Method and apparatus for reporting channel state information

Abstract

Embodiments of the present application provide a method and apparatus for reporting channel state information (CSI). The method comprises: a terminal device receives a CSI reporting configuration, the CSI reporting configuration at least comprising codebook configuration information in a first measurement mode; and the terminal device performs CSI reporting on the basis of the CSI reporting configuration, a reporting amount of the CSI reporting at least comprising a precoding matrix index (PMI). According to the embodiments of the present application, when a network device adjusts antenna configurations, the CSI reporting configuration is enhanced, so that the terminal device can efficiently and accurately carry out CSI measurement.

Description

Method and device for reporting channel state information Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] With the increasing adoption of 5G (fifth-generation mobile communications) across various industries and its application in more geographic areas, the need for very high data rates and denser networks to handle more advanced services is driving the use of larger numbers of antennas and larger antenna arrays at 5G base stations. In the rapidly expanding new frequency bands, larger antenna arrays can enhance beam coverage and simultaneously serve the data needs of more users.

[0003] Therefore, the 5G Release 19 standardization work supports the enhancement of up to 128 antenna ports and / or digital ports. To assist base stations in sending data more accurately, the reporting and acquisition of Channel State Information (CSI) is crucial.

[0004] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0005] Summary of the Invention

[0006] The inventors found that in the current traditional 5G network, CSI measurement reporting only supports the reception, measurement and reporting of CSI-RS (channel state information reference signal) resources for up to 32 ports. Therefore, the current CSI measurement reporting mechanism cannot support CSI measurement reporting for up to 128 ports, so that the base station side cannot fully obtain accurate channel state information of a larger number of antenna arrays. In addition, the expansion of the existing CSI measurement reporting framework is also very challenging, especially the exponentially increased CSI reporting and feedback overhead caused by the expansion of antenna ports. Therefore, the current standard urgently needs to make a series of enhancements to the existing standard solutions.

[0007] In response to at least one of the above problems or other similar problems, an embodiment of the present application provides a method and apparatus for reporting channel state information so that a terminal device can perform CSI measurement efficiently and accurately.

[0008] According to one aspect of an embodiment of the present application, a method for reporting channel state information is provided, including:

[0009] The terminal device receives a channel state information (CSI) reporting setting, where the CSI reporting setting includes at least codebook configuration information in the first measurement mode;

[0010] The terminal device performs CSI reporting according to the CSI reporting setting, and the reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0011] According to another aspect of an embodiment of the present application, a channel state information reporting device is provided, which is configured in a terminal device, and includes:

[0012] a receiving unit configured to receive a channel state information (CSI) reporting setting, wherein the CSI reporting setting includes at least codebook configuration information in a first measurement mode;

[0013] A processing unit performs CSI reporting according to the CSI reporting configuration, wherein a reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0014] One of the beneficial effects of the embodiments of the present application is that: according to the embodiments of the present application, when the network device adjusts the antenna configuration, by enhancing the CSI reporting settings, the terminal device can perform CSI measurements efficiently and accurately.

[0015] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0016] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0017] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0019] FIG1 is a schematic diagram of port grouping when there are 32 ports;

[0020] FIG2 is a schematic diagram of a method for reporting channel state information according to an embodiment of the present application;

[0021] FIG3 is a schematic diagram of a method for configuring channel state information according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of a device for reporting channel state information according to an embodiment of the present application;

[0023] FIG5 is a schematic diagram of a device for configuring channel state information according to an embodiment of the present application;

[0024] FIG6 is a schematic diagram of a communication system according to an embodiment of the present application;

[0025] FIG7 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0026] FIG8 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0028] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0029] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0030] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0031] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and / or other currently known or future developed communication protocols.

[0032] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to the communication network and provides services to the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0033] Among them, base stations may include but are not limited to: NodeB (NodeB or NB), evolved NodeB (eNodeB or eNB) and 5G base station (gNB), IAB host, etc., and may also include remote radio head (RRH, Remote Radio Head), remote radio unit (RRU, Remote Radio Unit), relay (relay) or low-power node (such as femeto, pico, etc.). The term "base station" can include some or all of their functions. Each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0034] In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. A terminal device can be fixed or mobile and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and so on.

[0035] Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

[0036] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device-to-device (D2D) terminal, machine-to-machine (M2M) terminal, and so on.

[0037] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0038] In mobile communication systems, terminal devices typically measure CSI based on instructions and configuration from network devices and then report the measured CSI to the network devices. When scheduling the terminal devices, the network devices can refer to this CSI to schedule the terminal devices for transmission using the appropriate physical resources and transmission method. Different terminal devices may experience different physical channel conditions. Using a CSI feedback mechanism can effectively utilize physical resources, thereby improving overall network transmission efficiency.

[0039] In the NR CSI feedback mechanism, the terminal device mainly measures the reference signal based on the CSI configuration and reports the measurement results. The reference signal includes CSI-RS and SSB. The NR CSI configuration is mainly divided into two parts. One is that the network device configures the reference signal resources for CSI measurement for the terminal device (CSI-RS resource configuration), and the other is how the network device configures the terminal device to report (CSI reporting configuration). The principles of these two configurations are relatively simple, but the specific details in the protocol are relatively complex. Only the details related to this application are introduced here.

[0040] The CSI-RS resource setting can be used for interference measurement and CSI channel measurement. Each resource setting contains S resource sets. Each resource set contains Ks CSI-RS resources. Aperiodic resource settings can contain one or more resource sets. Periodic and semi-persistent resource settings can contain only one resource set when used for CSI acquisition.

[0041] In addition, regarding the value of Ks, when used for CSI channel measurement, if the codebook type in the reporting setting is 'Type I' (specifically, it may include CodebookType = 'TypeISinglePanle' or 'TypeIMultiPanle'), Ks ≤ 32. When used for CSI channel measurement, if the codebook type in the reporting setting is 'Type II' (specifically, it may include CodebookType = 'typeII', 'typeII-PortSelection', 'typeII-r16', 'typeII-PortSelection-r16', 'typeII-PortSelection-r17'), Ks = 1. This is mainly because the computational complexity of Type II is relatively large, which poses a greater computational challenge to the terminal device. Therefore, the NR system reduces the computational complexity of the terminal device by limiting the value of Ks.

[0042] A CSI report consists of two parts: Part 1 and Part 2. Part 1 (CSI Part 1) has a fixed payload size and indicates the number of information bits in Part 2 (CSI Part 2). In a CSI report, if the current CSI measurement is for CSI channel measurement, the reporting content is specified as follows based on the codebook type:

[0043] Type I CSI: Part 1 includes RI (Rank Indicator) / CRI (CSI-RS Resource Indicator) and the CQI (Channel Quality Indicator) of the first CW (codeword); Part 2 includes LI (Layer Indicator) and PMI (Precoding Matrix Indicator), and also includes the CQI of the second CW when the rank is greater than 4.

[0044] Type II CSI: Part 1 includes RI, CQI, and the number of non-zero wideband amplitude coefficients per layer; Part 2 includes LI and PMI.

[0045] In NR systems, CSI-RS resources used for channel measurement only support a maximum of 32 ports. This can be configured using the nofports field in the nzp-CSI-Resource field of RRC (Radio Resource Control) signaling. In Release 19, due to the significant impact of standardization, new pattern design and per-resource port expansion for ports greater than 32 are not considered.

[0046] In addition, the CSI reporting settings include the reported CSI parameters (report quantity), CSI type (Type I or Type II), codebook parameter configuration, CSI reporting time domain behavior, frequency domain granularity of PMI and CQI, measurement constraint configuration, and CSI reporting frequency band.

[0047] Among them, all reported CSI parameters (report quantity) supported by NR include: 'none', 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI', 'cri-RSRP', 'cri-SINR', 'ssb-Index-RSRP', 'ssb-Index-SINR' or 'cri-RI-LI-PMI-CQI'; CSI types include: 'typeI Single-Panel', 'typeI Multi-Panel', 'typeII', 'typeII-PortSelection', 'typeII-r16', 'typeII-PortSelection-r16', 'typeII-PortSelection-r17'.

[0048] For Type I single-panel (Type I SP) codebook.

[0049] Here is an example of a Type I single-panel codebook:

[0050] For a Type I codebook with 4 or more ports, when rank = 1, it is represented as follows:

[0051] in, is an oversampled 2D DFT (two-dimensional discrete Fourier transform) beam with a length of N1N2; c r,0 is the phase adjustment factor between the two polarization directions, r = 0, 1 represents the polarization direction; c 0,0 =1,c 1,0 ∈{1,j,-1,-j}.

[0052] For the port configuration (N1, N2) and oversampling factor (O1, O2), there are N1O1N2O2 2D DFT beams. The beam indices k1 and k2 are expressed as: k1 = i 1,1 s1+p1,k2=i 1,2 s2+p2

[0053] Where (s1, s2) represents the offset between beam groups, and when L = 1, (s1, s2) = (1, 1), and when L = 4, (s1, s2) = (2, 2). The parameters (p1, p2) represent the beam offset within the beam group. When L = 1 (L is the number of spatial basis vectors), since the beam group contains only one beam, p1 = p2 = 0. When L = 4, if N2 > 1, then p1 ∈ {0, 1}, p2 ∈ {0, 1}; if N2 = 1, then p1 ∈ {0, 1, 2, 3}, p2 = 0.

[0054] When Rank = 1, beam selection and phase adjustment are both reported on a subband basis. Based on the subband feedback overhead, L = 1 and L = 4 are defined as Mode 1 and Mode 2, respectively. Mode 1 has a subband overhead of 2 bits per subband, while Mode 2 has a subband overhead of 4 bits per subband.

[0055] When Rank>1, the design is mainly based on the orthogonality between layers and limiting the values ​​of some codebook parameters.

[0056] LTE Class A codebook design is used for ports below 16, and antenna port grouping is used for ports 16 and above.

[0057] Figure 1 illustrates port grouping for a 32-port configuration. As shown in Figure 1, ports for each polarization are divided into two groups, with each group performing independent beam selection and phase adjustment. Inter-group phase adjustment is used between antenna groups, and inter-polarization phase adjustment is used between polarizations. Port grouping enables wider beams for better coverage.

[0058] For ports below 16, inter-layer orthogonality is achieved by selecting orthogonal beams. For ports 16 and above, inter-layer orthogonality is achieved by phase adjustment between groups and between polarizations.

[0059] For Type I multi-panel (Type I MP) codebook.

[0060] The Type I MP codebook is constructed based on the Type I SP codebook and is derived by introducing an inter-panel phase adjustment factor between the Type I SP codebooks. This inter-panel phase adjustment factor can use wideband feedback or wideband + subband feedback. The Type I MP codebook supports ranks 1 to 4. The supported antenna structures and codebook parameter configurations are shown in the following table:

[0061] Among them, N g Indicates the number of panels. NR supports 2 or 4 panels.

[0062] The codebook part corresponding to each panel in each polarization direction of each layer is expressed as:

[0063] Where p = 0, 1, ..., N g -1 means panel; Same as Type I SP codebook when L=1; c p,r,l Indicates the inter-polarization and inter-panel phase adjustment factors. To account for different feedback overheads, the inter-panel phase adjustment factor can be configured in low-overhead mode (Mode 1) or high-overhead mode (Mode 2). Mode 1 is a wideband inter-panel phase adjustment factor, supporting two or four panels. In this case, the feedback overhead of the phase adjustment factor is 2 bits per subband. Mode 2 is a subband inter-panel phase adjustment factor, supporting only two panels. In this case, the feedback overhead of the phase adjustment factor is 4 bits per subband.

[0064] The inventors discovered that in current 5G networks, CSI measurement reporting only supports CSI-RS resource reception, measurement, and CSI information reporting for up to 32 ports. Therefore, the current CSI measurement reporting mechanism cannot support CSI measurement reporting for up to 128 ports, and thus the base station side cannot fully obtain accurate CSI channel state information for a larger number of antenna arrays. Furthermore, expanding the existing CSI measurement reporting framework is also very challenging, especially with the exponentially increased CSI reporting and feedback caused by the expansion of antenna ports. Therefore, the current standard urgently needs to make a series of enhancements to the existing standard solution.

[0065] The following describes various implementations of the present application in conjunction with the accompanying drawings. In the following description, "when," "if," and "under the circumstances" are interchangeable. Furthermore, the content in parentheses is used to explain or exemplify the content preceding the parentheses and is not intended to limit this application.

[0066] Embodiments of the first aspect

[0067] The present invention provides a method for reporting channel state information, which is described from the perspective of a terminal device. FIG2 is a schematic diagram of the method for reporting channel state information according to an embodiment of the present invention. As shown in FIG2 , the method includes:

[0068] 210: The terminal device receives a channel state information (CSI) reporting setting, where the CSI reporting setting includes at least codebook configuration information in a first measurement mode;

[0069] 220: The terminal device performs CSI reporting according to the CSI reporting setting, and the reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0070] It is worth noting that FIG2 above is only a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the description of FIG2 above.

[0071] According to the above embodiment, when the network device adjusts the antenna configuration, the C CSI reporting setting is enhanced, which enables the terminal device to perform CSI measurement efficiently and accurately.

[0072] In some embodiments, the terminal device may also receive a CSI resource configuration including at least one CSI-RS resource set for channel measurement. The CSI-RS resource set may include K resources (measurement signal resources, also referred to as CSI-RS resources).

[0073] In the above embodiment, the above CSI reporting configuration is related to the above CSI-RS resource configuration. For example, the associated CSI-RS resource configuration is configured in the CSI-reportConfig reporting configuration field of the RRC high-layer signaling.

[0074] In the above embodiment, optionally, the terminal device may perform a PMI and CQI measurement using X CSI-RS resources. Each CSI-RS resource may include Z antenna ports, and the number of antenna ports of each CSI-RS resource may be equal.

[0075] For example, the terminal device may form a 128-port resource by using X=4 CSI-RSs with Z=32 ports in the prior art, and perform a PMI and CQI measurement based on the 128 ports.

[0076] In the above embodiments, the CSI-RS resource configuration and / or CSI reporting setting may be sent via RRC signaling, and this application does not impose any limitation on the specific implementation manner.

[0077] In some embodiments, the first measurement mode is configured by the network device through RRC signaling. For example, the configuration can be performed by adding a new field in the RRC signaling.

[0078] In the above embodiment, the newly added field is, for example, a codebook configuration field, for example, called Codebookcconfig-r19. The codebook configuration field may include a codebook type, for example, called codebookType, and the codebook type may include at least one of the following:

[0079] typeI-SinglePanel-r19;

[0080] typeI-MultiPanel-r19;

[0081] etypeII-r19;

[0082] fetypeII-r19.

[0083] For the meaning of the above codebook types, please refer to the relevant technology and will not be repeated here.

[0084] In some embodiments, the codebook type includes X codebook subset restrictions, for example, the xth codebook subset restriction parameter is 'n1-n2-codebookSubsetRestrictionx-r19'. Alternatively, the codebook type may include only one codebook subset restriction, for example, the codebook subset restriction parameter is 'n1-n2-codebookSubsetRestriction-r19'.

[0085] In some other embodiments, the codebook type includes X codebook parameter groups, for example, 'typeI-SinglePanel-Group1-r17' ... 'typeI-SinglePanel-GroupX-r17'.

[0086] In the above embodiment, the correspondence between the codebook parameter group and the codebook subset restriction may be that each codebook parameter group corresponds to one codebook subset restriction, for example, the codebook subset restriction parameter corresponding to the x-th codebook parameter group is 'n1-n2-codebookSubsetRestrictionx-r19'; or, all codebook parameter groups correspond to one codebook subset restriction, for example, the codebook subset restriction parameter corresponding to all codebook parameter groups is 'n1-n2-codebookSubsetRestriction-r19'.

[0087] In some embodiments, the terminal device may also receive X spatial domain basis vector configuration parameters Lx, where the spatial domain basis vector configuration parameter Lx is the number of spatial basis vectors corresponding to the x-th CSI-RS resource, 1≤x≤X, and X is a positive integer greater than or equal to 1.

[0088] In the above embodiment, optionally, the values ​​of the spatial basis vector configuration parameters Lx may be the same. For example, the number of spatial basis vectors corresponding to the 1st to the Xth CSI-RS resources is the same, that is, Lx=1.

[0089] In some possible implementations, the terminal device calculates and reports the spatial basis vector selection results for each CSI-RS resource based on each CSI-RS resource. For example, the xth CSI-RS resource is used to calculate and report Lx spatial basis vector selection results.

[0090] For example, the terminal device can use the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting, that is, reporting the above-mentioned spatial basis vector selection result based on each CSI-RS resource; or, the terminal device can use the codebook parameter i 1,1 and i 1,2,x Perform CSI reporting, that is, report the above-mentioned spatial basis vector selection result based on each CSI-RS resource. Optionally, the above-mentioned CSI reporting can be broadband reporting.

[0091] In some other possible implementations, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the terminal device calculates and reports X*Lx spatial basis vector selection results based on all CSI-RS resources.

[0092] For example, the terminal device can use the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting, that is, reporting the above X*Lx spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting, that is, reporting the above X*Lx spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1,x and i 1,2 Perform CSI reporting, that is, reporting the above X*Lx spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1 and i 1,2,x Perform CSI reporting, that is, report the above-mentioned X*Lx spatial basis vector selection results based on all CSI-RS resources. Optionally, the above-mentioned CSI reporting can be broadband reporting.

[0093] In some other possible implementations, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the terminal device calculates and reports Lx spatial basis vector selection results and X-1 relative offset values ​​(offset) and / or relative phase correlation values ​​(co-phasing) relative to the above-mentioned Lx-based spatial basis vector selection results based on all CSI-RS resources.

[0094] For example, the terminal device can use the codebook parameter i 1,1 and i 1,2 Perform CSI reporting, that is, report the selection results of the Lx spatial basis vectors based on all CSI-RS resources. Optionally, the CSI reporting can be broadband reporting.

[0095] For another example, the terminal device can use the codebook parameter i 1,3,x and i 1,4,x The relative offset value and / or relative phase correlation value are reported. Optionally, the relative offset value and / or relative phase correlation value can be reported via broadband. For example, the terminal device can report via 2-bit QPSK or 4-bit 16PSK.

[0096] In some other possible implementations, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the terminal device calculates and reports Lx spatial basis vector selection results based on all CSI-RS resources.

[0097] For example, the terminal device can use the codebook parameter i 1,1 and i 1,2Perform CSI reporting, that is, report the selection results of the Lx spatial basis vectors based on all CSI-RS resources. Optionally, the CSI reporting can be broadband reporting.

[0098] In some other possible implementations, if the values ​​of the spatial basis vector configuration parameters Lx are the same, if the number of antenna ports of the CSI-RS resource is greater than or equal to 16, the terminal device divides all antenna ports of the CSI-RS resource into Y groups, and calculates and reports the selection results of Lx spatial basis vectors for one group based on each CSI-RS resource.

[0099] For example, Lx=1 in the above description.

[0100] For another example, the terminal device can use the codebook parameter i 1,3,Y-1 The other groups report the relative offset value and / or relative phase co-phasing value for the above group 1. Optionally, the reporting of the relative offset value and / or relative phase co-phasing value may be broadband reporting or sub-band reporting.

[0101] In other embodiments, the terminal device may also receive a spatial domain basis vector configuration parameter L, where L is the number of spatial domain basis vectors and is a positive integer greater than or equal to 1.

[0102] In the above embodiment, optionally, L=1.

[0103] In some possible implementations, the terminal device calculates and reports L spatial basis vector selection results based on each CSI-RS resource according to each CSI-RS resource.

[0104] For example, the terminal device uses the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting, that is, reporting the above-mentioned L spatial basis vector selection results based on each CSI-RS resource; or, the terminal device uses the codebook parameter i 1,1 and i 1,2,x Perform CSI reporting, that is, report the selection results of the L spatial basis vectors based on each CSI-RS resource. Optionally, the CSI reporting can be broadband reporting.

[0105] In some other possible implementations, the terminal device calculates and reports X*L spatial basis vector selection results based on all CSI-RS resources.

[0106] For example, the terminal device can use the codebook parameter i 1,1,x and i 1,2,xPerform CSI reporting, that is, reporting the above X*L spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting, that is, reporting the above X*L spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1,x and i 1,2 Perform CSI reporting, that is, reporting the above X*L spatial basis vector selection results based on all CSI-RS resources; or, the terminal device uses the codebook parameter i 1,1 and i 1,2,x Perform CSI reporting, that is, report the above-mentioned X*L spatial basis vector selection results based on all CSI-RS resources. Optionally, the above-mentioned CSI reporting can be broadband reporting.

[0107] In some other possible implementations, the terminal device calculates and reports L spatial basis vector selection results and X-1 relative offset values ​​(offset) and / or relative phase correlation values ​​(co-phasing) relative to the above L spatial basis vector selection results based on all CSI-RS resources.

[0108] For example, the terminal device uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting, that is, report the selection results of the L spatial basis vectors based on all CSI-RS resources. Optionally, the CSI reporting can be broadband reporting.

[0109] For another example, the terminal device uses the codebook parameter i 1,3，x and i 1,4,x The relative offset value and / or relative phase correlation value are reported. Optionally, the relative offset value and / or relative phase correlation value can be reported via broadband. For example, the terminal device can report via 2-bit QPSK or 4-bit 16PSK.

[0110] In some other possible implementations, the terminal device calculates and reports L spatial basis vector selection results based on all CSI-RS resources.

[0111] For example, the terminal device passes i 1,1 and i 1,2 Perform CSI reporting, that is, report the selection results of the L spatial basis vectors based on all CSI-RS resources. Optionally, the CSI reporting can be broadband reporting.

[0112] In some other possible implementations, if the values ​​of the spatial basis vector configuration parameters L are the same, and if the number of ports of the CSI-RS resource is greater than or equal to 16, the terminal device can divide all antenna ports of the CSI-RS resource into Y groups, and calculate and report the selection results of L spatial basis vectors for one group based on the CSI-RS resource.

[0113] For example, L=1 in the above description.

[0114] For another example, the terminal device can use the codebook parameter i 1,3,Y-1 The other groups report the relative offset value and / or relative phase co-phasing value for the above group 1. Optionally, the reporting of the relative offset value and / or relative phase co-phasing value may be broadband reporting or sub-band reporting.

[0115] In some further embodiments, the terminal device calculates and reports an optimal basis vector among the Lx spatial basis vector selection results of the wideband or subband according to each CSI-RS resource.

[0116] For example, the terminal device can use the codebook parameter i 2,x Perform CSI reporting for each layer, that is, report the selected optimal basis vector for each layer. Optionally, the terminal device can perform the above reporting using 1 to 4 bits.

[0117] In some further embodiments, the terminal device calculates and reports an optimal basis vector from L spatial basis vector selection results for the wideband or subband based on all CSI-RS resources.

[0118] For example, the terminal device may report the CSI of each layer using the codebook parameter i2, that is, report the selected optimal basis vector for each layer. Optionally, the terminal device may report using 1 to 4 bits.

[0119] For another example, the terminal device uses the codebook parameter i 2,1 Perform CSI reporting for one layer and pass the codebook parameter i 2,2 Report the relative phase correlation value (co-phasing) of the spatial basis vector selection results of other layers relative to the above layer. Optionally, the terminal device can perform the above reporting using 2-bit QPSK or 4-bit 16PSK.

[0120] For the meaning of the aforementioned codebook parameters, please refer to the relevant technology and will not be repeated here.

[0121] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0122] According to the method of the embodiment of the present application, the terminal device can perform CSI measurement efficiently and accurately.

[0123] Embodiments of the second aspect

[0124] An embodiment of the present application provides a method for configuring channel state information, which is explained from the perspective of a network device, and the contents that are the same as those in the embodiment of the first aspect are not repeated here.

[0125] FIG3 is a schematic diagram of a method for configuring channel state information according to an embodiment of the present application. As shown in FIG3 , the method includes:

[0126] 310: The network device sends a channel state information (CSI) reporting setting to the terminal device, where the CSI reporting setting includes at least codebook configuration information in the first measurement mode;

[0127] 320: The network device receives the CSI report sent by the terminal device according to the CSI reporting configuration, where the reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0128] It is worth noting that FIG3 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the description of FIG3 above.

[0129] In some embodiments, the network device may configure the first measurement mode through RRC signaling.

[0130] For example, the RRC signaling includes a codebook configuration field (Codebookcconfig-r19), the codebook configuration field (Codebookcconfig-r19) includes a codebook type (codebookType), and the codebook type (codebookType) includes at least one of the following:

[0131] typeI-SinglePanel-r19;

[0132] typeI-MultiPanel-r19;

[0133] etypeII-r19;

[0134] fetypeII-r19.

[0135] The relevant contents about the above codebook types have been explained in the embodiment of the first aspect and will not be repeated here.

[0136] In some embodiments, the network device may further send X spatial basis vector configuration parameters Lx to the terminal device, where Lx is the number of spatial basis vectors corresponding to the x-th CSI-RS resource, where 1≤x≤X, and X is a positive integer greater than or equal to 1.

[0137] In the above embodiment, the network device may also receive Lx spatial basis vector selection results based on each CSI-RS resource calculated and reported by the terminal device according to each CSI-RS resource. Alternatively, the network device may also receive X*Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the network device may also receive Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources and X-1 relative offset values ​​and / or relative phase correlation values ​​relative to the Lx spatial basis vector selection results. Alternatively, the network device may also receive Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the network device may receive 1 group of Lx spatial basis vector selection results calculated and reported by the terminal device according to each CSI-RS resource after all antenna ports of the CSI-RS resources are divided into Y groups. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0138] In other embodiments, the network device may also send one spatial basis vector configuration parameter L to the terminal device, where L is the number of spatial basis vectors and is a positive integer greater than or equal to 1.

[0139] In the above embodiment, the network device may also receive L spatial basis vector selection results based on each CSI-RS resource calculated and reported by the terminal device according to each CSI-RS resource. Alternatively, the network device may also receive X*L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the network device may also receive L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources and X-1 relative offset values ​​and / or relative phase correlation values ​​relative to the L spatial basis vector selection results. Alternatively, the network device may also receive L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the network device may receive L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the network device may receive 1 group of L spatial basis vector selection results calculated and reported according to each CSI-RS resource after the terminal device divides all antenna ports of the CSI-RS resources into Y groups. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0140] In yet other embodiments, the network device may further receive an optimal basis vector from the Lx spatial basis vector selection results for the wideband or subband, calculated and reported by the terminal device based on each CSI-RS resource. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0141] In yet other embodiments, the network device may further receive an optimal basis vector from L spatial basis vector selection results for a wideband or subband calculated and reported by the terminal device based on all CSI-RS resources. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0142] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0143] According to the method of the embodiment of the present application, the terminal device can perform CSI measurement efficiently and accurately.

[0144] Embodiments of the third aspect

[0145] The embodiment of the present application provides a channel state information reporting device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated.

[0146] FIG4 is a schematic diagram of a channel state information reporting device according to an embodiment of the present application. As shown in FIG4 , the channel state information configuration and reporting device 400 according to the embodiment of the present application includes:

[0147] a receiving unit 410 configured to receive a channel state information (CSI) reporting setting, wherein the CSI reporting setting includes at least codebook configuration information in a first measurement mode; and

[0148] The processing unit 420 performs CSI reporting according to the CSI reporting configuration, where a reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0149] In some embodiments, the first measurement mode is configured by the network device through RRC signaling.

[0150] In the above embodiment, the RRC signaling may include a codebook configuration field (Codebookcconfig-r19), the codebook configuration field (Codebookcconfig-r19) includes a codebook type (codebookType), and the codebook type (codebookType) includes at least one of the following:

[0151] typeI-SinglePanel-r19;

[0152] typeI-MultiPanel-r19;

[0153] etypeII-r19;

[0154] fetypeII-r19.

[0155] In the above embodiment, the codebook type may include X codebook subset restrictions, and the xth codebook subset restriction parameter is 'n1-n2-codebookSubsetRestrictionx-r19'; or the codebook type may include 1 codebook subset restriction, and the codebook subset restriction parameter is 'n1-n2-codebookSubsetRestriction-r19'.

[0156] In the above embodiment, the codebook type may include X codebook parameter groups, wherein each codebook parameter group corresponds to one codebook subset restriction; or, all codebook parameter groups correspond to one codebook subset restriction.

[0157] In some embodiments, the receiving unit 410 receives X spatial basis vector configuration parameters Lx, where Lx is the number of spatial basis vectors corresponding to the x-th CSI-RS resource, where 1≤x≤X, and X is a positive integer greater than or equal to 1.

[0158] In the above embodiment, the values ​​of the spatial basis vector configuration parameters Lx may be the same.

[0159] In the above embodiment, the value of each spatial basis vector configuration parameter Lx may be 1, that is, Lx=1.

[0160] In the above embodiment, the processing unit 420 may calculate and report the selection results of Lx spatial basis vectors based on each CSI-RS resource according to each CSI-RS resource.

[0161] For example, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2,x Report CSI.

[0162] In the above embodiment, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the processing unit 420 may calculate and report X*Lx spatial basis vector selection results according to all CSI-RS resources.

[0163] For example, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2 Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2,x Report CSI.

[0164] In the above embodiment, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the processing unit 420 can calculate and report Lx spatial basis vector selection results and X-1 relative offset values ​​(offset) and / or relative phase correlation values ​​(co-phasing) relative to the Lx spatial basis vector selection results based on all CSI-RS resources.

[0165] For example, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,3,x and i 1,4,x Report the relative offset value and / or relative phase correlation value.

[0166] In the above embodiment, if the values ​​of the spatial basis vector configuration parameters Lx are the same, the processing unit 420 may calculate and report Lx spatial basis vector selection results according to all CSI-RS resources.

[0167] For example, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2 Report CSI.

[0168] In the above embodiment, if the values ​​of the spatial basis vector configuration parameters Lx are the same, and if the number of antenna ports of the CSI-RS resource is greater than or equal to 16, the processing unit 420 may divide all antenna ports of the CSI-RS resource into Y groups, and calculate and report the Lx spatial basis vector selection results for each group for each CSI-RS resource, where Lx = 1.

[0169] For example, the processing unit 420 uses the codebook parameter i 1,3,Y-1 Report the relative offset value (offset) and / or relative phase correlation value (co-phasing) of the other groups with respect to the one group.

[0170] In some other embodiments, the receiving unit 410 receives one spatial basis vector configuration parameter L, where L is the number of spatial basis vectors and is a positive integer greater than or equal to 1.

[0171] In the above embodiment, L is, for example, 1, that is, L=1.

[0172] In the above embodiment, the processing unit 420 may calculate and report the L spatial basis vector selection results based on each CSI-RS resource according to each CSI-RS resource.

[0173] For example, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2,x Report CSI.

[0174] In the above embodiment, the processing unit 420 may also calculate and report X*L spatial basis vector selection results according to all CSI-RS resources.

[0175] For example, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2,x Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1,x and i 1,2Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2,x Report CSI.

[0176] In the above embodiment, the processing unit 420 may also calculate and report L spatial basis vector selection results and X-1 relative offset values ​​(offset) and / or relative phase correlation values ​​(co-phasing) relative to the L spatial basis vector selection results based on all CSI-RS resources.

[0177] For example, the processing unit 420 uses the codebook parameter i 1,1 and i 1,2 Perform CSI reporting; or, the processing unit 420 uses the codebook parameter i 1,3，x and i 1,4,x Report the relative offset value and / or relative phase correlation value.

[0178] In the above embodiment, the processing unit 420 may further calculate and report L spatial basis vector selection results according to all CSI-RS resources.

[0179] For example, the processing unit 420 passes i 1,1 and i 1,2 Report CSI.

[0180] In the above embodiment, if the values ​​of the spatial basis vector configuration parameters L are the same, and if the number of CSI-RS resource ports is greater than or equal to 16, the processing unit 420 may divide all antenna ports of the CSI-RS resource into Y groups, and calculate and report the L spatial basis vector selection results for one group based on the CSI-RS resource. For example, L is 1, that is, L=1.

[0181] For example, the processing unit 420 uses the codebook parameter i 1,3,Y-1 Report the relative offset value (offset) and / or relative phase correlation value (co-phasing) of other groups with respect to the one group.

[0182] In some further embodiments, the processing unit 420 calculates and reports an optimal basis vector among the Lx spatial basis vector selection results for the wideband or subband according to each CSI-RS resource.

[0183] For example, the processing unit 420 uses the codebook parameter i 2,x Report CSI at each layer.

[0184] In some further embodiments, the processing unit 420 calculates and reports an optimal basis vector among L spatial basis vector selection results for the wideband or subband according to all CSI-RS resources.

[0185] For example, the processing unit 420 reports the CSI of each layer using the codebook parameter i2.

[0186] For another example, the processing unit 420 uses the codebook parameter i 2,1 Perform CSI reporting for one layer and pass the codebook parameter i 2,2 Report the relative phase correlation values ​​(co-phasing) of the spatial basis vector selection results of other layers relative to the layer.

[0187] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0188] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The channel state information reporting device 400 may also include other components or modules. For the specific contents of these components or modules, reference may be made to related technologies.

[0189] In addition, for the sake of simplicity, FIG4 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0190] Through the apparatus of the embodiment of the present application, the terminal device can perform CSI measurement efficiently and accurately.

[0191] Embodiments of the fourth aspect

[0192] The embodiment of the present application provides a device for configuring channel state information. The device may be, for example, a network device, or one or more components or assemblies configured on the network device. The contents that are the same as those in the first and second aspects of the embodiment are not repeated here.

[0193] FIG5 is a schematic diagram of a channel state information configuration device according to an embodiment of the present application. As shown in FIG5 , the channel state information configuration device 500 according to an embodiment of the present application includes:

[0194] a sending unit 510 configured to send a channel state information (CSI) reporting setting to a terminal device, the CSI reporting setting including at least codebook configuration information in a first measurement mode;

[0195] The receiving unit 520 receives a CSI report sent by the terminal device according to the CSI reporting setting, where the reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0196] In some embodiments, as shown in FIG5 , the apparatus 500 further includes:

[0197] The configuration unit 530 is configured to configure the first measurement mode through RRC signaling.

[0198] For example, the RRC signaling includes a codebook configuration field (Codebookcconfig-r19), the codebook configuration field (Codebookcconfig-r19) includes a codebook type (codebookType), and the codebook type (codebookType) includes at least one of the following:

[0199] typeI-SinglePanel-r19;

[0200] typeI-MultiPanel-r19;

[0201] etypeII-r19;

[0202] fetypeII-r19.

[0203] The relevant contents about the above codebook types have been explained in the embodiment of the first aspect and will not be repeated here.

[0204] In some embodiments, the sending unit 510 may further send X spatial basis vector configuration parameters Lx to the terminal device, where Lx is the number of spatial basis vectors corresponding to the x-th CSI-RS resource, where 1≤x≤X, and X is a positive integer greater than or equal to 1.

[0205] In the above embodiment, the receiving unit 520 may also receive Lx spatial basis vector selection results based on each CSI-RS resource calculated and reported by the terminal device according to each CSI-RS resource. Alternatively, the receiving unit 520 may also receive X*Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the receiving unit 520 may also receive Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources and X-1 relative offset values ​​and / or relative phase correlation values ​​relative to the Lx spatial basis vector selection results. Alternatively, the receiving unit 520 may also receive Lx spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the receiving unit 520 may receive 1 group of Lx spatial basis vector selection results calculated and reported according to each CSI-RS resource after the terminal device divides all antenna ports of the CSI-RS resource into Y groups. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0206] In other embodiments, the sending unit 510 may also send one spatial basis vector configuration parameter L to the terminal device, where L is the number of spatial basis vectors and is a positive integer greater than or equal to 1.

[0207] In the above embodiment, the receiving unit 520 may also receive L spatial basis vector selection results based on each CSI-RS resource calculated and reported by the terminal device according to each CSI-RS resource. Alternatively, the receiving unit 520 may also receive X*L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the receiving unit 520 may also receive L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources and X-1 relative offset values ​​and / or relative phase correlation values ​​relative to the L spatial basis vector selection results. Alternatively, the receiving unit 520 may also receive L spatial basis vector selection results calculated and reported by the terminal device according to all CSI-RS resources. Alternatively, the receiving unit 520 may receive 1 group of L spatial basis vector selection results calculated and reported by the terminal device according to each CSI-RS resource after all antenna ports of the CSI-RS resources are divided into Y groups. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and will not be repeated here.

[0208] In still other embodiments, the receiving unit 520 may further receive an optimal basis vector from the Lx spatial basis vector selection results for the wideband or subband, calculated and reported by the terminal device based on each CSI-RS resource. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and are not further described here.

[0209] In still other embodiments, the receiving unit 520 may further receive an optimal basis vector from L spatial basis vector selection results for a wideband or subband calculated and reported by the terminal device based on all CSI-RS resources. The codebook parameters used by the terminal device for the above reporting have been described in the embodiment of the first aspect and are not further described here.

[0210] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0211] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The channel state information configuration device 500 may also include other components or modules. For the specific contents of these components or modules, reference may be made to related technologies.

[0212] In addition, for simplicity, FIG5 only illustrates the connection relationship or signal path between various components or modules. However, those skilled in the art should be aware that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; this application is not limited to this.

[0213] Through the embodiments of the present application, the terminal device can perform CSI measurements efficiently and accurately.

[0214] Embodiments of the fifth aspect

[0215] An embodiment of the present application also provides a communication system, which includes a network device and a terminal device.

[0216] FIG6 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using a terminal device and a network device as an example. As shown in FIG6 , a communication system 600 may include a network device 601 and terminal devices 602 and 603. For simplicity, FIG6 illustrates only two terminal devices and one network device as an example, but the embodiments of the present application are not limited thereto.

[0217] In the embodiment of the present application, existing services or future services can be transmitted between the network device 601 and the terminal devices 602 and 603. For example, these services may include but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0218] It is worth noting that FIG6 shows that both terminal devices 602 and 603 are within the coverage of network device 601, but the present application is not limited thereto. Both terminal devices 602 and 603 may not be within the coverage of network device 601, or one terminal device 602 may be within the coverage of network device 601 while the other terminal device 603 is outside the coverage of network device 601.

[0219] In some embodiments, the terminal device includes the apparatus described in the embodiment of the third aspect, and is configured to perform the method described in the embodiment of the first aspect. Since the method has been described in detail in the embodiment of the first aspect, its content is incorporated herein and will not be repeated.

[0220] In some embodiments, the network device includes the apparatus described in the embodiment of the fourth aspect, and is configured to perform the method described in the embodiment of the second aspect. Since the method has been described in detail in the embodiment of the second aspect, its content is incorporated herein and will not be repeated.

[0221] An embodiment of the present application further provides a terminal device, which may be, for example, a UE, but the present application is not limited thereto and may also be other devices.

[0222] Figure 7 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 7 , terminal device 700 may include a processor 710 and a memory 720. Memory 720 stores data and programs and is coupled to processor 710. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0223] For example, the processor 710 may be configured to execute a program to implement the method described in the embodiment of the first aspect.

[0224] As shown in Figure 7 , the terminal device 700 may further include: a communication module 730, an input unit 740, a display 750, and a power supply 760. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 700 does not necessarily include all of the components shown in Figure 7 , and these components are not essential. Furthermore, the terminal device 700 may also include components not shown in Figure 7 , for which reference may be made to the prior art.

[0225] An embodiment of the present application further provides a network device, which may be a gNB, for example, but the present application is not limited thereto and may also be other network devices.

[0226] Figure 8 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 8 , network device 800 may include a processor 810 (e.g., a central processing unit (CPU)) and a memory 820 ; the memory 820 is coupled to the processor 810 . The memory 820 may store various data and may also store an information processing program 830 , which is executed under the control of the processor 810 .

[0227] For example, the processor 810 may be configured to execute a program to implement the method as described in the embodiment of the second aspect.

[0228] In addition, as shown in FIG8 , network device 800 may further include: a transceiver 840 and an antenna 850, etc.; wherein, the functions of the above components are similar to those in the prior art and are not described in detail here. It is worth noting that network device 800 does not necessarily include all the components shown in FIG8 ; in addition, network device 800 may also include components not shown in FIG8 , and reference may be made to the prior art for details.

[0229] An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

[0230] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

[0231] An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the method described in the embodiment of the second aspect.

[0232] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method described in the embodiment of the second aspect.

[0233] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0234] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0235] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0236] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0237] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0238] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0239] 1. A method for configuring channel state information, wherein the method comprises:

[0240] The network device sends a channel state information (CSI) reporting setting to the terminal device, where the CSI reporting setting includes at least codebook configuration information in the first measurement mode;

[0241] The network device receives the CSI report performed by the terminal device according to the CSI reporting setting, and the reporting amount of the CSI report includes at least a precoding matrix index (PMI).

[0242] 2. The method according to Supplement 1, wherein:

[0243] The first measurement mode is configured by the network device through RRC signaling;

[0244] The RRC signaling includes a codebook configuration field (Codebookcconfig-r19), the codebook configuration field (Codebookcconfig-r19) includes a codebook type (codebookType), and the codebook type (codebookType) includes at least one of the following:

[0245] typeI-SinglePanel-r19;

[0246] typeI-MultiPanel-r19;

[0247] etypeII-r19;

[0248] fetypeII-r19;

[0249] The codebook type includes X codebook parameter groups.

[0250] 3. The method according to Supplementary Note 2, wherein:

[0251] Each codebook parameter group corresponds to one codebook subset restriction; or,

[0252] All codebook parameter groups correspond to one codebook subset restriction.

[0253] 4. The method according to Supplementary Note 1, further comprising:

[0254] The terminal device receives X spatial basis vector configuration parameters Lx, where Lx is the number of spatial basis vectors corresponding to the x-th CSI-RS resource, where 1≤x≤X, and X is a positive integer greater than or equal to 1;

[0255] in,

[0256] The values ​​of the spatial basis vector configuration parameters Lx are the same; or,

[0257] The value of each of the spatial basis vector configuration parameters Lx is 1, that is, Lx=1.

[0258] 5. The method according to Supplementary Note 1, wherein the method further comprises:

[0259] The terminal device receives one spatial basis vector configuration parameter L, where L is the number of spatial basis vectors and is a positive integer greater than or equal to 1, wherein L=1.

[0260] 6. The method according to Supplementary Note 1, wherein the method further comprises:

[0261] The terminal device calculates and reports an optimal basis vector among the Lx spatial basis vector selection results of the broadband or subband according to each CSI-RS resource, wherein,

[0262] The terminal device uses the codebook parameter i 2,x Report CSI at each layer.

[0263] 7. The method according to Supplementary Note 1, wherein the method further comprises:

[0264] The terminal device calculates and reports an optimal basis vector among L spatial basis vector selection results of the broadband or subband according to all CSI-RS resources, wherein,

[0265] The terminal device reports the CSI of each layer through the codebook parameter i2.

[0266] 8. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method as described in any one of Notes 1 to 7.

[0267] 9. A communication system, comprising a network device and a terminal device, wherein the network device is configured to execute the method described in any one of Notes 1 to 7, and the terminal device is configured to receive the CSI reporting setting sent by the network device, and perform CSI reporting according to the CSI reporting setting, and the reporting amount of the CSI report includes at least PMI.

Claims

1. A channel state information reporting device is configured in a terminal device, wherein: The device comprises: a receiving unit configured to receive a channel state information (CSI) reporting setting, wherein the CSI reporting setting includes at least codebook configuration information in a first measurement mode; A processing unit performs CSI reporting according to the CSI reporting configuration, wherein a reporting amount of the CSI report includes at least a precoding matrix index (PMI).

2. The device according to claim 1, wherein The first measurement mode is configured by the network device through radio resource control (RRC) signaling.

3. The device according to claim 2, wherein The RRC signaling includes a codebook configuration field, the codebook configuration field includes a codebook type, and the codebook type includes at least one of the following: typeI-SinglePanel-r19; typeI-MultiPanel-r19; etypeII-r19; fetypeII-r19.

4. The device according to claim 3, wherein The codebook type includes X codebook subset restrictions, and the xth codebook subset restriction parameter is 'n1-n2-codebookSubsetRestrictionx-r19'; or, The codebook type includes one codebook subset restriction, and the codebook subset restriction parameter is 'n1-n2-codebookSubsetRestriction-r19'.

5. The device according to claim 1, wherein The receiving unit receives X spatial basis vector configuration parameters Lx, where Lx is the number of spatial basis vectors corresponding to the x-th channel state information reference signal (CSI-RS) resource, where 1≤x≤X, and X is a positive integer greater than or equal to 1.

6. The device according to claim 5, wherein The processing unit calculates and reports Lx spatial basis vector selection results based on each CSI-RS resource according to each CSI-RS resource.

7. The device according to claim 5, wherein If the values of the spatial basis vector configuration parameters Lx are the same, the processing unit calculates and reports X*Lx spatial basis vector selection results according to all CSI-RS resources.

8. The device according to claim 5, wherein If the values of the spatial basis vector configuration parameters Lx are the same, the processing unit calculates and reports Lx spatial basis vector selection results and X-1 relative offset values and / or relative phase correlation values relative to the Lx spatial basis vector selection results based on all CSI-RS resources.

9. The device according to claim 5, wherein If the values of the spatial basis vector configuration parameters Lx are the same, the processing unit calculates and reports Lx spatial basis vector selection results according to all CSI-RS resources.

10. The device according to claim 5, wherein If the values of the spatial basis vector configuration parameters Lx are the same, and the number of antenna ports of the CSI-RS resource is greater than or equal to 16, the processing unit divides all antenna ports of the CSI-RS resource into Y groups, and calculates and reports the Lx spatial basis vector selection results of one group based on each CSI-RS resource.

11. The device according to claim 10, wherein The processing unit uses the codebook parameter i 1,3,Y-1 Report the relative offset value and / or relative phase correlation value of the other groups with respect to the one group.

12. The device according to claim 1, wherein The receiving unit receives a spatial basis vector configuration parameter L, where L is the number of spatial basis vectors and is a positive integer greater than or equal to 1.

13. The device according to claim 12, wherein The processing unit calculates and reports L spatial basis vector selection results based on each CSI-RS resource according to each CSI-RS resource.

14. The device according to claim 12, wherein The processing unit calculates and reports X*L spatial basis vector selection results according to all CSI-RS resources.

15. The device according to claim 12, wherein The processing unit calculates and reports L spatial basis vector selection results and X-1 relative offset values and / or relative phase correlation values relative to the L spatial basis vector selection results based on all CSI-RS resources.

16. The device according to claim 12, wherein The processing unit calculates and reports L spatial basis vector selection results according to all CSI-RS resources.

17. The device according to claim 12, wherein If the values of the spatial basis vector configuration parameters L are the same, and if the number of ports of the CSI-RS resource is greater than or equal to 16, the processing unit divides all antenna ports of the CSI-RS resource into Y groups, and calculates and reports the selection results of L spatial basis vectors for one group based on the CSI-RS resource.

18. The device according to claim 17, wherein The processing unit uses the codebook parameter i 1,3,Y-1 Report the relative offset values and / or relative phase correlation values of other groups with respect to the one group.

19. The device according to claim 1, wherein The processing unit calculates and reports an optimal basis vector among Lx spatial basis vector selection results of the wideband or subband according to each CSI-RS resource.

20. The device according to claim 1, wherein The processing unit calculates and reports an optimal basis vector among L spatial basis vector selection results of the broadband or subband according to all CSI-RS resources, wherein: The processing unit uses the codebook parameter i 2,1 Perform CSI reporting for one layer and pass the codebook parameter i 2,2 Report the relative phase correlation values of the spatial basis vector selection results of other layers relative to the layer.

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