Channel state information reporting, receiving method, communication node and storage medium

Abstract

The application provides a channel state information reporting method, a receiving method, a communication node and a storage medium. The channel state information reporting method receives configuration information, the configuration information including first configuration information and second configuration information, the first configuration information being used for indicating the position of a channel state information reference signal resource, and the second configuration information being used for indicating the reporting parameter of channel state information; the channel state information reference signal is received according to the first configuration information; and the channel state information is reported according to the second configuration information and the measurement of the channel state information reference signal.

Description

Technical Field

[0001] This application relates to wireless communication networks, such as a channel state information reporting, receiving method, communication node, and storage medium. Background Technology

[0002] The channel state information (CSI) reporting process in a wireless communication system includes: the base station transmits a channel state information reference signal (CSI-RS); the terminal measures the CSI-RS; the terminal determines the CSI with the base station and reports it to the base station; and the base station determines the data transmission strategy and transmits data based on the channel state represented by the CSI, thereby improving data transmission efficiency and communication quality. The accuracy of the channel state represented by the CSI affects the base station's transmission strategy, thus affecting data transmission efficiency and communication quality. Multiple CSI-RS and multiple demodulation reference signals (DM-RS) exist in a single time slot. If the number of time domain (Orthogonal Frequency Division Multiplexing, OFDM) symbols occupied by a CSI-RS in a time slot is large, it is prone to collisions with DM-RS transmissions. Since the time domain resources carrying CSI-RS are fixed, to reduce the chance of collisions between CSI-RS and DM-RS, the scheduling opportunities for CSI-RS must be reduced. The inflexible scheduling and transmission of CSI-RS affects the efficiency and performance of the system's CSI reporting. Summary of the Invention

[0003] This application provides a channel state information reporting, receiving method, communication node, and storage medium, which improves the efficiency and performance of CSI reporting by flexibly indicating the location of CSI-RS resources and the reporting parameters of CSI.

[0004] This application provides a channel state information reporting method, including:

[0005] Receive configuration information, the configuration information including first configuration information and second configuration information, the first configuration information being used to indicate the location of channel state information reference signal resources, and the second configuration information being used to indicate the reporting parameters of channel state information;

[0006] The channel state information reference signal is received according to the first configuration information;

[0007] The channel state information is reported based on the second configuration information and the measurement of the channel state information reference signal.

[0008] This application also provides a method for receiving channel state information, including:

[0009] Send configuration information, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of the channel state information reference signal resource, and the second configuration information is used to indicate the reporting method of the channel state information.

[0010] The channel state information reference signal is sent according to the first configuration information;

[0011] Receive channel status information according to the second configuration information.

[0012] This application also provides a communication node, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the channel state information reporting method or the channel state information receiving method described above.

[0013] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the aforementioned channel state information reporting method or channel state information receiving method. Attached Figure Description

[0014] Figure 1 A flowchart illustrating a channel state information reporting method as provided in one embodiment;

[0015] Figure 2 A flowchart illustrating a channel state information receiving method as provided in one embodiment;

[0016] Figure 3 This is a schematic diagram of the structure of a channel state information reporting device provided in one embodiment;

[0017] Figure 4 This is a schematic diagram of the structure of a channel state information receiving device according to one embodiment;

[0018] Figure 5 This is a schematic diagram of the hardware structure of a communication node provided in one embodiment. Detailed Implementation

[0019] The present application will now be described in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and not intended to limit it. It should be noted that, unless otherwise specified, the embodiments and features described herein can be arbitrarily combined with each other. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present application are shown in the accompanying drawings, not the entire structure.

[0020] In OFDM technology, the smallest unit in the frequency domain is a subcarrier, and the smallest unit in the time domain is an OFDM symbol. For frequency domain resources, a resource block (RB) is defined as a specific number of consecutive subcarriers, and a bandwidth part (BWP) is defined as another specific number of consecutive resource blocks on a carrier; for time domain resources, a slot is defined as another specific number of consecutive OFDM symbols.

[0021] The reference signals transmitted from the base station to the terminal are downlink reference signals. In Long Term Evolution (LTE) systems, the downlink reference signals used for channel state information reporting include cell-specific reference signals (CRS) and CSI-RS. In NR systems, the downlink reference signals used for channel state information reporting include CSI-RS. CSI-RS is carried by a Channel State Information Reference Signal Resource (CSI-RS Resource), which is composed of Code Division Multiplexing Groups (CDM Groups). A CDM Group consists of radio resource elements, and the multiplexing method of CSI-RS ports on a CDM Group is code division multiplexing.

[0022] The CSI (Channel Quality Indicator) transmitted by the terminal to the base station includes a Channel Quality Indicator (CQI) to indicate the channel quality; it may also include a Precoding Matrix Indicator (PMI) to indicate the precoding matrix applied to the base station antenna. One type of CQI reporting format is Wideband CQI Reporting, which reports a channel quality for the entire CSI Reporting Band. Another type of CQI reporting format is Subband CQI Reporting, which provides channel quality for each subband of the CSI Reporting Band, with one channel quality corresponding to one subband. A subband is a frequency domain unit, defined as N consecutive resource blocks, where N is a positive integer. In this embodiment, a subband is also called a Channel Quality Indicator subband or a CQI subband. A bandwidth block (BWP) is divided into sub-bands, and the channel state information (CSA) reporting band is defined using a subset of these sub-bands. The CSA reporting band is the band where CSA information needs to be reported.

[0023] Similarly, one type of PMI reporting format is the wideband PMI report, which reports one PMI for the entire channel state information reporting band. Another type of PMI reporting format is the sub-band PMI report, which reports one PMI for each sub-band of the channel state information reporting band, or reports a component of a PMI for each sub-band of the channel state information reporting band. For example, if a PMI consists of X1 and X2, one way to report a component of a PMI for each sub-band of the channel state information reporting band is to report one X1 for the entire band and one X2 for each sub-band, or to report one X1 and one X2 for each sub-band. Yet another type of PMI reporting format indicates that the reported PMI indicates R precoding matrices for each sub-band, where R is a positive integer. From the perspective of the frequency domain granularity of the feedback precoding matrix, R can also be understood as the number of precoding matrix sub-bands included in each sub-band.

[0024] In the CSI reporting process of a wireless communication system, the CSI-RS resources used to carry CSI-RS, and the mechanism by which the terminal feeds back CSI to the base station, affect the accuracy of channel state feedback and the base station's transmission strategy, thus impacting data transmission efficiency and communication quality. Since the resources carrying CSI-RS and the mechanism for feeding back CSI are fixed, related technologies, in order to ensure reliable CSI-RS transmission and avoid collisions with other signals or data, can only reduce the scheduling opportunities for CSI-RS, making CSI-RS scheduling and transmission inflexible.

[0025] In this application embodiment, a channel state information reporting method is provided, which can be applied to a terminal. Figure 1 A flowchart of a channel state information reporting method provided in one embodiment is shown below. Figure 1 As shown, the method provided in this embodiment includes steps 110 to 130.

[0026] In step 110, configuration information is received, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of the channel state information reference signal resource, and the second configuration information is used to indicate the reporting parameters of the channel state information.

[0027] In step 120, the channel state information reference signal is received according to the first configuration information.

[0028] In step 130, channel state information is reported based on the second configuration information and the measurement of the channel state information reference signal.

[0029] In this embodiment, the first configuration information is used to indicate the location of CSI-RS resources. For example, CSI-RS resources include multiple CDM groups, and the first configuration information is used to indicate the frequency domain subcarrier position and time domain OFDM symbol position of each CDM group, the CDM group with index number 0, or each CDM group. The second configuration information is used to indicate CSI reporting parameters. For example, when the terminal reports PMI to the base station, the second configuration information includes parameters corresponding to the precoding matrix, such as the number of CSI-RS ports, the index number of the DFT vector corresponding to the precoding matrix, and / or the parameters of the DFT vector group corresponding to the precoding matrix.

[0030] Based on this, the terminal receives CSI-RS on the corresponding CSI-RS resources according to the instructions of the first configuration information, and reports CSI to the base station according to the instructions of the second configuration information, providing feedback on the channel status. This improves the flexibility of CSI-RS scheduling and transmission, simplifies the complexity of the CSI reporting process, and improves the efficiency and performance of CSI reporting.

[0031] In one embodiment, the CSI-RS resource includes K CDM groups, where K is a positive integer; the first configuration information includes frequency domain subcarrier position parameters and time domain OFDM symbol position parameters of the CDM groups.

[0032] In this embodiment, CSI-RS is carried by CSI-RS resources, which consist of K CDM groups. The positions of the CDM groups are determined by... It means that, among them, Represents the position of the frequency domain subcarrier. Represents the position of the OFDM symbol in the time domain. Indicated by the first configuration information.

[0033] In one embodiment, the candidate locations for CSI-RS resources include the following eight cases:

[0034] Scenario 1: The number of CSI-RS ports is 32 and the CDM group size is 2, K=16; the positions of the K CDM groups are (k0,l0), (k1,l0), (k2,l0), (k3,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k3,l0+1), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k3+12,l0), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+12,l0+1); the corresponding CDM group index numbers are... The numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; or, the positions of the K CDM groups are (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k3, l0+1), (k0+12, l0+1), (k1+12, l0+1), (k2+12, l0+1), (k3+12, l0+1). The CDM group index numbers corresponding to the K CDM groups are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15, respectively. In the parentheses (,), the first parameter represents the frequency domain subcarrier position of the CDM group, and the second parameter represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, l0 is the time domain OFDM symbol position parameter, and k... i The values ​​of (i = 0, 1, 2, 3) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0035] Scenario 2: The number of CSI-RS ports is 32 and the CDM group size is 4, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the CDM group index numbers corresponding to the K CDM groups are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, l0 is the time domain OFDM symbol position parameter, k i The values ​​of (i = 0, 1, 2, 3) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0036] Scenario 3: The number of CSI-RS ports is 32 and the CDM group size is 8, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0037] Case 4: The number of CSI-RS ports is 24 and the CDM group size is 2, K=12; the positions of the K CDM groups are: (k0,l0), (k1,l0), (k2,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1); or, (k0,l0), (k1,l0), (k2,l0), (k0+12,l0), (k (k1+12,l0), (k2+12,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1, 2) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0038] Case 5: The number of CSI-RS ports is 24 and the CDM group size is 4, K = 6; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1, 2) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0039] Case 6: The number of CSI-RS ports is 24 and the CDM group size is 8, K = 3; the positions of the K CDM groups are (k0, l0), (k1, l0), and (k0+12, l0); the corresponding CDM group index numbers are 0, 1, and 2 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0040] Case 7: The number of CSI-RS ports is 16 and the CDM group size is 2, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1, 2, 3) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0041] Case 8: The number of CSI-RS ports is 16 and the CDM group size is 4, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter. i The values ​​of (i = 0, 1) and l0 are given by the first configuration information, thereby indicating the position of the aforementioned CDM group through the first configuration information. This indicates the location of the CSI-RS.

[0042] It should be noted that multiple CSI-RS and multiple DM-RS typically exist in a single time slot. If a CSI-RS occupies a large number of time-domain OFDM symbols within a time slot, it is prone to colliding with DM-RS. In New Radio (NR) systems, CSI-RS occupy a large number of time-domain OFDM symbols. For example, a 32-port CSI-RS or a 24-port CSI-RS may be configured on 4 OFDM symbols, and a 16-port CSI-RS may be configured on 2 OFDM symbols. To avoid collisions with DM-RS, the scheduling opportunities for CSI-RS and / or DM-RS must be reduced. The eight candidate positions described above in this embodiment can halve the number of OFDM symbols occupied by 32-port CSI-RS, 24-port CSI-RS, and 16-port CSI-RS. Even without reducing scheduling opportunities, it can reduce the chance of collision between CSI-RS and DM-RS. The first configuration information can indicate the position of the CDM group in any CSI-RS port scenario, thereby increasing the flexibility of scheduling CSI-RS with different port numbers.

[0043] In one embodiment, the channel state information reference signal resource includes K CDM groups, where K is a positive even number; in the K CDM groups, the position of the CDM group with index number 0 differs from the position of the CDM group with index number K / 2 by Q frequency domain resource blocks, and they have the same time domain OFDM symbol position. The Q frequency domain resource blocks contain M frequency domain subcarriers, where Q and M are positive integers; the first configuration information includes the frequency domain subcarrier position parameters and the time domain OFDM symbol position parameters of the CDM group with index number 0.

[0044] In this embodiment, the first configuration information indicates the time-frequency position (k0, l0) of the CDM group with index number 0. The CDM group with index number K / 2 differs from the CDM group with index number 0 by Q frequency domain resource blocks and has the same time-domain OFDM symbol position. That is, they occupy different frequency domain resource blocks, but the number of time-domain OFDM symbols occupied is halved. Here, M is the number of frequency domain subcarriers contained in the Q resource blocks, K is a positive even number, and the values ​​of k0 and l0 are indicated by the first configuration information. It should be noted that if all CDM groups are crowded on the same resource block, they tend to occupy more OFDM symbols; while if they are distributed on different resource blocks, they tend to occupy fewer OFDM symbols. In this embodiment, M represents the number of frequency domain subcarriers contained in Q resource blocks. The difference between the position of the CDM group with index number K / 2 (k0+M, l0) and the position of the CDM group with index number 0 (k0, l0) is Q resource blocks. That is, placing the CDM group with index number K / 2 and the CDM group with index number 0 on different resource blocks reduces the overhead of radio resources occupied by CSI-RS and provides an opportunity to save the number of OFDM symbols occupied in the time domain.

[0045] In one embodiment, the first configuration information includes two time-domain OFDM symbol position parameters of the channel state information reference signal resource; when the difference between the two time-domain OFDM symbol position parameters is less than 2, the time-domain position of the channel state information reference signal resource is determined according to one of the time-domain OFDM symbol position parameters; when the difference between the two time-domain OFDM symbol position parameters is greater than or equal to 2, the time-domain position of the channel state information reference signal resource is determined according to the two time-domain OFDM symbol position parameters.

[0046] In this embodiment, the first configuration information indicates the positions of two time-domain OFDM symbols, denoted as l0 and l1 respectively. Based on this, the position of CSI-RS is indicated according to the difference between l0 and l1. For example, if the difference between l0 and l1 is large enough, there are enough available time-domain OFDM symbols, and the chance of CSI-RS colliding with other signals is low. There is no need to halve the time-domain OFDM symbols, and the CSI-RS resource configuration in the NR system can be used. If the difference between l0 and l1 is small, the above eight candidate positions are used to carry CSI-RS to reduce the chance of collision.

[0047] The following explanation uses the following examples to illustrate the different CDM group sizes selected for 32-port CSI-RS, 24-port CSI-RS, and 16-port CSI-RS.

[0048] If l1-l0 < 2, the following locations of CSI-RS resources can be indicated for different numbers of ports:

[0049] 1) The CSI-RS has 32 ports, the CDM group size is 4, K=8, and the positions of the K CDM groups are... They are respectively: (k0,l0),(k1,l0),(k2,l0),(k3,l0),(k0+12,l0),(k1+12,l0),(k2+12,l0),(k3+12,l0), where k i The values ​​of (i = 0, 1, 2, 3) and l0 are given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS (i.e., case two above);

[0050] 2) The CSI-RS has 24 ports, the CDM group size is 4, K=6, and the positions of K CDM groups are... They are respectively: (k0,l0),(k1,l0),(k2,l0),(k0+12,l0),(k1+12,l0),(k2+12,l0), where k iThe values ​​of (i = 0, 1, 2) and l0 are given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS; (i.e., case five above);

[0051] 3) The CSI-RS has 16 ports, the CDM group size is 4, K=4, and the positions of the K CDM groups are... They are respectively:

[0052] (k0,l0),(k1,l0),(k0+12,l0),(k1+12,l0), where k i The values ​​of (i = 0, 1) and l0 are given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS; (i.e., case eight above).

[0053] If l1-l0≥2, the following locations of CSI-RS resources can be indicated for different numbers of ports:

[0054] 1) The CSI-RS has 32 ports, the CDM group size is 4, and there are 8 CDM group locations. They are respectively: (k0,l0),(k1,l0),(k2,l0),(k3,l0),(k0,l1),(k1,l1),(k2,l1),(k3,l1), where k i (i = 0, 1, 2, 3) and l j The value of (j = 0, 1) can be given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS;

[0055] 2) Corresponding to a port count of 24, a CDM group size of 4, and the location of 6 CDM groups. They are respectively: (k0,l0),(k1,l0),(k2,l0),(k0,l1),(k1,l1),(k2,l1), where k i (i = 0, 1, 2) and l j The value of (j = 0, 1) can be given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS;

[0056] 3) Corresponding to a port count of 16, a CDM group size of 4, and the positions of the 4 CDM groups. They are respectively: (k0,l0), (k1,l0), (k0,l1), (k1,l1), where k i(i = 0, 1) and l j The value of (j = 0, 1) can be given by the first configuration information, which indicates the position of the aforementioned CDM group. This indicates the location of the CSI-RS.

[0057] It should be noted that in this embodiment, the difference between the position parameters of two time-domain OFDM symbols indicates different candidate positions of CSI-RS, and resources at different positions are used to carry CSI, so as to ensure the diversity of candidate positions of CSI-RS and improve the flexibility of CSI-RS scheduling.

[0058] In one embodiment, the CSI-RS resource includes T groups of CDM groups; the first configuration information includes a non-zero-power channel state information reference signal resource information element (NZP-CSI-RS-Resource IE), which includes T channel state information reference signal resource mapping elements (CSI-RS-Resource Mapping IE), and each channel state information reference signal resource mapping element is used to indicate the location of a group of CDM groups.

[0059] In this embodiment, the location of CSI-RS resources is a combination of the locations of T-group and CDM-group.

[0060] Taking T=2 as an example, the first Channel State Information Reference Signal Resource Mapping (CSI-RS) element indicates the location of the first CDM group, which includes J1 CDM groups; the second CSI-RS element indicates the location of the second CDM group, which includes J2 CDM groups; in this case, the location of the CSI-RS resource includes the locations of J1+J2 CDM groups. The number of CDM groups in each group can be equal or unequal.

[0061] For example, the first channel state information reference signal resource mapping element indicates the location of the first group of CDM groups, including the locations of J CDM groups; the second channel state information reference signal resource mapping element indicates the location of the second group of CDM groups, including the locations of J CDM groups; the location of the channel state information reference signal is the location of 2J CDM groups.

[0062] In one embodiment, the channel state information reporting method further includes:

[0063] Step 112: Determine the channel state information reference signal port number based on the CDM group index number: p = N + s + jK; where K represents the size of the CDM group, j represents the index number of the CDM group, s represents the code sequence index number used for code division multiplexing of the channel state information reference signal on the CDM group with index number j, s is a non-negative integer less than K, and N is the starting number of the channel state information reference signal port, N is a non-negative integer; where the first channel state information reference signal resource mapping element indicates the position of the first group of CDM groups, including the positions of J1 CDM groups, and the index numbers of the J1 CDM groups are mapped to 0, 1, ..., J1-1; the second channel state information reference signal resource mapping element indicates the position of the second group of CDM groups, including the positions of J2 CDM groups, and the index numbers of the J2 CDM groups are mapped to J1, J1+1, ..., J1+J2-1; where j is a non-negative integer less than J1+J2.

[0064] In this embodiment, before reporting CSI, the terminal can determine the number of the CSI-RS port according to the index number of the CDM group used to carry CSI indicated by the first configuration information. The multiplexing method of CSI-RS on these CSI-RS ports is code division multiplexing.

[0065] Taking T=2 as an example, the first channel state information reference signal resource mapping element indicates the position of the first group of CDM groups, including the positions of J1 CDM groups, and the index numbers of the J1 CDM groups are mapped to 0, 1, ..., J1-1; the second channel state information reference signal resource mapping element indicates the position of the second group of CDM groups, including the positions of J2 CDM groups, and the index numbers of the J2 CDM groups are mapped to J1, J1+1, ..., J1+J2-1; the position of the channel state information reference signal is the position of the CDM group with index numbers 0, 1, ..., J1+J2-1.

[0066] The CSI-RS port number is determined based on the mapped CDM group index number 0,1,...,J1+J2-1: p=N+s+jK; where j is the mapped CDM group index number, with values ​​of 0,1,...,J1+J2-1; K is the size of the CDM group; s is the code sequence index number used for code division multiplexing of the signal on port number p on CDM group number j, with values ​​of 0,1,...,K-1; N is the starting number of the channel state information reference signal port, for example, N is 3000.

[0067] For example, the first Channel State Information Reference Signal Resource Mapping (CMS) element indicates the location of the first CDM group, including the locations of J CDM groups, with the index numbers of the CDM groups mapped to 0, 1, ..., J-1; the second CMS element indicates the location of the second CDM group, including the locations of J CDM groups, with the index numbers of the CDM groups mapped to J, J+1, ..., 2J-1; the location of the Channel State Information Reference Signal is the location of the CDM group with index numbers 0, 1, ..., 2J-1.

[0068] The CSI-RS port number is determined based on the mapped CDM group index number 0, 1, ..., 2J-1: p = N + s + jK; where j is the mapped CDM group index number, with values ​​of 0, 1, ..., 2J-1; K is the size of the CDM group; s is the code sequence index number used for code division multiplexing of the signal on port number p on CDM group number j, with values ​​of 0, 1, ..., K-1; N is the starting number of the channel state information reference signal port, for example, N is 3000.

[0069] Based on this, the first CDM group corresponds to P1 CSI-RS ports, and the numbers of the P1 CSI-RS ports are mapped to N, N+1, ..., N+P1-1; the second CDM group corresponds to P2 CSI-RS ports, and the numbers of the P2 CSI-RS ports are mapped to N+P1, N+P1+1, ..., N+P1+P2-1.

[0070] In one embodiment, the channel state information reporting method further includes:

[0071] Step 114: Calculate the number of channel state information processing units (CSI-RS) occupied by the receiving CSI-RS based on the first configuration information. The number of CSI-RS occupied by the receiving CSI-RS is T.

[0072] In this embodiment, before reporting CSI, the terminal can calculate the number of channel state information processing units occupied by the receiving CSI-RS based on the number of CDM groups indicated by the first configuration information or the number of channel state information reference signal resource mapping elements. The number of channel state information processing units occupied by the receiving CSI-RS is T.

[0073] It should be noted that the terminal's reception and reporting of CSI-RS must be within its own capabilities. By analyzing the workload of the terminal in receiving CSI-RS and accurately calculating the number of channel state information processing units required, the performance of reception and reporting can be improved, avoiding operational failures and crashes. In this embodiment, the non-zero power channel state information reference signal resource information element includes T channel state information reference signal resource mapping elements. Therefore, during the CSI-RS reception process, the terminal arranges T channel state information processing units to receive the CSI-RS carried on the channel state information reference signal resources. This ensures the accuracy of the CSI processing unit measurement during the reception process and avoids insufficient preparation or waste of channel state information processing units.

[0074] In one embodiment, CSI includes PMI, wherein the precoding matrix is ​​determined based on a first set of vectors and a second set of vectors; wherein the first set of vectors includes L vectors and the second set of vectors includes M vectors. v Vectors, L, M v It is a positive integer.

[0075] In this embodiment, the terminal reports a Precoding Matrix Indicator (PMI) to the base station, which indicates the precoding matrix applied to the base station antenna. The terminal determines the precoding matrix based on a first set of vectors and a second set of vectors and instructs it to the base station via the PMI. After receiving the PMI, the base station can recover the precoding matrix based on the first and second sets of vectors. In this embodiment, the first set of vectors includes L vectors, and the second set of vectors includes M vectors. v A vector.

[0076] In this embodiment, the precoding matrix is ​​W, consisting of W1, W2, and W... f Composition, for example W = W1W2W f H Where W1 is a matrix composed of the L vectors mentioned above, W f It is the M v A matrix consisting of vectors, W f H It is W f The transpose conjugate matrix, W2, is the sum of the L vectors and the M vectors. v LM composed of vectors v A matrix consisting of the coefficients of vector pairs.

[0077] In one embodiment, corresponding to M v The second group of vectors consists of the DFT vector with index 0 and the vector with index 2. The DFT vector; where the index number is The elements in the DFT vector are represented as t is a non-negative integer less than N3, where N3 is the number of precoding matrices.

[0078] In this embodiment, t is the index number of an element in the DFT vector, taking values ​​from 0, 1, ..., N³-1. t can also represent the index number of the precoding matrix. The power of the precoding matrix is ​​mainly concentrated in the DFT vector with index number 0, and the DFT vectors that are close to the DFT vector with index number 0 in terms of index number (i.e., those with index number 0). (The DFT vector). In one embodiment, The precoding indicator is selected from 1 and N3-1; the second configuration information is selected from 1 and N3-1; or it is determined based on the number of precoding matrix subbands included in each channel quality indicator (CQI) subband.

[0079] In this embodiment, corresponding to M v The value is 2, and there are three ways to determine it.

[0080] Method 1: Index number is The DFT vector can be a DFT vector with index 1 or index N3-1. The terminal can select the DFT vector from these two values, 1 and N3-1, using a precoding indicator. Choose a value.

[0081] Method 2: Index number is The DFT vector can be a DFT vector with index number 1 or index number N3-1. The base station can select the DFT vector from these two values, 1 and N3-1, using the second configuration information. Choose a value.

[0082] Method 3: The value range of is determined by R, where R represents the number of precoding matrix subbands included in each CQI subband. A portion of the precoding power is concentrated on the DFT vector with index 0, and another portion is mainly concentrated on the DFT vectors within the index range determined by R. For example, The value of is an integer within the interval [-R, -1], or represented by a positive index as an integer within the interval [N3-R, -1]. For example, The value of is an integer within the interval [1, R]. For example, The value range is an integer other than 0 within the interval [-R / 2, R / 2]. For example, The value of is an integer within the union of the interval [1, R / 2] and the interval [N3-R / 2, N3-1].

[0083] In one embodiment, M v The format of the channel quality indicator is 1, which indicates that the format is the broadband channel quality indicator format.

[0084] In this embodiment, the channel quality indicator format includes a wideband channel quality indicator format (corresponding to a wideband CQI report) and a subband channel quality indicator format (corresponding to a subband CQI report); corresponding to M v A value of 1 indicates that the channel is typically flat in the frequency domain. By adopting the wideband channel quality indicator format, the overhead of reporting channel quality indicators can be saved.

[0085] In one embodiment, the channel state information reporting method further includes:

[0086] Step 122: Determine M based on at least one of P and L. v Where P is the number of CSI-RS ports.

[0087] In this embodiment, the precoding matrix can be determined based on a first set of vectors and a second set of vectors. The first set of vectors includes L vectors, and the second set of vectors includes M vectors. v The terminal or base station can determine M based on the number of CSI-RS ports P and / or L. v In this context, P and / or L can be indicated as CSI reporting parameters via the second configuration information.

[0088] In one embodiment, M v Meet at least one of the following:

[0089] Corresponding to P being greater than or equal to the first threshold (i.e., P ≥ Th1, where Th1 is the first threshold), M v It is 2;

[0090] Corresponding to P being less than or equal to the second threshold (i.e., P ≤ Th2, where Th2 is the second threshold), M v It is 2;

[0091] Corresponding to P belonging to the first interval or the first set (i.e., the value of P is within the first interval P∈[E1,E1'], where E1<E1'; or P∈U1, where U1 is the first set, and the first set contains at least one specified number of ports), M v It is 2;

[0092] Corresponding to L being greater than or equal to the third threshold (i.e., L≥Th3, where Th3 is the third threshold), M v It is 2;

[0093] Corresponding to L being less than or equal to the fourth threshold (i.e., L ≤ Th4, where Th4 is the fourth threshold), M v It is 2;

[0094] Corresponding to L belonging to the second interval or the second set (i.e., the value of L is within the second interval P∈[E2,E2'], where E2<E2'; or P∈U2, where U2 is the second set, and the second set contains at least one specified number of vectors), M v It is 2;

[0095] Corresponding to a ratio of L to P greater than or equal to the fifth threshold (i.e., L / P ≥ Th5, where Th5 is the fifth threshold), M v It is 2;

[0096] When the ratio of L to P is less than or equal to the sixth threshold (i.e., L / P ≤ Th6, where Th6 is the sixth threshold), M v It is 2;

[0097] The ratio of L to P corresponds to the third interval or the third set (i.e., the value of L / P is within the third interval L / P∈[E3,E3'], where E3<E3'; or P∈U3, where U3 is the third set, and the third set contains at least one specified ratio), M v The value is 2. Where P is the number of CSI-RS ports and L is the number of DFT vectors contained in the first group of vectors.

[0098] In one embodiment, M is determined based on the number R of precoding matrix subbands included in each Channel Quality Indicator (CQI) subband. v The value of M. In one embodiment, M v The value of M is directly proportional to R. In another embodiment, M v The value is the product of R and a coefficient. In yet another embodiment, M v The value of is equal to R.

[0099] In one embodiment, the channel state information reporting method further includes: step 124: according to M v The value determines L vectors.

[0100] In this embodiment, the first set of vectors includes L vectors, and the mapping relationship between the L vectors and P CSI-RS ports is based on M. v The value is determined. In one embodiment, the mapping relationship between the CSI-RS port and L vectors satisfies: with M v Corresponding to >1, each port in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each of the L ports in the CSI-RS port system, which in turn corresponds to a vector; or, with M v Corresponding to >1, each of the L ports in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each port in the CSI-RS port, which corresponds to a vector.

[0101] In this embodiment, corresponding to M v >1, P CSI-RS ports are mapped to L vectors, where each port is mapped to one vector, L = P; corresponding to M v =1, select L ports from P ports, and map the L ports to L vectors, where each port is mapped to one vector.

[0102] Or, corresponding to M v >1, select L ports from P ports, the L ports are mapped to L vectors, and one port is mapped to one vector; corresponding to M v =1, P ports are mapped to L vectors, and one port is mapped to one vector, L=P.

[0103] In one embodiment, PMI is used to indicate L+M v LM composed of vectors v The non-zero coefficients in the coefficients of each vector pair, where the maximum number of non-zero coefficients in each layer is K0, where K0 is a positive integer.

[0104] In this embodiment, the precoding matrix can be determined based on a first set of vectors and a second set of vectors. The first set of vectors includes L vectors, and the second set of vectors includes M vectors. v There are 1 vector, and two sets of vectors can form an LM. v A vector pair, PMI is used to indicate LM v The non-zero coefficients among the coefficients of a vector pair.

[0105] In one embodiment, P is the number of CSI-RS ports, and L is determined according to one of the following:

[0106] L is determined based on P and the first coefficient (denoted as λ). The second configuration information includes the number of CSI-RS ports P and λ, where λ is a positive number.

[0107] L equals P.

[0108] In one embodiment, P is the number of CSI-RS ports, and the maximum value K0 of the number of non-zero coefficients at each layer is determined according to one of the following:

[0109] K0 is determined by the product of L and the second coefficient (denoted as α), where α is a positive number and the second configuration information includes α.

[0110] K0 is determined by the product of P and the third coefficient (denoted as γ), where γ is a positive number, and the second configuration information includes γ;

[0111] K0 is determined based on P;

[0112] K0 equals L;

[0113] K0 equals P.

[0114] In one embodiment, P is the number of CSI-RS ports, and the second configuration information includes a combination parameter η, which indicates one of the following:

[0115] η is used to indicate L and α, where α is a positive number. In this case, K0 is determined based on the product of L and α.

[0116] η is used to indicate P and γ, where γ is a positive number. In this case, K0 is determined based on the product of P and γ.

[0117] η is used to indicate P, λ, and α, where λ is a positive number, α is a positive number, L is determined based on P and λ, and K0 is determined based on the product of L and λ.

[0118] In this embodiment, P, λ, α and / or γ are the contents indicated by the combined parameter η, and one or more of these parameters can be indicated as reporting parameters through the second configuration information.

[0119] In one embodiment, the channel state information reporting method further includes: step 126: according to M v Determine the content indicated by the combined parameters.

[0120] In this embodiment, P, λ, α, and / or γ are the contents indicated by the combination parameter η, and the contents indicated by the combination parameter can be determined according to M. v The value is determined.

[0121] In one embodiment, with M v =1 corresponds to the combination parameters used to indicate P, λ, and α, and M v Corresponding to >1, the combined parameter is used to indicate P and γ;

[0122] Or, with M v =1 corresponds to the combined parameter used to indicate L and α, and M v Corresponding to >1, the combined parameter is used to indicate P and γ;

[0123] Or, with M v =1 corresponds to the combination parameter used to indicate P and γ, and M v Corresponding to >1, the combined parameters are used to indicate P, λ, and α;

[0124] Or, with M v =1 corresponds to the combination parameter used to indicate P and γ, and M v Corresponding to >1, the combined parameters are used to indicate L and α.

[0125] In one embodiment, the maximum value K0 of the number of non-zero coefficients in each layer is determined according to M. v Confirmed; M vK0 corresponding to a value greater than 1 is M v It equals twice the K0 corresponding to 1.

[0126] For example, for M v =1, K0=a, where a is the maximum number of non-zero coefficients in each layer, then for M v >1, K0 = 2a.

[0127] In one embodiment, the channel state information reporting method further includes: step 140: according to M v The combined value with R reports at least one of the following capabilities or any combination thereof: the maximum number of ports per CSI-RS resource; the maximum number of CSI-RS resources per frequency band; the total number of ports per CSI-RS resource per frequency band; where R represents the number of precoding matrix subbands included in each CQI subband.

[0128] It should be noted that the terminal's reception of CSI-RS and reporting of CSI must be within its own capabilities, and the scheduling tasks performed by the base station for the terminal cannot exceed the terminal's capabilities. In this embodiment, in addition to reporting CSI, the terminal also accurately reports one or more of its own capabilities to ensure the stable performance of CSI-RS scheduling and transmission.

[0129] In one embodiment, M v The combined values ​​with R include at least one of the following combinations: M v R is 1; M is 1. v R is 2, M is 1; v R is 1, M is 2; v R is 2; M is 2. v If R is greater than 1, then R is 1; M v If the value is greater than 1, then R is 2.

[0130] In this embodiment, the terminal can perform one or more M... v The combined value of R reports at least one capability, for example, for M. v =1 and R is 1, M v =2 and R is 1, M v For the three cases where M is 1 and R is 2, the maximum number of ports per CSI-RS resource and the maximum number of CSI-RS resources per frequency band are reported for each case. The terminal reports according to M... v The combined value of R can be used to report one or more of the above capabilities, thereby improving the accuracy and comprehensiveness of the reported capabilities.

[0131] In this embodiment, a channel state information (CSI) receiving method is also provided, which can be applied to a base station on the network side. The terminal reports CSI to the base station using the CSI reporting method described above, and the base station recovers the applicable precoding matrix based on the CSI. Technical details not described in detail in this embodiment can be found in any of the above embodiments.

[0132] Figure 2 A flowchart of a channel state information receiving method provided in one embodiment is shown below. Figure 2 As shown, the method provided in this embodiment includes steps 210 to 230.

[0133] In step 210, configuration information is sent, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of CSI-RS resources, and the second configuration information is used to indicate the reporting parameters of CSI.

[0134] In step 220, CSI-RS is sent according to the first configuration information.

[0135] In step 230, CSI is received according to the second configuration information.

[0136] In this embodiment, the first configuration information is used to indicate the location of CSI-RS resources. For example, CSI-RS resources include multiple CDM groups, and the first configuration information is used to indicate the frequency domain subcarrier position and time domain OFDM symbol position of each CDM group, the CDM group with index number 0, or each CDM group. The second configuration information is used to indicate CSI reporting parameters. For example, when the terminal reports PMI to the base station, the second configuration information includes parameters related to the DFT vector corresponding to the precoding matrix, such as the number of CSI-RS ports, the index number of the DFT vector corresponding to the precoding matrix, and / or the parameters of the DFT vector grouping corresponding to the precoding matrix.

[0137] The base station instructs the terminal to receive CSI-RS on the corresponding CSI-RS resources by sending the first configuration information, and instructs the terminal to report CSI to the base station by sending the second configuration information in order to obtain the channel status. This improves the flexibility of CSI-RS scheduling and transmission, and makes the CSI reporting process more flexible and reliable.

[0138] In one embodiment, the CSI-RS resource includes K CDM groups, where K is a positive integer; the first configuration information includes frequency domain subcarrier position parameters and OFDM symbol position parameters of the CDM groups.

[0139] In one embodiment, with 32 CSI-RS ports and a CDM group size of 2, K = 16; the positions of the K CDM groups are (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k3, l0+1), (k0+12, l0), (k1+12, l0) (k2+12,l0), (k3+12,l0), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; or (k0,l0), (k1,l0) respectively. ), (k2,l0), (k3,l0), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k3+12,l0), (k0,l0+1), ( k1,l0+1), (k2,l0+1), (k3,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+1 2, l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; where, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2 and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0140] In one embodiment, with 32 CSI-RS ports and a CDM group size of 4, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0141] In one embodiment, with 32 CSI-RS ports and a CDM group size of 8, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0142] In one embodiment, with 24 CSI-RS ports and a CDM group size of 2, K = 12; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k0+12, l0+1), (k1+12, l0+1), (k2+12, l0+1); or, (k0, l0), (k1, l0), (k2, l0), (k0+12, l0) (k1+12,l0), (k2+12,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0143] In one embodiment, with 24 CSI-RS ports and a CDM group size of 4, K = 6; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0144] In one embodiment, with 24 CSI-RS ports and a CDM group size of 8, K = 3; the positions of the K CDM groups are (k0, l0), (k1, l0), and (k0+12, l0); the corresponding CDM group index numbers are 0, 1, and 2 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0145] In one embodiment, with 16 CSI-RS ports and a CDM group size of 2, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0146] In one embodiment, with 16 CSI-RS ports and a CDM group size of 4, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0147] In one embodiment, the CSI-RS resources include K CDM groups, where K is a positive even number; among the K CDM groups, the position of the CDM group with index number 0 differs from the position of the CDM group with index number K / 2 by Q frequency domain resource blocks, and they have the same time domain OFDM symbol position. The Q frequency domain resource blocks contain M frequency domain subcarriers, where Q and M are positive integers; the first configuration information includes the frequency domain subcarrier position parameters and the time domain OFDM symbol position parameters of the CDM group with index number 0.

[0148] In one embodiment, the first configuration information includes two time-domain OFDM symbol position parameters of the CSI-RS resource; when the difference between the two time-domain OFDM symbol position parameters is less than 2, the time-domain position of the CSI-RS resource is determined according to one of the time-domain OFDM symbol position parameters; when the difference between the two time-domain OFDM symbol position parameters is greater than or equal to 2, the time-domain position of the CSI-RS resource is determined according to the two time-domain OFDM symbol position parameters.

[0149] In one embodiment, the CSI-RS resources include T groups of CDM groups; the first configuration information includes non-zero power channel state information reference signal resource information elements, and the non-zero power channel state information reference signal resource information elements include T channel state information reference signal resource mapping elements, each channel state information reference signal resource mapping element being used to indicate the location of a group of CDM groups.

[0150] In one embodiment, the CSI-RS port number is determined based on the CDM group index number: p = N + s + jK; where K represents the size of the CDM group, j represents the CDM group index number, s represents the code sequence index number used by the CSI-RS port for code division multiplexing on the CDM group with index number j, s is a non-negative integer less than K, and N is the starting number of the CSI-RS port, N is a non-negative integer; wherein, the first CSI-RS resource mapping element indicates the position of the first CDM group, including the position of J1 CDM groups, and the index numbers of the J1 CDM groups are mapped to 0, 1, ..., J1-1; the second CSI-RS resource mapping element indicates the position of the second CDM group, including the position of J2 CDM groups, and the index numbers of the J2 CDM groups are mapped to J1, J1+1, ..., J1+J2-1; where j is a non-negative integer less than J1+J2.

[0151] In one embodiment, the number of channel state information processing units receiving CSI-RS is the same as the number of CSI-RS resource mapping elements in the first configuration information.

[0152] In one embodiment, the CSI includes a precoding matrix indicator (PMI); the channel state information receiving method further includes:

[0153] Step 240: Determine the precoding matrix based on the first set of vectors and the second set of vectors; wherein the first set of vectors includes L vectors and the second set of vectors includes M vectors. v Vectors, L, M v It is a positive integer.

[0154] In one embodiment, corresponding to M v The second group of vectors consists of the DFT vector with index 0 and the vector with index 2. The DFT vector; where the index number is The elements in the DFT vector are represented as t is a non-negative integer less than N3, where N3 is the number of precoding matrices.

[0155] In one embodiment, The precoding indicator is selected from 1 and N3-1; the second configuration information is selected from 1 and N3-1; or it is determined based on the number of precoding matrix subbands included in each channel quality indicator (CQI) subband.

[0156] In one embodiment, M v The format of the channel quality indicator is 1, which indicates that the format is the broadband channel quality indicator format.

[0157] In one embodiment, the channel state information receiving method further includes: step 212: determining M based on at least one of P and L. v Where P is the number of CSI-RS ports.

[0158] In one embodiment, M v Meet at least one of the following:

[0159] Corresponding to P being greater than or equal to the first threshold, M v It is 2;

[0160] Corresponding to P being less than or equal to the second threshold, M v It is 2;

[0161] Corresponding to P belonging to the first interval or the first set, M v It is 2;

[0162] Corresponding to L being greater than or equal to the third threshold, M v It is 2;

[0163] Corresponding to L being less than or equal to the fourth threshold, M v It is 2;

[0164] Corresponding to L belonging to the second interval or the second set, M v It is 2;

[0165] Corresponding to the ratio of L to P being greater than or equal to the fifth threshold, M v It is 2;

[0166] Corresponding to the ratio of L to P being less than or equal to the sixth threshold, M v It is 2;

[0167] The ratio of L to P corresponds to the third interval or the third set, M v It is 2;

[0168] Where P is the number of CSI-RS ports.

[0169] In one embodiment, the channel state information receiving method further includes: step 214: according to M v The value determines L vectors.

[0170] In one embodiment, the mapping relationship between the CSI-RS port and L vectors satisfies; and with M v Corresponding to >1, each port in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each of the L ports in the CSI-RS port system, which in turn corresponds to a vector; or, with M v Corresponding to >1, each of the L ports in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each port in the CSI-RS port, which corresponds to a vector.

[0171] In one embodiment, PMI is used to indicate L+M v LM composed of vectors v The non-zero coefficients in the coefficients of each vector pair, where the maximum number of non-zero coefficients in each layer is K0, where K0 is a positive integer.

[0172] In one embodiment, L is determined according to one of the following:

[0173] The second configuration information includes P and a first coefficient, where the first coefficient is a positive number, and L is determined based on P and the first coefficient.

[0174] L equals P;

[0175] Where P is the number of CSI-RS ports.

[0176] In one embodiment, K0 is determined according to one of the following:

[0177] K0 is determined by the product of L and the second coefficient, where the second coefficient is a positive number, and the second configuration information includes the second coefficient.

[0178] K0 is determined by the product of P and the third coefficient, where the third coefficient is a positive number, and the second configuration information includes the third coefficient.

[0179] K0 is determined based on P;

[0180] K0 equals L;

[0181] K0 equals P;

[0182] Where P is the number of CSI-RS ports.

[0183] In one embodiment, the second configuration information includes a combination parameter, which indicates one of the following:

[0184] The combined parameter is used to indicate L and the second coefficient, the second coefficient being a positive number, and K0 is determined based on the product of L and the second coefficient;

[0185] The combined parameter is used to indicate P and the third coefficient, which is a positive number. K0 is determined based on the product of P and the third coefficient.

[0186] The combined parameters are used to indicate P, the first coefficient, and the second coefficient. The first coefficient is a positive number, the second coefficient is a positive number, L is determined based on P and the first coefficient, and K0 is determined based on the product of L and the second coefficient.

[0187] Where P is the number of CSI-RS ports.

[0188] In one embodiment, the channel state information receiving method further includes: step 216: according to M v Determine the content indicated by the combined parameters.

[0189] In one embodiment, with M v =1 corresponds to the combination parameter used to indicate P, the first coefficient and the second coefficient, and M. v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0190] With M v =1 corresponds to the combination parameter used to indicate L and the second coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0191] With M v =1 corresponds to the combined parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P, the first coefficient, and the second coefficient; or,

[0192] With M v =1 corresponds to the combination parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate L and the second coefficient.

[0193] In one embodiment, K0 is based on M v Sure;

[0194] M v K0 corresponding to a value greater than 1 is M v It equals twice the K0 corresponding to 1.

[0195] In one embodiment, the channel state information receiving method further includes:

[0196] Step 250: According to M v The combined value of R allows reception of at least one of the following capabilities or any combination thereof: the maximum number of ports per CSI-RS resource; the maximum number of CSI-RS resources per frequency band; the total number of ports per CSI-RS resource per frequency band; where R represents the number of precoding matrix subbands included in each CQI subband.

[0197] In one embodiment, M v The combined values ​​with R include at least one of the following combinations: M v R is 1; M is 1. v R is 2, M is 1; v R is 1, M is 2; v R is 2; M is 2. v If R is greater than 1, then R is 1; M v If the value is greater than 1, then R is 2.

[0198] This application also provides a channel state information reporting device. Figure 3 This is a schematic diagram of a channel state information reporting device provided in one embodiment. Figure 3 As shown, the channel state information reporting device includes:

[0199] The configuration information receiving module 310 is configured to receive configuration information, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of CSI-RS resources, and the second configuration information is used to indicate the reporting parameters of CSI.

[0200] Reference signal receiving module 320 is configured to receive CSI-RS according to the first configuration information;

[0201] Reporting module 330 is configured to report CSI based on the second configuration information and the measurement of CSI-RS.

[0202] The channel state information reporting device of this embodiment receives CSI-RS on the corresponding CSI-RS resource according to the instruction of the first configuration information, and reports CSI according to the instruction of the second configuration information, thus providing feedback on the channel state. This improves the flexibility of CSI-RS scheduling and transmission, making the CSI reporting process more flexible and reliable.

[0203] In one embodiment, the CSI-RS resource includes K CDM groups, where K is a positive integer; the first configuration information includes frequency domain subcarrier position parameters and time domain OFDM symbol position parameters of the CDM groups.

[0204] In one embodiment, with 32 CSI-RS ports and a CDM group size of 2, K = 16; the positions of the K CDM groups are (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k3, l0+1), (k0+12, l0), (k1+12, l0) (k2+12,l0), (k3+12,l0), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; or (k0,l0), (k1,l0) respectively. ), (k2,l0), (k3,l0), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k3+12,l0), (k0,l0+1), ( k1,l0+1), (k2,l0+1), (k3,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+1 2, l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; where, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2 and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0205] In one embodiment, with 32 CSI-RS ports and a CDM group size of 4, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0206] In one embodiment, with 32 CSI-RS ports and a CDM group size of 8, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0207] In one embodiment, with 24 CSI-RS ports and a CDM group size of 2, K = 12; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k0+12, l0+1), (k1+12, l0+1), (k2+12, l0+1); or, (k0, l0), (k1, l0), (k2, l0), (k0+12, l0) (k1+12,l0), (k2+12,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0208] In one embodiment, with 24 CSI-RS ports and a CDM group size of 4, K = 6; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0); and the corresponding CDM group index numbers are 0, 1, 2, 3, 4, and 5, respectively.

[0209] In this context, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0210] In one embodiment, with 24 CSI-RS ports and a CDM group size of 8, K = 3; the positions of the K CDM groups are (k0, l0), (k1, l0), and (k0+12, l0); the corresponding CDM group index numbers are 0, 1, and 2 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0211] In one embodiment, with 16 CSI-RS ports and a CDM group size of 2, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0212] In one embodiment, with 16 CSI-RS ports and a CDM group size of 4, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0213] In one embodiment, the CSI-RS resources include K CDM groups, where K is a positive even number; among the K CDM groups, the position of the CDM group with index number 0 differs from the position of the CDM group with index number K / 2 by Q frequency domain resource blocks, and they have the same time domain OFDM symbol position. The Q frequency domain resource blocks contain M frequency domain subcarriers, where Q and M are positive integers; the first configuration information includes the frequency domain subcarrier position parameters and the time domain OFDM symbol position parameters of the CDM group with index number 0.

[0214] In one embodiment, the first configuration information includes the location parameters of two time-domain OFDM symbols of the CSI-RS resource;

[0215] When the difference between the position parameters of two time-domain OFDM symbols is less than 2, the time-domain position of the CSI-RS resource is determined based on the position parameter of one of the time-domain OFDM symbols.

[0216] When the difference between the position parameters of two time-domain OFDM symbols is greater than or equal to 2, the time-domain position of the CSI-RS resource is determined based on the position parameters of the two time-domain OFDM symbols.

[0217] In one embodiment, the CSI-RS resources include T groups of CDM groups; the first configuration information includes non-zero power channel state information reference signal resource information elements, and the non-zero power channel state information reference signal resource information elements include T channel state information reference signal resource mapping elements, each channel state information reference signal resource mapping element being used to indicate the location of a group of CDM groups.

[0218] In one embodiment, the channel state information reporting device further includes: a port number determination module, configured to determine the CSI-RS port number based on the index number of the CDM group: p = N + s + jK; where K represents the size of the CDM group, j represents the index number of the CDM group, s represents the code sequence index number used by the CSI-RS port for code division multiplexing on the CDM group with index number j, s is a non-negative integer less than K, and N is the starting number of the CSI-RS port, N is a non-negative integer; wherein, the first CSI-RS resource mapping element indicates the position of the first group of CDM groups, including the positions of J1 CDM groups, and the index numbers of the J1 CDM groups are mapped to 0, 1, ..., J1-1; the second CSI-RS resource mapping element indicates the position of the second group of CDM groups, including the positions of J2 CDM groups, and the index numbers of the J2 CDM groups are mapped to J1, J1+1, ..., J1+J2-1; where j is a non-negative integer less than J1+J2.

[0219] In one embodiment, the channel state information reporting device further includes a calculation module, configured to calculate the number of channel state information processing units occupied by the receiving CSI-RS according to the first configuration information, wherein the number of channel state information processing units occupied by the receiving CSI-RS is T.

[0220] In one embodiment, the channel state information includes PMI, wherein the precoding matrix is ​​determined based on a first set of vectors and a second set of vectors; wherein the first set of vectors includes L vectors, and the second set of vectors includes M vectors. v Vectors, L, M v It is a positive integer.

[0221] In one embodiment, corresponding to M v The second group of vectors consists of the DFT vector with index 0 and the vector with index 2. The DFT vector; where the index number is The elements in the DFT vector are represented as t is a non-negative integer less than N3, where N3 is the number of precoding matrices.

[0222] In one embodiment, The precoding indicator is selected from 1 and N3-1; the second configuration information is selected from 1 and N3-1; or it is determined based on the number of precoding matrix subbands included in each channel quality indicator (CQI) subband.

[0223] In one embodiment, M v The format of the channel quality indicator is 1, which indicates that the format is the broadband channel quality indicator format.

[0224] In one embodiment, the channel state information reporting device further includes: a vector number determination module, configured to determine M based on at least one of P and L. v Where P is the number of CSI-RS ports.

[0225] In one embodiment, M v Meet at least one of the following:

[0226] Corresponding to P being greater than or equal to the first threshold, M v It is 2;

[0227] Corresponding to P being less than or equal to the second threshold, M v It is 2;

[0228] Corresponding to P belonging to the first interval or the first set, M v It is 2;

[0229] Corresponding to L being greater than or equal to the third threshold, M v It is 2;

[0230] Corresponding to L being less than or equal to the fourth threshold, M v It is 2;

[0231] Corresponding to L belonging to the second interval or the second set, M v It is 2;

[0232] Corresponding to the ratio of L to P being greater than or equal to the fifth threshold, M v It is 2;

[0233] Corresponding to the ratio of L to P being less than or equal to the sixth threshold, M v It is 2;

[0234] The ratio of L to P corresponds to the third interval or the third set, M v It is 2;

[0235] Where P is the number of CSI-RS ports.

[0236] In one embodiment, the channel state information reporting device further includes: a first set of vector determination modules, configured to determine based on M v The value determines L vectors.

[0237] In one embodiment, the mapping relationship between the CSI-RS port and L vectors satisfies;

[0238] With M v Corresponding to >1, each port in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each of the L ports in the CSI-RS port system, which in turn corresponds to a vector; or,

[0239] With M v Corresponding to >1, each of the L ports in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each port in the CSI-RS port, which corresponds to a vector.

[0240] In one embodiment, PMI is used to indicate L+M v LM composed of vectors v The non-zero coefficients in the coefficients of each vector pair, where the maximum number of non-zero coefficients in each layer is K0, where K0 is a positive integer.

[0241] In one embodiment, L is determined according to one of the following:

[0242] The second configuration information includes P and a first coefficient, where the first coefficient is a positive number, and L is determined based on P and the first coefficient.

[0243] L equals P;

[0244] Where P is the number of CSI-RS ports.

[0245] In one embodiment, K0 is determined according to one of the following:

[0246] K0 is determined by the product of L and the second coefficient, where the second coefficient is a positive number, and the second configuration information includes the second coefficient.

[0247] K0 is determined by the product of P and the third coefficient, where the third coefficient is a positive number, and the second configuration information includes the third coefficient.

[0248] K0 is determined based on P;

[0249] K0 equals L;

[0250] K0 equals P;

[0251] Where P is the number of CSI-RS ports.

[0252] In one embodiment, the second configuration information includes a combination parameter, which indicates one of the following:

[0253] The combined parameter is used to indicate L and the second coefficient, the second coefficient being a positive number, and K0 is determined based on the product of L and the second coefficient;

[0254] The combined parameter is used to indicate P and the third coefficient, which is a positive number. K0 is determined based on the product of P and the third coefficient.

[0255] The combined parameters are used to indicate P, the first coefficient, and the second coefficient. The first coefficient is a positive number, the second coefficient is a positive number, L is determined based on P and the first coefficient, and K0 is determined based on the product of L and the second coefficient.

[0256] Where P is the number of CSI-RS ports.

[0257] In one embodiment, the channel state information reporting device further includes: an instruction content determination module, configured to determine the content based on M. v Determine the content indicated by the combined parameters.

[0258] In one embodiment, with M v =1 corresponds to the combination parameter used to indicate P, the first coefficient and the second coefficient, and M. v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0259] With M v =1 corresponds to the combination parameter used to indicate L and the second coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0260] With M v =1 corresponds to the combination parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P, the first coefficient, and the second coefficient; or,

[0261] With M v =1 corresponds to the combination parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate L and the second coefficient.

[0262] In one embodiment, K0 is based on M v Confirmed; M v K0 corresponding to a value greater than 1 is M v It equals twice the K0 corresponding to 1.

[0263] In one embodiment, the channel state information reporting device further includes: a capability reporting module, configured to report according to M v The combined value with R reports at least one of the following capabilities or any combination thereof: the maximum number of ports per CSI-RS resource; the maximum number of CSI-RS resources per frequency band; the total number of ports per CSI-RS resource per frequency band; where R represents the number of precoding matrix subbands included in each CQI subband.

[0264] In one embodiment, M v The combined values ​​with R include at least one of the following combinations: M v R is 1; M is 1. v R is 2, M is 1; v R is 1, M is 2; v R is 2; M is 2. v If R is greater than 1, then R is 1; M v If the value is greater than 1, then R is 2.

[0265] The channel state information reporting device proposed in this embodiment belongs to the same inventive concept as the channel state information reporting method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as the channel state information reporting method.

[0266] This application also provides a channel state information receiving device. Figure 4 This is a schematic diagram of a channel state information receiving device according to one embodiment. Figure 4 As shown, the channel state information receiving device includes:

[0267] The configuration information sending module 410 is configured to send configuration information, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of CSI-RS resources, and the second configuration information is used to indicate the reporting method of channel status information.

[0268] Reference signal transmission module 420 is configured to transmit CSI-RS according to the first configuration information;

[0269] The report receiving module 430 is configured to receive channel status information based on the second configuration information.

[0270] The channel state information reporting device in this embodiment instructs the terminal to receive CSI-RS on the corresponding CSI-RS resource by sending first configuration information, and instructs the terminal to report CSI to the base station by sending second configuration information to obtain the channel state. This improves the flexibility of CSI-RS scheduling and transmission, and makes the CSI reporting process more flexible and reliable.

[0271] In one embodiment, the CSI-RS resource includes K CDM groups, where K is a positive integer; the first configuration information includes frequency domain subcarrier position parameters and time domain OFDM symbol position parameters of the CDM groups.

[0272] In one embodiment, with 32 CSI-RS ports and a CDM group size of 2, K = 16; the positions of the K CDM groups are (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k3, l0+1), (k0+12, l0), (k1+12, l0) (k2+12,l0), (k3+12,l0), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; or (k0,l0), (k1,l0) respectively. ), (k2,l0), (k3,l0), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k3+12,l0), (k0,l0+1), ( k1,l0+1), (k2,l0+1), (k3,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1), (k3+1 2, l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 respectively; where, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2 and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0273] In one embodiment, with 32 CSI-RS ports and a CDM group size of 4, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0274] In one embodiment, with 32 CSI-RS ports and a CDM group size of 8, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0275] In one embodiment, with 24 CSI-RS ports and a CDM group size of 2, K = 12; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0, l0+1), (k1, l0+1), (k2, l0+1), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k0+12, l0+1), (k1+12, l0+1), (k2+12, l0+1), (k2+12, l0+1), (k1+12, l0+1), (k2+12, l0+1) l0+1); or, (k0,l0), (k1,l0), (k2,l0), (k0+12,l0), (k1+12,l0), (k2+12,l0), (k0,l0+1), (k1,l0+1), (k2,l0+1), (k0+12,l0+1), (k1+12,l0+1), (k2+12,l0+1); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11;

[0276] In this context, the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0277] In one embodiment, with 24 CSI-RS ports and a CDM group size of 4, K = 6; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, and k2 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0278] In one embodiment, with 24 CSI-RS ports and a CDM group size of 8, K = 3; the positions of the K CDM groups are (k0, l0), (k1, l0), and (k0+12, l0); the corresponding CDM group index numbers are 0, 1, and 2 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is a time domain OFDM symbol position parameter.

[0279] In one embodiment, with 16 CSI-RS ports and a CDM group size of 2, K = 8; the positions of the K CDM groups are: (k0, l0), (k1, l0), (k2, l0), (k3, l0), (k0+12, l0), (k1+12, l0), (k2+12, l0), (k3+12, l0); the corresponding CDM group index numbers are 0, 1, 2, 3, 4, 5, 6, 7 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0, k1, k2, and k3 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0280] In one embodiment, with 16 CSI-RS ports and a CDM group size of 4, K = 4; the positions of the K CDM groups are (k0, l0), (k1, l0), (k0+12, l0), and (k1+12, l0); the corresponding CDM group index numbers are 0, 1, 2, and 3 respectively; where the first parameter in (,) represents the frequency domain subcarrier position of the CDM group, and the second parameter in (,) represents the time domain OFDM symbol position; k0 and k1 are frequency domain subcarrier position parameters, and l0 is the time domain OFDM symbol position parameter.

[0281] In one embodiment, the CSI-RS resources include K CDM groups, where K is a positive even number; among the K CDM groups, the position of the CDM group with index number 0 differs from the position of the CDM group with index number K / 2 by Q frequency domain resource blocks, and they have the same time domain OFDM symbol position. The Q frequency domain resource blocks contain M frequency domain subcarriers, where Q and M are positive integers; the first configuration information includes the frequency domain subcarrier position parameters and the time domain orthogonal frequency division multiplexing OFDM symbol position parameters of the CDM group with index number 0.

[0282] In one embodiment, the first configuration information includes two time-domain OFDM symbol position parameters of the CSI-RS resource; when the difference between the two time-domain OFDM symbol position parameters is less than 2, the time-domain position of the CSI-RS resource is determined according to one of the time-domain OFDM symbol position parameters; when the difference between the two time-domain OFDM symbol position parameters is greater than or equal to 2, the time-domain position of the CSI-RS resource is determined according to the two time-domain OFDM symbol position parameters.

[0283] In one embodiment, the CSI-RS resources include T groups of CDM groups; the first configuration information includes non-zero power channel state information reference signal resource information elements, and the non-zero power channel state information reference signal resource information elements include T channel state information reference signal resource mapping elements, each channel state information reference signal resource mapping element being used to indicate the location of a group of CDM groups.

[0284] In one embodiment, the channel state information receiving device further includes: a numbering determination module, configured to determine the number of the CSI-RS port according to the index number of the CDM group: p = N + s + jK; where K represents the size of the CDM group, j represents the index number of the CDM group, s represents the code sequence index number used by the CSI-RS port for code division multiplexing on the CDM group with index number j, s is a non-negative integer less than K, N is the starting number of the CSI-RS port, and N is a non-negative integer; wherein, the first CSI-RS resource mapping element indicates the position of the first group of CDM groups, including the positions of J1 CDM groups, and the index numbers of the J1 CDM groups are mapped to 0, 1, ..., J1-1; the second CSI-RS resource mapping element indicates the position of the second group of CDM groups, including the positions of J2 CDM groups, and the index numbers of the J2 CDM groups are mapped to J1, J1+1, ..., J1+J2-1; where j is a non-negative integer less than J1+J2.

[0285] In one embodiment, the number of channel state information processing units receiving CSI-RS is equal to the number of CSI-RS resource mapping elements in the first configuration information.

[0286] In one embodiment, the channel state information includes a precoding matrix indicator (PMI); the channel state information receiving device further includes a precoding matrix determination module, configured to determine a precoding matrix based on a first set of vectors and a second set of vectors; wherein the first set of vectors includes L vectors, and the second set of vectors includes M vectors. v Vectors, L, M v It is a positive integer.

[0287] In one embodiment, corresponding to M v The second group of vectors consists of the DFT vector with index 0 and the vector with index 2. The DFT vector; where the index number is The elements in the DFT vector are represented as t is a non-negative integer less than N3, where N3 is the number of precoding matrices.

[0288] In one embodiment, The precoding indicator is selected from 1 and N3-1; the second configuration information is selected from 1 and N3-1; or it is determined based on the number of precoding matrix subbands included in each channel quality indicator (CQI) subband.

[0289] In one embodiment, M v The format of the channel quality indicator is 1, which indicates that the format is the broadband channel quality indicator format.

[0290] In one embodiment, the channel state information receiving device further includes: a number determination module, configured to determine M based on at least one of P and L. v Where P is the number of CSI-RS ports.

[0291] In one embodiment, M v Meet at least one of the following:

[0292] Corresponding to P being greater than or equal to the first threshold, M v It is 2;

[0293] Corresponding to P being less than or equal to the second threshold, M v It is 2;

[0294] Corresponding to P belonging to the first interval or the first set, M v It is 2;

[0295] Corresponding to L being greater than or equal to the third threshold, M v It is 2;

[0296] Corresponding to L being less than or equal to the fourth threshold, M v It is 2;

[0297] Corresponding to L belonging to the second interval or the second set, M v It is 2;

[0298] Corresponding to the ratio of L to P being greater than or equal to the fifth threshold, M v It is 2;

[0299] Corresponding to the ratio of L to P being less than or equal to the sixth threshold, M v It is 2;

[0300] The ratio of L to P corresponds to the third interval or the third set, M v It is 2;

[0301] Where P is the number of CSI-RS ports.

[0302] In one embodiment, the channel state information receiving device further includes: a vector determination module, configured to determine based on M v The value determines L vectors.

[0303] In one embodiment, the mapping relationship between the CSI-RS port and L vectors satisfies; and with M v Corresponding to >1, each port in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each of the L ports in the CSI-RS port system, which in turn corresponds to a vector; or,

[0304] With M v Corresponding to >1, each of the L ports in the CSI-RS port corresponds to a vector, and M v =1 corresponds to each port in the CSI-RS port, which corresponds to a vector.

[0305] In one embodiment, PMI is used to indicate L+M v LM composed of vectors v The non-zero coefficients in the coefficients of each vector pair, where the maximum number of non-zero coefficients in each layer is K0, where K0 is a positive integer.

[0306] In one embodiment, L is determined based on one of the following: the second configuration information includes P and a first coefficient, the first coefficient being a positive number, and L is determined based on P and the first coefficient;

[0307] L equals P; where P is the number of CSI-RS ports.

[0308] In one embodiment, K0 is determined according to one of the following:

[0309] K0 is determined by the product of L and the second coefficient, where the second coefficient is a positive number, and the second configuration information includes the second coefficient.

[0310] K0 is determined by the product of P and the third coefficient, where the third coefficient is a positive number, and the second configuration information includes the third coefficient.

[0311] K0 is determined based on P;

[0312] K0 equals L;

[0313] K0 equals P;

[0314] Where P is the number of CSI-RS ports.

[0315] In one embodiment, the second configuration information includes a combination parameter, which indicates one of the following: the combination parameter indicates L and a second coefficient, the second coefficient being a positive number, and K0 is determined based on the product of L and the second coefficient; the combination parameter indicates P and a third coefficient, the third coefficient being a positive number, and K0 is determined based on the product of P and the third coefficient; the combination parameter indicates P, a first coefficient, and a second coefficient, the first coefficient being a positive number, the second coefficient being a positive number, L being determined based on P and the first coefficient, and K0 being determined based on the product of L and the second coefficient; wherein, P is the number of CSI-RS ports.

[0316] In one embodiment, the channel state information receiving device further includes: a content determination module, configured to determine the content based on M. v Determine the content indicated by the combined parameters.

[0317] In one embodiment, with M v =1 corresponds to the combination parameter used to indicate P, the first coefficient and the second coefficient, and M. v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0318] With M v =1 corresponds to the combination parameter used to indicate L and the second coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P and the third coefficient; or,

[0319] With M v =1 corresponds to the combination parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate P, the first coefficient, and the second coefficient; or,

[0320] With M v =1 corresponds to the combination parameter used to indicate P and the third coefficient, and M v Corresponding to >1, the combined parameter is used to indicate L and the second coefficient.

[0321] In one embodiment, K0 is based on M v Sure;

[0322] M v K0 corresponding to a value greater than 1 is M v It equals twice the K0 corresponding to 1.

[0323] In one embodiment, the channel state information receiving device further includes: a capability receiving module, configured to receive information according to M. v The combined value with R receives at least one of the following capabilities or any combination thereof:

[0324] Maximum number of ports per CSI-RS resource;

[0325] Maximum number of CSI-RS resources per frequency band;

[0326] Total number of ports for each CSI-RS resource in each frequency band;

[0327] Where R represents the number of precoding matrix subbands included in each CQI subband.

[0328] In one embodiment, M v The combined values ​​with R include at least one of the following combinations: M v R is 1; M is 1. v R is 2, M is 1; v R is 1, M is 2; v R is 2; M is 2. v If R is greater than 1, then R is 1; M v If the value is greater than 1, then R is 2.

[0329] The channel state information receiving device proposed in this embodiment belongs to the same inventive concept as the channel state information receiving method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as the channel state information receiving method.

[0330] This application also provides a communication node. Figure 5 This is a schematic diagram of the hardware structure of a communication node provided in one embodiment, such as... Figure 5 As shown, the communication node provided in this application includes a memory 52, a processor 51, and a computer program stored in the memory and executable on the processor. When the processor 51 executes the program, it implements the aforementioned channel state information reporting method or channel state information receiving method. For example, the communication node can be a user equipment (UE), which receives CSI-RS according to the resource location indicated by the first configuration information and reports channel state information to the base station according to the indication of the second configuration information. Alternatively, the communication node can be a base station, which indicates the resource location of CSI-RS through the first configuration information and receives the channel state information reported by the user terminal according to the indication of the second configuration information.

[0331] The communication node may also include a memory 52; the processor 51 in the communication node may be one or more. Figure 5 Taking a processor 51 as an example; memory 52 is used to store one or more programs; the one or more programs are executed by the one or more processors 51, so that the one or more processors 51 implement the channel state information reporting method or the channel state information receiving method as described in the embodiments of this application.

[0332] The communication node also includes: a communication device 53, an input device 54, and an output device 55.

[0333] The processor 51, memory 52, communication device 53, input device 54, and output device 55 in the communication node can be connected via a bus or other means. Figure 5 Taking the example of a connection between China and Israel via a bus.

[0334] Input device 54 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the communication node. Output device 55 may include display devices such as a display screen.

[0335] The communication device 53 may include a receiver and a transmitter. The communication device 53 is configured to perform information transmission and reception communication under the control of the processor 51.

[0336] The memory 52, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the channel state information reporting method described in the embodiments of this application (e.g., configuration information receiving module 310, reference signal receiving module 320, and reporting module 330 in the channel state information reporting device). The memory 52 may include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the communication node, etc. Furthermore, the memory 52 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 52 may further include memory remotely located relative to the processor 51, and these remote memories can be connected to the communication node via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0337] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements any of the channel state information reporting methods or channel state information receiving methods described in this application.

[0338] The channel state information reporting method includes: receiving configuration information, the configuration information including first configuration information and second configuration information, the first configuration information being used to indicate the location of CSI-RS resources, and the second configuration information being used to indicate reporting parameters for channel state information; receiving the CSI-RS according to the first configuration information; and reporting channel state information according to the second configuration information and measurements of the CSI-RS.

[0339] The method for receiving channel state information includes: sending configuration information, the configuration information including first configuration information and second configuration information, the first configuration information being used to indicate the location of CSI-RS resources, and the second configuration information being used to indicate the reporting method of channel state information; sending the CSI-RS according to the first configuration information; and receiving channel state information according to the second configuration information.

[0340] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination thereof. The computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0341] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0342] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0343] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0344] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0345] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0346] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0347] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0348] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0349] A detailed description of exemplary embodiments of this application has been provided above through exemplary and non-limiting examples. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, without departing from the scope of this application. Therefore, the proper scope of this application will be determined by the claims.

Claims

1. A channel state information reporting method, characterized in that, include: Receive configuration information, the configuration information including first configuration information and second configuration information, the first configuration information being used to indicate the location of channel state information reference signal resources, and the second configuration information being used to indicate the reporting parameters of channel state information; The channel state information reference signal is received according to the first configuration information; Based on the second configuration information and the measurement of the channel state information reference signal, a channel state information report is submitted. The channel state information comprises a precoding matrix indicator (PMI), wherein a precoding matrix is determined according to a first group of vectors and a second group of vectors; wherein the first group of vectors comprises L vectors, and the second group of vectors comprises M vectors, L and M are positive integers. v v ​​ L is determined according to one of the following: The second configuration information includes P and a first coefficient, where the first coefficient is a positive number, and L is determined based on P and the first coefficient. L equals P; Wherein, P is the number of the channel state information reference signal ports.

2. The method according to claim 1, characterized in that, Corresponding to M v The second group of vectors includes the DFT vector with index number 0 and the vector with index number 2. DFT vector; Among them, the index number is The elements in the DFT vector are represented as t is a non-negative integer less than N3, where N3 is the number of precoding matrices.

3. The method according to claim 2, characterized in that, Determine using one of the following methods: The precoding indicator is selected from 1 and N3-1; The second configuration information is selected from 1 and N3-1; Determined based on the number of precoding matrix subbands included in each Channel Quality Indicator (CQI) subband.

4. The method according to claim 1, characterized in that, M v The format of the channel quality indicator indicated by 1 is the wideband channel quality indicator format.

5. The method according to claim 1, characterized in that, Also includes: M is determined based on at least one of P and L. v Where P is the number of the channel state information reference signal ports.

6. The method according to claim 1, characterized in that, M v Meet at least one of the following: Corresponding to P being greater than or equal to the first threshold, M v It is 2; Corresponding to P being less than or equal to the second threshold, M v It is 2; Corresponding to P belonging to the first interval or the first set, M v It is 2; Corresponding to L being greater than or equal to the third threshold, M v It is 2; Corresponding to L being less than or equal to the fourth threshold, M v It is 2; Corresponding to L belonging to the second interval or the second set, M v It is 2; Corresponding to the ratio of L to P being greater than or equal to the fifth threshold, M v It is 2; Corresponding to the ratio of L to P being less than or equal to the sixth threshold, M v It is 2; The ratio of L to P corresponds to the third interval or the third set, M v It is 2; Wherein, P is the number of the channel state information reference signal ports.

7. The method according to claim 1, characterized in that, Also includes: According to M v The value determines the L vectors.

8. The method according to claim 1, characterized in that, The mapping relationship between the channel state information reference signal port and the L vectors satisfies; With M v Corresponding to >1, each port in the channel state information reference signal port corresponds to a vector, and M v =1 corresponds to each of the L ports in the channel state information reference signal port, which in turn corresponds to a vector; or, With M v Corresponding to >1, each of the L ports in the channel state information reference signal port corresponds to a vector, and M v Corresponding to 1, each port in the channel state information reference signal port corresponds to a vector.

9. The method according to claim 1, characterized in that, The PMI is used to indicate L+M v LM composed of vectors v The non-zero coefficients in the coefficients of each vector pair, where the maximum number of non-zero coefficients in each layer is K0, where K0 is a positive integer.

10. The method according to claim 9, characterized in that, K0 is determined according to one of the following: K0 is determined by the product of L and the second coefficient, where the second coefficient is a positive number, and the second configuration information includes the second coefficient. K0 is determined based on the product of P and the third coefficient, where the third coefficient is a positive number, and the second configuration information includes the third coefficient. K0 is determined based on P; K0 equals L; K0 equals P; Wherein, P is the number of the channel state information reference signal ports.

11. The method according to claim 9, characterized in that, The second configuration information includes a combination parameter, which indicates one of the following: The combined parameters are used to indicate L and the second coefficient, the second coefficient being a positive number, and K0 is determined based on the product of L and the second coefficient; The combined parameters are used to indicate P and the third coefficient, which is a positive number, and K0 is determined based on the product of P and the third coefficient. The combined parameters are used to indicate P, the first coefficient and the second coefficient, the first coefficient is a positive number, the second coefficient is a positive number, L is determined according to P and the first coefficient, and K0 is determined according to the product of L and the second coefficient. Wherein, P is the number of the channel state information reference signal ports.

12. The method according to claim 11, characterized in that, Also includes: According to M v Determine the content indicated by the combined parameters.

13. The method according to claim 12, characterized in that, With M v Corresponding to =1, the combined parameters are used to indicate P, the first coefficient, and the second coefficient, and M. v Corresponding to >1, the combined parameters are used to indicate P and the third coefficient; or, With M v Corresponding to =1, the combined parameter is used to indicate L and the second coefficient, and M v Corresponding to >1, the combined parameters are used to indicate P and the third coefficient; or, With M v Corresponding to =1, the combined parameter is used to indicate P and the third coefficient, in relation to M. v Corresponding to >1, the combined parameters are used to indicate P, the first coefficient, and the second coefficient; or, With M v Corresponding to =1, the combined parameter is used to indicate P and the third coefficient, in relation to M. v Corresponding to >1, the combined parameter is used to indicate L and the second coefficient.

14. The method according to claim 9, characterized in that, K0 according to M v Sure; M v K0 corresponding to a value greater than 1 is M v It equals twice the K0 corresponding to 1.

15. The method according to claim 1, characterized in that, Also includes: According to M v The combined value with R shall report at least one of the following capabilities or any combination thereof: The maximum number of ports that each channel state information references for signal resources; The maximum number of channel state information reference signal resources for each frequency band; The total number of ports for channel state information reference signal resources in each frequency band; Where R represents the number of precoding matrix subbands included in each CQI subband.

16. The method according to claim 15, characterized in that, M v The combined values ​​with R include at least one of the following combinations: M v R is 1; M v R is 2, and R is 1; M v R is 1, and R is 2; M v R is 2; M v If the value is greater than 1, then R is 1; M v If the value is greater than 1, then R is 2.

17. A method for receiving channel state information, characterized in that, include: Send configuration information, which includes first configuration information and second configuration information. The first configuration information is used to indicate the location of the channel state information reference signal resource, and the second configuration information is used to indicate the reporting method of the channel state information. The channel state information reference signal is sent according to the first configuration information; Receive channel status information according to the second configuration information; The channel state information includes a precoding matrix indicator (PMI), wherein the precoding matrix is ​​determined based on a first set of vectors and a second set of vectors; wherein the first set of vectors includes L vectors, and the second set of vectors includes M vectors. v Vectors, L, M v It is a positive integer; L is determined according to one of the following: The second configuration information includes P and a first coefficient, where the first coefficient is a positive number, and L is determined based on P and the first coefficient. L equals P; Wherein, P is the number of the channel state information reference signal ports.

18. A communication node, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the channel state information reporting method as described in any one of claims 1-16 or the channel state information receiving method as described in claim 17.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the channel state information reporting method as described in any one of claims 1-16 or the channel state information receiving method as described in claim 17.

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