Communication method, device, and storage medium

Abstract

The embodiment of the application provides a communication method, device and storage medium, a first terminal device receives configuration information sent by a network device, the network device can configure sidelink transmission resources and transmission resources corresponding to PUCCH for the first terminal device through the configuration information, the first terminal device can send multiple sidelink data to a second terminal device on the sidelink transmission resources configured by the network device, and receive sidelink feedback information corresponding to the multiple sidelink data from the second terminal device, the number of bits corresponding to the sidelink feedback information is greater than 1, when the first terminal device reports the sidelink feedback information to the network device through the transmission resources corresponding to PUCCH configured by the network device, one PUCCH can bear multiple bits of sidelink feedback information, thereby improving the utilization rate of the transmission resources corresponding to PUCCH.

Description

[0001] This application is a divisional application of the PCT national stage application of the application date of January 19, 2020, national application number 202080075042.5. TECHNICAL FIELD

[0002] Embodiments of the present application relate to communication technology, and in particular to a communication method, device and storage medium. BACKGROUND

[0003] In a vehicle-to-everything system, a network device can configure a sidelink resource for a vehicle-mounted device, so that the vehicle-mounted device can send sidelink data to other vehicle-mounted devices using the sidelink resource, and the other vehicle-mounted devices can also send sidelink feedback information to the vehicle-mounted device according to whether the sidelink data is successfully received, and the vehicle-mounted device can also report the sidelink feedback information to the network device.

[0004] In the prior art, the vehicle-mounted device can report the sidelink feedback information to the network device through a physical uplink control channel (PUCCH), but the resource overhead of the PUCCH is large. SUMMARY

[0005] Embodiments of the present application provide a communication method, device and storage medium to improve the utilization rate of the transmission resource corresponding to the PUCCH.

[0006] In a first aspect, embodiments of the present application can provide a communication method, which comprises:

[0007] The first terminal device receives configuration information sent by the network device, and the configuration information is used to configure a sidelink transmission resource and a transmission resource corresponding to a physical uplink control channel (PUCCH);

[0008] The first terminal device sends a plurality of sidelink data to a second terminal device on the sidelink transmission resource;

[0009] The first terminal device receives sidelink feedback information corresponding to the plurality of sidelink data from the second terminal device;

[0010] The first terminal device sends the sidelink feedback information to the network device, and the sidelink feedback information is carried by the PUCCH.

[0011] In a second aspect, embodiments of the present application can provide a communication method, which comprises:

[0012] The network device sends configuration information to a first terminal device, and the configuration information is used to configure a sidelink transmission resource and a transmission resource corresponding to a physical uplink control channel (PUCCH);

[0013] The network device receives sidelink feedback information from the first terminal device, the sidelink feedback information is carried by the PUCCH, and the sidelink feedback information is sidelink feedback information corresponding to a plurality of sidelink data sent by the first terminal device to a second terminal device on the sidelink transmission resource.

[0014] In a third aspect, an embodiment of the present application can provide a terminal device, comprising: a receiving module and a sending module.

[0015] The receiving module is configured to receive configuration information sent by a network device, and the configuration information is used for configuring a sidelink transmission resource and a transmission resource corresponding to a physical uplink control channel (PUCCH).

[0016] The sending module is configured to send a plurality of sidelink data to other terminal devices on the sidelink transmission resource.

[0017] The receiving module is further configured to receive sidelink feedback information corresponding to the plurality of sidelink data from the other terminal devices.

[0018] The sending module is further configured to send the sidelink feedback information to the network device, and the sidelink feedback information is carried by the PUCCH.

[0019] In a fourth aspect, an embodiment of the present application can provide a network device, comprising:

[0020] A sending module is configured to send configuration information to a first terminal device, and the configuration information is used for configuring a sidelink transmission resource and a transmission resource corresponding to a physical uplink control channel (PUCCH).

[0021] A receiving module is configured to receive sidelink feedback information from the first terminal device, and the sidelink feedback information is carried by the PUCCH, and the sidelink feedback information is sidelink feedback information corresponding to a plurality of sidelink data sent by the first terminal device to a second terminal device on the sidelink transmission resource.

[0022] In a fifth aspect, an embodiment of the present application can provide a terminal device, comprising:

[0023] A processor, a memory, and a communication interface.

[0024] The memory stores computer execution instructions.

[0025] The processor executes the computer execution instructions stored in the memory, so that the processor executes the method in the first aspect.

[0026] In a sixth aspect, an embodiment of the present application can provide a network device, comprising:

[0027] A processor, a memory, and a communication interface.

[0028] The memory stores computer-executable instructions;

[0029] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to the second aspect.

[0030] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions, when executed by a processor, implement the method according to the first aspect or the second aspect.

[0031] In an eighth aspect, an embodiment of the present application provides a chip, which comprises a processor configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to the first aspect or the second aspect.

[0032] In a ninth aspect, an embodiment of the present application provides a computer program product, which comprises computer program instructions, and the computer program instructions cause a computer to execute the method according to the first aspect or the second aspect.

[0033] In a tenth aspect, an embodiment of the present application further provides a computer program, which causes a computer to execute the method according to the first aspect or the second aspect.

[0034] The communication method, device and storage medium provided by the embodiments of the present application can receive, by a first terminal device, configuration information sent by a network device, and the network device can configure sidelink transmission resources and transmission resources corresponding to PUCCH for the first terminal device. The first terminal device can send multiple sidelink data to a second terminal device on the sidelink transmission resources configured by the network device, and receive sidelink feedback information corresponding to the multiple sidelink data from the second terminal device. The number of bits corresponding to the sidelink feedback information is greater than 1. When the first terminal device reports the sidelink feedback information to the network device through the transmission resources corresponding to PUCCH configured by the network device, one PUCCH can carry multiple bits of sidelink feedback information, thereby improving the utilization rate of the transmission resources corresponding to PUCCH. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0036] Figure 1 A schematic diagram of a communication system provided by the present application is shown.

[0037] Figure 2 a schematic diagram of sidelink transmission in the prior art;

[0038] Figure 3 a schematic diagram of sidelink transmission in the prior art;

[0039] Figure 4 a schematic diagram of unicast in the prior art;

[0040] Figure 5 a schematic diagram of groupcast in the prior art;

[0041] Figure 6 a schematic diagram of broadcast in the prior art;

[0042] Figure 7 a schematic diagram of sidelink feedback in the prior art;

[0043] Figure 8 a schematic diagram of an application scenario provided by the present application;

[0044] Figure 9 a flowchart of a communication method provided by the present application;

[0045] Figure 10 a schematic diagram of sidelink transmission resource provided by the present application;

[0046] Figure 11 a schematic diagram of another sidelink transmission resource provided by the present application;

[0047] Figure 12 a schematic diagram of a first feedback information field provided by the present application;

[0048] Figure 13 a schematic diagram of another first feedback information field provided by the present application;

[0049] Figure 14 a schematic diagram of another application scenario provided by the present application;

[0050] Figure 15 a schematic diagram of another first feedback information field provided by the present application;

[0051] Figure 16 a schematic diagram of yet another application scenario provided by the present application;

[0052] Figure 17 a schematic diagram of yet another first feedback information field provided by the present application;

[0053] Figure 18 a schematic diagram of a structure of a terminal device provided by the present application;

[0054] Figure 19 A structure schematic diagram of a network device provided by the present application is shown in the following figure;

[0055] Figure 20 Another structure schematic diagram of a terminal device provided by the present application is shown in the following figure;

[0056] Figure 21 Another structure schematic diagram of a network device provided by the present application is shown in the following figure. DETAILED DESCRIPTION

[0057] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0058] The terms "first", "second", and the like in the specification of the embodiments of the present application, claims, and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units need not be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or device.

[0059] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0060] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a next generation communication system, or other communication systems, and the like.

[0061] Generally, a conventional communication system supports a limited number of connections, which is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), and Vehicle to Vehicle (V2V) communication, and the like. The embodiments of the present application can also be applied to these communication systems.

[0062] Exemplarily, the communication system 100 to which embodiments of the present application apply is shown in Figure 1 The communication system 100 can include a network device 110, which can be a device communicating with a terminal device 120 (or called a communication terminal, a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 can be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (CRAN), or the network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (PLMN), etc.

[0063] The communication system 100 further includes at least one terminal device 120 located within the coverage area of the network device 110. As used herein, a "terminal device" includes, but is not limited to, an apparatus configured to receive / transmit communication signals via a wired line connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or a wireless interface, such as for a cellular network, a WLAN, a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal device; and / or an Internet of Things (IoT) device. A terminal device configured to communicate over a wireless interface can be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine a cellular radiotelephone with data processing, facsimile, and data communications capabilities; Personal Digital Assistant (PDA) devices that can include a radiotelephone, a pager, Internet / Intranet access, Web browser, organizer, calendar, and / or a Global Positioning System (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal device can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. An access terminal can be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA device with wireless communication functionality, a handheld device having wireless communication functionality, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

[0064] Optionally, D2D communication can be performed between the terminal devices 120.

[0065] Optionally, the 5G system can also be referred to as an NR system, or the 5G network can also be referred to as an NR network.

[0066] Figure 1 Exemplarily, one network device and two terminal devices are shown. Optionally, the communication system 100 can include multiple network devices and each network device can include other number of terminal devices within its coverage, which are not limited in the embodiments of the present application.

[0067] In Figure 1 , the network device can be an access device, for example, an access device in an NR-U system, such as an NR base station (gNB) or a small station, a micro station of 5G, a relay station, a transmission and reception point (TRP), a road side unit (RSU), etc.

[0068] The terminal device can also be referred to as a mobile terminal, a UE, an access terminal, a user unit, a user station, a mobile station, a mobile station, a user terminal, a terminal, a wireless communication device, a user agent or a user device. Specifically, it can be a smartphone, a cellular phone, a cordless phone, a PDA device, a handheld device with wireless communication function or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, etc. In the embodiments of the present application, the terminal device has an interface for communicating with the network device (for example, a cellular network).

[0069] Optionally, the communication system 100 can also include a network controller, a mobile management entity and other network entities, which are not limited in the embodiments of the present application.

[0070] It should be understood that the devices with communication function in the network / system in the embodiments of the present application can be referred to as communication devices. For example, Figure 1 The communication system 100 shown is an example, the communication devices can include network devices 110 and terminal devices 120 with communication function, the network devices 110 and the terminal devices 120 can be the specific devices described above, which will not be described here; the communication devices can also include other devices in the communication system 100, such as network controllers, mobile management entities and other network entities, which are not limited in the embodiments of the present application.

[0071] It should be understood that the terms "system" and "network" are often used interchangeably in this paper. The term "and / or" in this paper is only used to describe the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects before and after it.

[0072] The method of the embodiments of the present application can be applied to, for example, Figure 1The communication system shown can also be applied to other communication scenarios. D2D is a sidelink (SL) transmission technology, which can be applied in a vehicle-to-everything (V2X) system. Specifically, in the V2X system, the transmission mode between terminal devices includes two modes: in the first mode, as shown in Figure 2 Specifically, the network device, for example, the base station 20, allocates sidelink transmission resources to the terminal device A in the vehicle 21 and / or the terminal device B in the vehicle 22 through the downlink, respectively. Specifically, the base station 20 can configure the terminal device with a single transmission sidelink transmission resource, or configure the terminal device with a semi-static sidelink transmission resource. The terminal device A and the terminal device B transmit sidelink data on the sidelink according to the sidelink transmission resources allocated by the base station 20, where the terminal device in the vehicle can be a vehicle-mounted device. In the second mode, as shown in Figure 3 The terminal device C in the vehicle 31 selects a sidelink transmission resource from a resource pool and transmits sidelink data to the terminal device D in the vehicle 32 according to the sidelink transmission resource. The first mode is described illustratively below.

[0073] In NR-V2X, the terminal device can use the sidelink transmission resource for unicast, groupcast and broadcast transmission.

[0074] For unicast transmission, the receiving end is one terminal device, as shown in Figure 4 The first terminal device in the vehicle 41 transmits sidelink data to the second terminal device in the vehicle 42.

[0075] For groupcast transmission, the receiving end is multiple terminal devices in a groupcast group, as shown in Figure 5 The terminal devices included in the vehicle 51, the vehicle 52, the vehicle 53 and the vehicle 54 form a groupcast group. When the terminal device included in the vehicle 51 transmits sidelink data, the terminal devices included in the vehicle 52, the vehicle 53 and the vehicle 54 can receive the sidelink data.

[0076] For broadcast transmission, the receiving end can be any terminal device, as shown in Figure 6 When the terminal device included in the vehicle 61 transmits sidelink data, other terminal devices around the vehicle 61, for example, the terminal devices included in the vehicle 62, the vehicle 63, the vehicle 64, the vehicle 65, the vehicle 66 and the vehicle 67 can receive the sidelink data.

[0077] The embodiments of the present application are illustratively described taking unicast as an example. For example, in Figure 4Based on this, after the first terminal device in vehicle 41 sends lateral travel data to the second terminal device in vehicle 42, the second terminal device can also send lateral travel feedback information to the first terminal device, such as... Figure 7 As shown, the sidelink feedback information is used to indicate whether the second terminal device has successfully received the sidelink data. Specifically, the sidelink feedback information can be carried in a sidelink feedback channel, which can be a Physical Sidelink Feedback Channel (PSFCH). Specifically, the sidelink feedback information can be Hybrid Automatic Repeat reQuest (HARQ) feedback information. The first terminal device can determine whether it needs to retransmit the sidelink data to the second terminal device based on the HARQ feedback information. In some cases, sidelink feedback can also be activated or deactivated. For example, when sidelink feedback is activated, the receiving end sends sidelink feedback information to the sending end after receiving sidelink data. If sidelink feedback is deactivated, the receiving end does not need to send sidelink feedback information to the sending end after receiving sidelink data, but the sending end can retransmit the data using a blind retransmission method. For example, the sending end can retransmit each sidelink data K times, instead of deciding whether to retransmit the data based on the sidelink feedback information sent by the receiving end.

[0078] Understandably, since the first mode, as described above, involves the network device configuring sideline transmission resources for the terminal device, when the terminal device retransmits sideline data, the network device also needs to configure the necessary sideline transmission resources (i.e., retransmission resources) for the terminal device to retransmit the sideline data. Therefore, the sending end can report the sideline feedback information sent by the receiving end to the network device, allowing the network device to determine whether to configure retransmission resources for the sending end based on the reported sideline feedback information. For example, Figure 8As shown, the first terminal device included in the vehicle 81 is a sending end, the second terminal device included in the vehicle 82 is a receiving end, and the network device 20 sends configuration information to the first terminal device, which can be used to configure the first terminal device with sidelink transmission resources and transmission resources corresponding to the PUCCH. Specifically, the sidelink transmission resources can be transmission resources corresponding to a physical sidelink shared channel (PSSCH). Specifically, the first terminal device sends sidelink data to the second terminal device on the transmission resources corresponding to the PSSCH, and the second terminal device sends sidelink feedback information to the first terminal device through the PSFCH, which is used to indicate whether the sidelink data is correctly received by the second terminal device. Further, the first terminal device can carry the sidelink feedback information in the PUCCH and report the sidelink feedback information to the network device 20 through the PUCCH, and the network device 20 determines whether to allocate retransmission resources to the first terminal device according to the sidelink feedback information. However, the PUCCH can only be used to carry 1-bit sidelink feedback information, and when the number of sidelink feedback information is large or the number of bits occupied by the sidelink feedback information is large, multiple PUCCHs are required to carry 1-bit sidelink feedback information, thereby causing the transmission resources corresponding to the PUCCH to be wasted. To solve this problem, the present embodiment provides a communication method, which will be introduced below in combination with specific embodiments.

[0079] Figure 9 A flowchart of a communication method provided in the present application is shown in FIG. 9. As shown in FIG. 9, the communication method includes the following steps: Figure 9

[0080] S901, the network device sends configuration information to the first terminal device, and correspondingly, the first terminal device receives the configuration information sent by the network device, and the configuration information is used to configure sidelink transmission resources and transmission resources corresponding to the PUCCH.

[0081] In the embodiment of the present application, the network device can configure the first terminal device with sidelink transmission resources in a dynamic scheduling (DG) manner, or the network device can configure the first terminal device with sidelink transmission resources in a configured grant (CG) manner.

[0082] ​In the DG mode, the first terminal device needs to send a scheduling request (SR) or a buffer status report (BSR) to the network device to request the network device to configure sidelink transmission resources for the first terminal device. In the DG mode, the network device can configure sidelink transmission resources and transmission resources corresponding to the PUCCH for the first terminal device through downlink control information (DCI).

[0083] The CG mode can be a semi-static configuration mode. Specifically, the CG mode can include two configuration grant modes: a first type of configured grant (type-1 configured grant) and a second type of configured grant (type-2 configured grant).

[0084] In the first type of configured grant, the network device can configure sidelink transmission resources for the first terminal device through radio resource control (RRC) signaling. Specifically, the RRC signaling can be used to configure time domain resources and frequency domain resources of the sidelink transmission resources, and the RRC signaling can also be used to configure demodulation reference signals (DMRSs), modulation and coding schemes (MCSs), and the like. In addition, the RRC signaling can also be used to configure transmission resources corresponding to the PUCCH. After the first terminal device receives the RRC signaling, the first terminal device can perform sidelink transmission according to the sidelink transmission resources configured by the RRC signaling.

[0085] In the second type of configured grant, the network device configures sidelink transmission resources for the first terminal device in two steps. Specifically, the network device first sends RRC signaling to the first terminal device, and the RRC signaling can include a period of time-frequency resources, a redundancy version, a number of retransmissions, a number of HARQ processes, and the like. Further, the network device sends DCI to the first terminal device, and the DCI can activate the sidelink transmission resources and be used to configure time domain resources, frequency domain resources, MCSs, and the like of the sidelink transmission resources. That is, when the first terminal device receives the RRC signaling, the first terminal device cannot immediately perform sidelink transmission, and needs to wait until the corresponding DCI activates the sidelink transmission resources and configures the corresponding sidelink transmission resources before performing sidelink transmission. In addition, the DCI can also be used to deactivate the sidelink transmission resources, for example, when the sidelink transmission resources are deactivated, the first terminal device will not be able to use the sidelink transmission resources for sidelink transmission. In addition, the DCI can also be used to configure transmission resources corresponding to the PUCCH.

[0086] The difference between the CG mode and the DG mode is that, if the network device configures a sidelink transmission resource for the first terminal device in the CG mode, the sidelink transmission resource is also called a sidelink configured grant (SL CG) transmission resource, and when the first terminal device has sidelink data to be transmitted, the first terminal device can directly use the sidelink transmission resource for transmission, without the need to send an SR or a BSR to the network device to request a sidelink transmission resource.

[0087] It can be seen that, in the DG mode, the configuration information sent by the network device to the first terminal device is specifically DCI. In the first type of configured grant in the CG mode, the configuration information sent by the network device to the first terminal device is specifically RRC signaling. In the second type of configured grant in the CG mode, the configuration information sent by the network device to the first terminal device is specifically DCI.

[0088] In the embodiments of the present application, the network device can configure a sidelink transmission resource for the first terminal device in the DG mode and / or the CG mode.

[0089] S902, the first terminal device sends a plurality of sidelink data to a second terminal device on the sidelink transmission resource.

[0090] S903, the first terminal device receives sidelink feedback information corresponding to the plurality of sidelink data from the second terminal device.

[0091] S904, the first terminal device sends the sidelink feedback information to the network device, and the sidelink feedback information is carried by the PUCCH. Correspondingly, the network device receives the sidelink feedback information carried by the PUCCH sent by the first terminal device.

[0092] The first terminal device described in S901-S904 is, for example, a first terminal device included in a vehicle 81 as shown in FIG. 8A. Figure 8 The second terminal device is, for example, a second terminal device included in a vehicle 82 as shown in FIG. 8B. Figure 8 The second terminal device is, for example, a second terminal device included in a vehicle 82 as shown in FIG. 8B.

[0093] In one possible approach, the network device can configure a sideline transmission resource and a corresponding PUCCH transmission resource for the first terminal device via DG or CG methods. Specifically, if the network device configures a sideline transmission resource and a corresponding PUCCH transmission resource for the first terminal device via CG methods, then the sideline transmission resource and the corresponding PUCCH transmission resource can be resources within one SL CG cycle. The sideline transmission resource can be the transmission resource corresponding to a PSSCH. One PSSCH is used to transmit one piece of sideline data, and one piece of sideline data can include multiple transmission blocks (TBs), for example, one piece of sideline data includes 2 TBs. Specifically, the first terminal device can transmit data via one PSSCH to a device such as… Figure 8 The vehicle 82 shown includes a second terminal device that sends one sideline data carried by the PSSCH. If the second terminal device provides feedback based on a TB, and one sideline data corresponds to 2 bits of sideline feedback information, then the second terminal device sends 2 bits of sideline feedback information to the first terminal device. When the first terminal device receives the 2 bits of sideline feedback information, it can carry the 2 bits of sideline feedback information in the PUCCH configured for the first terminal device by the network device, and report the 2 bits of sideline feedback information to the network device through the PUCCH. In other cases, a TB may also include multiple Code Block Groups (CBGs). For example, a TB may include 4 CBGs. If a PSSCH is used to transmit one sideline data, and one sideline data includes 2 TBs, then a PSSCH can carry 8 CBGs. If the second terminal device provides feedback based on CBGs, then the second terminal device sends 8 bits of sideline feedback information to the first terminal device. Similarly, the first terminal device reports the 8 bits of sideline feedback information to the network device through the PUCCH.

[0094] In another possible approach, the network device can configure multiple side-by-side transmission resources and a transmission resource corresponding to a PUCCH for the first terminal device. For example... Figure 10As shown, the network device configures the first terminal device with the transmission resource corresponding to PSSCH1 and the transmission resource corresponding to PUCCH through DCI1, configures the first terminal device with the transmission resource corresponding to PSSCH2 and the transmission resource corresponding to PUCCH through DCI2, configures the first terminal device with the transmission resource corresponding to PSSCH3 and the transmission resource corresponding to PUCCH through DCI3, and configures the first terminal device with the transmission resource corresponding to PSSCH4 and the transmission resource corresponding to PUCCH through DCI4. Each of DCI1, DCI2, DCI3 and DCI4 can be a configuration information in DG manner or a configuration information in CG manner. The transmission resources corresponding to the PUCCHs respectively configured by DCI1, DCI2, DCI3 and DCI4 overlap in the time domain, or are in the same time slot, in which case it can be determined that DCI1, DCI2, DCI3 and DCI4 respectively point to the same PUCCH, for example, PUCCH1, or it can be determined that one PUCCH carries the sidelink feedback information corresponding to the sidelink data transmitted by the four PSSCH channels. Further, the first terminal device transmits different sidelink data to the second terminal device in time through PSSCH1, PSSCH2, PSSCH3 and PSSCH4, for example, the first terminal device transmits sidelink data 1 to the second terminal device through PSSCH1, and the second terminal device transmits sidelink feedback information 1 corresponding to the sidelink data 1 to the first terminal device. Similarly, the first terminal device transmits sidelink data 2 to the second terminal device through PSSCH2, and the second terminal device transmits sidelink feedback information 2 corresponding to the sidelink data 2 to the first terminal device. The first terminal device transmits sidelink data 3 to the second terminal device through PSSCH3, and the second terminal device transmits sidelink feedback information 3 corresponding to the sidelink data 3 to the first terminal device. The first terminal device transmits sidelink data 4 to the second terminal device through PSSCH4, and the second terminal device transmits sidelink feedback information 4 corresponding to the sidelink data 4 to the first terminal device. The sidelink data 1, the sidelink data 2, the sidelink data 3 and the sidelink data 4 can be four different sidelink data. Further, the first terminal device carries the sidelink feedback information 1, the sidelink feedback information 2, the sidelink feedback information 3 and the sidelink feedback information 4 in PUCCH1, and if each sidelink feedback information corresponds to 1 bit, PUCCH1 can carry 4 bits of sidelink feedback information. The first terminal device reports the 4 bits of sidelink feedback information to the network device through PUCCH1.

[0095] In still another possible manner, one configuration information can configure multiple sidelink transmission resources and a transmission resource corresponding to one PUCCH. For example, Figure 10The transmission resources corresponding to PSSCH1, PSSCH2, and PSSCH3 shown can be configured by DCI1, and the transmission resource corresponding to PSSCH4 can be configured by DCI2. PSSCH1, PSSCH2, and PSSCH3 can be used to send sideline data 1, and PSSCH4 can be used to send sideline data 2. For example, if the first terminal device initially sends sideline data 1 to the second terminal device via PSSCH1, but the second terminal device may not successfully receive sideline data 1, the sideline feedback information sent by the second terminal device to the first terminal device will specifically be a negative acknowledgment (NACK) message. Further, if the first terminal device retransmits sideline data 1 to the second terminal device via PSSCH2, and the sideline feedback information corresponding to sideline data 1 is still NACK after the retransmission, the first terminal device can retransmit sideline data 1 to the second terminal device via PSSCH3. After this retransmission, the sideline feedback information corresponding to sideline data 1 will be, for example, an acknowledgment (ACK) message. The first terminal device can carry the last sideline feedback information corresponding to the sideline data 1 in PUCCH1. Further, the first terminal device sends sideline data 2 to the second terminal device via PSSCH4, receives the sideline feedback information corresponding to sideline data 2, and carries the sideline feedback information corresponding to sideline data 2 in PUCCH1. Thus, PUCCH1 can carry sideline feedback information corresponding to multiple different sideline data sets.

[0096] In another possible approach, the network device may configure multiple side-by-side transmission resources for the first terminal device within a single SL CG cycle using a CG configuration. For example... Figure 11As shown, there are 4 sidelink configured grant transmission resources, 4 sidelink feedback channel transmission resources, and 1 uplink feedback channel transmission resource in one SL CG period, where the 4 sidelink configured grant transmission resources can be specifically 4 PSSCH corresponding transmission resources, the 4 sidelink feedback channel transmission resources can be specifically 4 PSFCH corresponding transmission resources, and the 1 uplink feedback channel transmission resource can be specifically 1 PUCCH corresponding transmission resource. In an implementation manner, in one SL CG period, 1 PUCCH resource is after the last PSFCH resource. For example, the first terminal device can send 4 different sidelink data to the second terminal device by using 4 PSSCH resources in one SL CG period, one PSSCH carries one sidelink data, and the second terminal device sends 4 sidelink feedback information corresponding to the 4 sidelink data to the first terminal device by using 4 PSFCH resources, one PSFCH carries one sidelink feedback information. In this way, in one SL CG period, the first terminal device can receive 4 sidelink feedback information, if one sidelink feedback information corresponds to 1 bit, the first terminal device can carry 4 bits of sidelink feedback information on the PUCCH resource in the SL CG period, and report the 4 bits of sidelink feedback information to the network device through the PUCCH.

[0097] The communication method provided by the embodiment can be used to receive, by the first terminal device, the configuration information sent by the network device, so that the network device can configure sidelink transmission resources and PUCCH corresponding transmission resources for the first terminal device. The first terminal device can send multiple sidelink data to the second terminal device on the sidelink transmission resources configured by the network device, and receive sidelink feedback information corresponding to the multiple sidelink data from the second terminal device. The number of bits corresponding to the sidelink feedback information is greater than 1. When the first terminal device reports the sidelink feedback information to the network device through the PUCCH corresponding transmission resources configured by the network device, one PUCCH can carry multiple bits of sidelink feedback information, thereby improving the utilization rate of the PUCCH corresponding transmission resources.

[0098] On the basis of the above-mentioned embodiment, the information carried by the PUCCH can include a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to sidelink data. Specifically, the first feedback information field can include one or more subfields, such as Figure 12 As shown, 110 represents the first feedback information field, and the first feedback information field can include one or more subfields, for example, 111 represents any one subfield in the first feedback information field. In addition, in the embodiment, the first feedback information field can include one or more subfields, and each subfield can carry one bit of sidelink feedback information. Figure 12On the basis of the first feedback information field, the PUCCH can further include other information fields, such as the information field shown by the dashed box, which can be used to carry other feedback information in addition to the sidelink feedback information, and the specific carrying content will be introduced in subsequent embodiments. In addition, the embodiments of the present application do not limit the positional relationship between the information field shown by the dashed box and the first feedback information field.

[0099] In order to distinguish between the sidelink transmission resources configured by the network device for the first terminal device in the DG manner or the CG manner, the sidelink transmission resources configured by the network device for the first terminal device in the DG manner can be recorded as first sidelink transmission resources, and the sidelink transmission resources configured by the network device for the first terminal device in the CG manner within one SL CG period can be recorded as second sidelink transmission resources. The sidelink transmission resources configured by the network device for the first terminal device include the first sidelink transmission resources and / or the second sidelink transmission resources.

[0100] In a possible manner, the plurality of sidelink transmission resources configured by the network device for the first terminal device are respectively the first sidelink transmission resources. The first feedback information field includes a second feedback information field, and the second feedback information field is used to carry sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resources. Figure 10 As shown, PSSCH1, PSSCH2, PSSCH3, and PSSCH4 are respectively the sidelink transmission resources configured by the network device for the first terminal device in the DG manner, then the sidelink feedback information corresponding to PSSCH1 can be carried in subfield 111, the sidelink feedback information corresponding to PSSCH2 can be carried in subfield 112, the sidelink feedback information corresponding to PSSCH3 can be carried in subfield 113, and the sidelink feedback information corresponding to PSSCH4 can be carried in subfield 114. Subfields 111, 112, 113, and 114 constitute the second feedback information field. Wherein, the number of bits corresponding to each subfield is determined according to at least one of the maximum number A of TBs carried by PSSCH and the maximum number B of CBGs included in one TB. Wherein, A and B can be configured by the network device or preconfigured. Optionally, A and B are resource pool configuration parameters, that is, different resource pools can be configured with different A and B values. For example, in the TB-based feedback manner, if one PSSCH carries A=2 TBs, then one subfield corresponds to 2 bits; if one PSSCH carries A=1 TB, then one subfield corresponds to 1 bit. In the CBG-based feedback manner, if one PSSCH carries A=1 TB, and one TB includes B=4 CBGs, then one subfield corresponds to 4 bits; if one PSSCH carries A=2 TBs, and one TB includes B=4 CBGs, then one subfield corresponds to 8 bits.

[0101] In another possible mode, the network device configures multiple sidelink transmission resources for the first terminal device respectively as second sidelink transmission resources, and the first feedback information field includes a third feedback information field, and the third feedback information field is used to carry sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resources. For example, when the network device configures multiple sidelink transmission resources for the first terminal device in one SL CG period through the CG mode, the first feedback information field can include a subfield, as shown in Figure 13 130 represents a subfield included in the first feedback information field, at this time, the subfield 130 can be recorded as the third feedback information field. The subfield is used to carry sidelink feedback information corresponding to multiple sidelink transmission resources configured by the network device for the first terminal device in one SL CG period through the CG mode. For example, Figure 11 As shown in FIG. 13B, four PSSCH resources are included in one SL CG period, if each PSSCH resource carries a different sidelink data, the first terminal device can receive four sidelink feedback information, if one sidelink feedback information corresponds to 1 bit, the first terminal device can carry 4 bits of sidelink feedback information in the third feedback information field 130.

[0102] In another possible mode, the multiple sidelink transmission resources are configured by the network device for the first terminal device through the DG mode and the CG mode, and the PUCCH resource configured by the network device through the DG mode and the PUCCH resource configured by the network device for the first terminal device through the CG mode overlap in the time domain, or in the same time slot, or are the same PUCCH resource, at this time, the terminal device carries sidelink feedback information corresponding to the sidelink transmission resources allocated by the DG mode and the CG mode using one PUCCH, that is, one PUCCH needs to multiplex sidelink feedback information corresponding to sidelink transmission resources configured by the network device through the DG mode and sidelink feedback information corresponding to sidelink transmission resources configured by the network device through the CG mode, in this case, the first feedback information field includes the second feedback information field and the third feedback information field. As shown in Figure 14As shown, the network device configures the first terminal device with PSSCH1 resource and PUCCH1 resource in a DG manner through DCI1. The network device configures the first terminal device with PSSCH3 resource and PUCCH1 resource, and PSSCH4 resource and PUCCH2 resource in a CG manner through DCI2, wherein the PSSCH3 resource and the PUCCH1 resource are in a first SL CG period, and the PSSCH4 resource and the PUCCH2 resource are in a second SL CG period. In addition, the network device also configures the first terminal device with PSSCH2 resource and PUCCH1 resource in a DG manner through DCI3. That is, the transmission resource corresponding to the PSSCH1 and the transmission resource corresponding to the PSSCH2 are first sidelink transmission resources, the transmission resource corresponding to the PSSCH3 is a second sidelink transmission resource, and the sidelink feedback information corresponding to the PSSCH1, the PSSCH2 and the PSSCH3 are all carried through the PUCCH1. Among them, the sidelink feedback information corresponding to the PSSCH1 specifically refers to the sidelink feedback information corresponding to the sidelink data transmitted through the PSSCH1, and the meanings of the sidelink feedback information corresponding to the PSSCH2 and the PSSCH3 are similar, which will not be described here. Figure 15 As shown, the PUCCH1 can be a structural schematic diagram of a first feedback information field included in the PUCCH1. Specifically, the first feedback information field includes three subfields, wherein the subfield 111 is used to carry the sidelink feedback information corresponding to the PSSCH1, the subfield 112 is used to carry the sidelink feedback information corresponding to the PSSCH2, and the subfield 130 is used to carry the sidelink feedback information corresponding to the PSSCH3. It can be understood that, as shown in Figure 15 The corresponding relationship between the subfields and the sidelink feedback information shown in the figure is only a schematic illustration and is not specifically limited. Among them, the subfield 111 and the subfield 112 constitute a second feedback information field 150, and the subfield 130 is a third feedback information field. That is, the second feedback information field can include one or more subfields, and each subfield can carry the sidelink feedback information corresponding to one sidelink data. For example, the PSSCH1 carries one sidelink data, the sidelink data includes two TBs, and in the TB-based feedback mode, the subfield 111 includes two bits of sidelink feedback information.

[0103] In addition, the information carried by one PUCCH can include at most one third feedback information field, and the number of bits of the third feedback information field is determined by the number of sidelink data that can be transmitted by the second sidelink transmission resource.

[0104] For example, Figure 14 As shown, one PSSCH is included in one SL CG period, and if the PSSCH includes one TB, in the TB-based feedback mode, the third feedback information field such as the subfield 130 includes one bit of sidelink feedback information.

[0105] For another example, as shown inFigure 11 As shown in FIG. 13, one SL CG period includes 4 PSSCHs, if one PSSCH is used to transmit one sidelink data, and one sidelink data corresponds to 2 TBs, in the TB-based feedback mode, the third feedback information field, for example, the subfield 130, can include 8 bits of sidelink feedback information.

[0106] For another example, as shown in FIG. 14, one SL CG period includes 4 PSSCHs, if 4 PSSCHs are used to transmit the same sidelink data, for example, the first transmission and retransmission of one sidelink data, and one sidelink data corresponds to 2 TBs, in the TB-based feedback mode, the third feedback information field, for example, the subfield 130, can include 2 bits of sidelink feedback information. Figure 11 In addition, based on the above, one SL CG period can also include multiple PSSCHs, for example, as shown in FIG. 15, one SL CG period includes 4 PSSCHs, at this time, the number of bits of the third feedback information field is similar to the case shown in FIG. 13, and details are not described herein again.

[0107] Figure 14 In addition, based on the above, one SL CG period can also include multiple PSSCHs, for example, as shown in FIG. 15, one SL CG period includes 4 PSSCHs, at this time, the number of bits of the third feedback information field is similar to the case shown in FIG. 13, and details are not described herein again. Figure 11 Figure 11 In addition, based on the above, one SL CG period can also include multiple PSSCHs, for example, as shown in FIG. 15, one SL CG period includes 4 PSSCHs, at this time, the number of bits of the third feedback information field is similar to the case shown in FIG. 13, and details are not described herein again.

[0108] In addition, the sidelink feedback information corresponding to the PSSCHs in different SL CG periods can be carried in different PUCCHs, for example, as shown in FIG. 16, the sidelink feedback information corresponding to the PSSCH3 in the first SL CG period can be carried in the PUCCH1, and the sidelink feedback information corresponding to the PSSCH4 in the second SL CG period can be carried in the PUCCH2. Figure 14 As shown in FIG. 17, the third feedback information field 130 is after the second feedback information field 150, or the third feedback information field 130 can also be before the second feedback information field 150.

[0109] Figure 15 As shown in FIG. 18, when the sidelink feedback information reported by the first terminal device to the network device through the PUCCH does not include the sidelink feedback information corresponding to the sidelink transmission resource configured based on the CG mode, the third feedback information field 130 is not included in the first feedback information field 110, and the number of subfields included in the first feedback information field 110 is the number of sidelink feedback information corresponding to the sidelink transmission resource configured based on the DG mode.

[0110] As shown in FIG. 19, when the sidelink feedback information reported by the first terminal device to the network device through the PUCCH includes the sidelink feedback information corresponding to the sidelink transmission resource configured based on the CG mode, the third feedback information field 130 is included in the first feedback information field 110, and the number of subfields included in the first feedback information field 110 is the sum of the number of sidelink feedback information corresponding to the sidelink transmission resource configured based on the CG mode and the number of sidelink feedback information corresponding to the sidelink transmission resource configured based on the DG mode. Figure 15 As shown in FIG. 20, when the sidelink feedback information reported by the first terminal device to the network device through the PUCCH does not include the sidelink feedback information corresponding to the sidelink transmission resource configured based on the CG mode, the third feedback information field 130 is not included in the first feedback information field 110, and the number of subfields included in the first feedback information field 110 is the number of sidelink feedback information corresponding to the sidelink transmission resource configured based on the DG mode.

[0111] Figure 15 ​​​​As shown, when the sideline feedback information reported by the first terminal device to the network device via PUCCH does not include the sideline feedback information corresponding to the sideline transmission resources configured based on DG mode, the second feedback information field 150 is not included in the first feedback information field 110. In this case, the third feedback information field 130 can be used as a subfield of the first feedback information field 110.

[0112] like Figure 15 As shown, when the side feedback information reported by the first terminal device to the network device via PUCCH includes side feedback information corresponding to side transmission resources configured based on DG mode and side feedback information corresponding to side transmission resources configured based on CG mode, the first feedback information field 110 includes a third feedback information field 130 and a second feedback information field 150. At this time, the number of subfields included in the first feedback information field 110 is the number of side feedback information corresponding to side transmission resources configured based on DG mode plus 1.

[0113] Optionally, the number of bits of the sideline feedback information corresponding to one sideline data carried in the third feedback information field may be the same as or different from the number of bits of the sideline feedback information corresponding to one sideline data carried in the second feedback information field. For example... Figure 15 As shown, the third feedback information field 130 is used to carry the sideline feedback information corresponding to the second sideline transmission resource, and the second feedback information field 150 is used to carry the sideline feedback information corresponding to the first sideline transmission resource. For example, the third feedback information field 130 is used to carry, for example, Figure 14 The side feedback information corresponding to PSSCH3 shown is used to carry subfield 111, which is used to carry information such as... Figure 14 The side feedback information corresponding to PSSCH1 is shown. PSSCH1 and PSSCH3 can each carry one side data segment; however, the number of TBs included in the side data carried by PSSCH1 may be the same or different from the number of TBs included in the side data carried by PSSCH3. If the number of TBs carried by PSSCH1 and PSSCH3 is different, in the TB-based feedback method, the number of bits corresponding to the third feedback information field 130 is different from the number of bits corresponding to the subfield 111. If the number of TBs carried by PSSCH1 and PSSCH3 is the same, in the TB-based feedback method, the number of bits corresponding to the third feedback information field 130 is the same as the number of bits corresponding to the subfield 111. The CBG-based feedback method is similar and will not be described further here.

[0114] For the parameters A and B as described above, when a PUCCH can include at most one third feedback information field, the number of bits corresponding to each subfield in the second feedback information field can be determined according to at least one of A_DG and B_DG. The number of bits corresponding to the third feedback information field can be determined according to at least one of A_CG and B_CG, where A_DG and B_DG, A_CG and B_CG can be independent parameters, for example, A_DG = 2, A_CG = 1, B_DG = 4, and B_CG = 2. Wherein, A_DG and B_DG, A_CG and B_CG can be pre-configured by the network device.

[0115] The communication method provided by the embodiment of the present application further improves the utilization rate of the transmission resource corresponding to the PUCCH by multiplexing the sidelink feedback information corresponding to the sidelink transmission resource configured by the network device in the DG manner and the sidelink feedback information corresponding to the sidelink transmission resource configured by the network device in the CG manner in one PUCCH.

[0116] On the basis of the above-mentioned embodiments, as shown in Figure 10 The network device configures the transmission resources corresponding to PSSCH1, PSSCH2, PSSCH3, and PSSCH4 for the first terminal device in the DG manner through DCI1, DCI2, DCI3, and DCI4, respectively. In addition, the PUCCH configured by DCI1, DCI2, DCI3, and DCI4 is PUCCH1. Wherein, DCI1, DCI2, DCI3, and DCI4 can be carried in different PDCCHs. In some cases, the first terminal device can not successfully receive one or more of DCI1, DCI2, DCI3, and DCI4, for example, the first terminal device does not successfully receive DCI2, then the first terminal device will not send sidelink data on the transmission resource corresponding to PSSCH2 scheduled by DCI2, and similarly, the first terminal device will not receive the sidelink feedback information corresponding to PSSCH2. At this time, it can cause the network device to fail to detect the PUCCH.

[0117] To solve the problem, embodiments of the present application propose that when the network device configures multiple sidelink transmission resources for the first terminal device in a DG manner, and the multiple sidelink transmission resources correspond to the same PUCCH, the configuration information DCI includes indication information, which is used to determine the number of DCIs accumulated and sent by the network device. Specifically, the indication information is used to indicate the number of DCIs accumulated and sent by the network device when the network device configures sidelink transmission resources for the first terminal device in a DG manner. For example, the indication information is specifically a sidelink assignment indicator (SAI). In addition, when the network device configures sidelink transmission resources for the first terminal device in a CG manner using the second type of configuration grant, the corresponding DCI can include the SAI or can not include the SAI.

[0118] As shown in Figure 16 , the network device configures PSSCH1, PSSCH2, and PSSCH3 for the first terminal device through three DCIs, for example, DCI1, DCI2, and DCI3 in a DG manner, and the three DCIs, for example, DCI1, DCI2, and DCI3, configure the same PUCCH1. In DCI1, DCI2, and DCI3, one SAI is included, for example, the SAI in DCI1 takes the value 1, the SAI in DCI2 takes the value 2, and the SAI in DCI3 takes the value 3. If the first terminal device successfully receives DCI1 and DCI3 but does not successfully receive DCI2, the first terminal device can determine that the network device has accumulated and sent three DCIs according to the maximum value of the SAIs included in the received DCI1 and DCI3, and further, the first terminal device can determine the un-received DCI according to the number of DCIs accumulated and sent by the network device and the received DCI. For example, the first terminal device determines that the first terminal device does not receive DCI2 according to the number of DCIs accumulated and sent by the network device, which is 3, and the value of the SAI included in DCI1, which is 1, and the value of the SAI included in DCI3, which is 3.

[0119] Optionally, the number of sub-fields included in the second feedback information field in the PUCCH 1 can be determined according to the maximum value of the SAI included in the DCI detected by the first terminal device. For example, the maximum value of the SAI included in the DCI 1 and the DCI 3 received by the first terminal device is 3, and the first terminal device determines that the number of sub-fields included in the second feedback information field in the PUCCH 1 is 3. It can be understood that if the first feedback information field only includes the second feedback information field, the number of sub-fields included in the first feedback information field is the number of sub-fields included in the second feedback information field. If the first feedback information field includes the second feedback information field and the third feedback information field, the number of sub-fields included in the first feedback information field is the number of sub-fields included in the second feedback information field plus 1. Therefore, the first terminal device can determine the number of sub-fields included in the first feedback information field according to the SAI.

[0120] Since the first terminal device does not receive the DCI 2, the first terminal device will not send sidelink data on the PSSCH 2 scheduled by the DCI 2, and for the same reason, the first terminal device will not receive the sidelink feedback information corresponding to the PSSCH 2. In the embodiment of the present application, the sidelink feedback information corresponding to the PSSCH 2 can be regarded as the sidelink feedback information corresponding to the DCI 2 not received by the first terminal device, and the sidelink feedback information corresponding to the DCI 2 not received by the first terminal device can also be carried in the second feedback information field in the PUCCH 1. Specifically, the second feedback information field includes a fourth feedback information field, and the fourth feedback information field is used to carry the sidelink feedback information corresponding to the DCI 2 not received by the first terminal device. As shown in FIG. 17, 170 represents the second feedback information field, and the second feedback information field 170 includes a sub-field 171, a fourth feedback information field 172 and a sub-field 173. The sub-field 171 is used to carry the sidelink feedback information corresponding to the PSSCH 1, for example, ACK. The fourth feedback information field 172 is used to carry the sidelink feedback information corresponding to the DCI 2, and since the first terminal device does not receive the sidelink feedback information corresponding to the PSSCH 2, the sidelink feedback information corresponding to the DCI 2 is NACK. The sub-field 173 is used to carry the sidelink feedback information corresponding to the PSSCH 3, for example, ACK. When the network device receives the information carried by the PUCCH 1, it can be determined from the fourth feedback information field 172 that the sidelink feedback information is NACK, and therefore the network device can retransmit the DCI 2 to the first terminal device to reassign the transmission resource corresponding to the PSSCH 2 to the first terminal device through the DCI 2. Figure 17

[0121] ​In an embodiment, the fourth feedback information field has the same number of bits as the other subfields (e.g., the subfield 171 and the subfield 173) in the second feedback information field. The communication method provided by the embodiments of the present application can be used when the network device configures multiple sidelink transmission resources for the first terminal device in a DG manner, and the multiple sidelink transmission resources correspond to the same PUCCH. By including the indication information in the configuration information DCI, the indication information is used to determine the number of DCIs sent by the network device, so that the first terminal device feeds back the sidelink feedback information corresponding to the DCI that is not received by the first terminal device in the PUCCH. Therefore, when the network device receives the information carried in the PUCCH, the network device can determine the DCI that is not received by the first terminal device, and retransmit the DCI to the first terminal device. Thus, when the first terminal device fails to receive the DCI, the number of bits of the sidelink feedback information reported by the first terminal device through the PUCCH is consistent with the number of bits of the information expected by the network device. Therefore, when the network device fails to detect the PUCCH, the network device does not need to perform blind detection on the PUCCH. In addition, the reliability of the network device in configuring the sidelink transmission resources is improved.

[0122] On the basis of the above-described embodiments, when the network device configures the sidelink transmission resources for the first terminal device in a CG manner, the network device can activate or deactivate the sidelink transmission resources through the DCI. In the embodiments of the present application, the first terminal device can send feedback information to the network device for the DCI used to activate or deactivate the sidelink transmission resources. If the first terminal device successfully receives the DCI used to activate or deactivate the sidelink transmission resources, the first terminal device sends an ACK to the network device. If the first terminal device fails to successfully receive the DCI used to activate or deactivate the sidelink transmission resources, the first terminal device sends a NACK to the network device. It can be understood that the DCI used to activate or deactivate the sidelink transmission resources can also configure the transmission resources of the PUCCH, and the PUCCH is used to carry the feedback information corresponding to the DCI used to activate or deactivate the sidelink transmission resources. If the transmission resources of the PUCCH configured by the DCI used to activate or deactivate the sidelink transmission resources and the transmission resources of the PUCCH used to carry the sidelink feedback information overlap in the time domain or are in the same time slot, the feedback information corresponding to the DCI used to activate or deactivate the sidelink transmission resources and the sidelink feedback information need to be multiplexed in the same PUCCH.

[0123] For example, in the case of the first terminal device receiving the DCI used to activate or deactivate the sidelink transmission resources in the time slot 1, the first terminal device can send the feedback information corresponding to the DCI used to activate or deactivate the sidelink transmission resources in the PUCCH in the time slot 2. Figure 12On the basis of the PUCCH, the PUCCH can further include other information fields, for example, the information field shown by the dashed box, which can be recorded as a fifth feedback information field, and the fifth feedback information field is used to carry feedback information of the first terminal device for the DCI sent by the network device and used to activate or deactivate the sidelink transmission resource. For example, the network device activates the sidelink configured grant transmission resource through the DCI 2, and the feedback information of the first terminal device for the DCI 2 is, for example, ACK, and the PUCCH transmission resource carrying the ACK is the PUCCH as shown in Figure 12 The fifth feedback information field of the PUCCH can include the feedback information ACK corresponding to the DCI 2.

[0124] As shown in Figure 12 , the fifth feedback information field is after the first feedback information field 110, and in other embodiments, the fifth feedback information field can also be before the first feedback information field 110.

[0125] Similarly, on the basis of Figure 13 , Figure 15 , Figure 17 , the fifth feedback information field can also be included, and details are not repeated one by one.

[0126] Optionally, one PUCCH can include at most one fifth feedback information field.

[0127] The communication method provided by the embodiment can further improve the utilization rate of the transmission resource corresponding to the PUCCH by multiplexing the feedback information corresponding to the DCI used to activate or deactivate the sidelink transmission resource and the sidelink feedback information in the same PUCCH.

[0128] Figure 18 A structural diagram of a terminal device provided by the present application is shown in Figure 19 , and the terminal device 180 includes:

[0129] The receiving module 181 is configured to receive configuration information sent by a network device, and the configuration information is used to configure a sidelink transmission resource and a transmission resource corresponding to a physical uplink control channel (PUCCH);

[0130] The sending module 182 is configured to send a plurality of sidelink data to other terminal devices on the sidelink transmission resource;

[0131] The receiving module 181 is further configured to receive sidelink feedback information corresponding to the plurality of sidelink data from the other terminal devices;

[0132] The sending module 182 is further configured to send the sidelink feedback information to the network device, and the sidelink feedback information is carried by the PUCCH.

[0133] The terminal device provided in the embodiment is used for implementing the technical solutions of the terminal device side in any of the preceding method embodiments, and has similar implementation principles and technical effects, which will not be repeated here.

[0134] Optionally, the information carried by the PUCCH includes a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data.

[0135] Optionally, the sidelink transmission resource includes a first sidelink transmission resource and / or a second sidelink transmission resource; the first sidelink transmission resource is a sidelink transmission resource configured for the terminal device by the network device in a dynamic scheduling manner; and the second sidelink transmission resource is a sidelink transmission resource in a sidelink configured grant period configured for the terminal device by the network device in a sidelink configured grant manner.

[0136] Optionally, the first feedback information field includes a second feedback information field and / or a third feedback information field; the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the terminal device using the first sidelink transmission resource; and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the terminal device using the second sidelink transmission resource.

[0137] Optionally, the second feedback information field includes at least one subfield, and each subfield in the at least one subfield is used to carry sidelink feedback information corresponding to one sidelink data.

[0138] Optionally, at most one third feedback information field is included in the information carried by one PUCCH.

[0139] Optionally, the number of bits of the third feedback information field is determined by the number of sidelink data that can be transmitted by the second sidelink transmission resource.

[0140] Optionally, the third feedback information field is after the second feedback information field.

[0141] Optionally, the third feedback information field is before the second feedback information field.

[0142] Optionally, the sidelink transmission resource includes transmission resource corresponding to a physical sidelink shared channel (PSSCH); and the number of bits of each subfield in the first feedback information field is determined according to at least one of the maximum number of transport blocks carried by the PSSCH and the maximum number of code block groups included in the transport blocks.

[0143] Optionally, the number of bits of sidelink feedback information corresponding to one sidelink data carried by the third feedback information field is the same as or different from the number of bits of sidelink feedback information corresponding to one sidelink data carried by the second feedback information field.

[0144] Optionally, the first sidelink resource is configured by the network device through downlink control information (DCI), and the DCI includes indication information used for indicating a number of DCIs cumulatively transmitted by the network device.

[0145] Optionally, the indication information is used for indicating the number of DCIs cumulatively transmitted by the network device, including that the indication information is used for indicating the number of DCIs cumulatively transmitted by the network device when the network device configures sidelink resources to the terminal device in a dynamic scheduling manner.

[0146] Optionally, the terminal device further includes a processing module 183, configured to determine DCIs not received by the terminal device according to the number of DCIs cumulatively transmitted by the network device and the DCIs received by the terminal device; and the second feedback information field includes a fourth feedback information field, which carries sidelink feedback information corresponding to the DCIs not received by the terminal device.

[0147] Optionally, the terminal device further includes a processing module 183, configured to determine the number of subfields included in the first feedback information field according to the indication information.

[0148] Optionally, the configuration information includes DCI, which is used for indicating activation or deactivation of sidelink resources; and the PUCCH further includes a fifth feedback information field, which carries feedback information of the terminal device on the DCI.

[0149] Optionally, the fifth feedback information field is after the first feedback information field.

[0150] Optionally, the fifth feedback information field is before the first feedback information field.

[0151] Figure 19 A structural schematic diagram of a network device provided in the present application is shown in FIG. 1, which includes: Figure 20

[0152] a sending module 191, configured to send configuration information to a first terminal device, the configuration information being used for configuring sidelink resources and transmission resources corresponding to a physical uplink control channel (PUCCH);

[0153] a receiving module 192, configured to receive sidelink feedback information from the first terminal device, the sidelink feedback information being carried by the PUCCH, and the sidelink feedback information being sidelink feedback information corresponding to multiple sidelink data sent by the first terminal device to a second terminal device on the sidelink resources.

[0154] ​The network device provided in the embodiment is used for implementing the technical solutions on the network device side in any of the preceding method embodiments, and has similar implementation principles and technical effects, which will not be repeated here.

[0155] Optionally, the information carried by the PUCCH includes a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data.

[0156] Optionally, the sidelink transmission resource includes a first sidelink transmission resource and / or a second sidelink transmission resource; the first sidelink transmission resource is a sidelink transmission resource configured for the first terminal device in a dynamic scheduling manner by the network device; and the second sidelink transmission resource is a sidelink transmission resource in a sidelink configured grant period configured for the first terminal device in a sidelink configured grant manner by the network device.

[0157] Optionally, the first feedback information field includes a second feedback information field and / or a third feedback information field; the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resource; and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resource.

[0158] Optionally, the second feedback information field includes at least one subfield, and each subfield in the at least one subfield is used to carry sidelink feedback information corresponding to one sidelink data.

[0159] Optionally, at most one third feedback information field is included in the information carried by one PUCCH.

[0160] Optionally, the number of bits of the third feedback information field is determined by the number of sidelink data that can be transmitted by the second sidelink transmission resource.

[0161] Optionally, the third feedback information field is after the second feedback information field.

[0162] Optionally, the third feedback information field is before the second feedback information field.

[0163] Optionally, the sidelink transmission resource includes transmission resource corresponding to a physical sidelink shared channel (PSSCH); and the number of bits of each subfield in the first feedback information field is determined according to at least one of the maximum number of transport blocks carried by the PSSCH and the maximum number of code block groups included in the transport blocks.

[0164] Optionally, the number of bits of sidelink feedback information corresponding to one sidelink data carried by the third feedback information field is the same as or different from the number of bits of sidelink feedback information corresponding to one sidelink data carried by the second feedback information field.

[0165] Optionally, the first sidelink resource is configured by the network device through downlink control information (DCI), and the DCI includes indication information used for indicating a number of DCIs cumulatively transmitted by the network device.

[0166] Optionally, the indication information is used for indicating the number of DCIs cumulatively transmitted by the network device, including that the indication information is used for indicating the number of DCIs cumulatively transmitted by the network device when the network device configures sidelink resources for the first terminal device in a dynamic scheduling manner.

[0167] Optionally, the second feedback information field includes a fourth feedback information field, and the fourth feedback information field carries sidelink feedback information corresponding to DCI that is not received by the first terminal device.

[0168] Optionally, the configuration information includes DCI used for indicating activation or deactivation of sidelink resources; and the PUCCH further includes a fifth feedback information field, and the fifth feedback information field carries feedback information of the first terminal device on the DCI.

[0169] Optionally, the fifth feedback information field is after the first feedback information field.

[0170] Optionally, the fifth feedback information field is before the first feedback information field.

[0171] Figure 20 Another structural schematic diagram of a terminal device provided by the present application is shown in FIG. 2, which includes: Figure 20 a processor 201, a memory 202, and a communication interface 203 for communicating with a network device;

[0172] The memory 202 stores computer execution instructions.

[0173] The processor 201 executes the computer execution instructions stored in the memory 202, so that the processor 201 executes the technical solutions of the terminal device side in any of the preceding method embodiments.

[0174]

[0175] A simple design of a terminal device is provided by the present application, and the number of processors and memories in the terminal device is not limited in the embodiments of the present application, Figure 20 and only one is taken as an example for illustration. Figure 21

[0176] Figure 21 Another structural schematic diagram of a network device provided by the present application is shown in FIG. 3, which includes: Figure 21 ​​

[0177] the processor 211, the memory 212, and the communication interface 213 for communicating with the terminal device;

[0178] The memory 212 stores computer-executable instructions.

[0179] The processor 211 executes the computer-executable instructions stored in the memory 212, so that the processor 211 executes the technical solutions of the network device side in any of the preceding method embodiments.

[0180] Figure 21 For a simple design of the network device, the number of processors and memories in the network device is not limited in the embodiments of the present application, Figure 20 and only one is taken as an example for illustration.

[0181] In the above Figure 21 the terminal device and ​ In a specific implementation of the network device, the memory, the processor, and the communication interface can be connected through a bus, and optionally, the memory can be integrated in the processor.

[0182] The embodiments of the present application further provide a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the communication method in any of the preceding method embodiments is implemented.

[0183] The embodiments of the present application further provide a chip, which comprises a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the communication method in any of the preceding method embodiments.

[0184] The embodiments of the present application further provide a computer program product, which comprises computer program instructions, and the computer program instructions enable a computer to execute the communication method in any of the preceding method embodiments.

[0185] The embodiments of the present application further provide a computer program, which enables a computer to execute the communication method in any of the preceding method embodiments.

[0186] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. For example, the device embodiments described above are only schematic; the division of the modules is only a logical function division; there can be another division manner for the actual implementation, for example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different modules can be indirect couplings or communication connections through some interfaces, and electrical, mechanical or other forms.

[0187] In the specific implementation of the terminal device and the network device, it should be understood that the processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the present application can be directly embodied as hardware processor execution or executed by a combination of hardware and software modules in the processor.

[0188] All or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The foregoing program can be stored in a readable memory. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the foregoing memory (storage medium) includes read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc and any combination thereof.

Claims

1. A communication method characterized by comprising: The method comprises: The first terminal device receives configuration information sent by the network device, and the configuration information is used for configuring sidelink transmission resources and transmission resources corresponding to a physical uplink control channel (PUCCH); The first terminal device sends multiple sidelink data to a second terminal device on the sidelink transmission resources; The first terminal device receives sidelink feedback information corresponding to the multiple sidelink data from the second terminal device; The first terminal device sends the sidelink feedback information corresponding to the multiple sidelink data to the network device, and the sidelink feedback information is carried by the PUCCH, wherein The information carried by the PUCCH comprises a first feedback information field, and the first feedback information field is used for carrying the sidelink feedback information corresponding to the sidelink data. The sidelink transmission resources comprise first sidelink transmission resources and / or second sidelink transmission resources, the first sidelink transmission resources are sidelink transmission resources configured for the first terminal device by the network device in a dynamic scheduling manner, and the second sidelink transmission resources are sidelink transmission resources in a sidelink configuration grant period configured for the first terminal device by the network device in a sidelink configuration grant manner; The first feedback information field comprises a second feedback information field and / or a third feedback information field, the second feedback information field carries the sidelink feedback information corresponding to the sidelink data sent by the first terminal device using the first sidelink transmission resources, and the third feedback information field carries the sidelink feedback information corresponding to the sidelink data sent by the first terminal device using the second sidelink transmission resources; The method further comprises: the first terminal device determines the DCI that is not received according to the number of DCIs accumulated and sent by the network device and the DCIs received by the first terminal device; and The second feedback information field comprises a fourth feedback information field, and the fourth feedback information field carries the sidelink feedback information corresponding to the DCI that is not received by the first terminal device.

2. The method of claim 1, wherein, The second feedback information field comprises at least one subfield, and each subfield in the at least one subfield is used for carrying the sidelink feedback information corresponding to one sidelink data.

3. The method according to claim 1 or 2, characterized in that, The information carried by one PUCCH comprises at most one third feedback information field.

4. The method of claim 1, wherein, The third feedback information field is after the second feedback information field.

5. The method of claim 1, wherein, The sidelink transmission resources comprise transmission resources corresponding to a physical sidelink shared channel (PSSCH); The number of bits corresponding to each subfield in the first feedback information field is determined according to at least one of the maximum number of transport blocks carried by the PSSCH and the maximum number of code block groups included in the transport blocks.

6. The method of claim 1, wherein, The network device configures the first sidelink transmission resources through a downlink control information (DCI), and the DCI comprises indication information used for indicating the number of DCIs accumulated and sent by the network device.

7. The method of claim 6, wherein, The indication information used for indicating the number of DCIs accumulated and sent by the network device comprises: The indication information is used for indicating the number of DCIs accumulated and sent by the network device when the network device configures sidelink transmission resources for the first terminal device in a dynamic scheduling manner.

8. The method of claim 6, wherein, The method further comprises: The first terminal device determines the number of subfields included in the first feedback information field according to the indication information.

9. A communication method, comprising: The network device sends configuration information to the first terminal device, wherein the configuration information is used to configure sidelink transmission resources and transmission resources corresponding to a physical uplink control channel (PUCCH); The network device receives sidelink feedback information from the first terminal device, wherein the sidelink feedback information is carried by the PUCCH, and the sidelink feedback information is sidelink feedback information corresponding to multiple sidelink data sent by the first terminal device to a second terminal device on the sidelink transmission resources. The PUCCH carries information including a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data. The sidelink transmission resources include first sidelink transmission resources and / or second sidelink transmission resources, the first sidelink transmission resources are sidelink transmission resources configured for the first terminal device in a dynamic scheduling manner by the network device, and the second sidelink transmission resources are sidelink transmission resources in a sidelink configured grant period configured for the first terminal device in a sidelink configured grant manner by the network device. The first feedback information field includes a second feedback information field and / or a third feedback information field, the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resources, and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resources. The DCI not received by the first terminal device is determined according to the number of DCIs accumulated and sent by the network device and the DCIs received by the first terminal device; and The second feedback information field includes a fourth feedback information field, and the fourth feedback information field carries sidelink feedback information corresponding to DCI not received by the first terminal device.

10. The method of claim 9, wherein, The second feedback information field includes at least one subfield, and each subfield in the at least one subfield is used to carry sidelink feedback information corresponding to one sidelink data.

11. The method according to claim 9 or 10, characterized in that, The information carried by one PUCCH includes at most one third feedback information field.

12. A terminal device, comprising: Comprises: a receiving module and a sending module; The receiving module is used to receive configuration information sent by a network device, wherein the configuration information is used to configure sidelink transmission resources and transmission resources corresponding to a physical uplink control channel (PUCCH); The sending module is used to send multiple sidelink data to other terminal devices on the sidelink transmission resources; The receiving module is further used to receive sidelink feedback information corresponding to the multiple sidelink data from the other terminal devices; The sending module is further used to send the sidelink feedback information corresponding to the multiple sidelink data to the network device, wherein the sidelink feedback information is carried by the PUCCH. The PUCCH carries information including a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data. The sidelink transmission resource includes a first sidelink transmission resource and / or a second sidelink transmission resource, the first sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a dynamic scheduling manner, and the second sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a sidelink configured grant manner in a sidelink configured grant period; The first feedback information field includes a second feedback information field and / or a third feedback information field, the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resource, and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resource; The terminal device further includes a processing module configured to determine the DCI not received by the first terminal device according to the number of DCIs accumulated and sent by the network device and the DCIs received by the first terminal device; and The second feedback information field includes a fourth feedback information field, and the fourth feedback information field carries sidelink feedback information corresponding to the DCI not received by the first terminal device. It includes:

13. A network device, comprising: A sending module configured to send configuration information to a first terminal device, the configuration information being used to configure sidelink transmission resources and physical uplink control channel (PUCCH) corresponding transmission resources; A receiving module configured to receive sidelink feedback information from the first terminal device, the sidelink feedback information being carried by the PUCCH, the sidelink feedback information being sidelink feedback information corresponding to multiple pieces of sidelink data sent by the first terminal device to a second terminal device on the sidelink transmission resources, wherein The information carried by the PUCCH includes a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data; The sidelink transmission resource includes a first sidelink transmission resource and / or a second sidelink transmission resource, the first sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a dynamic scheduling manner, and the second sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a sidelink configured grant manner in a sidelink configured grant period; The first feedback information field includes a second feedback information field and / or a third feedback information field, the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resource, and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resource; The DCI not received by the first terminal device is determined by the first terminal device according to the number of DCIs accumulated and sent by the network device and the DCIs received by the first terminal device; and The second feedback information field includes a fourth feedback information field, and the fourth feedback information field carries sidelink feedback information corresponding to the DCI not received by the first terminal device. It includes: A sending module configured to send configuration information to a first terminal device, the configuration information being used to configure sidelink transmission resources and physical uplink control channel (PUCCH) corresponding transmission resources; A receiving module configured to receive sidelink feedback information from the first terminal device, the sidelink feedback information being carried by the PUCCH, the sidelink feedback information being sidelink feedback information corresponding to multiple pieces of sidelink data sent by the first terminal device to a second terminal device on the sidelink transmission resources, wherein The information carried by the PUCCH includes a first feedback information field, and the first feedback information field is used to carry sidelink feedback information corresponding to the sidelink data; The sidelink transmission resource includes a first sidelink transmission resource and / or a second sidelink transmission resource, the first sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a dynamic scheduling manner, and the second sidelink transmission resource is a sidelink transmission resource configured for the first terminal device by the network device in a sidelink configured grant manner in a sidelink configured grant period; The first feedback information field includes a second feedback information field and / or a third feedback information field, the second feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the first sidelink transmission resource, and the third feedback information field carries sidelink feedback information corresponding to sidelink data sent by the first terminal device using the second sidelink transmission resource; The DCI not received by the first terminal device is determined by the first terminal device according to the number of DCIs accumulated and sent by the network device and the DCIs received by the first terminal device; and The second feedback information field includes a fourth feedback information field, and the fourth feedback information field carries sidelink feedback information corresponding to the DCI not received by the first terminal device.

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