WO2021134622A1

WO2021134622A1 - Wireless communication method and communication apparatus

Info

Publication number: WO2021134622A1
Application number: PCT/CN2019/130832
Authority: WO
Inventors: 丁梦颖; 廖树日; 马驰翔; 张鹏; 许华
Original assignee: 华为技术有限公司
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-08
Also published as: CN114731174A

Abstract

Provided in the present application are a wireless communication method and a communication apparatus, the method comprising: a second terminal apparatus acquires all of the transmission blocks of a first terminal apparatus in a communication cooperation group in which the second terminal apparatus is located; the second terminal apparatus sends all or a first portion of the transmission blocks to a network apparatus; when the second terminal apparatus sends all of the transmission blocks to the network apparatus, the first terminal apparatus or a third terminal apparatus sends all of the transmission blocks to the network apparatus; or, when the second terminal apparatus sends the first portion of the transmission blocks to the network apparatus, the first terminal apparatus or the third terminal apparatus sends a second portion of the transmission blocks to the network apparatus, the first portion and the second portion being different portions of the transmission blocks, and the third terminal apparatus being in the communication cooperation group. The terminal apparatuses in the communication cooperation group send the transmission blocks of the first terminal apparatus by means of cooperation, and the uplink transmission capability of the system can be improved.

Description

Wireless communication method and communication device

Technical field

This application relates to the field of wireless communication technology, and in particular to a wireless communication method and communication device.

Background technique

With the rapid development of wireless communication technology, a large number of new wireless service types have emerged, such as the Internet of Things, autonomous driving, etc., and various wireless communication services have placed higher requirements on the quality of wireless communication systems. Due to cost, radiation and other considerations, the current transmission power, transmit and receive antennas, and processing capabilities of user equipment are limited, resulting in limited uplink transmission capabilities in the current network. In order to meet the requirements of various wireless communication services, it is necessary to improve wireless The capacity of the communication system and the coverage of the network.

Summary of the invention

The present application provides a wireless communication method and communication device, which can enable terminal devices in a communication cooperation group to perform effective cooperative transmission and improve the uplink transmission capability of the system.

In a first aspect, a wireless communication method is provided, including: a second terminal device acquires all of the transmission blocks of a first terminal device in a communication cooperation group in which the second terminal device is located; the second terminal device sends a transmission to the network device The whole or the first part of the block; wherein, when the second terminal device sends all of the transmission block to the network device, the first terminal device or the third terminal device sends all of the transmission block to the network device; or, at the second terminal When the device sends the first part of the transmission block to the network device, the first terminal device or the third terminal device sends the second part of the transmission block to the network device, where the first part and the second part are different parts of the transmission block. Three terminal devices are in the communication cooperation group.

In the above technical solution, the second terminal device in the communication cooperation group assists the first terminal device to transmit the transmission block of the first terminal device, so that the first terminal device obtains the transmission power and antenna capability of the second terminal device, forming multiple users The virtual multiple-input multiple-output (MIMO) transmission improves the uplink transmission capability.

With reference to the first aspect, in a possible implementation of the first aspect, the first terminal device or the third terminal device sends all of the transmission block, and the redundant transmission block sent by the first terminal device or the third terminal device The redundancy version (RV) is the same as or different from the RV version of the transmission block sent by the second terminal device.

In the above technical solution, the two terminal devices in the communication cooperation group both send all the transmission blocks, so that the gain of the combined transmission power can be obtained at the receiving end, and the uplink transmission capability is improved. When the RV versions of the transmission blocks sent by the two terminal devices are different, the receiving end decodes the transmission blocks of different RV versions and then combines them, which improves the reliability of decoding.

Optionally, the first terminal device or the third terminal device sends all of the transport block, and the precoding of the transport block sent by the first terminal device or the second terminal device and the precoding of the transport block sent by the second terminal device Same or different.

Optionally, the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is not greater than the minimum supported by the second terminal device and the third terminal device. The number of antenna ports, the number of layers corresponding to the same precoding matrix is not greater than the minimum number of layers supported by the second terminal device and the third terminal device, and the type of the same precoding matrix is the second terminal device and the third terminal The intersection of the precoding matrix types supported by the device.

Optionally, the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to different precoding matrices is not greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, The number of layers corresponding to different precoding matrices is the same and is not greater than the minimum number of layers supported by the second terminal device and the third terminal device.

When the precoding of the transport blocks sent by the two terminal devices is different, the transmission capacity of each terminal device can be utilized to the maximum, which improves the uplink transmission capacity.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first part and the second part are different sub-transmission blocks of the transmission block, and the sub-transmission block is a plurality of consecutive bits in the transmission block; or, the first part And the second part is a different part of the bit stream after adding a cyclic redundancy code (CRC) to the transmission block; or, the first part and the second part are different code blocks of multiple code blocks corresponding to the transmission block; or , The first part and the second part are different symbols of the multiple symbols modulated by the transmission block.

In the above technical solution, two terminal devices send different parts of the transmission block, which improves the data multiplexing gain of the receiving end and improves the uplink transmission capability.

In a second aspect, a wireless communication method is provided, including: a network device receives all of the transmission block sent by the second terminal device; the network device receives the transmission block sent by the first terminal device or the third terminal device All, where the first terminal device, the second terminal device, and the third terminal device belong to the same communication cooperation group.

In the above technical solution, the second terminal device in the communication cooperation group assists the first terminal device to transmit the transmission block of the first terminal device, so that the first terminal device obtains the transmission power and antenna capability of the second terminal device, forming multiple users The virtual MIMO transmission improves the uplink transmission capacity.

With reference to the second aspect, in a possible implementation of the second aspect, the first terminal device or the third terminal device sends all of the transmission block, and the RV of the transmission block sent by the first terminal device or the third terminal device The version is the same as or different from the RV version of the transport block sent by the second terminal device.

Optionally, the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is not greater than the minimum antenna port supported by the second terminal device and the third terminal device The number of layers corresponding to the same precoding matrix is not greater than the minimum number of layers supported by the second terminal device and the third terminal device, and the type of the same precoding matrix is supported by the second terminal device and the third terminal device. The intersection of the precoding matrix types.

Optionally, the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to different precoding matrices is not greater than the minimum antenna port supported by the second terminal device and the third terminal device The number of layers corresponding to different precoding matrices is the same and is not greater than the minimum number of layers supported by the second terminal device and the third terminal device.

In a third aspect, a wireless communication method is provided, including: a network device receives a first part of a transmission block of a first terminal device sent by a second terminal device; the network device receives a transmission block sent by the first terminal device or a third terminal device The second part of the first terminal device, the second terminal device, and the third terminal device belong to the communication cooperation group, and the first part and the second part are different parts of the transmission block.

With reference to the third aspect, in a possible implementation manner of the third aspect, the first part and the second part are different sub-transport blocks of a transmission block, and the sub-transport blocks are multiple consecutive bits in the transmission block; or, The first part and the second part are different parts of the bit stream after the CRC is added to the transport block; or, the first part and the second part are different code blocks of the multiple code blocks corresponding to the transport block; or, the first part and the second part are Different symbols of multiple symbols after transmission block modulation.

In a fourth aspect, a wireless communication device is provided. The wireless communication device belongs to a second terminal device in a communication cooperation group. The wireless communication device includes: an acquisition module for acquiring transmissions of a first terminal device in the communication cooperation group. The entire block; the sending module is used to send all or the first part of the transmission block to the network device; wherein, when the second terminal device sends all of the transmission block to the network device, the first terminal device or the third terminal device sends the entire transmission block to the network device Send all of the transmission block; or, when the second terminal device sends the first part of the transmission block to the network device, the first terminal device or the third terminal device sends the second part of the transmission block to the network device, wherein the first part and the second part The parts are different parts of the transmission block, and the third terminal device is in the communication cooperation group.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first terminal device or the third terminal device sends all of the transmission block, and the RV of the transmission block sent by the first terminal device or the third terminal device The version is the same as or different from the RV version of the transport block sent by the second terminal device.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the first part and the second part are different sub-transmission blocks of the transmission block, and the sub-transmission block is a plurality of consecutive bits in the transmission block; or, the first part And the second part are different parts of the bit stream with the CRC appended to the transport block; or, the first part and the second part are different code blocks of the multiple code blocks corresponding to the transport block; or, the first part and the second part are the transport blocks Different symbols of multiple symbols after modulation.

In a fifth aspect, a wireless communication device is provided. The device includes: a receiving module for receiving all the transmission blocks of the first terminal device sent by the second terminal device; the receiving module is also used for receiving the first terminal device or All of the transmission blocks sent by the third terminal device, where the first terminal device, the second terminal device, and the third terminal device belong to the same communication cooperation group.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the first terminal device or the third terminal device sends all of the transmission block, and the RV of the transmission block sent by the first terminal device or the third terminal device The version is the same as or different from the RV version of the transport block sent by the second terminal device.

In a sixth aspect, a wireless communication device is provided. The device includes: a receiving module for receiving a first part of a transmission block of a first terminal device sent by a second terminal device; the receiving module is also used for receiving a first terminal device Or the second part of the transmission block sent by the third terminal device, where the first terminal device, the second terminal device, and the third terminal device belong to a communication cooperation group, and the first part and the second part are different parts of the transmission block.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the first part and the second part are different sub-transmission blocks of a transmission block, and the sub-transmission blocks are multiple consecutive bits in the transmission block; or, The first part and the second part are different parts of the bit stream after the CRC is added to the transport block; or, the first part and the second part are different code blocks of the multiple code blocks corresponding to the transport block; or, the first part and the second part are Different symbols of multiple symbols after transmission block modulation.

In a seventh aspect, a computer program product is provided. When the computer program product runs on a wireless communication device, the wireless communication device executes the method in any one of the possible implementations of the first aspect.

In an eighth aspect, a computer program product is provided. When the computer program product runs on a wireless communication device, the wireless communication device executes the method in any one of the possible implementations of the second aspect.

In a ninth aspect, a computer program product is provided. When the computer program product runs on a wireless communication device, the wireless communication device executes the method in any one of the possible implementations of the third aspect.

In a tenth aspect, a computer-readable storage medium is provided, and the storage medium stores a computer program or instruction. When the computer program or instruction is executed, the computer executes the method in any one of the possible implementations of the first aspect. .

In an eleventh aspect, a computer-readable storage medium is provided, and the storage medium stores a computer program or instruction. When the computer program or instruction is executed, the computer executes any one of the possible implementations of the second aspect. method.

In a twelfth aspect, a computer-readable storage medium is provided, and the storage medium stores a computer program or instruction. When the computer program or instruction is executed, the computer executes any one of the possible implementations of the third aspect. method.

In a thirteenth aspect, a chip system is provided, including a processor, configured to execute the method in any one of the possible implementation manners of the first aspect. Wherein, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

In a fourteenth aspect, a chip system is provided, including a processor, configured to execute the method in any one of the possible implementation manners of the second aspect. Wherein, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

In a fifteenth aspect, a chip system is provided, including a processor, configured to execute the method in any one of the possible implementation manners of the third aspect. Wherein, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

In a sixteenth aspect, a communication system is provided, including: a communication device for executing the method in any one of the possible implementations of the first aspect above, and/or for executing any one of the above second aspects A communication device for the method in a possible implementation manner, and/or a communication device for executing the method in any one of the possible implementation manners of the third aspect.

Description of the drawings

Figure 1 is a schematic diagram of an uplink user cooperative communication scenario of the present application;

FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of another wireless communication method according to an embodiment of the present application;

4 is a schematic diagram of data transmission and signaling interaction of the wireless communication method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a physical uplink shared channel PUSCH generation process according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another PUSCH generation process according to an embodiment of the present application;

Figure 7 is a schematic diagram of a channel coding and rate matching method;

FIG. 8 is a schematic diagram of precoding matrices of different codebook types according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a process of generating a demodulation reference signal DMRS according to an embodiment of the present application;

FIG. 10 is a schematic diagram of another PUSCH generation process according to an embodiment of the present application;

FIG. 11 is a schematic diagram of another PUSCH generation process according to an embodiment of the present application;

FIG. 12 is a schematic diagram of another PUSCH generation process according to an embodiment of the present application;

FIG. 13 is a schematic diagram of another PUSCH generation process according to an embodiment of the present application;

FIG. 14 is a schematic diagram of a wireless communication device according to an embodiment of the present application;

15 is a schematic diagram of another wireless communication device according to an embodiment of the present application;

FIG. 16 is a schematic diagram of another wireless communication device according to an embodiment of the present application;

FIG. 17 is a schematic diagram of another wireless communication device according to an embodiment of the present application;

FIG. 18 is a schematic diagram of another wireless communication device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. It can be understood that the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) The system or new radio (NR), or future evolution network, Internet of Vehicles, D2D (device to device) network, etc., can improve the uplink transmission capacity of the communication system.

For example, the embodiments of the present application can be applied to a 5G system. Due to the limited transmission power, transmitting and receiving antennas, and processing capabilities of the current user equipment, the current uplink transmission capability in the network is limited. In order to improve the uplink transmission capability of the network, the user cooperative communication mode of the embodiment of the present application may be adopted. As one of the main features supported by the 5G system, user collaborative communication can significantly increase the capacity of the system and the coverage of the network. The main idea of user cooperation is to use idle users in the network to help transmitting users perform transmission, so that the transmitting users can obtain the transmission power and antenna capabilities of idle users, and the antennas of multiple users can form virtual MIMO for transmission.

To facilitate the understanding of the embodiments of the present application, first, with reference to FIG. 1, a detailed description of the uplink user cooperative communication system applicable to the method provided in the embodiments of the present application is described. Fig. 1 is a schematic diagram of a possible application scenario of an embodiment of the present application. As shown in Figure 1, the application scenario may include multiple terminal devices and network devices. As shown in Figure 1(a), the first terminal device 110, the second terminal device 120, and the third terminal device 130 form a user cooperation group. In the first stage of transmission, the first terminal device 110 passes through the side link The first data is sent to the second terminal device 120 and the third terminal device 130, respectively. In the second stage of transmission, the second terminal device 120 and the third terminal device 130 forward all or part of the received first data to the network device 140. There are many ways to forward, such as amplification forwarding, decoding forwarding, and compression. Forward etc. As shown in Figure 1(c), in the second stage of transmission, the second terminal device 120 and the third terminal device 130 may also forward data from the first terminal device 110 to other terminal devices, for example, to the first terminal device. Target terminal device 150. In the second stage of the transmission, in addition to the second terminal device 120 and the third terminal device 130 forwarding all or part of the received first data, as shown in FIG. 1(b), the first terminal device 110 may also All or part of the first data is sent to the network device 140. As shown in Figure 1(d), in the second stage of transmission, except for the second terminal device 120 and the third terminal device 130, all or part of the received first data is forwarded to other terminal devices, such as the first target terminal. The device 150, the first terminal device 110 may also send all or part of the first data to the first target terminal device 150.

It should be understood that in the application scenario shown in FIG. 1(b) or FIG. 1(d), the communication cooperation group may only have the first terminal device 110 and the second terminal device 120. In the first stage of transmission, the first terminal device 110 sends the first data to the second terminal device 120 through the side link. In the second stage of transmission, the first terminal device 110 and the second terminal device 120 send the first data to the network device 140. Or the first target terminal device 150 transmits all or part of the first data.

The first terminal device 110 may be called a source terminal device or a source user equipment (SUE), and the second terminal device 120 and the third terminal device 130 may be called a cooperative terminal device or a cooperation user equipment (CUE), The first target terminal device 150 may be called a target user equipment (target user equipment, TUE). The embodiment of the application described in FIG. 1 only gives one source terminal device, two cooperative terminal devices, and one target terminal device as examples. It should be understood that in an actual scenario, there may be multiple server terminal devices and multiple cooperative terminal devices. A terminal device and multiple target terminal devices. Through the two-stage transmission, the first terminal device 110 sends data to the network device 140 or the first target terminal device 150 under the cooperation of the second terminal device 120 and the third terminal device 130 to complete the cooperation between the respective terminal devices. Transmission or relay transmission process. The embodiments of the present application are not only applicable to UE cooperation, but also applicable to user equipment relay (UE relay).

In order to facilitate the understanding of those skilled in the art, some terms in the embodiments of the present application will be explained below.

1) Terminal device. The first terminal device, the second terminal device, the third terminal device and the first target terminal device involved in this application may include various devices with wireless communication functions or the units, components, Module, device, chip or SOC. The device with wireless communication function may be, for example, a vehicle-mounted device, a wearable device, a computing device or other devices connected to a wireless modem, a mobile station (MS), and a terminal (terminal) Or user equipment (UE), etc. When the first to third terminal devices and the first target terminal device are in-vehicle devices, they can be placed or installed in the vehicle. The in-vehicle device can be regarded as a part of the vehicle, or it can be regarded as a module or a module installed in the vehicle. The device may also be called an on-board unit (OBU).

The first to third terminal devices and the first target terminal device involved in the embodiments of the present application may also include devices that provide users with voice and/or data connectivity. Specifically, they include devices that provide users with voice, or include devices that provide users with voice and/or data connectivity. A device that provides data connectivity to users, or includes devices that provide voice and data connectivity to users. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN. The terminal device may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine /machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit, subscriber station (subscriber) station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, the first to third terminal devices and the first target terminal device involved in the embodiments of the present application may also be wearable devices. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The terminal device may be a terminal device, or a module for realizing the functions of the terminal device. The module may be set in the terminal device or may be set independently of the terminal device. The module may be, for example, a chip, a chip system, or System on chip, etc.

The source terminal device refers to a terminal device that has uplink data transmission or side data transmission requirements, and the source terminal device needs a cooperative terminal device to cooperate to complete the transmission. The source terminal device sends the data that needs to be transmitted to other terminal devices in the user group, such as a cooperative terminal device, and the cooperative terminal device completes the data forwarding.

A cooperative terminal device refers to a terminal device that assists other terminal devices in transmitting data. The cooperative terminal device receives data from a source terminal device and forwards the data to a destination designated by the source terminal device, such as a target terminal device or a base station.

The target terminal device refers to the terminal device to which the source terminal device finally transmits data or information through the cooperation terminal device during the user collaboration process, and refers to the destination to which the source terminal device intends to send the data.

2) Network devices, for example, including access network (AN) equipment, such as network devices (for example, access points), which may refer to wireless terminal devices that communicate with wireless terminal equipment through one or more cells over the air interface in the access network The device, or, for example, a network device in a vehicle-to-everything (V2X) technology is a roadside unit (RSU). The network device can be used to convert the received air frame and Internet protocol (Internet protocol, IP) packets to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network can include IP The internet. The RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network device may include an evolved network device (NodeB or eNB or e-NodeB, evolutional NodeB) in a long term evolution (LTE) system or an advanced long term evolution (LTE-A). , Or it may also include the next generation node B (gNB) in the new radio (NR) system (also referred to as the NR system) of the fifth generation mobile communication technology (the 5th generation, 5G) or It may include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (cloud radio access network, Cloud RAN) system, which is not limited in the embodiment of the present application.

3) Sidelink refers to the link between the terminal device and the terminal device. The uplink refers to the link through which the terminal device transmits information to the network device, and the downlink refers to the link through which the terminal device receives information from the network device.

It should be understood that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

It should be understood that, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, and priority of multiple objects. Or degree of importance. For example, the first terminal device and the second terminal device are only for distinguishing different terminal devices, and do not necessarily indicate the difference in priority or importance of the two terminal devices.

Fig. 2 is a flowchart of an embodiment of a trustless communication method according to an embodiment of the present application. Fig. 3 is a flowchart of another embodiment of an untrusted communication method according to an embodiment of the present application.

As shown in FIG. 2, the wireless communication method involves a first terminal device, a second terminal device, and a network device.

S201: The second terminal device acquires a transmission block of the first terminal device. In this embodiment of the application, the first terminal device may send the transmission block to the second terminal device in the communication cooperation group through the side link. For example, the first terminal device may use multicast or multicast to send the transmission block to the second terminal device. Send the first side row data. The second terminal device receives the original bit TB1 obtained after successfully decoding the first side line data sent by the first terminal device.

S202: The second terminal device sends all or the first part of the transmission block to the network device. In the embodiment of the present application, when the second terminal device sends all of the transmission block to the network device, the first terminal device may send all of the transmission block; or, when the second terminal device sends the first part of the transmission block, the first terminal device The device may send a second part of the transmission block, where the first part and the second part are different parts of the transmission block.

As shown in FIG. 3, the wireless communication method involves a first terminal device, a second terminal device, a third terminal device, and a network device.

S201a: The second terminal device and the third terminal device acquire a transmission block of the first terminal device. In the embodiment of the present application, the first terminal device may send the transmission block to the second terminal device and the third terminal device in the communication cooperation group through the side link. For example, the first terminal device may adopt multicast or multicast mode The first side line data is transmitted to the second terminal device and the third terminal device. The second terminal device and the third terminal device receive the original bit TB1 obtained after successfully decoding the first side line data sent by the first terminal device.

S202a: The second terminal device sends all or the first part of the transmission block to the network device. In the embodiment of the present application, when the second terminal device sends all of the transmission block to the network device, the third terminal device may send all of the transmission block; or, when the second terminal device sends the first part of the transmission block, the third terminal device The device may send a second part of the transmission block, where the first part and the second part are different parts of the transmission block.

The following uses the application scenario shown in (a) of FIG. 1 as an example to describe in detail the wireless communication method of the embodiment of the present application.

Fig. 4 is a data transmission and signaling interaction flow of the wireless communication method according to an embodiment of the present application. As shown in Figure 1 (a) and Figure 4, the data transmission process involves a first terminal device, a second terminal device, a third terminal device, and a network device. The data transmission process includes step S300 to step S306.

S300 includes steps S300A to S300C.

S300A. The first terminal device sends a scheduling request to the network device. When the first terminal device has an uplink data transmission request, the first terminal device sends a scheduling request (SR) to the network device. The scheduling request is used to notify the network device that the first terminal device has a data transmission request, and the network device is required to further Configure transmission resources. The scheduling request is also used to trigger the network device to send downlink control information to the first terminal device.

S300B. The network device sends first downlink control information to the first terminal device. After receiving the scheduling request, the network device sends first downlink control information to the first terminal device. The first downlink control information carries uplink scheduling information. The uplink scheduling information is used to instruct the first terminal device to send a buffer status report to the network device. After receiving the uplink scheduling information, the first terminal device knows on which resource the buffer status report is sent.

S300C: The first terminal device sends a buffer status report to the network device. The first terminal device sends a buffer status report (BSR) to the network device according to the uplink scheduling information, and the network device receives the buffer status report from the first terminal device. The buffer status report may be used to indicate the total amount of data that the first terminal device needs to send to the network device. The network device determines the second downlink control information according to at least one of the following information: the scheduling request from the first terminal device, the buffer status report from the first terminal device, the channel conditions of the first terminal device and the second terminal device, the first A channel condition of a terminal device and a third terminal device, a channel condition of a first terminal device and a network device, a channel condition of a second terminal device and a network device, and a channel condition of a third terminal device and the network device.

For example, the first terminal device has 1000 bits of data to be transmitted to the network device, the first terminal device sends a scheduling request to the network device, and receives the downlink control information sent by the network device, and the first terminal device is based on the uplink scheduling in the downlink control information. The information sends a buffer status report BSR to the network device, and the network device knows the 1000-bit data upload requirement of the first terminal device after receiving the buffer status report of the first terminal device. The network device searches for idle terminal devices near the area where the first terminal device is located, and measures the channel conditions between each idle terminal device and the first terminal device and the channel conditions between each idle terminal device and the network device, and determines the second terminal device and the first terminal device. The three terminal devices can be used as cooperative terminal devices of the first terminal device, the channel conditions between the second terminal device or the third terminal device and the first terminal device are good, and the channel conditions between the second terminal device or the third terminal device and the network device are good, Have the basis for data transmission. The second terminal device and the third terminal device may be the cooperative terminal devices selected by the network device in the determined cooperation group, that is, this cooperative group already contains several terminal devices, and when the first terminal device has a data transmission demand, the network The device determines from the number of terminal devices which terminal devices (for example, the second terminal device and the third terminal device) can assist the first terminal device in transmitting information to the network device. Alternatively, the second terminal device and the third terminal device may not be in a cooperative group with the first terminal device, and when the first terminal device has a data transmission requirement, the network device dynamically determines which terminals are used, for example, by measurement. The devices (for example, the second terminal device and the third terminal device) can assist the first terminal device to transmit information to the network device. At this time, the network device will determine that the first to third terminal devices belong to the same cooperative group. The collaboration group can also be called an assistance group. The network device determines the data size of the first side line data according to the buffer status report, each channel condition, and the capabilities of each terminal device, for example, 100 bits, that is, the second terminal device and the third terminal device can forward together for the first terminal device 100 bits of information to the network device.

In the embodiment of the present application, step S300 is an optional step. In other embodiments, part or all of the steps of S400 may exist. For example, before step S301, there may be steps S400A and S400B.

S301: The network device determines second downlink control information. The second downlink control information is used to instruct the first terminal device to send the first side row control information and the first side row resource of the first side row data to the second terminal device and the third terminal device.

S302: The network device sends second downlink control information to the first terminal device, and the first terminal device receives the second downlink control information from the network device. The second downlink control information is used to instruct the first terminal device to send the first side row resource of the first side row information to the second terminal device and the third terminal device. The first side row information includes the first side row control information and the first side row resource. Side row data.

In addition to the first sideline resource, the second downlink control information may also contain or be used to indicate at least one of the following information: the index ID of the target terminal group for sideline transmission, the sideline transmission modulation of the first sideline data, and The coding scheme (modulation and coding scheme, MCS), the data volume of the first side row data, the new data indication information of the first side row data, the hybrid automatic repeat request of the first side row data, HARQ) process number, side row transmission power control information of the first side row data, and precoding matrix of the first side row data.

Wherein, the target user group index for side-link transmission is pre-configured by high-level signaling or protocol, and is used by the first terminal device to determine the index ID of the target terminal group for side-line communication, for example, when the target terminal group in the downlink control information The index ID of is 3, which means that this downlink control information is used to configure the communication process with the second terminal and the third terminal device. In addition to the second terminal device and the third terminal device, the index ID may also indicate that this downlink control information is used to configure the communication process with the fourth, fifth, and sixth terminal devices.

Sideline resources include at least sideline control information transmission resources and sideline data transmission resources, such as a physical sidelink control channel (PSCCH) used to transmit sideline control information and a physical side used to transmit sideline data A sidelink shared channel (physical sidelink shared channel, PSSCH), a sidelink resource is used for the first terminal device to communicate with a cooperative terminal device, such as a second terminal device and/or the third terminal device, on a designated resource.

S303: The first terminal device sends the first side line information to the second terminal device and the third terminal device. The first side row information includes first side row control information and first side row data, the second terminal device receives the first side row control information and the first side row data from the first terminal device, and the third terminal device receives the first side row control information and the first side row data from the first terminal device. First side row control information and first side row data of a terminal device; the first side row control information is used to indicate a first transmission resource for transmitting the first side row data, and the first side row resource includes the first transmission resource. The original bit obtained after the second terminal device or the third terminal device successfully decodes the first side row data is called transport block 1 (TB1).

S304: The second terminal device and the third terminal device send response information to the network device. The second terminal device sends first response information to the network device, the network device receives the first response information from the second terminal device, and the first response information is used to indicate whether the second terminal device successfully receives the first side line data ; The third terminal device sends second response information to the network device, the network device receives the second response information from the third terminal device, and the second response information is used to indicate whether the third terminal device successfully receives the second side line data.

Optionally, the first response message generated and sent to the network device by the second terminal device after successfully receiving and successfully decoding the first side line data from the first terminal device is an acknowledgement character (ACK), using In order to inform the second terminal device that the first side line data has been successfully received, the third terminal device may also send an ACK to the network device after successfully receiving and decoding the second side line data.

S305: The network device sends downlink control information to the second terminal device and the third terminal device. The network device sends third downlink control information to the second terminal device, and the network device sends fourth downlink control information to the third terminal device. The third downlink control information is used to indicate the first uplink resource, and the fourth downlink control information is used to indicate the second uplink resource. The first uplink resource is used for the second terminal device to communicate with the network device on the designated resource. The second uplink resource is used for the third terminal device to communicate with the network device on the designated resource.

The first uplink data is determined based on the first side row data, and the second uplink data is determined based on the first side row data.

In addition to the first uplink resource, the third downlink control information may also include or be used to indicate at least one of the following information: the uplink transmission MCS of the first uplink data, the data volume of the first uplink data, and the redundancy of the first uplink data Version (redundancy version, RV), precoding matrix of the first uplink data, initialization information of the scrambling sequence, whether to perform conversion precoding, time-frequency resources, rate matching resources, and whether to perform frequency-domain frequency hopping configuration.

In addition to the second uplink resource, the fourth downlink control information may also include or be used to indicate at least one of the following information: the uplink transmission MCS of the second uplink data, the data amount of the second uplink data, and the second uplink data The RV version of the second uplink data, the precoding matrix of the second uplink data, the initialization information of the scrambling sequence, whether to perform conversion precoding, time-frequency resources, rate matching resources, and whether to perform frequency-domain frequency hopping configuration.

After receiving the ACKs from the second terminal device and the third terminal device, the network device configures the uplink data transmission resource for the second terminal device, that is, the first uplink resource, configures the second uplink resource for the third terminal device, and configures the uplink resource The information is sent to the second terminal device via the third downlink control information, and sent to the third terminal device via the fourth downlink control information. After receiving the third downlink control information, the second terminal device determines the first uplink resource. The second terminal device decodes and encodes and modulates the first side row data to generate the first uplink data. Similarly, the third terminal device generates the first uplink data according to the The two-side line data generates second uplink data, and the second uplink resource is determined according to the fourth downlink control information.

S306: The second terminal device sends the first uplink data, and the third terminal device sends the second uplink data. The second terminal device sends the first uplink data to the network device on the first uplink resource according to the third downlink control information, and the third terminal device sends the second uplink data to the network device on the second uplink resource according to the fourth downlink control information. As shown in FIG. 4, the second terminal device processes TB1 to generate first uplink data to be transmitted on a physical uplink shared channel (PUSCH). The third terminal device processes TB1 to generate second uplink data for transmission on the PUSCH.

In the embodiment of the present application, after receiving the data of the first terminal device, the second terminal device and the third terminal device send the received data of the first device to the network device under the instruction of the network device, realizing cooperation Transmission improves the uplink transmission capacity of the system.

The above is the data transmission and signaling interaction flow of the wireless communication method of the embodiment of the present application. The second terminal device and the third terminal device of the embodiment of the present application are described in detail below with reference to FIGS. 5 to 13 to assist the first terminal device to send uplink data. When generating PUSCH.

As an embodiment, when the second terminal device assists the first terminal device in sending the transmission block, both the second terminal device and the third terminal device send all of TB1. As shown in FIG. 5 and FIG. 6, the second terminal device or the third terminal device maps all the TB1 obtained from the first terminal device to the PUSCH through step S401 to step S411 and sends it to the receiving end.

The process of generating the PUSCH from the TB1 by the second terminal device will be described in detail below with reference to FIG. 5 and FIG. 6. As shown in Figure 5 and Figure 6, the PUSCH generation process mainly includes: channel coding scheme, scrambling, modulation, layer mapping, conversion precoding, precoding, resource mapping, and orthogonal frequency division multiplexing (orthogonal frequency division multiplexing). , OFDM) symbol several steps. Among them, converting precoding is an optional step. When transforming precoding is used, a discrete Fourier transform-spreading orthogonal frequency division multiplexing (discrete Fourier transform-spreading-orthogonal frequency domain multiplexing, DFT-S-OFDM) waveform is finally generated; when transforming precoding is not used, finally Generate OFDM waveform.

Specifically, the channel coding scheme also includes generating TB cyclic redundancy code (CRC), code block (code block, CB) segmentation, generating CB CRC, channel coding, rate matching, code block concatenation, and so on.

S401: Generate TB CRC. Illustratively, denote all the bits contained in TB1 as a ₀ , a ₁ , a ₂ ,..., a _A-1 , and generating TB CRC means generating cyclic redundancy codes b ₀ , b ₁ , b ₂ ,... ,b _B-1 , and add these bits to TB1 as a ₀ ,a ₁ ,a ₂ ,...,a _A-1 b ₀ ,b ₁ ,b ₂ ,...,b _B-1 . When the receiver decodes TB1, it can be checked by CRC.

S402, code block division. When the TB1 with CRC attached (that is, a ₀ , a ₁ , a ₂ ,..., a _A-1 b ₀ , b ₁ , b ₂ ,..., b _B-1 ) contains a relatively large number of bits, the channel coded The complexity is high, so it is necessary to divide the TB1 with CRC into multiple CBs. Assuming that the maximum number of bits that a CB can contain is L, when the CRC-added TB1 contains more bits than L, the CRC-added TB1 needs to be divided into multiple CBs, and the number of bits contained in each CB is L. If the number of bits contained in the TB1 with CRC is not an integral multiple of L, the number of bits contained in the last CB may be less than L. Therefore, it can be divided into N=[(A+B)/L] CBs in total; otherwise, the TB with CRC only contains one CB, that is, N=1, and the number of bits contained in this CB is the number of bits contained in the TB1 with CRC. The number of bits. Among them, the nth CB is recorded as

Exemplarily, as shown in FIG. 5 and FIG. 6, the CRC-added TB1 is divided into 4 CBs: CB0, CB1, CB2, and CB3.

S403: Generate CB CRC. To generate CB CRC is to generate a cyclic redundancy code for a CB

And append these bits to CB as

When the terminal decodes this CB, CRC can be used for verification.

S404, channel coding, rate matching. Specifically, channel coding and rate matching are required for each CB attached with CRC. Figure 7 is a schematic diagram of a signal coding and rate matching method.

Channel coding for each CB with CRC, then

Generated after channel coding

The coded bits include original information bits and check bits before coding. Channel coding usually uses a fixed code rate, as shown in Figure 7. For example, the code rate of using low-density parity-check (LDPC) is 1/3. If the number of original information bits before encoding is x, the number of encoded information bits is 3x, which contains x original information bits and 2x parity bits.

According to the specific channel conditions of the terminal device, the network device will configure the corresponding MCS for the user, that is, the transmission code rate of the terminal device may be different from the fixed code rate of the channel coding. Therefore, we need to start from the coded bit

Take out the bit corresponding to the transmission code rate, which is called rate matching, and record the bit after rate matching as

Place the coded bits in the ring buffer in sequence. For a specific code rate, read the coded bits in order from a certain starting position in the ring buffer. If the end of the coded bit has not been read, it will be read. Then continue to read from the head of the coded bits, and the number of read bits meets the specific code rate. The RV version represents the starting position of the read bit in the ring buffer.

Optionally, in the case that both the second terminal device and the third terminal device send all of TB1, the network device may configure the second terminal device and the third terminal device with the same RV version. Exemplarily, as shown in FIG. 7, the encoded bits have 4 RV versions: RV0, RV1, RV2 and RV3. The network device may configure the same RV version for the second terminal device and the third terminal device. For example, the RV version configured for the second terminal device and the third terminal device are both RV1.

S405, the code blocks are cascaded. Specifically, the rate-matched bits corresponding to each CB are cascaded together in the order of CBs:

And denote them as h ₀ , h ₁ , h ₂ ,...h _H-1 .

S406, scrambling. In order to prevent interference between terminal devices in different cells, it is necessary to scramble the coded bits of each terminal device to randomize the interference. Generate a random sequence k ₀ , k ₁ , k ₂ ,..., k _K-1 , and perform modulo 2 operation on each bit in this random sequence and each bit after encoding, that is, _mi = (h _i + k _i ) mod 2, record the scrambled bits as m ₀ , m ₁ , m ₂ ,..., m _H-1 . Exemplarily, the generated random sequence may be a Gold sequence, and its initialization parameter is c _init =n _RNTI ·2 ¹⁵ +n _ID , where n _RNTI is a user identifier, and n _ID can be configured by a higher layer.

S407, modulation. Modulation is to map bits into complex symbols according to certain rules. The available modulation methods are QPSK, 16QAM, 64QAM, 256QAM, etc. It can be recorded that the bit streams m ₀ , m ₁ , m ₂ ,..., m _{H-1 are} modulated to generate complex symbol streams p ₀ , p ₁ , p ₂ ,..., p _P-1 .

S408, layer mapping. Layer mapping is to map the modulated complex symbols corresponding to a TB to different layers, and the physical signals generated by the complex signals corresponding to different layers can be transmitted through different antenna ports for space division multiplexing. For example, the modulation complex symbols p ₀ , p ₁ , p ₂ ,..., p _{P-1 are} mapped to L layers, and the number of modulation symbols mapped in each layer is

The modulation complex symbols mapped on the l∈{0,1,2,...,L-1} layer are

S409, precoding. Specifically, the complex symbols transmitted on each antenna port can be determined through precoding.

Optionally, before performing precoding, when the number of layers of the layer mapping is 1, conversion precoding may also be performed. Transformation precoding is to perform discrete Fourier transform (DFT) on the complex symbols after layer mapping, and record the complex symbols after conversion precoding corresponding to the first layer as

If the complex symbol corresponding to each layer is not converted and pre-coded, it is also recorded as

among them

Subsequently, a precoding operation is performed to determine the complex symbols transmitted on each antenna port. For example, the number of antenna ports that can be used is V, and the complex symbol transmitted on the v-th antenna port is

and

The precoding process is as follows:

among them,

W is the precoding matrix, and its matrix dimension is V×L.

Exemplarily, two precoding methods, non-codebook-based transmission and codebook-based transmission, can be used.

For non-codebook-based transmission, W is the identity matrix, so the number of antenna ports and the number of layers are the same, and each antenna port transmits a complex symbol corresponding to a layer.

For codebook-based transmission, W is not the identity matrix, and the data sent on one antenna port may be a combination of data corresponding to different layers. According to different capabilities reported by the terminal device, the codebook types that can be used by the terminal device are divided into three categories: full coherence, partial coherence, and no coherence. Correlation means that the terminal can better control the phase relationship between different antennas. If the data sent on an antenna port is a combination of data corresponding to different layers, it is necessary to ensure that the different antennas are correlated. The capabilities of the terminal device may be different. For example, the maximum number of antenna ports that can be supported is different, the maximum rank or the maximum number of layers supported is different, and the precoding codebook set supported is different.

For example, three types of codebook sets are supported in NR: fullAndPartialAndNonCoherent, partialAndNonCoherent, and nonCoherent, and the three types of codebooks have the following inclusion relationship: the set of irrelevant codebooks is included in the set of partially related codebooks and the set of fully correlated codebooks , which is

Fig. 8 is a schematic diagram of precoding matrices of three types of codebooks and antenna selection methods of corresponding codebooks. Exemplarily, the terminal device has 4 antennas: antenna 1, antenna 2, antenna 3, and antenna 4. The number of layers for layer mapping is one layer. As shown in FIG. 8, the dimension of the precoding matrix is 4×1.

When the codebook type corresponding to the precoding matrix is uncorrelated, as shown in (a) in FIG. 8, the complex symbols mapped to each layer can only select one antenna for transmission, for example, antenna 2 is selected. For the uncorrelated codebook set, for the complex symbols of each layer, one of the 4 antennas can be selected for transmission, so there are 4 different precoding matrices. For example, when antenna 1 is selected, the first element in the 4×1 matrix corresponding to antenna 1 is not 0, and the other three elements are all 0; when antenna 2 is selected, the 4×1 matrix corresponding to antenna 2 is The second element is not 0, the other elements are all 0.

When the codebook type corresponding to the precoding matrix is partially correlated, as shown in (b) in Figure 8, the 4 antennas are divided into two groups, and the complex symbols of each layer can pass through one of the two antennas For transmission, that is, the complex symbols of each layer can be allocated to two antennas in one of the antenna groups for transmission. For example, antenna 1 and antenna 3 are the first antenna group, and antenna 2 and antenna 4 are the second antenna group. When the first antenna group is selected, the complex symbols of each layer are allocated to antenna 1 and antenna 3 for transmission; when the second antenna group is selected, the complex symbols of each layer are allocated to antenna 2 and antenna 4 for transmission. Among them, the transmitting antennas in each antenna group are orthogonal to each other. It should be understood that when the codebook type is partially correlated, the partially correlated codebook set includes uncorrelated codebook sets. For the complex symbols of each layer, after selecting a certain antenna group, all the complex symbols of the layer can be selected. Assigned to one of the antennas in the antenna group. For example, when the first antenna group is selected for transmission, all the complex symbols of the layer may be allocated to antenna 1 in the first antenna group, or all the complex symbols of the layer may be allocated to antenna 3 in the first antenna group.

When the codebook type corresponding to the precoding matrix is fully correlated, as shown in (c) in Figure 8, the 4 transmit antennas can be combined arbitrarily, that is, the complex symbols of each layer can be allocated to 4 antennas For transmission, the 4 transmitting antennas are orthogonal to each other. It should be understood that the fully correlated codebook set includes a partially correlated codebook set and an uncorrelated codebook set. For the complex symbols of each layer, the complex symbols of the layer can be allocated to a certain antenna group of the 4 antennas. It is also possible to allocate the complex symbols of the layer to one of the four antennas for transmission.

In order to configure the precoding matrix for each terminal device, the network device can obtain each terminal device according to the sounding reference signal (sounding reference signal, SRS), channel state information reference signal (channel state information-reference signal, CSI-RS) and other measurement pilots. The channel information of the terminal device, for example, the base station can obtain the maximum number of layers transmitted by each terminal device according to the measurement pilot, and the network device can configure a different precoding matrix for each terminal device according to the maximum number of layers that each terminal device can transmit.

In the embodiment of the present application, optionally, the network device may configure the same precoding matrix for the second terminal device and the third terminal device.

In this implementation manner, the capabilities of the second terminal device and the third terminal device may be different. For example, the second terminal device and the third terminal device can support different maximum antenna ports, different supported maximum ranks or maximum layers, The set of supported precoding codebooks is different. The number of antenna ports corresponding to the precoding matrix configured by the network device should not be greater than the minimum number of antenna ports supported by all terminal devices. The number of layers corresponding to the precoding matrix configured by the network device should not be greater than the minimum number of layers supported by all terminal devices. The type of precoding matrix configured by the network device should belong to the intersection of the types of precoding matrix supported by all terminal devices.

Exemplarily, if the precoding codebook set fullAndPartialAndNonCoherent supported by all terminal devices, the precoding codebook set that can be configured by the network device is fullAndPartialAndNonCoherent.

Exemplarily, if the precoding codebook set supported by all terminal devices is fullAndPartialAndNonCoherent or partialAndNonCoherent, then the precoding codebook set that can be configured by the network device is partialAndNonCoherent.

Exemplarily, if the precoding codebook set supported by all terminal devices is FullAndPartialAndNonCoherent or PartialAndNonCoherent or non-correlated (NonCoherent), then the precoding codebook set that the network device can configure is NonCoherent.

Through this configuration method, the number of bits of configuration signaling can be saved.

As shown in FIG. 5, the network device configures the second terminal device and the third terminal device with the same precoding matrix, so each terminal device will use the same number of layers and the same number of ports to transmit the complex symbols mapped by TB1.

Optionally, the network device may also configure different precoding matrices for the second terminal device and the third terminal device.

In this configuration method, the capabilities of each terminal device may be different. For example, the maximum number of antenna ports that can be supported is different, the maximum rank or the maximum number of layers supported is different, and the type of precoding codebook supported is different. Since two terminal devices transmit the same data on the same time-frequency resource, the number of antenna ports corresponding to the precoding matrix configured by the network device for each terminal device should not be greater than the minimum number of antenna ports supported by all user equipment. The number of layers corresponding to the precoding matrix configured by the network device for each terminal device should be the same, and the number of corresponding layers should not be greater than the minimum number of layers supported by all terminal devices. The network device performs independent precoding configuration for each terminal device. The precoding of each terminal device can be configured through downlink control information (DCI) signaling, it can also be configured through radio resource control (RRC) signaling, and it can also be configured through RRC signaling. The candidate sets are selected through DCI signaling.

As shown in FIG. 6, the second terminal device supports 2 ports, and the third terminal device supports 4 ports. Therefore, the network device configures precoding matrix 0 for the second terminal device and precoding matrix 1 for the third terminal device, so that the second terminal device can send data through 2 ports, and the third terminal device can send data through 4 ports . The third terminal device can improve performance such as antenna selection and beam forming through 4 ports.

Through this configuration method, the transmission capacity of each terminal device can be utilized to the maximum.

S410 to S411, resource mapping, and generating OFDM symbols. For a complex symbol stream corresponding to an antenna port

Map it on the frequency domain resources allocated by the network device, and then generate OFDM symbols for transmission.

The above steps S401 to S411 describe in detail the process of generating PUSCH from TB1 when the second terminal device sends all of TB1, and the network device configures the second terminal device and the third terminal device with the same RV version. In the process of the terminal device generating the PUSCH, the network device may configure the terminal device. When the second terminal device sends all of TB1, and the network device configures the same RV version for the second terminal device and the third terminal device, the network device can perform the same configuration for each terminal device. Exemplarily, each terminal device may be configured with the same MCS, RV version, initialization information of the scrambling sequence, whether to perform conversion precoding, time-frequency resources, rate matching resources, and whether to perform frequency-domain frequency hopping configuration. Among them, if there is a terminal device that does not support frequency domain frequency hopping, the network device does not set frequency domain frequency hopping for the terminal devices.

In addition, in the process of mapping the transport block to the PUSCH, it is also necessary to generate a demodulation reference signal (DMRS) for the demodulation of the PUSCH channel.

Figure 9 is the DMRS generation process. As shown in Figure 9, the DMRS generation process includes steps S701 to S704.

S701: Generate DMRS sequences for different layers. The terminal device generates a DMRS sequence for each layer when the terminal device performs layer mapping in step S408 of generating a PUSCH based on the configuration information of the network device. The DMRS configuration information of the network device to the terminal device may include the DMRS port, the number of preload symbols, the number and location of additional DMRS, and so on.

S702 to S704, after merging the DMRS sequence of the corresponding layer with the complex symbols of each layer in step S408 in the PUSCH generation process, execute the steps described in S409 to S411 in the PUSCH generation process.

When each terminal device sends all of TB1 and the network device configures each terminal device with the same RV version, the network device can also configure each terminal device with the same DMRS configuration information.

In the above embodiment, the second terminal device and the third terminal device both send the same TB1, and the network device combines and decodes the signals sent by the second terminal device and the third terminal device, which improves the received power and diversity of the network device. Gain.

Optionally, in the case where the second terminal device and the third terminal device both send all of TB1, the network device may also configure different RV versions for the second terminal device and the third terminal device. Exemplarily, the network device may configure RV0 for the second terminal device, and may configure RV1 for the third terminal device.

When the second terminal device and the third terminal device both send all of TB1 and the network device configures the second terminal device and the third terminal device with different RV versions, the method of mapping from TB1 to PUSCH is the same as step S401 to step S411. I will not go into details here.

In the process of the terminal device generating the PUSCH, the network device may configure the terminal device. The network device can perform the same MCS, scrambling sequence initialization information, whether to perform conversion precoding, time-frequency resources, rate matching resources, and whether to perform frequency-domain frequency hopping configuration for each terminal device. Among them, if there is a user equipment that does not support frequency domain frequency hopping, the base station does not set frequency domain frequency hopping for the user equipment. The network device can configure different RV versions for each terminal device.

In addition, in the process of mapping the transport block to the PUSCH, it is also necessary to generate a DMRS for demodulation of the PUSCH channel.

When the second terminal device and the third terminal device both send all of TB1 and the network device configures the second terminal device and the third terminal device with different RV versions, the DMRS generation process is as described in step S701 to step S704, in order to avoid Repeat, no longer go into details.

When each terminal device sends all of TB1 and the network device configures a different RV version for each terminal device, the network device can also independently configure different DMRS configuration information for each terminal device.

As an embodiment, the second terminal device in the communication cooperation group may send the first part of the transmission block TB1, and the third terminal device may send the second part of the transmission block TB1. The two terminal devices in the communication cooperation group respectively forward different parts of TB1, so that multiplexing gain can be obtained at the receiving end, and the performance of uplink transmission is improved.

Optionally, the second terminal device may send the sub-transport block of TB1. Fig. 10 is a flowchart of the second terminal device transmitting the sub-transport block of TB1. As shown in FIG. 10, the second terminal device or the third terminal device transmits the sub-transport block of TB1 through step S801 to step S812.

S801, TB is divided into blocks. In the embodiment of the present application, the second terminal device in the communication cooperation group sends a sub-transport block of TB1, and the sub-transport block is a bit stream formed by multiple consecutive bits of TB1. For example, TB1 is divided into two sub-transport blocks, sub-transport block 0 and sub-transport block 1. As described in step S401, all the bits contained in TB1 are denoted as a ₀ ,a ₁ ,a ₂ ,...,a _A-1 , and the bits contained in sub-transmission block 0 are a ₀ ,a ₁ ,a ₂ ,...,a _i , sub-transmission block 0 is allocated to the second terminal device for transmission, sub-transmission block 1 contains bits a _i+1 ,a _i+2 ,...,a _A-1 , sub-transmission block 1 is allocated to the third terminal device Send it. It should be understood that sub-transmission block 0 and sub-transmission block 1 are only for distinguishing two different sub-transmission blocks, and do not represent the priority of the two sub-transmission blocks. It should also be understood that in FIG. 10, only two terminal devices in the communication cooperation group are taken as an example. In practical applications, there may be other numbers of terminal devices in the communication cooperation group, and TB1 may also be divided into other numbers of sub-transmission blocks. This embodiment of the application does not limit this.

S802 to S812, the second terminal device maps the allocated sub-transport block 0 to the PUSCH for transmission; the third terminal device maps the allocated sub-transport block 1 to the PUSCH for transmission. The method of mapping the transport block to the PUSCH from step S802 to step S812 is consistent with step S401 to step S411, and will not be described in detail in order to avoid repetition.

By dividing the transmission block into multiple sub-transmission blocks to be transmitted by different terminal devices, multiplexing gain can be obtained at the receiving end. In addition, during the transmission, if there is a transmission error in a certain sub-transmission block, other sub-transmission blocks can also determine whether the transmission is correct through their own CRC, so the receiving end only needs to process the sub-transmission block with the transmission error.

Optionally, the second terminal device may send a part of the bit stream with the CRC appended to the TB1. Fig. 11 is a flow chart of the second terminal device transmitting a part of the CRC-added bit stream of the TB1. As shown in FIG. 11, the second terminal device or the third terminal device transmits a part of the CRC-added bit stream of the TB1 through step S901 to step S912.

S901: Generate TB CRC. In step S901, as described in step S401 above, the CRC generated by TB1 is written as a ₀ ,a ₁ ,a ₂ ,...,a _A-1 b ₀ ,b ₁ ,b ₂ ,...,b _B-1 .

S902, divide into blocks. For TB1 to which CRC is added, the second terminal device transmits a bit stream formed by a plurality of consecutive bits of TB1 to which CRC is added. For example, as shown in Figure 11, TB1 with CRC attached is divided into two parts. The bit stream contained in the first part can be a ₀ , a ₁ , a ₂ ,..., a _i . The first part is allocated to the second terminal device. Send; the bit stream contained in the second part can be a _i+1 ,a _i+2 ,...,a _A-1 b ₀ ,b ₁ ,b ₂ ,...,b _B-1 , and the second part is allocated to the first Three terminal devices transmit.

S903 to S912, the second terminal device maps the allocated first part of the bit stream to the PUSCH for transmission; the third terminal device maps the allocated second part of the bit stream to the PUSCH for transmission. The method of mapping the bit stream of the transport block to the PUSCH from step S903 to step S912 is consistent with step S401 to step S411, and will not be described in detail in order to avoid repetition.

By dividing the CRC-added TB1 into multiple parts for transmission by different terminal devices, multiplexing gain can be obtained at the receiving end. In addition, the receiving end can perform demodulation and decoding according to a transmission block of a virtual user. For high-level protocols, the processing flow of this transmission block is equivalent to that the first terminal device transparently transmits a transmission block directly to the receiving end. , Thereby avoiding additional high-level protocol procedures.

Optionally, the second terminal device may send some of the code blocks corresponding to TB1. Fig. 12 is a flow chart of the second terminal device transmitting the partial CB corresponding to the CB TB1. As shown in FIG. 12, the second terminal device or the third terminal device transmits the partial CB of the CB corresponding to TB1 through step S1001 to step S1011.

S1001 to S1002, as described in the above steps S401 to S402, a total of TB1 with CRC can be divided into N CBs, which are marked as {1,2,...,N-1}. For example, N=4, TB1 is divided into CB0, CB1, CB2, and CB3 after adding CRC.

S1003, generate CB CRC. The second terminal device is allocated to a plurality of consecutive CB {CB _i ,CB _i+1 ,...CB _i+I-1 }. For example, as shown in Figure 12, CB0 and CB1 are allocated to the second terminal device, and CB2 and CB3 are allocated to the third terminal device. The second terminal device adds CRC to CB0 and CB1, respectively; the third terminal device pairs CB2 and CB1. CB3 is attached with CRC respectively.

From S1004 to S1011, the second terminal device maps the allocated CB0 and CB1 to the PUSCH for transmission, and the third terminal device maps CB2 and CB3 to the PUSCH for transmission. The method of mapping the transport block to the PUSCH from step S1004 to step S1011 is consistent with step S404 to step S411, and will not be described in detail.

By dividing the CRC-added TB1 into multiple parts for transmission by different terminal devices, multiplexing gain can be obtained at the receiving end. In addition, in this implementation mode, the bit stream of the transmission block has been divided into multiple code blocks in advance. When the network device indicates the allocated code block to each terminal device, only a small number of bits is required, which saves information. Let bit.

In the process of generating the PUSCH by the terminal device shown in FIG. 10 to FIG. 12, the network device can independently configure each terminal device. The network device can perform independent MCS, RV version, scrambling sequence initialization information for each terminal device, whether to perform conversion precoding, time-frequency resources, rate matching resources, and whether to perform frequency-domain frequency hopping configuration. Among them, if there is a user equipment that does not support frequency domain frequency hopping, the base station does not set frequency domain frequency hopping for the user equipment.

Wherein, for the initialization information of the scrambling sequence, the network device can perform independent scrambling sequence initialization information configuration for each terminal device, and the network device can also perform the same scrambling sequence initialization information configuration for each terminal device.

Exemplarily, when the network device configures independent scrambling sequence initialization information for each terminal device, the initialization of the scrambling sequence may be related to the user cooperation-radio network temporary identifier (UC-RNTI), c _init = F(UC-RNTI, n _ID ). The network device can configure the same UC-RNTI for each terminal device, or configure an independent n _ID for each terminal device.

Exemplarily, when the network device configures the same scrambling sequence initialization information for each terminal device, each terminal device is configured with the same UC-RNTI and n _ID .

In addition, in the process of mapping the transport block to the PUSCH, it is also necessary to generate a DMRS for the demodulation of the PUSCH channel.

When the second terminal device and the third terminal device respectively send different parts of the TB1, the DMRS generation process is as described in step S701 to step S704, in order to avoid repetition, no further details will be given. The network device can configure independent DMRS information for each terminal device.

As an embodiment, the second terminal device may transmit partially continuous complex symbols of the TB1 modulated complex symbols.

As described in step S407 above, after TB1 is modulated, there are a total of P complex symbols p ₀ , p ₁ , p ₂ ,..., p _P-1 , and there are a total of U terminal devices in the process of assisting the first terminal device to forward the transport block Participating in cooperative forwarding, the number of layers that each terminal device can transmit on the channel is {L ₀ , L ₁ , L ₂ ,..., L _U-1 }; then the number of complex symbols allocated to the i-th terminal device is

The complex symbol flow is

among them,

After assigning multiple consecutive complex symbols to each terminal device, each terminal device performs independent layer mapping and precoding operations on the assigned complex symbols.

Fig. 13 is a flow chart of the second terminal device transmitting partially continuous complex symbols of the TB1 modulated complex symbols. As shown in FIG. 13, the second terminal device or the third terminal device transmits partially continuous complex symbols of the TB1 modulated complex symbols through steps S1101 to S1112.

S1101 to S1107, as described in the above steps S401 to S407, the second terminal device or the third terminal device maps TB1 to the complex symbol stream p ₀ , p ₁ , p ₂ ,..., p _P-1 .

S1108, distribution of plural symbols. The network device allocates a part of continuous complex symbols to the second terminal device according to the transmission capability of the second terminal device. For example, the number of layers supported by the second terminal device is 3 layers, and the number of layers supported by the third terminal device is layer 1, then the network device allocates complex symbols corresponding to 3 layers to the second terminal device, and 1 layer corresponds to the third terminal device Plural symbol.

From S1109 to S1112, the second terminal device or the third terminal device respectively performs independent layer mapping and precoding operations on the allocated complex symbols, and then maps the allocated complex symbols to the PUSCH for transmission. Wherein, the method of mapping complex symbols to PUSCH from step S1109 to step S1112 is consistent with step S408 to step S411, and will not be described in detail.

In the process of generating PUSCH, the network device can perform the same MCS, RV version, rate matching resources, scrambling information, time-frequency resources, whether to perform conversion precoding, and perform the same configuration for each terminal device. The precoding and DMRS of the terminal device are independently configured. Among them, for the scrambled initialization information, the same UC-RNTI and n _ID can be configured for each terminal device.

In this implementation manner, the receiving end can treat the signals sent by different user equipment as data of a virtual user for demodulation and decoding, which improves the uplink transmission capability. In addition, there are more identical configurations among multiple cooperative forwarding user equipments, which saves configuration signaling bits.

With reference to FIGS. 4 to 13, in the foregoing actual manner, the application scenario shown in (a) in FIG. 1 is taken as an example to describe the cooperative communication method of the embodiment of the present application in detail. It should be understood that the cooperative communication method of the embodiment of the present application may also be applied to the application scenarios shown in the other schematic diagrams in FIG. 1, which is not limited in this application. In addition, the embodiments of the present application can be applied to a scenario where there are only the first terminal device and the second terminal device in the communication cooperation group. When there are only the first terminal device and the second terminal device in the communication cooperation group, in the second stage of transmission, the communication method of the first terminal device is the same as the communication method of the third terminal device in the above-mentioned embodiment, and will not be detailed again. Narrated.

Above, the wireless communication method according to the embodiment of the present application is described in detail with reference to Figs. 1 to 13, and the wireless communication device according to the embodiment of the present application is described in detail below with reference to Figs. 14 to 18.

FIG. 14 is a schematic structural diagram of a wireless communication device 1200 according to an embodiment of the present application. The wireless communication device belongs to the second terminal device in the communication cooperation group. As shown in FIG. 14, the wireless communication device 1200 includes an acquiring module 1210 and a sending module 1220.

The obtaining module 1210 is configured to obtain all the transmission blocks of the first terminal device in the communication cooperation group.

The sending module 1220 is used to send all or the first part of the transmission block to the network device; wherein, when the second terminal device sends all of the transmission block to the network device, the first terminal device or the third terminal device sends the transmission block to the network device Or, when the second terminal device sends the first part of the transmission block to the network device, the first terminal device or the third terminal device sends the second part of the transmission block to the network device, where the first part and the second part are the transmission For different parts of the block, the third terminal device is in the communication cooperation group.

As an embodiment, in the process of assisting the first terminal device to send the transmission block, the first terminal device or the third terminal device sends all of the transmission block, and the RV of the transmission block sent by the first terminal device or the third terminal device The version is the same as or different from the RV version of the transport block sent by the second terminal device.

Exemplarily, the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is not greater than the smallest antenna port supported by the second terminal device and the third terminal device The number of layers corresponding to the same precoding matrix is not greater than the minimum number of layers supported by the second terminal device and the third terminal device, and the type of the same precoding matrix is supported by the second terminal device and the third terminal device. The intersection of the precoding matrix types.

Exemplarily, the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to different precoding matrices is not greater than the minimum antenna port supported by the second terminal device and the third terminal device The number of layers corresponding to different precoding matrices is the same and is not greater than the minimum number of layers supported by the second terminal device and the third terminal device.

Optionally, the first part and the second part are different sub-transport blocks of the transport block, and the sub-transport block is a plurality of consecutive bits in the transport block; or, the first part and the second part are the bit stream after the CRC is added to the transport block. Different parts; or, the first part and the second part are different code blocks of multiple code blocks corresponding to the transmission block; or, the first part and the second part are different symbols of the multiple symbols after the transmission block is modulated.

According to the wireless communication device of the present application, the terminal device in the communication cooperation group assists the first terminal device to send the transmission block, and the first terminal device can use the transmission capacity of idle users to enable the terminal devices in the communication cooperation group to perform effective cooperative transmission , Improve the uplink transmission capacity.

FIG. 15 is a schematic diagram of another wireless communication device according to an embodiment of the present application. The wireless communication device may correspond to the first terminal device, or the second terminal device, or the third terminal device, or the first target terminal device in the embodiment of the present application. The wireless communication device includes a transceiver unit 1310 and a processing unit 1320.

The transceiver unit 1310 is used to receive or send control information and transmission blocks.

The processing unit 1320 is used to process the received control information or data.

When the first, second, third terminal device or the first target terminal device is a terminal device or user equipment, the transceiver unit 1310 can be a sending unit or a transmitter when sending information, and the transceiver unit 1310 can be a receiving unit when receiving information. Unit or receiver, the transceiver unit may be a transceiver, and the transceiver, transmitter, or receiver may be a radio frequency circuit. When the first, second, or third terminal device or the first target terminal device includes a storage unit, the storage The unit is used to store computer instructions, the processor is in communication connection with the memory, and the processor executes the computer instructions stored in the memory to make the first terminal device, the second terminal device, the third terminal device, and the first target terminal device execute FIGS. 2 to 13 shows the method involved in the embodiment. Among them, the processor may be a general-purpose central processing unit (CPU), a microprocessor, or an application specific integrated circuit (ASIC).

When the first, second, third terminal device or the first target terminal device is a chip, the transceiving unit 1310 may be an input and/or output interface, a pin, a circuit, or the like. The processing unit can execute the computer-executable instructions stored in the storage unit, so that the chip in the first terminal device, the second terminal device, the third terminal device, or the first target terminal device executes the methods involved in FIGS. 2 to 13. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (read-only memory). Only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.

FIG. 16 is a schematic structural diagram of a wireless communication device 1400 in an embodiment of the present application. As shown in FIG. 16, the wireless communication device 1400 includes a receiving module 1410.

The receiving module 1410 is used to receive all the transmission blocks of the first terminal device sent by the second terminal device; the receiving module is also used to receive all the transmission blocks sent by the first terminal device or the third terminal device, where the first terminal The device, the second terminal device, and the third terminal device belong to the same communication cooperation group.

As an embodiment, the first terminal device or the third terminal device sends all of the transmission block, and the RV version of the transmission block sent by the first terminal device or the third terminal device, and the transmission block sent by the second terminal device The RV version is the same or different.

FIG. 17 is a schematic structural diagram of a wireless communication device 1500 according to an embodiment of the present application. As shown in FIG. 17, the wireless communication device 1500 includes a receiving module 1510.

The receiving module 1510 is configured to receive the first part of the transmission block of the first terminal device sent by the second terminal device; the receiving module is also configured to receive the second part of the transmission block sent by the first terminal device or the third terminal device, where The first terminal device, the second terminal device, and the third terminal device belong to the same communication cooperation group, and the first part and the second part are different parts of the transmission block.

Optionally, the first part and the second part are different sub-transport blocks of the transport block, and the sub-transport block is a plurality of consecutive bits in the transport block; or, the first part and the second part are the bits after the CRC is added to the transport block Different parts of the stream; or, the first part and the second part are different code blocks of multiple code blocks corresponding to the transport block; or, the first part and the second part are different symbols of the multiple symbols modulated by the transport block.

The wireless communication device 1400 and the wireless communication device 1500 of the embodiment of the present application may correspond to the network device in the method of the embodiment of the present application.

FIG. 18 is a schematic diagram of another wireless communication device according to an embodiment of the present application. The wireless communication device may correspond to the network device in the embodiment of the present application. The wireless communication device includes a transceiver unit 1610 and a processing unit 1620.

The transceiver unit 1610 is configured to receive a scheduling request of a terminal device, receive uplink data of the terminal device, or send downlink control information.

The processing unit 1620 is used to determine downlink control information.

When the network device is a network device, the transceiving unit 1610 can be a transmitting unit or a transmitter when sending information, the transceiving unit 1610 can be a receiving unit or a receiver when receiving information, and the transceiving unit can be a transceiver. The device or receiver may be a radio frequency circuit. When the network device includes a storage unit, the storage unit is used to store computer instructions. The processor is in communication connection with the memory, and the processor executes the computer instructions stored in the memory, so that the network device executes Figure 2 to The method involved in the embodiment shown in FIG. 13. Among them, the processor may be a general-purpose central processing unit (CPU), a microprocessor, or an application specific integrated circuit (ASIC).

When the network device is a chip, the transceiver unit 1610 may be an input and/or output interface, pin or circuit, or the like. The processing unit can execute the computer-executable instructions stored in the storage unit, so that the chip in the network device executes the methods involved in FIGS. 2 to 14. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (read-only memory). Only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.

The embodiments of the present application also provide a computer-readable medium, and the computer-readable medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes any of the above-mentioned method embodiments. In the method.

The embodiment of the present application also provides a chip system, including a memory and a processor, the memory is used to store a computer program, the processor is used to call and run the computer program from the memory, so that the communication device installed with the chip system executes The method in any of the above method embodiments.

Wherein, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

An embodiment of the present application also provides a communication system, including: a communication device for executing the method in any of the foregoing embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a storage medium, or transmitted from one storage medium to another storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as coaxial cable, optical fiber, etc.). , Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website, computer, server, or data center. The storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.

It should be understood that “one embodiment” or “an embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

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

A person of ordinary skill in the art may realize that, in combination with the method steps described in the embodiments disclosed herein, it can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the interchangeability of hardware and software. In the above description, the steps of each embodiment have been generally described in terms of function. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. A person of ordinary skill in the art may use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present application.

Those of ordinary skill in the art may realize that the various illustrative logical blocks and steps described in the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. achieve. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above 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 can be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A wireless communication method, characterized by comprising:

The second terminal device acquires all of the transmission blocks of the first terminal device in the communication cooperation group in which the second terminal device is located;

Sending, by the second terminal device, all or the first part of the transmission block to the network device;

Wherein, when the second terminal device sends all of the transmission block to the network device, the first terminal device or the third terminal device sends all of the transmission block to the network device; or When the second terminal device sends the first part of the transmission block to the network device, the first terminal device or the third terminal device sends the second part of the transmission block to the network device, wherein The first part and the second part are different parts of the transmission block, and the third terminal device is in the communication cooperation group.
The method according to claim 1, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the third terminal device transmits The RV version of the redundancy version of the transmission block is the same as or different from the RV version of the transmission block sent by the second terminal device.
The method according to claim 1 or 2, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the second terminal device The precoding of the transport block sent by the device is the same as or different from the precoding of the transport block sent by the second terminal device.
The method according to claim 3, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the same precoding matrix is not greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device The number of layers, the type of the same precoding matrix is an intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.
The method according to claim 3, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to the different precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the different precoding matrices is the same and not greater than that supported by the second terminal device and the third terminal device The minimum number of layers.
The method according to claim 1, wherein the first part and the second part are different sub-transmission blocks of the transmission block, and the sub-transmission block is a plurality of consecutive bits in the transmission block ;or,

The first part and the second part are different parts of the bit stream after the cyclic redundancy code CRC is added to the transport block; or,

The first part and the second part are different code blocks of a plurality of code blocks corresponding to the transmission block; or,

The first part and the second part are different symbols of a plurality of symbols modulated by the transport block.
A wireless communication method, characterized by comprising:

The network device receives all of the transmission block of the first terminal device sent by the second terminal device;

The network device receives all of the transmission block sent by the first terminal device or the third terminal device, wherein the first terminal device, the second terminal device, and the third terminal device belong to the same communication Collaboration group.
The method according to claim 7, wherein the RV version of the transmission block sent by the first terminal device or the third terminal device and the RV version of the transmission block sent by the second terminal device The RV version is the same or different.
The method according to claim 7 or 8, wherein the precoding of the transport block sent by the first terminal device or the third terminal device and the transmission sent by the second terminal device The precoding of the blocks is the same or different.
The method according to claim 9, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the same precoding matrix is not greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device The number of layers, the type of the same precoding matrix is an intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.
The method according to claim 9, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to the different precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the different precoding matrices is the same and not greater than that supported by the second terminal device and the third terminal device The minimum number of layers.
A wireless communication device, wherein the wireless communication device belongs to a second terminal device in a communication cooperation group, and the wireless communication device includes:

An obtaining module, configured to obtain all the transmission blocks of the first terminal device in the communication cooperation group;

A sending module, configured to send all or the first part of the transmission block to a network device;

Wherein, when the second terminal device sends all of the transmission block to the network device, the first terminal device or the third terminal device sends all of the transmission block to the network device; or When the second terminal device sends the first part of the transmission block to the network device, the first terminal device or the third terminal device sends the second part of the transmission block to the network device, wherein The first part and the second part are different parts of the transmission block, and the third terminal device is in the communication cooperation group.
The device according to claim 12, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the third terminal device transmits The RV version of the redundancy version of the transmission block is the same as or different from the RV version of the transmission block sent by the second terminal device.
The device according to claim 12 or 13, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the second terminal device The precoding of the transport block sent by the device is the same as or different from the precoding of the transport block sent by the second terminal device.
The device according to claim 14, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the same precoding matrix is not greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device The number of layers, the type of the same precoding matrix is an intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.
The device according to claim 14, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device are different, and the number of antenna ports corresponding to the different precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the different precoding matrices is the same and not greater than that supported by the second terminal device and the third terminal device The minimum number of layers.
The apparatus according to claim 12, wherein the first part and the second part are different sub-transmission blocks of the transmission block, and the sub-transmission block is a plurality of consecutive bits in the transmission block ;or,

The first part and the second part are different parts of the bit stream after the cyclic redundancy code CRC is added to the transport block; or,

The first part and the second part are different code blocks of a plurality of code blocks corresponding to the transmission block; or,

The first part and the second part are different symbols of a plurality of symbols modulated by the transport block.
A wireless communication device, characterized in that, the wireless communication device belongs to a network device, and the wireless communication device includes:

A receiving module, configured to receive all the transmission blocks of the first terminal device sent by the second terminal device;

The receiving module is further configured to receive all of the transmission block sent by the first terminal device or the third terminal device, wherein the first terminal device, the second terminal device, and the third terminal device Belong to the same communication cooperation group.
The device according to claim 18, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the third terminal device transmits The RV version of the redundancy version of the transmission block is the same as or different from the RV version of the transmission block sent by the second terminal device.
The device according to claim 18 or 19, wherein the first terminal device or the third terminal device transmits all of the transmission block, and the first terminal device or the third terminal device The precoding of the transport block sent by the device is the same as or different from the precoding of the transport block sent by the second terminal device.
The device according to claim 20, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is the same, and the number of antenna ports corresponding to the same precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the same precoding matrix is not greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device The number of layers, the type of the same precoding matrix is an intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.
The device according to claim 20, wherein the precoding of the transmission block sent by the second terminal device and the third terminal device is different, and the number of antenna ports corresponding to the different precoding matrix is different. Greater than the minimum number of antenna ports supported by the second terminal device and the third terminal device, and the number of layers corresponding to the different precoding matrices is the same and not greater than that supported by the second terminal device and the third terminal device The minimum number of layers.