A method for reporting channel state information, a receiving method

Abstract

The present application provides a method for reporting channel state information and a receiving method. The reporting method includes: receiving a reference signal sent by a second communication node; determining, according to a first type of reporting configuration signaling associated with the reference signal, a first type of channel state information set and / or a second type of channel state information set, and reporting same to the second communication node; wherein, the first type of channel state information set includes at least one of the following: a reference signal resource index, a reference signal resource set index, a reference signal resource configuration index, a reporting configuration index, a reference signal port group index, a reference signal port group set index, a port index, and a rank indication information; and the second type of channel state information set includes at least one of the following: a precoding matrix indication information, a channel state indication information, an amplitude coefficient, a phase coefficient, and a reference signal received power.

Description

Technical Field

[0001] This application relates to the field of communication transmission technologies, and particularly relates to a method for reporting channel state information and a receiving method. Background Art

[0002] Ultra-wideband high-frequency bands (i.e., millimeter-wave communication) have become an important direction for the development of future mobile communications, attracting the attention of the global academic and industrial communities. In particular, when the spectrum resources are increasingly congested and a large number of physical devices are connected, the advantages of millimeter waves become more and more attractive. Many standardization organizations, such as IEEE (Institute of Electrical and Electronics Engineers) and 3GPP (3rd Generation Partnership Project), have started corresponding standardization work. For example, in the 3GPP standard group, high-frequency band communication will become an important innovation point of 5G New Radio Access Technology (New RAT) due to its significant advantage of large bandwidth.

[0003] However, high-frequency band communication also faces challenges in link attenuation. Specifically, these challenges include large propagation path loss, greater absorption by air (especially oxygen), and significant impact of rain fade. In the face of these challenges, high-frequency band communication systems can utilize the characteristics of short wavelengths in high-frequency bands and easy antenna integration, and adopt multi-antenna arrays and beamforming schemes to obtain high antenna gain and combat signal transmission loss, thereby ensuring link margin and improving communication robustness.

[0004] During the antenna weight (also known as precoding, beam) training process, the high-frequency band transmitter sends training pilots, and the receiver receives the channel and performs channel estimation. Then, the high-frequency band receiver needs to feedback the channel state information to the training transmitter, facilitating the transceiver to find multiple sets of transceiver antenna weight pairs required for multi-path data transmission from the optional transceiver antenna weight pairs, and improving the overall spectral efficiency.

[0005] In the existing 5G communication system, the feedback of channel state information related to analog beams and the feedback of channel state information related to digital beams are independently decoupled. However, considering that the analog beam feedback is only based on the received signal strength and cannot consider the cases of self-interference and mutual interference, the actually feedback beam is difficult to ensure a globally optimal combination scheme after being combined with the digital beam. The prior art does not provide a solution for jointly reporting channel state information related to the analog domain and the digital domain in scenarios with multiple base stations (or TRPs (Transmission Points)) and multiple panels. Summary of the Invention

[0006] This application provides a method for reporting channel state information, a receiving method, and a solution for jointly reporting channel state information in a hybrid analog and digital domain scenario.

[0007] The technical solution adopted in this application is as follows:

[0008] In a first aspect, this application provides a method for reporting channel state information, which is applied to a first communication node and includes:

[0009] Receiving a reference signal sent by a second communication node;

[0010] Determining and reporting to the second communication node a first set of channel state information and / or a second set of channel state information according to a first type of reporting configuration signaling associated with the reference signal;

[0011] Wherein, the first set of channel state information includes at least one of the following:

[0012] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0013] The second set of channel state information includes at least one of the following:

[0014] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0015] In a second aspect, this application provides a device for reporting channel state information, which is set in a first communication node and includes:

[0016] A receiving module, configured to receive a reference signal sent by a second communication node;

[0017] A processing module, configured to determine and report to the second communication node a first set of channel state information and / or a second set of channel state information according to a first type of reporting configuration signaling associated with the reference signal;

[0018] Wherein, the first set of channel state information includes at least one of the following:

[0019] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0020] The second set of channel state information includes at least one of the following:

[0021] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0022] In a third aspect, the present application provides a method for receiving channel state information, which is applied to a second communication node and includes:

[0023] Sending a reference signal to a first communication node;

[0024] Receiving a first set of channel state information and / or a second set of channel state information determined by the first communication node according to first-type reporting configuration signaling associated with the reference signal;

[0025] Wherein, the first set of channel state information includes at least one of the following:

[0026] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0027] The second set of channel state information includes at least one of the following:

[0028] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0029] In a fourth aspect, the present application provides a receiving device for channel state information, which is arranged in a second communication node and includes:

[0030] A sending module configured to send a reference signal to a first communication node;

[0031] A set module configured to receive a first set of channel state information and / or a second set of channel state information determined by the first communication node according to first-type reporting configuration signaling associated with the reference signal;

[0032] Wherein, the first set of channel state information includes at least one of the following:

[0033] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0034] The second set of channel state information includes at least one of the following:

[0035] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0036] Compared with the prior art, the present application has the following beneficial effects:

[0037] According to the technical solution of the present application, due to the limitation of the beam transmission capability of the sending end, through configuration, an effective limitation on the selection of reference signal feedback by the receiving end is achieved, and further, the joint feedback of channel state information in the analog domain and the digital domain in scenarios of multiple TRP sites, multiple base stations (or TRPs), and multiple panels is realized. Information about multiple base stations (or TRPs), multiple panels, and analog domain beams is fed back through the first type of channel state information, while the digital domain-related information is fed back through the second type of channel state information. By using the association relationship to correlate the two types of information and jointly report them, the system performance is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a flowchart of the channel state information reporting method according to an embodiment of the present application;

[0039] Figure 2 It is a schematic structural diagram of a hybrid precoding beamforming transceiver according to an embodiment of the present application;

[0040] Figure 3 It is a schematic diagram of reference signal transmission and channel state information feedback according to an embodiment of the present application;

[0041] Figure 4 It is a schematic diagram of reference signal configuration according to an embodiment of the present application;

[0042] Figure 5 It is another schematic diagram of reference signal configuration according to an embodiment of the present application;

[0043] Figure 6 It is a schematic diagram of a set of reference signal port groups according to an embodiment of the present application;

[0044] Figure 7 It is a schematic structural diagram of a channel state information reporting device according to an embodiment of the present application;

[0045] Figure 8 It is a flowchart of the channel state information receiving method according to an embodiment of the present application;

[0046] Figure 9 It is a schematic structural diagram of a channel state information receiving device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] To make the application objectives, technical solutions, and beneficial effects of the present application clearer and more understandable, the embodiments of the present application will be described below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0048] As Figure 1As shown in the figure, an embodiment of the present application provides a method for reporting channel state information, which is applied to the UE (User Equipment) side and includes:

[0049] S101. Receive the reference signal sent by the base station side;

[0050] S102. Report the channel state information to the base station according to the first type of reporting configuration signaling associated with the reference signal, where the reported channel state information needs to meet the constraints of a predetermined or the first type of reporting configuration signaling.

[0051] Furthermore, the base station side carries the reference signal by transmitting a beam, while the UE side receives the reference signal by receiving a beam. Furthermore, the feedback of the channel state information is used to implement the selection of (analog) transmission beams (or the selection of transceiver beam pairs) and the joint determination of digital transmitter precoding.

[0052] Among them, the reference signal at least includes one of the following:

[0053] 1) Channel State Information - Reference Signal (CSI - RS)

[0054] 2) Channel State Information - Interference Measurement Signal (CSI - IM)

[0055] 3) Demodulation Reference Signal (DMRS)

[0056] 4) Downlink Demodulation Reference Signal (DL DMRS)

[0057] 5) Uplink Demodulation Reference Signal (UL DMRS)

[0058] 6) Sounding Reference Signal (SRS)

[0059] 7) Phase Tracking Reference Signal (PT - RS)

[0060] 8) Random Access Channel Signal (RACH)

[0061] 9) Synchronization Signal (SS)

[0062] 10) Synchronization Signal Block (SS block)

[0063] 11) Primary Synchronization Signal (PSS)

[0064] 12) Secondary Synchronization Signal (SSS)

[0065] The beam can be a type of resource (such as a transmit - end spatial filter, a receive - end spatial filter, transmit - end precoding, receive - end precoding, antenna port, antenna weight vector, antenna weight matrix, etc.). The beam number can be replaced by a resource index (such as a reference signal resource index) because the beam can be bound to some time - frequency code resources for transmission. The beam can also be a type of transmission (transmit / receive) mode; the said transmission mode can include spatial division multiplexing, frequency - domain / time - domain diversity, etc.

[0066] In addition, the base station can perform a Quasi co - location configuration for two reference signals and inform the UE side. The parameters involved in the Quasi co - location at least include Doppler spread, Doppler shift, delay spread, average delay, average gain, and spatial parameters; among them, the spatial parameters can include spatial reception parameters, such as angle of arrival, spatial correlation of the receive beam, average delay, and correlation of the time - frequency channel response (including phase information).

[0067] Figure 2 This is a schematic diagram of a transceiver structure for hybrid precoding (hybrid analog - digital beamforming) in an embodiment of this application. The transmit - end and receive - end are configured with multi - antenna array units (i.e., antenna panels), and each antenna panel contains multiple transceiver antennas and multiple radio - frequency links (i.e., TXRU). Each radio - frequency link is interconnected with the antenna array unit (excluding the scenario of partial connection). Each antenna unit and the TXRU have a digital - keyed phase shifter. By loading different phase - shift amounts on the signals of each antenna unit, the high - frequency - band system realizes analog - end beamforming. Specifically, in the hybrid beamforming transceiver, there are multiple radio - frequency signal streams. Each signal stream is loaded with an AWV (antenna weight vector) through a digital - keyed phase shifter and is sent from the multi - antenna unit to the high - frequency - band physical propagation channel; at the receive - end, the radio - frequency signal streams received by the multi - antenna unit are weighted and combined into a single signal stream. After radio - frequency demodulation at the receive - end, the receiver finally obtains multiple received signal streams, which are digitally base - band sampled and received. Therefore, the hybrid precoding (hybrid analog - digital beamforming) transceiver can simultaneously generate radio - frequency beams pointing in multiple directions.

[0068] Meanwhile, there may be multiple panels at the transmit - end and receive - end to better support spatial division multiplexing and reduce hardware implementation complexity. Therefore, under each panel, the number of effective beams is asymmetric with the maximum number of transmit beams that can be actually supported, that is, the number of beams that can be transmitted at each moment, that is, the number of TXRUs, is much smaller than the number of selectable beams.

[0069] From the perspective of the base station, the antenna array unit can generate Nmax beams. However, at any given time, only N beams can be generated. For example, the antenna array unit can generate 16 beams, but only one beam can be transmitted at a time. However, there is no restriction on the transmission of beams between different panels, so kN beams can be generated simultaneously, where k represents the number of panels at the base station. From the perspective of the interaction between the base station and the UE, for the feedback of channel state information, it is necessary to repeatedly consider whether the currently transmitted reference signal can be transmitted simultaneously. For example, if the UE feeds back the combined PMI / CQI information for two transmission beams, but if the two transmission beams cannot be transmitted together (e.g., from the same antenna panel), then such feedback of channel state information is meaningless.

[0070] Figure 3 This is a schematic diagram of reference signal transmission and channel-related information feedback for the embodiments of this application. The reference signal transmitter sends the reference signal resource configuration and the first type of report configuration signaling to the reference signal receiver, and sends the reference signal to the reference signal receiver. Among them, the reference signal resource configuration and the report configuration signaling are jointly used to constrain the reporting of channel state information.

[0071] Furthermore, for the reference signal, the configuration framework adopts a multi-layer structure, as Figure 3 shown. The report configuration (i.e., Reporting setting, also known as Reporting config) is associated with one or more reference signal resource configurations (i.e., CSI Resource setting, or multiple reference signal resource configurations); and each reference signal resource configuration (CSI resource setting) includes k reference signal resource sets (CSI resource set); and each reference signal resource set (CSI resource set) includes multiple CSI-RS resources or SS blocks, where each reference signal resource includes several ports, or port groups. Through this multi-layer structure, the base station can effectively restrict its configuration limitations at different layers. In the embodiments of this application, the reference signal includes N reference signal resource configurations, each of the reference signal resource configurations includes M reference signal resource sets, each of the reference signal resource sets includes K reference signal resources, and each of the reference signal resources includes L reference signal ports;

[0072] where N, M, K, and L are integers greater than or equal to 1.

[0073] Further, the channel state information includes a first type of channel state information set and a second type of channel state information set. Among them, the first type of channel state information set includes at least one or a combination of the following: reference signal resource index (RS resource index), reference signal resource set index (RS resource set index), reference signal resource configuration index (RS resource setting index), report configuration index (Report configuration index), reference signal port group index (port group index), reference signal port group set index (port group set index), rank indicator information (Rank indicator, RI). Among them, the elements in the first type of channel state information set are wideband parameters or partial-band parameters (wideband parameters refer to those that can cover all relevant bandwidths for this feedback event; while partial-band parameters refer to those that can act on a part of the bandwidth for the entire feedback event); the second type of channel state information set includes at least one or a combination of the following: reference signal resource index (RS resource index), reference signal port group set index (port group set index), reference signal port group index (port group index), rank indicator information (Rank indicator, RI), precoding matrix indicator information (Precoding matrix indicator, PMI), channel quality indicator information (Channel quality indicator, CQI), layer indicator information (Layer indicator, LI), port index (port index), amplitude coefficient, phase coefficient, reference signal received power.

[0074] In an embodiment of the present application, the first type of channel state information set includes I subsets of the first type of state information set. Among them, each subset of the first type of state information set includes at least one of the following: reference signal resource index, reference signal resource set index, reference signal resource configuration index, report configuration index, reference signal port group index, reference signal port group set index, port index, rank indicator information;

[0075] The second type of channel state information set includes J subsets of the second type of state information set, where each subset of the second type of state information set includes at least one of the following: reference signal resource index, reference signal port group set index, reference signal port group index, rank indication information, precoding matrix indication information, channel state indication information, port index, amplitude coefficient, phase coefficient, reference signal received power;

[0076] Where I and J are integers greater than or equal to 1.

[0077] Furthermore, in the first type of channel state information set, at least one or a combination of the following information is constrained, that is, the report needs to meet the following conditions. For example, the base station requires the user equipment to report two reference signal resource sets (corresponding to two different panels), and the number of reference signal resource indexes under the reference signal resource sets (for example, report 1 reference signal resource index under each set):

[0078] A0 reference signal resource set indexes; or,

[0079] A1 reference signal resource indexes; or,

[0080] A2 reference signal port group indexes;

[0081] Where A0, A1, and A2 are integers greater than or equal to 0.

[0082] Furthermore, the first type of reporting configuration signaling configures at least one of the following parameters:

[0083] A0, A1, A2.

[0084] On the other hand, the base station may not be able to accurately determine which panel the UE will select the beam from, or the ratio of the beams under the selected multiple panels. In this case, the base station can impose constraints by restricting the upper limit or the lower limit of the number of reported reference signal resource indexes under a reference signal resource set. Furthermore, in this case, the base station needs to clarify the total number of reported reference signal indexes, and this number can also be reflected by A0 / A1 / A2 described above, that is, the global number.

[0085] Specifically, the first type of channel state information set includes at least one of the following:

[0086] At most B0 reference signal resource set indexes, or no less than C0 reference signal resource set indexes;

[0087] At most B1 reference signal indexes, or no less than C1 reference signal indexes;

[0088] At most B2 reference signal port group indexes, or no less than C2 reference signal port group indexes;

[0089] Wherein, B0, C0, B1, C1, B2, and C2 are integers greater than or equal to 0.

[0090] Furthermore, the first type of reporting configuration signaling configures at least one of the following parameters: B0, C0, B1, C1, B2, C2.

[0091] Embodiment 1

[0092] This embodiment illustrates the process of differentiating different panels / TRPs from the reference signal configuration:

[0093] In the configuration of multiple reference signal configurations, different reference signal configurations can correspond to different panels / TRPs. In this case, the following grouping criteria can be used to differentiate different panels / TRPs:

[0094] Under different reference signal resource configurations, the port indexes, reference signal port group indexes, reference signal resource indexes, or reference signal resource set indexes under the different reference signal resource configurations can be reported;

[0095] For the same reference signal resource configuration, that is, under the same reference signal resource configuration, no more than U0 or U0 reference signal port indexes, or no more than U1 or U1 reference signal port group indexes, or no more than U2 or U2 reference signal resource indexes, or no more than U3 or U3 reference signal resource set indexes, or no more than U4 or U4 reference signal resource set indexes under the reference signal resource configuration can be reported;

[0096] Wherein, U0, U1, U2, U3, and U4 are integers greater than or equal to 1. For example, U0 = 1, or U1 = 1, or U2 = 1, or U3 = 1, or U4 = 1.

[0097] Furthermore, in the case of 3 panels, the base station can configure three reference signal resource configurations, and then each reference signal resource configuration includes a reference signal resource set for periodic channel measurement, and a reference signal set contains R reference signal resources (where each reference signal resource corresponds to a transmit beam and includes multiple reference signal antenna ports). Therefore, considering that only one reference signal can be transmitted simultaneously within a panel, and different reference signals cannot be transmitted simultaneously, the following user equipment (UE) reporting criteria are as follows:

[0098] Under the same reference signal resource configuration, only one reference signal resource can be reported, i.e., U2 = 1, which is the index information of the reference signal resource;

[0099] Under different reference signal resource configurations, that is, when selecting from different reference signal resource configurations, different reference signal resources can be reported.

[0100] Furthermore, the first type of reporting configuration signaling configures at least one of the following parameters:

[0101] U0, U1, U2, U3, U4.

[0102] Alternatively, for the panel or TRP at the base station side, only the port index, reference signal port group index, reference signal resource index, or reference signal resource set index under the same reference signal resource configuration can be reported; and the port index, reference signal port group index, reference signal resource index, or reference signal resource set index under different reference signal resource configurations cannot be reported.

[0103] Embodiment 2

[0104] This embodiment illustrates the process of distinguishing different panels / TRPs from the reference signal resource set:

[0105] When configuring multiple reference signal resource sets, different reference signal sets can be used for corresponding different panels / TRPs. In this case, different panels / TRPs can be distinguished by the following grouping criteria:

[0106] Under different reference signal resource sets, the port index, reference signal port group index, or reference signal resource index under the different reference signal resource configurations can be reported;

[0107] Under the same reference signal resource set, no more than V0 or V0 reference signal port indexes, no more than V1 or V1 reference signal port group indexes, no more than V2 or V2 reference signal port group set indexes, or no more than V3 or V3 reference signal resource indexes under the reference signal resource configuration can be reported;

[0108] Among them, V0, V1, V2, and V3 are integers greater than or equal to 1. For example, V0 = 1, or V1 = 1, or V2 = 1, or V3 = 1.

[0109] Furthermore, in the case of 3 TRPs, the base station can configure three sets of reference signal resources, and each set of reference signal resources includes R reference signal resources (where each reference signal resource corresponds to a transmission beam and includes multiple reference signal antenna ports). Therefore, considering that only one reference signal can be transmitted simultaneously by one TRP and different reference signals cannot be transmitted simultaneously, the following user equipment (UE) reporting criteria are as follows:

[0110] In the same set of reference signal resources, only one reference signal resource can be reported, that is, V2 = 1, which is the index information of the reference signal resource;

[0111] In different sets of reference signal resources, that is, selecting from different sets of reference signal resources, different reference signal resources can be reported.

[0112] Furthermore, the first type of reporting configuration signaling configures at least one of the following parameters: V0, V1, V2, V3.

[0113] Alternatively, for the selection of the panel or TRP at the base station side, the following grouping criteria include at least one of the following or a combination:

[0114] Only the port index, reference signal port group index, or reference signal resource index under the same set of reference signal resources can be reported;

[0115] The port index, reference signal port group index, or reference signal resource index under different sets of reference signal resources cannot be reported.

[0116] Embodiment 3

[0117] This embodiment illustrates the process of distinguishing TRPs based on reference signal configuration and different panels based on reference signal resource sets:

[0118] Furthermore, for the above-mentioned grouping criteria regarding reference signal configuration and reference signal resource sets, joint configuration can be performed. For example, if it is desired to select TRPs and multiple beams can be selected for the panels under one TRP, the following criteria are as follows:

[0119] Only the port index, reference signal port group index, reference signal resource index, or reference signal resource set index under the same reference signal resource configuration can be reported;

[0120] Under different reference signal resource sets, the port index, reference signal port group index, or reference signal resource index under the different reference signal resource configurations can be reported;

[0121] Under the same set of reference signal resources, one reference signal resource index under the configuration of the reference signal resources can be reported;

[0122] Moreover, the port index, reference signal port group index, reference signal resource index, or reference signal resource set index under different configurations of reference signal resources cannot be reported.

[0123] Embodiment 4

[0124] In this embodiment, different TRP and panel characteristics can be reflected by means of reference signal resources, specifically as follows:

[0125] Under different reference signal resources, the port index or reference signal port group index under the configuration of the different reference signal resources can be reported;

[0126] Under the same set of reference signal resources, no more than W0 or W0 reference signal port indexes, no more than W1 or W1 reference signal port group indexes, or no more than S1 or S1 reference signal port group set indexes under the configuration of the reference signal resources can be reported;

[0127] Among them, W0, W1, and S1 are integers greater than or equal to 1, and the first type of reporting configuration signaling configures the parameters W0, W1, and S1.

[0128] Alternatively, the following second grouping method can be used:

[0129] Only the port index or reference signal port group index under the same set of reference signal resources can be reported;

[0130] The port index or reference signal port group index under different sets of reference signal resources cannot be reported.

[0131] Embodiment 5

[0132] In this embodiment, different TRP and panel characteristics can be reflected by forming a set of reference signal port groups.

[0133] First, at the UE side, determine the set of port groups; among them, the set of port groups is composed of one or more port groups. Further, the set of port groups includes one or a combination of the following characteristics:

[0134] Under different sets of port groups, the port index or reference signal port group index under the configuration of the different reference signal resources can be reported;

[0135] Under the same set of port groups, no more than W2 or W2 reference signal port indexes, or no more than W3 or W3 reference signal port group indexes under the configuration of the reference signal resources can be reported;

[0136] Wherein, W2 and W3 are integers greater than or equal to 1.

[0137] Wherein, the set of port groups is determined by a predefined rule or configured by a second communication node;

[0138] Alternatively, the set of port groups has the following characteristics that need to be satisfied for the UE to perform channel state information reporting.

[0139] Only the port index or the reference signal port group index under the same set of port groups can be reported;

[0140] The port index or the reference signal port group index under different sets of port groups cannot be reported;

[0141] Furthermore, the predefined rule includes at least one of the following:

[0142] According to the port group number, every F1 port groups form a set of port groups in sequence;

[0143] According to the odd and even port group numbers, the port groups are divided into two sets of port groups;

[0144] According to the port group number, all port groups are divided into F2 sets of port groups;

[0145] Wherein, the parameter F1 or F2 is configured by the second communication node, i.e., the base station side.

[0146] Embodiment Six

[0147] The first type of channel state information feedbacks the corresponding TRP, panel and beam information, and the feedback of digital precoding needs to be fed back through the second type of channel state information. Therefore, it is necessary to clarify the association information between the subset in the first type of channel state information set and the subset in the second type of channel state information set.

[0148] For example, the first type of channel state information includes two subsets, each subset includes a CRI and a resourceset index, and the subset of the second type of channel state information, such as two PMIs, needs to correspond to the two subsets of the first type of channel state information respectively. Wherein, the PMI contains the precoding information on each layer, but the CRI needs to be mapped to all precodings. Furthermore, the feedback determination of the CRI is based on the feedback resource set index, and the feedback of the resourceset index is based on the feedback RS setting index.

[0149] Further, by using a bitmap field (or referred to as a bit field, bitmap, or bitstring), the association information between a subset in the first type of channel state information set and a subset in the second type of channel state information set can be indicated, or,

[0150] report the layer information associated with the subset in the first type of channel state information set, or,

[0151] report the layer information associated with the subset in the second type of channel state information set.

[0152] Further, the bit field is associated with a subset in the first type of channel state information set, and when the bit position is a first predetermined value, it indicates the subset in the second type of channel state information set associated with the bit position; or,

[0153] the bit field is associated with a subset in the first type of channel state information set and is also associated with a subset in the second type of channel state information set, and the bit position information of the bit field indicates the associated layer information;

[0154] Or, further, the bitmap field is associated with a subset in the second type of channel state information set, and when the bit position is a second predetermined value, it indicates the subset in the first type of channel state information set associated with the bit position;

[0155] wherein, the number or the upper limit of the number of specific values in the bit field is configured by the second communication node;

[0156] Further, the number of specific values in the bitmap field associated with each subset in the first type of channel state information set is the same; or, the number of specific values in the bitmap field associated with each subset in the second type of channel state information set is the same; further, there is an association relationship between the internal elements of the subset in the second type of channel state information set, and they are sequentially mapped to the elements with specific values in the bitmap.

[0157] wherein, the optional number of subsets or elements of the first type of channel state information determines the number of feedback bits of the subset or element.

[0158] Further, it further includes at least one of the following: the association information is layer indication information.

[0159] For example, considering the limitation of the transmission beam, Nsimu_max CRI(s) can be selected and applied to some of the layers. Therefore, Nsimu_max + 1 information can be selected for each layer, where the first information indicates that no CRI can be used for this layer.

[0160] Alternatively, for example, the method of using a bitmap to perform layer indication is used to associate CRI with PMI, amplitude information, and phase coefficients, as shown in the following table. It should be noted that if the layer indication information, also known as the associated layer information, is represented as 1, it means it is associated with the corresponding layer, and then the corresponding amplitude indication information, phase indication information, and port indication information are selected to read the port and the corresponding amplitude and phase precoding feedback under this CRI.

[0161]

[0162] Furthermore, in the case of beam (L1-RSRP) reporting, RSRP is the second type of channel state information, while the reference signal resource set index and the reference signal resource index are the first type of channel state information, as shown in the following table.

[0163]

[0164] Therefore, for the problem of joint reporting of multiple base stations (or TRPs), multiple panels, analog domain beams, and digital domain beams involved in this patent, it is achieved through the feedback of the first type of channel state information, the feedback of the second type of channel state information, and the associated information of the first type and the second type of channel state information, such as a bitmap. Furthermore, the information of multiple base stations (or TRPs), multiple panels, and analog domain beams is fed back through the first type of channel state information, while the digital domain related information is fed back through the second type of channel state information. Finally, the two types of information are correlated with each other through the association relationship for joint reporting, such as the layer indication information in the above table.

[0165] Embodiment Seven

[0166] As Figure 5As shown, the embodiments of the present application also provide another schematic diagram of reference signal configuration, where the reporting configuration is associated with the CSI resource setting. The CSI resource setting includes a total of k CSI resource sets. Each CSI resource set contains n CSI resources, and each CSI resource contains m port groups, and each port group contains 4 ports. From the perspective of the base station, different ports correspond to different digital beams, different port groups correspond to different analog beams, and different CSI resources correspond to different panels or subarrays. In addition, different TRP levels are distinguished by different CSI resource sets.

[0167] From the perspective of channel state information reporting, the first type of channel state information set is composed of "reference signal resource index, reference signal resource set index, reference signal port group index, rank indication information", and the second type of channel state information is composed of "channel state indication information, amplitude coefficient, phase coefficient".

[0168] Furthermore, from the perspective of the reporting criterion, it is desired to select one of the TRPs, and then for multiple panels under the TRP, at most one port combination is selected for each panel. Furthermore, there are the following reporting constraints:

[0169] From the perspective of the reference signal resource set, only report the reference signal resource index under the same reference signal resource set; do not report the reference signal resource index under different reference signal resource sets;

[0170] From the perspective of the reference signal resource, under different reference signal resources, report the reference signal port group index under the different reference signal resources; under the same reference signal resource, report W1 = 1 reference signal port group index under the reference signal resource;

[0171] The layer indication information is associated with the reported port group and is associated with the second type of channel state information.

[0172] Further, the channel state information is reported as shown in the following table. Among them, the layer indication information and the first type of channel state information are broadband information, while the second type of channel state information is sub-band information. In the case of RI = 4, a reference signal resource set is first selected, and under this reference signal set, a reference signal port group is selected for each of the two different resources. Further, the layer indication information (bit map) is used to indicate the association relationship between the first type of channel state information subset - 1, that is, {CRI - 1, Port group - 3}, and the first type of channel state information subset - 2, that is, {CRI - 2, Port group - 1}, and the second type of channel state information.

[0173]

[0174] Among them, it should be noted that for the amplitude coefficient and the phase coefficient, relevant information needs to be provided for each port under the corresponding reference signal port group and the corresponding layer. For example, when the selected reference signal port group has 4 ports and the associated layer is 2 layers (determined by the number of non-zero elements in the layer indication information), provide {P 0,0 ,P 0,1 ,P 0,2 ,P 0,3} — layer 0, {P 1,0 ,P 1,1 ,P 1,2 ,P 1,3} — layer 1, {A 0,0 ,A 0,1 ,A 0,2 ,A 0,3} — layer 0, {A 1,0 ,A 1,1 ,A 1,2 ,A 1,3} — layer 1.

[0175] Example VIII

[0176] As Figure 6As shown in the figure, the embodiment of the present application further provides a schematic diagram of a reference signal port group set. Among them, each CSI resource set contains n CSI resources, each CSI resource contains x port group sets, and each port group set includes 2 port groups, and each port group contains 4 ports. From the perspective of the base station, different ports correspond to different digital beams, different port groups correspond to different analog beams, different port group sets correspond to the refinement of analog beams, and different CSI resources correspond to different panels or subarrays. In addition, different TRP levels are distinguished by different CSI resource sets.

[0177] From the perspective of channel state information reporting, the first type of channel state information set is composed of "reference signal resource index, reference signal resource set index, reference signal port group set index, reference signal port group index, rank indication information", and the second type of channel state information is composed of "channel state indication information, amplitude coefficient, phase coefficient".

[0178] Furthermore, from the perspective of reporting criteria, it is desired to select one of the TRPs. Then, for multiple panels under a TRP, only one port combination can be selected for each beam refinement group under a panel, but different beam refinement groups can select different port combinations. Furthermore, there are the following reporting constraints:

[0179] From the perspective of the reference signal resource set, only report the reference signal resource index under the same reference signal resource set; do not report the reference signal resource index under different reference signal resource sets;

[0180] From the perspective of the reference signal resource, report the different reference signal port group set indexes under different reference signal resources; report the S1 = 2 reference signal port group set indexes under the same reference signal resource;

[0181] From the perspective of the reference signal port group set, report the port index or the reference signal port group index under different reference signal resource configurations under different port group sets; report the W3 = 1 reference signal port group index under the same port group set under the reference signal resource configuration;

[0182] The layer indication information is associated with the reported reference signal resource index, and the index information below it and itself are all associated with the second type of channel state information.

[0183] Further, the channel state information is reported as shown in the following table. Among them, the layer indication information and the first type of channel state information are broadband information, while the second type of channel state information is sub-band information. In the case of RI = 4, a reference signal resource set is first selected, and under this reference signal set, a set of reference signal port groups is selected under two different resources. Further, a reference signal port group is selected from each set of port groups. Further, the layer indication information (bit map) is used to indicate the association relationship between the first type of channel state information subset - 1, i.e., {CRI - 1}, and the first type of channel state information subset - 2, i.e., {CRI - 2}, and the second type of channel state information.

[0184]

[0185] Embodiment Nine

[0186] As Figure 7 shown, an embodiment of the present application further provides a reporting device for channel state information, which is set in a first communication node and includes:

[0187] A receiving module, configured to receive a reference signal sent by a second communication node;

[0188] A processing module, configured to determine and report a first type of channel state information set and / or a second type of channel state information set to the second communication node according to a first type of reporting configuration signaling associated with the reference signal;

[0189] Wherein, the first type of channel state information set includes at least one of the following:

[0190] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0191] The second type of channel state information set includes at least one of the following:

[0192] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0193] Wherein, the reference signal includes N reference signal resource configurations, the reference signal resource configuration includes M reference signal resource sets, the reference signal resource set includes K reference signal resources, and the reference signal resource includes L reference signal ports;

[0194] Wherein, N, M, K, and L are integers greater than or equal to 1.

[0195] Embodiment Ten

[0196] As Figure 8 shown, an embodiment of the present application further provides a method for receiving channel state information, which is applied to a second communication node (base station side) and includes:

[0197] S201. Send a reference signal to a first communication node (UE side);

[0198] S202. Receive a first type of channel state information set and / or a second type of channel state information set determined by the UE side according to first type of reporting configuration signaling associated with the reference signal;

[0199] Wherein, the first type of channel state information set includes at least one of the following:

[0200] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0201] The second type of channel state information set includes at least one of the following:

[0202] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0203] In this embodiment, the reference signal includes N reference signal resource configurations, the reference signal resource configuration includes M reference signal resource sets, the reference signal resource set includes K reference signal resources, and the reference signal resource includes L reference signal ports;

[0204] Wherein, N, M, K, and L are integers greater than or equal to 1.

[0205] In this embodiment, the received first type of channel state information set and / or second type of channel state information set includes at least one of the following:

[0206] The first type of channel state information set includes: I first type of state information set subsets,

[0207] Wherein, each first type of state information set subset includes at least one of the following: reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0208] Or, the second type of channel state information set includes: J second type of state information set subsets,

[0209] Wherein, each subset of the second type of channel state information set includes at least one of the following: precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power;

[0210] Wherein, I and J are integers greater than or equal to 1.

[0211] In this embodiment, the first type of channel state information set further includes broadband parameters or partial broadband parameters.

[0212] In this embodiment, the first type of channel state information set includes at least one of the following:

[0213] A0 reference signal resource set indexes; or,

[0214] A1 reference signal resource indexes; or,

[0215] A2 reference signal port group indexes;

[0216] Wherein, A0, A1, and A2 are integers greater than or equal to 0.

[0217] In this embodiment, the first type of reporting configuration signaling configures at least one of the following parameters:

[0218] A0, A1, A2.

[0219] In this embodiment, the first type of channel state information set includes at least one of the following:

[0220] At most B0 reference signal resource set indexes, or no less than C0 reference signal resource set indexes; or, at most B1 reference signal indexes, or no less than C1 reference signal indexes; or, at most B2 reference signal port group indexes, or no less than C2 reference signal port group indexes;

[0221] Wherein, B0, C0, B1, C1, B2, and C2 are integers greater than or equal to 0.

[0222] In this embodiment, the first type of reporting configuration signaling configures at least one of the following parameters:

[0223] B0, C0, B1, C1, B2, C2.

[0224] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0225] Under different reference signal resource configurations, report the port indexes, reference signal port group indexes, reference signal port group set indexes, reference signal resource indexes, or reference signal resource set indexes under the different reference signal resource configurations;

[0226] Under the same reference signal resource configuration, the number of reference signal port indices is no more than U0 or U0, the number of reference signal port group indices is no more than U1 or U1, the number of reference signal port group set indices is no more than U2 or U2, the number of reference signal resource indices is no more than U3 or U3, or the number of reference signal resource set indices is no more than U4 or U4;

[0227] Among them, U0, U1, U2, U3, and U4 are integers greater than or equal to 1.

[0228] In this embodiment, the first type of reporting configuration signaling configures at least one of the following parameters:

[0229] U0, U1, U2, U3, U4.

[0230] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0231] Only report the port index, reference signal port group index, reference signal port group set index, reference signal resource index, or reference signal resource set index under the same reference signal resource configuration;

[0232] Do not report the port index, reference signal port group index, reference signal port group set index, reference signal resource index, or reference signal resource set index under different reference signal resource configurations.

[0233] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0234] Under different reference signal resource sets, report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under the different reference signal resource sets;

[0235] Under the same reference signal resource set, report the number of reference signal port indices no more than V0 or V0, the number of reference signal port group indices no more than V1 or V1, the number of reference signal port group set indices no more than V2 or V2, or the number of reference signal resource indices no more than V3 or V3;

[0236] Among them, V0, V1, V2, and V3 are integers greater than or equal to 1.

[0237] In this embodiment, the first type of reporting configuration signaling configures at least one of the following parameters:

[0238] V0, V1, V2, V3.

[0239] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0240] Only report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under the same reference signal resource set;

[0241] Do not report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under different reference signal resource sets.

[0242] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0243] Under different reference signal resources, report the port index, reference signal port group index, or reference signal port group set index under the different reference signal resources;

[0244] Under the same reference signal resource, report no more than W0 or W0 reference signal port indexes, no more than W1 or W1 reference signal port group indexes, or no more than S1 or S1 reference signal port group set indexes under the reference signal resource;

[0245] Wherein, W0, W1, and S1 are integers greater than or equal to 1.

[0246] In this embodiment, the configuration parameters of the first type of reporting configuration signaling are at least one of the following

[0247] W0, W1, S1.

[0248] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0249] Only report the port index, reference signal port group index, or reference signal port group set index under the same reference signal resource;

[0250] Do not report the port index, reference signal port group index, or reference signal port group set index under different reference signal resources.

[0251] In this embodiment, the received first type of channel state information set and / or second type of channel state information set further includes:

[0252] Determine the port group set;

[0253] Wherein, the port group set includes one or more port groups.

[0254] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0255] Under different port group sets, report the port index or the reference signal port group index under different reference signal resource configurations described in the report;

[0256] Under the same port group set, report no more than W2 or W2 reference signal port indexes or no more than W3 or W3 reference signal port group indexes under the reference signal resource configuration described;

[0257] Wherein, W2 and W3 are integers greater than or equal to 1.

[0258] In this embodiment, the port group set is obtained by at least one of the following methods:

[0259] Determine the port group set through a predefined rule or the configuration of a second communication node.

[0260] In this embodiment, the first type of reporting configuration signaling is configured according to at least one of the following rules:

[0261] Only report the port index or the reference signal port group index under the same port group set;

[0262] Do not report the port index or the reference signal port group index under different port group sets.

[0263] In this embodiment, the predefined rule includes at least one of the following:

[0264] According to the port group serial number, every F1 port groups form a port group set in sequence;

[0265] According to the odd and even port group serial numbers, form two port group sets for the port groups;

[0266] Divide all the port groups into F2 port group sets;

[0267] Wherein, F1 and F2 are integers greater than or equal to 1.

[0268] In this embodiment, configure at least one of the following parameters by the second communication node:

[0269] F1, F2.

[0270] In this embodiment, the method further includes:

[0271] Receive the association information between the subset in the first type of channel state information set and the subset in the second type of channel state information set reported by the first communication node, or,

[0272] Receive the layer information associated with the subset in the first type of channel state information set reported by the first communication node, or,

[0273] Receive the layer information associated with the subset in the second type of channel state information set reported by the first communication node.

[0274] As Figure 9 shown, an embodiment of the present application further provides a reporting device for channel state information, which is set in the first communication node (base station side) and includes:

[0275] A sending module, configured to send a reference signal to the first communication node;

[0276] An aggregation module, configured to receive a first type of channel state information set and / or a second type of channel state information set determined by the first communication node according to the first type of reporting configuration signaling associated with the reference signal;

[0277] Wherein, the first type of channel state information set includes at least one of the following:

[0278] Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information;

[0279] The second type of channel state information set includes at least one of the following:

[0280] Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power.

[0281] In summary, based on the technical solution provided by the embodiment of the present application, it supports the reference signal receiving end to report its own capabilities. Furthermore, the reference signal sending end can indicate beam reporting under beam grouping or satisfying user capabilities, and at the same time solves the problem of collision between beam-related reports and traditional channel state information reports. Especially for device rotation and link occlusion, it supports the reference signal receiving end to request the reference signal sending end to perform beam training for some beam links, thus effectively solving the problem of efficient beam-related information reporting for different base stations and user capabilities and different scenarios.

[0282] Although the disclosed embodiments of the present application are as above, the content thereof is only an embodiment adopted for facilitating the understanding of the technical solution of the present application, and is not used to limit the present application. Any person skilled in the art within the technical field to which the present application belongs can make any modifications and changes in the form and details of the implementation without departing from the core technical solution disclosed by the present application. However, the protection scope defined by the present application shall still be subject to the scope defined by the appended claims.

Claims

1. A method for reporting channel state information, characterized in that Applied to a first communication node, the first communication node including a user equipment; comprising: Receiving a reference signal sent by a second communication node; Determining and reporting to the second communication node a first type of channel state information set or a first type of channel state information set and a second type of channel state information set according to a first type of reporting configuration signaling associated with the reference signal, the second communication node including a base station; Wherein, the first type of channel state information set includes at least one of the following: Reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information; The second type of channel state information set includes at least one of the following: Precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power; Wherein, reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node is based on the following rules: Under different reference signal resource configurations, reporting the reference signal resource index under the different reference signal resource configurations; Under the same reference signal resource configuration, reporting no more than U3 or U3 reference signal resource indexes under the reference signal resource configuration, where U3 is an integer greater than or equal to 1; The different reference signal resource configurations correspond to different base station panels.

2. The method according to claim 1, wherein The reference signal includes N reference signal resource configurations, the reference signal resource configuration includes M reference signal resource sets, the reference signal resource set includes K reference signal resources, and the reference signal resource includes L reference signal ports; Wherein, N, M, K, and L are integers greater than or equal to 1.

3. The method according to claim 1, wherein The first type of channel state information set or the first type of channel state information set and the second type of channel state information set reported to the second communication node includes at least one of the following: The first type of channel state information set includes: I first type of state information set subsets, Wherein, each of the first type of state information set subsets includes at least one of the following: reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information; Or, the second type of channel state information set includes: J second type of state information set subsets, Wherein, each of the second type of state information set subsets includes at least one of the following: precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power; Wherein, I and J are integers greater than or equal to 1.

4. The method according to claim 3, wherein The first type of channel state information set further includes broadband parameters or partial broadband parameters.

5. The method according to claim 3, characterized in that, The first type of channel state information set includes at least one of the following: A0 reference signal resource set indexes; A1 reference signal resource indexes; A2 reference signal port group indexes; Wherein, A0, A1, and A2 are integers greater than or equal to 0; the first type of reporting configuration signaling configures at least one of the following parameters: A0, A1, A2.

6. The method according to claim 3, wherein The first type of channel state information set includes at least one of the following: At most B0 reference signal resource set indices, or not less than C0 reference signal resource set indices; At most B1 reference signal indices, or not less than C1 reference signal indices; At most B2 reference signal port group indices, or not less than C2 reference signal port group indices; Wherein, B0, C0, B1, C1, B2, and C2 are integers greater than or equal to 0; the first type of reporting configuration signaling configures at least one of the following parameters: B0, C0, B1, C1, B2, C2.

7. The method according to claim 1, characterized in that, The first type of reporting configuration signaling configures the following parameter: U3.

8. The method according to claim 1, characterized in that, Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Only report the port index, reference signal port group index, reference signal port group set index, reference signal resource index, or reference signal resource set index under the same reference signal resource configuration; Do not report the port index, reference signal port group index, reference signal port group set index, reference signal resource index, or reference signal resource set index under different reference signal resource configurations.

9. The method according to claim 1, wherein Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Under different reference signal resource sets, report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under the different reference signal resource sets; Under the same reference signal resource set, report no more than V0 or V0 reference signal port indices, no more than V1 or V1 reference signal port group indices, no more than V2 or V2 reference signal port group set indices, or no more than V3 or V3 reference signal resource indices; Wherein, V0, V1, V2, and V3 are integers greater than or equal to 1.

10. The method according to claim 1 or 9, characterized in that, The first type of reporting configuration signaling configures at least one of the following parameters: V0, V1, V2, V3.

11. The method according to claim 1, characterized in that, Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Only report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under the same reference signal resource set; Do not report the port index, reference signal port group index, reference signal port group set index, or reference signal resource index under different reference signal resource sets.

12. The method according to claim 1, wherein Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Under different reference signal resources, report the port index, reference signal port group index, or reference signal port group set index under the different reference signal resources described in the report; Under the same reference signal resource, report no more than W0 or W0 reference signal port indexes, no more than W1 or W1 reference signal port group indexes, or no more than S1 or S1 reference signal port group set indexes under the reference signal resource described in the report; Wherein, W0, W1, and S1 are integers greater than or equal to 1; the configuration parameters of the first type of reporting configuration signaling are at least one of the following: W0, W1, S1.

13. The method according to claim 1, wherein Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Only report the port index, reference signal port group index, or reference signal port group set index under the same reference signal resource; Do not report the port index, reference signal port group index, or reference signal port group set index under different reference signal resources.

14. The method according to claim 1, wherein Determining and reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node further includes: Determine the port group set; Wherein, the port group set includes one or more port groups.

15. The method according to claim 14, characterized in that, Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Under different port group sets, report the port index or reference signal port group index under different reference signal resource configurations; Under the same port group set, report no more than W2 or W2 reference signal port indexes or no more than W3 or W3 reference signal port group indexes under the reference signal resource configuration described in the report; Wherein, W2 and W3 are integers greater than or equal to 1.

16. The method according to claim 14, wherein Determining the port group set includes: Determine the port group set through a predefined rule or the configuration of the second communication node; Wherein, the predefined rule includes at least one of the following: According to the port group serial number, every F1 port groups form a port group set in sequence; According to the odd and even port group serial numbers, the port groups are formed into two port group sets; Divide all port groups into F2 port group sets; F1 and F2 are integers greater than or equal to 1; Configure at least one of the following parameters by the second communication node: F1, F2.

17. The method according to claim 14, wherein Reporting the first type of channel state information set or the first type of channel state information set and the second type of channel state information set to the second communication node also follows at least one of the following rules: Only report the port index or reference signal port group index under the same port group set; Do not report the port index or reference signal port group index under different port group sets.

18. The method according to claim 3, characterized in that, The method further includes at least one of the following: Report the association information between the subset in the first type of channel state information set and the subset in the second type of channel state information set; Report the layer information associated with the subset in the first type of channel state information set; Report the layer information associated with the subset in the second type of channel state information set; Among them, a bit field is used to indicate the association information between a subset in the first type of channel state information set and a subset in the second type of channel state information set, or to indicate the layer information associated with the subset in the first type of channel state information set, or to indicate the layer information associated with the subset in the second type of channel state information set; Among them, when the bit position in the bit field is a first predetermined value, it indicates association.

19. The method according to claim 18, wherein It includes one of the following indications: The bit field is associated with a subset in the first type of channel state information set, and when the bit position is the first predetermined value, it indicates association with the subset in the second type of channel state information set associated with the bit position; The bit field is associated with a subset in the first type of channel state information set and is associated with a subset in the second type of channel state information set, and the bit position information of the bit field indicates the associated layer information; The bit field is associated with a subset in the second type of channel state information set, and when the bit position is the first predetermined value, it indicates association with the subset in the first type of channel state information set associated with the bit position.

20. The method according to claim 18, characterized in that, The first predetermined value or the upper limit of the first predetermined value in the bit field is configured by the second communication node.

21. The method according to claim 18, wherein, the number of specific values in the bit field associated with each subset in the first type of channel state information set is the same; or, the number of specific values in the bit field associated with each subset in the second type of channel state information set is the same.

22. The method according to claim 1, wherein The optional number of subsets or elements of the first type of channel state information determines the number of feedback bits of the subsets or elements.

23. A method for receiving channel state information, characterized in that, Applied to a second communication node, the second communication node includes a base station; it includes: sending a reference signal to a first communication node; receiving the first type of channel state information set or the first type of channel state information set and the second type of channel state information set determined by the first communication node according to the first type of reporting configuration signaling associated with the reference signal, the first communication node includes a user equipment; Among them, the first type of channel state information set includes at least one of the following: reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information; The second type of channel state information set includes at least one of the following: precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power; Among them, the first type of reporting configuration signaling is configured according to the following rules: Under different reference signal resource configurations, receiving reference signal resource indexes from different reference signal resource configurations; Under the same reference signal resource configuration, receiving no more than U3 or U3 reference signal resource indexes from the reference signal resource configuration, where U3 is an integer greater than or equal to 1; The different reference signal resource configurations correspond to different base station panels.

24. The method according to claim 23, wherein The received first type of channel state information set or the first type of channel state information set and the second type of channel state information set includes at least one of the following: The first type of channel state information set includes: I subsets of the first type of state information set, wherein each subset of the first type of state information set includes at least one of the following: reference signal resource index, reference signal resource set index, reference signal resource configuration index, reporting configuration index, reference signal port group index, reference signal port group set index, port index, rank indication information; Alternatively, the second type of channel state information set includes: J subsets of the second type of state information set, wherein each subset of the second type of state information set includes at least one of the following: precoding matrix indication information, channel state indication information, amplitude coefficient, phase coefficient, reference signal received power; wherein I and J are integers greater than or equal to 1.

25. The method according to claim 24, wherein The method further includes: receiving the association information between the subset in the first type of channel state information set and the subset in the second type of channel state information set reported by the first communication node, or, receiving the layer information associated with the subset in the first type of channel state information set reported by the first communication node, or, receiving the layer information associated with the subset in the second type of channel state information set reported by the first communication node.

Images