WO2024093869A1

WO2024093869A1 - Communication method and communication apparatus

Info

Publication number: WO2024093869A1
Application number: PCT/CN2023/127555
Authority: WO
Inventors: 杨培; 陈雷; 樊波; 李铁; 余政
Original assignee: 华为技术有限公司
Priority date: 2022-11-04
Filing date: 2023-10-30
Publication date: 2024-05-10
Also published as: CN117997393A

Abstract

The present application provides a communication method and a communication apparatus. The communication method comprises: receiving first information; determining N modes from M modes according to the first information, wherein N is an integer greater than 0, M is an integer greater than or equal to N, and the M modes comprise one or more of a first mode, a second mode, a third mode, and a fourth mode; and sending a transport block according to one of the N modes. A transmission mode associated with pre-coding information and the number of layers or a channel sounding reference signal resource indication on a terminal device is accurately indicated by means of the first information, thereby solving the problem of the indication of a transmission mode associated with pre-coding information and the number of layers or a channel sounding reference signal resource indication on a terminal device, without increasing the bit overhead.

Description

A communication method and a communication device

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on November 4, 2022, with application number 202211389658.7 and invention name “A communication method and communication device”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of communication technology, and in particular to a data transmission method and a communication device.

Background technique

The long term evolution (LTE) system uses low frequency bands for communication, while the new radio (NR) system of the fifth generation mobile communication technology (5G) uses high frequency bands (for example, above 6G systems) for communication, such as 26 GHz, 28 GHz, 39 GHz or 60 GHz bands. High frequency bands can achieve larger bandwidth and higher transmission rate. Due to the high frequency, the signal will experience severe attenuation during spatial propagation, resulting in severe limitation of signal coverage. Therefore, the NR system uses beamforming (BF) technology to obtain good directional gain, so as to increase the directional power in the transmission direction, improve the received signal to interference plus noise radio (SINR), and thus improve the system performance.

In the NR research process, considering the trade-off between cost and performance, the hybrid beamforming (HBF) technology, which includes digital beamforming and analog beamforming, was finally adopted. In the implementation of beamforming technology, the antenna panel is the core component, and the beam is sent or received through the antenna panel.

At present, the discussion on antenna panels is based on the uplink transmission process of fast selection and switching of multiple antenna panels. The definition of antenna panels and how they are reflected in the protocol are discussed in detail, but the issue of antenna panels on terminal devices sending transmission blocks at the same time is not involved.

Summary of the invention

The present application provides a communication method and apparatus that can effectively solve the problem of indicating the transmission mode of a terminal device in a multi-antenna panel scenario.

In a first aspect, a communication method is provided. The communication method may be executed by a terminal device, or may be executed by a chip or circuit disposed in the terminal device, and the present application does not limit this.

receiving a first message;

Determine N modes from M modes according to the first information, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of the first mode, the second mode, the third mode, and the fourth mode; n is greater than or equal to 1,

The first mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with different parts of the one transport block;

The second mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with the same part of the one transport block;

The third mode is to send a transport block according to a precoding information and a layer number, or a channel sounding reference signal resource indication;

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication;

The transport block is sent according to one of the N patterns.

In the above scheme, in the present application, in the scenario of multiple antenna panels, the terminal device receives the first information to indicate the transmission mode of at least one precoding information and the number of layers, or at least one channel detection reference signal resource indication on the terminal device, that is, the first information can indicate one or two modes of the first mode, the second mode, the third mode, or the fourth mode. The present application can also be applied to the scenario of multiple transmission receiving points. When the terminal device sends a transmission block to one or more transmission receiving points through multiple precoding information and the number of layers, or multiple channel detection reference signal resource indications, the first information indicates the transmission mode associated with the precoding information and the number of layers, or the channel detection reference signal resource indication on the terminal device.

In a possible implementation, M=4, and determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, the first information indicates the third mode, and the third mode is associated with A precoding information and a number of layers is one of the at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode is one of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or

When the value of the first information is the fourth value, N=1, and the first information indicates the fourth mode.

In the above scheme, in the present application, the terminal device can indicate the first mode and the second mode through the first value of the first information, indicate the third mode through the second value and the third value of the first information respectively, and indicate the fourth mode through the fourth value of the first information respectively. In addition, through different values of the first information, dynamic switching between the first mode and the second mode and the third mode and the fourth mode can be achieved, thereby reducing network latency.

In a possible implementation, M=3, and determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is the second value, N=1, and the first information indicates the fourth mode.

In the above scheme, in the present application, the terminal device can indicate the first mode and the second mode through the first value of the first information, and indicate the fourth mode through the second value of the first information. In addition, through different values of the first information, dynamic switching between the first mode, the second mode and the fourth mode can be achieved, thereby reducing network latency.

In a possible implementation, the method further includes:

receiving second information, the second information being used to indicate one mode among the N modes, and

The sending of the transport block according to one of the N modes comprises:

The transport block is sent according to the one mode indicated by the second information.

In the above scheme, when the first information indicates the first mode and the second mode, the second information can be used to enable the terminal device to determine a specific mode from the two modes, thereby accurately indicating the transmission modes of multiple antenna panels on the terminal device. In addition, when the second information is at least 1 bit in the downlink control information DCI, dynamic switching between the first mode and the second mode can be achieved, thereby reducing network latency.

In a possible implementation manner, when the value of the second information is the fifth value, the second information indicates the first mode; or,

When the value of the second information is a sixth value, the second information indicates the second mode.

In a possible implementation, M=3, N=1, and determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is the second value, the first information indicates the third mode, and one precoding information and one number of layers associated with the third mode are one of at least two precoding information and one number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is the third value, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a fourth value, the first information indicates the second mode.

In the above scheme, in the present application, the terminal device can indicate the first mode through the first value of the first information, indicate the third mode through the second value and the third value of the first information respectively, and indicate the second mode through the fourth value of the first information respectively. In addition, through different values of the first information, dynamic switching between the first mode, the second mode and the third mode can be achieved, thereby reducing network latency.

In a possible implementation, M=3, N=1, and determining N modes from M modes according to the first information. formula, including:

When the value of the first information is a second value, the first information indicates the fourth mode;

When the value of the first information is a third value, the first information indicates the second mode.

In the above scheme, in the present application, the terminal device can indicate the first mode through the first value of the first information, indicate the fourth mode through the second value of the first information, and indicate the second mode through the third value of the first information. In addition, through different values of the first information, dynamic switching between the first mode, the second mode and the fourth mode can be achieved, thereby reducing network latency.

In one possible implementation, the first information is at least 2 bits in the radio resource control RRC, the media access control control element MAC CE, or the downlink control information DCI.

In the above scheme, when the second information is 2 bits in RRC, MAC CE, or DCI, the transmission mode of multiple antenna panels on the terminal device side can be indicated without increasing the bit overhead.

In one possible implementation, the first information is 1 bit in RRC, MAC CE, or DCI.

In the above scheme, one or two modes of multiple transmission modes are indicated by introducing 1 bit in RRC, MAC CE, or DCI. When the 1 bit in RRC, MAC CE, or DCI indicates two transmission modes, the configured 2 bits in DCI can be used to indicate one of the two modes, thereby reducing the impact of standardization.

In a possible implementation, M=5, and the M modes further include: a fifth mode;

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications;

The determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is a second value, the first information indicates the fifth mode;

or,

When the value of the first information is a first value, N=1, and the first information indicates the first mode; when the value of the first information is a second value, the first information indicates the fifth mode.

In the above scheme, in the present application, the terminal device can indicate the first mode and the second mode through the first value of the first information, and indicate the fifth mode through the second value of the first information. Alternatively, in the present application, the terminal device can indicate the first mode through the first value of the first information, and indicate the fifth mode through the second value of the first information. In addition, through different values of the first information, dynamic switching between the first mode, the second mode and the fourth mode can be achieved, thereby reducing network latency.

In a possible implementation, the at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, wherein the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.

In the above scheme, the first precoding information and number of layers and the second precoding information and number of layers, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication, can indicate the first mode associated with the terminal device, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation, the at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with the third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with the third number of streams.

In the above scheme, the third number of streams is the number of streams associated with the second mode, and the second precoding information and layer number, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication, can indicate the second mode associated with the terminal device, thereby performing transmission mode associated with the precoding information and layer number, or the channel sounding reference signal resource indication on the terminal device. Provide accurate instructions.

In a possible implementation manner, the third stream number is equal to the first stream number or the second stream number, or the third stream number is a minimum value between the first stream number and the second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.

In the above scheme, the second mode associated with the terminal device can be indicated through the first precoding information and number of layers and the second precoding information and number of layers, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation, the precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

A channel sounding reference signal resource indication associated with the third mode includes: a first channel sounding reference signal resource indication, or a second channel sounding reference signal resource indication; wherein the first channel sounding reference signal resource indication is associated with a first stream number, or the second channel sounding reference signal resource indication is associated with a second stream number;

In the above scheme, the third mode associated with the terminal device can be indicated through the first precoding information and the number of layers or the second precoding information and the number of layers, or the first channel sounding reference signal resource indication or the second channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation manner, the at least one precoding information and the number of layers associated with the fourth mode include: third precoding information and the number of layers, the third precoding information and the number of layers being associated with a fourth number of streams; or,

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a third channel sounding reference signal resource indication, and the third channel sounding reference signal resource indication is associated with a fourth number of streams.

In the above scheme, the fourth mode associated with the terminal device can be indicated through the third precoding information and number of layers, or the third channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation manner, the size of the third precoding information and the number of layers is less than or equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers, and/or the size of the third precoding information and the number of layers is greater than the size of the first precoding information and the number of layers or the size of the second precoding information and the number of layers;

The first precoding information and the number of layers and the second precoding information and the number of layers are two pieces of precoding information and the number of layers associated with the first mode.

In a possible implementation manner, the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

The first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.

In the above scheme, the fourth mode associated with the terminal device can be indicated through the third channel sounding reference signal resource indication, or the third channel sounding reference signal resource indication, thereby accurately indicating the channel sounding reference signal resource indication on the terminal device, or the transmission mode associated with the channel sounding reference signal resource indication.

In a possible implementation manner, the fourth stream number is less than or equal to the first stream number and the second stream number, and/or the fourth stream number is greater than the first stream number or the second stream number;

In the above scheme, the fourth mode associated with the terminal device can be indicated by the third precoding information and the number of layers, or the third channel sounding reference signal resource indication, so as to indicate the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device. The transmission mode is accurately indicated.

In a possible implementation manner, the at least one precoding information and the number of layers associated with the fourth mode include: fourth precoding information and the number of layers and fifth precoding information and the number of layers, the fourth precoding information and the number of layers are associated with a fifth stream number, and the fifth precoding information and the number of layers are associated with a sixth stream number; or,

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.

In a possible implementation manner, the fourth precoding information and the number of layers are the same as the first precoding information and the number of layers, the fifth precoding information and the number of layers are the same as the second precoding information and the number of layers, and the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode;

or,

The fourth channel sounding reference signal resource indication is the same as the first channel sounding reference signal resource indication, the fifth channel sounding reference signal resource indication is the same as the second channel sounding reference signal resource indication, and the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.

In the above scheme, the fourth mode associated with the terminal device can be indicated through the fourth precoding information and number of layers and the fifth precoding information and number of layers, or the fourth channel sounding reference signal resource indication and the fifth channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation manner, the fifth stream number is equal to the first stream number, and the sixth stream number is equal to the second stream number, wherein the first stream number and the second stream number are two stream numbers associated with the first mode.

In the above solution, by associating the fourth mode with the first mode and the same number of streams, or associating the fourth mode with the second mode and the same number of streams, the configuration of the antenna panel by the terminal device can be simplified.

In a possible implementation manner, the at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the number of ports of each resource in the third channel sounding reference signal resource set is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

The third channel sounding reference signal resource set is associated with a second number of streams;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the second number of streams is the number of streams associated with the second channel sounding reference signal resource set associated with the first mode.

In the above scheme, by associating the fourth mode and the first mode with the same channel detection reference signal resource set, or associating the fourth mode and the first mode with the same number of ports of the channel detection reference signal resource set, the configuration of the antenna panel of the terminal device can be simplified.

In a possible implementation manner, determining N modes from M modes according to the first information includes:

When the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode or the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.

In the above scheme, when the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode, the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the precoding information and the number of layers indicated by the fourth mode are the same as the precoding information and the number of layers in the first mode, the second mode or the third mode, or the channel sounding reference signal resource indication indicated by the fourth mode is the same as the channel sounding reference signal resource indication in the first mode, the second mode or the third mode. The terminal device does not need to switch from the first mode, the second mode or the third mode to the fourth mode, saving the indication overhead of the first information.

In a second aspect, an embodiment of the present application provides a communication method, which can be executed by a network device, or can also be executed by a chip or circuit set in the network device, and the present application does not limit this. The communication method includes:

Sending first information, where the first information is used to determine N modes from M modes, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of a first mode, a second mode, a third mode, and a fourth mode;

A transport block is received according to one of the N patterns.

When the value of the first information is the second value, N=1, the first information indicates the third mode, a precoding information and a number of layers associated with the third mode are one of at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

In a possible implementation, the method further includes:

sending second information, where the second information is used to indicate one mode among the N modes, and

The receiving a transport block according to the N modes comprises:

A transport block is received according to the one mode indicated by the second information.

In a possible implementation manner, M=3, N=1, and determining N modes from M modes according to the first information includes:

In a possible implementation manner, the first information is a radio resource control RRC, a media access control control element MAC CE, Or at least 2 bits in the downlink control information DCI.

or,

In a third aspect, an embodiment of the present application provides a communication device, including:

A receiving module, configured to receive first information;

a processing module, configured to determine N modes from the M modes according to the first information, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of the first mode, the second mode, the third mode, and the fourth mode;

A sending module is used to send a transmission block according to one of the N modes.

In a possible implementation, the receiving module is further configured to receive second information, where the second information is used to indicate one mode among the N modes, and

The sending module is further used to send a transmission block according to the mode indicated by the second information.

or,

When the value of the first information is the first value, N=1, and the first information indicates the first mode; When the value is the second value, the first information indicates the fifth mode.

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, the fifth channel The sounding reference signal resource indication is associated with a sixth stream number.

or,

In the third aspect of the present application, the constituent modules of the terminal device may also execute the steps described in the aforementioned first aspect and various possible implementations. For details, please refer to the aforementioned description of the first aspect and various possible implementations.

In a fourth aspect, an embodiment of the present application provides a communication device, including:

A sending module, configured to send first information, wherein the first information is used to determine N modes from M modes, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of a first mode, a second mode, a third mode, and a fourth mode;

The receiving module is used to receive the transmission block according to one mode among the N modes.

In a possible implementation manner, the sending module is further used to send second information, where the second information is used to indicate one mode among the N modes, and,

The receiving module is further used to: receive a transmission block according to the mode indicated by the second information.

or,

In a possible implementation, the at least two precoding information and the number of layers associated with the second mode include: the first precoding information information and number of layers and second precoding information and number of layers; the first precoding information and number of layers are associated with a third number of streams, or the second precoding information and number of layers are associated with the third number of streams; or,

or,

In the fourth aspect of the present application, the constituent modules of the network device may also execute the steps described in the aforementioned second aspect and various possible implementations. For details, please refer to the aforementioned description of the second aspect and various possible implementations.

In a fifth aspect, a communication device is provided, comprising: a module for implementing each step of the communication method in various implementation methods of any one of the first aspect to the second aspect.

In a sixth aspect, a communication device is provided, comprising a processor, wherein the processor is used to execute instructions stored in a memory, and when the instructions are executed, the communication device executes any one of the first to second aspects above and any one of the communication methods in its various implementation methods.

In the seventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program, wherein the program enables a receiving device to execute any one of the above-mentioned first to second aspects and any one of the communication methods in its various implementation methods.

In an eighth aspect, a chip device is provided, comprising a processing circuit, wherein the processing circuit is used to call and run a program from a memory, so that a communication device equipped with the chip device executes a method in any possible implementation of any one of the first to second aspects above.

In a ninth aspect, a computer program product comprising instructions is provided, which, when executed by a computer, causes the computer to execute a communication method as described in any one of the possible implementations of any one of the first to second aspects.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

In an embodiment of the present application, the terminal device receives the first information to indicate the transmission mode of at least one precoding information and the number of layers, or at least one channel detection reference signal resource indication on the terminal device, that is, the first information can indicate one or two modes of the first mode, the second mode, the third mode, or the fourth mode. The present application can also be applied to scenarios with multiple transmission receiving points. When the terminal device sends a transmission block to one or more transmission receiving points through multiple precoding information and the number of layers, or multiple channel detection reference signal resource indications, the first information indicates the transmission mode associated with the precoding information and the number of layers, or the channel detection reference signal resource indication on the terminal device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

FIG2 is a schematic diagram of an application scenario provided in an embodiment of the present application;

FIG3 is a schematic flow chart of an example of a communication method provided in an embodiment of the present application;

FIG4 is a schematic flow chart of another communication method provided in an embodiment of the present application;

FIG5 is a schematic flow chart of another communication method provided in an embodiment of the present application;

FIG6 is a schematic flow chart of another communication method provided in an embodiment of the present application;

FIG7 is a schematic block diagram of an example of a communication method provided in an embodiment of the present application;

FIG8 is a schematic block diagram of another communication method provided in an embodiment of the present application;

FIG9 is a schematic block diagram of another communication method provided in an embodiment of the present application;

FIG10 is a schematic block diagram of another communication method provided in an embodiment of the present application;

FIG11 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

FIG12 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

FIG13 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

Detailed ways

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system, NR, etc. The technical solutions provided in the present application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system can also be a public land mobile network (PLMN) network, a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of Things (IoT) communication system or other communication systems.

5G NR (new radio, NR) has added high-frequency bands (usually considered to be above 6G), such as 26GHz, 28GHz, 39GHz or 60GHz, compared with the low-frequency bands used in 4G LTE (long term evolution, LTE) to meet the needs of three scenarios, including enhanced mobile bandwidth, massive connections, and high reliability and low latency. High-frequency bands can achieve larger bandwidth and higher transmission rate. Due to the high signal frequency, the signal will experience severe fading during spatial propagation, resulting in severe limitation of signal coverage. In order to improve this defect, 5G NR uses beamforming (BF) technology to obtain good directional gain, and can increase the directional power in different transmission directions, improve the signal to interference plus noise radio (SINR), and thus improve system performance. In the process of 5G NR research, considering the balance between deployment cost and system performance, hybrid beamforming (HBF) technology including digital beamforming and analog beamforming was finally adopted. In the process of implementing beamforming technology, the antenna panel is the core component. The beam sends or receives information through the antenna panel. In the process of 5G NR deployment and implementation, due to the use of directional beam technology, in order to meet wide area coverage, base stations (BS) and terminals are deployed with multiple antenna panels. Especially for terminals, in order to achieve wide area coverage in limited space and save costs, the deployment of antenna panels has a more significant impact on the performance of terminal signal transmission. Current commercial products usually integrate 2 or 3 antenna panels in mobile terminals, while fixed terminals, such as customer premises equipment (CPE)/fixed wireless access (FWA), may integrate more antenna panels, such as 4 or 8 antenna panels.

It should be understood that the antenna panel in the embodiment of the present application can be a group of antenna sets. At the same time, the antenna panel in the embodiment of the present application can also be replaced by an "antenna set".

Optionally, a group of antenna sets may be a group of antennas that can independently or individually control the transmission power. A group of antenna sets may also be a group of antennas that can independently or individually perform timing. A group of antenna sets may also be a group of antennas that can independently or individually perform modulation coding.

In one implementation, the antenna panel in the embodiment of the present application may be a capability value set in the capability value set list of the terminal device. Therefore, the antenna panel in the embodiment of the present application may also be replaced by a "capability set". Among them, the capability value set may include the number of channel sounding reference signal (SRS) ports, the maximum number of SRS ports, the number of layers sent by uplink (UL), the maximum number of layers sent by UL, the coherence type of the antenna port, etc.

Optionally, there is a correspondence between a capability value set and a synchronization signal and physical broadcast channel block (SSB) resource indicator (SSBRI), or there is a correspondence between a capability value set and a channel-state information reference signal (CSI-RS) resource indicator (CRI-RS resource indicator, CRI). Thus, an antenna panel may also refer to an SSBRI or a CRI.

In one implementation, the antenna panel in the embodiment of the present application may also be replaced by "SSBRI" or "CRI".

Optionally, the correspondence between the capability value set and the SSBRI, or the correspondence between the capability value set and the CRI can be determined by the terminal device. The terminal device can report the correspondence between the capability value set and the SSBRI, or the correspondence between the capability value set and the CRI to the network device in the beam reporting. Alternatively, the terminal device can report the capability value set or the SSBRI or the CRI to the network device.

In one implementation, the antenna panel in the embodiment of the present application may be an SRS set. Therefore, the antenna panel in the present application may also be referred to as an "SRS set".

Optionally, in the embodiment of the present application, the definition of an antenna panel may be dynamically changed. For example, at time 1, an antenna panel The board includes a capability set of 4 SRS ports. At time 2 after time 1, the antenna panel may include a capability set of 2 SRS ports.

In the embodiments of the present application, a transport block (TB) refers to a basic unit of data exchange between a media access control (MAC) sublayer and a physical layer for processing by the physical layer. In one implementation, a transport block is a data block containing a MAC protocol data unit (PDU).

The mode in the embodiments of the present application may be a transmission method, a transmission rule, a mapping method, a mapping rule, or a method for determining resources.

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

Fig. 1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application. As shown in Fig. 1, the wireless communication system 100 may include: a network device 101 and a terminal device 102, the terminal device 102 may be connected to the network device 101, wherein the network device 101 may also be referred to as a base station device.

It should be understood that the above-mentioned communication system 100 may include multiple terminal devices 102 and multiple network devices 101, and the embodiments of the present application are not limited to this.

In one implementation, the present application can be applied to a variety of mobile communication scenarios, including but not limited to point-to-point transmission between network device 101 and terminal device 102 or between terminal devices 102, multi-hop transmission between network device 101 and terminal device 102, DC (dual connectivity) or multi-connection scenarios between multiple base stations and user devices.

It should be understood that the terminal device 102 in the embodiment of the present application may refer to an unmanned aerial vehicle (UAV), an access terminal, a user unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal, a user equipment (UE), a terminal, a wireless communication device, a user agent or a user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future public land mobile network (PLMN) or a terminal device in a future Internet of Vehicles, etc., and the embodiment of the present application is not limited to this.

As an example but not limitation, in the embodiments of the present application, wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially functional devices that do not rely on smartphones. For example: smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. In the embodiment of the present application, IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.

In addition, in an embodiment of the present application, the terminal device may also include sensors such as smart printers, train detectors, gas stations, etc., and its main functions include collecting data (partial terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

In one implementation, the terminal device 102 may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. In the embodiment of the present application, the device for realizing the terminal function may be a terminal; or it may be a device that can support the terminal to realize the function. For example, a chip system, the device may be installed in a terminal, and the chip system may be composed of a chip, or may include a chip and other discrete devices.

It should also be understood that the network device 101 involved in the embodiment of the present application includes access network equipment, such as a base station, and the BS can be a device deployed in a wireless access network that can communicate wirelessly with a terminal. Among them, the base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point. Exemplarily, the base station involved in the embodiment of the present application can be a base station in 5G, wherein the base station in 5G can also be called a transmission receiving point or a 5G base station (next-generation node B, gNB).

The network device 101 in the embodiment of the present application can be any communication device with wireless transceiver function for communicating with the terminal device 102. The device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home evolved Node B (HeNB, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., and can also be a 5G system, such as a gNB in an NR system, or a transmission point, one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or a transmission point, such as a baseband unit, or a distributed unit (DU), etc.

In some deployments, the network device 101 in the embodiment of the present application may refer to a central unit (CU) or a DU, or the network device includes a CU and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by the DU and the AAU. It is understandable that the network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), and this application does not limit this.

Further, the CU can also be divided into a central unit of the control plane (CU-CP) and a central unit of the user plane (CU-UP). Among them, the CU-CP and the CU-UP can also be deployed on different physical devices. The CU-CP is responsible for the control plane function, mainly including the RRC layer and the PDCP-C layer. The PDCP-C layer is mainly responsible for the encryption and decryption, integrity protection, data transmission, etc. of the control plane data. The CU-UP is responsible for the user plane function, mainly including the SDAP layer and the PDCP-U layer. Among them, the SDAP layer is mainly responsible for processing the data of the core network and mapping the flow to the bearer. The PDCP-U layer is mainly responsible for at least one function of encryption and decryption, integrity protection, header compression, sequence number maintenance, and data transmission of the data plane. Specifically, the CU-CP and the CU-UP are connected through a communication interface (e.g., an E1 interface). The CU-CP represents the network device and is connected to the core network device through a communication interface (e.g., an Ng interface), and is connected to the DU through a communication interface (e.g., an F1-C (control plane) interface). The CU-UP is connected to the DU through a communication interface (e.g., an F1-U (user plane) interface). There is another possible implementation, where the PDCP-C layer is also included in the CU-UP.

It can be understood that the above protocol layer divisions of CU and DU, as well as CU-CP and CU-UP are only examples, and there may be other division methods, which are not limited in the embodiments of the present application.

The network device 101 in the present application may be a device including a CU, or a DU, or a device including a CU and a DU, or a device including a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node.

In the embodiment of the present application, the network device 101 and the terminal device 102 can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on an airplane, balloon or satellite in the air. The embodiment of the present application does not limit the scene in which the network device and the terminal device are located.

In the embodiment of the present application, the terminal device 101 or the network device 102 includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software.

In an embodiment of the present application, the device for implementing the function of the network device may be the network device 101; or it may be a device that can support the network device to implement the function, such as a chip system, which may be installed in the network device.

The technical solution provided in the embodiment of the present application can be applied to wireless communication between communication devices. Wireless communication between communication devices may include: wireless communication between network device 102 and terminal device 101, wireless communication between network devices and between terminals. In the embodiment of the present application, the term "wireless communication" may also be referred to as "communication". The term "communication" may also be referred to as "communication". Described as "data transfer", "information transfer" or "transfer".

FIG2 is a schematic diagram of an application scenario provided by an embodiment of the present application. As shown in FIG2, the application scenario includes a network device 210, a network device 220, and a terminal device 230. Among them, the terminal device 230 includes an antenna panel 231 and an antenna panel 232. As an optional implementation, in the application scenario shown in FIG2, the network device 210 and the network device 220 can be two base stations respectively. The network device 210 and the network device 220 can also be two transmission receiving points TRP of a base station.

It should be understood that the above-mentioned application scenario may include multiple terminal devices and multiple network devices, wherein the number of antenna panels of the terminal device 230 may be multiple, which is not limited in the embodiment of the present application.

In one implementation, when a network device configures multiple SRS resource sets for a terminal device, the terminal device can determine the SRS resource in the SRS resource set by receiving an SRS resource indicator (SRI) sent by the network device, and then determine the antenna panel and transmission precoding corresponding to the uplink transmission. The precoding can be digital beamforming and/or precoding, or analog beamforming and/or precoding, or a combination of digital and analog beamforming and precoding.

In one implementation, the network device may configure one or more SRS resource sets for the terminal device. An SRS resource set may include one or more SRS resources, wherein an SRS resource may include an SRS resource ID, a number of SRS ports, an SRS time domain type indication, an SRS period, a time-frequency resource position of an SRS in a time slot, and the like.

In one implementation, when the transmission mode is codebook (CB)-based uplink transmission, the network device may configure multiple SRS resource sets for the terminal device. Each SRS resource set includes one or more SRS resources, and the terminal device sends the SRS resources in each SRS resource set to the network device. Each SRS resource corresponds to an uplink channel. The network device learns different uplink channel qualities through the received SRS resources. The network device selects SRS resources according to the uplink channel qualities and indicates them to the terminal device. The network device sends SRI, transmitted precoding matrix indicator (TPMI) and transmitted rank indication (TRI) to the terminal device. SRI is used to indicate the SRS resource selected by the network device, and the terminal device can determine the SRS resource selected by the network device according to the received SRI. The terminal device sends a physical uplink shared channel (PUSCH) in the beam direction of the previously sent SRS resource. Sending PUSCH here can also be understood as sending data on PUSCH. The terminal device can further determine the antenna panel or antenna port corresponding to the PUSCH used for transmitting the PUSCH during the uplink transmission process according to the SRS resources. TPMI is used to indicate the precoding matrix used when sending the PUSCH. TRI is used to indicate the rank used when sending the PUSCH.

Optionally, for a codebook-based uplink transmission method, each SRS resource set includes at most 2 SRS resources, and each SRS resource is a multi-port SRS resource. In an embodiment of the present application, an SRS resource may be referred to as a channel, and in an embodiment of the present application, a channel may also be a transmission link. For example, as shown in FIG2 , the network device 210 and/or the network device 220 configures 2 SRS resource sets for the terminal device 230, namely, a #1 SRS resource set and a #2 SRS resource set. Each SRS resource set in FIG2 corresponds to a network device. The #1 SRS resource set includes two SRS resources, namely, channel 1 and channel 2 as shown in FIG2 , where channel 1 may be referred to as SRS resource 1, and channel 2 may be referred to as SRS resource 2. The #2 SRS resource set includes two SRS resources, namely, channel 3 and channel 4 as shown in FIG2 , where channel 3 may be referred to as SRS resource 3, and channel 4 may be referred to as SRS resource 4.

In the application scenario of Figure 2, the terminal device 230 has two antenna panels 231 and 232, and the terminal device can send four SRS resources to the network device through the two antenna panels. Figure 2 shows that the terminal device sends SRS resource 1 and SRS resource 3 through panel 231, and the terminal device sends SRS resource 2 and SRS resource 4 through panel 232. When the network device indicates the selected SRS resource to the terminal device, the terminal device can determine the antenna panel corresponding to the SRS resource, thereby determining which antenna panel to use to send PUSCH. For example, when the network device indicates to the terminal device that the selected SRS resource is SRS resource 1, the terminal device can determine that the antenna panel corresponding to SRS resource 1 is antenna panel 231, so the terminal device can determine to use panel 231 to send PUSCH. Sending PUSCH here can also be understood as sending a transmission block.

FIG2 shows an example in which each SRS resource set includes two SRS resources. As an optional implementation, each SRS resource set may also include only one SRS resource.

In one implementation, when the uplink transmission is a non-codebook (NCB)-based uplink transmission, the network device can configure multiple SRS resource sets for the terminal device. Different from the CB uplink transmission, in the NCB uplink transmission, each SRS resource set includes a maximum of 4 SRS resources, and each SRS resource is a single-port SRS resource.

It should be understood that the present application can be applicable to a codebook-based or non-codebook-based uplink transmission method. FIG. 2 shows an uplink transmission scenario based on a codebook. FIG. 2 is only an exemplary illustration and the present application does not limit this.

It is understood that the network device can select one or more SRS resources and indicate them to the terminal device, and the terminal device sends PUSCH to the network device through the one or more SRS resources indicated by the network device. The terminal device can use one or more SRS resources to send PUSCH to the network device through different transmission modes.

Optionally, in an embodiment of the present application, a PUSCH may include one or more transmission blocks, and an antenna panel may send a transmission block, or send a part of a transmission block.

Optionally, in an embodiment of the present application, the network device may indicate one SRS resource to the terminal device through one SRI, and the network device may indicate multiple SRS resources to the terminal device through multiple SRIs. In this case, each SRI indicates one SRS resource.

Optionally, in an embodiment of the present application, the terminal device sends a transmission block to the network device through the antenna panel. Specifically, the terminal device sends the transmission block to the network device through one or more demodulation reference signal (DMRS) ports of the antenna panel.

The following is a description of the four modes involved in the embodiments of the present application:

The four modes involved in the embodiment of the present application include a first mode, a second mode, a third mode and a fourth mode.

First mode:

The first mode is to simultaneously send a transport block according to at least two precoding information and number of layers (Precoding information and number of layers), or at least two channel sounding reference signal resource indicators (SRS resource indicators, SRIs), and different precoding information and number of layers or channel sounding reference signal resource indicators are associated with different parts of a transport block. For example, the first mode is to simultaneously send a transport block according to two precoding information and number of layers, or at least two channel sounding reference signal resource indicators, and different precoding information and number of layers or channel sounding reference signal resource indicators are associated with different parts of a transport block.

Alternatively, the first mode is a transmission method in which the same transmission block is sent simultaneously through at least two antenna panels on the terminal device, wherein different antenna panels send different parts of the transmission block.

Alternatively, the first mode is a transmission method in which at least two antenna panels simultaneously send the same transmission block, wherein different antenna panels send different parts of the transmission block.

Among them, the precoding information and the number of layers can also be referred to as "precoding information and the number of layers/number of streams", "precoding information and the number of streams", etc. The layer (layer) and the number of streams (rank) can be understood as equivalent concepts in the embodiments of the present application. In addition, the precoding information and the number of layers can also be understood as the transmission precoding matrix (Transmission Precoding Matrix Indicator, TPMI). For example, precoding information and the number of layers, precoding information and the number of layers domain, TPMI, and TPMI domain can be understood as the same expression. In the codebook-based physical uplink shared channel (PUSCH), the network device indicates the UE the precoding matrix (Precoding Matrix Indicator, PMI) and the number of streams (rank) used in the PUSCH transmission through the TPMI domain.

The channel sounding reference signal resource indication can also be called "SRS resource indication", "SRI", or SRI domain. In non-codebook-based PUSCH transmission, SRI is used to indicate the SRS resources selected by the network device, and the terminal device can determine the SRS resources selected by the network device based on the received SRI. The terminal device sends the PUSCH in the beam direction that previously sent the SRS resource. Sending the PUSCH here can also be understood as sending data on the PUSCH. The terminal device can further determine the antenna panel or antenna port corresponding to the transmission of the PUSCH during the uplink transmission process based on the SRS resource.

In the embodiment of the present application, two antenna panels of the terminal device correspond one to one with two transmission configuration indicator states (TCI states), or two quasi-co-location (QCL) relationships, or two beams, or two TPMI domains, or two SRI domains, or two channel sounding reference signal resource sets (SRS resource sets), or two channel sounding reference signal resources (SRS resources). Two TCI states, or two QCL relationships, or two beams, or two TPMI domains, or two SRI domains, or two SRS resource sets, or two SRS resources are associated with two antenna panels. Similarly, one TCI state, or one QCL relationship, or one beam, or one TPMI domain, or one SRI domain, or one SRS resource set, or one SRS resource is associated with one antenna panel.

In the first mode, the terminal device sends a data transmission mode of different layers at the same time, or a transmission mode of different layers of the same data at the same time, or a transmission mode of different layers of the same data at the same time according to 2 TCI states, or 2 QCL relationships, or 2 beams, or 2 TPMI domains, or 2 SRI domains, or 2 SRS resource sets (first SRS resource set and second SRS resource set), or 2 SRS resources at the same time, or at the same moment, or at the same time period. For example, a data layer 0 is sent through the first TPMI, and a data layer 1 is sent through the second TPMI. Optionally, 2 TPMI domains, or 2 SRI domains, or 2 Two TCI states, or two QCL relationships, or two SRS resource sets are associated with two code division multiplexing groups (CDMgroups). Optionally, each SRS resource set, or each TPMI domain, or each SRI domain is associated with a maximum number of streams (max rank).

For example, antenna panel 231 and antenna panel 232 send the same transmission block at the same time, where different parts of the same transmission block are sent through antenna panel 231 and antenna panel 232, or antenna panel 231 and antenna panel 232 on terminal device 230 send a transmission block respectively at the same time.

In the first mode, the terminal device can send transmission blocks to the same network device through multiple antenna panels, or send transmission blocks to different network devices.

For example, the terminal device 230 sends a part of a transmission block to the network device 210 through the antenna panel 231, and the terminal device simultaneously sends another part of the transmission block to the network device 210 through the antenna panel 232.

For another example, the terminal device 230 sends a part of a transmission block to the network device 210 through the antenna panel 231, and the terminal device simultaneously sends another part of the transmission block to the network device 220 through the antenna panel 232.

For another example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 , and the terminal device simultaneously sends another transmission block to the network device 210 through the antenna panel 232 .

For another example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 , and the terminal device simultaneously sends another transmission block to the network device 220 through the antenna panel 232 .

Optionally, in an embodiment of the present application, the first mode can also be understood as sending transmission blocks simultaneously on at least two antenna panels according to the SRS resources indicated by multiple SRIs, and sending transmission blocks on each antenna panel according to one SRS resource. For example, as shown in Figure 2, when the network device indicates SRS resource 1 and SRS resource 4 to the terminal device through two SRIs, the terminal device sends a transmission block to the network device 210 through channel 1 on the antenna panel 231, and at the same time, the terminal device sends a transmission block to the network device 220 through channel 4 on the antenna panel 232. Here, the SRS resource indicated by the SRI and the DMRS port used to send the transmission block on the antenna panel can be referred to as having a co-location relationship. Therefore, the first mode can also be understood as sending transmission blocks simultaneously on at least 2 antenna panels according to multiple co-location relationships.

It should be understood that the "simultaneous" in the first mode of the embodiment of the present application can be understood as at least two antenna panels on the terminal device having an intersection within the time unit of sending transmission blocks to the network device, or "simultaneous" can be understood as the same moment, or "simultaneous" can be understood as the same time.

Optionally, the first mode can also be called space division multiplexing (SDM) mode, or SDM transmission mode.

Second mode:

The second mode is to simultaneously send a transport block according to at least two precoding information and numbers of layers, or at least two channel sounding reference signal resource indications, and different precoding information and numbers of layers or channel sounding reference signal resource indications are associated with the same part of a transport block. For example, the second mode is to simultaneously send a transport block according to two precoding information and numbers of layers, or two channel sounding reference signal resource indications, and different precoding information and numbers of layers or channel sounding reference signal resource indications are associated with the same part of a transport block. For the description of precoding information and number of layers, channel sounding reference signal resource indication, and antenna panel, please refer to the description in the aforementioned first mode.

Alternatively, the second mode is a transmission mode in which the terminal device simultaneously sends the same transmission block through at least two antenna panels.

In the second mode, the terminal device sends the same data stream of a data, or sends the same data, or sends the same data/data stream at the same time, or at the same moment, or at the same time, or at the same time, or at the same time, according to (or using) 2 TCI states, or 2 QCL relationships, or 2 beams, or 2 TPMI domains, or 2 SRI domains, or 2 SRS resource sets, or 2 SRS resources. For example, one data is sent through 2 TPMIs. Optionally, 2 TPMI domains, or 2 SRI domains, or 2 TCI states, or 2 QCL relationships, or 2 SRS resource sets are associated with a CDM group. Optionally, two SRS resource sets, or two TPMI domains, or two SRI domains are associated with the maximum number of the same stream.

For example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 at a first moment, and then the terminal device 230 sends the same transmission block to the network device 220 through the antenna panel 232 at a first moment.

For another example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 , and at the same time, the terminal device 230 sends the same transmission block to the network device 220 through the antenna panel 232 .

Here, the same transport block means that the information or data carried in two or more transport blocks is the same. Alternatively, the same transport block refers to the same part of a transport block. Alternatively, the same transport block refers to different redundancy versions of a transport block.

In the above description of the second mode, a time point can be understood as a time unit.

It should be understood that the time unit in the embodiments of the present application may be: one or more symbols, one or more time slots, one or more mini slots, one or more frames, one or more subframes, or one or more half frames.

For example, antenna panel 231 and antenna panel 232 send the same transmission block at the same time, wherein the same part of the same transmission block is sent through antenna panel 231 and antenna panel 232, or antenna panel 231 and antenna panel 232 on terminal device 230 send the same transmission block at the same time respectively.

In the second mode, the terminal device can send transmission blocks to the same network device through multiple antenna panels.

For example, the terminal device 230 sends a part of a transmission block to the network device 210 through the antenna panel 231, and the terminal device simultaneously sends the same part of the transmission block to the network device 210 through the antenna panel 232.

For another example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 , and the terminal device simultaneously sends the same transmission block to the network device 210 through the antenna panel 232 .

Optionally, in an embodiment of the present application, the second mode can also be understood as sending transmission blocks on at least two antenna panels simultaneously according to the SRS resources indicated by multiple SRIs, and sending transmission blocks on each antenna panel according to one SRS resource. For example, as shown in Figure 2, when the network device indicates SRS resource 1 and SRS resource 4 to the terminal device through two SRIs, the terminal device sends a transmission block to the network device 210 through channel 1 on the antenna panel 231, and at the same time, the terminal device sends a transmission block to the network device 220 through channel 4 on the antenna panel 232. Here, the SRS resource indicated by the SRI and the DMRS port used to send the transmission block on the antenna panel can be referred to as having a co-location relationship. Therefore, the second mode can also be understood as sending the same transmission block on at least two antenna panels simultaneously according to multiple co-location relationships.

Optionally, the second mode can be also called single frequency network (SFN) mode, or SFN transmission mode.

In some embodiments of the present application, the first mode is applicable to enhanced mobile broadband (Enhanced Mobile Broadband, eMBB), that is, a large-capacity scenario, and the second mode is applicable to ultra-reliable low-latency communications (Ultra-Reliable Low-Latency Communications, URLLC), that is, a high-reliability scenario.

Third mode:

The third mode is to send a transport block according to a precoding information and a number of layers, or a channel sounding reference signal resource indication. For the description of the precoding information and the number of layers, the channel sounding reference signal resource indication, and the antenna panel, please refer to the description of the first mode above.

Alternatively, the third mode is a transmission mode in which the terminal device sends a transmission block to the network device through an antenna panel, or a transmission mode in which the terminal device sends a transmission block to the network device according to an antenna panel, or a transmission mode in which the terminal device sends a transmission block to the network device on an antenna panel. For example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231. Or the terminal device 230 sends a transmission block to the network device 210 and the network device 220 through the antenna panel 231.

For example, in the third mode, the terminal device uses 1 TCI state, or 1 QCL relationship, or 1 beam, or 1 TPMI domain, or 1 SRI domain, or 1 SRS resource set, or 1 SRS resource to send data. Alternatively, the terminal device uses the first TCI state (or the second TCI state), or the first QCL (or the second QCL) to send data. Optionally, the transmission can be a single transmission or multiple transmissions.

In a possible implementation, the third mode can also be expressed as sending a transmission block through an antenna panel according to an SRS resource set configuration. Specifically, the third mode means that when the network device configures an SRS resource set for the terminal device, and the terminal device sends a transmission block to the network device through an antenna panel, then it is the third mode. For example, as shown in Figure 2, when the SRS resource set configured by the network device for the terminal device is the #1SRS resource set, the third mode can be understood as the terminal device 230 sending a transmission block to the network device 210 through the antenna panel 231, or the terminal device 230 sending a transmission block to the network device 210 through the antenna panel 232.

Optionally, in an embodiment of the present application, the third mode can also be understood as sending a transmission block on an antenna panel according to an SRS resource indicated by an SRI. For example, as shown in FIG2, when the network device indicates SRS resource 1 to the terminal device through an SRI, the terminal device sends a transmission block to the network device 210 through channel 1 on the antenna panel 231. Here, the SRS resource indicated by the SRI and the DMRS port used to send the transmission block on the antenna panel can be referred to as having a co-location relationship. Therefore, the third mode can also be understood as sending a transmission block according to a co-location relationship.

Optionally, the third mode can also be called a single transmission receiving point (trp, sTRP) mode, or a sTRP transmission mode.

Fourth mode:

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication. The precoding information and the number of layers associated with the fourth mode may be one or two, and the channel sounding reference signal resource indication associated with the fourth mode may be one or two. For the description of the precoding information and the number of layers, the channel sounding reference signal resource indication, and the antenna panel, refer to the description in the aforementioned first mode.

Alternatively, the fourth mode is a transmission mode in which the terminal device sends a transmission block to the network device via one antenna panel, or a transmission mode in which the terminal device sends a transmission block to the network device according to one antenna panel, or a transmission mode in which the terminal device sends a transmission block to the network device on one antenna panel. Alternatively, the fourth mode is a transmission mode in which the terminal device sends a transmission block to the network device via two antenna panels, or a transmission mode in which the terminal device sends a transmission block to the network device according to two antenna panels, or a transmission mode in which the terminal device sends a transmission block to the network device on two antenna panels.

Optionally, in a fourth mode, the terminal device transmits data using 1 TCI state, or 1 QCL relationship, or 1 beam, or 1 TPMI domain, or 1 SRI domain, or 1 SRS resource set, or 1 SRS resource. Optionally, the transmission may be a single transmission or multiple transmissions.

The difference between the fourth mode and the third mode is that the size of the precoding information and the number of layers associated with the fourth mode is greater than the size of the precoding information and the number of layers associated with the third mode.

In a possible implementation, the fourth mode can also be expressed as sending a transmission block through an antenna panel according to an SRS resource set configuration. Specifically, the fourth mode means that when the network device configures an SRS resource set for the terminal device, and the terminal device sends a transmission block to the network device through an antenna panel, then it is the fourth mode. For example, as shown in Figure 2, when the SRS resource set configured by the network device for the terminal device is the #1SRS resource set, the fourth mode can be understood as the terminal device 230 sending a transmission block to the network device 210 through the antenna panel 231, or the terminal device 230 sending a transmission block to the network device 210 through the antenna panel 232.

Optionally, in an embodiment of the present application, the fourth mode can also be understood as sending a transmission block on an antenna panel according to an SRS resource indicated by an SRI. For example, as shown in Figure 2, when the network device indicates SRS resource 1 to the terminal device through an SRI, the terminal device sends a transmission block to the network device 210 through channel 1 on the antenna panel 231. Here, the SRS resource indicated by the SRI and the DMRS port used to send the transmission block on the antenna panel can be referred to as having a co-location relationship. Therefore, the fourth mode can also be understood as sending a transmission block according to a co-location relationship.

Optionally, the fourth mode can also be called another sTRP mode, or another sTRP transmission mode.

In addition, both the third mode and the fourth mode can be called sTRP mode, the difference being that the size of one precoding information and number of layers associated with the third mode is smaller than the size of one precoding information and number of layers associated with the fourth mode, or the size of one channel sounding reference signal resource indication associated with the third mode is smaller than the size of one channel sounding reference signal resource indication associated with the fourth mode. Alternatively, the third mode is associated with one precoding information and number of layers, and the fourth mode is associated with two precoding information and number of layers. Alternatively, the third mode is associated with one channel sounding reference signal resource indication, and the fourth mode is associated with two channel sounding reference signal resource indications.

In some embodiments of the present application, in addition to the aforementioned four modes, a fifth mode may also be involved.

Fifth mode:

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications. For example, the fifth mode is to send the same transport block at at least two times according to two precoding information and the number of layers, or two channel sounding reference signal resource indications. For the description of the precoding information and the number of layers, the channel sounding reference signal resource indication, and the antenna panel, please refer to the description of the first mode above.

Alternatively, the fifth mode is a transmission mode in which the terminal device sends the same transmission block at at least two times through at least one antenna panel, wherein the transmission block is sent through one antenna panel at each of the at least two times. Alternatively, the fifth mode is a transmission mode in which the terminal device sends the same transmission block at at least two times according to at least one antenna panel, wherein the transmission block is sent according to one antenna panel at each of the at least two times. Alternatively, the fifth mode is a transmission mode in which the terminal device sends the same transmission block at at least two times on at least one antenna panel, wherein the transmission block is sent on one antenna panel at each of the at least two times.

For example, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 at a first moment, and then the terminal device 230 sends the same transmission block to the network device 220 through the antenna panel 232 at a second moment, wherein the first moment is different from the second moment.

For another example, the terminal device 230 sends a transmission block to the network device 210 via the antenna panel 231 at a first moment, and then the terminal device 230 sends the same transmission block to the network device 220 via the antenna panel 231 at a second moment, wherein the first moment and the second moment are different. same.

For another example, the terminal device 230 sends a transmission block to the network device 210 via the antenna panel 231 at a first moment, and then the terminal device 230 sends the same transmission block to the network device 210 via the antenna panel 232 at a second moment, wherein the first moment is different from the second moment.

Here, the same transport block means that the information or data carried in two or more transport blocks are the same. Alternatively, the same transport block refers to different redundancy versions of a transport block.

In the above description of the fifth mode, the moment can be understood as a time unit. Accordingly, the first moment and the second moment can be understood as the first time unit and the second time unit. Then the fifth mode can be understood as: a transmission mode in which the same transmission block is sent in at least two time units through at least one antenna panel, wherein each time unit in the at least two time units sends the transmission block through an antenna panel. At this time, the first time unit and the second time unit do not overlap.

In a possible implementation, the fifth mode can also be expressed as sending a transmission block according to one antenna panel in each of at least two time units according to a plurality of SRS resource set configurations, wherein the at least two time units do not overlap. Specifically, the fifth mode refers to when the network device configures a plurality of SRS resource sets for the terminal device, the terminal device sends a transmission block in at least two time units, and in each time unit, sends a transmission block to the network device through one antenna panel, and the two time units do not overlap, then this is the fifth mode.

For example, as shown in Figure 2, when the SRS resource sets configured by the network device for the terminal device are #1SRS resource set and #2SRS resource set, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 within the first time unit, and then the terminal device 230 sends a transmission block to the network device 220 through the antenna panel 232 within the second time unit, wherein the first time unit is different from the second time unit.

For another example, when the SRS resource sets configured by the network device for the terminal device are #1SRS resource set and #2SRS resource set, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 in a first time unit, and then the terminal device 230 sends a transmission block to the network device 220 through the antenna panel 231 in a second time unit, wherein the first time unit is different from the second time unit.

For another example, when the SRS resource sets configured by the network device for the terminal device are #1SRS resource set and #2SRS resource set, the terminal device 230 sends a transmission block to the network device 210 through the antenna panel 231 in the first time unit, and then the terminal device 230 sends the same transmission block to the network device 210 through the antenna panel 232 in the second time unit, wherein the first time unit is different from the second time unit.

Optionally, in an embodiment of the present application, the fifth mode can also be understood as sending a transmission block according to an antenna panel in each time unit of at least two time units according to the SRS resources indicated by multiple SRIs, and sending a transmission block according to an SRS resource in each time unit. For example, as shown in Figure 2, when the network device indicates SRS resource 1 and SRS resource 4 to the terminal device through two SRIs, the terminal device sends a transmission block to the network device 210 through channel 1 on the antenna panel 231 in the first time unit, and then the terminal device sends a transmission block to the network device 220 through channel 4 on the antenna panel 232 in the second time unit. Here, the SRS resource indicated by the SRI and the DMRS port used to send the transmission block on the antenna panel can be referred to as having a co-location relationship. Therefore, the fifth mode can also be understood as sending a transmission block in at least two time units according to multiple co-location relationships.

Optionally, the fifth mode can be also called time division multiplexing (TDM) mode, or TDM transmission mode.

Optionally, in a scenario where the terminal device is configured with multiple antenna panels, when the terminal device sends a transmission block to a network device, the first mode, the second mode, the third mode and the fourth mode are supported, and a network device here can be a transmission receiving point.

It can be understood that in each transmission mode, the terminal device sends a transmission block to the network device through one or more SRS resources indicated by the network device.

Next, the precoding information and number of layers, and channel sounding reference signal resource indication associated with each mode in the first mode, the second mode, the third mode, and the fourth mode involved in the embodiments of the present application are explained respectively.

In a possible implementation manner, the at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.

Specifically, each precoding information and number of layers associated with the first mode, or each channel sounding reference signal resource indication is associated with a maximum value (max rank) of a stream number. The first stream number and the second stream number are two stream numbers associated with the first mode. The first precoding information and the number of layers and the second precoding information and the number of layers, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication, can indicate the first mode associated with the terminal device, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device. For example, the first TPMI is about the first stream number, and the first SRI is associated with the first stream number. The second TPMI is about the second stream number, and the second SRI is associated with the second stream number.

In a possible implementation manner, the at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with a third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with a third number of streams.

Specifically, each precoding information and number of layers associated with the second mode, or each channel sounding reference signal resource indication is associated with a maximum value of a stream number. The third stream number is the stream number associated with the second mode, and the first precoding information and number of layers and the second precoding information and number of layers, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication can indicate the second mode associated with the terminal device, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device. For example, the first TPMI domain, or the first SRI domain is associated with the third stream number; or the second TPMI domain, or the second SRI domain is also associated with the third stream number.

In a possible implementation manner, the third stream number is equal to the first stream number or the second stream number, or the third stream number is the minimum value of the first stream number and the second stream number;

Specifically, the third stream number is the stream number associated with the second mode, and the third stream number may be equal to one of the stream numbers associated with the first mode. For example, the third stream number is equal to the first stream number. Or the third stream number is equal to the second stream number. Or, the first stream number is less than the second stream number, and the third stream number is equal to the first stream number. Or the first stream number is greater than the second stream number, and the third stream number is equal to the second stream number. There is no limitation on the value of the third stream number. Through the first precoding information and the number of layers and the second precoding information and the number of layers, or the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication, the second mode associated with the terminal device can be indicated, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device.

In a possible implementation manner, the precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

Specifically, a precoding information and a number of layers associated with the third mode, or a channel sounding reference signal resource indication is associated with a maximum value of a number of streams. The first number of streams and the second number of streams are two numbers of streams associated with the first mode. The first precoding information and the number of layers or the second precoding information and the number of layers, or the first channel sounding reference signal resource indication or the second channel sounding reference signal resource indication can indicate the third mode associated with the terminal device, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers on the terminal device, or the channel sounding reference signal resource indication. For example, the TPMI domain associated with the third mode is the first TPMI domain, the SRI domain associated with the third mode is the first SRI domain, and the first TPMI domain associated with the third mode and the first TPMI domain associated with the first mode are the same TPMI. Or, the first SRI domain associated with the third mode and the first SRI domain associated with the first mode are the same SRI. For another example, the TPMI domain associated with the third mode is the second TPMI domain, the SRI domain associated with the third mode is the second SRI domain, and the second TPMI domain associated with the third mode and the second TPMI domain associated with the first mode are the same TPMI. Alternatively, the second SRI domain associated with the third mode and the second SRI domain associated with the first mode are the same SRI.

In a possible implementation, the precoding information and the number of layers associated with the fourth mode may be a precoding information and a number of layers, or the channel sounding reference signal resource indication associated with the fourth mode may be a channel sounding reference signal resource indication, or the antenna panel associated with the fourth mode may be an antenna panel.

The at least one precoding information and the number of layers associated with the fourth mode include: the third precoding information and the number of layers, the third precoding information and the number of layers being associated with a fourth number of streams; or,

Specifically, a maximum value of a stream number associated with a precoding information and a number of layers, or a channel sounding reference signal resource indication associated with the fourth mode. The fourth stream number is a stream number associated with the fourth mode, and the fourth mode associated with the terminal device can be indicated through the third precoding information and the number of layers, or the third channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device.

The first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode. Alternatively, the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the second mode.

Specifically, the size of one precoding information and the number of layers of the fourth mode is larger than the size of one precoding information and the number of layers of the first mode, or the size of one precoding information and the number of layers of the fourth mode is equal to the size of two precoding information and the number of layers of the first mode. For example, the size of the third precoding information and the number of layers is equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers. Or, the size of the third precoding information and the number of layers is smaller than the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers. Or, the size of the third precoding information and the number of layers is larger than the size of the first precoding information and the number of layers. Or, the size of the third precoding information and the number of layers is larger than the size of the first precoding information and the number of layers. By means of the third precoding information and the number of layers, or the third channel sounding reference signal resource indication, the fourth mode associated with the terminal device can be indicated, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device.

For example, the TPMI domain associated with the fourth mode is the third TPMI domain, the TPMI domain associated with the first mode is the first TPMI domain and the second TPMI domain, the size of the third TPMI domain associated with the fourth mode is less than or equal to the sum of the first TPMI domain and the second TPMI domain, or the size of the third TPMI domain is greater than the size of the first TPMI domain, or the size of the third TPMI domain is greater than the size of the second TPMI domain.

In one possible implementation, the size of one precoding information and the number of layers associated with the fourth mode is less than or equal to the sum of the sizes of two precoding information and the number of layers associated with the first mode, and/or the size of one precoding information and the number of layers associated with the fourth mode is greater than the size of the smaller of the two precoding information and the number of layers associated with the first mode.

In one possible implementation, the size of one precoding information and the number of layers associated with the fourth mode is less than or equal to the sum of the sizes of two precoding information and the number of layers associated with the second mode, and/or the size of one precoding information and the number of layers associated with the fourth mode is greater than the size of the smaller of the two precoding information and the number of layers associated with the second mode.

In a possible implementation, the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

Specifically, the size of a channel sounding reference signal resource indication of the fourth mode is greater than the size of a channel sounding reference signal resource indication of the first mode, or the size of a channel sounding reference signal resource indication of the fourth mode is equal to the size of two channel sounding reference signal resource indications of the first mode. For example, the size of the third channel sounding reference signal resource indication is equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication. Or, the size of the third channel sounding reference signal resource indication is less than the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication. Or, the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication. Or, the size of the third channel sounding reference signal resource indication is greater than the size of the second channel sounding reference signal resource indication. Through the third channel sounding reference signal resource indication, or the third channel sounding reference signal resource indication, the fourth mode associated with the terminal device can be indicated, thereby accurately indicating the channel sounding reference signal resource indication on the terminal device, or the transmission mode associated with the channel sounding reference signal resource indication.

For example, the SRI domain associated with the fourth mode is the third SRI domain, the SRI domain associated with the first mode is the first SRI domain and the second SRI domain, the size of the third SRI domain associated with the fourth mode is less than or equal to the sum of the first SRI domain and the second SRI domain, or the size of the third SRI domain is greater than the first SRI domain. The size of the first SRI field, or the size of the third SRI field is greater than the size of the second SRI field.

In a possible implementation manner, the fourth flow number is less than or equal to the first flow number and the second flow number, and/or the fourth flow number is greater than the first flow number or the second flow number;

Specifically, the fourth stream number is the stream number associated with the fourth mode, and the fourth stream number may be equal to the sum of the two stream numbers associated with the first mode, or the fourth stream number may be less than the sum of the two stream numbers associated with the first mode. There is no limitation on the value of the fourth stream number. The fourth mode associated with the terminal device can be indicated by the third precoding information and the number of layers, or the third channel sounding reference signal resource indication, thereby accurately indicating the transmission mode associated with the precoding information and the number of layers, or the channel sounding reference signal resource indication on the terminal device.

In one possible implementation, the precoding information and the number of layers associated with the fourth mode may be two precoding information and two layers, or the channel sounding reference signal resource indication associated with the fourth mode may be two channel sounding reference signal resource indications, or the antenna panel associated with the fourth mode may be two antenna panels.

The at least one precoding information and layer number associated with the fourth mode includes: fourth precoding information and layer number and fifth precoding information and layer number, the fourth precoding information and layer number are associated with a fifth stream number, and the fifth precoding information and layer number are associated with a sixth stream number; or,

At least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.

Specifically, each precoding information and number of layers associated with the fourth mode, or each channel sounding reference signal resource indication is associated with a maximum value of a stream number. The fifth stream number and the sixth stream number are two stream numbers associated with the fourth mode. The fourth precoding information and number of layers and the fifth precoding information and number of layers, or the fourth channel sounding reference signal resource indication and the fifth channel sounding reference signal resource indication can indicate the fourth mode associated with the terminal device, thereby accurately indicating the transmission mode associated with the precoding information and number of layers, or the channel sounding reference signal resource indication on the terminal device. For example, the fourth TPMI is about the fifth stream number, and the fourth SRI is associated with the fifth stream number. The fifth TPMI is about the sixth stream number, and the fifth SRI is associated with the sixth stream number.

or,

Specifically, the two precoding information and the number of layers associated with the fourth mode are the same as the two precoding information and the number of layers associated with the first mode. Or, the two channel sounding reference signal resource indications associated with the fourth mode are the same as the two channel sounding reference signal resource indications associated with the first mode. Or, the two antenna panels associated with the fourth mode are the same as the two antenna panels associated with the first mode. By associating the same precoding information and number of layers as the first mode, or associating the same channel sounding reference signal resource indication as the first mode, the configuration of the antenna panel by the terminal device can be simplified.

The two precoding information and the number of layers associated with the fourth mode are the same as the two precoding information and the number of layers associated with the second mode. Or, the two channel sounding reference signal resource indications associated with the fourth mode are the same as the two channel sounding reference signal resource indications associated with the second mode. Or, the two antenna panels associated with the fourth mode are the same as the two antenna panels associated with the second mode. By associating the fourth mode with the same precoding information and the number of layers as the second mode, or associating the fourth mode with the same channel sounding reference signal resource indication as the second mode, the configuration of the antenna panel by the terminal device can be simplified.

Specifically, the two stream numbers associated with the fourth mode are the same as the two stream numbers associated with the first mode. Alternatively, the two stream numbers associated with the fourth mode are the same as the two stream numbers associated with the second mode. By associating the fourth mode with the same number of streams as the first mode, or associating the fourth mode with the same number of streams as the second mode, the configuration of the antenna panel by the terminal device can be simplified.

In a possible implementation, at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with the first channel sounding reference signal resource set and the third channel sounding reference signal resource set. The number of ports of each resource is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

Specifically, one of the two channel sounding reference signal resource sets associated with the fourth mode (i.e., the first channel sounding reference signal resource set) is the same as one of the channel sounding reference signal resource sets associated with the first mode (i.e., the first channel sounding reference signal resource set). And the number of ports of another channel sounding reference signal resource set (i.e., the third channel sounding reference signal resource set) of the two channel sounding reference signal resource sets associated with the fourth mode is the same as the number of ports of another channel sounding reference signal resource set associated with the first mode (i.e., the second channel sounding reference signal resource set). By associating the same channel sounding reference signal resource set with the fourth mode and the first mode, or associating the same number of ports of the channel sounding reference signal resource set with the fourth mode and the first mode, the configuration of the antenna panel by the terminal device can be simplified.

For example, the two SRS resource sets associated with the fourth mode are the first SRS resource set and the third SRS resource set. The number of ports of each resource in the third SRS resource set is the same as the number of resource ports in the second SRS resource set associated with the first mode. For another example, the two SRIs associated with the fourth mode are respectively associated with the first SRS resource set and the third SRS resource set. Optionally, the first SRI is associated with the first SRS resource set, and the second SRI is associated with the third SRS resource set, or the first SRI is associated with the third SRS resource set, and the second SRI is associated with the first SRS resource set.

In a possible implementation, the fourth mode is associated with the first channel sounding reference signal resource set and the third channel sounding reference signal resource set, and there is a corresponding relationship between the fourth mode and the first TCI, or the first QCL, or the first TRP. For example, the first TCI is TCI0, and the first QCL is QCL0.

In a possible implementation, the fourth mode-associated second channel sounding reference signal resource set and the fourth channel sounding reference signal resource set have a corresponding relationship with the fourth mode-associated second TCI, or second QCL, or second TRP. For example, the second TCI is TCI1, and the second QCL is QCL1.

In one possible implementation, the fourth mode is associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the second channel sounding reference signal resource set and a fourth channel sounding reference signal resource set are associated with the fourth mode, which are respectively indicated by different values of the first information.

In a possible implementation, at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with the second channel sounding reference signal resource set and the fourth channel sounding reference signal resource set. Optionally, the number of ports of each resource in the fourth channel sounding reference signal resource set is the same as the number of ports of each resource in the first channel sounding reference signal resource set;

The fourth channel sounding reference signal resource set is associated with the first stream number;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the first number of streams is the number of streams associated with the first channel sounding reference signal resource set associated with the first mode.

FIG3 is a schematic flow chart of a communication method provided in an embodiment of the present application, which mainly includes:

S301, a network device sends first information to a terminal device.

Specifically, the first information indicates one mode or two modes, wherein the one mode is one of the first mode, the second mode, the third mode, or the fourth mode, and the two modes are two of the first mode, the second mode, the third mode, or the fourth mode.

For example, in one implementation, by receiving the first information sent by the network device, it can be determined that the transmission mode of the antenna panel on the terminal device side is one of four modes, or the first information can also indicate that the transmission mode of the antenna panel on the terminal device side is two of the four modes.

In one implementation, the first information may be 1 bit, and optionally, the 1 bit is carried in radio resource control (RRC) information, medium access control control element (MAC CE) or downlink control information (DCI). Specifically, the value of 1 bit may indicate that the antenna panel on the terminal device side selects one or two of the four modes.

For example, when the first information is 1 bit in the DCI, and when the first value of the 1 bit in the DCI is 1, the first information indicates two modes, which are the first mode and the second mode.

For another example, when the first information is 1 bit in the DCI, and when the first value of the 1 bit in the DCI is 0, the first information indicates two modes, which are the first mode and the second mode.

The above only takes the first value as 1 and the second value as 0 as an example. It can be understood that the first value can be 0 and the second value can be 1.

When the first information is a first value, the first information indicates any one or two of the four modes, and when the first information is a second value, the first information indicates one of the four modes and the above-mentioned one. When the first information is a third value, the first information indicates one of the four modes and the above-mentioned one. Alternatively, when the first information is a fourth value, the first information indicates one of the four modes and the above-mentioned one.

The embodiments of the present application are not limited here and will not be described in detail.

In one implementation, the first information may be 2 bits. Optionally, when the first information is 2 bits, the first indication may directly indicate one mode. The 2 bits may be carried in RRC information, MAC CE, or DCI. Optionally, when the first information is 2 bits, the first indication may directly indicate two modes. The 2 bits may be carried in RRC information, MAC CE, or DCI.

S302: The terminal device sends a transmission block according to a transmission mode indicated by the first information or one of the two modes.

Optionally, when the first indication information indicates one mode, the terminal device sends the transport block according to the mode indicated by the first indication information. When the first indication information indicates two modes, the terminal device sends the transport block according to one mode of the two modes indicated by the first information.

Optionally, when the first information indicates two modes, the method may further include step S303: the network device sends second information to the terminal device, where the second information is used to indicate one of the two modes.

For example, when the first information indicates that the transmission mode of the antenna panel on the terminal device is the first mode and the second mode, the terminal device can send the transmission block through the first mode or the second mode.

In one implementation, the second information may be at least one bit in RRC, MAC CE or DCI. For example, when the first information indicates that the transmission mode of the antenna panel on the terminal device is the first mode and the second mode, and when the second information is 2 bits configured in the DCI, the value of the 2 bits configured in the DCI can be used to further indicate whether the transmission mode of the antenna panel on the terminal device is the first mode or the second mode.

Specifically, the transmission mode of the antenna panel on the terminal device indicated by the second information sent by the network device is one of the two modes determined by the first information.

Optionally, in an embodiment of the present application, the first information specifically indicates one mode or two modes from multiple modes, and the multiple modes include one or more modes of the first mode, the second mode, the third mode, or the fourth mode.

In one implementation, the second information may be the number of DMRS CDM groups indicated by the antenna port field in the DCI. Alternatively, the second information may be the number of CDM groups indicated by the antenna port field in the DCI. Alternatively, the number of CDM groups is 2, the value of the second information is the fifth value, the number of CDM groups is 1, and the value of the second information is the sixth value. Alternatively, the number of CDM groups indicated by the antenna port field in the DCI is 2, the value of the second information is the fifth value, the number of CDM groups indicated by the antenna port field in the DCI is 1, and the value of the second information is the sixth value.

For example, the second information may be an antenna port field carried in RRC information, MAC CE or DCI.

FIG4 is a schematic flowchart of another communication method provided in an embodiment of the present application.

S401, the network device sends first information to the terminal device.

Specifically, the first information is used to determine a target mode from at least two modes, where the at least two modes include at least two of the first mode, the second mode, the third mode, or the fourth mode.

S402, the terminal device sends a transmission block according to the target mode.

Four optional implementations are provided below for the embodiment of FIG. 4 :

For example, the at least two modes may be two modes, and the two modes may be: a first mode and a second mode. In this case, the first information is used to indicate a mode from the two modes, and the mode is the target mode. In this case, the first information may be 1 bit, and different values of the 1 bit indicate one and the other of the two modes. The 1 bit may be carried in RRC, MAC CE or DCI.

Case 1: The first information directly indicates one of the four modes;

Case 2: The first information indicates two modes among four modes.

In this embodiment, the first information is used to indicate one mode or two modes, the one mode is the first mode, the second mode or the third mode or the fourth mode, and the two modes are the first mode and the second mode. When the first information has different values, the first information can indicate one mode or two modes. When the first information is 1 bit and the 1 bit has different values, the first information can indicate one mode or two modes in the four modes. When the first information is 2 bits, the first information can directly indicate a mode. The first information in this embodiment is the same as the first information in the embodiment of Figure 3, and will not be repeated here.

Optionally, similar to the embodiment in FIG. 3 , when the first information indicates two modes, the terminal device may determine which of the two modes is When the first information indicates two modes, the method may further include S403: the terminal device receives second information, the second information is used to indicate one of the two modes, and the one mode is the target mode. The description of the second information is the same as the embodiment in Figure 3, and will not be repeated here.

FIG5 is a schematic flowchart of another communication method provided in an embodiment of the present application.

S501, a network device sends first information to a terminal device, and the terminal device receives the first information sent by the network device.

The first information is used by the terminal device to determine N modes from M modes, where N is an integer greater than 0, and M is an integer greater than or equal to N.

The M modes include one or more of the first mode, the second mode, the third mode, or the fourth mode.

In a possible implementation, the value of M is 3. When the value of M is 3, the value of N can be 1 or 2. At this time, the first information is used to determine a transmission mode from three transmission modes. It can be understood that this embodiment is the same as the implementation in Figure 4.

In another optional embodiment, the value of M is 4, the value of N can be 1 or the value of N can be 2.

It is understood that M and N may also have other values. For example, the value of M may also be 4, 5, 6 or other possible positive integer values, and N may be any positive integer value less than or equal to M.

S502: The terminal device sends a transmission block according to one of N transmission modes.

Optionally, similar to the embodiment in FIG3, when the first information indicates two modes, the terminal device may determine that one of the two modes is the target mode, or when the first information indicates two modes, the method may further include the terminal device receiving second information, the second information being used to indicate one of the two modes, the one mode being the target mode. The description of the second information is the same as that of the embodiment in FIG3, and will not be repeated here.

FIG6 is a schematic flowchart of another communication method provided in an embodiment of the present application.

S601, a network device sends first information to a terminal device, and the terminal device receives the first information sent by the network device.

S602, the terminal device determines one mode or N modes according to the first information, wherein the one mode is one mode of the M modes, and the N modes are N modes of the M modes, where N is an integer greater than 1, and M is an integer greater than or equal to N;

The M modes include at least one or more of a first mode, a second mode, a third mode and a fourth mode.

In a possible implementation, the value of M may be 2, in which case the terminal device may determine one mode from the two modes according to the first information, or it may be understood that the first information is used to indicate one mode from the two modes. It may be understood that this embodiment is the same as implementation mode 1 in the embodiment of FIG. 4 .

In a possible implementation, the value of M may be 3. In this case, the terminal device may determine one mode or N modes from three modes according to the first information, where N may be equal to 1 or 2.

In a possible implementation, the value of M may be 4. In this case, the terminal device may determine one mode or N modes from three modes according to the first information, where N may be equal to 1 or 2.

S603, the terminal device sends a transmission block through one mode or one of N modes.

The technical solutions in the embodiments of FIG. 3 to FIG. 6 will be described in detail below.

Figures 7 to 8 and 10 show three examples of the first information indicating the transmission mode of the antenna panel on the terminal device when the first information is 2 bits in RRC, MAC CE or DCI. Figure 9 shows an example of the first information indicating the transmission mode of the antenna panel on the terminal device when the first information is 1 bit in RRC, MAC CE or DCI.

FIG. 7 is a schematic block diagram of a communication method provided in an embodiment of the present application.

In FIG7 , the first information is 2 bits in RRC, MAC CE or DCI, and when the first information takes the first value, the first information indicates two modes, the two modes are the first mode and the second mode, and when the first information takes the second value, the first information indicates one mode, the one mode is the third mode. When the first information takes the third value, the first information indicates one mode, the one mode is the third mode. When the first information takes the fourth value, the first information indicates one mode, the one mode is the fourth mode.

For example, M=4, determining N modes from M modes according to the first information includes: the first information indicates N modes, wherein,

When the value of the first information is the second value, N=1, the first information indicates the third mode, and one precoding information and one number of layers associated with the third mode are one of at least two precoding information and one number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode is one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the second value or the third value, the first information may indicate the third mode, but the precoding information and number of layers used in the third mode, or the channel sounding reference signal resource indication are different.

In a possible implementation manner, second information is received, where the second information is used to indicate one mode among N modes, and a transport block is sent according to the mode indicated by the second information.

When the value of the second information is the sixth value, the second information indicates the second mode.

For example, the number of CDM groups indicated by the antenna port field in the DCI is 2, the value of the second information is the fifth value, the number of CDM groups is 1, and the value of the second information is the sixth value.

As shown in Figure 7, taking the first information and the second information specifically being DCI as an example, DCI adds 2 bits of indication information, which can indicate the dynamic switching between the co-transmission mode and the sTRP mode, where the co-transmission mode refers to sending the first mode or the second mode, and the sTRP mode includes the third mode and the fourth mode.

As shown in FIG. 7 , the first information and the second information are specifically bits in the DCI as an example.

For example, if the value of the first information is 00, it indicates that the terminal device adopts the first mode or the second mode. The specific mode used by the UE is determined in combination with the antenna port field in the DCI.

If the antenna port field in the DCI indicates 2 CDM groups, the UE transmits in the first mode.

If the antenna port field in the DCI indicates 1 CDM group, the UE transmits in the second mode.

At this time, the number of flows in the second TPMI domain is the same as that in the first TPMI domain, thereby reducing the overhead.

In this case, the number of flows in the second SRI domain is the same as that in the first SRI domain, thereby reducing the overhead.

For example, if the value of the first information is 01, it indicates that the terminal device adopts the third mode TPMI0. The third mode TPMI0 is that the UE sends data according to TPMI0, or SRI0, or TCI state 0, or QCL0, or SRS resource set 0. Optionally, TPMI1 or SRI1 is reserved.

For example, if the value of the first information is 10, it indicates that the terminal device adopts the third mode TPMI1. The third mode TPMI1 is that the UE sends data according to TPMI1, or SRI1, or TCI state 1, or QCL1, or SRS resource set 1. Optionally, TPMI0 or SRI0 is reserved.

For example, if the value of the first information is 11, it indicates that the terminal device adopts the fourth mode.

In the embodiment of the present application, the association relationship between the specific values {00, 01, 10, 11} of the above indication information and the four indications is not limited.

For example, M=3, determining N modes from M modes according to the first information includes: the first information indicates N modes, wherein,

When the value of the first information is the second value, N=1, the first information indicates the fourth mode, and the fourth mode is associated with the first channel sounding reference signal resource set and the third channel sounding reference signal resource set; or,

When the value of the first information is the third value, N=1, the first information indicates the fourth mode, and the fourth mode is associated with the second channel sounding reference signal resource set and the fourth channel sounding reference signal resource set.

Optionally, when the value of the first information is the fourth value, N=1, and the first information is reserved information.

For the description of the second information, please see the above content.

When the value of the first information is the first value, N=1, and the first information indicates the first mode; or,

When the value of the first information is the fourth value, N=1, and the first information indicates the second mode.

For example, if the value of the indication information included in the first information is 01, it indicates that the terminal device adopts the fourth mode, and the fourth mode is associated with the first channel sounding reference signal resource set and the third channel sounding reference signal resource set. Alternatively, the fourth mode is associated with the first TCI, the first QCL, and the first TRP. For example, the first TCI is TCI0, and the first QCL is QCL0.

For example, if the value of the indication information included in the first information is 10, it indicates that the terminal device adopts the fourth mode, and the fourth mode is associated with the second channel sounding reference signal resource set and the fourth channel sounding reference signal resource set. Alternatively, the fourth mode is associated with the second TCI, the second QCL, and the second TRP. For example, the second TCI is TCI1, and the second QCL is QCL1.

For example, if the value of the indication information is 11, it indicates that the terminal device adopts the second mode.

FIG8 is a schematic block diagram of an example of a communication method provided in an embodiment of the present application.

In FIG8 , the first information is 2 bits, and when the first information takes the first value, the first information indicates a mode, and when the first information takes the second value, the first information indicates a mode, and the mode is the third mode. When the first information takes the third value, the first information indicates a mode, and the mode is the third mode. When the first information takes the fourth value, the first information indicates a mode, and the mode is the second mode.

In a possible implementation, M=3, N=1, and determining N modes from M modes according to the first information includes: the first information indicates N modes, wherein:

When the value of the first information is a first value, the first information indicates a first mode;

When the value of the first information is the third value, the first information indicates the third mode, and one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is the fourth value, the first information indicates the second mode.

As shown in Figure 8, taking the first information as DCI as an example, DCI adds 2 bits of indication information, which can indicate the dynamic switching of the co-transmission mode and the sTRP mode, where the co-transmission mode refers to sending the first mode or the second mode, and the sTRP mode includes the third mode and the fourth mode.

For example, if the value of the indication information is 00, it indicates that the terminal device adopts the first mode.

For example, if the value of the indication information is 01, it indicates that the terminal device adopts the third mode TPMI0.

For example, if the value of the indication information is 10, it indicates that the terminal device adopts the third mode TPMI1.

FIG9 is a schematic block diagram of an example communication method provided in an embodiment of the present application.

In FIG9 , the first information is 1 bit, and when the first information takes the first value, the first information indicates one mode or the second mode, and when the first information takes the second value, the first information indicates one mode, and the one mode is the fourth mode.

In a possible implementation, M=3, and determining N modes from M modes according to the first information includes: the first information indicates N modes, wherein:

As shown in Figure 9, taking the first information as DCI as an example, DCI adds 1 bit of indication information, which can indicate the dynamic switching between the simultaneous transmission mode and the fourth mode, where the simultaneous transmission mode refers to sending the first mode or the second mode.

For example, the DCI adds 1 bit of indication information, which is combined with the number of CDM groups corresponding to the number of antenna ports indicated by the DCI to distinguish the first mode from the second mode.

For example, if the value of the indication information is 0, it indicates that the terminal device adopts the first mode or the second mode.

For example, if the value of the indication information is 1, it indicates that the terminal device adopts the fourth mode.

FIG10 is a schematic block diagram of an example communication method provided in an embodiment of the present application.

In Figure 10, the first information is 2 bits, and when the first information takes the first value, the first information indicates a mode, when the first information takes the second value, the first information indicates a mode, and the mode is the fourth mode. When the first information takes the third value, the first information indicates a mode, and the mode is the second mode.

In a possible implementation, M=3, N=1, and determining N modes from M modes according to the first information includes:

When the value of the first information is the second value, the first information indicates the fourth mode;

When the value of the first information is the third value, the first information indicates the second mode.

As shown in Figure 10, taking the first information as DCI as an example, DCI adds 2it indication information, which can indicate the dynamic switching between the simultaneous transmission mode and the fourth mode, where the simultaneous transmission mode refers to sending the first mode or the second mode.

For example, if the value of the indication information is 01, it indicates that the terminal device adopts the fourth mode

For example, if the value of the indication information is 10, the terminal device is instructed to use the second mode.

For example, the value of the indication information is 11, which indicates reserved information. The value of the indication information 11 may also indicate other information, which is not limited here.

In some embodiments of the present application, M=5, and the M modes further include: a fifth mode;

Determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein,

When the value of the first information is the first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is the second value, the first information indicates the fifth mode;

or,

When the value of the first information is the first value, N=1, and the first information indicates the first mode; when the value of the first information is the second value, the first information indicates the fifth mode.

When the first information is a first value, the first information indicates any one or two of the five modes; when the first information is a second value, the first information indicates one of the five modes and the above-mentioned mode.

For example, when the value of the first information is the first value, N=2, and the first information indicates the first mode or the second mode. In addition, one of the first mode or the second mode may be further indicated according to the second information.

For example, the first information occupies 1 bit, and when the value of the first information is the first value, N=1, and the first information indicates the first mode; when the value of the first information is the second value, the first information indicates the fifth mode. Through 1 bit of the first information, it can be indicated that the terminal device is associated with the first mode or the fifth mode.

From the above examples, it can be seen that the switching among the first mode, the second mode, the third mode and the fourth mode is realized by adding 2 bits in the DCI. Specifically, the first mode and the second mode can be implicitly switched through the number of CDM groups of the DMRS indicated by the antenna port in the DCI, without the need for additional bit indication. The first mode is suitable for eMBB, that is, a large-capacity scenario; the second mode is suitable for URLLC, that is, a high-reliability scenario. DCI can realize fast switching between the two and reduce latency. At the same time, when the UE adopts the first mode or the second mode, if the performance of one of the two simultaneous transmission links deteriorates due to occlusion or other reasons, it can quickly switch to the third mode or the fourth mode of transmission through DCI.

In some embodiments of the present application, when the UE adopts the first mode or the second mode, each antenna panel can be configured with at most 2 antenna ports, and the TPMI field requires 4 bits to indicate. However, for a 4Tx terminal device, when the sTRP mode is transmitted, at most 6 bits are required to indicate the TPMI field of the terminal device.

Assume that the size of TPMI 0 and TPMI 1 in the first mode or the second mode is 4 bits. When the UE switches from the first mode or the second mode to the sTRP mode, there may be a TPMI field in the DCI, which indicates a TPMI 2 for indicating the precoding matrix used by the UE in the sTRP mode and the number of data streams sent. Alternatively, the DCI indicates a TPMI2 for indicating the precoding matrix used by the UE in the sTRP and the number of data streams sent. The size of the TPMI 2 field is equal to the size of the TPMI 0 + TPMI 1 field, that is, the TPMI 2 field is 8 bits.

Alternatively, assume that the size of TPMI 0 and TPMI 1 in the first mode or the second mode is 4 bits. When the UE switches from the first mode or the second mode to the sTRP mode, there may be a TPMI field in the DCI, which indicates a TPMI 2 for indicating the precoding matrix used by the UE in the sTRP mode and the number of data streams sent. Alternatively, the DCI indicates a TPMI2 for indicating the precoding matrix used by the UE in the sTRP and the number of data streams sent. The size of the TPMI 2 field is less than or equal to the size of the TPMI 0 + TPMI 1 field. If the size of the TPMI 2 field is 6 bits, compared to the TPMI 0 + TPMI 1 field occupying 8 bits, 2 bits can be reserved in the DCI.

In some embodiments of the present application, when the UE switches from the first mode or the second mode to the sTRP mode, there are two situations for the indication of SRI. 1) DCI still indicates 2 SRIs. For example, PUSCH transmission based on codebook; 2) DCI only indicates 1 SRI, and the indication of this SRI is similar to the TPMI indication mentioned above, for example, PUSCH transmission based on non-codebook.

The two TPMI fields or SRI fields in the DCI are jointly used to indicate the TPMI or SRI of the terminal device in the sTRP mode, that is, all bits of the two TPMI fields are used to indicate one TPMI.

Through the above method, when the terminal device switches to the sTRP mode transmission, it can send up to 4 streams of data, increasing the data rate of the terminal device. Secondly, when the communication protocol Rel-15 or 16 supports the terminal device to send up to 4 streams of data, if the UE switches to the communication mode of Rel-15 or 16, it can also use the same number of streams without changing the number of streams.

Optionally, the terminal device sends data according to a QCL relationship or TCI state indicated in the DCI. When the UE uses the first mode or the second mode, the DCI may only have two QCL relationships or TCI states. When the DCI dynamically switches to sTRP transmission, only one QCL relationship or TCI state is indicated in the DCI.

Optionally, the terminal device sends data according to a default QCL relationship or TCI state. Here, the default QCL relationship or TCI state may follow the QCL relationship or TCI state of the PDCCH, or the control resource set (CORESET). Alternatively, the default QCL relationship or TCI state may be the PDCCH that schedules the UE to send data, or the QCL relationship or TCI state of the CORESET. Alternatively, the default QCL relationship or TCI state is one of the two QCL relationships or TCI states.

In some embodiments of the present application, when the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode, the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.

Alternatively, when the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode, the second mode or the third mode, and each antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.

Alternatively, when the terminal device is currently associated with the first mode, the second mode, or the third mode and the antenna ports of at least one antenna panel of the terminal device are irrelevant, the terminal device cannot switch to the fourth mode.

Among them, irrelevant and non-relevant are expressions with the same meaning.

If the antenna ports in each antenna panel of the terminal device are noncoherent, the first mode or the second mode is not allowed to dynamically switch to the fourth mode transmission. Alternatively, when the antenna ports in at least one antenna panel of the terminal device are noncoherent, the first mode or the second mode is not allowed to dynamically switch to the fourth mode transmission. Alternatively, switching to sTRP 4Tx transmission is allowed only when the antennas in each panel of the UE are coherent.

From the above example, it can be seen that since the antenna panel is non-correlated, when the UE is associated with 4Tx, the 4Tx should also be non-correlated. In this case, the codebook of 4Tx has been indicated by the TPMI of sTRP mode of 2Tx and the TPMI of co-transmission mode, so there is no need to repeat the indication.

SDT (small data transmission) transmission is the transmission of terminal devices in a non-connected state (such as inactive mode, idle mode), with the purpose of allowing terminal devices to transmit information without switching from a non-connected state to a connected state. This simplifies the information transmission process, shortens the transmission delay, and reduces the power consumption of terminal devices. In existing standards, terminal devices can report to network devices through capability signaling that the terminal device supports repeated transmission to improve transmission performance. However, repeated transmission increases the transmission time of the terminal device and requires the terminal device to consume more power. Therefore, the fact that the terminal device still supports repeated transmission during the SDT process is contrary to its original intention of supporting SDT to facilitate energy saving. However, the existing capability signaling indicating that the terminal device supports repeated transmission does not specify the state of the applicable terminal device (such as the state is connected, non-connected, inactive, idle, etc.). Therefore, if the terminal device reports that it supports this capability, according to the existing protocol, the network device may still configure repeated transmission for the terminal device after the terminal device enters the non-connected state, thereby increasing the transmission delay and power consumption of the terminal device.

Optionally, the first terminal device sends the first indication information, and the network device receives the first indication information, so that the terminal device can report its capability according to its own needs, and the network device can better configure appropriate resources for the terminal device according to its capability.

Exemplarily, the first indication information may be used to indicate whether the terminal device supports repeated transmission during the SDT process. For example, the first indication information may be used to indicate that the terminal device supports repeated transmission during the SDT process. For example, the first indication information may be used to indicate that the terminal device does not support repeated transmission during the SDT process. For example, the first indication information may be used to indicate that the terminal device supports transmission with a number of repetitions of N during the SDT process. N is a positive integer. For example, N is an integer greater than 1.

Exemplarily, the first indication information may be used to indicate whether the terminal device supports repeated transmission in a non-connected state. For example, the first indication information may be used to indicate whether the terminal device supports repeated transmission in a non-connected state. For example, the first indication information may be used to indicate that the terminal device does not support repeated transmission in a non-connected state.

For example, the first indication information can be used to indicate whether the repeated transmission in the SDT process of the terminal device supports configurable redundant versions. For example, the first indication information can be used to indicate that the repeated transmission in the SDT process of the terminal device supports configurable redundant versions. For example, the redundant version can be configured by the base station through signaling. For example, the redundant versions corresponding to different repeated transmissions may be different. For example, the first indication information can be used to indicate that the repeated transmission in the SDT process of the terminal device does not support configurable redundant versions. For example, the first indication information can be used to indicate that the repeated transmission in the SDT process of the terminal device supports a preset value for the redundant version. For example, the preset value is 0. For example, the redundant version value of each repeated transmission is 0.

For example, the repeated transmission may be at least one of the following:

Repeated transmission at the time slot level;

Symbol-level repetitive transmission;

PUSCH repetition Type A transmission;

PUSCH repetition Type B transmission;

Repeated transmission in CG (grant-free scheduling) scenario;

Type1 CG uplink repeated transmission;

Type2 CG uplink repeated transmission;

Repeated transmission in DG (dynamic scheduling) scenario;

Repeated transmissions in unlicensed spectrum;

Repeated transmissions in licensed spectrum;

Repeated transmission in multiple TRP (Transmit/Receive Point) scenarios;

Repeated transmission in non-TRP (Transmit/Receive Point) scenarios;

}

Among them, the time slot level repetitive transmission means that each time slot has only one transmission, while the symbol level repetitive transmission can have multiple transmissions for each time slot.

Among them, PUSCH is a physical uplink shared channel, or a channel for transmitting uplink data. PUSCH repetition Type A is a slot-level repetition transmission. PUSCH repetition Type B is a symbol-level repetition transmission.

For example, the terminal device reports the first indication information, and the terminal device can support the base station to configure the number of transmissions of the first information to be an integer greater than 1. For example, the terminal device reports the first indication information, and the terminal device can support the base station to configure the number of transmissions of the first information to be 1. For example, the terminal device does not report the first indication information, and the terminal device can support the base station to configure the number of transmissions of the first information to be 1. For example, the first information is a transport block (TB) or a data packet.

In the present application, taking the communication device as the terminal device in the above method embodiment as an example, FIG11 shows a structural schematic diagram of a terminal device 1100 , which may include a transceiver module 1110 and a processing module 1120 .

In some embodiments, the terminal device 1100 may also include a storage module (not shown in FIG. 11 ) for storing program instructions and data.

In some embodiments, the transceiver module 1110, which may also be referred to as a transceiver unit, is used to implement the sending and/or receiving functions. The transceiver module 1110 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

In some embodiments, the transceiver module 1110 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the terminal device in the above-mentioned method embodiments, and/or used to support other processes of the technology described herein; the processing module 1120 may be used to execute the processing steps performed by the terminal device in the above-mentioned method embodiments, and/or used to support other processes of the technology described herein.

In a possible implementation, the processor is used to execute the communication method executed by any terminal device in any of Figures 3 to 10 above.

Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the present application, the terminal device 1100 is presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.

In some embodiments, when the terminal device 1100 in Figure 11 is a chip or a chip system, the functions/implementation processes of the transceiver module 1110 and the processing module 1120 can be implemented through the input and output interface (or communication interface) of the chip or the chip system.

Since the terminal device 1100 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

In the present application, taking the communication device as the network device in the above method embodiment as an example, Figure 12 is a schematic block diagram of the communication device provided in the embodiment of the present application. As shown in Figure 12, the communication device 1200 may include a sending module 1210 and a receiving module 1220.

In some embodiments, the network device 1200 may further include a storage module (not shown in FIG. 12 ) for storing program instructions and data.

In some embodiments, the sending module 1210 and the receiving module 1220 are respectively used to execute the receiving and sending steps performed by the network device in the above method embodiments, and/or to support other processes of the technology described herein.

In one implementation, the processor is used to execute the communication method executed by any network device in Figures 3 to 10 above.

In the present application, the network device 1200 is presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit, a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.

In some embodiments, when the network device 1200 in Figure 12 is a chip or a chip system, the function/implementation process of the processing module 1010 can be implemented by the processor (or processing circuit) of the chip or the chip system, and the function/implementation process of the sending module 1020 can be implemented by the input and output interface (or communication interface) of the chip or the chip system.

Since the network device 1200 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor for implementing a method in any of the above method embodiments.

As a possible implementation, the communication device further includes a memory. The memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

As another possible implementation, the communication device also includes an interface circuit, which is a code/data read/write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

As another possible implementation manner, the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.

It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips, or it can include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

In some embodiments, an embodiment of the present application also provides a communication device, which includes an interface circuit and a logic circuit. The interface circuit is used to input and/or output information; the logic circuit is used to execute the method in any of the above method embodiments, and processes and/or generates output information based on the input.

As a possible product form, the terminal device and network device described in the embodiments of the present application can be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.

As another possible product form, the network device and terminal device described in the embodiment of the present application can be implemented by a general bus architecture. As shown in Figure 13, it is a structural diagram of a communication device 1300 provided in an embodiment of the present application, and the communication device 1300 includes a processor 1301 and a transceiver 1302. The communication device 1300 can be a network device or a terminal device, or a chip therein. Figure 13 only shows the main components of the communication device 1300. In addition to the processor 1301 and the transceiver 1302, the communication device may further include a memory 1303, and an input and output device (not shown in Figure 13).

Among them, the processor 1301 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 1303 is mainly used to store the software program and data. The transceiver 1302 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input and output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.

The processor 1301 , the transceiver 1302 , and the memory 1303 may be connected via a communication bus.

When the communication device is turned on, the processor 1301 can read the software program in the memory 1303, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1301 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1301, which converts the baseband signal into data and processes the data.

In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged independently of the communication device in a remote manner.

In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and/or engineering techniques. The term "product" used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.

An embodiment of the present application also provides a communication system, which includes the aforementioned terminal device and network device.

The present application also provides a computer program product comprising instructions, which implements the functions of any of the above method embodiments when the computer program product is run on a computer.

The present application also provides a chip, including a processor. The processor is used to read and run a computer program stored in a memory to execute the corresponding operations and/or processes performed by a terminal device in the method indicated by the information provided in the present application. Optionally, the chip also includes a memory, which is connected to the processor through a circuit or wire, and the processor is used to read and execute the computer program in the memory. Further optionally, the chip also includes a communication interface, and the processor is connected to the communication interface. The communication interface is used to receive processed data and/or information, and the processor obtains the data and/or information from the communication interface and processes the data and/or information. The communication interface can be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip. The processor can also be embodied as a processing circuit or a logic circuit.

The present application also provides a chip, including a processor. The processor is used to read and run a computer program stored in a memory to execute the corresponding operations and/or processes performed by a network device in the method indicated by the information provided in the present application. Optionally, the chip also includes a memory, which is connected to the processor through a circuit or wire, and the processor is used to read and execute the computer program in the memory. Further optionally, the chip also includes a communication interface, and the processor is connected to the communication interface. The communication interface is used to receive processed data and/or information, and the processor obtains the data and/or information from the communication interface and processes the data and/or information. The communication interface can be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip. The processor can also be embodied as a processing circuit or a logic circuit.

The above-mentioned chip can also be replaced by a chip system, which will not be described here.

The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

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

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

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

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

In addition, the term "and/or" in this application is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and/or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or"relationship; the term "at least one" in this application can mean "one" and "two or more". For example, at least one of A, B and C can represent seven situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, A and C exist at the same time, C and B exist at the same time, and A, B and C exist at the same time.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A communication method, characterized in that the method comprises:

receiving a first message;

Determine N modes from M modes according to the first information, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of the first mode, the second mode, the third mode, and the fourth mode; n is greater than or equal to 1,

The first mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with different parts of the one transport block;

The second mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with the same part of the one transport block;

The third mode is to send a transport block according to a precoding information and a layer number, or a channel sounding reference signal resource indication;

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication;

The transport block is sent according to one of the N patterns.
The method according to claim 1, characterized in that M=4, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein:

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, the first information indicates the third mode, a precoding information and a number of layers associated with the third mode are one of at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or

When the value of the first information is the fourth value, N=1, and the first information indicates the fourth mode.
The method according to claim 1 or 2, characterized in that M=3, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein,

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, and the first information indicates the fourth mode.
The method according to any one of claims 1 to 3, characterized in that the method further comprises:

receiving second information, the second information being used to indicate one mode among the N modes, and

The sending of the transport block according to one of the N modes comprises:

The transport block is sent according to the one mode indicated by the second information.
The method according to claim 4, characterized in that when the value of the second information is a fifth value, the second information indicates the first mode; or

When the value of the second information is a sixth value, the second information indicates the second mode.
The method according to claim 1, characterized in that M=3, N=1, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein,

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is the second value, the first information indicates the third mode, and one precoding information and the number of layers associated with the third mode are one precoding information and the number of layers associated with the first mode or the second mode. The number of layers, or a channel sounding reference signal resource indication associated with the third mode belongs to a channel sounding reference signal resource indication of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is the third value, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a fourth value, the first information indicates the second mode.
The method according to claim 1, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is a second value, the first information indicates the fourth mode;

When the value of the first information is a third value, the first information indicates the second mode.
The method according to any one of claims 1 to 2 and 4 to 7 is characterized in that the first information is at least 2 bits in the radio resource control RRC, the media access control control element MAC CE, or the downlink control information DCI.
The method according to claim 1 or 3 is characterized in that the first information is 1 bit in RRC, MAC CE, or DCI.
The method according to any one of claims 1 to 9, characterized in that said M=5, and said M modes further include: a fifth mode;

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications;

The determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is a second value, the first information indicates the fifth mode;

or,

When the value of the first information is a first value, N=1, and the first information indicates the first mode; when the value of the first information is a second value, the first information indicates the fifth mode.
The method according to any one of claims 1 to 10, characterized in that

The at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, wherein the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.
The method according to any one of claims 1 to 11, characterized in that

The at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with the third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with the third number of streams.
The method according to claim 12, characterized in that the third stream number is equal to the first stream number or the second stream number, or the third stream number is the minimum value of the first stream number and the second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 1 to 13, characterized in that

The precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

A channel sounding reference signal resource indication associated with the third mode includes: a first channel sounding reference signal resource indication, or a second channel sounding reference signal resource indication; wherein the first channel sounding reference signal resource indication is associated with a first stream number, or the second channel sounding reference signal resource indication is associated with a second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 1 to 14, characterized in that

The at least one precoding information and layer number associated with the fourth mode includes: third precoding information and layer number, wherein the third precoding information and layer number are associated with a fourth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a third channel sounding reference signal resource indication, and the third channel sounding reference signal resource indication is associated with a fourth number of streams.
The method according to claim 15, characterized in that the size of the third precoding information and the number of layers is less than or equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers, and/or the size of the third precoding information and the number of layers is greater than the size of the first precoding information and the number of layers or the size of the second precoding information and the number of layers;

The first precoding information and the number of layers and the second precoding information and the number of layers are two pieces of precoding information and the number of layers associated with the first mode.
The method according to claim 15 is characterized in that the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

The first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The method according to any one of claims 15 to 17, characterized in that the fourth flow number is less than or equal to the first flow number and the second flow number, and/or the fourth flow number is greater than the first flow number or the second flow number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 1 to 14, characterized in that the at least one precoding information and layer number associated with the fourth mode includes: fourth precoding information and layer number and fifth precoding information and layer number, the fourth precoding information and layer number are associated with a fifth stream number, and the fifth precoding information and layer number are associated with a sixth stream number; or,

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.
The method according to claim 19, characterized in that the fourth precoding information and the number of layers are the same as the first precoding information and the number of layers, the fifth precoding information and the number of layers are the same as the second precoding information and the number of layers, and the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode;

or,

The fourth channel sounding reference signal resource indication is the same as the first channel sounding reference signal resource indication, the fifth channel sounding reference signal resource indication is the same as the second channel sounding reference signal resource indication, and the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The method according to claim 19 or 20 is characterized in that the fifth stream number is equal to the first stream number, and the sixth stream number is equal to the second stream number, wherein the first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 1 to 13 and 19 to 21, characterized in that the at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the number of ports of each resource in the third channel sounding reference signal resource set is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

The third channel sounding reference signal resource set is associated with a second number of streams;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the second number of streams is the number of streams associated with the second channel sounding reference signal resource set associated with the first mode.
The method according to any one of claims 1 to 22, characterized in that determining N modes from M modes according to the first information comprises:

When the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode or the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.
A communication method, characterized in that the method comprises:

Sending first information, where the first information is used to determine N modes from M modes, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of a first mode, a second mode, a third mode, and a fourth mode;

The first mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with different parts of the one transport block;

The second mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with the same part of the one transport block;

The third mode is to send a transport block according to a precoding information and a layer number, or a channel sounding reference signal resource indication;

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication;

A transport block is received according to one of the N patterns.
The method according to claim 24, characterized in that M=4, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein,

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, the first information indicates the third mode, a precoding information and a number of layers associated with the third mode are one of at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or

When the value of the first information is the fourth value, N=1, and the first information indicates the fourth mode.
The method according to claim 24 or 25, characterized in that M=3, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, and the first information indicates the fourth mode.
The method according to any one of claims 24 to 26, characterized in that the method further comprises:

sending second information, where the second information is used to indicate one mode among the N modes, and

The receiving a transport block according to the N modes comprises:

The transport block is received according to the one mode indicated by the second information.
The method according to claim 27, characterized in that when the value of the second information is a fifth value, the second information indicates the first mode; or

When the value of the second information is a sixth value, the second information indicates the second mode.
The method according to claim 24, characterized in that M=3, N=1, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein,

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is the second value, the first information indicates the third mode, and one precoding information and one number of layers associated with the third mode are one of at least two precoding information and one number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is the third value, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a fourth value, the first information indicates the second mode.
The method according to claim 24, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is a second value, the first information indicates the fourth mode;

When the value of the first information is a third value, the first information indicates the second mode.
The method according to any one of claims 24 to 25 and 27 to 30 is characterized in that the first information is at least 2 bits in the radio resource control RRC, the media access control control element MAC CE, or the downlink control information DCI.
The method according to claim 24 or 26 is characterized in that the first information is 1 bit in RRC, MAC CE, or DCI.
The method according to any one of claims 24 to 32, characterized in that said M=5, and said M modes further include: a fifth mode;

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications;

The determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is a second value, the first information indicates the fifth mode;

or,

When the value of the first information is a first value, N=1, and the first information indicates the first mode; when the value of the first information is a second value, the first information indicates the fifth mode.
The method according to any one of claims 24 to 33, characterized in that

The at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, wherein the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.
The method according to any one of claims 24 to 34, characterized in that

The at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with the third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with the third number of streams.
The method according to claim 35, characterized in that the third stream number is equal to the first stream number or the second stream number, or the third stream number is the minimum value of the first stream number and the second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 24 to 36, characterized in that

The precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

A channel sounding reference signal resource indication associated with the third mode includes: a first channel sounding reference signal resource indication, or a second channel sounding reference signal resource indication; wherein the first channel sounding reference signal resource indication is associated with a first stream number, or the second channel sounding reference signal resource indication is associated with a second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 24 to 37, characterized in that

The at least one precoding information and layer number associated with the fourth mode includes: third precoding information and layer number, wherein the third precoding information and layer number are associated with a fourth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a third channel sounding reference signal resource indication, and the third channel sounding reference signal resource indication is associated with a fourth number of streams.
The method according to claim 38, characterized in that the size of the third precoding information and the number of layers is less than or equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers, and/or the size of the third precoding information and the number of layers is greater than the size of the first precoding information and the number of layers or the size of the second precoding information and the number of layers;

The first precoding information and the number of layers and the second precoding information and the number of layers are two pieces of precoding information and the number of layers associated with the first mode.
The method according to claim 39 is characterized in that the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

The first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The method according to any one of claims 38 to 40, characterized in that the fourth flow number is less than or equal to the first flow number and the second flow number, and/or the fourth flow number is greater than the first flow number or the second flow number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 24 to 37, characterized in that the at least one precoding information and layer number associated with the fourth mode comprises: fourth precoding information and layer number and fifth precoding information and layer number, the fourth precoding information and layer number are associated with a fifth stream number, and the fifth precoding information and layer number are associated with a sixth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.
The method according to claim 42, characterized in that the fourth precoding information and the number of layers are the same as the first precoding information and the number of layers, the fifth precoding information and the number of layers are the same as the second precoding information and the number of layers, and the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode;

or,

The fourth channel sounding reference signal resource indication is the same as the first channel sounding reference signal resource indication, the fifth channel sounding reference signal resource indication is the same as the second channel sounding reference signal resource indication, and the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The method according to claim 42 or 43 is characterized in that the fifth stream number is equal to the first stream number, and the sixth stream number is equal to the second stream number, wherein the first stream number and the second stream number are two stream numbers associated with the first mode.
The method according to any one of claims 24 to 36 and 42 to 44, characterized in that the at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the number of ports of each resource in the third channel sounding reference signal resource set is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

The third channel sounding reference signal resource set is associated with a second number of streams;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the second number of streams is the number of streams associated with the second channel sounding reference signal resource set associated with the first mode.
The method according to any one of claims 24 to 45, characterized in that determining N modes from M modes according to the first information comprises:

When the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode or the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.
A communication device, comprising:

A receiving module, configured to receive first information;

a processing module, configured to determine N modes from the M modes according to the first information, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of the first mode, the second mode, the third mode, and the fourth mode;

The first mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with different parts of the one transport block;

The second mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with the same part of the one transport block;

The third mode is to send a transport block according to a precoding information and a layer number, or a channel sounding reference signal resource indication;

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication;

A sending module is used to send a transmission block according to one of the N modes.
The apparatus according to claim 47, wherein M=4, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein:

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, the first information indicates the third mode, a precoding information and a number of layers associated with the third mode are one of at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or

When the value of the first information is the fourth value, N=1, and the first information indicates the fourth mode.
The device according to claim 47 or 48, characterized in that M=3, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, and the first information indicates the fourth mode.
The device according to any one of claims 47 to 49, characterized in that

The receiving module is further configured to receive second information, where the second information is used to indicate one mode among the N modes, and

The sending module is further used to send a transmission block according to the mode indicated by the second information.
The device according to claim 50, characterized in that when the value of the second information is a fifth value, the second information indicates the first mode; or

When the value of the second information is a sixth value, the second information indicates the second mode.
The apparatus according to claim 47, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is the second value, the first information indicates the third mode, and one precoding information and one number of layers associated with the third mode are one of at least two precoding information and one number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a third value, the first information indicates the third mode, and one precoding information and a number of layers associated with the third mode belong to another precoding information of the at least two precoding information and the number of layers associated with the first mode or the second mode. information and number of layers, or a channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a fourth value, the first information indicates the second mode.
The apparatus according to claim 47, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is a second value, the first information indicates the fourth mode;

When the value of the first information is a third value, the first information indicates the second mode.
The device according to any one of claims 47 to 48 and 50 to 53 is characterized in that the first information is at least 2 bits in the radio resource control RRC, the media access control control element MAC CE, or the downlink control information DCI.
The device according to claim 47 or 49 is characterized in that the first information is 1 bit in RRC, MAC CE, or DCI.
The device according to any one of claims 47 to 55, characterized in that said M=5, and said M modes further include: a fifth mode;

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications;

The determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is a second value, the first information indicates the fifth mode;

or,

When the value of the first information is a first value, N=1, and the first information indicates the first mode; when the value of the first information is a second value, the first information indicates the fifth mode.
The device according to any one of claims 47 to 56, characterized in that

The at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, wherein the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.
The device according to any one of claims 47 to 57, characterized in that

The at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with the third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with the third number of streams.
The device according to claim 58, characterized in that the third stream number is equal to the first stream number or the second stream number, or the third stream number is the minimum value of the first stream number and the second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 47 to 59, characterized in that

The precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

A channel sounding reference signal resource indication associated with the third mode includes: a first channel sounding reference signal resource indication, or a second channel sounding reference signal resource indication; wherein the first channel sounding reference signal resource indication is associated with a first stream number, or the second channel sounding reference signal resource indication is associated with a second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 47 to 60, characterized in that

The at least one precoding information and layer number associated with the fourth mode includes: third precoding information and layer number, wherein the third precoding information and layer number are associated with a fourth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a third channel sounding reference signal resource indication, and the third channel sounding reference signal resource indication is associated with a fourth number of streams.
The apparatus according to claim 61, characterized in that the size of the third precoding information and the number of layers is less than or equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers, and/or the size of the third precoding information and the number of layers is greater than the size of the first precoding information and the number of layers or the size of the second precoding information and the number of layers;

The first precoding information and the number of layers and the second precoding information and the number of layers are two pieces of precoding information and the number of layers associated with the first mode.
The apparatus according to claim 61, characterized in that the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

The first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The device according to any one of claims 61 to 63, characterized in that the fourth flow number is less than or equal to the first flow number and the second flow number, and/or the fourth flow number is greater than the first flow number or the second flow number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The apparatus according to any one of claims 47 to 60, characterized in that the at least one precoding information and layer number associated with the fourth mode comprises: fourth precoding information and layer number and fifth precoding information and layer number, the fourth precoding information and layer number are associated with a fifth stream number, and the fifth precoding information and layer number are associated with a sixth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.
The apparatus according to claim 65, characterized in that the fourth precoding information and the number of layers are the same as the first precoding information and the number of layers, the fifth precoding information and the number of layers are the same as the second precoding information and the number of layers, and the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode;

or,

The fourth channel sounding reference signal resource indication is the same as the first channel sounding reference signal resource indication, the fifth channel sounding reference signal resource indication is the same as the second channel sounding reference signal resource indication, and the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The device according to claim 65 or 66 is characterized in that the fifth stream number is equal to the first stream number, and the sixth stream number is equal to the second stream number, wherein the first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 47 to 59 and 65 to 67, characterized in that the at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the number of ports of each resource in the third channel sounding reference signal resource set is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

The third channel sounding reference signal resource set is associated with a second number of streams;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the second number of streams is the number of streams associated with the second channel sounding reference signal resource set associated with the first mode.
The apparatus according to any one of claims 47 to 68, wherein determining N modes from M modes according to the first information comprises:

When the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode or the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.
A communication device, comprising:

A sending module, configured to send first information, wherein the first information is used to determine N modes from M modes, where N is an integer greater than 0, and M is an integer greater than or equal to N; the M modes include one or more modes of a first mode, a second mode, a third mode, and a fourth mode;

The first mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with different parts of the one transport block;

The second mode is to simultaneously send a transport block according to at least two precoding information and layer numbers, or at least two channel sounding reference signal resource indications, and different precoding information and layer numbers or channel sounding reference signal resource indications are associated with the same part of the one transport block;

The third mode is to send a transport block according to a precoding information and a layer number, or a channel sounding reference signal resource indication;

The fourth mode is to send a transport block according to at least one precoding information and the number of layers, or at least one channel sounding reference signal resource indication;

The receiving module is used to receive the transmission block according to one mode among the N modes.
The apparatus according to claim 70, wherein M=4, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein:

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, the first information indicates the third mode, a precoding information and a number of layers associated with the third mode are one of at least two precoding information and numbers of layers associated with the first mode or the second mode, or a channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or,

When the value of the first information is the third value, N=1, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode; or

When the value of the first information is the fourth value, N=1, and the first information indicates the fourth mode.
The device according to claim 70 or 71, characterized in that M=3, the first information is selected from M patterns Determining N modes in the example includes: the first information indicates the N modes, wherein:

When the value of the first information is the first value, N=2, and the first information indicates the first mode and the second mode; or,

When the value of the first information is the second value, N=1, and the first information indicates the fourth mode.
The device according to any one of claims 70 to 72, characterized in that the sending module is further used to send second information, wherein the second information is used to indicate one mode among the N modes, and

The receiving module is further used to: receive a transmission block according to the mode indicated by the second information.
The device according to claim 73, characterized in that when the value of the second information is a fifth value, the second information indicates the first mode; or

When the value of the second information is a sixth value, the second information indicates the second mode.
The apparatus according to claim 70, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises: the first information indicates the N modes, wherein:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is the second value, the first information indicates the third mode, and one precoding information and one number of layers associated with the third mode are one of at least two precoding information and one number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to one of at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is the third value, the first information indicates the third mode, one precoding information and the number of layers associated with the third mode belong to another precoding information and the number of layers of the at least two precoding information and the number of layers associated with the first mode or the second mode, or one channel sounding reference signal resource indication associated with the third mode belongs to another channel sounding reference signal resource indication of the at least two channel sounding reference signal resource indications associated with the first mode or the second mode;

When the value of the first information is a fourth value, the first information indicates the second mode.
The apparatus according to claim 70, wherein M=3, N=1, and determining N modes from M modes according to the first information comprises:

When the value of the first information is a first value, the first information indicates the first mode;

When the value of the first information is a second value, the first information indicates the fourth mode;

When the value of the first information is a third value, the first information indicates the second mode.
The device according to any one of claims 70 to 71 and 73 to 76 is characterized in that the first information is at least 2 bits in the radio resource control RRC, the media access control control element MAC CE, or the downlink control information DCI.
The device according to claim 70 or 72 is characterized in that the first information is 1 bit in RRC, MAC CE, or DCI.
The device according to any one of claims 70 to 78, characterized in that said M=5, and said M modes further include: a fifth mode;

The fifth mode is to send the same transport block at at least two times according to at least two precoding information and the number of layers, or at least two channel sounding reference signal resource indications;

The determining N modes from M modes according to the first information includes: the first information indicates the N modes, wherein:

When the value of the first information is a first value, N=2, and the first information indicates the first mode or the second mode; when the value of the first information is a second value, the first information indicates the fifth mode;

or,

When the value of the first information is the first value, N=1, and the first information indicates the first mode; When the value is the second value, the first information indicates the fifth mode.
The device according to any one of claims 70 to 79, characterized in that

The at least two precoding information and layer numbers associated with the first mode include: first precoding information and layer number and second precoding information and layer number, the first precoding information and layer number are associated with a first stream number, and the second precoding information and layer number are associated with a second stream number; or,

The at least two channel sounding reference signal resource indications associated with the first mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication, wherein the first channel sounding reference signal resource indication is associated with a first stream number, and the second channel sounding reference signal resource indication is associated with a second stream number.
The device according to any one of claims 70 to 80, characterized in that

The at least two precoding information and layer numbers associated with the second mode include: first precoding information and layer number and second precoding information and layer number; the first precoding information and layer number are associated with a third stream number, or the second precoding information and layer number are associated with the third stream number; or,

The at least two channel sounding reference signal resource indications associated with the second mode include: a first channel sounding reference signal resource indication and a second channel sounding reference signal resource indication; the first channel sounding reference signal resource indication is associated with a third number of streams, or the second channel sounding reference signal resource indication is associated with the third number of streams.
The device according to claim 81, characterized in that the third stream number is equal to the first stream number or the second stream number, or the third stream number is the minimum value of the first stream number and the second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 70 to 82, characterized in that

The precoding information and the number of layers associated with the third mode include: first precoding information and the number of layers, or second precoding information and the number of layers; wherein the first precoding information and the number of layers are associated with a first stream number, or the second precoding information and the number of layers are associated with a second stream number; or,

A channel sounding reference signal resource indication associated with the third mode includes: a first channel sounding reference signal resource indication, or a second channel sounding reference signal resource indication; wherein the first channel sounding reference signal resource indication is associated with a first stream number, or the second channel sounding reference signal resource indication is associated with a second stream number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 70 to 83, characterized in that

The at least one precoding information and layer number associated with the fourth mode includes: third precoding information and layer number, wherein the third precoding information and layer number are associated with a fourth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a third channel sounding reference signal resource indication, and the third channel sounding reference signal resource indication is associated with a fourth number of streams.
The apparatus according to claim 84, characterized in that the size of the third precoding information and the number of layers is less than or equal to the sum of the size of the first precoding information and the number of layers and the size of the second precoding information and the number of layers, and/or the size of the third precoding information and the number of layers is greater than the size of the first precoding information and the number of layers or the size of the second precoding information and the number of layers;

The first precoding information and the number of layers and the second precoding information and the number of layers are two pieces of precoding information and the number of layers associated with the first mode.
The apparatus according to claim 85, characterized in that the size of the third channel sounding reference signal resource indication is less than or equal to the sum of the size of the first channel sounding reference signal resource indication and the size of the second channel sounding reference signal resource indication, and/or the size of the third channel sounding reference signal resource indication is greater than the size of the first channel sounding reference signal resource indication or the size of the second channel sounding reference signal resource indication;

The first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The device according to any one of claims 84 to 86, characterized in that the fourth flow number is less than or equal to the first flow number and the second flow number, and/or the fourth flow number is greater than the first flow number or the second flow number;

The first stream number and the second stream number are two stream numbers associated with the first mode.
The apparatus according to any one of claims 70 to 83, characterized in that the at least one precoding information and layer number associated with the fourth mode comprises: fourth precoding information and layer number and fifth precoding information and layer number, the fourth precoding information and layer number are associated with a fifth stream number, and the fifth precoding information and layer number are associated with a sixth stream number; or

The at least one channel sounding reference signal resource indication associated with the fourth mode includes: a fourth channel sounding reference signal resource indication and a fifth channel sounding reference signal resource indication, the fourth channel sounding reference signal resource indication is associated with a fifth stream number, and the fifth channel sounding reference signal resource indication is associated with a sixth stream number.
The apparatus according to claim 88, characterized in that the fourth precoding information and the number of layers are the same as the first precoding information and the number of layers, the fifth precoding information and the number of layers are the same as the second precoding information and the number of layers, and the first precoding information and the number of layers and the second precoding information and the number of layers are two precoding information and the number of layers associated with the first mode;

or,

The fourth channel sounding reference signal resource indication is the same as the first channel sounding reference signal resource indication, the fifth channel sounding reference signal resource indication is the same as the second channel sounding reference signal resource indication, and the first channel sounding reference signal resource indication and the second channel sounding reference signal resource indication are two channel sounding reference signal resource indications associated with the first mode.
The device according to claim 88 or 89 is characterized in that the fifth stream number is equal to the first stream number, and the sixth stream number is equal to the second stream number, wherein the first stream number and the second stream number are two stream numbers associated with the first mode.
The device according to any one of claims 70 to 82 and 88 to 90, characterized in that the at least two channel sounding reference signal resource indications associated with the fourth mode are respectively associated with a first channel sounding reference signal resource set and a third channel sounding reference signal resource set, and the number of ports of each resource in the third channel sounding reference signal resource set is the same as the number of ports of each resource in the second channel sounding reference signal resource set;

The third channel sounding reference signal resource set is associated with a second number of streams;

The first channel sounding reference signal resource set and the second channel sounding reference signal resource set are two channel sounding reference signal resource sets associated with the first mode, and the second number of streams is the number of streams associated with the second channel sounding reference signal resource set associated with the first mode.
The apparatus according to any one of claims 70 to 91, wherein determining N modes from M modes according to the first information comprises:

When the precoding information and the number of layers or the channel sounding reference signal resource indication are associated with the first mode or the second mode or the third mode, and at least one antenna port associated with the precoding information and the number of layers or the channel sounding reference signal resource indication is unrelated, the N modes do not include the fourth mode.
A communication device, characterized in that it comprises a processor, wherein the processor is used to execute instructions stored in a memory, and when the instructions are executed, the method according to any one of claims 1 to 23 is implemented.
A communication device, characterized in that it comprises a processor, wherein the processor is used to execute instructions stored in a memory, and when the instructions are executed, the method as claimed in any one of claims 24 to 46 is implemented.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed by a communication device, the method as described in any one of claims 1 to 23 is implemented, or the method as described in any one of claims 24 to 46 is implemented.
A computer program product comprises program instructions, and when the program instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 23, or 24 to 46.