CN114731174A

CN114731174A - Wireless communication method and communication device

Info

Publication number: CN114731174A
Application number: CN201980102436.2A
Authority: CN
Inventors: 丁梦颖; 廖树日; 马驰翔; 张鹏; 许华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2022-07-08
Also published as: WO2021134622A1

Abstract

The application provides a wireless communication method and a communication device, wherein the method comprises the following steps: the second terminal device acquires all transmission blocks of the first terminal device in the communication cooperation group where the second terminal device is located; the second terminal device transmitting all or a first part of the transport block to the network device; wherein, when the second terminal device transmits all of the transport blocks to the network device, the first terminal device or the third terminal device transmits all of the transport blocks to the network device; alternatively, when the second terminal device transmits a first part of the transport block to the network device, the first terminal device or a third terminal device transmits a second part of the transport block to the network device, wherein the first part and the second part are different parts of the transport block, and the third terminal device is in the communication cooperation group. The terminal devices in the communication cooperation group can improve the uplink transmission capability of the system by cooperatively transmitting the transmission block of the first terminal device.

Description

Wireless communication method and communication device

Technical Field

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

Background

With the rapid development of wireless communication technology, a great deal of new wireless service types, such as internet of things, automatic driving and the like, emerge, and various wireless communication services put higher demands on the quality of a wireless communication system. Due to the consideration of cost, radiation, etc., the transmission power, the transmitting and receiving antennas, and the processing capability of the current user equipment are all limited, which results in that the uplink transmission capability in the current network is limited, and in order to meet the requirements of various wireless communication services, the capacity of the wireless communication system and the coverage of the network need to be improved.

Disclosure of Invention

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

In a first aspect, a wireless communication method is provided, including: the second terminal device acquires all transmission blocks of the first terminal device in the communication cooperation group where the second terminal device is located; the second terminal device transmitting all or a first part of the transport block to the network device; wherein, when the second terminal device transmits all of the transport blocks to the network device, the first terminal device or the third terminal device transmits all of the transport blocks to the network device; alternatively, when the second terminal device transmits a first part of the transport block to the network device, the first terminal device or a third terminal device transmits a second part of the transport block to the network device, wherein the first part and the second part are different parts of the transport block, the third terminal device being in the communication cooperation group.

In the above technical solution, the second terminal device in the communication coordination group assists the first terminal device to send the transmission block of the first terminal device, so that the first terminal device obtains the transmission power and the antenna capability of the second terminal device, and virtual multiple-input multiple-output (MIMO) transmission of multiple users is formed, thereby improving uplink transmission capability.

With reference to the first aspect, in one possible implementation manner of the first aspect, the first terminal device or the third terminal device transmits all the transport blocks, and a Redundancy Version (RV) of the transport block transmitted by the first terminal device or the third terminal device is the same as or different from an RV version of the transport block transmitted by the second terminal device.

In the above technical solution, two terminal devices in the communication cooperative group both transmit all of the transmission blocks, so that a receiving end can obtain a gain of transmitting power combination, and uplink transmission capability is improved. When the RV versions of the transmission blocks sent by the two terminal devices are different, the receiving end respectively decodes the transmission blocks with different RV versions and then combines the transmission blocks, and therefore decoding reliability is improved.

Optionally, the first terminal device or the third terminal device transmits all of the transport blocks, and the precoding of the transport blocks transmitted by the first terminal device or the second terminal device is the same as or different from the precoding of the transport blocks transmitted by the second terminal device.

Optionally, the precoding of the transport blocks sent by the second terminal device and the third terminal device is the same, the number of antenna ports 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 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 intersection of the precoding matrix types supported by the second terminal device and the third terminal device.

Optionally, the precoding of the transmission blocks sent by the second terminal device is different from that of the transmission blocks sent by the third terminal device, 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, and 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 transmission blocks sent by the two terminal devices is different, the transmission capability of each terminal device can be utilized to the maximum extent, and the uplink transmission capability is improved.

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-transport blocks of the transport block, and a sub-transport block is a plurality of consecutive bits in the transport block; or, the first part and the second part are different parts of the bit stream after Cyclic Redundancy Code (CRC) is attached to the transport block; or the first portion and the second portion are different code blocks of a plurality of code blocks corresponding to the transport block; or the first part and the second part are different symbols of the plurality of symbols after transmission block modulation.

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

In a second aspect, a wireless communication method is provided, including: the network device receives all the transmission blocks of the first terminal device sent by the second terminal device; the network device receives all the transmission blocks transmitted 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.

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

With reference to the second aspect, in a possible implementation manner of the second aspect, the first terminal device or the third terminal device transmits all the transport blocks, and the RV version of the transport block transmitted by the first terminal device or the third terminal device is the same as or different from the RV version of the transport block transmitted by the second terminal device.

Optionally, the precoding of the transport blocks sent by the second terminal device and the third terminal device is the same, the number of antenna ports 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 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 intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.

Optionally, the precoding of the transport blocks sent by the second terminal device is different from that of the transport blocks sent by the third terminal device, 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, and 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: the 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 second part of the transport block transmitted by the first terminal device or a third terminal device, wherein 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 transport 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 transport block, and a sub transport block is a plurality of consecutive bits in the transport block; or the first part and the second part are different parts of the bit stream after the CRC is attached to the transmission block; or the first portion and the second portion are different code blocks of a plurality of code blocks corresponding to the transport block; or the first part and the second part are different symbols of the plurality of symbols after transmission block modulation.

In a fourth aspect, there is provided a wireless communication apparatus belonging to a second terminal apparatus in a communication cooperation group, the wireless communication apparatus comprising: an acquisition module configured to acquire all transport blocks of a first terminal apparatus in a communication cooperation group; a sending module for sending all or a first portion of the transport block to a network device; wherein, when the second terminal device transmits all of the transport blocks to the network device, the first terminal device or the third terminal device transmits all of the transport blocks to the network device; alternatively, when the second terminal device transmits a first part of the transport block to the network device, the first terminal device or a third terminal device transmits a second part of the transport block to the network device, wherein the first part and the second part are different parts of the transport 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 transmits all the transport blocks, and the RV version of the transport block transmitted by the first terminal device or the third terminal device is the same as or different from the RV version of the transport block transmitted by the second terminal device.

When the precoding of the transport blocks sent by the two terminal apparatuses is different, the transport capability of each terminal apparatus can be utilized to the maximum extent, and the uplink transport capability is improved.

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

In a fifth aspect, a wireless communication apparatus is provided, the apparatus comprising: a receiving module, configured to receive all transmission blocks of a first terminal device sent by a second terminal device; the receiving module is further configured to receive all the transport blocks 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.

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

In a sixth aspect, a wireless communication apparatus is provided, the apparatus comprising: a receiving module, configured to receive a first part of a transport block of a first terminal device sent by a second terminal device; the receiving module is further configured to receive a second part of the transport block sent by the first terminal device or a 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 transport 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 transport blocks of the transport block, and a sub transport block is a plurality of consecutive bits in the transport block; or, the first part and the second part are different parts of the bit stream after the CRC is added to the transmission block; or the first portion and the second portion are different code blocks of a plurality of code blocks corresponding to the transport block; or the first part and the second part are different symbols of the plurality of symbols after transmission block modulation.

In a seventh aspect, a computer program product is provided, which, when run on a wireless communication apparatus, causes the wireless communication apparatus to perform the method of any one of the possible implementations of the first aspect.

In an eighth aspect, a computer program product is provided, which, when run on a wireless communication apparatus, causes the wireless communication apparatus to perform the method of any one of the possible implementations of the second aspect.

In a ninth aspect, a computer program product is provided, which, when run on a wireless communication apparatus, causes the wireless communication apparatus to perform the method of any of the possible implementations of the third aspect.

A tenth aspect provides a computer-readable storage medium having stored thereon a computer program or instructions, which, when executed, cause a computer to perform the method of any one of the possible implementations of the first aspect.

In an eleventh aspect, a computer-readable storage medium is provided, having stored thereon a computer program or instructions, which, when executed, cause a computer to perform the method of any of the possible implementations of the second aspect described above.

In a twelfth aspect, a computer-readable storage medium is provided, on which a computer program or instructions are stored, which, when executed, cause a computer to perform the method of any one of the possible implementations of the third aspect.

In a thirteenth aspect, a chip system is provided, comprising a processor configured to perform the method of any one of the possible implementations of the first aspect. The system-on-chip may include, among other things, input circuitry or interfaces for transmitting information or data, and output circuitry or interfaces for receiving information or data.

In a fourteenth aspect, a chip system is provided, which includes a processor configured to perform the method of any one of the possible implementations of the second aspect. The system-on-chip may include, among other things, input circuitry or interfaces for transmitting information or data, and output circuitry or interfaces for receiving information or data.

In a fifteenth aspect, a chip system is provided, which includes a processor configured to perform the method in any one of the possible implementations of the third aspect. The system-on-chip may include, among other things, input circuitry or interfaces for transmitting information or data, and output circuitry or interfaces for receiving information or data.

In a sixteenth aspect, there is provided a communication system comprising: the communication device is configured to perform the method of any of the above-mentioned possible implementations of the first aspect, and/or the communication device is configured to perform the method of any of the above-mentioned possible implementations of the second aspect, and/or the communication device is configured to perform the method of any of the above-mentioned possible implementations of the third aspect.

Drawings

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

fig. 2 is a flow chart of a wireless communication method according to an embodiment of the present application;

fig. 3 is a flow chart illustrating another method of wireless communication according to an embodiment of the present application;

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

fig. 5 is a schematic diagram of a PUSCH generating procedure of a physical uplink shared channel according to an embodiment of the present application;

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

FIG. 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 demodulation reference signal DMRS generation process according to an embodiment of the present application;

fig. 10 is a schematic diagram of another PUSCH generation procedure in an embodiment of the present application;

fig. 11 is a schematic diagram of another PUSCH generating procedure according to an embodiment of the present application;

fig. 12 is a schematic diagram of another PUSCH generating procedure according to an embodiment of the present application;

fig. 13 is a schematic diagram of another PUSCH generating procedure 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;

FIG. 15 is a schematic diagram of another wireless communications apparatus 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 communications apparatus 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 Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are examples of a part of this application and not of all embodiments.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long term evolution (Long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) transmission capability, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a fifth generation (5G) system or a new radio system (UMTS), a wireless telecommunications network (2D), a future radio network (NR 2, a radio network, etc. may be used to improve the communication efficiency.

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

For facilitating understanding of the embodiments of the present application, an uplink user cooperative communication system suitable for the method provided in the embodiments of the present application is first described in detail with reference to fig. 1. Fig. 1 is a schematic diagram of a possible application scenario of an embodiment of the present application. As shown in fig. 1, the application scenario may include a plurality of terminal devices and network devices. As shown in fig. 1 (a), the first terminal device 110, the second terminal device 120 and the third terminal device 130 form a user cooperation group, and in the first phase of transmission, the first terminal device 110 transmits the first data to the second terminal device 120 and the third terminal device 130 through the sidelink 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 in various manners, such as amplify-forward, decode-forward, compress-forward, etc. As shown in fig. 1 (c), in the second phase of the 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 target terminal device 150. In the second stage of 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 transmit all or part of the first data to the network device 140. As shown in fig. 1(d), in the second phase 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 to other terminal devices, such as the first target terminal 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), only the first terminal device 110 and the second terminal device 120 may be in the communication cooperation group. In a first phase of the transmission, first end device 110 sends first data to second end device 120 over the sidelink, and in a second phase of the transmission, first end device 110 and second end device 120 send all or part of the first data to network device 140 or first target end device 150.

The first terminal device 110 may be called a source user equipment (source user equipment, SUE), the second terminal device 120 and the third terminal device 130 may be called cooperative terminal devices (coordinated user equipment, CUE), and the first target terminal device 150 may be called a Target User Equipment (TUE). In the embodiment of the present application described in fig. 1, only one source terminal device, two cooperative terminal devices, and one target terminal device are given as examples, and it should be understood that in an actual scenario, there may be a plurality of service terminal devices, a plurality of cooperative terminal devices, and a plurality of target terminal devices. Through the two-stage transmission, the first terminal device 110 transmits data to the network device 140 or the first target terminal device 150 with the cooperation of the second terminal device 120 and the third terminal device 130, and completes the cooperative transmission or relay transmission process between the respective terminal devices. The embodiment of the application is not only suitable for UE cooperation (UE cooperation) but also suitable for UE relay (UE relay).

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

1) The terminal device, the first terminal device, the second terminal device, the third terminal device and the first target terminal device referred to in this application may include various devices with wireless communication functions, such as an in-vehicle device, a wearable device, a computing device or other devices connected to a wireless modem, a Mobile Station (MS), a terminal (terminal) or a User Equipment (UE), or units, components, modules, devices, chips or SOCs in the devices. When the first to third terminal devices and the first target terminal device are vehicle-mounted devices, the first to third terminal devices and the first target terminal device may be placed or installed in a vehicle, the vehicle-mounted devices may be regarded as a part of the vehicle, or may be regarded as modules or modules to be installed in the vehicle, and the vehicle-mounted terminal devices may also be referred to as On Board Units (OBUs).

The first to third terminal apparatuses and the first target terminal apparatus according to the embodiments of the present application may further include a device for providing voice and/or data connectivity to a user, and specifically, include a device for providing voice to a user, or include a device for providing data connectivity to a user, or include a device for providing voice and data connectivity to a user. For example, may include a handheld device having wireless connection capability, or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchange voice or data with the RAN, or interact with the RAN. The terminal apparatus may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a user agent (user), or user equipment (user), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. Such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

The first to third terminal devices and the first target terminal device according to the embodiments of the present application may also be wearable apparatuses, by way of example and not limitation. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The terminal device may be a terminal device, or may also be a module for implementing a function of the terminal device, where the module may be disposed in the terminal device, or may also be disposed independently from the terminal device, and the module is, for example, a chip, a system-on-chip, or a system-on-chip.

The source terminal device refers to a terminal device having a requirement for uplink data transmission or sidestream data transmission, and the source terminal device needs a cooperative terminal device to complete transmission in a cooperative manner. The source terminal device transmits the data to be transmitted to other terminal devices in the user group, for example, the cooperative terminal device, and the cooperative terminal device completes the data transfer.

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

The destination terminal device is a terminal device to which the source terminal device finally transmits data or information via the cooperative terminal device in the user cooperation process, and is a destination to which the source terminal device intends to send data.

2) Network devices, including, for example, Access Network (AN) devices, such as network devices (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over the air, or, for example, a network device in vehicle-to-everything (V2X) technology is a Road Side Unit (RSU). The network device may be configured to interconvert the received air frame with an Internet Protocol (IP) packet, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolution type network device (NodeB or eNB or e-NodeB, evolution Node B) in a Long Term Evolution (LTE) system or an advanced long term evolution (LTE-a), or may also include a next generation Node B (gNB) in a New Radio (NR) system (also referred to as NR system) of a fifth generation mobile communication technology (5G), or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments of the present application.

3) Sidelink (sidelink) refers to a link between a terminal device and a terminal device. The uplink refers to a link in which the terminal device transmits information to the network device, and the downlink refers to a link in 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 may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

It should be understood that, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first terminal device and the second terminal device are not necessarily different in priority, importance, or the like of the two terminal devices, but are merely to distinguish the different terminal devices.

Fig. 2 is a flowchart of an embodiment of a method of untrusted communication according to an embodiment of the present application. Fig. 3 is a flow chart of another embodiment of a method of untrusted communication 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 obtains a transmission block of the first terminal device. In this embodiment, the first terminal device may send the transport block to the second terminal device in the communication cooperation group through the sidelink, for example, the first terminal device may send the first sidelink data to the second terminal device in a multicast mode. And the second terminal device receives an original bit TB1 obtained after successfully decoding the first side-line data sent by the first terminal device.

S202, the second terminal device transmits all or the first part of the transport block to the network device. In the embodiment of the present application, when the second terminal apparatus transmits all of the transport blocks to the network apparatus, the first terminal apparatus may transmit all of the transport blocks; alternatively, the first terminal device may transmit a second part of the transport block when the second terminal device transmits the first part of the transport block, wherein the first part and the second part are different parts of the transport 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 the transport block of the first terminal device. In this embodiment, the first terminal device may send the transport block to the second terminal device and the third terminal device in the communication cooperation group through the sidelink, for example, the first terminal device may send the first sidelink data to the second terminal device and the third terminal device in a multicast mode. And the second terminal device and the third terminal device receive an original bit TB1 which is sent by the first terminal device and obtained after the first side-line data is successfully decoded.

S202a, the second terminal device transmits all or the first part of the transport block to the network device. In the embodiment of the present application, when the second terminal apparatus transmits all of the transport blocks to the network apparatus, the third terminal apparatus may transmit all of the transport blocks; alternatively, a third terminal device may transmit a second part of the transport block while a second terminal device transmits a first part of the transport block, wherein the first part and the second part are different parts of the transport block.

The following describes in detail a wireless communication method according to an embodiment of the present application, taking an application scenario shown in fig. 1 (a) as an example.

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

S300 includes steps S300A through S300C.

S300A, the first terminal device transmits a scheduling request to the network device. When the first terminal device has an uplink data transmission requirement, the first terminal device sends a Scheduling Request (SR) to the network device, where the SR is used to notify the network device that the first terminal device has the data transmission requirement and needs to further configure transmission resources by the network device. 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 transmits the first downlink control information to the first terminal device. The network device sends first downlink control information to the first terminal device after receiving the scheduling request, the first downlink control information carries uplink scheduling information, the uplink scheduling information is used for indicating time-frequency resources used by the first terminal device for sending the buffer status report to the network device, and the first terminal device knows on what resources to send the buffer status report after receiving the uplink scheduling information.

S300C, the first terminal device sends a buffer status report to the network device. The first terminal device transmits a Buffer Status Report (BSR) to the network device according to the uplink scheduling information, and the network device receives the BSR 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: a scheduling request from a first terminal device, a buffer status report from the first terminal device, channel conditions of the first terminal device and a second terminal device, channel conditions of the first terminal device and a third terminal device, channel conditions of the first terminal device and a network device, channel conditions of the second terminal device and a network device, and channel conditions of the third terminal device and the network device.

For example, a first terminal device needs to transmit 1000 bits of data to a network device, the first terminal device sends a scheduling request to the network device and receives downlink control information sent by the network device, the first terminal device sends a buffer status report BSR to the network device according to uplink scheduling information in the downlink control information, and the network device knows the 1000 bits of data uploading requirement of the first terminal device after receiving the buffer status report of the first terminal device. The network device searches for an idle terminal device in the vicinity of the area where the first terminal device is located, measures the channel condition between each idle terminal device and the first terminal device and the channel condition between each idle terminal device and the network device, and determines that the second terminal device and the third terminal device can be used as cooperative terminal devices of the first terminal device, the channel condition between the second terminal device or the third terminal device and the first terminal device is good, the channel condition between the second terminal device or the third terminal device and the network device is good, and the network device has a data transmission basis. The second terminal device and the third terminal device may be cooperative terminal devices selected by the network device in a determined cooperation group, that is, the cooperation group already includes a plurality of terminal devices, and when the first terminal device has a data transmission demand, the network device determines which terminal devices (for example, the second terminal device and the third terminal device) from the plurality of terminal devices 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 terminal devices (e.g., the second terminal device and the third terminal device) may assist the first terminal device in transmitting information to the network device by, for example, measurement, and at this time, the network device determines that the first to third terminal devices belong to the same cooperative group. A cooperative group may also be called an assistance group. The network device determines the data size of the first side row data according to the buffer status report, the channel conditions, and the terminal device capabilities, and the data size is, for example, 100 bits, that is, the second terminal device and the third terminal device may together forward 100 bits of information to the network device for the first terminal device.

In the embodiment of the present application, step S300 is an optional step, and in other embodiments, there may be some or all of step S400, for example, before step S301, there may be step S400A and step S400B.

S301, the network device determines the second downlink control information. The second downlink control information is used for instructing the first terminal device to send the first sideline control information and the first sideline resource of the first sideline data to the second terminal device and the third terminal device.

S302, the network device sends the 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 for instructing the first terminal device to send a first sideline resource of first sideline information to the second terminal device and the third terminal device, and the first sideline information comprises first sideline control information and first sideline data.

In addition to the first sidelink resource, the second downlink control information may further contain or be used to indicate at least one of the following information: the method comprises the steps of obtaining an index ID of a target terminal group of sidelink transmission, a sidelink transmission Modulation and Coding Scheme (MCS) of first sidelink row data, a data amount of the first sidelink row data, new data indication information of the first sidelink row data, a hybrid automatic repeat request (HARQ) process number of the first sidelink row data, sidelink transmission power control information of the first sidelink row data, and a precoding matrix of the first sidelink row data.

The target subscriber group index transmitted by the sidelink is preconfigured by a high-level signaling or a protocol, and is used for the first terminal device to determine the index ID of the target terminal group for sidelink communication, for example, when the index ID of the target terminal group in the downlink control information is 3, this downlink control information is used for configuring a communication process with the second terminal and the third terminal device. The index ID may represent that this downlink control information is used for configuring a communication procedure with the fourth, fifth, sixth terminal device in addition to the second terminal device and the third terminal device.

The sidelink resources include at least sidelink control information transmission resources and sidelink data transmission resources, such as a Physical Sidelink Control Channel (PSCCH) for transmitting the sidelink control information and a physical sidelink shared channel (PSCCH) for transmitting the sidelink data, and are used for the first terminal device to communicate with a cooperating terminal device, such as the second terminal device and/or the third terminal device, on a specified resource.

S303, the first terminal device transmits the first sideline information to the second terminal device and the third terminal device. The first sideline information comprises first sideline control information and first sideline data, the second terminal device receives the first sideline control information and the first sideline data from the first terminal device, and the third terminal device receives the first sideline control information and the first sideline data from the first terminal device; the first sideline control information is used for indicating a first transmission resource for transmitting the first sideline data, and the first sideline resource comprises the first transmission resource. The original bit obtained by the second terminal device or the third terminal device after successfully decoding the first side line data is called transport block1 (TB 1).

S304, the second terminal device and the third terminal device transmit 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 for indicating whether the second terminal device successfully receives the first side row data; and the third terminal device sends second response information to the network device, and the network device receives the second response information from the third terminal device, wherein the second response information is used for indicating whether the third terminal device successfully receives the second downlink data.

Optionally, the second terminal device generates and sends to the network device a first acknowledgement message (ACK) after successfully receiving and decoding the first side data from the first terminal device, where the first acknowledgement message is used to inform the second terminal device of successfully receiving the first side data.

S305, the network device transmits downlink control information to the second terminal device and the third terminal device. The network device transmits the third downlink control information to the second terminal device, and the network device transmits the fourth downlink control information to the third terminal device. The third downlink control information is used for indicating the first uplink resource, and the fourth downlink control information is used for indicating 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 according to the first side row data, and the second uplink data is determined according to the first side row data.

The third downlink control information may include or be used to indicate at least one of the following information in addition to the first uplink resource: the method comprises the steps of uplink transmission MCS of first uplink data, the data volume of the first uplink data, the Redundancy Version (RV) of the first uplink data, a precoding matrix of the first uplink data, initialization information of a scrambling sequence, whether conversion precoding is carried out, time frequency resources and rate matching resources are carried out, and whether frequency domain frequency hopping configuration is carried out.

The fourth downlink control information may include or be used to indicate at least one of the following information in addition to the second uplink resource: the method comprises the steps of uplink transmission MCS of second uplink data, the data volume of the second uplink data, the RV version of the second uplink data, a precoding matrix of the second uplink data, initialization information of scrambling sequences, whether conversion precoding is carried out, time frequency resources, rate matching resources and whether frequency domain frequency hopping configuration is carried out.

After receiving the ACKs from the second terminal apparatus and the third terminal apparatus, the network apparatus configures the uplink data transmission resource for the second terminal apparatus, that is, the first uplink resource, configures the second uplink resource for the third terminal apparatus, and sends the uplink resource information to the second terminal apparatus through the third downlink control information and to the third terminal apparatus through the fourth downlink control information. And the second terminal device receives the third downlink control information and then determines first uplink resources, the second terminal device decodes the first side data and then encodes and modulates the first side data to generate first uplink data, and similarly, the third terminal device generates second uplink data according to the second side data and determines second uplink resources according to the fourth downlink control information.

S306, the second terminal device transmits the first uplink data, and the third terminal device transmits the second uplink data. The second terminal device transmits first uplink data to the network device on the first uplink resource according to the third downlink control information, and the third terminal device transmits 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, and transmits the first uplink data on a Physical Uplink Shared Channel (PUSCH). And the third terminal equipment processes the TB1 to generate second uplink data to be transmitted 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 terminal device to the network device under the instruction of the network device, so that cooperative transmission is implemented, and uplink transmission capability of the system is improved.

The above is a data transmission and signaling interaction flow of the wireless communication method according to the embodiment of the present application, and the method for generating the PUSCH when the second terminal apparatus and the third terminal apparatus assist the first terminal apparatus to transmit uplink data according to the embodiment of the present application is described in detail below with reference to fig. 5 to 13.

As an embodiment, in the process where the second terminal device assists the first terminal device in transmitting the transport block, both the second terminal device and the third terminal device transmit the entirety of TB 1. As shown in fig. 5 and 6, the second terminal apparatus or the third terminal apparatus transmits all of TB1 obtained from the first terminal apparatus mapped to the PUSCH to the reception end through steps S401 to S411.

The procedure for generating PUSCH from TB1 by the second terminal apparatus is described in detail below with reference to fig. 5 and 6. As shown in fig. 5 and fig. 6, the PUSCH generating procedure mainly includes: channel coding scheme, scrambling, modulation, layer mapping, transform precoding, resource mapping, generating Orthogonal Frequency Division Multiplexing (OFDM) symbols. Among them, converting the precoding is an optional step. When transform precoding is used, a discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) waveform is finally generated; when the transform precoding is not used, an OFDM waveform is finally generated.

Specifically, the channel coding scheme further includes generating a TB Cyclic Redundancy Code (CRC), Code Block (CB) segmentation, generating a CB CRC, channel coding, rate matching, code block concatenation, and the like.

S401, generating TB CRC. Illustratively, all bits contained in TB1 are denoted as a₀,a ₁,a ₂,…,a _A-1Generating a TB CRC, i.e., generating a cyclic redundancy code b for TB1₀,b ₁,b ₂,…,b _B-1And these bits are appended to TB1 and denoted as a₀,a ₁,a ₂,…,a _A-1b ₀,b ₁,b ₂,…,b _B-1. The receiving end may check for a CRC when decoding TB 1.

S402, code block segmentation. TB1 when CRC is attached (i.e. a)₀,a ₁,a ₂,…,a _A-1b ₀,b ₁,b ₂,…,b _B-1) When the number of bits contained is relatively large, channel codingThe complexity of the code is high and therefore it is necessary to divide this CRC-appended TB1 into multiple CBs. Assuming that the maximum number of bits that one CB can contain is L, when the number of bits contained in the CRC-attached TB1 is greater than L, it is necessary to divide the CRC-attached TB1 into a plurality of CBs, and each CB contains L bits. If the CRC-attached TB1 contains no integer multiple of the number of bits of L, the last CB may contain less bits than L. Therefore, the total can be divided into N ═ A + B)/L]CB; otherwise, the CRC-appended TB includes only one CB, i.e., N ═ 1, and the number of bits included in this CB is the number of bits included in this CRC-appended TB 1. Wherein the nth CB is marked as

Illustratively, as shown in fig. 5 and 6, CRC-attached TB1 is partitioned into 4 CBs: CB0, CB1, CB2 and CB 3.

S403, generating the CB CRC. Generating CB CRC, i.e. generating cyclic redundancy code for a CB

And appending these bits to the CB as

The end may use CRC to check when decoding the CB.

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

Each CB having CRC attached thereto is channel-coded

After channel coding, generating

The coded bits include original information bits and check bits before coding. Channel coding usually uses a fixed code rate, as shown in fig. 7, for example, the code rate of low-density parity-check (LDPC) code is 1/3, and if the number of original information bits before coding is x, the number of information bits after coding is 3x, where x original information bits and 2x check bits are included.

According to the specific channel condition of the terminal device, the network device configures 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, the secondary coded bits are required

Taking out the bit corresponding to the transmission code rate, called rate matching, and recording the bit after rate matching as

And sequentially placing the coded bits in the circular buffer, for a certain specific code rate, sequentially reading the coded bits from a certain initial position in the circular buffer, and if the tail part of the coded bits is not completely read, continuing reading from the head part of the coded bits, wherein the number of the read bits accords with the specific code rate. The RV version represents the starting position of the starting read bit in the circular buffer.

Alternatively, in the case where both the second terminal device and the third terminal device transmit all of TB1, the network device may configure the same RV version to the second terminal device and the third terminal device. Illustratively, as shown in fig. 7, the coded bits have 4 RV versions: RV0, RV1, RV2 and RV 3. The network device may configure the second and third terminal devices with the same RV version, e.g., the RV version configured for the second and third terminal devices is RV 1.

S405, code block concatenation. Specifically, each willThe rate-matched bits corresponding to the CBs are concatenated together according to the order of the CBs:

and denote it as h₀,h ₁,h ₂,…h _H-1。

And S406, scrambling. In order to prevent the terminal apparatuses between different cells from generating interference, it is necessary to scramble the bits encoded by each terminal apparatus so as to randomize the interference. Generating a random sequence k₀,k ₁,k ₂,…,k _K-1Each bit in this random sequence and each bit after coding are subjected to a modulo-2 operation, i.e. m_i＝(h _i+k _i) mod 2, noting the scrambled bits as m₀,m ₁,m ₂,…,m _H-1. Illustratively, the generated random sequence may be a Gold sequence with an initialization parameter c_init＝n _RNTI·2 ¹⁵+n _IDWherein n is_RNTIIs identified for the user, n_IDMay be configured by higher layers.

And S407, modulating. Modulation is the mapping of bits into complex symbols according to a certain rule. The modulation schemes that can be used are QPSK, 16QAM, 64QAM, 256QAM, and the like. Can record bit stream m₀,m ₁,m ₂,…,m _H-1After modulation, a complex symbol stream p is generated₀,p ₁,p ₂,…,p _P-1。

And S408, layer mapping. The layer mapping is to map a modulated complex symbol corresponding to one TB to different layers, and physical signals generated by complex signals corresponding to different layers can be transmitted through different antenna ports to perform space division multiplexing. For example, complex symbol p will be modulated₀,p ₁,p ₂,…,p _P-1Mapping to L layers, wherein the number of modulation symbols mapped by each layer is

The modulated complex symbol mapped on the L ∈ {0,1,2, …, L-1} layer is

And S409, precoding. In particular, the complex symbols transmitted on each antenna port may be determined by precoding.

Alternatively, before precoding, when the number of layer mapping is 1, transform precoding may also be performed. Transform precoding is to perform Discrete Fourier Transform (DFT) on the layer-mapped complex symbols, and to take the transform precoded complex symbols corresponding to the l-th layer as

If the complex symbols corresponding to each layer are not transform-precoded, it is also noted

Wherein

Then, a precoding operation is performed to determine the complex symbols transmitted on each antenna port. For example, the number of all available antenna ports is V, and the complex symbol transmitted on the vth antenna port is

And is provided with

The precoding process is as follows:

wherein the content of the first and second substances,

w is a precoding matrix with a matrix dimension of V × L.

Illustratively, two precoding methods, non-codebook-based transmission (non-codebook-based transmission) and codebook-based transmission (codebook-based transmission), may be employed.

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

For codebook-based transmission, W is not an identity matrix, and data transmitted on one antenna port may be a combination of data corresponding to different layers. According to different reported capabilities of the terminal devices, the types of codebooks that can be used by the terminal devices are classified into three types, full correlation (full coherence), partial correlation (partial coherence) and no correlation (no coherence). The correlation means that the terminal can better control the phase relationship between different antennas. If the data transmitted on one antenna port is a combination of data corresponding to different layers, it is necessary to ensure that there is correlation between different antennas. The terminal devices may have different capabilities, for example, different maximum number of antenna ports that can be supported, different maximum ranks or maximum number of layers, and different sets of pre-coding codebooks that are supported.

For example, three types of codebook sets are supported in NR: fullAndParalAndNanCoherent, paratialAndNanCoherent and nonCoherent, and the three codebook types have the following inclusion relationsComprises the following steps: the uncorrelated set of codebooks is contained in the partially correlated set of codebooks and in the fully correlated set of codebooks, i.e.

Fig. 8 is a schematic diagram of precoding matrices of three types of codebooks and antenna selection modes of corresponding codebooks. Illustratively, the terminal device has 4 antennas: antenna 1, antenna 2, antenna 3, and antenna 4, the number of layers mapped is 1, and 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) of fig. 8, the complex symbol mapped to each layer can only select one antenna for transmission, for example, antenna 2. For an uncorrelated codebook set, for each layer of complex symbols, one of 4 antennas can be selected for transmission, and thus 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 second element in the 4 × 1 matrix corresponding to antenna 2 is not 0, and the other elements are all 0.

When the codebook type corresponding to the precoding matrix is partially correlated, as shown in (b) of fig. 8, the 4 antennas are divided into two groups, and the complex symbols of each layer can be transmitted through one of the two groups of antennas, that is, the complex symbols of each layer can be allocated to two antennas in one antenna group for transmission. For example, antennas 1 and 3 are a first antenna group and antennas 2 and 4 are a second antenna group. When a first antenna group is selected, complex symbols of each layer are distributed to an antenna 1 and an 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. Wherein the transmit 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 an uncorrelated codebook set, and for the complex symbols of each layer, after a certain antenna group is selected, the complex symbols of the layer can be all allocated to one of the antennas in the antenna group. For example, when a first antenna group is selected for transmission, the complex symbols of the layer may all be assigned to the antennas 1 in the first antenna group, or the complex symbols of the layer may all be assigned to the antennas 3 in the first antenna group.

When the codebook type corresponding to the precoding matrix is fully correlated, as shown in (c) of fig. 8, 4 transmit antennas may be arbitrarily combined, that is, for the complex symbol of each layer, 4 antennas may be allocated to transmit, and the 4 transmit 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, and for the complex symbol of each layer, the complex symbol of the layer may be allocated to a certain antenna group of 4 antennas for transmission, and may also be allocated to a certain antenna of 4 antennas for transmission.

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

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

In such an implementation, the capabilities of the second terminal device and the third terminal device may be different, for example, the maximum number of antenna ports that the second terminal device and the third terminal device can support is different, the maximum rank or the maximum number of layers supported is different, and 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 precoding matrix types supported by all terminal devices.

Illustratively, if the precoded codebook set that all terminal devices support is fullAnd partial AnnConnect, then the precoded codebook set that the network device can configure is fullAnd partial AnnConnect.

Illustratively, if the codebook set of the precoding supported by all the terminal devices is fullalandpartialandnconcode or partialandnconcode, the codebook set of the precoding that the network device can configure is partialandnconcode.

Illustratively, if the codebook set of the precoding supported by all terminal devices is fullalandpartialandncouherent or partialandncouherent or uncorrelated (nocouherent), then the codebook set of the precoding that the network device can configure is nocouherent.

By the configuration mode, the bit number of the configuration signaling can be saved.

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

Alternatively, the network device may configure the second terminal device and the third terminal device with different precoding matrices.

In such a configuration, 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 types of precoding codebooks supported are different. Because the two terminal devices transmit the same data in the same time-frequency resource, the number of antenna ports corresponding to the precoding matrix configured for each terminal device by the network device should not be greater than the minimum number of antenna ports supported by all user equipments. 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 layers corresponding thereto 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 apparatus may be configured through Downlink Control Information (DCI) signaling, may be configured through Radio Resource Control (RRC) signaling, and may be selected through a plurality of alternative sets configured through RRC signaling and DCI signaling.

As shown in fig. 6, the second terminal device supports 2 ports, and the third terminal device supports 4 ports. The network device thus configures the second terminal device with a precoding matrix 0 and the third terminal device with a precoding matrix 1 so that the second terminal device can transmit data through 2 ports and the third terminal device can transmit data through 4 ports. The third terminal device can improve the performance of antenna selection, beam forming and the like through 4 ports.

By this configuration, the transmission capability of each terminal device can be utilized to the maximum.

And S410 to S411, mapping resources and generating OFDM symbols. Complex symbol stream corresponding to one antenna port

It is mapped on the frequency domain resources allocated by the network device and then OFDM symbol transmission is generated.

The above-described steps S401 to S411 describe in detail the procedure of generating the PUSCH from the TB1 when the second terminal apparatus transmits the entirety of the TB1, and the network apparatus configures the same RV version to the second terminal apparatus and the third terminal apparatus. In the process of generating the PUSCH by the terminal apparatus, the network apparatus may configure the terminal apparatus. When the second terminal device transmits all of TB1 and the network device configures the same RV version to the second terminal device and the third terminal device, the network device may perform the same configuration to each terminal device. Illustratively, each terminal device may be configured with the same MCS, RV version, initialization information of scrambling sequence, whether to perform transform precoding, time-frequency resources, rate matching resources, whether to perform frequency-domain hopping configuration, or not. If one terminal device does not support frequency domain frequency hopping, the network device does not set frequency domain frequency hopping to the terminal device.

In addition, in the process of mapping the transport block to the PUSCH, a demodulation reference signal (DMRS) needs to be generated for demodulation of the PUSCH channel.

Fig. 9 is a generation procedure of DMRS. As shown in fig. 9, the DMRS generation procedure includes steps S701 to S704.

And S701, generating DMRS sequences for different layers. The terminal apparatus generates a DMRS sequence for each layer when the terminal apparatus performs layer mapping in step S408 for generating a PUSCH, according to the configuration information of the network apparatus. The DMRS configuration information given to the terminal device by the network device may include a DMRS port, the number of pre-load symbols, the number and location of additional DMRSs, and the like.

S702 to S704, the DMRS sequence of the corresponding layer is combined with the complex symbol of each layer in step S408 in the PUSCH generating procedure, and then the steps described in S409 to S411 in the PUSCH generating procedure are performed.

When each terminal device transmits all of TB1 and the network device configures the same RV version to each terminal device, the network device may also configure the same DMRS configuration information to each terminal device.

In the above embodiment, both the second terminal apparatus and the third terminal apparatus transmit the same TB1, and the network apparatus performs combining decoding on the signals transmitted by the second terminal apparatus and the third terminal apparatus, thereby improving the received power and diversity gain of the network apparatus.

Alternatively, in the case where both the second terminal device and the third terminal device transmit all of TB1, the network device may also configure the second terminal device and the third terminal device with different RV versions. Illustratively, a network device may configure RV0 for a second terminal device and RV1 for a third terminal device.

When the second terminal device and the third terminal device both transmit all of TB1 and the network device configures different RV versions to the second terminal device and the third terminal device, the method of mapping from TB1 to PUSCH coincides with steps S401 to S411 and is not described in detail here.

In the process of generating the PUSCH by the terminal apparatus, the network apparatus may configure the terminal apparatus. The network device may perform the same MCS, initialization information of scrambling sequences, whether to perform transform precoding, time-frequency resources, rate matching resources, and whether to perform frequency domain hopping configuration for each terminal device. If one user equipment does not support frequency domain frequency hopping, the base station does not set frequency domain frequency hopping for the user equipment. The network device may configure different RV versions for each terminal device.

In addition, in the process of mapping the transport block to the PUSCH, DMRSs need to be generated for demodulation of the PUSCH channel.

When the second terminal device and the third terminal device both transmit all of TB1 and the network device configures different RV versions for the second terminal device and the third terminal device, the DMRS generation process is as described in steps S701 to S704, and details are not described again to avoid repetition.

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

As an example, a second terminal device in the communication cooperation group may transmit the first part of transport block TB1 and a third terminal device may transmit the second part of transport block TB 1. 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.

Alternatively, the second terminal device may send a sub transport block of TB 1. Fig. 10 is a flowchart of the second terminal device transmitting a sub transport block of TB 1. As shown in fig. 10, the second terminal apparatus or the third terminal apparatus has transmitted the sub transport block of TB1 through steps S801 to S812.

And S801, TB blocking. In the embodiment of the present application, the second terminal apparatus in the communication cooperation group transmits a sub transport block of TB1, which is a bit stream formed of a plurality of consecutive bits of TB 1. For example, TB1 is partitioned into two sub transport blocks, sub transport block 0 and sub transport block 1. As shown in step S401, all bits contained in TB1 are denoted as a₀,a ₁,a ₂,…,a _A-1The sub-transport block 0 contains a bit of a₀,a ₁,a ₂,…,a _iThe sub-transport block 0 is allocated to the second terminal device for transmission, and the sub-transport block1 includes a bit a_i+1,a _i+2,…,a _A-1The sub-transport block1 is allocated to the third terminal device for transmission. It should be understood that the sub transport block 0 and the sub transport block1 are only for distinguishing two different sub transport blocks, and do not represent priorities of the two sub transport blocks, etc. It should be further understood that only two terminal devices in the communication cooperation group are taken as an example in fig. 10, in an actual application, there may be other number of terminal devices in the communication cooperation group, TB1 may also be divided into other number of sub transport blocks, which is not limited in this embodiment of the present application.

S802 to S812, the second terminal apparatus maps the allocated sub-transport block 0 to the PUSCH and transmits the mapped sub-transport block; the third terminal device maps the allocated sub-transport block1 to the PUSCH and transmits the mapped sub-transport block. The method for mapping the transport block to the PUSCH in steps S802 to S812 is the same as that in steps S401 to S411, and is not described in detail again to avoid repetition.

Multiplexing gain can be obtained at the receiving end by dividing a transport block into a plurality of sub-transport blocks for transmission by different terminal apparatuses. In addition, in the transmission process, if a certain sub-transport block has a transmission error, other sub-transport blocks can determine whether the transmission is correct through the CRC of the other sub-transport blocks, so that the receiving end only needs to process the sub-transport block with the transmission error.

Alternatively, the second terminal apparatus may transmit a part of the bitstream to which the CRC is attached by TB 1. Fig. 11 is a flowchart of a part of a bit stream to which a CRC is attached by the second terminal apparatus transmitting TB 1. As shown in fig. 11, the second terminal apparatus or the third terminal apparatus transmits a part of the bitstream to which the CRC is added by TB1 in steps S901 to S912.

S901, TB CRC is generated, and in step S901, as stated in step S401, after TB1 generates CRC, it is marked as a₀,a ₁,a ₂,…,a _A-1b ₀,b ₁,b ₂,…,b _B-1。

And S902, partitioning. For the TB1 to which the CRC is added, the second terminal apparatus transmits a bit stream formed of a plurality of consecutive bits of the TB1 to which the CRC is added. For example, as shown in FIG. 11, CRC-appended TB1 is split into two parts, the first part containing a bit stream that may be a₀,a ₁,a ₂,…,a _iAllocating the first part to the second terminal device for transmission; the second part may comprise a bit stream which may be a_i+1,a _i+2,…,a _A-1b ₀,b ₁,b ₂,…,b _B-1The second portion is assigned to a third terminal device for transmission.

S903 to S912, the second terminal apparatus maps the allocated bit stream of the first part to the PUSCH and transmits the mapped bit stream; the third terminal device maps the allocated bit stream of the second part to the PUSCH and transmits the mapped bit stream. The method of mapping the bit stream of the transport block to the PUSCH in steps S903 to S912 is the same as that in steps S401 to S411, and is not described in detail to avoid repetition.

Multiplexing gain can be obtained at the receiving end by dividing TB1 to which CRC is added into a plurality of parts for transmission by different terminal devices. In addition, the receiving end can demodulate and decode according to a transmission block of a virtual user, and for the higher layer protocol, the processing flow of the receiving end to the transmission block is equivalent to that the first terminal device directly and transparently transmits a transmission block to the receiving end, so that the additional higher layer protocol flow is avoided.

Alternatively, the second terminal apparatus may transmit a part of the code blocks corresponding to TB 1. Fig. 12 is a flowchart of the second terminal device transmitting part of the CB corresponding to TB 1. As shown in fig. 12, the second terminal device or the third terminal device transmits the part CB of the CB corresponding to TB1 through steps S1001 to S1011.

S1001 to S1002, as described in the above steps S401 to S402, the CRC-attached TB1 can be divided into N CBs, which are marked as {1,2, …, N-1 }. For example, when N is 4, TB1 is divided into CB0, CB1, CB2, and CB3 after CRC is added.

S1003, generates a CB CRC. The second terminal device is assigned to a plurality of continuous CBs_i,CB _i+1,…CB _i+I-1}. For example, as shown in fig. 12, CB0 and CB1 are assigned to a second terminal device, CB2 and CB3 are assigned to a third terminal device, and the second terminal device attaches CRC to CB0 and CB1, respectively; the third terminal apparatus adds CRC to CB2 and CB3, respectively.

S1004 to S1011, the second terminal apparatus maps the allocated CB0 and CB1 to the PUSCH and transmits them, and the third terminal apparatus maps CB2 and CB3 to the PUSCH and transmits them. The method for mapping the transport block to the PUSCH in steps S1004 to S1011 is the same as that in steps S404 to S411, and is not described in detail.

Multiplexing gain can be obtained at the receiving end by dividing TB1 to which CRC is added into a plurality of parts for transmission by different terminal devices. In addition, in this implementation, the bit stream of the transport block has been divided into a plurality of code blocks in advance, and the network device requires a smaller number of bits when indicating the allocated code blocks to each terminal device, saving signaling bits.

In the procedure of generating the PUSCH by the terminal apparatus shown in fig. 10 to 12, the network apparatus can configure each terminal apparatus independently. The network device can perform independent MCS, RV version, initialization information of scrambling sequence, whether to perform transform precoding, time frequency resource, rate matching resource, and whether to perform frequency domain frequency hopping configuration for each terminal device. And if one user equipment does not support frequency domain frequency hopping, the base station does not set the frequency domain frequency hopping for the user equipment.

For the initialization information of the scrambling sequence, the network device may perform independent configuration of the initialization information of the scrambling sequence for each terminal device, or the network device may perform the same configuration of the initialization information of the scrambling sequence for each terminal device.

For example, when the network device performs independent scrambling sequence initialization information configuration on each terminal device, the initialization of the scrambling sequence may be associated with a user coordination-radio network temporary identity (user coordination-radio network temporary identity)identifier, UC-RNTI), c_init＝f(UC-RNTI,n _ID). The network device may configure the same UC-RNTI for each terminal device, or may configure an independent n for each terminal device_ID。

Illustratively, when the network device performs the same scrambling sequence initialization information configuration for each terminal device, the same UC-RNTI and n are configured for each terminal device_ID。

When the second terminal device and the third terminal device respectively transmit different parts of TB1, the DMRS generation process is as described in steps S701 to S704, and details are not described again to avoid repetition. The network device may perform independent DMRS information configuration for each terminal device.

As an example, the second terminal device may transmit a partially continuous complex symbol of the complex symbol modulated by TB 1.

As described in step S407, TB1 has P complex symbols P after modulation₀,p ₁,p ₂,…,p _P-1In the process of assisting the first terminal device to forward the transmission block, the total U terminal devices participate in cooperative forwarding, and the number of layers that can be sent by the channel of each terminal device is { L }₀,L ₁,L ₂,…,L _U-1}; then the ith terminal device is assigned a complex number of symbols of

A stream of complex symbols of

Wherein the content of the first and second substances,

after each terminal apparatus is assigned with a plurality of consecutive complex symbols, each terminal apparatus performs operations such as independent layer mapping and precoding on the assigned complex symbols.

Fig. 13 is a flowchart of transmitting a partially continuous complex symbol of complex symbols modulated by TB1 by the second terminal device. As shown in fig. 13, the second terminal device or the third terminal device transmits partially continuous complex symbols of the complex symbols modulated by TB1 in steps S1101 to S1112.

S1101 to S1107, as described in steps S401 to S407 above, the second terminal device or the third terminal device maps TB1 to complex symbol stream p₀,p ₁,p ₂,…,p _P-1。

S1108, complex symbol allocation. The network device distributes a part of continuous complex symbols for the second terminal device according to the transmission capability of the second terminal device. For example, if the number of layers supported by the second terminal device is 3 and the number of layers supported by the third terminal device is 1, the network device allocates complex symbols corresponding to the 3 layers to the second terminal device and allocates complex symbols corresponding to the 1 layer to the third terminal device.

In S1109 to S1112, the second terminal apparatus or the third terminal apparatus performs operations such as independent layer mapping and precoding on the allocated complex symbols, and then maps the allocated complex symbols to the PUSCH to transmit the symbols. The method for mapping the complex symbol to the PUSCH in steps S1109 to S1112 is the same as that in steps S408 to S411, and is not described in detail.

In the process of generating the PUSCH, the network device may perform the same MCS, RV version, rate matching resource, scrambling information, time-frequency resource, whether to perform transform precoding, and perform the same configuration for each terminal device, and may perform independent configuration for precoding and DMRS of each terminal device. Wherein, for the scrambling initialization information, the same UC-RNTI and n can be configured for each terminal device_ID。

In this implementation, the receiving end can demodulate and decode signals sent by different user equipments as data of one virtual user, thereby improving the uplink transmission capability. In addition, a plurality of user equipment which are cooperatively forwarded have more same configurations, so that configuration signaling bits are saved.

In the foregoing embodiment, with reference to fig. 4 to fig. 13, the cooperative communication method according to the embodiment of the present application is described in detail by taking the application scenario shown in (a) in fig. 1 as an example. It should be understood that the cooperative communication method according to the embodiment of the present application may also be applied to the application scenarios shown in other schematic diagrams in fig. 1, and the present application does not limit this. In addition, the embodiment of the present application may be applied to a scenario in which only the first terminal apparatus and the second terminal apparatus are in the communication cooperation group. When only the first terminal device and the second terminal device are in the communication cooperation group, the communication method of the first terminal device in the second-stage transmission is the same as that of the third terminal device in the above-described embodiment, and detailed description thereof is omitted.

The method of wireless communication according to the embodiment of the present application is described in detail above with reference to fig. 1 to 13, and the apparatus of wireless communication according to the embodiment of the present application is described in detail below with reference to fig. 14 to 18.

Fig. 14 is a schematic structural diagram of a wireless communication apparatus 1200 according to an embodiment of the present application. The wireless communication apparatus belongs to a second terminal apparatus in the communication cooperation group. As shown in fig. 14, the wireless communication apparatus 1200 includes an obtaining module 1210 and a transmitting module 1220.

An obtaining module 1210 is configured to obtain all the transport blocks of the first terminal apparatus in the communication cooperation group.

A sending module 1220, configured to send all or a first portion of the transport block to a network device; wherein, when the second terminal device transmits all of the transport blocks to the network device, the first terminal device or the third terminal device transmits all of the transport blocks to the network device; alternatively, when the second terminal device transmits a first part of the transport block to the network device, the first terminal device or a third terminal device transmits a second part of the transport block to the network device, wherein the first part and the second part are different parts of the transport block, and the third terminal device is in the communication cooperation group.

As an embodiment, in assisting the first terminal device to transmit the transport block, the first terminal device or the third terminal device transmits all of the transport blocks, and the RV version of the transport block transmitted by the first terminal device or the third terminal device is the same as or different from the RV version of the transport block transmitted by the second terminal device.

Illustratively, the precoding of the transport blocks sent by the second terminal device and the third terminal device is the same, the number of antenna ports 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 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 intersection of the precoding matrix types supported by the second terminal device and the third terminal device.

Illustratively, the precoding of the transport blocks sent by the second terminal device and the third terminal device are different, 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, and 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, a sub-transport block being a plurality of consecutive bits in the transport block; or the first part and the second part are different parts of the bit stream after the CRC is attached to the transmission block; or the first portion and the second portion are different code blocks of a plurality of code blocks corresponding to the transport block; or the first part and the second part are different symbols of the plurality of symbols after transmission block modulation.

According to the wireless communication device, the terminal devices in the communication cooperation group assist the first terminal device to send the transmission block, and the first terminal device can utilize the transmission capability of the idle user to enable the terminal devices in the communication cooperation group to carry out effective cooperative transmission, so that the uplink transmission capability is improved.

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, the second terminal device, the third terminal device, or the first target terminal device of the embodiments of the present application. The wireless communication apparatus includes a transceiving unit 1310 and a processing unit 1320.

The transceiving unit 1310 is used for receiving or transmitting control information and transport blocks.

The processing unit 1320 is configured 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 a user equipment, the transceiving unit 1310 may be a transmitting unit or a transmitter when transmitting information, the transceiving unit 1310 may be a receiving unit or a receiver when receiving information, the transceiving unit may be a transceiver, and the transceiver, the transmitter, or the receiver may be a radio frequency circuit, and when the first, second, third terminal device or the first target terminal device includes a storage unit, the storage unit is configured to store computer instructions, the processor is communicatively connected to the memory, and the processor executes the computer instructions stored in the memory, so that the first terminal device, the second terminal device, the third terminal device and the first target terminal device execute the methods according to the embodiments shown in fig. 2 to 13. 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 or a circuit, etc. The processing unit may execute the computer executable instructions stored by the storage unit to cause the chip within the first terminal device, the second terminal device, the third terminal device or the first target terminal device to perform the methods of fig. 2-13. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a Read Only Memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

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

A receiving module 1410, 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 the transport blocks 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.

In one embodiment, the first terminal device or the third terminal device transmits all of the transport blocks, and the RV version of the transport block transmitted by the first terminal device or the third terminal device is the same as or different from the RV version of the transport block transmitted by the second terminal device.

Illustratively, the precoding of the transport blocks transmitted by the second terminal device and the third terminal device is the same, the number of antenna ports 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 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 intersection of the types of precoding matrices supported by the second terminal device and the third terminal device.

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

A receiving module 1510, configured to receive a first part of a transport block of a first terminal device sent by a second terminal device; the receiving module is further configured to receive a second part of the transport block sent by the first terminal device or a 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 transport block.

The wireless communication apparatus 1400 and the wireless communication apparatus 1500 of the embodiments of the present application may correspond to network apparatuses in the methods of the embodiments 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 of the embodiment of the present application. The wireless communication apparatus includes a transceiving unit 1610 and a processing unit 1620.

The transceiver 1610 is configured to receive a scheduling request from a terminal apparatus, receive uplink data from the terminal apparatus, and transmit downlink control information.

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

When the network device is a network device, the transceiver 1610 may be a transmitter or a transmitter when transmitting information, the transceiver 1610 may be a receiver or a transceiver when receiving information, the transceiver may be a transceiver, and the transceiver, the transmitter or the 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 connected to the memory in a communication manner, and the processor executes the computer instructions stored in the memory, so that the network device executes the method according to the embodiments shown in fig. 2 to 13. 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 transceiving unit 1610 can be an input and/or output interface, a pin or a circuit, etc. The processing unit may execute computer-executable instructions stored by the storage unit to cause a chip within the network device to perform the methods described in fig. 2-14. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a Read Only Memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

The present embodiments also provide a computer-readable medium storing a computer program (also referred to as code, or instructions) which, when run on a computer, causes the computer to perform the method in any of the above-described method embodiments.

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

The system-on-chip may include, among other things, input circuitry or interfaces for transmitting information or data, and output circuitry or interfaces for receiving information or data.

An embodiment of the present application further provides a communication system, including: a communications device for performing the method of any of the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a storage medium or transmitted from one storage medium to another storage medium, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the steps of the embodiments have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it is understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

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

the second terminal device transmitting all or a first portion of the transport block to a network device;

wherein, when the second terminal device transmits all of the transport blocks to the network device, the first terminal device or a third terminal device transmits all of the transport blocks to the network device; alternatively, when the second terminal device transmits a first part of the transport block to the network device, the first terminal device or the third terminal device transmits a second part of the transport block to the network device, wherein the first part and the second part are different parts of the transport block, wherein 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 transport blocks, and wherein the RV version of the transport blocks transmitted by the first terminal device or the third terminal device is the same as or different from the RV version of the transport blocks transmitted by the second terminal device.
The method according to claim 1 or 2, wherein the first or third terminal device transmits all of the transport blocks, and wherein the precoding of the transport blocks transmitted by the first or second terminal device is the same or different from the precoding of the transport blocks transmitted by the second terminal device.
The method according to claim 3, wherein the precoding of the transport blocks sent by the second terminal device and the third terminal device is the same, the number of antenna ports 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 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 intersection of the precoding matrix types supported by the second terminal device and the third terminal device.
The method according to claim 3, wherein the precoding of the transport blocks sent by the second terminal device and the third terminal device are different, 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, and the number of layers corresponding to different precoding matrices is the same and not greater than the minimum number of layers supported by the second terminal device and the third terminal device.
The method of claim 1, wherein the first portion and the second portion are different sub-transport blocks of the transport block, the sub-transport blocks being a plurality of consecutive bits in the transport block; or the like, or, alternatively,

the first part and the second part are different parts of the bitstream after cyclic redundancy code, CRC, is appended to the transport block; or the like, or a combination thereof,

the first portion and the second portion are different code blocks of a plurality of code blocks to which the transport block corresponds; or the like, or a combination thereof,

the first portion and the second portion are different symbols of the plurality of symbols after modulation by the transport block.
A method of wireless communication, comprising:

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

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

an obtaining module, configured to obtain all transport blocks of a first terminal device in the communication cooperation group;

a sending module, configured to send all or a first portion of the transport block to a network device;

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

the first part and the second part are different parts of the bit stream after Cyclic Redundancy Code (CRC) is attached to the transmission block; or the like, or, alternatively,

the first portion and the second portion are different code blocks of a plurality of code blocks to which the transport block corresponds; or the like, or, alternatively,

the first portion and the second portion are different symbols of the plurality of symbols after modulation by the transport block.
A wireless communications apparatus, wherein the wireless communications apparatus belongs to a network apparatus, the wireless communications apparatus comprising:

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

the receiving module is further configured to receive all the transport blocks sent by the first terminal device or a third terminal device, where the first terminal device, the second terminal device, and the third terminal device belong to a same communication cooperation group.
The apparatus of claim 18, wherein the first terminal apparatus or the third terminal apparatus transmits all of the transport blocks, and wherein the RV version of the transport blocks transmitted by the first terminal apparatus or the third terminal apparatus is the same as or different from the RV version of the transport blocks transmitted by the second terminal apparatus.
The apparatus according to claim 18 or 19, wherein the first or third terminal apparatus transmits all of the transport blocks, and wherein the precoding of the transport blocks transmitted by the first or third terminal apparatus is the same as or different from the precoding of the transport blocks transmitted by the second terminal apparatus.
The apparatus of claim 20, wherein the precoding of the transport blocks sent by the second terminal apparatus and the third terminal apparatus is the same, the number of antenna ports corresponding to the same precoding matrix is not greater than the minimum number of antenna ports supported by the second terminal apparatus and the third terminal apparatus, the number of layers corresponding to the same precoding matrix is not greater than the minimum number of layers supported by the second terminal apparatus and the third terminal apparatus, and the type of the same precoding matrix is an intersection of precoding matrix types supported by the second terminal apparatus and the third terminal apparatus.
The apparatus according to claim 20, wherein the precoding of the transport blocks sent by the second terminal apparatus and the third terminal apparatus are different, 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 apparatus and the third terminal apparatus, and 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 apparatus and the third terminal apparatus.