Wireless communication method, terminal device and network device

Abstract

The embodiment of the invention provides a wireless communication method, terminal equipment and network equipment. A codebook supporting more than 4 antenna ports is designed. The wireless communication method comprises: a terminal device obtaining first information, the first information being used for determining a precoding matrix for uplink information transmission; the terminal equipment precodes the uplink information by adopting the precoding matrix; the terminal equipment sends the pre-coded uplink information; wherein the first information is determined according to at least one of the following information: codebook subset configuration information, antenna port number information, the maximum transmission layer number of uplink information, a waveform adopted by uplink transmission and first indication information; the codebook subset configuration information is used for indicating a codebook subset to which the precoding matrix belongs, the antenna port number information is used for indicating the number of antenna ports adopted by the terminal equipment for sending uplink information, the number of the antenna ports is greater than 4, the number of the antenna ports is a multiple of 2, and the first indication information is used for indicating a precoding matrix index.

Description

[0001] This application is a divisional application of the PCT international patent application PCT / CN2021 / 136715 with an application date of December 9, 2021, which entered the Chinese national phase with Chinese patent application number 202180103613.6 and the invention name “Wireless communication methods, terminal equipment and network equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, terminal equipment, and network equipment. Background Art

[0003] At present, for uplink transmission based on codebooks, codebooks with 2 antenna ports and 4 antenna ports can be supported. However, for some special terminals, more antenna ports can be supported. How to design a codebook that supports more antenna ports is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a method, terminal device and network device for wireless communication, and design a codebook that supports a number of antenna ports greater than 4, thereby improving the performance of uplink transmission.

[0005] In a first aspect, a wireless communication method is provided, the method comprising:

[0006] The terminal device obtains first information, where the first information is used to determine a precoding matrix for uplink information transmission;

[0007] The terminal device precodes the uplink information using the precoding matrix;

[0008] The terminal device sends precoded uplink information;

[0009] The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information;

[0010] Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

[0011] In a second aspect, a wireless communication method is provided, the method comprising:

[0012] The network device sends first information to the terminal device, where the first information is used to determine a precoding matrix for uplink information transmission;

[0013] The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information;

[0014] Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

[0015] In a third aspect, a terminal device is provided for executing the method in the first aspect.

[0016] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect.

[0017] In a fourth aspect, a network device is provided for executing the method in the second aspect.

[0018] Specifically, the network device includes a functional module for executing the method in the above second aspect.

[0019] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

[0020] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect.

[0021] In a seventh aspect, a device is provided for implementing the method in any one of the first to second aspects above.

[0022] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in any one of the first to second aspects described above.

[0023] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to second aspects above.

[0024] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above.

[0025] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects above.

[0026] Through the above technical solution, the terminal device can determine the precoding matrix for uplink information transmission based on the first information, and the number of antenna ports used by the terminal device to send uplink information is greater than 4, and the number of antenna ports is a multiple of 2. That is, the embodiment of the present application designs a codebook that supports a number of antenna ports greater than 4, thereby improving the performance of uplink transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of a codebook-based uplink transmission applied in an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of a non-codebook based uplink transmission applied in an embodiment of the present application.

[0030] Figure 4 It is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.

[0031] Figure 5 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0032] Figure 6 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0033] Figure 7 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0034] Figure 8 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0035] Fig. 9 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things (IoT), etc. things, IoT), Wireless Fidelity (WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0038] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0039] In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0040] In some embodiments, the communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiments of the present application can also be applied to licensed spectrum, where the licensed spectrum can also be considered as an unshared spectrum.

[0041] In some embodiments, the communication system in the embodiments of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range of 410 MHz to 7.125 GHz), or to the FR2 frequency band (corresponding to the frequency band range of 24.25 GHz to 52.6 GHz), or to new frequency bands such as high-frequency frequency bands corresponding to the frequency band range of 52.6 GHz to 71 GHz or the frequency band range of 71 GHz to 114.25 GHz.

[0042] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0043] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, 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 next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0044] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0045] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city or a wireless terminal device in a smart home, an in-vehicle communication device, a wireless communication chip / application specific integrated circuit (ASIC) / system on chip (SoC), etc.

[0046] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. 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 using wearable technology for 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 powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices 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 types of smart bracelets and smart jewelry for vital sign monitoring.

[0047] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0048] As an example and not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. In some embodiments, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments, the network device may also be a base station set up in a location such as land or water.

[0049] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0050] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0051] Figure 1 One network device and two terminal devices are shown exemplarily. In some embodiments, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0052] In some embodiments, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0053] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0054] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: 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.

[0055] It should be understood that this document relates to a first communication device and a second communication device, and the first communication device may be a terminal device, such as a mobile phone, a machine facility, a customer premises equipment (CPE), industrial equipment, a vehicle, etc.; the second communication device may be a counterpart communication device of the first communication device, such as a network device, a mobile phone, an industrial device, a vehicle, etc. This document describes a specific example in which the first communication device is a terminal device and the second communication device is a network device.

[0056] The terms used in the implementation mode of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0057] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0058] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0059] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0060] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0061] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0062] In order to better understand the embodiments of the present application, a codebook-based physical uplink shared channel (PUSCH) transmission scheme related to the present application is described.

[0063] Specifically, Figure 2 As shown, the process based on the codebook transmission scheme may include the following steps:

[0064] 1. The terminal device sends a sounding reference signal (SRS) corresponding to the PUSCH transmission based on the codebook to the network device;

[0065] 2. The network device performs uplink channel detection according to the SRS sent by the terminal device, performs resource scheduling for the terminal device, and determines the SRS resource corresponding to the PUSCH transmission, the SRS resource indicator (SRS resource indicator, SRI), the transmit precoding matrix indicator (Transmit Precoding Matrix Indicator, TPMI), the number of uplink transmission layers, and the modulation and coding scheme (Modulation and Coding Scheme, MCS); and the network device indicates the above information to the terminal device through downlink control information (downlink control information, DCI);

[0066] 3. The terminal device receives the DCI and sends the PUSCH according to the instructions of the DCI.

[0067] In order to better understand the embodiments of the present application, a non-codebook-based PUSCH transmission scheme related to the present application is described.

[0068] Specifically, Figure 3 As shown, the process based on the non-codebook transmission scheme may include the following steps:

[0069] 1. The terminal device measures the downlink reference signal, obtains a candidate precoding matrix, precodes the SRS using the candidate precoding matrix, and then sends the SRS corresponding to the PUSCH transmission based on the non-codebook to the network device;

[0070] 2. The network device performs uplink channel detection according to the SRS sent by the terminal device, performs resource scheduling for the terminal device, and determines the SRS resource corresponding to the beam transmitted by the PUSCH; the network device indicates the above information to the terminal device through the DCI;

[0071] 3. The terminal device receives the DCI and sends the PUSCH according to the instructions of the DCI.

[0072] In order to better understand the embodiments of the present application, the control signaling of the codebook-based PUSCH transmission related to the present application is described.

[0073] In the codebook-based PUSCH transmission scheme, the network device indicates the SRS resources corresponding to the PUSCH, the number of uplink transmission layers, and the precoding matrix to the terminal device through the DCI format. The fields in the DCI are precoding information and number of layers (Precoding information and number of layers) and SRI.

[0074] The factors affecting the number of TPMI bits in DCI include: the number of antenna ports, the codebook subset determined by the state of the high-level parameter codebook subset (codebookSubset) configuration, and the maximum number of transmission layers. Among them, the state of the codebookSubset configuration is configured according to the capabilities reported by the terminal device. The content reported by the terminal device includes: all antennas of the terminal device are coherent transmission, the antennas of the terminal device are partially coherent transmission, and the antennas of the terminal device are incoherent transmission.

[0075] Corresponding to the above content, each state in TPMI indicates the precoding matrix used for uplink information transmission.

[0076] In order to facilitate a better understanding of the embodiments of the present application, the problems solved by the present application are explained.

[0077] 1. Uplink transmission can support up to 4 antenna ports;

[0078] 2. The terminal device can report the capability to support partially coherent transmission, and the antenna ports that can perform partially coherent transmission are 2 ports out of 4 ports.

[0079] For uplink transmission with a greater number of antenna ports (such as 6 antenna ports or 8 antenna ports), codebook design has not yet been involved.

[0080] Based on the above problems, the present application proposes a codebook design scheme for multi-port transmission, and designs a codebook that supports antenna ports greater than 4, thereby improving the performance of uplink transmission.

[0081] The technical solution of the present application is described in detail below through specific embodiments.

[0082] Figure 4 is a schematic flow chart of a wireless communication method 200 according to an embodiment of the present application, such as Figure 4As shown, the wireless communication method 200 may include at least part of the following contents:

[0083] S210, the network device sends first information to the terminal device, the first information is used to determine the precoding matrix for uplink information transmission; wherein the first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, first indication information, second indication information and third indication information; wherein the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook;

[0084] S220, the terminal device precodes the uplink information using the precoding matrix;

[0085] S230, the terminal device sends precoded uplink information.

[0086] In an embodiment of the present application, the number of antenna ports used by the terminal device to send uplink information is greater than 4, and the number of antenna ports is a multiple of 2, that is, the precoding matrix for uplink information transmission can correspond to a codebook that supports a number of antenna ports greater than 4.

[0087] For example, the number of antenna ports used by the terminal device to send uplink information is N, and N=2n, where n is an integer greater than 2, for example, N=6, 8, 10, 12, 14, ..., 2n.

[0088] In an embodiment of the present application, when the terminal device is configured with multiple groups of polarized antennas or multiple antenna array blocks (panels), only the ports corresponding to a group of polarized antennas (or a panel) facing the network device or the ports corresponding to two adjacent groups of polarized antennas (or two panels) can be used to transmit uplink data, thereby concentrating power on some antenna ports with the highest efficiency and improving the performance of uplink transmission.

[0089] In an embodiment of the present application, the antenna of the terminal device can perform coherent transmission in the form of an antenna group, that is, the uplink information can be mapped to a group of antenna ports (the same as the meaning of an antenna port group) and coherently transmitted.

[0090] In an embodiment of the present application, if the terminal device supports a codebook subset for partial coherent transmission, then the terminal device also supports a codebook subset for incoherent transmission.

[0091] In an embodiment of the present application, the terminal device supports a precoding matrix in a codebook subset for partial coherent transmission to precode uplink information, and the antenna port that the terminal device corresponding to the codebook subset for partial coherent transmission can transmit coherently is a subset of all antenna ports of the terminal device, or the antenna port group that the terminal device corresponds to the codebook subset for partial coherent transmission can transmit coherently is a subset of all antenna port groups of the terminal device.

[0092] In an embodiment of the present application, the antenna port or antenna port group that the terminal device corresponding to the codebook subset for partial coherent transmission can transmit coherently may be a subset of all antenna ports of the terminal device.

[0093] In some embodiments, the uplink information includes but is not limited to at least one of the following: PUSCH, SRS.

[0094] In some embodiments, the precoding vectors in the precoding matrix are discrete Fourier transform vectors, and / or, some elements of at least one precoding vector in the precoding matrix are 0, and another part of elements are discrete Fourier transform vectors.

[0095] In some embodiments, the precoding vectors in the precoding matrix are a combination of an antenna selection codebook and a phase selection codebook, and / or, a portion of elements of at least one precoding vector in the precoding matrix are 0, and another portion of elements are a combination of an antenna selection codebook and a phase selection codebook.

[0096] In some embodiments, the maximum number of transmission layers for uplink information may be the actual number of transmission layers or the maximum number of transmission layers.

[0097] In some embodiments, the codebook subset configuration information is associated with first capability information and first antenna information; wherein the first capability information includes a codebook subset that the terminal device supports for partially coherent transmission; wherein the first antenna information is used to determine an antenna port group for partially coherent transmission.

[0098] In some embodiments, the network device receives first capability information sent by the terminal device, wherein the first capability information includes a codebook subset that the terminal device supports for partially coherent transmission; and the network device determines the codebook subset configuration information based on the first capability information and first antenna information, wherein the first antenna information is used to determine the antenna port group for partially coherent transmission.

[0099] In some embodiments, the first antenna information is predefined, or the first antenna information is determined based on antenna capability information reported by the terminal device.

[0100] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N1, where N1 is greater than or equal to 2 and N1 is less than 8. In this case, the first antenna information may be predefined or may be determined based on antenna capability information reported by the terminal device. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0101] For example, N1=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0102] Antenna port 1 and antenna port 3;

[0103] Antenna port 2 and antenna port 4;

[0104] Antenna port 5 and antenna port 7;

[0105] Antenna port 6 and antenna port 8;

[0106] Antenna port 1 and antenna port 2;

[0107] Antenna port 3 and antenna port 4;

[0108] Antenna port 5 and antenna port 6;

[0109] Antenna port 7 and antenna port 8.

[0110] That is, in the case of N1=2, the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 2 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 6 and antenna port 8, or the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 2, or the first antenna information can determine that coherent transmission is performed through antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 7 and antenna port 8.

[0111] In addition, when N1=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information may also include one of the following:

[0112] Antenna port 1 and antenna port 8;

[0113] Antenna port 2 and antenna port 7;

[0114] Antenna port 3 and antenna port 6;

[0115] Antenna port 4 and antenna port 5;

[0116] Antenna port 1 and antenna port 6;

[0117] Antenna port 2 and antenna port 5;

[0118] Antenna port 3 and antenna port 7;

[0119] Antenna port 4 and antenna port 8.

[0120] For example, when N1=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0121] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0122] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0123] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0124] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0125] That is, when N1=4, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5, antenna port 6, antenna port 7 and antenna port 8, or the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 3, antenna port 5 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0126] In addition, when N1=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information may also include one of the following:

[0127] Antenna port 1, antenna port 2, antenna port 7 and antenna port 8;

[0128] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0129] Antenna port 1, antenna port 3, antenna port 6 and antenna port 8;

[0130] Antenna port 2, antenna port 4, antenna port 5 and antenna port 7.

[0131] For example, when N1=6, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0132] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0133] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0134] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0135] That is, when N1=6, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0136] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N2, where N2 is greater than or equal to 2 and N2 is less than 6. In this case, the first antenna information may be predefined or may be determined based on antenna capability information reported by the terminal device. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6.

[0137] For example, N2=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0138] Antenna port 1 and antenna port 3;

[0139] Antenna port 2 and antenna port 4;

[0140] Antenna port 5 and antenna port 6;

[0141] Antenna port 1 and antenna port 2;

[0142] Antenna port 3 and antenna port 5;

[0143] Antenna port 4 and antenna port 6.

[0144] That is, when N2=2, the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 2 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 2, or the first antenna information can determine that coherent transmission is performed through antenna port 3 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 4 and antenna port 6.

[0145] For example, when N2=3, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0146] Antenna port 1, antenna port 2, and antenna port 3;

[0147] Antenna port 4, antenna port 5 and antenna port 6;

[0148] Antenna port 1, antenna port 3 and antenna port 5;

[0149] Antenna port 2, antenna port 4 and antenna port 6.

[0150] That is, when N2=3, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 4, antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 3 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 4 and antenna port 6.

[0151] For example, when N2=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0152] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0153] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0154] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0155] That is, when N2=4, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 3, antenna port 4 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0156] In some embodiments, the first antenna information is determined based on the first antenna capability information reported by the terminal device. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0157] Specifically, the first antenna capability information is used to indicate one of the following: a first type of antenna port group, a second type of antenna port group, and a third type of antenna port group; wherein the number of antenna ports for coherent transmission included in the first type of antenna port group is 2, the number of antenna ports for coherent transmission included in the second type of antenna port group is 4, and the number of antenna ports for coherent transmission included in the third type of antenna port group is 6.

[0158] For example, the network device receives the first antenna capability information sent by the terminal device; and the network device determines the first antenna information according to the first antenna capability information. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0159] In some embodiments, when the first antenna capability information is used to indicate the first type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0160] Antenna port 1 and antenna port 3;

[0161] Antenna port 2 and antenna port 4;

[0162] Antenna port 5 and antenna port 7;

[0163] Antenna port 6 and antenna port 8;

[0164] Antenna port 1 and antenna port 2;

[0165] Antenna port 3 and antenna port 4;

[0166] Antenna port 5 and antenna port 6;

[0167] Antenna port 7 and antenna port 8.

[0168] That is, when the first antenna capability information is used to indicate the first type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 2 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 6 and antenna port 8, or the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 2, or the first antenna information can determine that coherent transmission is performed through antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 7 and antenna port 8.

[0169] In some embodiments, when the first antenna capability information is used to indicate the second type antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0170] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0171] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0172] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0173] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0174] That is, when the first antenna capability information is used to indicate the second type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5, antenna port 6, antenna port 7 and antenna port 8, or the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 3, antenna port 5 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0175] In some embodiments, when the first antenna capability information is used to indicate the third type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0176] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0177] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0178] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0179] That is, when the first antenna capability information is used to indicate the third type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7, or the first antenna information can determine that coherent transmission is performed through antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0180] In some embodiments, the first antenna information is determined based on the second antenna capability information reported by the terminal device. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6.

[0181] Specifically, the second antenna capability information is used to indicate one of the following: a fourth type antenna port group, a fifth type antenna port group, and a sixth type antenna port group; wherein the number of antenna ports for coherent transmission included in the fourth type antenna port group is 2, the number of antenna ports for coherent transmission included in the fifth type antenna port group is 3, and the number of antenna ports for coherent transmission included in the sixth type antenna port group is 4.

[0182] For example, the network device receives the second antenna capability information sent by the terminal device; and the network device determines the first antenna information according to the second antenna capability information. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6.

[0183] In some embodiments, when the second antenna capability information is used to indicate the fourth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0184] Antenna port 1 and antenna port 3;

[0185] Antenna port 2 and antenna port 4;

[0186] Antenna port 5 and antenna port 6;

[0187] Antenna port 1 and antenna port 2;

[0188] Antenna port 3 and antenna port 5;

[0189] Antenna port 4 and antenna port 6.

[0190] That is, when the second antenna capability information is used to indicate the fourth type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 2 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 1 and antenna port 2, or the first antenna information can determine that coherent transmission is performed through antenna port 3 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 4 and antenna port 6.

[0191] In some embodiments, when the second antenna capability information is used to indicate the fifth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0192] Antenna port 1, antenna port 2, and antenna port 3;

[0193] Antenna port 4, antenna port 5 and antenna port 6;

[0194] Antenna port 1, antenna port 3 and antenna port 5;

[0195] Antenna port 2, antenna port 4 and antenna port 6.

[0196] That is, when the second antenna capability information is used to indicate the fifth type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2 and antenna port 3, or the first antenna information can determine that coherent transmission is performed through antenna port 4, antenna port 5 and antenna port 6, or the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 3 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 4 and antenna port 6.

[0197] In some embodiments, when the second antenna capability information is used to indicate the sixth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes but is not limited to one of the following:

[0198] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0199] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0200] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0201] That is, when the second antenna capability information is used to indicate the sixth type of antenna port group, the first antenna information can determine that coherent transmission is performed through antenna port 1, antenna port 2, antenna port 3 and antenna port 4, or the first antenna information can determine that coherent transmission is performed through antenna port 2, antenna port 3, antenna port 4 and antenna port 5, or the first antenna information can determine that coherent transmission is performed through antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0202] In some embodiments, the first antenna information is determined based on the third antenna capability information reported by the terminal device; wherein the third antenna capability information is used to indicate one of the following: a seventh type antenna port group, an eighth type antenna port group, a ninth type antenna port group, and a tenth type antenna port group; wherein the number of antenna ports for coherent transmission included in the seventh type antenna port group is 2, the number of antenna ports for coherent transmission included in the eighth type antenna port group is 3, the number of antenna ports for coherent transmission included in the ninth type antenna port group is 4, and the number of antenna ports for coherent transmission included in the tenth type antenna port group is 6.

[0203] Specifically, for example, the network device receives the third antenna capability information sent by the terminal device; and the network device determines the first antenna information according to the third antenna capability information.

[0204] In some embodiments, the antenna port index corresponds to an element index in each column of the precoding vector in the precoding matrix; and the element corresponding to the element index associated with the antenna port index is non-zero, and the elements corresponding to other element indexes are zero.

[0205] For example, antenna port 1 corresponds to the first antenna port, antenna port 2 corresponds to the second antenna port, and so on.

[0206] It should be noted that the above example only uses the example where the number of antenna ports indicated by the antenna port number information and used by the terminal device to send the uplink information is 6 or 8 (i.e., N=6 or N=8). When N is other values, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information can be specifically referred to the above example and will not be repeated here.

[0207] In an embodiment of the present application, the number of antenna ports capable of partially coherent transmission of the terminal device is 2, 3, or 4, which can increase the flexibility of partially coherent transmission. By determining the antenna ports capable of partially coherent transmission in a predefined manner, the signaling overhead can be reduced. By determining the antenna ports capable of partially coherent transmission by reporting the terminal's capabilities, the configuration of the network device can be more closely matched to the capabilities of the terminal device.

[0208] In some embodiments, the terminal device may determine the number of ports used for uplink information transmission based on the antenna port number information. Specifically, for example, the antenna port number information may be the number of antenna ports used for PUSCH transmission, and the number of antenna ports used for the PUSCH transmission is 8 or 6. Specifically, for example, the antenna port number information may be the number of antenna ports used for SRS transmission associated with PUSCH, and PUSCH and SRS use the same number of ports, and the number of antenna ports used for SRS transmission associated with PUSCH is 8 or 6.

[0209] The precoding matrix for uplink information transmission determined in this application is described in detail below through specific embodiments.

[0210] In Embodiment 1, the transmission layer number of uplink information is single layer, and the antenna part of the terminal device is coherently transmitted. In Embodiment 1, the number of antenna ports used by the terminal device to send the uplink information indicated by the antenna port number information is 8 (i.e., N=8) as an example. When N is other values, the embodiments of the present application can be referred to, and no further description is given here.

[0211] In Example 1, the antenna port information is the coherent transmission of the antenna part of the terminal device. For example, the antenna of the terminal device can perform coherent transmission in the form of an antenna group. When the number of transmission layers of the uplink information is a single layer, it can be mapped to a group of antenna ports, and the antenna group can also be understood as an antenna port group. The antenna ports that the terminal device can perform coherent transmission on can be predefined, or the antenna ports that the terminal device can perform coherent transmission on are determined by the capability information reported by the terminal device. For example, the antenna ports that the terminal device can perform coherent transmission on can be predefined, and the index of the antenna port of the terminal device is 1 to 8.

[0212] It should be noted that the antenna selection codebook can be understood as a codebook used for beam selection, or as a codebook used to select antenna ports capable of coherent transmission.

[0213] In Example 1, Example 11, the number of antenna ports that the terminal device can use for coherent transmission is 2. The precoding matrix for uplink information transmission can be determined based on the antenna selection codebook and the phase selection codebook. That is, the precoding matrix for uplink information transmission can be determined based on the second indication information and the third indication information.

[0214] In Example 11, the antenna selection codebook may include at least one of the following:

[0215] Index 0: Index 1: Index 2: Index 3:

[0216] In Example 11, the phase selection codebook may include at least one of the following:

[0217] Index 0: Index 1: Index 2: Index 3: Among them, 1, -1, j, -j is an orthogonal amplitude modulation character set, which can also be understood as the phase information of the selected beam.

[0218] In Example 11, taking the antenna selection codebook as index 0 as an example, the transmission codebook of the uplink information can be as shown in Table 1 below. The precoding vector of the precoding matrix corresponding to each precoding matrix index needs to be normalized to the precoding vector power, that is, the precoding matrix and factor in Table 1 The precoding matrix can be any one or more of the items in Table 1 and The product of , P1 is a positive integer. [·]T represents the conjugate transpose operation.

[0219] Table 1

[0220]

[0221] In Example 11, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy up to 4 bits, for example, 1-4 bits, and each bit state corresponds to 1 precoding matrix in Table 1; or, the precoding matrix for uplink information transmission is determined by the second indication information and the third indication information. The second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0222] In Example 1, Example 12, the number of antenna ports that the terminal device can use for coherent transmission is 4. The precoding matrix for uplink information transmission can be determined based on the antenna selection codebook and the phase selection codebook. That is, the precoding matrix for uplink information transmission can be determined based on the second indication information and the third indication information.

[0223] In Example 12, the antenna selection codebook may include at least one of the following:

[0224] Index 0: Index 1: Index 2: Index 3:

[0225] In Example 12, the phase selection codebook may include at least one of the following:

[0226] Index 0: [1 1 1 1]T, Index 1: [1 1jj]T, Index 2: [1 1 -1-1]T, Index 3: [1 1-jj]T, Index 4: [1j1j]T, Index 5: [1jj-1]T, Index 6: [1j-1-j]T, Index 7: [1j-j1]T, Index 8: [1 -1 1 -1]T, Index 9: [1 -1j-j]T, Index 10: [1 -1-1 1]T, Index 11: [1 -1-jj]T, Index 12: [1-j1-j]T, Index 13: [1-jj1]T, Index 14: [1-j-1j]T, Index 15: [1-jj-1]T.

[0227] Among them, 1, -1, j, -j are orthogonal amplitude modulation character sets, which can also be understood as the phase information of the selected beam, and [·]T represents the conjugate transpose operation. In Example 12, after each antenna selection codebook is combined with the phase selection codebook, the total number of antenna selection codebooks is as follows: Taking the antenna selection codebook as index 0, the transmission codebook of the uplink information is shown in Table 2 below, the precoding matrix and the power normalization factor The precoding matrix can be any one or more items in the table and The product of , P2 is a positive integer.

[0228] Table 2

[0229]

[0230]

[0231] It should be noted that in the above Table 2, the precoding matrix corresponding to the precoding matrix indexes 16 to 31 can be described as: the precoding matrix obtained by replacing the elements of '1' in the antenna selection codebook with index 1 with the phase selection codebook indexes 0 to 15, and replacing them in sequence. For example, the element '1' of port 5 in the antenna selection codebook with index 1 is replaced by the first element '1' in the phase selection codebook index 1, the element '1' of port 6 is replaced by the second element '1' in the phase selection codebook index 1, the element '1' of port 7 is replaced by the third element 'j' in the phase selection codebook index 1, and the element '1' of port 8 is replaced by the fourth element 'j' in the phase selection codebook index 1. The precoding matrix corresponding to the precoding matrix indexes 32 to 47 can be described as: the precoding matrix obtained by replacing the elements of '1' in the antenna selection codebook with index 2 with the phase selection codebook indexes 0 to 15, and replacing them in sequence. The precoding matrix corresponding to precoding matrix indexes 48 to 63 can be described as: replacing the elements of '1' in the antenna selection codebook index 3 with the phase selection codebook indexes 0 to 15, and obtaining the precoding matrix after the replacement in sequence.

[0232] In Example 12, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy up to 6 bits, for example, 1-6 bits, and each bit state corresponds to 1 precoding matrix in Table 2; or, the precoding matrix is ​​determined by the second indication information and the third indication information, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0233] In Embodiment 2, the number of transmission layers of the uplink information is 2, and the antenna of the terminal device is partially coherently transmitted. In Embodiment 2, the number of antenna ports used by the terminal device to send the uplink information indicated by the antenna port number information is 8 (i.e., N=8) as an example. When N is other values, the embodiments of the present application can be referred to, and no further description is given here.

[0234] In Example 2, the antenna port information is the coherent transmission of the antenna part of the terminal device. For example, the antenna of the terminal device can perform coherent transmission in the form of an antenna group. When the number of transmission layers of the uplink information is 2, each layer of the 2-layer data stream can be mapped to the same group of antenna port groups, or can be mapped to different antenna port groups. The antenna ports that the terminal device can perform coherent transmission on can be predefined, or the antenna ports that the terminal device can perform coherent transmission on are determined by the capability information reported by the terminal device. For example, the antenna ports that the terminal device can perform coherent transmission on can be predefined, and the index of the antenna port of the terminal device is 1 to 8.

[0235] It should be noted that the antenna selection codebook can be understood as a codebook used for beam selection, or as a codebook used to select antenna ports capable of coherent transmission.

[0236] In Example 2, Example 21, the number of antenna ports that the terminal device can use for coherent transmission is 2. The precoding matrix for uplink information transmission can be determined based on the antenna selection codebook and the phase selection codebook. That is, the precoding matrix for uplink information transmission can be determined based on the second indication information and the third indication information.

[0237] In Example 21, the antenna selection codebook may include at least one of the following:

[0238] Index 0: Index 1: Index 2: Index 3: Index 4: Index 5:

[0239] Index 6: Index 7: Index 8:

[0240] In Example 21, the phase selection codebook may include at least one of the following:

[0241] Index 0: Index 1: Index 2: Index 3: Index 4: Index 5: Index 6: Index 7: Index 8: Index 9:

[0242] In Example 21, taking the antenna selection codebook as index 0 as an example, the transmission codebook of the uplink information is shown in at least one of indexes 0 to 9 in the following table, and the precoding vector of the precoding matrix corresponding to each precoding matrix index needs to be normalized to the precoding vector power, that is, the precoding matrix and factor in Table 3 The precoding matrix can be any one or more of the items in Table 3 and The product of , P3 is a positive integer.

[0243] Table 3

[0244]

[0245] It should be noted that the description in Table 3 above that "replacing the element '1' in the antenna selection codebook with index 1 with the phase selection codebook index 0 to index 9" means that the precoding matrix is ​​obtained after sequential replacement. For example, the element '1' of port 5 in the antenna selection codebook with index 1 is replaced with the first row element in the phase selection codebook index 0, the element '1' of port 6 is replaced with the second row element in the phase selection codebook index 0, the element '1' of port 7 is replaced with the third row element in the phase selection codebook index 0, and the element '1' of port 8 is replaced with the fourth row element in the phase selection codebook index 0. The description in Table 3 above, "replace the elements '1' in the antenna selection codebook with index 4 with phase selection codebook indexes 0 to 9", means that the precoding matrix is ​​obtained after sequential replacement, for example, the element '1' of port 1 in the antenna selection codebook with index 4 is replaced with the first element of the first row in the phase selection codebook index 0, the element '1' of port 2 is replaced with the first element of the second row in the phase selection codebook index 0, the element '1' of port 3 is replaced with the first element of the third row in the phase selection codebook index 0, the element '1' of port 4 is replaced with the first element of the fourth row in the phase selection codebook index 0, the element '1' of port 5 is replaced with the second element of the first row in the phase selection codebook index 0, the element '1' of port 6 is replaced with the second element of the second row in the phase selection codebook index 0, the element '1' of port 7 is replaced with the second element of the third row in the phase selection codebook index 0, and the element '1' of port 8 is replaced with the second element of the fourth row in the phase selection codebook index 0. Other similarities are not repeated here.

[0246] In Example 21, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy up to 7 bits, for example, 1-7 bits, and each bit state corresponds to 1 precoding matrix in Table 3; or, the precoding matrix is ​​determined by the second indication information and the third indication information, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0247] In Example 2, Example 22, the number of antenna ports that the terminal device can use for coherent transmission is 4. The precoding matrix for uplink information transmission can be determined based on the antenna selection codebook and the phase selection codebook, and the two-layer data stream can use the same antenna port or different antenna ports.

[0248] In Example 22, the antenna selection codebook may include at least one of the following:

[0249] Index 0: Index 1: Index 2: Index 3: Index 4: Index 5:

[0250] In Example 22, the phase selection codebook may include at least one of the following:

[0251] Index 0: Index 1: Index 2: Index 3: Index 4: Index 5: Index 6: Index 7:

[0252] Among them, 1, -1, j, -j are orthogonal amplitude modulation character sets, which can also be understood as the phase information of the selected beam, and [·]T represents the conjugate transpose operation. In Example 22, after each antenna selection codebook is combined with the phase selection codebook, the total number of antenna selection codebooks is as follows: Taking the antenna selection codebook as index 0, the transmission codebook of the uplink information is shown in Table 4 below, and the precoding matrix and power normalization factor are The precoding matrix can be any one or more items in the table and The product of , P4 is a positive integer.

[0253] Table 4

[0254]

[0255]

[0256] It should be noted that the description in Table 4 above that "replacing the element '1' in the antenna selection codebook with index 1 with the phase selection codebook index 0 to index 7" means that the precoding matrix is ​​obtained after sequential replacement. For example, the element '1' of port 5 in the antenna selection codebook with index 1 is replaced with the first row element in the phase selection codebook index 0, the element '1' of port 6 is replaced with the second row element in the phase selection codebook index 0, the element '1' of port 7 is replaced with the third row element in the phase selection codebook index 0, and the element '1' of port 8 is replaced with the fourth row element in the phase selection codebook index 0. The description in Table 3 above, "replace the elements '1' in the antenna selection codebook with index 4 with phase selection codebook indexes 0 to 9", means that the precoding matrix is ​​obtained after sequential replacement, for example, the element '1' of port 1 in the antenna selection codebook with index 4 is replaced with the first element of the first row in the phase selection codebook index 0, the element '1' of port 2 is replaced with the first element of the second row in the phase selection codebook index 0, the element '1' of port 3 is replaced with the first element of the third row in the phase selection codebook index 0, the element '1' of port 4 is replaced with the first element of the fourth row in the phase selection codebook index 0, the element '1' of port 5 is replaced with the second element of the first row in the phase selection codebook index 0, the element '1' of port 6 is replaced with the second element of the second row in the phase selection codebook index 0, the element '1' of port 7 is replaced with the second element of the third row in the phase selection codebook index 0, and the element '1' of port 8 is replaced with the second element of the fourth row in the phase selection codebook index 0. Other similarities are not repeated here.

[0257] In Example 22, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy up to 6 bits, for example, 1-6 bits, and each bit state corresponds to 1 precoding matrix in Table 4; or, the precoding matrix is ​​determined by the second indication information and the third indication information, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0258] In Embodiment 3, the number of transmission layers of uplink information is 4, and the antenna of the terminal device is partially coherently transmitted. In Embodiment 3, the number of antenna ports used by the terminal device to send the uplink information indicated by the antenna port number information is 8 (i.e., N=8) as an example. When N is other values, the embodiments of the present application can be referred to, and no further description is given here.

[0259] In Example 3, the antenna port information is the coherent transmission of the antenna part of the terminal device. For example, the antenna of the terminal device can perform coherent transmission in the form of an antenna group. When the number of transmission layers of the uplink information is 4, every 2 layers of the 4-layer data stream can be mapped to the same group of antenna port groups, or every 2 layers of data streams can be mapped to different antenna port groups. The antenna ports that the terminal device can perform coherent transmission on can be predefined, or the antenna ports that the terminal device can perform coherent transmission on are determined by the capability information reported by the terminal device. For example, the antenna ports that the terminal device can perform coherent transmission on can be predefined, and the index of the antenna port of the terminal device is 1 to 8.

[0260] It should be noted that the antenna selection codebook can be understood as a codebook used for beam selection, or as a codebook used to select antenna ports capable of coherent transmission.

[0261] In Example 3, Example 31, the number of antenna ports that the terminal device can use for coherent transmission is 2. The precoding matrix for uplink information transmission may be determined based on the antenna selection codebook and the phase selection codebook.

[0262] In Example 31, the antenna selection codebook may include at least one of the following:

[0263] Index 0: Index 1:

[0264] In Example 31, the phase selection codebook may include at least one of the following:

[0265] Index 0: Index 1:

[0266] In Example 31, taking the antenna selection codebook as index 0 as an example, the transmission codebook of the uplink information is shown in at least one of the indexes 0 to 1 in Table 5 below, and taking the antenna selection codebook as index 1 as an example, the transmission codebook of the uplink information is shown in at least one of the indexes 2 to 3 in Table 5 below, and the precoding vector of the precoding matrix corresponding to each precoding matrix index needs to be normalized to the precoding vector power, that is, the precoding matrix in the table and the factor The precoding matrix can be any one or more items in the table and The product of , P5 is a positive integer.

[0267] Table 5

[0268]

[0269]

[0270] In Example 31, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy up to 2 bits, for example, 1 or 2 bits, and each bit state corresponds to 1 precoding matrix in Table 5; or, the precoding matrix is ​​determined by the second indication information and the third indication information, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0271] In Example 3, Example 32, the number of antenna ports that the terminal device can use for coherent transmission is 4. The precoding matrix for uplink information transmission may be determined based on the antenna selection codebook and the phase selection codebook.

[0272] In Example 32, the antenna selection codebook may include at least one of the following:

[0273] Index 0: Index 1: Index 2: Index 3: Index 4:

[0274] In Example 32, the phase selection codebook may include at least one of the following:

[0275] Index 0: Index 1:

[0276] In Example 32, after each antenna selection codebook is combined with the phase selection codebook, the total number of antenna selection codebooks is as follows: Taking the antenna selection codebook as index 0 as an example, the transmission codebook of the uplink information is shown in indexes 0 and 1 in Table 6 below. When the antenna selection codebook is index 1, the transmission codebook of the uplink information is shown in indexes 2 and 3 in Table 6 below. Similarly, when the antenna selection codebook is index 4, the transmission codebook of the uplink information is shown in indexes 8 and 9 in Table 6 below. The precoding matrix and the power normalization factor The precoding matrix can be any one or more items in the table and The product of , P6 is a positive integer.

[0277] Table 6

[0278]

[0279]

[0280] In Example 32, the precoding matrix index is indicated by the first indication information, and the first indication information may occupy 4 bits, for example, 1-4 bits, and each bit state corresponds to 1 precoding matrix in Table 6; or, the precoding matrix is ​​determined by the second indication information and the third indication information, and the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook. Specifically, the first information may be determined according to the first indication information, and the first information may also be determined according to the second indication information and the third indication information.

[0281] Therefore, in an embodiment of the present application, the terminal device can determine the precoding matrix for uplink information transmission based on the first information, and the number of antenna ports used by the terminal device to send uplink information is greater than 4, and the number of antenna ports is a multiple of 2. That is, the embodiment of the present application is designed to support a codebook that supports a number of antenna ports greater than 4, thereby improving the performance of uplink transmission.

[0282] In the embodiment of the present application, the generation method of the precoding matrix with 6 antenna ports is similar to the generation method of the precoding matrix with 8 antenna ports in the above example, which is not repeated here.

[0283] In some embodiments, the terminal device sends precoding capability information to the network device, and the precoding capability information is used to indicate at least one transmit precoding matrix indicator (TPMI) supported by the terminal device, or the precoding capability information is used to indicate the TPMI group supported by the terminal device. Specifically, the precoding matrix corresponding to the at least one TPMI supports the terminal device to perform PUSCH full-power transmission, or the precoding matrix corresponding to the TPMI group supports the terminal device to perform PUSCH full-power transmission. For example, before the terminal device obtains the first information, the terminal device sends the precoding capability information to the network device.

[0284] In some embodiments, the terminal device receives second information sent by the network device, the second information being used to indicate that the terminal device uses the indicated TPMI to send the PUSCH, and the precoding matrix corresponding to the indicated TPMI supports the terminal device to use full power to send the PUSCH. Specifically, the second information is determined based on the precoding capability information, that is, the network device can determine the second information based on the precoding capability information.

[0285] In some embodiments, the first information and the second information may be the same information, that is, the first information may also be used to instruct the terminal device to send the PUSCH using the indicated TPMI.

[0286] In some embodiments, the precoding capability information is associated with the number of antenna ports of the terminal device and / or the first antenna information, wherein the first antenna information is used to determine the antenna port group for partially coherent transmission.

[0287] In some embodiments, the precoding capability information is related to antenna port power information of the terminal device, wherein the antenna port power information is related to the radio frequency of the terminal device, or the antenna port power information is related to the design of a power amplifier (PA) of the terminal device.

[0288] In some embodiments, the at least one TPMI corresponds to one or more precoding matrices in a target precoding matrix set, or the TPMI group corresponds to one or more precoding matrices in a target precoding matrix set; wherein the precoding matrices in the target precoding matrix set belong to at least one precoding matrix set.

[0289] In some embodiments, the at least one precoding matrix set includes a first precoding matrix set; wherein the number of transmission layers corresponding to the precoding matrices in the first precoding matrix set is 1 (i.e., rank = 1), and the precoding matrices in the first precoding matrix set correspond to the first antenna port power information of the terminal device, and the first antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability.

[0290] For example, when the number of antenna ports of the terminal device is 8, and for rank=1, the first precoding matrix set includes at least one of the following:

[0291]

[0292]

[0293] In some embodiments, the first precoding matrix set may also include a precoding matrix supporting incoherent transmission, that is, only one element corresponding to one antenna port in each precoding matrix vector is 1, and the remaining elements are 0. Exemplarily, when the number of antenna ports of the terminal device is 8, and for rank=1, the precoding matrix for incoherent transmission in the first precoding matrix set includes at least one of the following:

[0294]

[0295] In some embodiments, the first precoding matrix set includes at least one of the following, or the precoding matrices in the first precoding matrix set include at least one of the following before performing precoding vector power normalization:

[0296]

[0297] In some embodiments, the precoding matrix in the first precoding matrix set performs precoding vector power normalization, that is, the precoding matrix in the first precoding matrix set is multiplied by a power normalization coefficient, and the power normalization coefficient can be For example

[0298] In some embodiments, the precoding matrix for rank=1 corresponds to the first antenna port power information of the terminal device. The first antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability.

[0299] In some embodiments, the at least one set of precoding matrices includes a second set of precoding matrices;

[0300] Among them, the number of transmission layers corresponding to the precoding matrices in the second precoding matrix set is 2 (that is, rank = 2), and the precoding matrices in the second precoding matrix set are a combination of any two precoding matrices with a transmission layer number of 1, or the precoding matrices in the second precoding matrix set are a combination of two items in the precoding matrices with a transmission layer number of 1 that satisfy the first condition.

[0301] Specifically, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of 2 ports or 4 ports; or, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of one antenna port group or two antenna port groups.

[0302] In some embodiments, the precoding matrices in the second precoding matrix set correspond to the second antenna port power information of the terminal device; wherein the second antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the second antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0303] In some embodiments, the precoding matrices in the second precoding matrix set are divided into two groups.

[0304] Specifically, in one precoding matrix group in the second precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group; in another precoding matrix group in the second precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0305] For example, a precoding matrix in a precoding matrix group in the second precoding matrix set is composed of any two of the following as precoding vectors (need to be multiplied by a power normalization coefficient):

[0306]

[0307] For example, the precoding matrix in a precoding matrix group in the second precoding matrix set is:

[0308] For example, a precoding matrix in another precoding matrix group in the second precoding matrix set is composed of any two of the following as precoding vectors (need to be multiplied by a power normalization coefficient), and the positions of non-zero elements of any two vectors are different:

[0309]

[0310] In some embodiments, the precoding matrix in the second precoding matrix set performs precoding vector power normalization, that is, the precoding matrix in the second precoding matrix set is multiplied by a power normalization coefficient, and the power normalization coefficient may be For example

[0311] In some embodiments, the at least one set of precoding matrices includes a third set of precoding matrices;

[0312] Among them, the number of transmission layers corresponding to the precoding matrix in the third precoding matrix set is 3 (that is, rank = 3), and the precoding matrix in the third precoding matrix set is a combination of any three precoding matrices with a transmission layer number of 1, or the precoding matrix in the third precoding matrix set is a combination of three items in the precoding matrix with a transmission layer number of 1 that meet the second condition.

[0313] Specifically, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of 2 ports or 6 ports; or, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of one antenna port group or three antenna port groups.

[0314] In some embodiments, the precoding matrix in the third precoding matrix set corresponds to the third antenna port power information of the terminal device; wherein the third antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the third antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0315] In some embodiments, the precoding matrices in the third precoding matrix set are divided into two groups; wherein,

[0316] In a precoding matrix group in the third precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group;

[0317] In another precoding matrix group in the third precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0318] For example, a precoding matrix in a precoding matrix group in the third precoding matrix set is composed of any three of the following items as precoding vectors (need to be multiplied by a power normalization coefficient):

[0319]

[0320] For example, the precoding matrix in a precoding matrix group in the third precoding matrix set is:

[0321] For example, the precoding matrix in another precoding matrix group in the third precoding matrix set is composed of any three of the following items as precoding vectors (need to be multiplied by a power normalization coefficient), and the positions of non-zero elements of any two vectors are different:

[0322]

[0323]

[0324] In some embodiments, the precoding matrix in the third precoding matrix set performs precoding vector power normalization, that is, the above precoding matrix is ​​multiplied by a power normalization coefficient, and the power normalization coefficient can be For example

[0325] In some embodiments, the at least one set of precoding matrices includes a fourth set of precoding matrices;

[0326] Among them, the number of transmission layers corresponding to the precoding matrices in the fourth precoding matrix set is 4 (that is, rank = 4), and the precoding matrices in the fourth precoding matrix set are a combination of any four precoding matrices with a transmission layer number of 1, or the precoding matrices in the fourth precoding matrix set are a combination of four items in the precoding matrices with a transmission layer number of 1 that satisfy the third condition.

[0327] Specifically, the third condition is that a precoding matrix with 4 transmission layers supports coherent transmission of 4 ports; or, the third condition is that a precoding matrix with 3 transmission layers supports coherent transmission of 2 antenna port groups.

[0328] In some embodiments, the precoding matrix in the fourth precoding matrix set corresponds to the fourth antenna port power information of the terminal device; wherein the fourth antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0329] In one embodiment, in the fourth precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability; or, the precoding matrix can support coherent transmission of 4 ports; or, the precoding matrix can support coherent transmission of 2 antenna port groups.

[0330] For example, the precoding matrix in the fourth precoding matrix set is composed of any four items as the following precoding vectors (need to be multiplied by a power normalization coefficient):

[0331]

[0332] For example, a precoding matrix in a precoding matrix group in the fourth precoding matrix set is:

[0333] Optionally, the precoding matrix in the fourth precoding matrix set performs precoding vector power normalization, that is, the precoding matrix is ​​multiplied by a power normalization coefficient, and the power normalization coefficient may be For example

[0334] In some embodiments, the at least one set of precoding matrices includes a fifth set of precoding matrices;

[0335] Among them, the number of transmission layers corresponding to the precoding matrix in the fifth precoding matrix set is 5 (that is, rank = 5), and the precoding matrix in the fifth precoding matrix set is a combination of any five precoding matrices with a transmission layer number of 1, or the precoding matrix in the fifth precoding matrix set is a combination of five items in the precoding matrix with a transmission layer number of 1 that meet the fourth condition.

[0336] Specifically, the fourth condition is that the precoding matrix with 5 transmission layers supports coherent transmission of 4 ports; or, the fourth condition is that the precoding matrix with 5 transmission layers supports coherent transmission of 2 antenna port groups.

[0337] In some embodiments, the precoding matrix in the fifth precoding matrix set corresponds to the fifth antenna port power information of the terminal device; wherein the fifth antenna port power information includes that the terminal device includes five coherent ports with half-power transmission capability.

[0338] In some embodiments, in the fifth precoding matrix set, the terminal device includes 5 coherent ports with half-power transmission capability; or, the precoding matrix can support coherent transmission of 4 ports; or, the precoding matrix can support coherent transmission of 2 antenna port groups.

[0339] For example, the precoding matrix in the fifth precoding matrix set is composed of any five of the following items as precoding vectors (need to be multiplied by a power normalization coefficient):

[0340]

[0341] For example, a precoding matrix in a precoding matrix group in the fifth precoding matrix set is:

[0342] In some embodiments, the precoding matrix in the fifth precoding matrix set performs precoding vector power normalization, that is, the precoding matrix is ​​multiplied by a power normalization coefficient, and the power normalization coefficient can be For example

[0343] In some embodiments, the at least one set of precoding matrices includes a sixth set of precoding matrices;

[0344] Among them, the number of transmission layers corresponding to the precoding matrix in the sixth precoding matrix set is 6 (that is, rank = 6), and the precoding matrix in the sixth precoding matrix set is a combination of any six precoding matrices with a transmission layer number of 1, or the precoding matrix in the sixth precoding matrix set is a combination of six items in the precoding matrix with a transmission layer number of 1 that meet the fifth condition.

[0345] Specifically, the fifth condition is that the precoding matrix with 6 transmission layers supports coherent transmission of 6 ports; or, the fifth condition is that the precoding matrix with 6 transmission layers supports coherent transmission of 3 antenna port groups.

[0346] In some embodiments, the precoding matrix in the sixth precoding matrix set corresponds to the sixth antenna port power information of the terminal device; wherein the sixth antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0347] In some embodiments, in the sixth precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability; or, the precoding matrix is ​​capable of supporting coherent transmission of 6 ports; or, the precoding matrix is ​​capable of supporting coherent transmission of 3 antenna port groups.

[0348] For example, the precoding matrix in the sixth precoding matrix set is composed of any six items as the following precoding vectors (need to be multiplied by a power normalization coefficient):

[0349]

[0350] For example, a precoding matrix in a precoding matrix group in the sixth precoding matrix set is:

[0351] In some embodiments, the precoding matrix in the sixth precoding matrix set performs precoding vector power normalization, that is, the precoding matrix is ​​multiplied by a power normalization coefficient, and the power normalization coefficient may be For example

[0352] In some embodiments, the at least one precoding matrix set includes a seventh precoding matrix set;

[0353] Among them, the number of transmission layers corresponding to the precoding matrices in the seventh precoding matrix set is 7 (i.e., rank = 7), and the precoding matrices in the seventh precoding matrix set are a combination of any seven precoding matrices with a transmission layer number of 1, or the precoding matrices in the seventh precoding matrix set are a combination of seven items in the precoding matrices with a transmission layer number of 1 that satisfy the sixth condition.

[0354] Specifically, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 6 ports; or, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 3 antenna port groups.

[0355] In some embodiments, the precoding matrix in the seventh precoding matrix set corresponds to the seventh antenna port power information of the terminal device; wherein the seventh antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0356] In some embodiments, in the seventh precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability; or, the precoding matrix is ​​capable of supporting coherent transmission of 6 ports; or, the precoding matrix is ​​capable of supporting coherent transmission of 3 antenna port groups.

[0357] For example, the precoding matrix in the seventh precoding matrix set is composed of any 7 items as the following precoding vectors (need to be multiplied by a power normalization coefficient):

[0358]

[0359] For example, the precoding matrix in a precoding matrix group in the seventh precoding matrix set is:

[0360] In some embodiments, the precoding matrix in the seventh precoding matrix set performs precoding vector power normalization, that is, the precoding matrix is ​​multiplied by a power normalization coefficient, and the power normalization coefficient can be For example

[0361] In some embodiments, the at least one set of precoding matrices includes an eighth set of precoding matrices;

[0362] The number of transmission layers corresponding to the precoding matrices in the eighth precoding matrix set is 1 (ie, rank=1), and the precoding matrices in the eighth precoding matrix set support coherent transmission of 4 antenna ports.

[0363] In some embodiments, in the eighth precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0364] In some embodiments, the at least one precoding matrix set includes a ninth precoding matrix set;

[0365] The number of transmission layers corresponding to the precoding matrices in the ninth precoding matrix set is 1 (ie, rank=1), and the precoding matrices in the ninth precoding matrix set support coherent transmission of 6 antenna ports.

[0366] In some embodiments, in the ninth precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0367] Therefore, in an embodiment of the present application, the terminal device can report precoding capability information to the network device, and the network device can instruct the terminal device to send PUSCH using the indicated TPMI based on the precoding capability information, thereby improving the performance of uplink transmission.

[0368] Combination of the above Figure 4 , describes in detail the method embodiment of the present application, and the following is combined with Figures 5 to 9 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0369] Figure 5 FIG. 3 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. Figure 5 As shown, the terminal device 300 includes:

[0370] The communication unit 310 is configured to obtain first information, where the first information is used to determine a precoding matrix for uplink information transmission;

[0371] A processing unit 320, configured to precode the uplink information using the precoding matrix;

[0372] The communication unit 310 is also used to send precoded uplink information;

[0373] The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information;

[0374] Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

[0375] In some embodiments, the codebook subset configuration information is determined based on the first capability information and the first antenna information;

[0376] The first capability information includes a codebook subset that the terminal device supports for partially coherent transmission;

[0377] The first antenna information is used to determine the antenna port group for partially coherent transmission.

[0378] In some embodiments, the first antenna information is predefined, or the first antenna information is determined based on antenna capability information reported by the terminal device.

[0379] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N1, where N1 is greater than or equal to 2, and N1 is less than 8. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0380] In some embodiments, when N1=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0381] Antenna port 1 and antenna port 3;

[0382] Antenna port 2 and antenna port 4;

[0383] Antenna port 5 and antenna port 7;

[0384] Antenna port 6 and antenna port 8;

[0385] Antenna port 1 and antenna port 2;

[0386] Antenna port 3 and antenna port 4;

[0387] Antenna port 5 and antenna port 6;

[0388] Antenna port 7 and antenna port 8.

[0389] In some embodiments, when N1=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0390] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0391] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0392] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0393] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0394] In some embodiments, when N1=6, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0395] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0396] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0397] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0398] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N2, where N2 is greater than or equal to 2, and N2 is less than 6. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6.

[0399] In some embodiments, when N2=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0400] Antenna port 1 and antenna port 3;

[0401] Antenna port 2 and antenna port 4;

[0402] Antenna port 5 and antenna port 6;

[0403] Antenna port 1 and antenna port 2;

[0404] Antenna port 3 and antenna port 5;

[0405] Antenna port 4 and antenna port 6.

[0406] In some embodiments, when N2=3, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0407] Antenna port 1, antenna port 2, and antenna port 3;

[0408] Antenna port 4, antenna port 5 and antenna port 6;

[0409] Antenna port 1, antenna port 3 and antenna port 5;

[0410] Antenna port 2, antenna port 4 and antenna port 6.

[0411] In some embodiments, when N2=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0412] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0413] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0414] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0415] In some embodiments, the first antenna information is determined based on the first antenna capability information reported by the terminal device; optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8;

[0416] The first antenna capability information is used to indicate one of the following: a first type antenna port group, a second type antenna port group, and a third type antenna port group;

[0417] Among them, the number of antenna ports for coherent transmission included in the first type antenna port group is 2, the number of antenna ports for coherent transmission included in the second type antenna port group is 4, and the number of antenna ports for coherent transmission included in the third type antenna port group is 6.

[0418] In some embodiments, when the first antenna capability information is used to indicate the first type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0419] Antenna port 1 and antenna port 3;

[0420] Antenna port 2 and antenna port 4;

[0421] Antenna port 5 and antenna port 7;

[0422] Antenna port 6 and antenna port 8;

[0423] Antenna port 1 and antenna port 2;

[0424] Antenna port 3 and antenna port 4;

[0425] Antenna port 5 and antenna port 6;

[0426] Antenna port 7 and antenna port 8.

[0427] In some embodiments, when the first antenna capability information is used to indicate the second type antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0428] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0429] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0430] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0431] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0432] In some embodiments, when the first antenna capability information is used to indicate the third type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0433] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0434] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0435] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0436] In some embodiments, the first antenna information is determined based on the second antenna capability information reported by the terminal device; optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6;

[0437] The second antenna capability information is used to indicate one of the following: a fourth type antenna port group, a fifth type antenna port group, and a sixth type antenna port group;

[0438] Among them, the number of antenna ports for coherent transmission included in the fourth type antenna port group is 2, the number of antenna ports for coherent transmission included in the fifth type antenna port group is 3, and the number of antenna ports for coherent transmission included in the sixth type antenna port group is 4.

[0439] In some embodiments, when the second antenna capability information is used to indicate the fourth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0440] Antenna port 1 and antenna port 3;

[0441] Antenna port 2 and antenna port 4;

[0442] Antenna port 5 and antenna port 6;

[0443] Antenna port 1 and antenna port 2;

[0444] Antenna port 3 and antenna port 5;

[0445] Antenna port 4 and antenna port 6.

[0446] In some embodiments, when the second antenna capability information is used to indicate the fifth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0447] Antenna port 1, antenna port 2, and antenna port 3;

[0448] Antenna port 4, antenna port 5 and antenna port 6;

[0449] Antenna port 1, antenna port 3 and antenna port 5;

[0450] Antenna port 2, antenna port 4 and antenna port 6.

[0451] In some embodiments, when the second antenna capability information is used to indicate the sixth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0452] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0453] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0454] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0455] In some embodiments, the first antenna information is determined based on third antenna capability information reported by the terminal device;

[0456] The third antenna capability information is used to indicate one of the following: a seventh type antenna port group, an eighth type antenna port group, a ninth type antenna port group, and a tenth type antenna port group;

[0457] Among them, the number of antenna ports for coherent transmission included in the seventh type of antenna port group is 2, the number of antenna ports for coherent transmission included in the eighth type of antenna port group is 3, the number of antenna ports for coherent transmission included in the ninth type of antenna port group is 4, and the number of antenna ports for coherent transmission included in the tenth type of antenna port group is 6.

[0458] In some embodiments, the antenna port index corresponds to an element index in each column of the precoding vector in the precoding matrix; and the element corresponding to the element index associated with the antenna port index is non-zero, and the elements corresponding to other element indexes are zero.

[0459] In some embodiments, before the terminal device acquires the first information, the communication unit 310 is further used to send precoding capability information; wherein,

[0460] The precoding capability information is used to indicate at least one transmit precoding matrix indication TPMI supported by the terminal device, and the precoding matrix corresponding to the at least one TPMI supports the terminal device to perform full-power transmission of a physical uplink shared channel PUSCH; or,

[0461] The precoding capability information is used to indicate the TPMI group supported by the terminal device, and the precoding matrix corresponding to the TPMI group supports the terminal device to perform full-power transmission of PUSCH.

[0462] In some embodiments, the communication unit 310 is further configured to receive second information;

[0463] The second information is determined based on the precoding capability information, and is used to instruct the terminal device to use the indicated TPMI to send PUSCH, and the precoding matrix corresponding to the indicated TPMI supports the terminal device to send PUSCH at full power.

[0464] In some embodiments, the precoding capability information is associated with the number of antenna ports and / or first antenna information of the terminal device, wherein the first antenna information is used to determine the antenna port group for partially coherent transmission; or,

[0465] The precoding capability information is related to the antenna port power information of the terminal device, wherein the antenna port power information is associated with the radio frequency or power amplifier of the terminal device.

[0466] In some embodiments, the at least one TPMI corresponds to one or more precoding matrices in a target precoding matrix set, or the TPMI group corresponds to one or more precoding matrices in a target precoding matrix set;

[0467] The precoding matrices in the target precoding matrix set belong to at least one precoding matrix set.

[0468] In some embodiments, the at least one set of precoding matrices comprises a first set of precoding matrices;

[0469] Among them, the number of transmission layers corresponding to the precoding matrices in the first precoding matrix set is 1, and the precoding matrices in the first precoding matrix set correspond to the first antenna port power information of the terminal device, and the first antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability.

[0470] In some embodiments, the at least one set of precoding matrices includes a second set of precoding matrices;

[0471] The number of transmission layers corresponding to the precoding matrix in the second precoding matrix set is 2, and the precoding matrix in the second precoding matrix set is a combination of any two precoding matrices with a transmission layer number of 1, or the precoding matrix in the second precoding matrix set is a combination of two items in the precoding matrix with a transmission layer number of 1 that satisfy the first condition;

[0472] Among them, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of 2 ports or 4 ports; or, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of one antenna port group or two antenna port groups.

[0473] In some embodiments, the precoding matrix in the second precoding matrix set corresponds to the second antenna port power information of the terminal device;

[0474] The second antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the second antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0475] In some embodiments, the precoding matrices in the second precoding matrix set are divided into two groups; wherein,

[0476] In a precoding matrix group in the second precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group;

[0477] In another precoding matrix group in the second precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0478] In some embodiments, the at least one set of precoding matrices includes a third set of precoding matrices;

[0479] The number of transmission layers corresponding to the precoding matrix in the third precoding matrix set is 3, and the precoding matrix in the third precoding matrix set is a combination of any three precoding matrices with a transmission layer number of 1, or the precoding matrix in the third precoding matrix set is a combination of three items in the precoding matrix with a transmission layer number of 1 that satisfy the second condition;

[0480] Among them, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of 2 ports or 6 ports; or, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of one antenna port group or three antenna port groups.

[0481] In some embodiments, the precoding matrix in the third precoding matrix set corresponds to the third antenna port power information of the terminal device;

[0482] The third antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the third antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0483] In some embodiments, the precoding matrices in the third precoding matrix set are divided into two groups; wherein,

[0484] In a precoding matrix group in the third precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group;

[0485] In another precoding matrix group in the third precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0486] In some embodiments, the at least one set of precoding matrices includes a fourth set of precoding matrices;

[0487] The number of transmission layers corresponding to the precoding matrix in the fourth precoding matrix set is 4, and the precoding matrix in the fourth precoding matrix set is a combination of any four precoding matrices with a transmission layer number of 1, or the precoding matrix in the fourth precoding matrix set is a combination of four items in the precoding matrix with a transmission layer number of 1 that satisfy the third condition;

[0488] The third condition is that a precoding matrix with 4 transmission layers supports coherent transmission of 4 ports; or, the third condition is that a precoding matrix with 3 transmission layers supports coherent transmission of 2 antenna port groups.

[0489] In some embodiments, the precoding matrix in the fourth precoding matrix set corresponds to the fourth antenna port power information of the terminal device;

[0490] The fourth antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0491] In some embodiments, the at least one set of precoding matrices includes a fifth set of precoding matrices;

[0492] The number of transmission layers corresponding to the precoding matrix in the fifth precoding matrix set is 5, and the precoding matrix in the fifth precoding matrix set is a combination of any five precoding matrices with a transmission layer number of 1, or the precoding matrix in the fifth precoding matrix set is a combination of five items in the precoding matrix with a transmission layer number of 1 that satisfy the fourth condition;

[0493] The fourth condition is that a precoding matrix with 5 transmission layers supports coherent transmission of 4 ports; or, the fourth condition is that a precoding matrix with 5 transmission layers supports coherent transmission of 2 antenna port groups.

[0494] In some embodiments, the precoding matrix in the fifth precoding matrix set corresponds to the fifth antenna port power information of the terminal device;

[0495] The fifth antenna port power information includes that the terminal device includes five coherent ports with half-power transmission capability.

[0496] In some embodiments, the at least one set of precoding matrices includes a sixth set of precoding matrices;

[0497] The number of transmission layers corresponding to the precoding matrix in the sixth precoding matrix set is 6, and the precoding matrix in the sixth precoding matrix set is a combination of any six precoding matrices with a transmission layer number of 1, or the precoding matrix in the sixth precoding matrix set is a combination of six items in the precoding matrix with a transmission layer number of 1 that satisfy the fifth condition;

[0498] The fifth condition is that a precoding matrix with 6 transmission layers supports coherent transmission of 6 ports; or, the fifth condition is that a precoding matrix with 6 transmission layers supports coherent transmission of 3 antenna port groups.

[0499] In some embodiments, the precoding matrix in the sixth precoding matrix set corresponds to the sixth antenna port power information of the terminal device;

[0500] The sixth antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0501] In some embodiments, the at least one precoding matrix set includes a seventh precoding matrix set;

[0502] The number of transmission layers corresponding to the precoding matrix in the seventh precoding matrix set is 7, and the precoding matrix in the seventh precoding matrix set is a combination of any seven precoding matrices with a transmission layer number of 1, or the precoding matrix in the seventh precoding matrix set is a combination of seven items in the precoding matrix with a transmission layer number of 1 that satisfy the sixth condition;

[0503] Among them, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 6 ports; or, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 3 antenna port groups.

[0504] In some embodiments, the precoding matrix in the seventh precoding matrix set corresponds to the seventh antenna port power information of the terminal device;

[0505] The seventh antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0506] In some embodiments, the at least one set of precoding matrices includes an eighth set of precoding matrices;

[0507] The number of transmission layers corresponding to the precoding matrices in the eighth precoding matrix set is 1, and the precoding matrices in the eighth precoding matrix set support coherent transmission of 4 antenna ports.

[0508] In some embodiments, in the eighth precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0509] In some embodiments, the at least one precoding matrix set includes a ninth precoding matrix set;

[0510] The number of transmission layers corresponding to the precoding matrices in the ninth precoding matrix set is 1, and the precoding matrices in the ninth precoding matrix set support coherent transmission of 6 antenna ports.

[0511] In some embodiments, in the ninth precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0512] In some embodiments, the uplink information includes at least one of the following:

[0513] Physical uplink shared channel PUSCH, sounding reference signal SRS.

[0514] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0515] It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 4 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0516] Figure 6 FIG. 4 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. Figure 6 As shown, the network device 400 includes:

[0517] The communication unit 410 is configured to send first information to a terminal device, where the first information is used to determine a precoding matrix for uplink information transmission;

[0518] The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information;

[0519] Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

[0520] In some embodiments, the network device 400 includes: a processing unit 420;

[0521] The communication unit 410 is further configured to receive first capability information sent by the terminal device, wherein the first capability information includes a codebook subset that the terminal device supports partially coherent transmission;

[0522] The processing unit 420 is used to determine the codebook subset configuration information according to the first capability information and the first antenna information, wherein the first antenna information is used to determine the antenna port group for partially coherent transmission.

[0523] In some embodiments, the first antenna information is predefined, or the first antenna information is determined based on antenna capability information reported by the terminal device.

[0524] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N1, where N1 is greater than or equal to 2, and N1 is less than 8. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0525] In some embodiments, when N1=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0526] Antenna port 1 and antenna port 3;

[0527] Antenna port 2 and antenna port 4;

[0528] Antenna port 5 and antenna port 7;

[0529] Antenna port 6 and antenna port 8;

[0530] Antenna port 1 and antenna port 2;

[0531] Antenna port 3 and antenna port 4;

[0532] Antenna port 5 and antenna port 6;

[0533] Antenna port 7 and antenna port 8.

[0534] In some embodiments, when N1=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0535] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0536] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0537] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0538] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0539] In some embodiments, when N1=6, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0540] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0541] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0542] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0543] In some embodiments, the number of antenna ports for coherent transmission of the terminal device is N2, where N2 is greater than or equal to 2, and N2 is less than 6. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 6.

[0544] In some embodiments, when N2=2, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0545] Antenna port 1 and antenna port 3;

[0546] Antenna port 2 and antenna port 4;

[0547] Antenna port 5 and antenna port 6;

[0548] Antenna port 1 and antenna port 2;

[0549] Antenna port 3 and antenna port 5;

[0550] Antenna port 4 and antenna port 6.

[0551] In some embodiments, when N2=3, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0552] Antenna port 1, antenna port 2, and antenna port 3;

[0553] Antenna port 4, antenna port 5 and antenna port 6;

[0554] Antenna port 1, antenna port 3 and antenna port 5;

[0555] Antenna port 2, antenna port 4 and antenna port 6.

[0556] In some embodiments, when N2=4, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0557] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0558] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0559] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0560] In some embodiments, the network device 400 includes: a processing unit 420;

[0561] The communication unit 410 is further used to receive first antenna capability information sent by the terminal device, where the first antenna capability information is used to indicate one of the following: a first type antenna port group, a second type antenna port group, and a third type antenna port group; wherein the number of antenna ports for coherent transmission included in the first type antenna port group is 2, the number of antenna ports for coherent transmission included in the second type antenna port group is 4, and the number of antenna ports for coherent transmission included in the third type antenna port group is 6;

[0562] The processing unit 420 is configured to determine the first antenna information according to the first antenna capability information. Optionally, in this case, the number of antenna ports used by the terminal device to send uplink information indicated by the antenna port number information is 8.

[0563] In some embodiments, when the first antenna capability information is used to indicate the first type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0564] Antenna port 1 and antenna port 3;

[0565] Antenna port 2 and antenna port 4;

[0566] Antenna port 5 and antenna port 7;

[0567] Antenna port 6 and antenna port 8;

[0568] Antenna port 1 and antenna port 2;

[0569] Antenna port 3 and antenna port 4;

[0570] Antenna port 5 and antenna port 6;

[0571] Antenna port 7 and antenna port 8.

[0572] In some embodiments, when the first antenna capability information is used to indicate the second type antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0573] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0574] Antenna port 5, antenna port 6, antenna port 7 and antenna port 8;

[0575] Antenna port 1, antenna port 3, antenna port 5 and antenna port 7;

[0576] Antenna port 2, antenna port 4, antenna port 6 and antenna port 8.

[0577] In some embodiments, when the first antenna capability information is used to indicate the third type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0578] Antenna port 1, antenna port 2, antenna port 3, antenna port 4, antenna port 5 and antenna port 6;

[0579] Antenna port 2, antenna port 3, antenna port 4, antenna port 5, antenna port 6 and antenna port 7;

[0580] Antenna port 3, antenna port 4, antenna port 5, antenna port 6, antenna port 7 and antenna port 8.

[0581] In some embodiments, the network device 400 includes: a processing unit 420;

[0582] The communication unit 410 is further used to receive second antenna capability information sent by the terminal device, where the second antenna capability information is used to indicate one of the following: a fourth type antenna port group, a fifth type antenna port group, and a sixth type antenna port group; wherein the number of antenna ports for coherent transmission included in the fourth type antenna port group is 2, the number of antenna ports for coherent transmission included in the fifth type antenna port group is 3, and the number of antenna ports for coherent transmission included in the sixth type antenna port group is 4;

[0583] When the number of antenna ports used by the terminal device to send the uplink information indicated by the antenna port number information is 6, the processing unit 420 is used to determine the first antenna information according to the second antenna capability information.

[0584] In some embodiments, when the second antenna capability information is used to indicate the fourth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0585] Antenna port 1 and antenna port 3;

[0586] Antenna port 2 and antenna port 4;

[0587] Antenna port 5 and antenna port 6;

[0588] Antenna port 1 and antenna port 2;

[0589] Antenna port 3 and antenna port 5;

[0590] Antenna port 4 and antenna port 6.

[0591] In some embodiments, when the second antenna capability information is used to indicate the fifth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0592] Antenna port 1, antenna port 2, and antenna port 3;

[0593] Antenna port 4, antenna port 5 and antenna port 6;

[0594] Antenna port 1, antenna port 3 and antenna port 5;

[0595] Antenna port 2, antenna port 4 and antenna port 6.

[0596] In some embodiments, when the second antenna capability information is used to indicate the sixth type of antenna port group, the antenna port index corresponding to the antenna port group for coherent transmission determined by the first antenna information includes one of the following:

[0597] Antenna port 1, antenna port 2, antenna port 3 and antenna port 4;

[0598] Antenna port 2, antenna port 3, antenna port 4 and antenna port 5;

[0599] Antenna port 3, antenna port 4, antenna port 5 and antenna port 6.

[0600] In some embodiments, the network device 400 includes: a processing unit 420;

[0601] The communication unit is further used to receive third antenna capability information sent by the terminal device, where the third antenna capability information is used to indicate one of the following: a seventh type antenna port group, an eighth type antenna port group, a ninth type antenna port group, and a tenth type antenna port group; wherein the number of antenna ports for coherent transmission included in the seventh type antenna port group is 2, the number of antenna ports for coherent transmission included in the eighth type antenna port group is 3, the number of antenna ports for coherent transmission included in the ninth type antenna port group is 4, and the number of antenna ports for coherent transmission included in the tenth type antenna port group is 6;

[0602] The processing unit 420 is configured to determine the first antenna information according to the third antenna capability information.

[0603] In some embodiments, the antenna port index corresponds to an element index in each column of the precoding vector in the precoding matrix; and the element corresponding to the element index associated with the antenna port index is non-zero, and the elements corresponding to other element indexes are zero.

[0604] In some embodiments, before the network device sends the first information, the communication unit 410 is further used to receive precoding capability information sent by the terminal device; wherein,

[0605] The precoding capability information is used to indicate at least one transmit precoding matrix indication TPMI supported by the terminal device, and the precoding matrix corresponding to the at least one TPMI supports the terminal device to perform full-power transmission of a physical uplink shared channel PUSCH; or,

[0606] The precoding capability information is used to indicate the TPMI group supported by the terminal device, and the precoding matrix corresponding to the TPMI group supports the terminal device to perform full-power transmission of PUSCH.

[0607] In some embodiments, the communication unit 410 is further configured to send second information to the terminal device;

[0608] The second information is determined based on the precoding capability information, and is used to instruct the terminal device to use the indicated TPMI to send PUSCH, and the precoding matrix corresponding to the indicated TPMI supports the terminal device to send PUSCH at full power.

[0609] In some embodiments, the precoding capability information is associated with the number of antenna ports and / or first antenna information of the terminal device, wherein the first antenna information is used to determine the antenna port group for partially coherent transmission; or,

[0610] The precoding capability information is related to the antenna port power information of the terminal device, wherein the antenna port power information is associated with the radio frequency or power amplifier of the terminal device.

[0611] In some embodiments, the at least one TPMI corresponds to one or more precoding matrices in a target precoding matrix set, or the TPMI group corresponds to one or more precoding matrices in a target precoding matrix set;

[0612] The precoding matrices in the target precoding matrix set belong to at least one precoding matrix set.

[0613] In some embodiments, the at least one set of precoding matrices comprises a first set of precoding matrices;

[0614] Among them, the number of transmission layers corresponding to the precoding matrices in the first precoding matrix set is 1, and the precoding matrices in the first precoding matrix set correspond to the first antenna port power information of the terminal device, and the first antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability.

[0615] In some embodiments, the at least one set of precoding matrices includes a second set of precoding matrices;

[0616] The number of transmission layers corresponding to the precoding matrix in the second precoding matrix set is 2, and the precoding matrix in the second precoding matrix set is a combination of any two precoding matrices with a transmission layer number of 1, or the precoding matrix in the second precoding matrix set is a combination of two items in the precoding matrix with a transmission layer number of 1 that satisfy the first condition;

[0617] Among them, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of 2 ports or 4 ports; or, the first condition is that the precoding matrix with a transmission layer number of 2 supports coherent transmission of one antenna port group or two antenna port groups.

[0618] In some embodiments, the precoding matrix in the second precoding matrix set corresponds to the second antenna port power information of the terminal device;

[0619] The second antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the second antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0620] In some embodiments, the precoding matrices in the second precoding matrix set are divided into two groups; wherein,

[0621] In a precoding matrix group in the second precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group;

[0622] In another precoding matrix group in the second precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0623] In some embodiments, the at least one set of precoding matrices includes a third set of precoding matrices;

[0624] The number of transmission layers corresponding to the precoding matrix in the third precoding matrix set is 3, and the precoding matrix in the third precoding matrix set is a combination of any three precoding matrices with a transmission layer number of 1, or the precoding matrix in the third precoding matrix set is a combination of three items in the precoding matrix with a transmission layer number of 1 that satisfy the second condition;

[0625] Among them, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of 2 ports or 6 ports; or, the second condition is that the precoding matrix with 3 transmission layers supports coherent transmission of one antenna port group or three antenna port groups.

[0626] In some embodiments, the precoding matrix in the third precoding matrix set corresponds to the third antenna port power information of the terminal device;

[0627] The third antenna port power information includes that the terminal device includes two coherent ports with half-power transmission capability, or the third antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0628] In some embodiments, the precoding matrices in the third precoding matrix set are divided into two groups; wherein,

[0629] In a precoding matrix group in the third precoding matrix set, the terminal device includes 2 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 2 ports, or the precoding matrix supports coherent transmission of 1 antenna port group;

[0630] In another precoding matrix group in the third precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0631] In some embodiments, the at least one set of precoding matrices includes a fourth set of precoding matrices;

[0632] The number of transmission layers corresponding to the precoding matrix in the fourth precoding matrix set is 4, and the precoding matrix in the fourth precoding matrix set is a combination of any four precoding matrices with a transmission layer number of 1, or the precoding matrix in the fourth precoding matrix set is a combination of four items in the precoding matrix with a transmission layer number of 1 that satisfy the third condition;

[0633] The third condition is that a precoding matrix with 4 transmission layers supports coherent transmission of 4 ports; or, the third condition is that a precoding matrix with 3 transmission layers supports coherent transmission of 2 antenna port groups.

[0634] In some embodiments, the precoding matrix in the fourth precoding matrix set corresponds to the fourth antenna port power information of the terminal device;

[0635] The fourth antenna port power information includes that the terminal device includes four coherent ports with half-power transmission capability.

[0636] In some embodiments, the at least one set of precoding matrices includes a fifth set of precoding matrices;

[0637] The number of transmission layers corresponding to the precoding matrix in the fifth precoding matrix set is 5, and the precoding matrix in the fifth precoding matrix set is a combination of any five precoding matrices with a transmission layer number of 1, or the precoding matrix in the fifth precoding matrix set is a combination of five items in the precoding matrix with a transmission layer number of 1 that satisfy the fourth condition;

[0638] The fourth condition is that a precoding matrix with 5 transmission layers supports coherent transmission of 4 ports; or, the fourth condition is that a precoding matrix with 5 transmission layers supports coherent transmission of 2 antenna port groups.

[0639] In some embodiments, the precoding matrix in the fifth precoding matrix set corresponds to the fifth antenna port power information of the terminal device;

[0640] The fifth antenna port power information includes that the terminal device includes five coherent ports with half-power transmission capability.

[0641] In some embodiments, the at least one set of precoding matrices includes a sixth set of precoding matrices;

[0642] The number of transmission layers corresponding to the precoding matrix in the sixth precoding matrix set is 6, and the precoding matrix in the sixth precoding matrix set is a combination of any six precoding matrices with a transmission layer number of 1, or the precoding matrix in the sixth precoding matrix set is a combination of six items in the precoding matrix with a transmission layer number of 1 that satisfy the fifth condition;

[0643] The fifth condition is that a precoding matrix with 6 transmission layers supports coherent transmission of 6 ports; or, the fifth condition is that a precoding matrix with 6 transmission layers supports coherent transmission of 3 antenna port groups.

[0644] In some embodiments, the precoding matrix in the sixth precoding matrix set corresponds to the sixth antenna port power information of the terminal device;

[0645] The sixth antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0646] In some embodiments, the at least one precoding matrix set includes a seventh precoding matrix set;

[0647] The number of transmission layers corresponding to the precoding matrix in the seventh precoding matrix set is 7, and the precoding matrix in the seventh precoding matrix set is a combination of any seven precoding matrices with a transmission layer number of 1, or the precoding matrix in the seventh precoding matrix set is a combination of seven items in the precoding matrix with a transmission layer number of 1 that satisfy the sixth condition;

[0648] Among them, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 6 ports; or, the sixth condition is that the precoding matrix with 7 transmission layers supports coherent transmission of 3 antenna port groups.

[0649] In some embodiments, the precoding matrix in the seventh precoding matrix set corresponds to the seventh antenna port power information of the terminal device;

[0650] The seventh antenna port power information includes that the terminal device includes six coherent ports with half-power transmission capability.

[0651] In some embodiments, the at least one set of precoding matrices includes an eighth set of precoding matrices;

[0652] The number of transmission layers corresponding to the precoding matrices in the eighth precoding matrix set is 1, and the precoding matrices in the eighth precoding matrix set support coherent transmission of 4 antenna ports.

[0653] In some embodiments, in the eighth precoding matrix set, the terminal device includes 4 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 4 ports, or the precoding matrix supports coherent transmission of 2 antenna port groups.

[0654] In some embodiments, the at least one precoding matrix set includes a ninth precoding matrix set;

[0655] The number of transmission layers corresponding to the precoding matrices in the ninth precoding matrix set is 1, and the precoding matrices in the ninth precoding matrix set support coherent transmission of 6 antenna ports.

[0656] In some embodiments, in the ninth precoding matrix set, the terminal device includes 6 coherent ports with half-power transmission capability, or the precoding matrix supports coherent transmission of 6 ports, or the precoding matrix supports coherent transmission of 3 antenna port groups.

[0657] In some embodiments, the uplink information includes at least one of the following:

[0658] Physical uplink shared channel PUSCH, sounding reference signal SRS.

[0659] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0660] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 400 are respectively to implement Figure 4 For the sake of brevity, the corresponding processes of the network device in the method 200 are not described in detail here.

[0661] Figure 7 It is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. Figure 7 The communication device 500 shown includes a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0662] In some embodiments, Figure 7 As shown, the communication device 500 may further include a memory 520. The processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0663] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0664] In some embodiments, Figure 7 As shown, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0665] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of the antennas may be one or more.

[0666] In some embodiments, the communication device 500 may specifically be a network device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0667] In some embodiments, the communication device 500 may specifically be a terminal device of an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0668] Figure 8 It is a schematic structural diagram of the device of an embodiment of the present application. Figure 8 The device 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0669] In some embodiments, Figure 8 As shown, the apparatus 600 may further include a memory 620. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0670] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0671] In some embodiments, the apparatus 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0672] In some embodiments, the apparatus 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0673] In some embodiments, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0674] In some embodiments, the apparatus can be applied to the terminal device in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the terminal device in the various methods in the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0675] In some embodiments, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0676] Fig. 9 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. Fig. 9 As shown, the communication system 700 includes a terminal device 710 and a network device 720 .

[0677] Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0678] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0679] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0680] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0681] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0682] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0683] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0684] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0685] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0686] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0687] The embodiment of the present application also provides a computer program.

[0688] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0689] In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0690] 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.

[0691] 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.

[0692] 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.

[0693] 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 needs to achieve the purpose of the solution of this embodiment.

[0694] 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.

[0695] 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. In view of such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0696] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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

1. A wireless communication method, characterized in that: include: The terminal device obtains first information, where the first information is used to determine a precoding matrix for uplink information transmission; The terminal device precodes the uplink information using the precoding matrix; The terminal device sends precoded uplink information; The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information; Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

2. The method according to claim 1, characterized in that The codebook subset configuration information is associated with the first capability information and the first antenna information; The first capability information includes a codebook subset for which the terminal device supports partially coherent transmission; The first antenna information is used to determine the antenna port group for partially coherent transmission.

3. The method according to claim 2, characterized in that The first antenna information is predefined, or the first antenna information is determined based on antenna capability information reported by the terminal device.

4. The method according to claim 2 or 3, characterized in that The number of antenna ports for coherent transmission of the terminal device is N1, where N1 is greater than or equal to 2 and N1 is less than 8.

5. The method according to claim 1, characterized in that The antenna selection codebook includes at least one of the following: Index 0: And, index 1:

6. The method according to claim 1, characterized in that The phase selection codebook includes at least one of the following: Index 0: [1 1 1 1]T, index 1: [1 1j]T, index 2: [1 1-1-1]T, index 3: [1 1-jj]T, index 4: [11]T, index 5: [1j-1]T, index 6: [1-1-j]T, index 7: [1-j1]T, index 8: [1-1 1-1]T, index 9: [1-1-j]T, index 10: [1-1-1 1]T, index 11: [1-1-jj]T, index 12: [1-j1-j]T, index 13: [1-j1]T, index 14: [1-j-1]T, and index 15: [1-jj-1]T.

7. The method according to claim 1, characterized in that The antenna selection codebook includes at least one of the following: Index 0: And, index 1:

8. The method according to claim 1, characterized in that The phase selection codebook includes at least one of the following: Index 0: Index 1: Index 2: Index 3: Index 4: Index 5: Index 6: And, index 7:

9. The method according to claim 1, characterized in that The antenna selection codebook includes at least one of the following: Index 0: And, index 1:

10. The method according to claim 1, characterized in that The phase selection codebook includes at least one of the following: Index 0: And, index 1:

11. A wireless communication method, characterized in that: include: The network device sends first information to the terminal device, where the first information is used to determine a precoding matrix for uplink information transmission; The first information is determined according to at least one of the following: codebook subset configuration information, antenna port number information, the maximum number of transmission layers of the uplink information, the waveform used for uplink transmission, the first indication information, the second indication information and the third indication information; Among them, the codebook subset configuration information is used to indicate the codebook subset to which the precoding matrix belongs, the antenna port number information is used to indicate the number of antenna ports used by the terminal device to send the uplink information, the number of antenna ports is greater than 4, and the number of antenna ports is a multiple of 2, the first indication information is used to indicate the precoding matrix index, the second indication information is used to indicate the antenna selection codebook, and the third indication information is used to indicate the phase selection codebook.

12. The method according to claim 11, characterized in that The method further comprises: The network device receives first capability information sent by the terminal device, wherein the first capability information includes a codebook subset supported by the terminal device for partially coherent transmission; The network device determines the codebook subset configuration information according to the first capability information and first antenna information, wherein the first antenna information is used to determine an antenna port group for partially coherent transmission.

13. The method according to claim 12, characterized in that The first antenna information is predefined, or the first antenna information is determined based on antenna capability information reported by the terminal device.

14. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 10.

15. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 11 to 13.

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