 can include a processor 1210 (eg, a central processing unit CPU) and a memory 1220; memory 1220 is coupled to processor 1210. The memory 1220 can store various data; in addition, a program 1230 for information processing is stored, and the program 1230 is executed under the control of the processor 1210.

Wherein, the processor 1210 can be configured to implement the functionality of the receiving device 1000 for unauthorized transfer. For example, the processor 1210 can be configured to execute the program 1230 to: receive data information from the user equipment including the data payload and the demodulation reference signal; wherein the data information further includes instructions for indicating the current data transmission Is an indicator of initial transmission or retransmission; performing user detection based on the demodulation reference signal; demodulating the data information based on the demodulation reference signal; and solving the data information according to a result detected by the user The result of the tuning sends feedback information to the user equipment.

In addition, as shown in FIG. 12, the network device 1200 may further include: a transceiver 1240, an antenna 1250, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the network device 1200 does not have to include all the components shown in FIG. 12; in addition, the network device 1200 may further include components not shown in FIG. 12, and reference may be made to the prior art.

The embodiment of the present invention further provides a user equipment, but the present invention is not limited thereto, and may be other devices.

FIG. 13 is a schematic diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 13, the user equipment 1300 can include a processor 1310 and a memory 1320; the memory 1320 stores data and programs and is coupled to the processor 1310. It should be noted that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

Among other things, the processor 1310 can be configured to implement the functions of the transmitting device 1100 for unauthorized transfer. For example, the processor 1310 can be configured to perform control of transmitting data information including a data payload and a demodulation reference signal to the network device; wherein the data information further includes indicating whether the current data transmission is initial transmission or heavy The transmitted indicator; receiving feedback information from the network device within a specified time.

As shown in FIG. 13, the user equipment 1300 may further include: a communication module 1330, an input unit 1340, Display 1350, power supply 1360. The functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1300 does not have to include all the components shown in FIG. 13, and the above components are not required; in addition, the user equipment 1300 may further include components not shown in FIG. There are technologies.

The embodiment of the present invention further provides a computer readable program, wherein the program causes the receiving end or a network device (for example, a base station) to execute an embodiment when the program is executed in a receiving end or a network device (for example, a base station) A receiving method for grant-free transmission as described in 1.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a receiving end or a network device (for example, a base station) to perform the receiving method for unlicensed transmission described in Embodiment 1 .

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a sending end or a user equipment, the program causes the sending end or user equipment to perform the exemption authorization described in Embodiment 3 The method of sending the transmission.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a transmitting end or a user equipment to perform the transmitting method for the unauthorized transfer described in Embodiment 3.

The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in FIG. 10 and/or one or more combinations of functional block diagrams (eg, data receiving unit, data demodulating unit, information feedback unit, etc.) may correspond to a computer Each software module of the program flow may also correspond to each hardware module. These software modules may correspond to the respective steps shown in FIG. 2, respectively. These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).

The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor. Processor And the storage medium can be located in the ASIC. The software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a larger capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.

One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. An application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that A person skilled in the art can make various modifications and changes to the present invention within the scope of the present invention.

With regard to the embodiments including the above embodiments, the following supplementary notes are also disclosed:

(Supplement 1) A receiving device for unauthorized transmission, comprising:

a data receiving unit that receives data information from the user equipment including a data payload and a demodulation reference signal;

An information feedback unit that sends feedback information to the user equipment according to a result of the user detection and a result of demodulating the data information;

All the user equipments in the cell are divided into multiple groups, each group is divided into multiple sets, each set includes multiple user equipments; and each user equipment has a set identifier and a user equipment in the set. The rating identifier of the logo.

(Supplement 2) The receiving device according to the supplementary note 1, wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission.

(Supplementary Note 3) The receiving apparatus according to the supplementary note 2, in the case where the current data transmission is a retransmission, the indicator is further used to indicate that the current data transmission is the first retransmission.

(Attachment 4) The receiving device according to the supplementary note 1, wherein the feedback information sent by the information feedback unit includes: confirmation information or non-confirmation information, and the set identifier of the user equipment and the User equipment ID within the collection.

(Attachment 5) The receiving device according to the supplementary note 4, wherein, in the case that the information feedback unit feeds back the non-confirmation information, the feedback information further includes retransmission mode information; wherein the retransmission mode The information is used to indicate whether the retransmission is in an additional merge mode or an incremental redundancy mode.

(Attachment 6) The receiving apparatus according to the supplementary note 5, wherein, in the case where the retransmission adopts the incremental redundancy mode, the retransmission mode information is further used to indicate that the redundancy is used version.

(Attachment 7) The receiving device according to the supplementary note 1, wherein a decoupling reference signal has a correspondence relationship with an identifier of the user equipment; and the user detecting unit is based on the correspondence and received The demodulation reference signal detects the user equipment.

(Attachment 8) The receiving device according to the seventh aspect, wherein, in a case where the user detecting unit detects the user equipment and the data demodulating unit demodulates the data information, the information The feedback unit feeds back confirmation information to the user equipment;

And when the user detecting unit detects the user equipment but the data demodulating unit does not demodulate the data information, the information feedback unit feeds back the non-confirmation information to the user equipment, or feeds back the Non-confirmation information and retransmission method information.

(Attachment 9) The receiving device according to the seventh aspect, wherein the information feedback unit does not transmit the feedback information to the user equipment if the user detecting unit does not detect the user equipment .

(Supplementary Note 10) A transmitting apparatus for unauthorized transmission, comprising:

a data transmitting unit that transmits data information including a data payload and a demodulation reference signal to the network device;

An information receiving unit that receives feedback information from the network device within a prescribed time;

The transmitting device according to supplementary note 10, wherein, in a case where the information receiving unit does not receive the feedback information within the predetermined time, the data transmitting unit randomly retreats for a period of time The data information is resent afterwards.

(Supplementary note 12) The transmitting device according to the supplementary note 10, wherein the data information further includes Whether the secondary data transmission is an indicator of initial transmission or retransmission;

(Supplementary note 13) The transmitting device according to the supplementary note 10, wherein the feedback information comprises: confirmation information or non-confirmation information, and the set identifier of the user equipment and the user equipment identifier in the set.

(Attachment 14) The transmitting device according to the supplementary note 13, wherein, in the case where the feedback information includes the non-confirmation information, the feedback information further includes retransmission mode information; wherein the retransmission mode information And the method for indicating whether the retransmission is in an additional merge mode or an incremental redundancy mode; and in the case that the retransmission adopts the incremental redundancy mode, the retransmission mode information is further used to indicate that the retransmission mode is used Secondary redundancy version.

(Supplement 15) The transmitting device according to the supplementary note 13, wherein the transmitting device further comprises:

An information demodulating unit that demodulates the feedback information.

(Attachment 16) The transmitting device according to the above, wherein the information demodulating unit is configured to: demodulate the set identifier included in the feedback information;

And stopping, when the demodulated set identifier is different from the set identifier of the user equipment corresponding to the sending device, demodulating the feedback information;

And if the demodulated set identifier is consistent with the set identifier of the user equipment corresponding to the sending device, further demodulating the other portion of the feedback information.

(Attachment 17) The transmitting device according to the supplementary note 14, wherein, in the case where the feedback information includes the confirmation information, the information receiving unit is further configured to determine that the data information is correct by the network device Receiving, and the data sending unit is further configured to determine whether to transmit new data according to a state of the user equipment buffer.

(Attachment 18) The transmitting device according to the fourteenth aspect, wherein, in the case where the feedback information includes the non-confirmation information and the retransmission mode information, the information receiving unit is further configured to determine the The data information is not correctly received by the network device, and the data sending unit is further configured to perform corresponding retransmission according to the retransmission mode information.

(Supplementary note 19) The transmitting device according to the supplementary note 10, wherein the resource for the initial transmission and the resource for the retransmission are separately configured, and the data transmitting unit is in the initial transmission and the Different transmission resources are used when retransmitting.

(Attachment 20) The transmitting device according to the supplementary note 10, wherein the demodulation reference signal has a correspondence relationship with the identifier of the user equipment, so that the network device is based on the demodulation reference signal and the corresponding The relationship detects the user equipment.

Claims

A receiving device for unauthorized transmission, comprising:

a data receiving unit that receives data information from the user equipment including a data payload and a demodulation reference signal; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

a user detecting unit that performs user detection based on the demodulation reference signal;

a data demodulation unit that demodulates the data information based on the demodulation reference signal;

An information feedback unit that sends feedback information to the user equipment according to the result of the user detection and the result of demodulating the data information.
The receiving apparatus according to claim 1, wherein in the case where the current data transmission is a retransmission, the indicator is further used to indicate that the current data transmission is a retransmission of the number of times.
The receiving apparatus according to claim 1, wherein all user equipments in the cell are divided into a plurality of groups, each group is divided into a plurality of sets, each set includes a plurality of user equipments; and each user equipment There is a hierarchical identifier including a collection identifier and a user equipment identifier within the collection.
The receiving apparatus according to claim 3, wherein the feedback information comprises: confirmation information or non-confirmation information, and the set identifier of the user equipment and the user equipment identifier in the set.
The receiving apparatus according to claim 4, wherein, in a case where the information feedback unit feeds back the non-confirmation information, the feedback information further includes retransmission mode information; wherein the retransmission mode information is used to indicate Whether the retransmission is an additional merge or an incremental redundancy.
The receiving apparatus according to claim 5, wherein, in the case that the retransmission adopts the incremental redundancy mode, the retransmission mode information is further used to indicate that the first redundancy version is adopted.
The receiving apparatus according to claim 1, wherein a correspondence relationship exists between said demodulation reference signal and an identification of said user equipment; and said user detecting unit is based on said correspondence relationship and said demodulation received The user equipment is detected by a reference signal.
The receiving apparatus according to claim 7, wherein, in a case where the user detecting unit detects the user equipment and the data demodulating unit demodulates the data information, the information feedback unit User equipment feedback confirmation information;

And when the user detecting unit detects the user equipment but the data demodulating unit does not demodulate the data information, the information feedback unit feeds back the non-confirmation information to the user equipment, or feeds back the Non-confirmation information and retransmission method information.
The receiving apparatus according to claim 7, wherein the information feedback unit does not transmit the feedback information to the user equipment if the user detecting unit does not detect the user equipment.
A transmitting device for unauthorized transmission, comprising:

a data sending unit that transmits data information including a data payload and a demodulation reference signal to the network device; wherein the data information further includes an indicator for indicating whether the current data transmission is an initial transmission or a retransmission;

An information receiving unit that receives feedback information from the network device within a prescribed time.
The transmitting apparatus according to claim 10, wherein, in a case where the information receiving unit does not receive the feedback information within the predetermined time, the data transmitting unit randomly retreats the data after a period of time information.
The transmitting apparatus according to claim 10, wherein all user equipments in the cell are divided into a plurality of groups, each group is divided into a plurality of sets, each set includes a plurality of user equipments; and each user equipment There is a hierarchical identifier including a collection identifier and a user equipment identifier within the collection.
The transmitting apparatus according to claim 12, wherein the feedback information comprises: confirmation information or non-confirmation information, and the set identifier of the user equipment and the user equipment identifier in the set.
The transmitting apparatus according to claim 13, wherein, in a case where the feedback information includes the non-confirmation information, the feedback information further includes retransmission mode information; wherein the retransmission mode information is used to indicate the The retransmission mode is used to indicate that the first redundancy version is used, in the case that the retransmission adopts the incremental redundancy mode.
The transmitting device according to claim 13, wherein the transmitting device further comprises:

An information demodulating unit that demodulates the feedback information.
The transmitting device according to claim 15, wherein the information demodulating unit is specifically configured to: demodulate the set identifier included in the feedback information;

And stopping, when the demodulated set identifier is different from the set identifier of the user equipment corresponding to the sending device, demodulating the feedback information;

And if the demodulated set identifier is consistent with the set identifier of the user equipment corresponding to the sending device, further demodulating the other portion of the feedback information.
The transmitting device according to claim 14, wherein, in a case where the feedback information includes the confirmation information, the information receiving unit is further configured to determine that the data information is correctly received by the network device, and And the data sending unit is further configured to determine whether to transmit new data according to a state of the user equipment buffer.
The transmitting apparatus according to claim 14, wherein, in a case where the feedback information includes the non-confirmation information and the retransmission mode information, the information receiving unit is further configured to determine that the data information is not The network device is correctly received, and the data sending unit is further configured to perform corresponding retransmission according to the retransmission mode information.
The transmitting apparatus according to claim 10, wherein resources for said initial transmission and resources for said retransmission are separately configured, said data transmitting unit being used at said initial transmission and said retransmission Different transmission resources.
A communication system, the communication system comprising:

a network device comprising the receiving device for unlicensed transmission according to claim 1;

User equipment comprising the transmitting device for unlicensed transmission according to claim 10.