WO2023020329A1

WO2023020329A1 - Wireless communication method and apparatus, device, and storage medium

Info

Publication number: WO2023020329A1
Application number: PCT/CN2022/111070
Authority: WO
Inventors: 郭文婷; 苏宏家; 董蕾; 卢磊
Original assignee: 华为技术有限公司
Priority date: 2021-08-18
Filing date: 2022-08-09
Publication date: 2023-02-23
Also published as: CN115714634A

Abstract

The present application provides a wireless communication method and apparatus, a device, and a storage medium, which may be applied to various communication systems, such as LTE, V2X, 5G, or future communication systems. The method comprises: according to a first code rate, determining the amount of resources occupied by second-level control information, the first code rate being preset or determined according to a preset first correspondence, the first correspondence being a correspondence between a first parameter and a code rate, and the amount of resources occupied being used to send the second-level control information; and sending first information, the first information comprising control information and sidelink data, the sidelink data comprising at least one retransmitted code block group (CBG), and the control information comprising the second-level control information. Each terminal may encode or decode the second-level control information on the basis of the first code rate, preventing each terminal from always retransmitting the entire TB when retransmitting by means of a sidelink, thus improving the retransmission efficiency of sidelink transmission.

Description

Wireless communication method, device, equipment and storage medium

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China on August 18, 2021, with the application number 202110951097.4 and the application name "Wireless communication method, device, equipment and storage medium", the entire content of which is incorporated by reference incorporated in this application.

technical field

The present application relates to the field of communication technologies, and in particular, to a wireless communication method, device, device and storage medium.

Background technique

At present, in some communication systems, such as the 5th generation wireless system (5G), signaling and data can be transmitted between terminal devices through sidelinks. This manner of performing transmission through the sidelink may be called sidelink transmission.

In sidelink transmission, due to factors such as cost, power consumption, and codec implementation complexity, the transport block (Transport Block, TB) is often divided into multiple code blocks (Code Block, CB) for transmission. In order to ensure the accuracy and integrity of information transmission, it is necessary to retransmit the entire TB in the case that the CB fails to transmit correctly. However, retransmitting the entire TB will result in a less efficient transfer.

Contents of the invention

A wireless communication method, device, device, and storage medium provided in the embodiments of the present application improve transmission efficiency.

In the first aspect, an embodiment of the present application provides a wireless communication method, the method includes: determining the amount of resources occupied by the second-level control information according to a first code rate, the first code rate is preset or is based on Determined by the preset first correspondence relationship, the first correspondence relationship is the correspondence relationship between the first parameter and the code rate, and the resource occupation quantity is used to send the second-level control information; sending the first information, the first information includes Control information and side data, the side data includes at least one coded block group CBG retransmitted, and the control information includes the second-level control information.

With the communication method provided in the first aspect, the first terminal device determines the resource occupation quantity of the second-level control information according to the first code rate, and sends the second terminal device for retransmitting at least one CBG based on the resource occupation quantity to the second terminal device One piece of information, so that the second terminal device can receive the first information from the first terminal device based on the first code rate, avoiding that each terminal always retransmits the entire TB when retransmitting through the sidelink link, and improves the efficiency of sidelink transmission retransmission efficiency.

In a possible implementation manner, the first parameter includes a modulation order, a modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is based on the first MCS mapping relationship The at least one code rate corresponding to the modulation order is determined, and the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.

Through the communication method provided in this embodiment, based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship, the code rate corresponding to each modulation order in the first correspondence relationship is determined, so that the first terminal device and the second The first code rate determined by the second terminal device based on the first correspondence relationship is more conducive to effective transmission of the second-level control information.

In a possible implementation manner, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the code rate corresponding to the modulation order In the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, the modulation order The average value of at least one code rate corresponding to the number.

Through the communication method provided by this embodiment, the code rate corresponding to each modulation order in the first correspondence can be selected from the higher, lower or average code rate among the possible code rates corresponding to the modulation order in the MCS mapping relationship value, so that the first code rate determined based on the first correspondence can be applied to different application scenarios.

In a possible implementation manner, the first parameter includes a modulation order, and in the first correspondence, a code rate corresponding to the modulation order is a preset code rate.

Through the communication method provided in this embodiment, the applicability of the first correspondence is improved.

In a possible implementation manner, the method further includes: obtaining an MCS index field; determining the modulation order corresponding to the MCS index field in the first MCS mapping relationship; according to the modulation order corresponding to the MCS index field and The first correspondence determines the first code rate.

Through the communication method provided by this embodiment, the code rate corresponding to each modulation order in the first correspondence is determined based on the code rate corresponding to each modulation order in the MCS mapping relationship, so that the first code rate obtained by the first terminal device It is related to the modulation order corresponding to the MCS index field, therefore, the second-level control information encoded based on the first code rate has higher transmission reliability.

In a possible implementation manner, the method further includes: acquiring MCS table indication information, where the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.

Through the communication method provided by this embodiment, on the one hand, how to determine the first MCS mapping relationship when there are multiple preset MCS mapping relationships is solved; on the other hand, when there is one preset MCS mapping relationship, how to ensure The preset MCS mapping relationship is the required first MCS mapping relationship.

In a possible implementation manner, the first parameter includes a transmission priority, and the method further includes: acquiring a target transmission priority; and determining the first code rate according to the target transmission priority and the first corresponding relationship.

Through the communication method provided by this embodiment, the first code rate obtained by the first terminal device is related to the target transmission priority. For example, when the target transmission priority is higher, the first code rate is higher. Therefore, the second-level control information When the requirements for transmission priority are higher, the second-level control information encoded based on the first code rate has higher transmission reliability.

In a possible implementation manner, the first parameter includes a transmission priority and a modulation order, and the method further includes: obtaining the MCS index field and the target transmission priority; and the first MCS mapping relationship corresponding to the first correspondence Determine the modulation order corresponding to the MCS index field; determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.

Through the communication method provided in this embodiment, the first code rate acquired by the first terminal device is related to the target transmission priority and the modulation order corresponding to the MCS index field, and the first The code rate is constrained so that the second-level control information encoded based on the first code rate has higher transmission reliability.

In a possible implementation manner, the first code rate is preset in configuration information of a resource pool, where the resource pool is a transmission resource preconfigured by a network device for sidelink transmission.

Through the communication method provided by this embodiment, the first code rate is preset in the configuration information of the resource pool, so that the first terminal device and/or the second terminal device can obtain the first code rate for retransmission of at least one CBG, and then This provides the possibility to retransmit part or all of the CBG of a TB during sidelink transmission between terminal devices, without always retransmitting the entire TB.

In a possible implementation manner, the first correspondence is preset in configuration information of a resource pool, where the resource pool is a transmission resource preconfigured by the network device for sidelink transmission.

Through the communication method provided by this embodiment, the first correspondence is preset in the configuration information of the resource pool, so that the first terminal device and/or the second terminal device can obtain the first code rate for retransmission of at least one CBG, and then This provides the possibility to retransmit part or all of the CBG of a TB during sidelink transmission between terminal devices, without always retransmitting the entire TB.

In a second aspect, the embodiment of the present application provides a wireless communication method, the method includes: receiving first information, the first information includes control information and sidelink data, the sidelink data includes at least one CBG retransmitted, the control The information includes second-level control information; according to the first code rate, determine the resource occupation quantity of the second-level control information, and the resource occupation quantity is used to receive the second-level control information; wherein, the first code rate is preset Alternatively, it is determined according to a preset first correspondence, where the first correspondence is a correspondence between the first parameter and the code rate.

In a possible implementation manner, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the code rate corresponding to the modulation order In the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, the modulation order The average code rate of at least one code rate corresponding to the number.

In a possible implementation manner, the control information includes an MCS index field, and the method further includes: determining a modulation order corresponding to the MCS index field in the first MCS mapping relationship; The order and the first corresponding relationship determine the first code rate.

In a possible implementation manner, the control information includes MCS table indication information, and the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.

In a possible implementation manner, the first parameter includes a transmission priority, the control information includes a target transmission priority, and the method further includes: determining the first code according to the target transmission priority and the first corresponding relationship Rate.

In a possible implementation manner, the first parameter includes a transmission priority and a modulation order, the control information includes an MCS index field and a target transmission priority, and the method further includes: in the first correspondence corresponding to the first Determine the modulation order corresponding to the MCS index field in the MCS mapping relationship; determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.

In a possible implementation manner, the first code rate is preset in configuration information of a resource pool, and the resource pool is a transmission resource preconfigured by the network device for sidelink transmission.

The beneficial effects of the wireless communication method provided by the above-mentioned second aspect and each possible implementation manner of the above-mentioned second aspect can be referred to the beneficial effects brought by the above-mentioned first aspect and each possible implementation manner of the first aspect, here I won't repeat them here.

In a third aspect, an embodiment of the present application provides a wireless communication method applied to a network device, the method comprising: sending configuration information of a resource pool to at least one terminal; wherein the resource pool is a transmission used for sidelink transmission resources, the configuration information includes a first code rate or a first correspondence, and the first correspondence is a correspondence between a first parameter and a code rate.

In a possible implementation manner, the first parameter includes a modulation order and/or a transmission priority.

In a possible implementation manner, the first parameter includes a modulation order, a modulation order in the first correspondence corresponds to a code rate, and the code rate is based on the modulation order in the first MCS mapping relationship. The at least one code rate is determined, and the first MCS mapping relationship corresponds to the first corresponding relationship in at least one preset MCS mapping relationship.

In a possible implementation manner, the configuration information further includes at least one MCS mapping relationship.

The beneficial effects of the wireless communication method provided by the above third aspect and each possible implementation manner of the above third aspect can be referred to the beneficial effects brought by the above first aspect and each possible implementation manner of the first aspect, here I won't repeat them here.

In a fourth aspect, the embodiment of the present application provides a communication device, including: a processing unit configured to determine the amount of resources occupied by the second-level control information according to a first code rate, where the first code rate is preset or is Determined according to the preset first correspondence relationship, the first correspondence relationship is the correspondence relationship between the first parameter and the code rate, and the resource occupation quantity is used to send the second-level control information; the transceiver unit is used to send First information, where the first information includes control information and sidelink data, where the sidelink data includes at least one retransmitted CBG, and the control information includes the second-level control information.

In a possible implementation manner, the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is based on the first MCS The at least one code rate corresponding to the modulation order in the mapping relationship is determined, and the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.

In a possible implementation manner, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the modulation order The code rate corresponding to the number is in the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first In the MCS mapping relationship, the average value of at least one code rate corresponding to the modulation order.

In a possible implementation manner, the processing unit is further configured to: obtain an MCS index field; determine a modulation order corresponding to the MCS index field in the first MCS mapping relationship; The first code rate is determined corresponding to the modulation order and the first corresponding relationship.

In a possible implementation manner, the processing unit is further configured to: acquire MCS table indication information, where the MCS table indication information is used to indicate the first MCS corresponding to the first correspondence in at least one MCS mapping relationship. Mapping relations.

In a possible implementation manner, the first parameter includes a transmission priority, and the processing unit is further configured to: acquire a target transmission priority; and determine the target transmission priority according to the target transmission priority and the first corresponding relationship. Describe the first code rate.

In a possible implementation manner, the first parameter includes a transmission priority and a modulation order, and the processing unit is further configured to: acquire an MCS index field and a target transmission priority; Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship; according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence, determine the first code rate.

In a possible implementation manner, the first code rate is preset in configuration information of a resource pool, and the resource pool is a transmission resource preconfigured by a network device for sidelink transmission.

In the fifth aspect, the embodiment of the present application provides a communication device, including: a transceiver unit, configured to receive first information, the first information includes control information and side data, and the side data includes at least one retransmitted CBG, the control information includes second-level control information; a processing unit, configured to determine the resource occupation quantity of the second-level control information according to the first code rate, and the resource occupation quantity is used to receive the second-level control information Control information; wherein, the first code rate is preset, or determined according to a preset first correspondence, and the first correspondence is a correspondence between a first parameter and a code rate.

In a possible implementation manner, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the modulation order The code rate corresponding to the number is in the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first In the MCS mapping relationship, the average code rate of at least one code rate corresponding to the modulation order.

In a possible implementation manner, the control information includes an MCS index field, and the processing unit is further configured to: determine a modulation order corresponding to the MCS index field in the first MCS mapping relationship; The modulation order corresponding to the MCS index field and the first corresponding relationship determine the first code rate.

In a possible implementation manner, the first parameter includes a transmission priority, the control information includes a target transmission priority, and the processing unit is further configured to: according to the target transmission priority and the first correspondence relationship, determine the first code rate.

In a possible implementation manner, the first parameter includes a transmission priority and a modulation order, the control information includes an MCS index field and a target transmission priority, and the processing unit is further configured to: Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the corresponding relationship; according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence, determine The first code rate.

In a sixth aspect, the embodiment of the present application provides a communication device, including: a transceiver unit, configured to send configuration information of a resource pool to at least one terminal; wherein, the resource pool is a transmission resource used for sidelink transmission, and the The configuration information includes a first code rate or a first correspondence, where the first correspondence is a correspondence between a first parameter and a code rate.

In the seventh aspect, the embodiment of the present application provides a communication device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and perform the communication as described in the first aspect or A method in each possible implementation manner of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, to perform the communication as described in the second aspect or A method in each possible implementation manner of the second aspect.

In the ninth aspect, the embodiment of the present application provides a communication device, including: a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the communication device as described in the third aspect or A method in each possible implementation manner of the third aspect.

In the tenth aspect, the embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from the memory, so that the device installed with the chip executes the first aspect or each possible implementation manner of the first aspect method in .

In the eleventh aspect, the embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from the memory, so that the device installed with the chip executes the second aspect or each possible implementation of the second aspect methods in methods.

In a twelfth aspect, the embodiment of the present application provides a chip, including: a processor, configured to call and execute computer instructions from the memory, so that the device installed with the chip executes the third aspect or each possible implementation of the third aspect methods in methods.

In a thirteenth aspect, the embodiments of the present application provide a computer-readable storage medium for storing computer program instructions, and the computer program causes the computer to execute the method in the first aspect or in each possible implementation manner of the first aspect.

In a fourteenth aspect, the embodiments of the present application provide a computer-readable storage medium for storing computer program instructions, and the computer program causes the computer to execute the method in the second aspect or each possible implementation manner of the second aspect.

In a fifteenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer program instructions, and the computer program causes a computer to execute the method in the third aspect or each possible implementation manner of the third aspect.

In a sixteenth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, where the computer program instructions cause a computer to execute the method in the first aspect or in each possible implementation manner of the first aspect.

In a seventeenth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, where the computer program instructions cause a computer to execute the method in the second aspect or in each possible implementation manner of the second aspect.

In an eighteenth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, where the computer program instructions cause a computer to execute the method in the third aspect or in each possible implementation manner of the third aspect.

In a nineteenth aspect, an embodiment of the present application provides a terminal, including the communication device in the fourth aspect or in each possible implementation manner of the fourth aspect.

In a twentieth aspect, an embodiment of the present application provides a terminal, including the communication device in the fifth aspect or in each possible implementation manner of the fifth aspect.

In a twenty-first aspect, an embodiment of the present application provides a terminal, including the communication device in the sixth aspect or in each possible implementation manner of the sixth aspect.

Description of drawings

FIG. 1 shows a schematic diagram of a communication system 100 applicable to a sidelink transmission method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an interaction process of a communication method 200 provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of an interaction process of another communication method provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of an interaction process of a communication method 300 provided in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application;

FIG. 11 is another schematic block diagram of a communication device 500 provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a terminal device 600 provided in an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

The communication method provided by this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, wideband code division multiple access ( Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New air interface (New Radio, NR) system, evolution system of NR system, LTE on unlicensed spectrum

(LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum

(NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

In some embodiments, the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and can also be applied to an independent (Standalone, SA ) meshing scene.

In some embodiments, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to a licensed spectrum, Wherein, the licensed spectrum can also be regarded as a non-shared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

A terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

In this embodiment of the application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments, the network equipment may be a satellite, balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. In some embodiments, the network device may also be a base station installed on land, in water, or other locations.

In this embodiment of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

It should be understood that the present application does not limit the specific forms of the network device and the terminal device.

In order to facilitate understanding of the embodiment of the present application, the communication system applicable to the embodiment of the present application is described in detail first with reference to FIG. 1 . Fig. 1 shows a schematic diagram of a communication system applicable to the sidelink transmission method of the embodiment of the present application. As shown in FIG. 1 , the communication system 100 may include at least one network device and multiple terminal devices, for example, the network device 110 and the

terminal devices

121 and 122 shown in FIG. 1 . The network device 110 and each

terminal device

121 and 122 can communicate through wireless air interfaces respectively, and the terminal devices can communicate with each other through vehicle wireless communication technology. For example, the terminal device 121 and the terminal device 122 shown in FIG. 1 may communicate with each other.

It should be understood that FIG. 1 is only an example, showing a scenario where the terminal device 121 sends signaling and/or data to the terminal device 122, but this should not constitute any limitation to the present application. The terminal device 121 may also receive signaling and/or data sent by the terminal device 122 . This embodiment of the present application does not limit it.

It should also be understood that Fig. 1 is only an example, showing one network device and four terminal devices. But this should not constitute any limitation to the present application. The communication system 100 may also include more network devices, and may also include more or less terminal devices. This embodiment of the present application does not limit it.

In the communication system shown in FIG. 1 , data and signaling can be transmitted between terminal devices through sidelinks. The resources used by the terminal device to communicate via the sidelink may be allocated by the network device. In other words, the network device allocates resources for sidelink transmissions. For example, the terminal device 121 in FIG. 1 may send signaling and/or data to the terminal device 122 through resources allocated by the network device.

Sidelink (Sidelink, SL) for signaling and/or data interaction between terminal devices, which includes the following channel types: Physical Sidelink Control Channel (PSCCH), Physical Sidelink All or part of the Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Broadcast Channel (PSBCH) and Physical Sidelink Feedback Channel (PSFCH). Wherein, the PSCCH carries the first level control information, the PSSCH carries the second level control information and/or data, and the PSFCH carries the feedback information.

When a first terminal (such as the terminal device 121 in FIG. 1 ) transmits a data transmission block (transmit block, TB) to a second terminal (such as the terminal device 122 in FIG. 1 ), the first terminal sequentially sends the second terminal to the second terminal. The first-level control information, the second-level control information, and the side data, and the second terminal receives and decodes the first-level control information, the second-level control information, and the side data in sequence. Wherein, the sidestream data may be the TB that is initially transmitted, or the TB that is retransmitted.

In the process of receiving and decoding the second-level control information, the second terminal device needs to determine the number of resource elements (resource elements, REs) occupied by the second-level control information, and then based on the number of REs occupied by the second-level control information The second-level control information is decoded, for example, each CB in the TB is decoded.

The number of REs occupied by the second-level control information can be determined, for example, by the following formula (1):

Among them, O _SCI2 represents the payload size of the second-level control information; L _SCI2 represents the cyclic redundancy check CRC bit length of the second-level control information; R represents the modulation and coding indicated in the control information (such as the first-level control information) Scheme (Modulation and Coding Scheme, MCS) code rate corresponding to the index;

Indicates the modulation order of PSSCH or PSCCH;

Indicates the scaling factor of the code rate of the second-level control information relative to the PSSCH; α indicates the upper limit of the ratio of the number of REs occupied by the second-level control information to the available resources of the PSSCH, which is used to constrain the number of REs occupied by the second-level control information;

in

sl-lengthSymbols indicates the number of symbols contained in each SL slot configured by the resource pool,

It is equivalent to the number of symbols occupied by PSFCH in the resource pool. If the period of PFSCH is 0, then

If the period of PFSCH is 1, then

If the period of PFSCH is 2 or 4, it is determined according to the indication information carried in PSCCH

or

γ represents the number of REs defined to satisfy the requirement that the second-level control information occupies an integer number of physical resource blocks (physical resource blocks, PRBs).

The second-level control information is used to indicate some or all of the following items:

1. Hybrid Automatic Repeat reQuest (HARQ) thread number (process number): When the transmitted data is a retransmission of a data transmission block (transmit block, TB), its HARQ thread number remains unchanged.

2. New data indicator (NDI): used to indicate whether the data transmission on the current HARQ thread is new data or old data. NDI is flipped when new data appears, that is, if the NDI value on the HARQ thread is consistent with the last time, the transmitted data is the retransmitted data of the last transmitted TB, otherwise it is the newly transmitted TB.

3. Version number (Redundancy version, RV): Indicates the HARQ version number of this data transmission. TB transmission supports a total of 4 version numbers, which are used to generate different rate matching outputs, carry different redundant information, and improve the decoding reliability when different TB transmission versions are merged.

4. Source ID (Source ID): Indicates the source of the transmitted data.

5. Destination ID (Destination ID): Indicates the expected receiving ID of the transmitted data.

6. HARQ enabling information: indicates whether the receiving end performs HARQ feedback.

7. Service type indication information (Cast type indicator): used to indicate unicast, multicast, or broadcast.

8. Channel state information (Channel State Information, CSI) requirement: Indicates whether the sender is required to feed back CSI.

Through the above solution, the second terminal decodes the second-level control information from the first terminal to successfully receive the second-level control information, and receives side data according to the indication of the second-level control information.

For the scenario where the first terminal needs to retransmit data to the second terminal, the sidelink data sent by the first terminal to the second terminal may be a retransmitted TB. For example, after the first terminal receives the feedback information sent by the second terminal, According to the feedback information, it is determined that the last transmitted TB has not been received correctly, and then the TB is resent to the second terminal. However, even if part of the code block (CB) in the last transmitted TB was not received correctly, the entire TB is still retransmitted, resulting in low transmission efficiency.

In the scenario where the first terminal needs to retransmit data to the second terminal, if the sidelink data sent by the first terminal to the second terminal is to retransmit part or all of the CBG of the TB, the MCS indicated in the above-mentioned first-level control information The index will correspond to a reserved bit (reserved) in the MCS table, that is, the code rate R cannot be determined through the MCS index indicated by the first-level control information.

First, part or all of the CBGs of the retransmitted TB are described: a TB contains multiple CBs, and each CB is coded separately to realize the coding of the TB, that is, the coding of each CB is independent. The analysis shows that if a certain CB in a TB fails to be decoded, only the CB can be retransmitted without retransmitting the entire TB. In order to reduce the number of bits of feedback information at the CB granularity, the CBs in the TB can be grouped to obtain multiple For CBG, if all the CBs in the group are decoded correctly, the CBG will feed back ACK, otherwise, it will feed back NACK. The sending end device may determine whether to retransmit the CBG according to the feedback information of the CBG, and carry the CBG index indication information in the retransmission control information, that is, indicate the retransmitted CBG. Then, when retransmitting the CBG, it is no longer necessary to determine the number of effective bits for this transmission according to the above-mentioned TB determination process, but to determine the original number of bits carried according to the index indication information of the CBG. In this case, the MCS index carried in the control information no longer indicates the code rate.

For example, see Table 1 below, when the sidelink data sent by the first terminal to the second terminal is the CBG of the retransmitted TB, the MCS index I _MCS indicated in the control information is one of 28 to 31, and the I _MCS is 28 to 31 When one of them, there is no corresponding code rate.

Table 1

Therefore, neither the first terminal nor the second terminal can determine the number of REs occupied by the second-level control information based on the above scheme. On the one hand, the first terminal cannot encode the second-level control information, and on the other hand, the second terminal The second-level control information cannot be successfully decoded, and thus the side-bound data cannot be received.

In the embodiment of the present application, in order to solve the problem that the terminal device can only retransmit the entire TB in the process of retransmitting data on the sidelink, when the sidelink data is at least one CBG of the TB, the first code rate is introduced. Based on the first code rate, the first terminal can determine the number of REs occupied by the second-level control information and encode the second-level control information, and the second terminal can determine the number of REs occupied by the second-level control information from the first terminal. quantity, and decode this second-level control information. The retransmission of part or all of the CBG of the TB is realized, and the retransmission of the entire TB is avoided, thereby improving the transmission efficiency.

Another understanding is that in the embodiment of the present application, by introducing the first code rate, the association between the above-mentioned second-level control information and the data channel code rate is released, so that the second terminal device does not need to complete receiving the second-level In the case of control information, the code rate of the data channel can be obtained, and the number of REs occupied by the second-level control information can be determined based on the first code rate, and then the second-level control information can be decoded.

It should be noted that a TB can be divided into at least one CBG, and each CBG includes at least one CB. At least one incorrectly transmitted CB should be included in the retransmitted CBG.

In order to facilitate the understanding of the embodiments of the present application, the terms involved in the present application are briefly described first.

Resource Occupancy Quantity: The resource occupation quantity is the number of REs. In the embodiment of the present application, when the second-level control information is transmitted through a multiple-in multiple-out (MIMO) layer, the number of resources occupied is the number of coded symbols of the second-level control information; When transmitting through two or more MIMO layers, the number of resources occupied is the number of coded symbols of the second-level control information on one MIMO layer.

In order to facilitate the understanding of the embodiments of the present application, the following explanations are made:

First, in the embodiments shown below, the first, second and various numbers are only for convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, distinguishing between different terminal devices, etc.

Second, "predefinition" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). Do limited.

"Pre-configuration" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and can also be pre-configured through signaling, such as network devices through Signaling pre-configuration, etc., the present application does not limit the specific implementation.

Third, the "protocol" involved in this embodiment of the application may refer to a standard protocol in the communication field, for example, it may include LTE protocol, NR protocol and related protocols applied in future communication systems, which is not limited in this application.

Fourth, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.

Fifth, in this embodiment of the application, descriptions such as "when", "in the case of ...", "if" and "if" all refer to the equipment (such as terminal equipment or Network equipment) will make corresponding processing, which is not a time limit, and does not require equipment (such as terminal equipment or network equipment) to make judgments during implementation, nor does it mean that there are other restrictions.

Sixth, in the embodiment of the present application, the second terminal device correctly receives the control information and/or side data, that is, correctly decodes the control information and/or side data. Hereinafter, "receiving" and "decoding" are used interchangeably, and their meanings are the same.

The lateral transmission method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the following is only for ease of understanding and description, and the method provided in the embodiment of the present application is described in detail by taking the interaction between the first terminal device and the second terminal device as an example. The first terminal device and the second terminal device may be, for example, terminal equipment in the communication system shown in FIG. 1 . For example, the first terminal device may be the terminal device 121 in FIG. 1 , and the second terminal device may be the terminal device 122 in FIG. 1 .

However, it should be understood that this should not constitute any limitation on the execution subject of the method provided in this application. As long as the method provided by the embodiment of the present application can be executed by running the program recorded with the code of the method provided in the embodiment of the present application, it can be used as the subject of execution of the method provided in the embodiment of the present application. For example, the first terminal device shown in the following embodiments may also be replaced with components in the first terminal device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs. The second terminal device may also be replaced with components in the second terminal device, such as a chip, a chip system, or other functional modules capable of invoking programs and executing programs.

FIG. 2 is a schematic diagram of an interaction process of a communication method 200 provided by an embodiment of the present application. As shown in FIG. 2, the method 200 may include at least part of the content in S210 to S230. Each step in the method 200 will be described in detail below.

In S210, the first terminal device determines the amount of resources occupied by the second-level control information according to the first code rate.

Wherein, the first code rate may be preset. In an implementation manner, the first code rate may be preset in the configuration information of the resource pool. In other words, the network device sends the configuration information of the resource pool to each terminal device, and the configuration information of the resource pool includes the preset first code rate. One bit rate. In another implementation manner, the first code rate may be defined by a protocol. In one implementation, the first code rate may be preset in the first terminal device or the second terminal device, and the terminal device preset with the first code rate may send the first code rate to other terminal devices , so that the first code rate is synchronized between terminal devices that need to perform sidelink transmission.

In some cases, the first code rate may be determined according to a preset first correspondence, where the first correspondence is a correspondence between the first parameter and the code rate. In an implementation manner, the first corresponding relationship may be preset in the configuration information of the resource pool. In other words, the network device sends the configuration information of the resource pool to each terminal device, and the configuration information of the resource pool includes the preset first One-to-one correspondence. In another implementation manner, the first correspondence may be defined by a protocol. In yet another implementation, the first correspondence may be preset in the first terminal device or the second terminal device, and the terminal device with the first correspondence preset may send the first correspondence to other terminal devices The instruction information is used to synchronize the first correspondence between terminal devices that need to perform sidelink communication, and then each terminal device can obtain the same first code rate based on the same first correspondence.

In some cases, the first code rate or the first corresponding relationship may also be defined by the protocol.

It should be noted that, for the first terminal device, the value of the first parameter may be indicated by higher layer signaling (such as RRC layer signaling). Optionally, the first parameter may be a modulation order and/or a transmission priority. Wherein, the transmission priority may be the priority of the first information in the following S220, or the service priority of the receiving end (for example, the second terminal device) of the first information.

As mentioned above, the resource occupation quantity is the quantity of REs occupied by the second-level control information. The first terminal device can determine the amount of resources occupied by the second-level control information according to the first code rate through any implementation method. For example, the amount of resources occupied by the second-level control information can be calculated according to the above formula (1). The implementation of the present application Examples are not limited to this.

For the first terminal device, the resource occupation amount is used to send the second-level control information. Exemplarily, the first terminal device may encode the second-level control information based on the resource occupation amount.

In S220, the first terminal device sends the first information to the second terminal device. Correspondingly, the second terminal device receives the first information from the first terminal device. Wherein, the first information includes control information and side data, the side data includes at least one retransmitted CBG, and the control information includes second-level control information.

Exemplarily, the first terminal device encodes the second-level control information based on the first code rate, and then sends it to the second terminal device.

It can be understood that the sidelink data in the first information is used to retransmit at least one CBG, and the control information in the first information carries indication information of the at least one CBG to be retransmitted.

Optionally, the control information may also include first-level control information.

In the process of receiving the first information, the second terminal device needs to decode the second-level control information, obtain the second-level control information after correct decoding, and receive side data according to the instruction of the second-level control information. If the second terminal device fails to correctly decode the second-level control information, that is, the second-level control information cannot be correctly received, and thus the sidelink data cannot be correctly received. Therefore, whether the second terminal device can correctly receive the first information in S220 is related to the execution result of S230 described below.

In S230, the second terminal device determines the amount of resources occupied by the second-level control information according to the first code rate.

The first code rate is the same code rate as the first code rate used by the first terminal device in S210. The relevant description of the first code rate is the same as that in S210, and will not be repeated here.

It should be noted that, for the second terminal device, the value of the first parameter may be indicated by control information in the first information, for example, may be indicated by first-level control information. Optionally, the first parameter may be a modulation order and/or a transmission priority. Wherein, the transmission priority may be the priority of the first information, or the service priority of the receiving end (for example, the second terminal device) of the first information.

For the second terminal device, the resource occupation amount is used to receive the second-level control information. Exemplarily, the second terminal device may decode the second-level control information based on the resource occupation quantity.

The second terminal device can determine the resource occupation quantity of the second-level control information according to the first code rate through any implementation method, for example, the resource occupation quantity of the second-level control information can be calculated according to the above formula (1). Examples are not limited to this.

The second terminal device can decode the second-level control information according to the amount of resources occupied by the second-level control information, and has realized the correct reception of the second-level control information, and then correctly receives the side according to the indication of the second-level control information At least one CBG in the row data.

In the embodiment of the present application, the first terminal device determines the resource occupation quantity of the second-level control information according to the first code rate, and sends the first information for retransmitting at least one CBG to the second terminal device based on the resource occupation quantity, The second terminal device can receive the first information from the first terminal device based on the first code rate, avoiding that each terminal always retransmits the entire TB when retransmitting through the sidelink, and improves the retransmission efficiency of the sidelink transmission .

In some embodiments, the first terminal device and the second terminal device also need to obtain the first code rate. When the first code rate is a preset code rate, the first terminal device can obtain the first code rate from the configuration information of the resource pool sent by the network device or obtain the first code rate from the side data sent by the second terminal device rate, the second terminal device can obtain the first code rate from the configuration information of the resource pool sent by the network device or obtain the first code rate from the control information sent by the first terminal device; the first code rate is based on the preset When the first correspondence is determined, the first terminal device may acquire the value of the first parameter from high-level signaling, and determine the first code rate in the first correspondence according to the value of the first parameter, and the second terminal device may obtain the first code rate from the The data of the first parameter is obtained from the control information in the first information (for example, the first-level control information), and the first code rate is determined in the first corresponding relationship according to the value of the first parameter.

In this embodiment of the present application, the first parameter may include a modulation order, or a transmission priority, or a modulation order and a transmission priority. The implementation of determining the first code rate based on the first correspondence relationship will be exemplarily described below for the above three possible first parameters respectively.

Implementation method 1. The first parameter includes the modulation order:

In the first correspondence, one modulation order corresponds to one code rate, and the code rate corresponding to each modulation order may be determined based on at least one code rate corresponding to the modulation order in the MCS mapping relationship.

It should be noted that the MCS mapping relationship at least includes the mapping relationship between the modulation order and the code rate. In some embodiments, the MCS mapping relationship may be an MCS table, such as the aforementioned Table 1.

As shown in Table 1, the code rates corresponding to modulation order 2 in the MCS table include 120/1024, 193/1024, 308/1024, 449/1024, and 602/1024, where "/" is a division sign.

Any one of the code rates corresponding to at least one code rate corresponding to the modulation order 2 in the MCS table is the code rate corresponding to the modulation order 2 in the first correspondence; or the highest code rate among the code rates corresponding to the modulation order 2 in the MCS table rate, such as 602/1024, is the code rate corresponding to the modulation order 2 in the first correspondence; or the lowest code rate among the code rates corresponding to the modulation order 2 in the MCS table, such as 120/1024, is the modulation order 2 Corresponding code rate; or the median (also known as the median) in the code rate corresponding to the modulation order 2 in the MCS table, such as 308/1024, is the code rate corresponding to the modulation order 2 in the first correspondence; Or the average value of all code rates in the code rate corresponding to modulation order 2 in the MCS table, for example, the average value of 120/1024, 193/1024, 308/1024, 449/1024 and 602/1024 is 334.4/1024, which is the first Code rate corresponding to modulation order 2 in the one-to-one correspondence.

The other modulation orders in the MCS table are similarly processed to obtain the code rate corresponding to each modulation order in the first correspondence. Exemplarily, the code rate corresponding to each modulation order in the first correspondence relationship may be based on the same or different correspondence strategies described above. For example, the code rate corresponding to each modulation order in the first correspondence is the maximum value of at least one code rate corresponding to the modulation order in the MCS table; or the modulation order 2 in the first correspondence corresponds to The code rate is the maximum value of at least one code rate corresponding to the modulation order 2 in the MCS table, and the code rate corresponding to the modulation order 4 in the first correspondence relationship is one of the at least one code rate corresponding to the modulation order 4 in the MCS table The minimum value, the code rate corresponding to the modulation order 6 in the first correspondence relation is the average value of at least one code rate corresponding to the modulation order 6 in the MCS table, and so on.

The following Table 2 is an example of the first correspondence, the first correspondence shown in Table 2 corresponds to the MCS table shown in Table 1, that is, the code rate corresponding to each modulation order in the first correspondence is based on The modulation order is determined by the corresponding code rate in the MCS table. As an example, in the first correspondence shown in Table 2, the minimum code rate among at least one code rate corresponding to the modulation order in the MCS table is used as the code rate corresponding to the modulation order.

Table 2

调制阶数(Q _m) Modulation order (Q _m )	码率(R)×1024Code rate (R)×1024
22	120120
44	378378
66	466466

88	682.5682.5

It should be noted that the MCS table in this embodiment is only an example of the MCS mapping relationship, and should not constitute any limitation to this application.

It should be noted that, in the first correspondence, the code rate corresponding to the modulation order may also be a preset code rate. In this case, the preset code rate may have nothing to do with the code rate in the MCS mapping relationship, and it may be any value greater than 0 and less than or equal to 1, for example, it may be 0.1, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6 , 0.7, 0.75, 0.8, 0.9, 1, etc. Exemplarily, the code rates corresponding to each modulation order in the first correspondence are preset code rates; or the code rates corresponding to part of the modulation orders in the first correspondence are preset code rates, and the rest The code rate corresponding to the modulation order may be determined from the MCS mapping relationship, for example, it may be the lowest code rate, the highest code rate, or the average of at least one code rate among at least one code rate corresponding to the modulation order in the MCS mapping relationship value.

In some embodiments of the first implementation manner, the MCS mapping relationship is not unique, in other words, multiple MCS mapping relationships are pre-configured. For example, a network device is configured with multiple MCS mapping relationships. Then the first terminal device needs to determine the first MCS mapping relationship corresponding to the first correspondence. For example, the first terminal device determines the first MCS mapping relationship according to the MCS table indication information, and then determines the first MCS mapping relationship corresponding to the first MCS mapping relationship. first correspondence. It should be noted that the MCS table indication information may be indicated by a high-level instruction of the first terminal device.

Similarly, in the case of multiple MCS mapping relationships, the second terminal device determines the first MCS mapping relationship according to the indication information of the MCS table, and then determines the first corresponding relationship corresponding to the first MCS mapping relationship. The second terminal device may obtain the MCS table indication information from the first information from the first terminal device, for example, obtain the MCS table indication information from control information (such as first control information) in the first information. Optionally, the relevant description of the first information may refer to the embodiment corresponding to FIG. 2 , which will not be repeated here.

It should be noted that when the MCS mapping relationship is unique, the MCS table indication information may also be obtained, and the table indication information may determine whether the preconfigured MCS mapping relationship is the required MCS mapping relationship.

It should be understood that, in combination with Table 1 and Table 2, in the process of determining the first corresponding relationship based on the MCS mapping relationship, the MCS mapping relationship may be understood as the first MCS mapping relationship.

In the first implementation manner, the first corresponding relationship may be generated by the network device, the first terminal device, or the second terminal device.

In the first implementation manner, acquiring the first code rate by the first terminal device specifically includes S241 to S243 as shown in FIG. 3 .

S241. The first terminal device acquires an MCS index field.

For example, the MCS index field is obtained from high-layer signaling.

S242. The first terminal device determines the modulation order corresponding to the MCS index field in the first MCS mapping relationship.

S243. The first terminal device determines the first code rate according to the modulation order corresponding to the MCS index field and the first correspondence.

It should be noted that the MCS index field is used to indicate the value of the MCS index, for example, the MCS index field may indicate any one of the values in the first column in Table 1.

For example, referring to Table 1, assuming that the MCS index field is 28, in the first MCS mapping relationship, the modulation order corresponding to the MCS index 28 is 2. Referring to Table 2, in the first correspondence determined by the first terminal device, the code rate corresponding to the modulation order 2 is 120/1024, which is the first code rate.

In this implementation mode 1, after the first terminal device determines the first code rate, it can determine the resource occupancy quantity of the second-level control information according to the first code rate, and send the second-level control information and at least For the specific implementation process of the first information of a CBG, reference may be made to the relevant descriptions of S210 and S220 in the embodiment corresponding to FIG. 2 .

In the first implementation manner, acquiring the first code rate by the second terminal device specifically includes S251 and S252 as shown in FIG. 4 .

S251. The second terminal device determines the modulation order corresponding to the MCS index field in the first MCS mapping relationship;

S252. The second terminal device determines the first code rate according to the modulation order corresponding to the MCS index resource and the first correspondence.

It should be noted that the second terminal device receives the first information from the first terminal device in the above S220, that is, the MCS index field may be obtained from the control information of the first information. The relevant description of the first information can refer to the embodiment corresponding to FIG. 2 , which will not be repeated here.

The aforementioned S251 and S252 have the same or similar implementation manners as those of S242 and S243 in FIG. 3 , which will not be repeated here.

In Embodiment 1, after the second terminal device determines the first code rate, it can determine the amount of resources occupied by the second-level control information according to the first code rate, and then decode the second-level control information. The specific implementation process can refer to Figure 2 The description related to S230 in the corresponding embodiment.

It should be noted that the embodiment shown in FIG. 4 may also be combined with the embodiment shown in FIG. 3 , and this implementation mode 1 only uses the combination with the embodiment shown in FIG. 2 as an example for illustration.

In this first implementation, the code rate corresponding to each modulation order in the first correspondence is determined based on the code rate corresponding to each modulation order in the MCS mapping relationship, so that the first code rate obtained by the first terminal device and the MCS index The modulation orders corresponding to the fields are related, therefore, the second-level control information encoded based on the first code rate has higher transmission reliability.

Implementation method 2. The first parameter includes the transmission priority:

In the first correspondence, one transmission priority corresponds to one code rate.

In the second implementation manner, the acquisition of the first code rate by the first terminal device specifically includes S261 as shown in FIG. 5 .

In S261, the first terminal device acquires the target transmission priority. For example, the target transmission priority is obtained from high-level signaling. The target transmission priority is the priority of the sideline data to be transmitted, and the target transmission priority is used to indicate a specific value or information of the priority. For example, the numerical value indicating the transmission priority is 1, or the information indicating the transmission priority is high or low.

In S262, the first terminal device determines the first code rate according to the target transmission priority and the first corresponding relationship.

In the second implementation, after the first terminal device determines the first code rate, it can determine the resource occupation quantity of the second-level control information according to the first code rate, and send the second-level control information and at least For the specific implementation process of the first information of a CBG, reference may be made to the relevant descriptions of S210 and S220 in the embodiment corresponding to FIG. 2 .

In the second implementation manner, the acquisition of the first code rate by the second terminal device specifically includes S271 as shown in FIG. 6 .

In S271, the second terminal device determines the first code rate according to the first corresponding relationship of the target transmission priority.

It should be noted that, when the second terminal device receives the first information from the first terminal device in the above S220, it can obtain the target transmission priority from the control information of the first information. The relevant description of the first information can refer to the embodiment corresponding to FIG. 2 , which will not be repeated here.

The above S271 has the same or similar implementation manner as that of S262 shown in FIG. 5 , which will not be repeated here.

In the second embodiment, after the second terminal device determines the first code rate, it can determine the resource occupation quantity of the second-level control information according to the first code rate, and then decode the second-level control information. The specific implementation process can refer to Figure 2 The description related to S230 in the corresponding embodiment.

It should be noted that the embodiment shown in FIG. 6 may also be combined with the embodiment shown in FIG. 5 , and this implementation mode 1 only uses the combination with the embodiment shown in FIG. 2 as an example for description.

In the second implementation, the first code rate obtained by the first terminal device is related to the target transmission priority. For example, when the target transmission priority is higher, the first code rate is higher. Therefore, the transmission priority of the second-level control information is When the level requirements are higher, the second-level control information encoded based on the first code rate has higher transmission reliability.

Implementation method 3. The first parameter includes transmission priority and modulation order:

In the first correspondence, there is a one-to-one correspondence among the transmission priority, the modulation order and the code rate. Specifically, each of the p transmission priorities in the first correspondence corresponds to q modulation orders, where the i-th transmission priority among the p transmission priorities and the j-th modulation order among the q modulation orders The modulation order corresponds to a preset code rate, p≥i≥1, q≥j≥1. Table 3 is taken as an example below for illustration.

Referring to Table 3, in the first correspondence, there are 2 transmission priorities, and the levels of the transmission priorities can be represented by numerical values. For example, the higher the transmission priority level, the lower the corresponding priority value, or the lower the transmission priority level, the lower the corresponding priority value.

In Table 3, each transmission priority corresponds to 4 modulation orders, for example, each transmission priority corresponds to modulation orders 2, 4, 6, and 8. The combinations of 2 transmission priorities and 4 modulation orders are combined one by one After that, it corresponds to a code rate, such as code rates R1 to R7. It should be noted that R1 to R4 are only used to represent specific values of the code rate R.

table 3

传输优先级transmission priority	调制阶数Q _m Modulation order Q _m	码率RCode rate R
11	22	R1R1
22	22	R2R2
11	44	R3R3
22	44	R4R4
11	66	R5R5
22	66	R6R6
11	88	R7R7
22	88	R8R8

It should be understood that, for ease of understanding, Table 3 shows priority values ranging from 1 to 4, but this should not constitute any limitation to the present application. This application does not impose any limitation on the value range of the transmission priority. For example, the value range can also be 0 to 1.

It should be noted that the code rate in the first correspondence relationship may be a preset code rate, for example, R1 to R8 in Table 3 may all be values of a preset code rate.

In the third implementation manner, the acquisition of the first code rate by the first terminal device specifically includes S281 to S283 as shown in FIG. 7 .

S281. The first terminal device acquires the MCS index field and the target transmission priority;

S282. The first terminal device determines the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

S283. The first terminal device determines the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.

Exemplarily, the first terminal device may obtain the MCS index field and the target transmission priority from high-layer signaling.

It should be noted that the target transmission priority in this implementation is used to indicate a specific value or information of the transmission priority. For example, the numerical value indicating the transmission priority is 1, or the information indicating the transmission priority is high or low.

For ease of understanding, description will be made by taking the first MCS mapping relationship as the MCS table shown in Table 1 and the first correspondence relationship as the correspondence relationship shown in Table 3 as an example. The MCS index field obtained by the first terminal device is 28 in Table 1, and the target transmission priority is 1 in Table 3. The first terminal device determines that the MCS index field 28 corresponds to modulation order 2 in the first MCS mapping relationship, and then The first terminal device determines the first code rate R1 according to the modulation order 2 and the transmission priority 1 in the first correspondence shown in Table 3.

In the third implementation mode, after the first terminal device determines the first code rate, it can determine the resource occupation quantity of the second-level control information according to the first code rate, and send the second-level control information and at least For the specific implementation process of the first information of a CBG, reference may be made to the relevant descriptions of S210 and S220 in the embodiment corresponding to FIG. 2 .

In the third implementation manner, the acquisition of the first code rate by the second terminal device specifically includes S291 and S292 as shown in FIG. 8 .

S291. The second terminal device determines the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

S292. The second terminal device transmits the priority according to the target. The modulation order corresponding to the MCS index field and the first corresponding relationship determine the first code rate.

It should be noted that the second terminal device receives the first information from the first terminal device in the above S220, that is, the MCS index field and the target transmission priority can be obtained from the control information of the first information. The relevant description of the first information can refer to the embodiment corresponding to FIG. 2 , which will not be repeated here.

The above S291 and S292 have the same or similar implementation manners as S282 and S283 in FIG. 7 respectively, and will not be repeated here.

In Embodiment 3, after the second terminal device determines the first code rate, it can determine the amount of resources occupied by the second-level control information according to the first code rate, and then decode the second-level control information. The specific implementation process can refer to Figure 2 The description related to S230 in the corresponding embodiment.

It should be noted that the embodiment shown in FIG. 8 may also be combined with the embodiment shown in FIG. 7 , and this implementation mode 1 only uses the combination with the embodiment shown in FIG. 2 as an example for illustration.

In the third implementation mode, the first code rate obtained by the first terminal device is related to the target transmission priority and the modulation order corresponding to the MCS index field, and the first code rate is calculated from two perspectives of the transmission priority and the modulation order. constraints, so that the second-level control information encoded based on the first code rate has higher transmission reliability.

FIG. 9 is a schematic diagram of an interaction process of a communication method 300 provided by an embodiment of the present application. In the embodiment shown in FIG. 9 , the method provided in the embodiment of the present application is described by taking the interaction between the network device and the terminal device as an example. The network device may be, for example, the network device 110 in the communication system shown in FIG. 1, and the terminal device may be, for example, the terminal devices 121 and/or 122 in the communication system shown in FIG. The first terminal device and/or the second terminal device in an embodiment.

As shown in FIG. 9 , the method 300 may include S310. The S310 will be described in detail below.

In S310, the network device sends the configuration information of the resource pool to at least one terminal device; correspondingly, each terminal device receives the configuration information of the resource pool from the network device.

It should be noted that the resource pool is a transmission resource used for sidelink transmission. It can also be said that the resource pool provides transmission resources for sidelink transmission. The configuration information of the resource pool includes a first code rate or a first correspondence, and the first correspondence is a correspondence between a first parameter and a code rate.

For the relevant description of the first code rate and the first corresponding relationship in this embodiment, reference may be made to the description of the corresponding embodiment in FIG. 2 , and details are not repeated here.

In some embodiments, the first parameter includes modulation order and/or transmission priority.

In an implementation manner, when the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate is based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship. One code rate is determined, and the first MCS mapping relationship corresponds to the first corresponding relationship in at least one preset MCS mapping relationship.

Optionally, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; or, the code rate corresponding to the modulation order is the first In an MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, in the first MCS mapping relationship, the code rate corresponding to the modulation order is at least one code rate corresponding to the modulation order rate; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, any code rate in at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order The code rate is the median value of at least one code rate corresponding to the modulation order in the first MCS mapping relationship.

In another implementation manner, when the first parameter includes a modulation order, the code rate corresponding to the modulation order in the first correspondence may be a preset code rate.

In some embodiments, the configuration information of the resource pool further includes at least one MCS mapping relationship. It should be noted that if the configuration information of the resource pool includes one MCS mapping relationship, the MCS mapping relationship is the first MCS mapping relationship; if the configuration information of the resource pool includes two or more MCS mapping relationships, the two The first MCS mapping relationship is included in the one or more MCS mapping relationships.

It should be noted that, in the case that the network device is pre-configured with at least two MCS mapping relationships, each MCS mapping relationship should correspond to a first corresponding relationship.

As mentioned above, when the network device is pre-configured with at least two MCS mapping relationships, the terminal device may indicate the first MCS mapping relationship to be used through the MCS table indication information. Furthermore, a first corresponding relationship corresponding to the first MCS mapping relationship is determined.

In this embodiment, the network device sends the configuration information of the resource pool to at least one terminal device, so that the terminal device can obtain the first code rate for retransmission of at least one CBG, and then realize the retransmission during sidelink transmission between terminal devices. It is possible to transmit part or all of the CBG of a TB without always retransmitting the entire TB.

Above, the method provided by the embodiment of the present application is described in detail with reference to FIG. 2 to FIG. 9 . Next, the device provided by the embodiment of the present application will be described in detail with reference to FIG. 10 to FIG. 11 .

FIG. 10 is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application. As shown in FIG. 10 , the communication device 400 may include a processing unit 410 and a transceiver unit 420 .

Optionally, the communication device 400 may correspond to the first terminal device in the foregoing method embodiments. The communication device 400 may include a unit for performing the method performed by the first terminal device in any one of the above method embodiments. In addition, each unit in the communication device 400 and the above-mentioned other operations and/or functions are respectively intended to implement a corresponding flow of the method in any of the above-mentioned embodiments.

Wherein, when the communication device 400 is used to execute the method in any one of the embodiments in FIG. 2 to FIG. 8 , the processing unit 410 can be used to determine the amount of resources occupied by the second-level control information according to the first code rate, and the first The code rate is preset or determined according to a preset first correspondence, the first correspondence is the correspondence between the first parameter and the code rate, and the amount of resource occupation is used to send the second-level control information; the transceiver unit 420 may be configured to send first information, the first information includes control information and side data, the side data includes at least one CBG retransmitted, and the control information includes the second-level control information .

Optionally, the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is based on the first MCS mapping relationship. The at least one code rate corresponding to the modulation order is determined, and the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.

Optionally, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the code rate corresponding to the modulation order In the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, An average value of at least one code rate corresponding to the modulation order.

Optionally, the first parameter includes a modulation order, and in the first correspondence, the code rate corresponding to the modulation order is a preset code rate.

Optionally, in the method shown in FIG. 3 , the processing unit 410 is further configured to: acquire an MCS index field; determine a modulation order corresponding to the MCS index field in the first MCS mapping relationship; The modulation order corresponding to the MCS index field and the first corresponding relationship determine the first code rate.

Optionally, the processing unit 410 is further configured to: acquire MCS table indication information, where the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.

Optionally, in the method shown in FIG. 5 , the first parameter includes a transmission priority, and the processing unit 410 is further configured to: acquire a target transmission priority; According to the corresponding relationship, the first code rate is determined.

Optionally, in the method described in FIG. 7 , the first parameter includes a transmission priority and a modulation order, and the processing unit 410 is further configured to: acquire an MCS index field and a target transmission priority; Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the corresponding relationship; according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence relationship, Determine the first code rate.

Optionally, the first code rate is preset in configuration information of a resource pool, and the resource pool is a transmission resource pre-configured by a network device for sidelink transmission.

Optionally, the first correspondence is preset in configuration information of a resource pool, and the resource pool is a transmission resource preconfigured by the network device for sidelink transmission.

It should be understood that the specific process for each unit to perform the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, details are not repeated here.

Optionally, the communication device 400 may correspond to the second terminal device in any of the above method embodiments, and the communication device 400 may include a unit for executing the method performed by the second terminal device in any of the above method embodiments. In addition, each unit in the communication device 400 and the above-mentioned other operations and/or functions are respectively intended to implement a corresponding process in any one of the above-mentioned method embodiments.

Wherein, when the communication device 400 is used to execute the method in any one of the embodiments in FIG. 2 to FIG. 8 , the transceiver unit 420 can be used to receive first information, the first information includes control information and side data, and the side The line data includes at least one CBG retransmitted, and the control information includes second-level control information; the processing unit 410 can be configured to determine the resource occupation quantity of the second-level control information according to the first code rate, and the resource occupation quantity It is used to receive the second-level control information; wherein, the first code rate is preset, or determined according to a preset first correspondence, and the first correspondence is the first parameter and the code rate correspondence.

Optionally, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the code rate corresponding to the modulation order In the first MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, An average code rate of at least one code rate corresponding to the modulation order.

Optionally, in the method shown in FIG. 4 , the control information includes an MCS index field, and the processing unit 410 is further configured to: determine the modulation corresponding to the MCS index field in the first MCS mapping relationship Order: determine the first code rate according to the modulation order corresponding to the MCS index field and the first corresponding relationship.

Optionally, the control information includes MCS table indication information, and the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.

Optionally, in the method shown in FIG. 6 , the first parameter includes a transmission priority, the control information includes a target transmission priority, and the processing unit 410 is further configured to: according to the target transmission priority and The first corresponding relationship determines the first code rate.

Optionally, in the method shown in FIG. 8, the first parameter includes a transmission priority and a modulation order, the control information includes an MCS index field and a target transmission priority, and the processing unit 410 is further configured to: Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence; according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first A corresponding relationship, determine the first code rate.

Optionally, the communication device 400 may correspond to the network device in any of the above method embodiments, and the communication device may include a unit configured to execute the method performed by the network device in any of the above method embodiments. Moreover, each unit in the communication device 400 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding process in any one of the above-mentioned method embodiments.

Wherein, when the communication device 400 is used to execute the method in any one of the embodiments in FIG. 2 to FIG. 8 , the transceiver unit 420 can be used to send configuration information of a resource pool to at least one terminal; For transmission resources for link transmission, the configuration information includes a first code rate or a first correspondence, where the first correspondence is a correspondence between a first parameter and a code rate.

Optionally, the first parameter includes modulation order and/or transmission priority.

Optionally, the first parameter includes a modulation order, a modulation order in the first correspondence corresponds to a code rate, and the code rate is based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship It is determined that the first MCS mapping relationship corresponds to the first corresponding relationship in at least one preset MCS mapping relationship.

Optionally, the code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; the code rate corresponding to the modulation order is in the first MCS mapping relationship. In an MCS mapping relationship, the highest code rate among at least one code rate corresponding to the modulation order; or, the code rate corresponding to the modulation order is in the first MCS mapping relationship, at least one code rate corresponding to the modulation order The average code rate of the code rate.

Optionally, the configuration information also includes at least one MCS mapping relationship.

When the communication device 400 is a terminal device (such as a first terminal device or a second terminal device), the transceiver unit 420 in the communication device 400 can be implemented by a transceiver, for example, it can correspond to the communication device 500 shown in FIG. 11 The transceiver 520 in the communication apparatus 400, or the transceiver 620 in the terminal device 600 shown in FIG. The processor 510 in the apparatus 500, or the processor 610 in the terminal device 600 shown in FIG. 12 .

When the communication device 400 is a chip or system-on-a-chip configured in a terminal device (such as a first terminal device or a second terminal device), the transceiver unit 420 in the communication device 400 may be implemented through an input/output interface, a circuit, etc., The processing unit 410 in the communication device 400 may be implemented by a processor, a microprocessor, or an integrated circuit integrated on the chip or the chip system.

Fig. 11 is another schematic block diagram of a communication device 500 provided by an embodiment of the present application. As shown in FIG. 11 , the apparatus 500 may include: a processor 510 , a transceiver 520 and a memory 530 . Wherein, the processor 510, the transceiver 520 and the memory 530 communicate with each other through an internal connection path, the memory 530 is used to store instructions, and the processor 510 is used to execute the instructions stored in the memory 530 to control the transceiver 520 to send signals and /or to receive a signal.

It should be understood that the communication device 500 may correspond to the first terminal device or the second terminal device in the above method embodiments, and may be used to perform various steps and procedures performed by the first terminal device or the second terminal device in the above method embodiments. /or process. Optionally, the memory 530 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. The memory 530 may be an independent device, or may be integrated in the processor 510 . The processor 510 may be used to execute the instructions stored in the memory 530, and when the processor 510 executes the instructions stored in the memory, the processor 510 is used to execute the above-mentioned method corresponding to the first terminal device or the second terminal device Various steps and/or processes of the embodiments.

Optionally, the communication device 500 is the first terminal device in the foregoing embodiments.

Optionally, the communication device 500 is the second terminal device in the foregoing embodiments.

Wherein, the transceiver 520 may include a transmitter and a receiver. The transceiver 520 may further include an antenna, and the number of antennas may be one or more. The processor 510, memory 530 and transceiver 520 may be devices integrated on different chips. For example, the processor 510 and the memory 530 may be integrated in a baseband chip, and the transceiver 520 may be integrated in a radio frequency chip. The processor 510, the memory 530 and the transceiver 520 may also be devices integrated on the same chip. This application is not limited to this.

Optionally, the communication device 500 is a component configured in the first terminal device, such as a chip, a chip system, and the like.

Optionally, the communication device 500 is a component configured in the second terminal device, such as a chip, a chip system, and the like.

Wherein, the transceiver 520 may also be a communication interface, such as an input/output interface, a circuit, and the like. The transceiver 520 , the processor 510 and the memory 520 may be integrated into the same chip, such as a baseband chip.

FIG. 12 is a schematic structural diagram of a terminal device 600 provided in an embodiment of the present application. The terminal device can be applied to the system shown in FIG. 1 . As shown in FIG. 10 , the terminal device 600 includes a processor 610 and a transceiver 620 . Optionally, the terminal device 600 further includes a memory 630 . Among them, the processor 610, the transceiver 620 and the memory 630 can communicate with each other through an internal connection path, and transmit control and/or data signals. Call and run the computer program to control the transceiver 620 to send and receive signals. Optionally, the terminal device 600 may further include an antenna 640, configured to transmit the uplink data or uplink control signaling output by the transceiver 620 through wireless signals.

The processor 610 and the memory 630 may be combined into a processing device, and the processor 610 is configured to execute the program codes stored in the memory 630 to realize the above functions. During specific implementation, the memory 630 may also be integrated in the processor 610 , or be independent of the processor 610 . The processor 610 may correspond to the processing unit 410 in FIG. 10 or the processor 510 in FIG. 11 .

The above-mentioned transceiver 620 may correspond to the transceiver unit 420 in FIG. 10 or the transceiver 520 in FIG. 11 . The transceiver 620 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.

Optionally, the terminal device 600 may further include a power supply 650, configured to provide power to various devices or circuits in the terminal device 600.

In addition, in order to make the functions of the terminal device more perfect, the terminal device 600 may also include one or more of an input unit 660, a display unit 670, an audio circuit 680, a camera 690, and a sensor 700. The audio The circuitry may also include a speaker 680a, a microphone 680b, and the like.

It should be understood that the terminal device 600 shown in FIG. 12 can implement various processes involving the first terminal device, or various processes of the second terminal device in any of the foregoing method embodiments. The operations and/or functions of the various modules in the terminal device 600 are respectively for implementing the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and detailed descriptions are appropriately omitted here to avoid repetition.

When the terminal device 600 is used to execute the operation procedures involving the first terminal device in the above method embodiments, the processor 610 can be used to perform the actions described in the above method embodiments that are internally implemented by the first terminal device, such as determining the resources for sideways transmission. The transceiver 620 can be used to perform the actions sent by the first terminal device to the second terminal device or the actions received from the second terminal device described in the foregoing method embodiments. For details, please refer to the description in the foregoing method embodiments, and details are not repeated here.

When the terminal device 600 is used to execute the operation procedures involving the second terminal device in the above method embodiments, the processor 610 can be used to perform the actions internally implemented by the second terminal device described in the above method embodiments, such as receiving The received data is decoded. The transceiver 620 may be used to perform the action that the second terminal device receives from the first terminal device or the action that the second terminal device sends to the first terminal device described in the foregoing method embodiments. For details, please refer to the description in the foregoing method embodiments, and details are not repeated here.

The present application also provides a processing device, including at least one processor, and the at least one processor is used to execute the computer program stored in the memory, so that the processing device executes the method performed by the test equipment in the above method embodiment, the first A method executed by a terminal device or a method executed by a second terminal device.

The embodiment of the present application also provides a processing device, including a processor and an input/output interface. The input-output interface is coupled with the processor. The input and output interface is used for inputting and/or outputting information. The information includes at least one of instructions and data. The processor is configured to execute a computer program, so that the processing device executes the method executed by the first terminal device or the method executed by the second terminal device in the above method embodiments.

The embodiment of the present application also provides a processing device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the processing device executes the method performed by the first terminal device or the second terminal device in the above method embodiment method of execution.

It should be understood that the above processing device may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in the field. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the method provided in the embodiment of the present application, the present application also provides a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the program shown in Fig. 2, Fig. 6 or The method performed by the first terminal device in the embodiment shown in FIG. 7 , or causing the computer to perform the method performed by the second terminal device in the embodiment shown in FIG. 2 or FIG. 6 .

According to the methods provided in the embodiments of the present application, the present application also provides a computer-readable storage medium, the computer-readable storage medium stores program codes, and when the program codes are run on a computer, the computer executes the steps shown in Figure 2 and Figure 2. 6 or the method executed by the first terminal device in the embodiment shown in FIG. 7 , or causing the computer to execute the method executed by the second terminal device in the embodiment shown in FIG. 2 or FIG. 6 .

According to the method provided in the embodiment of the present application, the present application further provides a communication system, where the communication system may include the foregoing first terminal device and the second terminal device.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be components. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A wireless communication method, characterized in that the method comprises:

Determine the amount of resources occupied by the second-level control information according to the first code rate, the first code rate is preset or determined according to a preset first correspondence, and the first correspondence is a first parameter Corresponding relationship with code rate, the number of resources occupied is used to send the second-level control information;

Sending first information, where the first information includes control information and side data, where the side data includes at least one retransmitted coded block group CBG, and the control information includes the second-level control information.
The method according to claim 1, wherein the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is Determined based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship, where the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.
The method according to claim 2, characterized in that,

The code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship;

The code rate corresponding to the modulation order is the highest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; or,

The code rate corresponding to the modulation order is an average value of at least one code rate corresponding to the modulation order in the first MCS mapping relationship.
The method according to claim 1, wherein the first parameter includes a modulation order, and in the first correspondence, the code rate corresponding to the modulation order is a preset code rate.
The method according to claim 2 or 3, characterized in that the method further comprises:

Get the MCS index field;

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship;

Determine the first code rate according to the modulation order corresponding to the MCS index field and the first correspondence.
The method according to any one of claims 1 to 5, characterized in that the method further comprises:

Acquire MCS table indication information, where the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.
The method according to claim 1, wherein the first parameter comprises transmission priority, and the method further comprises:

Get the target transmission priority;

Determine the first code rate according to the target transmission priority and the first corresponding relationship.
The method according to claim 1, wherein the first parameter comprises a transmission priority and a modulation order, and the method further comprises:

Obtain the MCS index field and target transmission priority;

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

Determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.
The method according to any one of claims 1 to 8, wherein the first code rate is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network device for the sidelink The transport resource for the transfer.
The method according to any one of claims 1 to 9, wherein the first correspondence is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network device for the sidelink The transport resource for the transfer.
A wireless communication method, characterized in that the method comprises:

receiving first information, where the first information includes control information and sidelink data, where the sidelink data includes at least one retransmitted CBG, and the control information includes second-level control information;

Determine the resource occupation quantity of the second-level control information according to the first code rate, and the resource occupation quantity is used to receive the second-level control information;

Wherein, the first code rate is preset, or determined according to a preset first correspondence, and the first correspondence is a correspondence between a first parameter and a code rate.
The method according to claim 11, wherein the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is Determined based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship, where the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.
The method according to claim 12, characterized in that,

The code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship;

The code rate corresponding to the modulation order is the highest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; or,

The code rate corresponding to the modulation order is an average code rate of at least one code rate corresponding to the modulation order in the first MCS mapping relationship.
The method according to claim 11, wherein the first parameter includes a modulation order, and in the first correspondence, the code rate corresponding to the modulation order is a preset code rate.
The method according to claim 12 or 13, wherein the control information includes an MCS index field, and the method further includes:

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship;

Determine the first code rate according to the modulation order corresponding to the MCS index field and the first correspondence.
The method according to any one of claims 11 to 15, wherein the control information includes MCS table indication information, and the MCS table indication information is used to indicate at least one MCS mapping relationship with the first corresponding relationship The corresponding first MCS mapping relationship.
The method according to claim 11, wherein the first parameter includes a transmission priority, and the control information includes a target transmission priority, and the method further includes:

Determine the first code rate according to the target transmission priority and the first corresponding relationship.
The method according to claim 11, wherein the first parameter includes a transmission priority and a modulation order, and the control information includes an MCS index field and a target transmission priority, and the method further includes:

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

Determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.
The method according to any one of claims 11 to 18, wherein the first code rate is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network device for the sidelink The transport resource for the transfer.
The method according to any one of claims 11 to 19, wherein the first correspondence is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network device for the sidelink The transport resource for the transfer.
A communication device, characterized by comprising:

A processing unit, configured to determine the amount of resources occupied by the second-level control information according to a first code rate, the first code rate is preset or determined according to a preset first correspondence, the first correspondence The relationship is the corresponding relationship between the first parameter and the code rate, and the resource occupation quantity is used to send the second-level control information;

A transceiver unit, configured to send first information, where the first information includes control information and side data, where the side data includes at least one retransmitted CBG, and the control information includes the second-level control information.
The device according to claim 21, wherein the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is Determined based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship, where the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.
The device according to claim 22, characterized in that,

The code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship;

The code rate corresponding to the modulation order is the highest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; or,

The code rate corresponding to the modulation order is an average value of at least one code rate corresponding to the modulation order in the first MCS mapping relationship.
The device according to claim 21, wherein the first parameter includes a modulation order, and in the first correspondence, the code rate corresponding to the modulation order is a preset code rate.
The device according to claim 22 or 23, wherein the processing unit is further used for:

Get the MCS index field;

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship;

Determine the first code rate according to the modulation order corresponding to the MCS index field and the first correspondence.
The device according to any one of claims 21 to 25, wherein the processing unit is further configured to:

Acquire MCS table indication information, where the MCS table indication information is used to indicate a first MCS mapping relationship corresponding to the first correspondence among at least one MCS mapping relationship.
The device according to claim 21, wherein the first parameter includes a transmission priority, and the processing unit is further configured to:

Get the target transmission priority;

Determine the first code rate according to the target transmission priority and the first corresponding relationship.
The device according to claim 21, wherein the first parameter includes a transmission priority and a modulation order, and the processing unit is further configured to:

Obtain the MCS index field and target transmission priority;

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

Determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.
The device according to any one of claims 21 to 28, wherein the first code rate is preset in the configuration information of a resource pool, and the resource pool is preconfigured by the network equipment for the sidelink The transport resource for the transfer.
The device according to any one of claims 21 to 29, wherein the first correspondence is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network device for the sidelink The transport resource for the transfer.
A communication device, characterized by comprising:

A transceiver unit, configured to receive first information, where the first information includes control information and sidelink data, where the sidelink data includes at least one retransmitted CBG, and the control information includes second-level control information;

A processing unit, configured to determine the resource occupation quantity of the second-level control information according to the first code rate, and the resource occupation quantity is used to receive the second-level control information;

Wherein, the first code rate is preset, or determined according to a preset first correspondence, and the first correspondence is a correspondence between a first parameter and a code rate.
The device according to claim 31, wherein the first parameter includes a modulation order, one modulation order in the first correspondence corresponds to a code rate, and the code rate corresponding to the modulation order is Determined based on at least one code rate corresponding to the modulation order in the first MCS mapping relationship, where the first MCS mapping relationship corresponds to the first correspondence relationship in at least one preset MCS mapping relationship.
The device according to claim 32, characterized in that,

The code rate corresponding to the modulation order is the lowest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship;

The code rate corresponding to the modulation order is the highest code rate among at least one code rate corresponding to the modulation order in the first MCS mapping relationship; or,

The code rate corresponding to the modulation order is an average code rate of at least one code rate corresponding to the modulation order in the first MCS mapping relationship.
The device according to claim 31, wherein the first parameter includes a modulation order, and in the first correspondence, the code rate corresponding to the modulation order is a preset code rate.
The device according to claim 32 or 33, wherein the control information includes an MCS index field, and the processing unit is further configured to:

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship;

Determine the first code rate according to the modulation order corresponding to the MCS index field and the first correspondence.
The device according to any one of claims 31 to 35, wherein the control information includes MCS table indication information, and the MCS table indication information is used to indicate at least one MCS mapping relationship with the first correspondence The corresponding first MCS mapping relationship.
The device according to claim 31, wherein the first parameter includes a transmission priority, the control information includes a target transmission priority, and the processing unit is further configured to:

Determine the first code rate according to the target transmission priority and the first corresponding relationship.
The device according to claim 31, wherein the first parameter includes a transmission priority and a modulation order, the control information includes an MCS index field and a target transmission priority, and the processing unit is further configured to:

Determine the modulation order corresponding to the MCS index field in the first MCS mapping relationship corresponding to the first correspondence relationship;

Determine the first code rate according to the target transmission priority, the modulation order corresponding to the MCS index field, and the first correspondence.
The device according to any one of claims 31 to 38, wherein the first code rate is preset in the configuration information of a resource pool, and the resource pool is pre-configured by the network equipment for the sidelink The transport resource for the transfer.
The device according to any one of claims 31 to 39, wherein the first correspondence is preset in the configuration information of a resource pool, and the resource pool is preconfigured by the network device for the sidelink The transport resource for the transfer.
A terminal device, characterized in that it includes: a processor and a memory, the memory is used to store computer programs, the processor is used to call and run the computer programs stored in the memory, and execute any one of claims 1 to 10 one of the methods described.
A terminal device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 11 to 20 one of the methods described.
A chip, characterized by comprising: a processor, configured to call and execute computer instructions from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 10.
A chip, characterized by comprising: a processor, configured to call and execute computer instructions from a memory, so that a device equipped with the chip executes the method according to any one of claims 11 to 20.
A computer-readable storage medium, characterized by being used for storing computer program instructions, the computer program causing a computer to execute the method according to any one of claims 1 to 10.
A computer-readable storage medium, characterized by being used for storing computer program instructions, the computer program causing a computer to execute the method according to any one of claims 11 to 20.
A computer program product, characterized by comprising computer program instructions, the computer program instructions cause a computer to execute the method according to any one of claims 1 to 10.
A computer program product, characterized by comprising computer program instructions, the computer program instructions cause a computer to execute the method according to any one of claims 11 to 20.