Information acquisition method, device, equipment and storage medium

Abstract

The present application proposes an information acquisition method, device, equipment and storage medium. The method includes: determining first configuration information of a CSI report, the first configuration information including: simultaneously associated CSI-RS resources and SRS resources; CSI-RS resources are used to carry channel state information reference signals, and SRS resources are used to carry sounding reference signals; sending the first configuration information to a second communication node; receiving a CSI report fed back by the second communication node, the CSI report is generated based on the measurement of the channel state information reference signal carried on the CSI-RS resource; and obtaining corresponding channel state information based on the CSI report.

Description

Technical Field

[0001] The present application relates to communications, and in particular to an information acquisition method, apparatus, device and storage medium. Background Art

[0002] Wireless communication has brought convenience to human life and production and improved efficiency. The 5th generation New Radio (5G NR) wireless communication network is designed based on Orthogonal Frequency Division Multiplex (OFDM) technology. The time domain unit structure of wireless communication network transmission using OFDM technology is a certain number of OFDM symbols forming a time slot, and a certain number of time slots forming a radio frame; the frequency domain unit structure of transmission is a certain number of subcarriers forming a resource block (RB). During the transmission process of the wireless communication network, the wireless communication system can formulate a transmission strategy based on the channel state information (CSI). However, in the process of obtaining the channel state information, the corresponding detection reference signal, channel state information reference signal and CSI report need to be matched respectively, which increases the transmission complexity. Summary of the invention

[0003] The embodiments of the present application provide an information acquisition method, apparatus, device and storage medium, which reduce transmission complexity.

[0004] The embodiment of the present application provides an information acquisition method, which is applied to a first communication node, including:

[0005] Determine first configuration information of a channel state information CSI report, the first configuration information comprising: a channel state information reference signal CSI-RS resource and a sounding reference signal SRS resource that are simultaneously associated; the CSI-RS resource is used to carry the channel state information reference signal, and the SRS resource is used to carry the sounding reference signal;

[0006] Sending the first configuration information to a second communication node;

[0007] receiving a CSI report fed back by the second communication node, where the CSI report is generated based on a measurement of a channel state information reference signal carried on the CSI-RS resource;

[0008] Corresponding channel state information is obtained according to the CSI report.

[0009] The embodiment of the present application provides an information acquisition method, which is applied to a second communication node, including:

[0010] Receive first configuration information sent by a first communication node, the first configuration information comprising: a CSI-RS resource and an SRS resource that are associated at the same time; the CSI-RS resource is used to carry a channel state information reference signal, and the SRS resource is used to carry a sounding reference signal;

[0011] A CSI report is fed back to the first communication node, where the CSI report is generated based on the measurement of a channel state information reference signal carried on the CSI-RS resource, and the CSI report is used for the first communication node to parse and obtain corresponding channel state information.

[0012] The embodiment of the present application provides an information acquisition device, applied to a first communication node, including:

[0013] A determination module is configured to determine first configuration information of a channel state information CSI report, wherein the first configuration information includes: a channel state information reference signal CSI-RS resource and a sounding reference signal SRS resource that are simultaneously associated; the CSI-RS resource is used to carry the channel state information reference signal, and the SRS resource is used to carry the sounding reference signal;

[0014] A sending module, configured to send the first configuration information to a second communication node;

[0015] A first receiving module, configured to receive a CSI report fed back by the second communication node, wherein the CSI report is generated based on a measurement of a channel state information reference signal carried on the CSI-RS resource;

[0016] The parsing module is configured to obtain corresponding channel state information according to the CSI report.

[0017] The embodiment of the present application provides an information acquisition device, which is applied to a second communication node, including:

[0018] A second receiving module is configured to receive first configuration information sent by a first communication node, wherein the first configuration information includes: a CSI-RS resource and an SRS resource that are associated at the same time; the CSI-RS resource is used to carry a channel state information reference signal, and the SRS resource is used to carry a sounding reference signal;

[0019] A feedback module is configured to feed back a CSI report to the first communication node, wherein the CSI report is generated based on the measurement of a channel state information reference signal carried on the CSI-RS resource, and the CSI report is used for the first communication node to parse and obtain corresponding channel state information.

[0020] An embodiment of the present application provides a device, including: a memory, and one or more processors;

[0021] The memory is used to store one or more programs;

[0022] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0023] An embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flow chart of an information acquisition method provided in an embodiment of the present application;

[0025] Figure 2 is a flow chart of another information acquisition method provided in an embodiment of the present application;

[0026] Figure 3 is a structural block diagram of an information acquisition device provided in an embodiment of the present application;

[0027] Figure 4 is a structural block diagram of another information acquisition device provided in an embodiment of the present application;

[0028] Figure 5 It is a structural schematic diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0030] In order to obtain high-precision channel state information, the second communication node sends an uplink sounding reference signal (SRS) to the first communication node. The base station obtains the channel coefficient matrix, arrival angle and departure angle information, and multipath delay information by measuring the uplink sounding reference signal; the first communication node estimates the spatial filter and frequency domain precoding of the downlink channel based on the obtained uplink channel information and the reciprocity of the uplink and downlink channels; then transmits the channel state information reference signal (CSI-RS) to the terminal; wherein the CSI-RS of each port is generated by weighting the spatial filter and the frequency domain precoding codeword, that is, the CSI-RS of each port corresponds to a pair (spatial filter, frequency domain precoding codeword); the second communication node reports the channel state information to the first communication node based on the measurement of the CSI-RS. In an embodiment, the channel state information includes precoding matrix information.

[0031] A spatial filter is a set of weighting factors used on the antenna port to generate a composite signal transmitted by multiple antennas. The spatial filter can separate the signal in the target spatial direction, for example, the signal in the target beam direction. A frequency domain precoding codeword is a set of weighting factors used in different frequency domains to generate signals with different weights in the frequency domain. Multiple frequency domain precoding codewords are weighted to form frequency domain precoding, and the elements in the frequency domain precoding act on different frequency domains to generate signals with different weights in the frequency domain. However, this method of obtaining channel state information requires matching the corresponding detection reference signal, channel state information reference signal, and CSI report respectively, which increases the transmission complexity and is inconvenient to use.

[0032] In view of this, an embodiment of the present application provides an information acquisition method, which uses corresponding channel state information reference signal resources and corresponding detection reference signal resources to jointly obtain uplink and downlink channel channel state information reports, thereby reducing the complexity of the base station obtaining channel state information and matching the receiving detection reference signal, sending the channel state information reference signal, and receiving the channel state information report, and reducing the complexity of the terminal sending the channel state information report and matching the sending of the detection reference signal and receiving the channel state information reference signal.

[0033] In one implementation, Figure 1 1 is a flow chart of an information acquisition method provided by an embodiment of the present application. This embodiment is applied to a first communication node. In one embodiment, the first communication node may be a base station. Figure 1 As shown, this embodiment includes S110-S140.

[0034] S110. Determine first configuration information for a CSI report.

[0035] In an embodiment, the first configuration information includes: CSI-RS resources and SRS resources that are associated at the same time; the CSI-RS resources are used to carry a channel state information reference signal, and the SRS resources are used to carry a sounding reference signal.

[0036] In an embodiment, the CSI report is an original CSI report, that is, a report in which the various parameters in the CSI report are not filled in by the second communication node. Exemplarily, it is assumed that at least three parameters A, B, and C are configured in the CSI report, that is, the first configuration information is the three parameters A, B, and C set in the CSI report, but the specific parameters of A, B, and C are not determined. In an embodiment, the first configuration information is associated with both CSI-RS resources and SRS resources, so that the first communication node can conveniently receive the corresponding uplink sounding reference signal and transmit the corresponding channel state information reference signal, and conveniently receive the corresponding CSI report sent by the second communication node.

[0037] S120. Send the first configuration information to the second communication node.

[0038] In an embodiment, after the first communication node determines the first configuration information of the CSI report, the first configuration information associated with both the CSI-RS resources and the SRS resources is sent to the second communication node, so that the second communication node can conveniently send the corresponding uplink sounding reference signal and receive the corresponding channel state information reference signal.

[0039] S130. Receive the CSI report fed back by the second communication node.

[0040] In an embodiment, the CSI report is generated based on the measurement of the channel state information reference signal carried on the CSI-RS resource. In an embodiment, after the second communication node receives the first configuration information of the CSI report, the second communication node obtains the specific parameters corresponding to the first configuration information based on the channel state information reference signal transmitted by the first communication node, that is, the measurement of the channel state information reference signal carried on the CSI-RS resource, thereby obtaining a CSI report filled with the specific parameters. After the second communication node completes the filling of the specific parameters of each configuration information in the CSI report, the CSI report after the filled information is fed back to the first communication node.

[0041] S140. Obtain corresponding channel state information according to the CSI report.

[0042] In an embodiment, the first communication node parses the information in the CSI report to obtain the corresponding channel state information.

[0043] In one implementation, a first communication node receives an uplink sounding reference signal carried by an associated SRS resource transmitted by a second communication node, extracts channel information from the uplink sounding reference signal, determines a spatial domain filter and a frequency domain precoding codeword for downlink transmission based on the reciprocity of uplink and downlink channels, and the first communication node transmits a channel state information reference signal generated by weighting the spatial domain filter and the frequency domain precoding codeword on a CSI-RS resource, and then receives a CSI report generated by the second communication node based on measurement of the channel state information reference signal.

[0044] In one embodiment, the manner of associating the CSI-RS resource in the first configuration information includes one of the following: associating an identifier of the CSI-RS resource; associating an identifier of a set to which the CSI-RS resource belongs;

[0045] The manner of associating the SRS resource in the first configuration information includes one of the following: associating an identifier of the SRS resource; associating an identifier of a set to which the SRS resource belongs.

[0046] In one implementation, the identifier of the CSI-RS resource is associated in the first configuration information, or the identifier of the set to which the CSI-RS resource belongs is associated in the first configuration information. Exemplarily, the identifier of the associated CSI-RS resource or the identifier of the set to which the associated CSI-RS resource belongs may be described in the first configuration information.

[0047] In one embodiment, the identifier of the SRS resource is associated in the first configuration information, or the identifier of the set to which the SRS resource belongs is associated in the first configuration information. Exemplarily, the identifier of the associated SRS resource or the identifier of the set to which the associated SRS resource belongs may be described in the first configuration information.

[0048] In one embodiment, the associated positions of the CSI-RS resource and the SRS resource include one of the following: at different positions in the first configuration information; at the same position in the first configuration information; or at adjacent positions in the first configuration information.

[0049] In one implementation, both CSI-RS resources and SRS resources are associated in the first configuration information, and the method may be to describe the associated CSI-RS resources and SRS resources respectively at different positions of the first configuration information; or to describe the associated CSI-RS resources and SRS resources together at the same position of the first configuration information; or to describe the associated CSI-RS resources and SRS resources respectively at adjacent positions of the first configuration information. The first configuration information includes information that associates both CSI-RS resources and SRS resources, and the corresponding CSI-RS resources and the corresponding SRS resources can be used to obtain a report of channel state information through the uplink and downlink channels, thereby reducing the complexity of the first communication node obtaining channel state information and matching the reception of the detection reference signal, the transmission of the channel state information reference signal, and the reception of the channel state information. In one embodiment, different positions of the first configuration information may be different rows, different pages, etc. of the first configuration information; the same position of the first configuration information may be the same row or the same page of the first configuration information; the adjacent positions of the first configuration information may be two adjacent rows or two adjacent pages of the first configuration information, and this is not limited.

[0050] In one implementation, in some scenarios, the transmission of the channel state information report, the transmission of the channel state information reference signal, and the transmission of the uplink sounding reference signal are continuous. In some scenarios, the transmission of the channel state information report, the transmission of the channel state information reference signal, and the transmission of the uplink sounding reference signal are not continuous. For these scenarios where the transmission is not continuous, one solution for notifying the transmission of the channel state information report is to use signaling for triggering, such as using downlink control information format signaling for triggering.

[0051] In one embodiment, when the CSI report, channel state information reference signal and sounding reference signal are not transmitted continuously, the information acquisition method also includes: using downlink control information (DCI) format signaling to simultaneously trigger at least the following two events: the first communication node receives the sounding reference signal; the first communication node transmits the channel state information reference signal; the first communication node receives the CSI report.

[0052] In one embodiment, the first communication node may use a DCI format signaling to simultaneously trigger any two of the following events: the first communication node receives a sounding reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report. In one embodiment, the first communication node uses a DCI format signaling to simultaneously trigger the following events: the first communication node receives a sounding reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report. In an embodiment, the execution order of these three events may be: the first communication node receives a sounding reference signal, the first communication node transmits a channel state information reference signal, and the first communication node receives a CSI report.

[0053] In the embodiment, three related events are triggered by only one DCI format signaling, namely, the complete event process of channel state information acquisition. That is, one DCI format signaling facilitates the execution of each event in the channel state information acquisition and completes the acquisition of the channel state information. This saves signaling overhead compared to using signaling to trigger each event separately, saves the number of times the first communication node uses signaling, and also saves the number of times the second communication node receives signaling.

[0054] In one implementation, the first communication node triggers the above three events simultaneously using a DCI format signaling. In one embodiment, the DCI format signaling describes the sounding reference signal, the channel state information reference signal, and the channel state information report, or describes the identification of the sounding reference signal, the channel state information reference signal, and the channel state information report, respectively.

[0055] In one embodiment, the DCI format signaling includes at least one of the following: a sounding reference signal; a channel state information reference signal; a CSI report.

[0056] In one embodiment, the DCI format signaling includes at least one of the following: an identifier of a sounding reference signal; an identifier of a channel state information reference signal; an identifier of a CSI report.

[0057] In one implementation, the first configuration information of the CSI report includes associating CSI-RS resources and SRS resources together, that is, only one of them is indicated in the DCI format signaling, which can simultaneously trigger the three events (the first communication node receives a detection reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report), which can reduce the load of the indication information included in the DCI format signaling and reduce the complexity of the DCI format signaling.

[0058] In one implementation, the first communication node uses DCI format signaling to simultaneously trigger the first communication node to receive a sounding reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report. Exemplarily, the first communication node indicates the identifier of the CSI report in the DCI format signaling, and the CSI report indicated by the identifier of the CSI report, the channel state information reference signal associated with the CSI report, and the sounding reference signal are triggered. In an embodiment, according to the identifier of the CSI report indicated by the DCI format signaling, the description of the channel state information reference signal and the sounding reference signal information associated with the CSI report can be conveniently read from the first configuration information of the CSI report, thereby conveniently triggering the corresponding channel state information reference signal and the sounding reference signal while triggering the CSI report.

[0059] In one embodiment, the first configuration information further includes: a size of the frequency domain precoding vector, and a bandwidth corresponding to the size of the frequency domain precoding vector;

[0060] The density of the CSI-RS resources associated in the first configuration information is an integer multiple of the first ratio, where the first ratio is the ratio between the size of the frequency domain precoding vector and the bandwidth corresponding to the size of the frequency domain precoding vector; the size of the frequency domain precoding vector is the number of elements contained in the frequency domain precoding vector; the density of the CSI-RS resources is converted into the number of resource units (RE) occupied on average by each port of each resource block (RB).

[0061] In one implementation, when the frequency domain precoding is described in the form of a vector, it is called a frequency domain precoding vector; the size of the frequency domain precoding vector is the number of elements contained in the frequency domain precoding vector. The frequency domain precoding vector can be analyzed into a set of orthogonal frequency domain precoding codewords, that is, the frequency domain precoding vector can be expressed as a linear combination of a set of orthogonal frequency domain precoding codewords. One scheme for reporting channel state information is to report the weights of the frequency domain precoding codewords in the linear combination, and the weights are based on the measurement of the channel coefficients corresponding to the channel state information reference signal of the size of the integer multiple frequency domain precoding vector within the bandwidth corresponding to the size of the frequency domain precoding vector, that is, the first configuration information also includes: the size of the frequency domain precoding vector and the bandwidth corresponding to the size of the frequency domain precoding vector, and the density of the channel state information reference signal associated in the first configuration information is an integer multiple of the first ratio, which can facilitate the support of the scheme for reporting channel state information. The density of the channel state information reference signal is an integer multiple of the first ratio, where the density of the channel state information reference signal is converted into the average number of REs occupied per RB per port; the first ratio is the ratio of the size of the frequency domain precoding vector to the bandwidth corresponding to the size of the frequency domain precoding vector, where the bandwidth is converted into a number calculated in units of RB.

[0062] In one embodiment, there is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report;

[0063] The two dimensions of CSI-RS resources include: the code division multiplexing group, the code sequence used by each port in the code division multiplexing group for code division multiplexing;

[0064] The two dimensions of the precoding matrix in the CSI report include: spatial domain beam vector and frequency domain precoding codeword.

[0065] In one implementation, the channel state information reference signal resource is composed of a resource unit group, which is composed of a certain number of resource units, that is, a collection of a certain number of resource units, and the port of the channel state information reference signal is carried on the resource unit group in a code division multiplexing manner. Such a resource unit group is a code division multiplexing group (Code Division Multiplexing group, CDM group). Each code division multiplexing group carries a certain number of ports of the channel state information reference signal; the ports in the same CDM group are multiplexed on the same CDM group through different code sequences; that is, the channel state information reference signal resource has two dimensions, one dimension is the CDM group, and the other dimension is the code sequence used by each port on the CDM group for code division multiplexing.

[0066] The precoding matrix can be parsed as a linear combination of frequency domain precoding codewords under the spatial domain beam vector; that is, the precoding matrix corresponds to two dimensions, one dimension is the spatial domain beam vector, also expressed as a spatial domain filter, and the other dimension is the frequency domain precoding codeword. One solution for reporting channel state information is to report the weights of the precoding codewords corresponding to the two dimensions in the linear combination.

[0067] Establishing the correspondence between the two dimensions on the reference signal resource and the two dimensions of the precoding matrix is ​​to match the dimensions of the reference signal with the dimensions of the precoding matrix, that is, to associate the dimensions of the signal used for measurement with the dimensions used for reporting, so as to conveniently associate several first-dimensional combinations (i.e., spatial beam vectors and frequency-domain precoding codewords) in the CSI report with the channel state information reference signal port, making it convenient to search between several (i.e., spatial beam vectors and frequency-domain precoding codewords) and the channel state information reference signal port, thereby reducing the complexity of the first communication node and the complexity of the second communication node.

[0068] In one embodiment, the code division multiplexing group corresponds to a spatial domain beam vector; and the code sequence used by the port of the channel state information reference signal corresponds to a frequency domain precoding codeword.

[0069] In an embodiment, the code division multiplexing group corresponds to the spatial domain beam vector; the implementation manner in which the code sequence used by the port of the channel state information reference signal corresponds to the frequency domain precoding codeword may include the following four:

[0070] Method 1: Ports carried in the same CDM group correspond to the same spatial beam vector.

[0071] Method 2: Ports using the same code sequence correspond to the same frequency domain precoding codeword.

[0072] Method three: using the same code sequence but carrying ports in different CDM groups corresponding to different spatial beam vectors.

[0073] Mode 4: Ports that are carried in the same CDM group but use different code sequences correspond to different frequency domain precoding codewords.

[0074] In one embodiment, the code division multiplexing group corresponds to the frequency domain precoding codeword; and the code sequence used by the port of the channel state information reference signal corresponds to the spatial domain beam vector.

[0075] In an embodiment, the code division multiplexing group corresponds to the frequency domain precoding codeword; the implementation manner in which the code sequence used by the port of the channel state information reference signal corresponds to the spatial domain beam vector may include the following four:

[0076] Method 1: ports carried in the same CDM group correspond to the same frequency domain precoding codeword.

[0077] Method 2: Ports using the same code sequence correspond to the same spatial beam vector.

[0078] Method three: using the same code sequence but carrying ports in different CDM groups corresponding to different frequency domain precoding codewords.

[0079] Mode 4: Ports that are carried in the same CDM group but use different code sequences correspond to different spatial beam vectors.

[0080] In one embodiment, the CSI-RS resource and the information in the CSI report have one of the following corresponding relationships:

[0081] The port of the channel state information reference signal corresponds to the first dimension combination of the precoding matrix; the first dimension combination of the precoding matrix includes: a spatial domain beam vector and a frequency domain precoding codeword;

[0082] The M ports of the channel state information reference signal correspond to the first dimension combination of the precoding matrix, and M is a positive integer;

[0083] The ports of all channel state information reference signals on one code division multiplexing group correspond to the first dimension combination of the precoding matrix.

[0084] In one embodiment, a port of a channel state information reference signal may be generated by a first dimension combination (i.e., a spatial beam vector and a frequency domain precoding codeword). The ports of the channel state information reference signal correspond one-to-one to the first dimension combination, and the first dimension combination in the CSI report can be conveniently mapped to the spatial beam vector and frequency domain precoding codeword used on the port of a specific channel state information reference signal. In one embodiment, the M ports of the channel state information reference signal correspond to a first dimension combination (i.e., a spatial beam vector, a frequency domain precoding codeword), and M is a configurable positive integer. In one embodiment, multiple ports can be used to measure the same first dimension combination (i.e., a spatial beam vector, a frequency domain precoding codeword) to make the measurement more accurate; at the same time, M is a configurable positive integer, so that M can be configured according to the scenario, so that the measurement accuracy matches the scenario. All the channels of the channel state information reference signal ports on a CDM group correspond to a first dimension combination (spatial beam vector, frequency domain precoding codeword). The ports on the same CDM group use the same time-frequency resources and experience the same channels. Therefore, when measuring the first dimension combination (spatial beam vector, frequency domain precoding codeword), there will be no measurement error due to channel differences, thereby improving the measurement accuracy.

[0085] In one embodiment, the bandwidth corresponding to the CSI report is an integer multiple of the bandwidth corresponding to the size of the frequency domain precoding vector, and the bandwidth corresponding to the CSI report is the bandwidth of the reported channel state information.

[0086] In an embodiment, the bandwidth corresponding to the CSI report is the bandwidth of the reported channel state information, that is, the channel state information describes the information of the channel on this bandwidth. The bandwidth corresponding to the CSI report is an integer multiple of the bandwidth corresponding to the size of the frequency domain precoding vector, which can conveniently provide orthogonal frequency domain precoding vectors or orthogonal frequency domain precoding codewords within this bandwidth; that is, orthogonal frequency domain precoding codewords can be conveniently used for channel state information reference signal ports within this bandwidth. Exemplarily, the bandwidth corresponding to the CSI report is exactly the same as the bandwidth corresponding to the size of the frequency domain precoding vector. Exemplarily, the bandwidth corresponding to the channel state information report is exactly twice the bandwidth corresponding to the size of the frequency domain precoding vector.

[0087] In one implementation, Figure 2 1 is a flow chart of another information acquisition method provided by an embodiment of the present application. This embodiment is applied to a second communication node. In one embodiment, the second communication node may be a user terminal. Figure 2 As shown, this embodiment includes S210-S220.

[0088] S210. Receive first configuration information sent by a first communication node.

[0089] In an embodiment, the first configuration information includes: CSI-RS resources and SRS resources that are associated at the same time; the CSI-RS resources are used to carry a channel state information reference signal, and the SRS resources are used to carry a sounding reference signal.

[0090] S220. Feedback the CSI report to the first communication node.

[0091] In an embodiment, the CSI report is generated based on the measurement of a channel state information reference signal carried on a CSI-RS resource, and the CSI report is used to enable the first communication node to parse and obtain corresponding channel state information.

[0092] In an embodiment, the first communication node associates the corresponding CSI-RS resources with the SRS resources in the first configuration information of the CSI report, so that the second communication node can conveniently send the corresponding uplink sounding reference signal and receive the corresponding channel state information reference signal; at the same time, it also enables the base station to conveniently receive the corresponding uplink sounding reference signal and transmit the corresponding channel state information reference signal, and conveniently receive the corresponding channel state information report sent by the terminal, thereby reducing the complexity of the second communication node sending the channel state information report and matching the sending of the sounding reference signal and the receiving of the channel state information reference signal.

[0093] In one embodiment, the second communication node may use one DCI format signaling to trigger the following events at the same time: the second communication node sends a sounding reference signal; the second communication node receives a channel state information reference signal; the second communication node sends a CSI report. In one embodiment, the second communication node may use one DCI format signaling to trigger the following two events at the same time: the second communication node sends a sounding reference signal; the second communication node receives a channel state information reference signal; the second communication node sends a CSI report. In an embodiment, the second communication node can trigger three related events, i.e., the process of sending channel state information to the first communication node, by using only one DCI format signaling, thereby saving signaling overhead compared to using signaling to trigger each event separately, i.e., saving the number of times the second communication node receives signaling.

[0094] In one implementation, Figure 3 is a structural block diagram of an information acquisition device provided in an embodiment of the present application. Figure 3 As shown, the information acquisition device in this embodiment includes: a determination module 310 , a sending module 320 , a first receiving module 330 and a parsing module 340 .

[0095] The determining module 310 is configured to determine first configuration information of a channel state information CSI report, the first configuration information including: simultaneously associated channel state information reference signal CSI-RS resources and sounding reference signal SRS resources; the CSI-RS resources are used to carry the channel state information reference signal, and the SRS resources are used to carry the sounding reference signal;

[0096] A sending module 320, configured to send the first configuration information to the second communication node;

[0097] A first receiving module 330 is configured to receive a CSI report fed back by the second communication node, where the CSI report is generated based on a measurement of a channel state information reference signal carried on a CSI-RS resource;

[0098] The parsing module 340 is configured to obtain corresponding channel state information according to the CSI report.

[0099] The information acquisition device provided in this embodiment is configured to implement Figure 1 The information acquisition method applied to the first communication node in the illustrated embodiment is similar to the implementation principle and technical effect of the information acquisition device provided in this embodiment, which will not be repeated here.

[0100] In one embodiment, the manner of associating the CSI-RS resource in the first configuration information includes one of the following: associating an identifier of the CSI-RS resource; associating an identifier of a set to which the CSI-RS resource belongs;

[0101] The manner of associating the SRS resource in the first configuration information includes one of the following: associating an identifier of the SRS resource; associating an identifier of a set to which the SRS resource belongs.

[0102] In one embodiment, the associated position of the CSI-RS resource and the SRS resource includes one of the following:

[0103] At different positions of the first configuration information; at the same position of the first configuration information; at adjacent positions of the first configuration information.

[0104] In one embodiment, when the CSI report, the channel state information reference signal, and the sounding reference signal are not continuously transmitted, the information acquisition device further includes:

[0105] The trigger module is configured to use downlink control information DCI format signaling to simultaneously trigger at least the following two events: the first communication node receives a detection reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report.

[0106] In one embodiment, the DCI format signaling includes at least one of the following: a sounding reference signal; a channel state information reference signal; a CSI report.

[0107] In one embodiment, the DCI format signaling includes at least one of the following: an identifier of a sounding reference signal; an identifier of a channel state information reference signal; an identifier of a CSI report.

[0108] In one embodiment, the first configuration information further includes: a size of the frequency domain precoding vector, and a bandwidth corresponding to the size of the frequency domain precoding vector;

[0109] The density of the CSI-RS resources associated in the first configuration information is an integer multiple of the first ratio, where the first ratio is the ratio between the size of the frequency domain precoding vector and the bandwidth corresponding to the size of the frequency domain precoding vector; the size of the frequency domain precoding vector is the number of elements contained in the frequency domain precoding vector; the density of the CSI-RS resources is converted into the average number of resource units RE occupied by each port of each resource block RB.

[0110] In one embodiment, there is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report;

[0111] The two dimensions of CSI-RS resources include: the code division multiplexing group, the code sequence used by each port in the code division multiplexing group for code division multiplexing;

[0112] The two dimensions of the precoding matrix in the CSI report include: spatial domain beam vector and frequency domain precoding codeword.

[0113] In one embodiment, the code division multiplexing group corresponds to a spatial domain beam vector; and the code sequence used by the port of the channel state information reference signal corresponds to a frequency domain precoding codeword.

[0114] In one embodiment, the code division multiplexing group corresponds to the frequency domain precoding codeword; and the code sequence used by the port of the channel state information reference signal corresponds to the spatial domain beam vector.

[0115] In one embodiment, the CSI-RS resource and the information in the CSI report have one of the following corresponding relationships:

[0116] The port of the channel state information reference signal corresponds to the first dimension combination of the precoding matrix; the first dimension combination of the precoding matrix includes: a spatial domain beam vector and a frequency domain precoding codeword;

[0117] The M ports of the channel state information reference signal correspond to the first dimension combination of the precoding matrix, and M is a positive integer;

[0118] The ports of all channel state information reference signals on one code division multiplexing group correspond to the first dimension combination of the precoding matrix.

[0119] In one embodiment, the bandwidth corresponding to the CSI report is an integer multiple of the bandwidth corresponding to the size of the frequency domain precoding vector, and the bandwidth corresponding to the CSI report is the bandwidth of the reported channel state information.

[0120] In one implementation, Figure 4 is a structural block diagram of another information acquisition device provided in an embodiment of the present application. Figure 4 As shown, the information acquisition device in this embodiment includes: a second receiving module 410 and a feedback module 420 .

[0121] The second receiving module 410 is configured to receive first configuration information sent by the first communication node, the first configuration information including: CSI-RS resources and SRS resources associated at the same time; the CSI-RS resources are used to carry channel state information reference signals, and the SRS resources are used to carry sounding reference signals;

[0122] The feedback module 420 is configured to feed back a CSI report to the first communication node. The CSI report is generated based on the measurement of the channel state information reference signal carried on the CSI-RS resource. The CSI report is used for the first communication node to parse and obtain the corresponding channel state information.

[0123] The information acquisition device provided in this embodiment is configured to implement Figure 2 The information acquisition method applied to the second communication node in the illustrated embodiment is similar to the implementation principle and technical effect of the information acquisition device provided in this embodiment, which will not be repeated here.

[0124] Figure 5 Schematic diagram of a device provided in an embodiment of the present application. Figure 5 As shown, the device provided by the present application includes: a processor 510 and a memory 5205. The number of processors 510 in the device can be one or more. Figure 5 In the example, a processor 510 is used. The number of memories 520 in the device may be one or more. Figure 5 A memory 520 is taken as an example. The processor 510 and the memory 520 of the device can be connected via a bus or other means. Figure 5 In the embodiment, the device is a first communication node, wherein the first communication node may be a base station.

[0125] The memory 520, 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 device of any embodiment of the present application (for example, the determination module 310, the sending module 320, the first receiving module 330 and the parsing module 340 in the information acquisition device). The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include a memory remotely arranged relative to the processor 510, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0126] The device provided above can be configured to execute the information acquisition method provided in any of the above embodiments, and has corresponding functions and effects.

[0127] In one embodiment, the embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute an information acquisition method applied to a first communication node, the method comprising: determining first configuration information of a CSI report, the first configuration information comprising: simultaneously associated CSI-RS resources and SRS resources; the CSI-RS resources are used to carry a channel state information reference signal, and the SRS resources are used to carry a detection reference signal; sending the first configuration information to a second communication node; receiving a CSI report fed back by the second communication node, the CSI report being generated based on the measurement of the channel state information reference signal carried on the CSI-RS resources; and obtaining corresponding channel state information based on the CSI report.

[0128] In one embodiment, the embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute an information acquisition method applied to a second communication node, the method comprising: receiving first configuration information sent by a first communication node, the first configuration information comprising: simultaneously associated CSI-RS resources and SRS resources; the CSI-RS resources are used to carry a channel state information reference signal, and the SRS resources are used to carry a detection reference signal; and feeding back a CSI report to the first communication node, the CSI report being generated based on the measurement of the channel state information reference signal carried on the CSI-RS resources, and the CSI report being used to enable the first communication node to parse and obtain corresponding channel state information.

[0129] It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0130] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present application is not limited thereto.

[0131] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0132] The block diagram of any logic flow in the drawings of the present 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 on a memory. The memory may have any type suitable for 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 memory devices and systems (digital versatile discs (DVD) or compact disks (CD)), etc. Computer-readable media may include non-transient storage media. The data processor may be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FGPAs) and processors based on multi-core processor architectures.

Claims

1. A method for obtaining information, characterized in that: Applied to a first communication node, comprising: Determine first configuration information of a channel state information CSI report, the first configuration information comprising: a channel state information reference signal CSI-RS resource and a sounding reference signal SRS resource that are simultaneously associated; the CSI-RS resource is used to carry the channel state information reference signal, and the SRS resource is used to carry the sounding reference signal; Sending the first configuration information to a second communication node; receiving a CSI report fed back by the second communication node, where the CSI report is generated based on a measurement of a channel state information reference signal carried on the CSI-RS resource; Obtain corresponding channel state information according to the CSI report; There is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report; The two dimensions of the CSI-RS resource include: a code division multiplexing group, and a code sequence used by each port in the code division multiplexing group for code division multiplexing; The two dimensions of the precoding matrix in the CSI report include: a spatial domain beam vector and a frequency domain precoding codeword.

2. The method according to claim 1, characterized in that The manner of associating the CSI-RS resource in the first configuration information includes one of the following: associating an identifier of the CSI-RS resource; associating an identifier of a set to which the CSI-RS resource belongs; The manner of associating the SRS resource in the first configuration information includes one of the following: associating an identifier of the SRS resource; and associating an identifier of a set to which the SRS resource belongs.

3. The method according to claim 1 or 2, characterized in that: The associated position of the CSI-RS resource and the SRS resource includes one of the following: At different positions of the first configuration information; at the same position of the first configuration information; at adjacent positions of the first configuration information.

4. The method according to claim 1, characterized in that: In the case where the CSI report, the channel state information reference signal and the sounding reference signal are not continuously transmitted, the method further includes: Downlink control information DCI format signaling is used to simultaneously trigger at least the following two events: the first communication node receives a sounding reference signal; the first communication node transmits a channel state information reference signal; the first communication node receives a CSI report.

5. The method according to claim 4, characterized in that The DCI format signaling includes at least one of the following: a sounding reference signal; a channel state information reference signal; a CSI report.

6. The method according to claim 4, characterized in that The DCI format signaling includes at least one of the following: an identifier of a sounding reference signal; an identifier of a channel state information reference signal; an identifier of a CSI report.

7. The method according to claim 1, characterized in that The first configuration information further includes: a size of a frequency domain precoding vector, and a bandwidth corresponding to the size of the frequency domain precoding vector; The density of the CSI-RS resources associated in the first configuration information is an integer multiple of a first ratio, where the first ratio is the ratio between the size of the frequency domain precoding vector and the bandwidth corresponding to the size of the frequency domain precoding vector; the size of the frequency domain precoding vector is the number of elements contained in the frequency domain precoding vector; the density of the CSI-RS resources is converted into the average number of resource units RE occupied by each port of each resource block RB.

8. The method according to claim 1, characterized in that The code division multiplexing group corresponds to the spatial domain beam vector; and the code sequence used by the port of the channel state information reference signal corresponds to the frequency domain precoding codeword.

9. The method according to claim 1, characterized in that: The code division multiplexing group corresponds to the frequency domain precoding codeword; and the code sequence used by the port of the channel state information reference signal corresponds to the spatial domain beam vector.

10. The method according to claim 1, characterized in that The CSI-RS resource and the information in the CSI report have one of the following corresponding relationships: The port of the channel state information reference signal corresponds to a first dimension combination of a precoding matrix; the first dimension combination of the precoding matrix includes: a spatial domain beam vector and a frequency domain precoding codeword; The M ports of the channel state information reference signal correspond to the first dimension combination of the precoding matrix, and M is a positive integer; The ports of all channel state information reference signals on one code division multiplexing group correspond to the first dimension combination of the precoding matrix.

11. The method according to claim 7, characterized in that The bandwidth corresponding to the CSI report is an integer multiple of the bandwidth corresponding to the size of the frequency domain precoding vector, and the bandwidth corresponding to the CSI report is the bandwidth of the reported channel state information.

12. A method for obtaining information, characterized in that: Applied to a second communication node, comprising: Receive first configuration information sent by a first communication node, the first configuration information comprising: a CSI-RS resource and an SRS resource that are associated at the same time; the CSI-RS resource is used to carry a channel state information reference signal, and the SRS resource is used to carry a sounding reference signal; Feedback a CSI report to the first communication node, where the CSI report is generated based on the measurement of a channel state information reference signal carried on the CSI-RS resource, and the CSI report is used for the first communication node to parse and obtain corresponding channel state information; There is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report; The two dimensions of the CSI-RS resource include: a code division multiplexing group, and a code sequence used by each port in the code division multiplexing group for code division multiplexing; The two dimensions of the precoding matrix in the CSI report include: a spatial domain beam vector and a frequency domain precoding codeword.

13. An information acquisition device, characterized in that: Applied to a first communication node, comprising: A determination module is configured to determine first configuration information of a channel state information CSI report, wherein the first configuration information includes: a channel state information reference signal CSI-RS resource and a sounding reference signal SRS resource that are simultaneously associated; the CSI-RS resource is used to carry the channel state information reference signal, and the SRS resource is used to carry the sounding reference signal; A sending module, configured to send the first configuration information to a second communication node; A first receiving module, configured to receive a CSI report fed back by the second communication node, wherein the CSI report is generated based on a measurement of a channel state information reference signal carried on the CSI-RS resource; A parsing module, configured to obtain corresponding channel state information according to the CSI report; There is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report; The two dimensions of the CSI-RS resource include: a code division multiplexing group, and a code sequence used by each port in the code division multiplexing group for code division multiplexing; The two dimensions of the precoding matrix in the CSI report include: a spatial domain beam vector and a frequency domain precoding codeword.

14. An information acquisition device, characterized in that: Applied to a second communication node, comprising: A second receiving module is configured to receive first configuration information sent by a first communication node, wherein the first configuration information includes: a CSI-RS resource and an SRS resource that are associated at the same time; the CSI-RS resource is used to carry a channel state information reference signal, and the SRS resource is used to carry a sounding reference signal; a feedback module, configured to feed back a CSI report to the first communication node, wherein the CSI report is generated based on a measurement of a channel state information reference signal carried on the CSI-RS resource, and the CSI report is used to enable the first communication node to parse and obtain corresponding channel state information; There is a correspondence between the two dimensions on the CSI-RS resource and the two dimensions of the precoding matrix in the CSI report; The two dimensions of the CSI-RS resource include: a code division multiplexing group, and a code sequence used by each port in the code division multiplexing group for code division multiplexing; The two dimensions of the precoding matrix in the CSI report include: a spatial domain beam vector and a frequency domain precoding codeword.

15. A device, characterized in that include: memory, and one or more processors; The memory is used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 12.

16. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 12 is implemented.

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