Channel State Information Report Acquisition Method and Communication Device

Abstract

The present application provides a channel state information (CSI) report acquisition method and a communication device. The method includes: receiving network information; and acquiring a CSI report based on the network information, where the CSI report includes a CSI measurement result under the assumption of coherent joint transmission of one or more stations. The method provided in the present application enables a terminal device to acquire a CSI report under the assumption of coherent joint transmission of one or more stations.

Description

Technical Field

[0001] The present invention relates to the field of communications, and more particularly to a method for obtaining channel state information reports and a communication device.

Background Art

[0002] Currently, in the new radio (NR) R15 / R16 system, the channel state information (CSI) report includes two parts. The payload size of the first part is fixed, and the first part can be used to determine the number of information bits in the second part. However, one CSI report only includes the CSI measurement results under the assumption of the transmission of one station. Therefore, under the assumption of coherent joint transmission of one or more stations, how to obtain the CSI report is an issue that needs to be urgently solved.

Summary of the Invention

[0003] This application provides a CSI report acquisition method and a communication device that enable a terminal device to obtain a CSI report under the assumption of coherent joint transmission of one or more stations.

[0004] In a first aspect, this application provides a method for obtaining a channel state information (CSI) report. This method includes: receiving network information; and obtaining a CSI report based on the network information, where the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0005] Based on the method described in the first aspect, network information is received, and then a CSI report is obtained based on the network information. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations. Therefore, by this method, the terminal device can obtain a CSI report under the assumption of coherent joint transmission of one or more stations.

[0006] In one possible embodiment, the network information includes codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report.

[0007] In one possible embodiment, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the stations.

[0008] In one possible embodiment, the network information includes a first parameter, and the first parameter is used to determine the codebook type.

[0009] In one possible embodiment, the first parameter includes a quantity threshold of stations.

[0010] In one possible embodiment, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the stations. This method is If the number of stations included in the CSI report is greater than the quantity threshold, further determining that the codebook type in the CSI report is the first codebook type.

[0011] In one possible embodiment, this method If the number of stations included in the CSI report is less than or equal to the quantity threshold, further determining that the codebook type in the CSI report is the second codebook type.

[0012] In one possible embodiment, the CSI report includes first information and second information.

[0013] In one possible embodiment, the first information includes at least one of the number information of stations, the number information of non-zero wideband amplitude coefficients, and the reference resource index indication information.

[0014] In one possible embodiment, the second information includes all or part of the CSI measurement results of the stations.

[0015] In one possible embodiment, the reference resource index indication information is obtained through a bitmap.

[0016] In one possible embodiment, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency domain codebook information of each station is the same or different.

[0017] In one possible embodiment, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0018] In one possible embodiment, the CSI measurement result of one station corresponds to a set of information.

[0019] In one possible embodiment, the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0020] In one possible embodiment, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0021] In one possible embodiment, the first set of information among the i sets includes the spatial domain codebook information of each station.

[0022] In one possible embodiment, for the sets of information other than the first set among the i sets of information, part / all of the CSI measurement results of one station correspond to a set of information.

[0023] In one possible embodiment, part / all of the CSI measurement results of the station include at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0024] In one possible embodiment, the second information includes i sets of information, The x-th set of information among the i sets of information includes at least one of the frequency domain codebook information of each station and the non-zero coefficient reference positions of each station, where x is a positive integer, The y-th set of information among the i sets of information includes the spatial domain codebook information of each station, where y is a positive integer, The z-th set of information among the i sets of information includes the non-zero coefficient information of each station, where z is a positive integer.

[0025] In one possible embodiment, the second information includes i sets of information, where i = j + 2 and j is the number of stations included in the CSI report.

[0026] In one possible embodiment, the first set of information among the i sets includes spatial domain codebook information of each station.

[0027] In one possible embodiment, the second set of information among the i sets includes at least one of frequency domain codebook information of each station and reference amplitude information of each station.

[0028] In one possible embodiment, the frequency domain codebook information of each station is the same.

[0029] In one possible embodiment, for the set of information excluding the first set of information and the second set of information among the i sets, part / all of the CSI measurement results of one station correspond to one set of information.

[0030] In one possible embodiment, part / all of the CSI measurement results of a station include at least one of reference amplitude information of non-zero coefficients of the station and non-zero coefficient information of the station.

[0031] In one possible embodiment, the i sets of information are arranged according to priority.

[0032] In one possible embodiment, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0033] In a second aspect, the present application provides a method for obtaining a channel state information (CSI) report. This method includes Obtaining a CSI report, where the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations, and Determining a channel state based on the CSI report.

[0034] Based on the method described in the second aspect, obtain a CSI report, and then determine the channel state based on the CSI report. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations. Therefore, by this method, the channel state can be determined through the CSI report under the assumption of coherent joint transmission of one or more stations.

[0035] In one possible embodiment, the CSI report includes first information and second information.

[0036] In one possible embodiment, the first information includes at least one of the number of stations information, the number of non-zero wideband amplitude coefficient information, and the reference resource index indication information.

[0037] In one possible embodiment, the second information includes all or part of the CSI measurement results of the stations.

[0038] In one possible embodiment, the reference resource index indication information is obtained through a bitmap.

[0039] In one possible embodiment, the second information includes at least one of the spatial domain codebook information of each station included in the CSI report, the frequency domain codebook information of each station included in the CSI report, and the non-zero coefficient information of each station included in the CSI report, and the frequency domain codebook information of each station is the same or different.

[0040] In one possible embodiment, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0041] In one possible embodiment, the CSI measurement result of one station corresponds to one set of information.

[0042] In one possible embodiment, the CSI measurement result of a station includes at least one of the reference amplitude information of non-zero coefficients, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0043] In one possible embodiment, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0044] In one possible embodiment, the first set of information among the i sets of information includes the spatial domain codebook information of each station.

[0045] In one possible embodiment, for the sets of information other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0046] In one possible embodiment, part / all of the CSI measurement result of a station includes at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0047] In one possible embodiment, the second information includes i sets of information, The information of the x-th set among the i sets of information includes at least one item of the frequency domain codebook information of each station and the reference position of the non-zero coefficients of each station, where x is a positive integer, The information of the y-th set among the i sets of information includes the spatial domain codebook information of each station, where y is a positive integer, The information of the z-th set among the i sets of information includes the non-zero coefficient information of each station, where z is a positive integer.

[0048] In one possible embodiment, the second information includes i sets of information, where i = j + 2 and j is the number of stations included in the CSI report.

[0049] In one possible embodiment, the information of the first set among the i sets includes the spatial domain codebook information of each station.

[0050] In one possible embodiment, the information of the second set among the i sets includes at least one item of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0051] In one possible embodiment, the frequency domain codebook information of each station is the same.

[0052] In one possible embodiment, for the information of the sets other than the first set and the second set among the i sets, part / all of the CSI measurement results of one station correspond to the information of one set.

[0053] In one possible embodiment, part / all of the CSI measurement results of a station include at least one item of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0054] In one possible embodiment, the i sets of information are arranged according to priority.

[0055] In one possible embodiment, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0056] In a third aspect, the present application provides a communication device. This communication device includes units for implementing the methods described in any one of the possible embodiments of the first aspect and this aspect, or any one of the possible embodiments of the second aspect and this aspect.

[0057] In a fourth aspect, the present application provides a communication device. This communication device includes a processor. The processor is configured to execute the methods described in any one of the possible embodiments of the first aspect and this aspect, or any one of the possible embodiments of the second aspect and this aspect.

[0058] In a fifth aspect, the present application provides a communication device. This communication device includes a processor and a memory. The memory is configured to store computer-executable instructions, and the processor is configured to call program code from the memory to execute the methods described in any one of the possible embodiments of the first aspect and this aspect, or any one of the possible embodiments of the second aspect and this aspect.

[0059] In a sixth aspect, the present application provides a communication device. This communication device includes a processor and a transceiver. The transceiver is configured to receive or transmit signals, and the processor is configured to execute the methods described in any one of the possible embodiments of the first aspect and this aspect, or any one of the possible embodiments of the second aspect and this aspect.

[0060] In a seventh aspect, the present application provides a communication device. The communication device includes a processor, a memory, and a transceiver. The transceiver is configured to receive or transmit signals, the memory is configured to store program code, and the processor is configured to call the program code from the memory to execute the method described in any one of the possible embodiments of the first aspect and this aspect, or any one of the possible embodiments of the second aspect and this aspect.

[0061] In an eighth aspect, the present application provides a chip. The chip is configured to receive network information, The chip is configured to obtain a CSI report based on the network information, and the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0062] In a ninth aspect, the present application provides a chip. The chip is configured to obtain a CSI report, the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations, The chip is configured to determine a channel state based on the CSI report.

[0063] In a tenth aspect, the present application provides a module device. The module device includes a communication module, a power supply module, a memory module, and a chip module. The power supply module is configured to provide electrical energy to the module device, The memory module is configured to store data and instructions, The communication module is configured to perform communication inside the module device, or configured to perform communication between the module device and an external device, The chip module is triggered to cause the communication module to receive network information, and is configured to obtain a CSI report based on the network information, where the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0064] In an eleventh aspect, the present application provides a module device. The module device includes a communication module, a power supply module, a memory module, and a chip module. The power supply module is configured to provide electrical energy to the module device. The memory module is configured to store data and instructions. The communication module is configured to perform communication inside the module device, or is configured to enable communication between the module device and an external device. The chip module is triggered to cause the communication module to obtain a CSI report, and is configured to determine a channel state based on the CSI report, where the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0065] In a twelfth aspect, the present application provides a computer-readable storage medium. Computer-readable instructions are stored in the computer storage medium, and when the computer-readable instructions are executed in a communication device, the method described in the first aspect and any one possible implementation of this aspect, or the second aspect and any one possible implementation of this aspect, is caused to be executed by the communication device.

[0066] In a thirteenth aspect, the present application provides a computer program or a computer program product. The computer program or the computer program product includes code or instructions. When the code or instructions are executed on a computer, the computer is caused to execute the methods described in the first aspect and any one possible embodiment of this aspect, or the second aspect and any one possible embodiment of this aspect.

Brief Description of Drawings

[0067] Hereinafter, in order to more clearly explain the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0068] Hereinafter, with reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the present invention.

[0069] The terms used in the following embodiments of this application are for the sole purpose of explaining specific embodiments and are not intended to limit this application. As used in the specification and claims of this application, the singular expressions "one", "a kind", "the", "the above", "this", and "this one" are intended to include plural expressions as well, unless the context clearly indicates the contrary. Also, as can be understood, the term "and / or" used in this application means any one or all possible combinations including one or more of the listed items.

[0070] Note that the terms "first", "second", "third", etc. in the specification, claims, and the above drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. As can be understood, the data used in this way are interchangeable with each other under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than that illustrated or described in this specification. Also, the term "including" and any variations thereof are intended to cover and not exclude the inclusion of other components. For example, a process, method, system, product, or server including a series of steps or units is not limited to the clearly listed steps or units and can include steps or units not clearly listed, or other steps or units inherent to these processes, methods, products, or devices.

[0071] First, for the convenience of those skilled in the art, some of the terms related to the embodiments of this application will be explained.

[0072] 1. Terminal device:

[0073] The terminal device in the embodiments of this application is a device with a wireless communication function, and can be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal device, in-vehicle terminal device, industrial control terminal device, UE unit, UE station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent or UE device, etc. The terminal device may be fixed or movable. Note that the terminal device can support at least one wireless communication technology such as Long Term Evolution (LTE), New Radio (NR), etc.For example, the terminal device may be a mobile phone, a pad, a desktop computer, a notebook computer, an all-in-one computer, an in-vehicle terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with a wireless communication function, a computing device or another processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal device in a future evolved public land mobile network (PLMN). In some embodiments of the present application, the terminal device may be a device having a transceiver function, for example, a chip system. The chip system may include a chip and may also include other discrete components, but is not limited thereto in the embodiments of the present application.

[0074] 2. Network device:

[0075] The network device in the embodiments of this application is a device that provides a wireless communication function to a terminal device, and may also be referred to as a radio access network (RAN) device, an access network element, etc. The network device can support at least one wireless communication technology such as LTE, NR, etc. Exemplarily, the network device includes, but is not limited to, a next generation node B (gNB), an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved node B, HeNB, or a home node B, HNB), a baseband unit (BBU), a mobile switching center (MSC), etc. in the 5th-generation mobile communication system (5G). Also, the network device may be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. Alternatively, the network device may be a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, a network device in future mobile communications, or a network device in a future evolved PLMN, etc. In some embodiments, the network device may be a device that can provide a wireless communication function to a terminal device, for example, a chip system. Exemplarily, the chip system can include a chip and can also include other discrete components.In some embodiments, the network device can communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0076] In the embodiments of this application, the station can refer to a remote radio head (RRH) or a transmission and reception point (TRP), but is not limited thereto.

[0077] 3. Channel state information:

[0078] A channel state information (CSI) report is for a terminal device to feedback the quality of a downlink channel to a network device so that the network device can select an appropriate modulation and coding scheme (MCS) for downlink data transmission and reduce the block error rate (BLER) of downlink data transmission. Usually, a CSI report consists of one or more of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), an SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), and a layer 1 reference signal received power (L1-RSRP), and the time-domain and frequency-domain resources required for transmission are controlled by the network device. The CSI report can be reported through a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0079] One CSI report in New Radio R15 / R16 contains two parts. The payload size of the first part is fixed, and the first part can be used to determine the number of information bits in the second part. One CSI report contains only the CSI measurement results under the assumption of the transmission of one station. Specifically, it is as follows. (1) CSI feedback of Type 1 (Type I): The first part includes RI, CRI, and the CQI of the first codeword, and the second part includes PMI and the CQI of the second codeword when RI is greater than 4. (2) CSI feedback of Type 2 (Type II): The first part includes RI, CQI, and an indication of the number of non-zero wideband amplitude coefficients of each layer, and the second part includes PMI. (3) Enhanced CSI feedback of Type 2 (Enhanced Type II): The first part includes RI, CQI, and an indication of the total number of non-zero amplitude coefficients of all layers, and the second part includes PMI.

[0080] In addition, the coherent joint transmission of multiple transmit-receive points can be understood as the coherent joint transmission of multiple TRPs or RRHs, or different data belonging to the same physical downlink shared channel (PDSCH) being transmitted from different TRPs to the terminal device, or multiple TRPs or RRHs being virtualized with one TRP or RRH for transmission. Names with the same meaning defined in other standards can also be applied to this application, that is, this application does not limit the names of these parameters.

[0081] The embodiments of this application can be applied to the network architecture shown in FIG. 1. The network architecture shown in FIG. 1 is the network architecture of a wireless communication system. Usually, this network architecture includes a terminal device and a network device. The number and form of each device do not limit the embodiments of this application. The network device is a base station (BS), and the base station can provide communication services for multiple terminal devices, and multiple base stations can also provide communication services for the same terminal device.

[0082] In the NR R15 / R16 system, one CSI report only includes CSI measurement results under the assumption of the transmission of one station. Therefore, under the assumption of coherent joint transmission of one or more stations, how to obtain the CSI report is an issue that needs to be resolved urgently.

[0083] Under the assumption of coherent joint transmission of one or more stations, the embodiments of the present application provide a CSI report acquisition method so that the terminal device can obtain the CSI report. To better understand the CSI report acquisition method provided in the embodiments of the present application, the CSI report acquisition method will be described in detail below.

[0084] Please refer to FIG. 2. FIG. 2 is a flowchart of the CSI report acquisition method according to the embodiment of the present application. The CSI report acquisition method includes steps 201 to 204. The operating entity of the method shown in FIG. 2 may be a terminal device (exemplarily, refer to FIG. 1), or a chip in the terminal device. The operating entity of the method shown in FIG. 2 takes the terminal device as an example. This method includes the following steps, but is not limited thereto.

[0085] 201. The terminal device receives network information.

[0086] In an embodiment of the present application, the terminal device receives network information transmitted by a network device, and then, based on the network information, the terminal device can obtain a CSI report under the assumption of coherent joint transmission of one or more stations. The station can refer to an RRH or a TRP, and is not limited herein. Optionally, the network information can include codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report, or the codebook type indication information is used to indicate the codebook type of the codebook in the CSI report.

[0087] In one possible embodiment, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining a frequency domain codebook of each station among one or more stations, and the second codebook type is used to indicate that one or more stations jointly obtain a frequency domain codebook of the stations. Regarding the first codebook type, the frequency domain codebook of each station is obtained independently by each station, that is, the frequency domain codebooks of each station can be different. Regarding the second codebook type, the frequency domain codebook of each station is jointly obtained by all stations, that is, all stations use a collective method to determine the frequency domain codebook, and the frequency domain codebook information of all stations uses this frequency domain codebook.

[0088] In one possible embodiment, the network information includes a first parameter, and the first parameter is used to determine the codebook type. Optionally, the first parameter includes a quantity threshold of stations. The quantity threshold of stations can be set by the network device.

[0089] Optionally, this method further includes that when the number of stations included in the CSI report is greater than the quantitative threshold, the terminal device determines that the codebook type in the CSI report is the first codebook type.

[0090] Optionally, this method further includes that when the number of stations included in the CSI report is less than or equal to the quantitative threshold, the terminal device determines that the codebook type in the CSI report is the second codebook type.

[0091] Exemplarily, the quantitative threshold of the stations is 6, and the number of stations included in the CSI report is 7. In this case, since the number of stations included in the CSI report is greater than the quantitative threshold, the terminal device determines that the codebook type in the CSI report is the first codebook type. That is, the frequency domain codebook corresponding to the stations included in the CSI report is obtained independently by each station.

[0092] In another example, the quantitative threshold of the stations is 6, and the number of stations included in the CSI report is 5. In this case, since the number of stations included in the CSI report is less than the quantitative threshold, the terminal device determines that the codebook type in the CSI report is the second codebook type. That is, the frequency domain codebook corresponding to the stations included in the CSI report is obtained jointly by all stations.

[0093] Optionally, this method further includes that when the number of stations included in the CSI report is greater than the quantitative threshold, the terminal device determines that the codebook type in the CSI report is the second codebook type.

[0094] Optionally, when the number of stations included in the CSI report is less than or equal to a quantity threshold, this method further includes that the terminal device determines that the codebook type in the CSI report is the first codebook type.

[0095] 202. The terminal device obtains a CSI report based on network information, and the CSI report includes CSI measurement results under the assumption of coherent co - transmission of one or more stations.

[0096] In the embodiments of this application, under the assumption of coherent co - transmission of one or more stations, the terminal device can determine the codebook type in the CSI report based on the codebook type indication information included in the network information, thereby obtaining the CSI report. This method is advantageous for the terminal device to obtain the CSI report under the assumption of coherent co - transmission of one or more stations.

[0097] In one possible embodiment, the CSI report includes first information and second information. Optionally, the first information includes at least one of the number of stations information, the number of non - zero broadband amplitude coefficient information, and the reference resource index indication information. Optionally, the second information includes all or part of the CSI measurement results of the stations.

[0098] The payload size of the first information is fixed, and the first information can be used to determine the number of information bits in the second information. The first information may be CSI part 1, and the second information may be CSI part 2. This application does not limit the naming method of the first information and the second information.

[0099] Note that the number information of the stations can be directly obtained or indirectly obtained through other information, but is not limited thereto. Exemplarily, the number of stations can be determined through the number of reference resource indexes and / or the reference resource index code points. Also, the number information of the non-zero coefficients of the stations may be the number information of the non-zero coefficients corresponding to each station among the stations included in the CSI report, or may be the number information of the non-zero coefficients of all the stations included in the CSI report. The number information of the non-zero coefficients may be an indication of the number of non-zero broadband amplitude coefficients of each layer, or may be an indication of the total number of non-zero amplitude coefficients of all layers. Note that the description of the number information of the non-zero coefficients in the following text is the same as the description of the number information of the non-zero coefficients here, and thus is omitted.

[0100] Optionally, the reference resource index indication information is obtained through a bitmap.

[0101] In one possible embodiment, the second information includes the PMI.

[0102] In one possible embodiment, the second information includes at least one of the spatial domain codebook information of each station included in the CSI report, the frequency domain codebook information of each station included in the CSI report, the non-zero coefficient information of each station included in the CSI report, the non-zero coefficient information, the reference amplitude information of each layer of each station included in the CSI report, the indication of the strongest coefficient (index of the strongest coefficient) of each layer of each station included in the CSI report, the reference amplitude information of each layer of all stations included in the CSI report, and the indication of the strongest coefficient of each layer of all stations included in the CSI report. Optionally, the frequency domain codebook information of each station may be the same or different. Optionally, all stations share the reference amplitude information of each layer that is the same. Optionally, all stations share the indication of the strongest coefficient of each layer that is the same.

[0103] The non-zero coefficient information may be the position information of the element corresponding to the non-zero amplitude coefficient, the amplitude information of the element corresponding to the non-zero amplitude coefficient, or the phase information of the element corresponding to the non-zero amplitude coefficient. The frequency domain codebook information may be an index indicating the frequency domain codebook. The spatial domain codebook information may be an index indicating the spatial domain codebook. The indication of the strongest coefficient may be the position information of the element corresponding to the strongest coefficient. Note that the following description of the non-zero coefficient information, the frequency domain codebook information, and the indication of the strongest coefficient is the same as the description here for the non-zero coefficient information, the frequency domain codebook information, and the indication of the strongest coefficient, so it is omitted.

[0104] In one possible embodiment, the second information includes i sets of information, where the value of i is the number of stations included in the CSI report. Optionally, when the codebook type indicated by the codebook type information included in the network information is the first codebook type, the terminal device can use this method to separate the second information of the CSI report.

[0105] Optionally, the CSI measurement result of one station corresponds to one set of information. Specifically, which set of information to carry the CSI measurement result of which station is determined by the terminal device based on its own measurement method.

[0106] Exemplarily, the number of stations included in the CSI report is 3, and the second information includes 3 sets of information. The first set of information corresponds to the CSI measurement result of the first station, the second set of information corresponds to the CSI measurement result of the third station, and the third set of information corresponds to the CSI measurement result of the second station.

[0107] Further optionally, the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients, spatial domain codebook information, frequency domain codebook information, non-zero coefficient information, reference signal resource indication index or reference signal resource indication index code point, indication of the strongest coefficient. Note that the reference amplitude information of non-zero coefficients includes the reference amplitude of non-zero coefficients of each layer. The non-zero coefficient information includes the non-zero coefficient information of each layer. The indication of the strongest coefficient includes the indication of the strongest coefficient of each layer.

[0108] In one possible embodiment, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report. Optionally, when the codebook type indicated by the codebook type information included in the network information is the second codebook type, the terminal device can use this method to separate the second information of the CSI report.

[0109] Optionally, the information of the first set among the i sets includes the spatial region codebook information of each station.

[0110] Optionally, for the information of the sets other than the first set among the information of the i sets, part / all of the CSI measurement results of one station correspond to the information of one set.

[0111] Exemplarily, the number of stations included in the CSI report is 3, and the second information includes information of 4 sets. The information of the first set includes the spatial region codebook information of each station, the information of the second set corresponds to the CSI measurement result of the first station, the information of the third set corresponds to the CSI measurement result of the third station, and the information of the fourth set corresponds to the CSI measurement result of the second station.

[0112] Optionally further, part / all of the CSI measurement results of the station include at least one of the reference amplitude information of non-zero coefficients, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index or the reference signal resource indication index code point, and the indication of the strongest coefficient. Note that the reference amplitude information of non-zero coefficients includes the reference amplitude of non-zero coefficients of each layer. The non-zero coefficient information includes the non-zero coefficient information of each layer. The indication of the strongest coefficient includes the indication of the strongest coefficient of each layer.

[0113] In one possible embodiment, the second information includes information of i sets, and the information of the x-th set among the information of the i sets includes at least one of the frequency domain codebook information of each station and the reference amplitude information of non-zero coefficients of each station, where x is a positive integer. The information of the y-th set among the information of the i sets includes the spatial region codebook information of each station, where y is a positive integer. The information of the z-th set among the information of the i sets includes the non-zero coefficient information of each station, where z is a positive integer.

[0114] Exemplarily, x is 1, y is 2, and z is 3. The second information includes three sets of information. The first set of information includes at least one of the frequency domain codebook information of each station, the reference amplitude information of the non-zero coefficients of each station, and the indication of the strongest coefficient. The second set of information includes the spatial domain codebook information of each station. The third set of information includes the non-zero coefficient information of each station.

[0115] As another example, x is 1, y is 2, and z is 3. The second information includes three sets of information. The first set of information includes the spatial domain codebook information of each station. The second set of information includes at least one of the frequency domain codebook information of each station, the reference amplitude information of the non-zero coefficients of each station, and the indication of the strongest coefficient. The third set of information includes the non-zero coefficient information of each station.

[0116] Optionally, the priority orders of the x-th set of information, the y-th set of information, and the z-th set of information are the same as the order obtained by arranging the values of x, y, and z in ascending order.

[0117] Exemplarily, x is 1, y is 2, and z is 3. The priority order of the first set of information is higher than that of the second set of information, and the priority order of the second set of information is higher than that of the third set of information.

[0118] Optionally, the frequency domain codebook information of each station is the same. Optionally, when the codebook type indicated by the codebook type information included in the network information is the second codebook type, the terminal device can separate the second information of the CSI report using this method. Note that the reference amplitude information of the non-zero coefficients includes the reference amplitudes of the non-zero coefficients of each layer. The non-zero coefficient information includes the non-zero coefficient information of each layer. The indication of the strongest coefficient includes the indication of the strongest coefficient of each layer.

[0119] In one possible embodiment, the second information includes i sets of information, where i = j + 2 and j is the number of stations included in the CSI report. Optionally, when the codebook type indicated by the codebook type information included in the network information is the second codebook type, the terminal device can use this method to separate the second information of the CSI report.

[0120] Optionally, the first set of information among the i sets includes the spatial domain codebook information of each station.

[0121] Optionally, the second set of information among the i sets includes at least one of the frequency domain codebook information of each station, the reference amplitude information of each station, and the indication of the strongest coefficient of each station. Further optionally, the frequency domain codebook information of each station is the same.

[0122] Optionally, for the information of the sets other than the first set and the second set among the i sets, some / all of the CSI measurement results of one station correspond to the information of one set.

[0123] Exemplarily, the number of stations included in the CSI report is 3, and the second information includes 5 sets of information. The first set of information includes the spatial domain codebook information of each station. The second set of information includes the frequency domain codebook information of each station and the reference amplitude information of each station. The third set of information corresponds to all or part of the CSI measurement results of the first station. The fourth set of information corresponds to all or part of the CSI measurement results of the third station. The fifth set of information corresponds to all or part of the CSI measurement results of the second station.

[0124] Further optionally, some / all of the CSI measurement results of the station include at least one of the reference amplitude information of the non-zero coefficients of the station, the non-zero coefficient information of the station, and the indication of the strongest coefficient of the station.

[0125] In one possible embodiment, the i-th set of information is arranged according to priority. The terminal device can determine the priority based on the position of each set of information in the CSI report. The earlier the position, the higher the priority. That is, the smaller the value of i, the higher the priority of the i-th set. For example, the priority of the information in the third set is higher than that of the information in the fourth set.

[0126] In one possible embodiment, the CSI report further includes codebook type information. The terminal device can position the codebook type information included in the network information in the CSI report so as to indicate the codebook type in the CSI report.

[0127] 203. The terminal device transmits the CSI report to the network device.

[0128] 204. The network device determines the channel state based on the CSI report.

[0129] The following will be described using a specific example.

[0130] Exemplarily, the terminal device receives network information. The network information includes codebook type indication information, and the codebook type indicated by the codebook type indication information is the first codebook type. The CSI report obtained by the terminal device is divided as follows.

[0131] This CSI report includes three stations: the first station, the second station, and the third station. The CSI report is divided into first information and second information. The first information includes the number information of stations, the number information of non-zero coefficients of stations, and the reference resource index indication information. The second information includes the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report. The frequency domain codebook information of each station can be different. The codebook type indicated by the codebook type indication information is the first codebook type. The terminal device is such that the CSI measurement result of one station corresponds to a set of information, that is, the second information includes three sets of information. The first set of information corresponds to the CSI measurement result of the first station, the second set of information corresponds to the CSI measurement result of the third station, and the third set of information corresponds to the CSI measurement result of the second station. Thus, the second information can be divided in this way. Therefore, the terminal device obtains a CSI report, and this CSI report includes the CSI measurement results under the assumption of coherent joint transmission of three stations. Then, the terminal device transmits the CSI report to the network device, and the network device can determine the channel state based on the CSI report.

[0132] In the method described in FIG. 2, the terminal device receives network information and then obtains a CSI report based on the network information. The CSI report includes the CSI measurement results under the assumption of coherent joint transmission of one or more stations. The terminal device transmits the CSI report to the network device, and the network device determines the channel state based on the CSI report. Therefore, based on the method described in FIG. 2, the terminal device can obtain a CSI report under the assumption of coherent joint transmission of one or more stations.

[0133] Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application. This device may be a terminal device, a device within a terminal device, or a device that can be used in combination with a terminal device. The communication device 30 shown in FIG. 3 may include a processing unit 301 and a communication unit 302. The processing unit 301 is used for data processing. The communication unit 302 integrates a receiving unit and a transmitting unit. The communication unit 302 may also be called a transceiver unit. Alternatively, the communication unit 302 may be divided into a receiving unit and a transmitting unit. Since the following processing unit 301 and communication unit 302 are the same, the description thereof will be omitted.

[0134] The communication unit 302 is configured to receive network information.

[0135] The processing unit 301 is configured to obtain a CSI report based on the network information. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0136] Optionally, the network information includes codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report.

[0137] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the stations.

[0138] Optionally, the network information includes a first parameter, and the first parameter is used to determine the codebook type.

[0139] Optionally, the first parameter includes a quantity threshold of stations.

[0140] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining a frequency domain codebook for each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining a frequency domain codebook of stations. The processing unit 301 is further configured to determine that the codebook type in the CSI report is the first codebook type when the number of stations included in the CSI report is greater than the quantity threshold.

[0141] Optionally, the processing unit 301 is further configured to determine that the codebook type in the CSI report is the second codebook type when the number of stations included in the CSI report is less than or equal to the quantity threshold.

[0142] Optionally, the CSI report includes first information and second information.

[0143] Optionally, the first information includes at least one of the number information of stations, the number information of non-zero broadband amplitude coefficients, and the reference resource index indication information.

[0144] Optionally, the second information includes all or part of the CSI measurement results of stations.

[0145] Optionally, the reference resource index indication information is obtained through a bitmap.

[0146] Optionally, the second information includes at least one of the spatial region codebook information of each station among the stations included in the CSI report, the frequency region codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency region codebook information of each station is the same or different.

[0147] Optionally, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0148] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0149] Optionally, the CSI measurement result of a station includes at least one of the reference amplitude information of non-zero coefficients, the spatial region codebook information, the frequency region codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0150] Optionally, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0151] Optionally, the first set of information among the i sets of information includes the spatial region codebook information of each station.

[0152] Optionally, for the sets of information other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0153] Optionally, part / all of the CSI measurement result of a station includes at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency region codebook information of the station, and the non-zero coefficient information of the station.

[0154] Optionally, the second information includes information of group i. The information of the x-th group among the information of group i includes at least one item of the frequency domain codebook information of each station and the non-zero coefficient reference position of each station, where x is a positive integer. The information of the y-th group among the information of group i includes the spatial domain codebook information of each station, where y is a positive integer. The information of the z-th group among the information of group i includes the non-zero coefficient information of each station, where z is a positive integer.

[0155] Optionally, the second information includes information of group i, where i = j + 2 and j is the number of stations included in the CSI report.

[0156] Optionally, the information of the first group among group i includes the spatial domain codebook information of each station.

[0157] Optionally, the information of the second group among group i includes at least one item of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0158] Optionally, the frequency domain codebook information of each station is the same.

[0159] Optionally, for the information of the groups other than the information of the first group and the second group among group i, a part / all of the CSI measurement results of one station corresponds to the information of one group.

[0160] Optionally, a part / all of the CSI measurement results of the station includes at least one item of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0161] Optionally, the information of group i is arranged according to the priority.

[0162] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0163] The above communication device may be, for example, a chip or a chip module. Each module included in each device and product described in the above embodiments may be a software module, or a hardware module, or part may be a software module and part may be a hardware module. For example, for each device and product applied to or integrated into a chip, each module included therein can be realized in the form of hardware such as a circuit, or at least a part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the chip, and the remaining modules (if any) can be realized in the form of hardware such as a circuit. For each device and product applied to or integrated into a chip module, each module included therein can be realized in the form of hardware such as a circuit, different modules can be located in the same component (such as a chip, a circuit module, etc.) of the chip module or different components of the chip module, or at least a part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the chip module, and the remaining modules (if any) can be realized in the form of hardware such as a circuit. For each device and product applied to or integrated into a terminal, each module included therein can be realized in the form of hardware such as a circuit, different modules can be located in the same component (such as a chip, a circuit module, etc.) inside the terminal or different components inside the terminal, or at least a part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the terminal, and the remaining modules (if any) can be realized in the form of hardware such as a circuit.

[0164] Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application. This device may be a terminal device, a device within a terminal device, or a device that can be used in combination with a terminal device. The communication device 30 shown in FIG. 3 can include a processing unit 301 and a communication unit 302. The processing unit 301 is used for data processing. The communication unit 302 integrates a receiving unit and a transmitting unit. The communication unit 302 may also be called a transceiver unit. Alternatively, the communication unit 302 may be divided into a receiving unit and a transmitting unit. Since the following processing unit 301 and communication unit 302 are the same, the description is omitted.

[0165] The communication unit 302 is configured to obtain a CSI report. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0166] The processing unit 301 is configured to determine the channel state based on the CSI report.

[0167] Optionally, the CSI report includes first information and second information.

[0168] Optionally, the first information includes at least one of the number information of stations, the number information of non-zero broadband amplitude coefficients, and the reference resource index indication information.

[0169] Optionally, the second information includes all or part of the CSI measurement results of the stations.

[0170] Optionally, the reference resource index indication information is obtained through a bitmap.

[0171] Optionally, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency domain codebook information of each station may be the same or different.

[0172] Optionally, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0173] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0174] Optionally, the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0175] Optionally, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0176] Optionally, the first set of information among the i sets of information includes the spatial domain codebook information of each station.

[0177] Optionally, for the sets of information other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0178] Optionally, part / all of the CSI measurement result of the station includes at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0179] Optionally, the second information includes the information of group i. The information of the x-th group among the information of group i includes at least one item of the frequency domain codebook information of each station and the non-zero coefficient reference position of each station, where x is a positive integer. The information of the y-th group among the information of group i includes the spatial domain codebook information of each station, where y is a positive integer. The information of the z-th group among the information of group i includes the non-zero coefficient information of each station, where z is a positive integer.

[0180] Optionally, the second information includes the information of group i, where i = j + 2 and j is the number of stations included in the CSI report.

[0181] Optionally, the information of the first group among group i includes the spatial domain codebook information of each station.

[0182] Optionally, the information of the second group among group i includes at least one item of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0183] Optionally, the frequency domain codebook information of each station is the same.

[0184] Optionally, for the information of the groups other than the information of the first group and the second group among group i, a part / all of the CSI measurement results of one station corresponds to the information of one group.

[0185] Optionally, a part / all of the CSI measurement results of the station includes at least one item of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0186] Optionally, the information of group i is arranged according to the priority.

[0187] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0188] The communication device described above may be, for example, a chip or a chip module. Each module included in each device and product described in the above embodiments may be a software module, or a hardware module, or part may be a software module and part may be a hardware module. For example, for each device and product applied to or integrated into a chip, each module included therein can be realized in the form of hardware such as a circuit, or at least part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the chip, and the remaining modules (if any) can be realized in the form of hardware such as a circuit. For each device and product applied to or integrated into a chip module, each module included therein can be realized in the form of hardware such as a circuit, different modules can be located in the same component (such as a chip, a circuit module, etc.) of the chip module or different components of the chip module, or at least part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the chip module, and the remaining modules (if any) can be realized in the form of hardware such as a circuit. For each device and product applied to or integrated into a terminal, each module included therein can be realized in the form of hardware such as a circuit, different modules can be located in the same component (such as a chip, a circuit module, etc.) inside the terminal or different components inside the terminal, or at least part of the module can be realized in the form of a software program, and this software program is executed in a processor integrated inside the terminal, and the remaining modules (if any) can be realized in the form of hardware such as a circuit.

[0189] Shown in FIG. 4 is another communication device 40 according to an embodiment of the present application. The communication device 40 is configured to implement the functions of the terminal device in FIG. 2. This device may be a terminal device or a device used in a terminal device. The device used in a terminal device may be a chip system or a chip within the terminal device. The chip system may consist of a chip or may include a chip and other discrete components.

[0190] The communication device 40 includes at least one processor 420. The processor 420 is configured to implement the data processing function of the terminal device in the method according to an embodiment of the present application. The communication device 40 may also include a communication interface 410. The communication interface 410 is configured to implement the transmission and reception operations of the terminal device in the method according to an embodiment of the present application. In an embodiment of the present application, the communication interface may be a transceiver, a circuit, a bus, a module, or another type of communication interface, and is configured to communicate with other devices via a transmission medium. For example, the communication interface 410 is configured to enable the device within the communication device 40 to communicate with other devices. The processor 420 is configured to transmit and receive data through the communication interface 410 and implement the method described in FIG. 2 of the above method embodiment.

[0191] The communication device 40 can further include at least one memory 430. The memory 430 is configured to store program instructions and / or data. The memory 430 and the processor 420 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may have an electrical, mechanical, or other form and is used for information interaction between devices, units, or modules. The processor 420 can operate jointly with the memory 430. The processor 420 can execute the program instructions stored in the memory 430. At least one of the at least one memory may be included in the processor.

[0192] When the power of the communication device 40 is turned on, the processor 420 can read the software program in the memory 430, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to transmit data wirelessly, the processor 420 performs baseband processing on the data waiting to be transmitted, and then outputs the baseband signal to a radio frequency circuit (not shown). The radio frequency circuit performs radio frequency processing on the baseband signal, and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device 40, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 420. The processor 420 converts the baseband signal into data and processes the data.

[0193] In another embodiment, the radio frequency circuit and the antenna can be arranged independently of the processor 420 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and the antenna can be remotely arranged independently of the communication device.

[0194] The embodiments of this application do not limit the specific connection medium between the communication interface 410, the processor 420, and the memory 430. In FIG. 4 of the embodiments of this application, the memory 430, the processor 420, and the communication interface 410 are connected by a bus 440. The bus is shown as a thick line in FIG. 4. The connection methods between other components are merely schematically described and are not limited thereto. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of easy expression, only one thick line is used in FIG. 4, but this does not mean that there is only one bus or only one type of bus.

[0195] When the communication device 40 is applied to a terminal device, for example, when the communication device 40 is specifically a chip or a chip system, what is transmitted or received by the communication interface 410 can be a baseband signal. When the communication device 40 is specifically a terminal device, what is transmitted or received by the communication interface 410 can be a radio frequency signal. In the embodiments of this application, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gates, or transistor logic devices, discrete hardware components, and can implement or execute each method, operation, and logical block diagram disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any ordinary processor, etc. The operations of the methods disclosed in the embodiments of this application can be directly executed and completed by a hardware processor, or can also be executed and completed by a combination of hardware modules and software modules in the processor.

[0196] Note that this communication device can execute the relevant steps of the terminal device or the access network device in the foregoing method embodiments. For details, reference is made to the embodiments provided by each of the above steps, and the description will not be repeated.

[0197] For each device and product applied to or integrated in a communication device, each module included therein can be implemented in the form of hardware such as a circuit, and different modules can be located in the same component (e.g., chip, circuit module, etc.) within the terminal or different components within the terminal, or at least a part of the module can be implemented in the form of a software program, and this software program is executed in a processor integrated within the terminal, and the remaining modules (if any) can be implemented in the form of hardware such as a circuit.

[0198] The embodiments of the present application also provide a chip including a processor and a communication interface. The processor is configured to receive network information and obtain a CSI report based on the network information. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0199] Optionally, the network information includes codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report.

[0200] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining a frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining a frequency domain codebook of a station.

[0201] Optionally, the network information includes a first parameter, and the first parameter is used to determine the codebook type.

[0202] Optionally, the first parameter includes a quantity threshold of stations.

[0203] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of a station. The chip is further configured to determine that the codebook type in the CSI report is the first codebook type when the number of stations included in the CSI report is greater than a quantity threshold.

[0204] Optionally, the chip is further configured to determine that the codebook type in the CSI report is the second codebook type when the number of stations included in the CSI report is less than or equal to the quantity threshold.

[0205] Optionally, the CSI report includes first information and second information.

[0206] Optionally, the first information includes at least one of the number information of stations, the number information of non-zero broadband amplitude coefficients, and the reference resource index indication information.

[0207] Optionally, the second information includes all or part of the CSI measurement results of stations.

[0208] Optionally, the reference resource index indication information is obtained through a bitmap.

[0209] Optionally, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report. The frequency domain codebook information of each station may be the same or different.

[0210] Optionally, the second information includes i sets of information, where the value of i is the number of stations included in the CSI report.

[0211] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0212] Optionally, the CSI measurement result of the station includes at least one of the following: reference amplitude information of non-zero coefficients, spatial domain codebook information, frequency domain codebook information, non-zero coefficient information, reference signal resource indication index, or reference signal resource indication index code point.

[0213] Optionally, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0214] Optionally, the first set of information among the i sets includes the spatial domain codebook information of each station.

[0215] Optionally, for the sets of information other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0216] Optionally, part / all of the CSI measurement result of the station includes at least one of the following: reference amplitude information of non-zero coefficients of the station, frequency domain codebook information of the station, non-zero coefficient information of the station.

[0217] Optionally, the second information includes i sets of information. The x-th set of information among the i sets of information includes at least one of the frequency domain codebook information of each station and the non-zero coefficient reference positions of each station, where x is a positive integer. The y-th set of information among the i sets of information includes the spatial domain codebook information of each station, where y is a positive integer. The z-th set of information among the i sets of information includes the non-zero coefficient information of each station, where z is a positive integer.

[0218] Optionally, the second information includes information of group i, where i = j + 2 and j is the number of stations included in the CSI report.

[0219] Optionally, the information of the first group among the groups i includes the spatial domain codebook information of each station.

[0220] Optionally, the information of the second group among the groups i includes at least one of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0221] Optionally, the frequency domain codebook information of each station is the same.

[0222] Optionally, for the information of the groups excluding the information of the first group and the second group among the groups i, part / all of the CSI measurement results of one station correspond to the information of one group.

[0223] Optionally, part / all of the CSI measurement results of the station include at least one of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0224] Optionally, the information of group i is arranged according to the priority.

[0225] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0226] In one possible embodiment, the chip includes at least one processor, at least one first memory, and at least one second memory. The at least one first memory and the at least one processor are interconnected through a circuit, and instructions are stored in the first memory. The at least one second memory and the at least one processor are interconnected through a circuit, and data that needs to be stored in the foregoing method embodiments is stored in the second memory.

[0227] For each device and product applied to or integrated into the chip, each module included therein can be implemented in the form of hardware such as a circuit, or at least a part of the module is implemented in the form of a software program, and this software program is executed in a processor integrated inside the chip, and the remaining modules (if any) can be implemented in the form of hardware such as a circuit.

[0228] The embodiments of the present application also provide a chip including a processor and a communication interface. The processor is configured to obtain a CSI report and determine a channel state based on the CSI report. The CSI report includes CSI measurement results under the assumption of coherent co-transmission of one or more stations.

[0229] Optionally, the CSI report includes first information and second information.

[0230] Optionally, the first information includes at least one item of the number information of the stations, the number information of the non-zero broadband amplitude coefficients, and the reference resource index indication information.

[0231] Optionally, the second information includes all or part of the CSI measurement results of the stations.

[0232] Optionally, the reference resource index indication information is obtained through a bitmap.

[0233] Optionally, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency domain codebook information of each station may be the same or different.

[0234] Optionally, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0235] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0236] Optionally, the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0237] Optionally, the second information includes i sets of information, i = j + 1, and j is the number of stations included in the CSI report.

[0238] Optionally, the first set of information among the i sets of information includes the spatial domain codebook information of each station.

[0239] Optionally, for the information of the sets other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0240] Optionally, part / all of the CSI measurement result of the station includes at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0241] Optionally, the second information includes the information of group i. The information of the x-th group among the information of group i includes at least one item of the frequency domain codebook information of each station and the reference position of the non-zero coefficients of each station, where x is a positive integer. The information of the y-th group among the information of group i includes the spatial domain codebook information of each station, where y is a positive integer. The information of the z-th group among the information of group i includes the non-zero coefficient information of each station, where z is a positive integer.

[0242] Optionally, the second information includes the information of group i, where i = j + 2 and j is the number of stations included in the CSI report.

[0243] Optionally, the information of the first group among the groups of i includes the spatial domain codebook information of each station.

[0244] Optionally, the information of the second group among the groups of i includes at least one item of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0245] Optionally, the frequency domain codebook information of each station is the same.

[0246] Optionally, for the information of the groups excluding the information of the first group and the second group among the groups of i, a part / all of the CSI measurement results of one station corresponds to the information of one group.

[0247] Optionally, a part / all of the CSI measurement results of the station includes at least one item of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0248] Optionally, the information of group i is arranged according to the priority.

[0249] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0250] In one possible embodiment, the chip includes at least one processor, at least one first memory, and at least one second memory. The at least one first memory and the at least one processor are interconnected through a circuit, and instructions are stored in the first memory. The at least one second memory and the at least one processor are interconnected through a circuit, and data that needs to be stored in the foregoing method embodiments is stored in the second memory.

[0251] For each device and product applied to or integrated into the chip, each module included therein can be implemented in the form of hardware such as a circuit, or at least a part of the module is implemented in the form of a software program, and this software program is executed in a processor integrated inside the chip, and the remaining modules (if any) can be implemented in the form of hardware such as a circuit.

[0252] As shown in FIG. 5, FIG. 5 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 50 can execute the related steps of the terminal device in the foregoing method embodiments. The module device 50 includes a communication module 501, a power module 502, a storage module 503, and a chip module 504.

[0253] Among them, the power module 502 is configured to provide electrical energy to the module device, the storage module 503 is configured to store data and instructions, the communication module 501 is configured to perform communication inside the module device, or is configured to perform communication between the module device and an external device. The chip module 504 is configured to receive network information and obtain a CSI report based on the network information. The CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations.

[0254] Optionally, the network information includes codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report.

[0255] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the station.

[0256] Optionally, the network information includes a first parameter, and the first parameter is used to determine the codebook type.

[0257] Optionally, the first parameter includes a quantity threshold of stations.

[0258] Optionally, the codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining the frequency domain codebook of each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the station. The chip module 504 is further configured to determine that the codebook type in the CSI report is the first codebook type when the number of stations included in the CSI report is greater than the quantity threshold.

[0259] Optionally, the chip module 504 is further configured to determine that the codebook type in the CSI report is the second codebook type when the number of stations included in the CSI report is less than or equal to the quantity threshold.

[0260] Optionally, the CSI report includes first information and second information.

[0261] Optionally, the first information includes at least one of the number of stations information, the number of non-zero broadband amplitude coefficient information, and the reference resource index indication information.

[0262] Optionally, the second information includes all or part of the CSI measurement results of the stations.

[0263] Optionally, the reference resource index indication information is obtained through a bitmap.

[0264] Optionally, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency domain codebook information of each station is the same or different.

[0265] Optionally, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0266] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0267] Optionally, the CSI measurement result of the station includes at least one of the reference amplitude information of the non-zero coefficient, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index or the reference signal resource indication index code point.

[0268] Optionally, the second information includes i sets of information, i = j + 1, and j is the number of stations included in the CSI report.

[0269] Optionally, the information of the first set among the i sets includes the spatial region codebook information of each station.

[0270] Optionally, for the information of the sets other than the first set among the i sets of information, part / all of the CSI measurement results of one station correspond to the information of one set.

[0271] Optionally, part / all of the CSI measurement results of a station include at least one of the reference amplitude information of the non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0272] Optionally, the second information includes the i sets of information. The information of the x-th set among the i sets of information includes at least one of the frequency domain codebook information of each station and the reference position of the non-zero coefficients of each station, where x is a positive integer. The information of the y-th set among the i sets of information includes the spatial region codebook information of each station, where y is a positive integer. The information of the z-th set among the i sets of information includes the non-zero coefficient information of each station, where z is a positive integer.

[0273] Optionally, the second information includes the i sets of information, where i = j + 2 and j is the number of stations included in the CSI report.

[0274] Optionally, the information of the first set among the i sets includes the spatial region codebook information of each station.

[0275] Optionally, the information of the second set among the i sets includes at least one of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0276] Optionally, the frequency domain codebook information of each station is the same.

[0277] Optionally, for the information of the sets other than the first set and the second set among the i sets, part / all of the CSI measurement results of one station correspond to the information of one set.

[0278] Optionally, some / all of the CSI measurement results of the station include at least one of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0279] Optionally, the information of the i-th group is arranged according to the priority.

[0280] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0281] For each device and product applied to or integrated into the chip module, each module included therein can be realized in the form of hardware such as a circuit. Different modules can be located in the same component (such as a chip, a circuit module, etc.) of the chip module or different components of the chip module. Or at least a part of the module is realized in the form of a software program, and this software program is executed in a processor integrated inside the chip module, and the remaining modules (if any) can be realized in the form of hardware such as a circuit.

[0282] The embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored. When the instructions are executed in a processor, the method flow of the above method embodiment is realized.

[0283] As shown in FIG. 5, FIG. 5 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 50 can execute the related steps of the terminal device in the foregoing method embodiment. The module device 50 includes a communication module 501, a power module 502, a storage module 503, and a chip module 504.

[0284] Among them, the power supply module 502 is configured to provide electrical energy to the module device, the memory module 503 is configured to store data and instructions, the communication module 501 is configured to perform communication inside the module device, or the module device and an external device are configured to perform communication. The chip module 504 is configured to obtain a CSI report and determine a channel state based on the CSI report. The CSI report includes CSI measurement results under the assumption of coherent co-transmission of one or more stations.

[0285] Optionally, the CSI report includes first information and second information.

[0286] Optionally, the first information includes at least one of the number information of stations, the number information of non-zero broadband amplitude coefficients, and the reference resource index indication information.

[0287] Optionally, the second information includes all or part of the CSI measurement results of the stations.

[0288] Optionally, the reference resource index indication information is obtained through a bitmap.

[0289] Optionally, the second information includes at least one of the spatial domain codebook information of each station among the stations included in the CSI report, the frequency domain codebook information of each station among the stations included in the CSI report, and the non-zero coefficient information of each station among the stations included in the CSI report, and the frequency domain codebook information of each station is the same or different.

[0290] Optionally, the second information includes i sets of information, and the value of i is the number of stations included in the CSI report.

[0291] Optionally, the CSI measurement result of one station corresponds to one set of information.

[0292] Optionally, the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients, the spatial domain codebook information, the frequency domain codebook information, the non-zero coefficient information, the reference signal resource indication index, or the reference signal resource indication index code point.

[0293] Optionally, the second information includes i sets of information, where i = j + 1 and j is the number of stations included in the CSI report.

[0294] Optionally, the information of the first set among the i sets includes the spatial domain codebook information of each station.

[0295] Optionally, for the information of the sets other than the first set among the i sets of information, part / all of the CSI measurement result of one station corresponds to one set of information.

[0296] Optionally, part / all of the CSI measurement result of the station includes at least one of the reference amplitude information of non-zero coefficients of the station, the frequency domain codebook information of the station, and the non-zero coefficient information of the station.

[0297] Optionally, the second information includes i sets of information. The information of the x-th set among the i sets of information includes at least one of the frequency domain codebook information of each station and the reference positions of non-zero coefficients of each station, where x is a positive integer. The information of the y-th set among the i sets of information includes the spatial domain codebook information of each station, where y is a positive integer. The information of the z-th set among the i sets of information includes the non-zero coefficient information of each station, where z is a positive integer.

[0298] Optionally, the second information includes i sets of information, where i = j + 2 and j is the number of stations included in the CSI report.

[0299] Optionally, the information of the first set among the i sets includes the spatial domain codebook information of each station.

[0300] Optionally, the information of the second set among the i sets includes at least one of the frequency domain codebook information of each station and the reference amplitude information of each station.

[0301] Optionally, the frequency domain codebook information of each station is the same.

[0302] Optionally, for the information of the sets excluding the information of the first set and the second set among the i sets, a part / all of the CSI measurement results of one station correspond to the information of one set.

[0303] Optionally, a part / all of the CSI measurement results of the station include at least one of the reference amplitude information of the non-zero coefficients of the station and the non-zero coefficient information of the station.

[0304] Optionally, the information of the i sets is arranged according to the priority.

[0305] Optionally, the CSI report further includes codebook type information, and the codebook type information is used to indicate the codebook type in the CSI report.

[0306] For each device and product applied to or integrated into the chip module, each module included therein can be realized in the form of hardware such as a circuit. Different modules can be located in the same component (e.g., chip, circuit module, etc.) of the chip module or different components of the chip module. Or at least a part of the module is realized in the form of a software program, and this software program is executed in a processor integrated inside the chip module, and the remaining modules (if any) can be realized in the form of hardware such as a circuit.

[0307] Embodiments of this application further provide a computer-readable storage medium, in which instructions are stored, and when the instructions are executed by a processor, the method flow of the above method embodiments is realized.

[0308] Embodiments of this application further provide a computer program product. When the computer program product is executed by a processor, the method flow of the above method embodiments is realized.

[0309] Note that, for the sake of simplicity of description, each of the above method embodiments is represented as a combination of a series of operations. However, this application is not limited to the described order of operations, and it should be understood by those skilled in the art that, based on this application, some operations can be performed in other orders or simultaneously. Also, it should be understood by those skilled in the art that all the embodiments described in the specification are preferred embodiments, and such operations and modules are not necessarily required for this application.

[0310] The descriptions of the embodiments according to this application can refer to each other. Each embodiment description has its own focus. For parts not described in detail in a certain embodiment, the relevant descriptions of other embodiments can be referred to. For the sake of convenience and simplicity of description, for example, regarding the functions of each device and apparatus according to the embodiments of this application and the operations performed thereby, the relevant descriptions of the method embodiments of this application can be referred to. Among the method embodiments and among the device embodiments, they can also refer to, combine, or quote each other.

[0311] Finally, each of the above embodiments is used only for explaining the technical solution of the present application and does not limit the technical solution of the present application. Although the present application has been described in detail with reference to each of the above embodiments, as can be understood by those skilled in the art, those skilled in the art may still correct the technical solutions described in each of the above embodiments, or perform equivalent substitutions on some or all of the technical features thereof. These corrections or substitutions do not deviate from the essence of the corresponding technical solutions from the scope of the technical solutions of each embodiment of the present application.

Claims

A method for obtaining channel state information (CSI) reports executed by a terminal device, comprising: Receiving network information; Obtaining a CSI report based on the network information, wherein the CSI report includes CSI measurement results under the assumption of coherent joint transmission of one or more stations; The network information includes codebook type indication information, and the codebook type indication information is used to indicate the codebook type in the CSI report; The codebook type includes a first codebook type and a second codebook type. The first codebook type is used to indicate obtaining a frequency domain codebook for each station among a plurality of stations, and the second codebook type is used to indicate jointly obtaining the frequency domain codebook of the station; A method for obtaining a CSI report, characterized by the above.

2. The CSI report includes first information and second information. The first information includes at least one of the number of stations information, the number of non-zero wideband amplitude coefficient information, and the reference resource index indication information. The second information includes all or part of the CSI measurement results of the station; The method for obtaining a CSI report according to claim 1, characterized by the above.

3. When the first information includes the reference resource index indication information, the reference resource index indication information is obtained through a bitmap; The method for obtaining a CSI report according to claim 2, characterized by the above.

4. The second information includes at least one of the spatial domain codebook information of each station included in the CSI report, the frequency domain codebook information of each station included in the CSI report, and the non-zero coefficient information of each station included in the CSI report. The frequency domain codebook information of each station is the same or different; The CSI report acquisition method according to claim 2, characterized in that...

5. The second information includes i sets of information, where the value of i is the number of stations included in the CSI report. The CSI measurement result of one station corresponds to one set of information, and i is a positive integer. The CSI report acquisition method according to claim 2, characterized in that...

6. i > 1, and the i sets of information are arranged according to priority. The CSI report acquisition method according to claim 5, characterized in that...

7. Comprising a unit for implementing the CSI report acquisition method according to any one of claims 1 to 6. A communication device, characterized in that...

8. A computer program, wherein the computer program includes code or instructions, and when the code or the instructions are executed on a computer, the computer is caused to execute the CSI report acquisition method according to any one of claims 1 to 6. A computer program, characterized in that...

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