Channel state information acquisition method, terminal and network side equipment

Abstract

Disclosed are a channel state information acquisition method, a terminal and a network side device, belonging to the technical field of communications, the channel state information acquisition method of the embodiment of the present application comprising: a terminal acquiring reference signal configuration information, the reference signal configuration information being associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and in all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not completely the same; and the terminal acquires channel state information based on at least one reference signal associated with the reference signal configuration information.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a method for acquiring channel state information, a terminal, and a network-side device. Background Art

[0002] The channel state information (CSI) architecture can be divided into downlink CSI and uplink CSI, which includes downlink physical channels and downlink reference signals; uplink CSI architecture: includes uplink physical channels and uplink reference signals.

[0003] The downlink physical channel is usually used to transmit data, and the downlink reference signal is usually used to perform channel estimation to obtain downlink channel state information (CSI). The uplink physical channel is usually used to transmit uplink data, and the uplink reference signal is usually used to perform channel estimation to obtain uplink channel state information (CSI).

[0004] The network side can configure reference signal resource configuration for the terminal. The terminal obtains corresponding channel information by measuring the reference resources associated with these reference signal resource configurations, and then obtains corresponding CSI information based on the codebook configuration information and report content associated with the CSI report configuration, and feedback based on the uplink channel.

[0005] However, the current CSI acquisition architecture is mainly aimed at acquiring channel state information in the digital domain. For hybrid beamforming technology, one RF link connects multiple antennas or antenna subarrays or virtual antenna subarrays. The terminal may not be able to obtain channel state information on multiple different antennas or antenna subarrays or virtual antenna subarrays based on the reference signal configuration associated with the current reference signal resource configuration. Summary of the invention

[0006] The embodiments of the present application provide a method for obtaining channel state information, a terminal, and a network-side device, which can solve the problem that the terminal cannot obtain channel state information on multiple different antennas or antenna subarrays or virtual antenna subarrays.

[0007] In a first aspect, a method for acquiring channel state information is provided, which is executed by a terminal, and the method includes: the terminal acquires reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not exactly the same; the terminal acquires the channel state information based on at least one reference signal associated with the reference signal configuration information.

[0008] In a second aspect, a method for acquiring channel state information is provided, which is executed by a network side device, and the method includes: the network side device sends reference signal configuration information to a terminal, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same; and receiving the channel state information reported by the terminal.

[0009] According to a third aspect, a device for acquiring channel state information is provided, the device comprising: a first acquisition module, used to acquire reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same; and a second acquisition module, used to acquire the channel state information based on at least one reference signal associated with the reference signal configuration information.

[0010] In a fourth aspect, a device for acquiring channel state information is provided, the device comprising: a first sending module, used to send reference signal configuration information to a terminal, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same; and a receiving module, used to receive the channel state information reported by the terminal.

[0011] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0012] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the first aspect, and the communication interface is used to communicate with an external device.

[0013] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0014] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the second aspect, and the communication interface is used to communicate with an external device.

[0015] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0016] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0017] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0018] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0019] In an embodiment of the present application, a terminal obtains at least one reference signal associated with reference signal configuration information, and the number of ports associated with each of the reference signals is greater than or equal to 1. Since the time slots or symbols associated with all ports of all reference signals associated with the reference signal configuration information are not exactly the same, the network device can use a time division method to associate multiple reference signal ports with multiple different antennas or antenna subarrays or virtual antenna subarrays associated with a radio frequency link, thereby solving the problem that a current reference signal pattern design (i.e., all ports are sent on the same OFDM symbol) cannot allow the terminal to obtain channels on multiple different antennas or antenna subarrays or virtual antenna subarrays, thereby enabling the terminal to obtain channel state information on multiple different antennas or antenna subarrays or virtual antenna subarrays based on at least one time-divided reference signal port.

[0020] In addition, if the terminal feeds back the acquired channel state information to the network side device, the network side device can obtain the simulated beam information associated with the reference signal, or obtain the direct phase information of the antenna or antenna subarray or virtual antenna subarray based on the channel state information reported by the terminal, thereby improving the accuracy of the simulated beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A block diagram showing a wireless communication system to which the embodiments of the present application can be applied;

[0022] Figure 2A schematic diagram showing a flow chart of a method for acquiring channel state information provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of an antenna structure provided by an embodiment of the present application is shown;

[0024] Figure 4 A schematic diagram of another antenna structure provided in an embodiment of the present application is shown;

[0025] Figure 5 A schematic diagram showing a flow chart of a method for acquiring channel state information provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram showing a structure of a device for acquiring channel state information provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram showing a structure of a device for acquiring channel state information provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram showing the structure of a communication device provided in an embodiment of the present application is shown;

[0029] Fig. 9 A schematic diagram showing the hardware structure of a terminal provided in an embodiment of the present application is shown;

[0030] Fig.10 A schematic diagram of the hardware structure of a network side device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0032] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0033] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0034] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0035] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0036] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0037] In order to better understand the technical solution provided by this application, the technology involved in this application is first introduced.

[0038] 1. CSI Architecture

[0039] Generally, the CSI architecture can be divided into two parts: downlink CSI and uplink CSI. Downlink CSI architecture: includes downlink physical channels and downlink reference signals; uplink CSI architecture: includes uplink physical channels and uplink reference signals.

[0040] The downlink physical channel is usually used to transmit data, and the downlink reference signal is usually used to perform channel estimation to obtain downlink channel state information (CSI). The uplink physical channel is usually used to transmit uplink data, and the uplink reference signal is usually used to perform channel estimation to obtain uplink channel state information (CSI).

[0041] In 5G systems, CSI is mainly used in Adaptive Beamforming and MIMO (Multiple Input Multiple Output) technologies to improve wireless transmission bandwidth and reliability.

[0042] In general, the 5G CSI architecture is a very important technology in the 5G communication system, and plays an important role in improving wireless transmission bandwidth and reliability and interference coordination.

[0043] 2. Contents of CSI Report

[0044] Typically, the terminal may determine through higher-layer signaling or default rules that a CSI report may include one of: 'none', 'cri-ri-pmi-cqi', 'cri-RI-i1', 'cri-RI-CQI', 'cri-RSRP', 'cri-SINR', 'ssb-Index-RSRP', 'ssb-Index-SINR' or 'cri-RI-LI-PMI-CQI'.

[0045] If the terminal is configured with CSI-ReportConfig and the upper layer parameter reportQuantity is set to "none", the terminal will not report anything for CSI-ReportConfig.

[0046] 3. CSI acquisition

[0047] The network associates a reference signal resource configuration (CSI-ResourceConfig) for channel measurement, a reference signal resource configuration for interference measurement associated with a CSI-IM (CSI interference measurement) resource, and or a reference signal resource configuration for interference measurement associated with an NZP-CSI RS (non-zero power CSI-RS) resource for each CSI report configuration (CSI-ReportConfig). The terminal obtains the corresponding channel information by measuring the reference resources associated with these resource configurations. Currently, the corresponding channel information can usually be considered as baseband digital precoding matrix information and baseband modulation mode recommendation information. Further, according to the codebook configuration information and report content associated with the CSI report configuration, the corresponding CSI information is obtained, and based on the uplink channel feedback.

[0048] However, using the CSI architecture in the related art, the terminal may not be able to obtain the channel state information on multiple different antennas or antenna subarrays or virtual antenna subarrays according to the reference signal resource configuration associated with the reference signal, and thus cannot obtain or cannot accurately obtain the simulated beam information and recommend it to the network to reduce the complexity of the network or improve the terminal transmission performance. To address this problem, an embodiment of the present application provides a solution for obtaining channel state information.

[0049] The following, in combination with the accompanying drawings, describes in detail the channel state information acquisition method, terminal and network side device provided in the embodiments of the present application through some embodiments and their application scenarios.

[0050] Figure 2 A flow chart of a method for acquiring channel state information in an embodiment of the present application is shown. The method 200 can be executed by a terminal. In other words, the method can be executed by software or hardware installed on the terminal. Figure 2 As shown, the method may include the following steps.

[0051] S210: The terminal obtains reference signal configuration information.

[0052] The reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same.

[0053] Wherein, regarding that the number of ports associated with each reference signal is greater than or equal to 1, it can be understood that:

[0054] If the number of ports associated with each reference signal is 1, all or part of the multiple reference signals may be associated with different transmission times, and the number of associated transmission times may be related to the antenna architecture on the network side. Figure 3 or Figure 4 In the antenna architecture diagram shown, assuming that each transmission receiving link (Transceiver chain, TRX chain) of the network is divided into N sub-arrays, the number of associated transmission times is at least N. Where N is a positive integer. In other words, all reference signals are divided into N reference signal groups, and all reference signal groups are associated with different transmission times or transmission symbols or transmission time slots. Optionally, each reference signal group is associated with multiple reference signals and multiple transmission chains (TRX chains).

[0055] If the number of ports associated with each reference signal is greater than 1, all or part of all ports are associated with different time slots or symbols, that is, associated with different transmission times. In this case, the number of ports associated with a reference signal may be related to the antenna architecture on the network side. Figure 3 or Figure 4 As shown in the antenna architecture diagram, assuming that each TRX chain of the network is divided into N sub-arrays, the number of ports associated with each reference signal can be N or 2N (2 represents 2 polarization directions). At this time, the transmission time associated with all ports of a reference signal may be related to the antenna architecture on the network side. For example: assuming that each TRX chain of the network is divided into N sub-arrays, the port associated with each reference signal is associated with N transmission times. In other words, the port associated with each reference signal is divided into multiple port groups, and all port groups are associated with different transmission times or transmission symbols or transmission time slots; or,

[0056] If the number of ports associated with each reference signal is greater than 1, all ports of each reference signal are associated with the same time slot or symbol, that is, all ports are associated with the same transmission time. In this case, the number of reference signals may be related to the antenna architecture on the network side. Figure 3 or Figure 4 As shown in the antenna architecture diagram, assuming that each TRX chain of the network is divided into N sub-arrays, the number of reference signals can be N. Optionally, at this time, the reference signal port numbering needs to be adjusted, and the i-th (a positive integer) reference signal port of each reference signal is numbered consecutively in the order of reference signal configuration or reference signal ID from small to large. For example: 2 2-port reference signals are configured to obtain the first PMI, then the terminal assumes that the first port of the first reference signal and the first port of the second reference signal are associated with the first TRX link, and the port numbers are 3000 and 3001, and the terminal assumes that the second port of the first reference signal and the second port of the second reference signal are associated with the first TRX link, and the port numbers are 3000 and 3001 or the port numbers are 3002 and 3003.

[0057] S220: The terminal obtains channel state information based on at least one reference signal associated with the reference signal configuration information.

[0058] It can be understood that the terminal can obtain channel state information using one reference signal associated with the reference signal configuration information, that is, the terminal obtains channel state information using a reference signal of at least one configured reference signal. Optionally, the network side device can configure multiple reference signals, and the terminal can select a reference signal from them to obtain channel state information. Optionally, the terminal assumes that the number of ports of each reference signal N = N1*N2, where N1 and N2 represent the number of reference signal ports in the horizontal or vertical dimension or the number of reference signal ports in the vertical and horizontal dimensions, respectively, that is, the terminal assumes that all ports of each reference signal are associated with the same polarization direction.

[0059] In addition, optionally, if the terminal can obtain channel state information through one reference signal associated with the reference signal configuration information, the number of ports associated with the reference signal is greater than 1, and all ports of the reference signal are associated with different transmission times or transmission symbols or transmission time slots, that is, some ports of the reference signal are transmitted at time 1, some ports are transmitted at time 2, and so on. The number of associated transmission times may be related to the antenna architecture on the network side. For example: assuming that each TRX chain of the network is divided into N sub-arrays, the number of associated transmission times is at least N.

[0060] Alternatively, the terminal may obtain channel state information using multiple reference signals associated with the reference signal configuration information, that is, the terminal obtains channel state information using multiple reference signals from at least one configured reference signal. Optionally, the network side device may configure multiple reference signals, from which the terminal may select multiple reference signals to obtain channel state information. Optionally, if multiple reference signals are associated with the reference signal configuration information for obtaining channel state information, the terminal assumes that the number of ports of each reference signal N=N1*N2, where N1 and N2 represent the number of reference signal ports in the horizontal or vertical dimension or the number of reference signal ports in the vertical and horizontal dimensions, respectively, that is, the terminal assumes that all ports of each reference signal are associated with the same polarization direction.

[0061] In addition, optionally, if the terminal can obtain channel state information through multiple reference signals associated with the reference signal configuration information, the number of reference signals is related to the antenna architecture, or the reference signals are associated with different transmission time slots or transmission symbols or transmission times.

[0062] In an embodiment of the present application, a terminal obtains at least one reference signal associated with reference signal configuration information, and the number of ports associated with each of the reference signals is greater than or equal to 1. Since the time slots or symbols associated with all ports of all reference signals associated with the reference signal configuration information are not exactly the same, the network device can use a time division method to associate multiple reference signal ports with multiple different antennas or antenna subarrays or virtual antenna subarrays, thereby solving the problem that the current reference signal pattern design cannot allow the terminal to obtain channels on multiple different antennas or antenna subarrays or virtual antenna subarrays, thereby enabling the terminal to obtain and feedback channel state information on multiple different antennas or antenna subarrays or virtual antenna subarrays based on at least one port of a reference signal.

[0063] In addition, if the terminal feeds back the acquired channel state information to the network side device, the network side device can obtain the information of the simulated beam used for acquisition based on the channel state information reported by the terminal, or use the terminal feedback simulated beam to replace the network side device for traditional beam training to effectively reduce the reference signal overhead and channel state information aging problems.

[0064] In one implementation, the time slots or symbols associated with all ports are not completely the same, including at least one of the following:

[0065] (1) Each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal.

[0066] That is, the at least one reference signal includes a first reference signal, and the time slots or symbols of the ports associated with the first reference signal are different.

[0067] (2) Each of the ports is associated with a different time slot or symbol.

[0068] That is, the time slots or symbols of each port associated with all reference signals are different. Alternatively, one reference signal is associated with one port, which means that each reference signal is associated with a different time slot or symbol.

[0069] (3) Each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal among the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups.

[0070] It is understandable that at least one reference signal includes a second reference signal, and the second reference signal is associated with multiple ports. According to the multiple ports, multiple first port groups are divided, that is, the multiple ports are grouped to obtain multiple first port groups, and each first port group is associated with different time slots or symbols, that is, some ports in the second reference signal are associated with the same time slot or symbol, and some ports are associated with different time slots or symbols. Optionally, the grouping of multiple ports can be that the network indicates to the terminal through signaling that multiple ports can be divided into multiple groups, or, if the terminal divides the ports associated with the same time slot or symbol into one port group, the second reference signal can be divided into multiple port groups.

[0071] (4) All the ports are divided into a plurality of second port groups, each second port group being associated with a different time slot or symbol.

[0072] That is, all ports of all reference signals are grouped to obtain multiple second port groups, each of which is associated with a different time slot or symbol. That is, some of all ports of all reference signals are associated with the same time slot or symbol, and some are associated with different time slots or symbols. Optionally, one reference signal is associated with one port, which means that all reference signals can be divided into multiple reference signal groups according to their associated time slots or symbols, and each reference signal group is associated with a different time slot or symbol.

[0073] In one implementation, the multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signals associated with each reference signal group are used to obtain the channel state information. Exemplarily, assuming that there are 8 reference signals in total, the 8 reference signals are divided into 2 groups by default, that is, 4 reference signals are divided into 1 group by default; or, every 8 ports are 1 group, and the reference signal groups are divided in sequence according to the reference signal configuration order. It should be noted that the division method may include terminal division, indication by the network side device through high-level signaling, and agreement by protocol, etc., wherein terminal division means that the terminal can divide multiple reference signals into multiple reference signal groups according to a certain rule, and the terminal division is performed by the terminal itself without signaling notification.

[0074] In addition, in particular, when each reference signal group has only one reference signal, it may be selected not to divide the reference signal groups, that is, the terminal may obtain channel state information through each reference signal.

[0075] Further, in one implementation, the first number of reference signal groups associated with the reference signal configuration information is not less than the second number fed back by the terminal. It is understandable that for all reference signal groups, the terminal assumes that the network uses the same transmit beam or downlink spatial transmission filter. Then, the terminal can use different receive beams to receive multiple reference signal groups, thereby obtaining the optimal beam vectors of multiple terminal sides; or, the terminal can use different antenna subarrays to receive multiple reference signal groups, in which case the first number of reference signal groups is related to the antenna architecture of the terminal or the second number fed back by the terminal. That is, the first number of reference signal groups associated with the reference signal configuration information is not less than the second number fed back by the terminal. For example: assuming that each TRX chain of the terminal is divided into N subarrays, the number of associated reference signal groups is at least N. In this implementation, combining the beam training process of the receiving beam on the terminal side with the acquisition and feedback of the channel state information by the terminal can effectively reduce the delay of the beam training process.

[0076] Alternatively, in another possible implementation, the terminal may use different antenna subarrays to receive multiple reference signals, thereby obtaining multiple optimal beam vectors on the terminal side. At this time, the number of reference signals is related to the antenna architecture of the terminal or the first number fed back by the terminal. That is, the number of reference signals associated with the reference signal configuration information is not less than the first number fed back by the terminal. For example: assuming that each TRX chain of the terminal is divided into N subarrays, the number of associated reference signals is at least N. In this implementation, the terminal does not need to use a large number of predefined receive beams for beam training. A large number of predefined beams may cause the network to need to configure a large number of reference signals for terminal receive beam training. Since there are fewer antennas on the terminal side, this subarray-based receive beam training, in which the terminal calculates the receive beam by acquiring the channel, can effectively reduce the number of reference signals required by the terminal.

[0077] In one implementation, the method also includes: the terminal feeds back at least one reference signal indication or at least one reference signal group indication, the reference signal indication is used to indicate that the terminal selects a reference signal for obtaining the channel state information, and the reference signal group indication is used to indicate that the terminal selects a reference signal group for obtaining the channel state information.

[0078] It can be understood that one reference signal corresponds to one reference signal indication, and one reference signal group corresponds to one reference signal group indication. Then, when each reference signal group has only one reference signal, the reference signal group corresponds to a reference signal indication instead of a reference signal group indication. Because, when each reference signal group has only one reference signal, it is possible to choose not to divide the reference signal groups, that is, the terminal can obtain channel state information through each reference signal. In another implementation, the number of reference signal indications or reference signal group indications fed back by the terminal is determined according to network high-layer signaling.

[0079] In one implementation, the multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups according to a predetermined rule or network signaling. That is, the multiple reference signals may be divided into multiple reference signal groups according to a predetermined rule of a protocol or by network signaling.

[0080] In one implementation, all ports of each reference signal are associated with the same polarization direction. Polarization direction refers to the polarization direction of the antenna when receiving the reference signal, and the polarization direction can be horizontal polarization, vertical polarization, or slant polarization. In this implementation, all ports of each reference signal are associated with the same polarization direction, which can reduce polarization loss, improve signal transmission reliability and performance, and improve network configuration flexibility.

[0081] Optionally, whether all ports of each reference signal are associated with the same polarization direction may be determined through a network high-layer signaling indication.

[0082] In one implementation, the terminal acquires the channel state information based on at least one reference signal associated with the reference signal configuration information, which may include at least one of the following (1) to (4):

[0083] (1) The terminal acquires the channel state information based on all ports of at least one reference signal associated with the reference signal configuration information.

[0084] It can be understood that in this implementation, the terminal assumes that a string of data symbols or a signal waveform is mapped to a port of a reference signal and sent. The following is a specific description using the channel state information including the target PMI or the target PMI part as an example. For the acquisition of the target PMI, the terminal assumes that a string of data symbols or a signal waveform is mapped to all ports of a reference signal and sent, or the terminal assumes that a data symbol or reference signal output by a TRX chain is mapped to all ports of a reference signal and sent, that is, the acquisition formula of the target PMI or the target PMI part can be any one of the following:

[0085] (a)

[0086] (b)

[0087] (c)

[0088] (d)

[0089] in, represents a vector, 1≤j≤N, N represents N reference signals, and represents the signal or symbol transmitted on the antenna port or reference signal port [3000,…,3000+P-1]; W j (i) represents the target PMI part associated with reference signal j, and the target PMI part represents a sub-matrix or sub-vector of the matrix or vector associated with the target PMI. If reference signal j is associated with two polarization directions, then W j (i) is a block diagonal matrix. In this case, a string of data symbols or a signal waveform is mapped to part of the ports of a reference signal (usually half of the ports) and sent out. Indicates that two signal waveforms or transmission symbols or data symbols are associated with two polarization directions. represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. W dig,j (i) represents the row vector associated with the jth reference signal in the precoding matrix acting on Represents a signal waveform or transmission symbol or data symbol. W represents N signal waveforms or transmission symbols or data symbols. dig (i) represents the precoding matrix acting on

[0090] In addition, in this example, one reference signal is associated with one TRX chain or N reference signals are associated with N TRX chains.

[0091] In addition, when the terminal obtains channel state information including the target PMI or the target PMI strength associated with the target PMI part, or the target PMI part strength information associated with the target PMI part, the target PMI strength or the target PMI part strength information can also be obtained based on the above formula or the above assumption.

[0092] (2) The terminal obtains the channel state information based on some ports of at least one reference signal associated with the reference signal configuration information.

[0093] It can be understood that the terminal assumes that a string of data symbols or a signal waveform is mapped to a reference signal part port and sent. The following is a specific description of the channel state information including the target PMI or the target PMI part. For the acquisition of the target PMI or the target PMI part, the terminal assumes that a string of data symbols or a signal waveform is mapped to a reference signal part port and sent, or the terminal assumes that a data symbol or reference signal output by a TRX chain is mapped to a reference signal part port and sent, which may specifically include the following 1) to 3) cases:

[0094] 1) A string of data symbols or a signal waveform is mapped to a part of the reference signal port and sent out. That is, the formula for obtaining the target PMI or the target PMI part can be any of the following:

[0095] (a)

[0096] (b)

[0097] in, is a vector, 1≤j≤N, N represents N reference signals, representing the signal or symbol transmitted on the antenna port or reference signal port [3000,…,3000+P-1]. j (i) represents the target PMI part associated with reference signal j, and the target PMI part represents a sub-matrix or sub-vector of the matrix or vector associated with the target PMI. If reference signal j is associated with two polarization directions, then W j (i) is a block diagonal matrix. In this case, a string of data symbols or a signal waveform is mapped to part of the ports of a reference signal (usually half of the ports) and sent out. Indicates that two signal waveforms or transmission symbols or data symbols are associated with two polarization directions. represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. W dig,j (i) indicates that the two row vectors (associated with two polarization directions) of the precoding matrix associated with the jth reference signal act on Indicates that two signal waveforms or transmission symbols or data symbols are associated with two polarization directions.

[0098] In this example, one reference signal is associated with two TRX chains or one reference signal is associated with two polarization directions.

[0099] In addition, when the terminal acquires channel state information including target PMI strength or target PMI part strength information associated with the target PMI or the target PMI part, the target PMI strength or the target PMI part strength information may also be obtained based on the above formula or the above assumption.

[0100] 2) N reference signals are associated with 2N TRX chains, and in the 2N TRX chains, every two strings of data symbols or two signal waveforms are mapped to a port of a reference signal and sent out. That is, the formula for obtaining the target PMI or the target PMI part can be any of the following:

[0101] (a)

[0102] (b) in, is a vector, 1≤j≤N, N represents N reference signals, representing the signal or symbol transmitted on the antenna port or reference signal port [3000,…,3000+P-1]. W represents the target PMI. k (i), 1≤k≤2N represents a target PMI part associated with a reference signal, and the target PMI part represents a sub-matrix or sub-vector of a matrix or vector associated with the target PMI. It indicates that 2N signal waveforms or transmission symbols or data symbols are associated with two polarization directions (from 0 to 2N-1, with every two associated with a reference signal). Represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. Represents 2N signal waveforms or transmission symbols or data symbols. dig (i) represents the precoding matrix acting on Where W dig The row vector numbers of (i) are associated with a reference signal every two rows in ascending order. At this time, a string of data symbols or a signal waveform is mapped to a part of the ports of a reference signal and sent out.

[0103] In addition, when the terminal obtains channel state information including the target PMI or the target PMI strength associated with the target PMI part, or the target PMI part strength information associated with the target PMI part, the target PMI strength or the target PMI part strength information can also be obtained based on the above formula or the above assumption.

[0104] 3) N reference signals are associated with 2N TRX chains, and the first half of the ports in each reference signal are associated with one polarization direction, and the second half of the ports are associated with another polarization direction. That is, the formula for obtaining the target PMI or the target PMI part can be any of the following:

[0105] (a)

[0106] (b) in, is a vector, 1≤j≤N, N represents N reference signals, representing the signal or symbol transmitted on the antenna port or reference signal port [3000,…,3000+P-1]. W represents the target PMI. k (i), 1≤k≤2N represents a target PMI part associated with a certain reference signal, and the target PMI part represents a sub-matrix or sub-vector of a matrix or vector associated with the target PMI.

[0107] It indicates that 2N signal waveforms or transmission symbols or data symbols are associated with two polarization directions (the first half is associated with one polarization direction, and the second half is associated with the other polarization direction). Represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. Represents 2N signal waveforms or transmission symbols or data symbols. dig (i) represents the precoding matrix acting on Where W dig The row vector numbers of (i) are in ascending order, with the first half of the row vectors associated with one polarization direction and the second half of the row vectors associated with another polarization direction. At this time, a string of data symbols or a signal waveform is mapped to a part of the ports of a reference signal and sent out.

[0108] When the terminal acquires channel state information including the target PMI or the target PMI strength associated with the target PMI part, or the target PMI part strength information associated with the target PMI part, the target PMI strength or the target PMI part strength information may also be obtained based on the above formula or the above assumption.

[0109] (3) The terminal obtains the channel state information based on part of ports of each reference signal among the multiple reference signals associated with the reference signal configuration information.

[0110] It can be understood that the terminal assumes that a string of data symbols or a signal waveform is mapped to multiple reference signals and sent on some ports of each reference signal. The following is a specific explanation using the channel state information including the target PMI or the target PMI part as an example. For the acquisition of the target PMI or the target PMI part, the terminal assumes that a string of data symbols or a signal waveform is mapped to some ports of a reference signal and sent, or the terminal assumes that a data symbol or reference signal output by a TRX chain is mapped to some ports of a reference signal and sent, that is, P reference signal ports are associated with P TRX chains. Then, the formula for obtaining the target PMI can be any one of the following (a)-(b):

[0111] (a)

[0112] (b) in, is a vector, 1≤j≤N, N represents N reference signals, and represents a signal or symbol transmitted on an antenna port or N reference signal ports. W represents the target PMI. k (i), 1≤k≤P represents a target PMI part associated with N reference signals, and the target PMI part represents a sub-matrix or sub-vector of a matrix or vector associated with the target PMI.

[0113] Represents P signal waveforms or transmission symbols or data symbols. Represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. W represents P signal waveforms or transmission symbols or data symbols. dig (i) represents the precoding matrix acting on At this time, a string of data symbols or a signal waveform is mapped to a part of the reference signal port and sent out. dig The row vector numbers of (i) are in ascending order: the first half of the row vectors are associated with one polarization direction, and the second half of the row vectors are associated with another polarization direction.

[0114] In addition, when the terminal obtains channel state information including the target PMI or the target PMI part associated with the target PMI, or the target PMI part strength information associated with the target PMI or the target PMI part, the target PMI strength or the target PMI part strength information can also be obtained based on the above formula or the above assumption.

[0115] (4) The terminal obtains the channel state information based on all ports of multiple reference signals associated with the reference signal configuration information.

[0116] It is understandable that the terminal assumes that a string of data symbols or a signal waveform is mapped to all ports of multiple reference signals and sent out. The following is a specific explanation using the channel state information including the target PMI or the target PMI part as an example. For the acquisition of the target PMI or the target PMI part, the terminal assumes that a string of data symbols or a signal waveform is mapped to the ports of multiple reference signals and sent out, or the terminal assumes that the data symbols or reference signals output by a TRX chain are mapped to the ports of multiple reference signals and sent out. That is (N reference signals are associated with K TRX chains, and N and K are both positive integers). Then, the formula for obtaining the target PMI can be any one of the following (a) and (b):

[0117] (a)

[0118] (b)

[0119] in, is a vector, 1≤j≤N, N represents N reference signals, representing the signal or symbol transmitted on the antenna port or reference signal port [3000,…,3000+P-1]. k (i), 1≤k≤K represents a target PMI part associated with multiple reference signals, wherein the target PMI part represents a sub-matrix or sub-vector of a matrix or vector associated with the target PMI, and the target PMI part represents mapping a data symbol or reference signal output by a TRX chain to ports of multiple reference signals for transmission. Represents K signal waveforms or transmission symbols or data symbols. Represents the PDSCH symbol vector associated with rank v. P represents the number of ports or antenna ports associated with a reference signal. W represents K signal waveforms or transmission symbols or data symbols. dig (i) represents the precoding matrix acting on

[0120] Optionally, for N=8, K=2, P=1, then

[0121]

[0122] Denotes each target PMI part W k (i), 1≤k≤2 is associated with half of the reference signal, and the target PMI part represents a sub-matrix or sub-vector of the matrix or vector associated with the target PMI.

[0123] In addition, when the terminal obtains channel state information including target PMI or target PMI strength associated with part of the target PMI, or target PMI part strength information associated with part of the target PMI or the target PMI, the target PMI strength or target PMI part strength information can also be obtained based on the above formula or the above assumption.

[0124] In the embodiment of the present application, the uses of the target PMI or the target PMI part include but are not limited to the following:

[0125] (1) The target PMI or the target PMI portion is used to simulate beamforming;

[0126] (2) The target PMI or the target PMI part acts on analog domain signal processing;

[0127] (3) The target PMI or the target PMI portion is used to process the signal sent from the baseband to the radio frequency and finally radiate it through the antenna;

[0128] (4) The target PMI or the target PMI part maps the data symbols or reference signals output by at least one TRX chain to multiple antennas or antenna subarrays or virtual antenna subarrays for transmission;

[0129] For example, the target PMI or the target PMI part corresponds to a module in the beamforming or precoding technology, such as the analog beamforming of the hybrid beamforming technology. The target PMI or the target PMI part can be used to instruct the network side device to perform analog beamforming or adjust the analog beam, or to enable the network to obtain the precoding matrix for precoding operations, or to obtain the beam adjustment weight to adjust the analog beam.

[0130] In this implementation, one reference signal may be associated with multiple ports, and the terminal may obtain channel state information based on some or all ports of one reference signal, or based on some or all ports of multiple reference signals.

[0131] In one implementation, the channel state information includes at least one of the following: target PMI, target PMI strength, target PMI part, target PMI part strength, channel quality indicator (Channel Quality Indicator, CQI). It is understandable that the terminal uses the reference signal configuration information to associate multiple reference signals to obtain channel state information, and the channel state information may include: target PMI or target PMI strength or CQI, wherein the target PMI is usually associated with a matrix or a vector, which is used for the network to obtain a precoding matrix for precoding operations or to obtain beam adjustment weights to adjust analog beams, for example: used for the network to obtain APMI (analog PMI).

[0132] The target PMI strength or the target PMI partial strength includes but is not limited to: Reference Signal Receiving Power (RSRP), Signal to Interference plus Noise Ratio (SINR), RSRP index, SINR index, etc. The RSRPindex and SINR index are associated with a row or a column of an RSRP or SINR table. Optionally, the target PMI strength can be obtained by the target PMI. Optionally, the target PMI partial strength can be obtained by the target PMI part.

[0133] For example: the target PMI strength is RSRP or associated RSRP, where RSRP is defined as the linear average of the power contribution (in [W]) of all or part of the REs (resource elements) after all or part of the antenna ports of the reference signal are multiplied by the target PMI within the considered measurement bandwidth in the configured reference signal measurement opportunity. Or, within the considered measurement bandwidth, the linear average of the power contribution (in [W]) of all or part of the REs (resource elements) after all or part of the antenna ports of the reference signal are precoded using the target PMI.

[0134] For example: the target PMI part strength is RSRP or associated RSRP, where RSRP is defined as the linear average of the power contribution (in [W]) of all or part of the RE (resource element) after all or part of the antenna ports of the reference signal are multiplied by the target PMI part within the considered measurement bandwidth in the configured reference signal measurement opportunity. Or, within the considered measurement bandwidth, the linear average of the power contribution (in [W]) of all or part of the RE (resource element) after all or part of the antenna ports of the reference signal are precoded using the target PMI part.

[0135] In one implementation, when the channel state information includes a target PMI, the target PMI is composed of at least one target PMI part, wherein the target PMI part refers to a sub-matrix of a matrix associated with the target PMI, or a sub-vector of a vector associated with the target PMI.

[0136] In one implementation, when the channel state information includes a target PMI part, the network obtains the at least one target PMI based on at least one target PMI part, wherein the target PMI part refers to a sub-matrix of a matrix associated with the target PMI, or a sub-vector of a vector associated with the target PMI.

[0137] In an implementation manner, when the channel state information includes a target PMI part, the one target PMI part is associated with one TRX chain or two TRX chains. Optionally, when two TRX chains are associated, the two TRX chains are associated with two polarization directions.

[0138] In one implementation, a target PMI part indicates that a data symbol or reference signal output by a TRX chain is mapped to a port of at least one reference signal for transmission, or a target PMI part indicates that a data symbol or reference signal output by two TRX chains is mapped to a port of at least one reference signal for transmission.

[0139] In one implementation, a target PMI part indicates that a data symbol or reference signal output by a TRX chain is mapped to multiple reference signal ports for transmission, or a target PMI part indicates that a data symbol or reference signal output by two TRX chains is mapped to multiple reference signal ports for transmission.

[0140] In one implementation, the method further includes at least one of the following:

[0141] (1) For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part.

[0142] Exemplarily, assuming that N reference signals are used to obtain the target PMI, and the N reference signals are associated with antennas in two polarization directions, the terminal assumes that the first N / 2 reference signals configured by the network are associated with the first polarization, and the last N / 2 reference signals are associated with the second polarization, and the first reference signal associated with the first polarization direction and the first reference signal associated with the second polarization share the same target PMI part, the second reference signal associated with the first polarization direction and the second reference signal associated with the second polarization are associated with the same target PMI part, and so on.

[0143] Exemplarily, the network instructs the terminal to associate N reference signals with the same target PMI part, and the terminal obtains the target PMI part according to the N reference signals, where the target PMI part is shared by the N reference signals.

[0144] (2) For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple ports of a reference signal associated with the reference signal configuration information are associated with the same target PMI part.

[0145] Exemplarily, assuming that P ports of a reference signal are used to obtain the target PMI, and the reference signal is associated with antennas in two polarization directions, that is, the first P / 2 ports of a reference signal are associated with one polarization direction, and the second P / 2 ports are associated with one polarization direction, then its 1st to Kth ports are associated with the same target PMI part as the P / 2+1st to P / 2+Kth ports, and the K+1st to 2Kth ports are associated with the same target PMI part as the P / 2+K+1st to P / 2+2Kth ports, and so on. K is obtained through high-level signaling or default rules, for example: the default K=P / 2, that is, the first P / 2 ports of a reference signal are associated with one polarization direction, and the second P / 2 ports are associated with one polarization direction, then its 1st to P / 2th ports are associated with the same target PMI part as the P / 2+1st to Pth ports.

[0146] Alternatively, assuming that N reference signals are used to obtain the target PMI, and the N reference signals are associated with antennas in two polarization directions, the terminal assumes that the first half of the ports of each reference signal configured by the network are associated with one polarization direction, and the second half of the ports are associated with another polarization direction, and for any reference signal, its first port is associated with the same target PMI part as the P / 2+1th port, the second port is associated with the same target PMI part as the P / 2+2th port, and so on.

[0147] (3) For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that at least one port of a plurality of reference signals associated with the reference signal configuration information is associated with the same target PMI part.

[0148] Exemplarily, assuming that two reference signals are used to obtain the target PMI, and each reference signal is associated with two ports, a target PMI part is obtained according to the first reference signal and the first port of the second reference signal, and the first reference signal and the first port of the second reference signal are associated with the same target PMI part. Another target PMI part is obtained according to the first reference signal and the second port of the second reference signal, and the first reference signal and the second port of the second reference signal are associated with the same target PMI part.

[0149] (4) For one target PMI, the terminal associates the same target PMI part with two polarization directions by default.

[0150] In one implementation, the method may further include one of the following:

[0151] (1) The terminal determines the number of target PMIs or the number of target PMI parts to be fed back according to high-layer signaling.

[0152] That is, the number of target PMIs or the number of target PMI parts may be determined according to network high-layer signaling, or may not exceed a value indicated by network high-layer signaling.

[0153] (2) The terminal determines the number of target PMIs or the number of target PMI parts to be fed back and indicates it to the network.

[0154] In one implementation, after the terminal obtains channel state information based on at least one reference signal associated with the reference signal configuration information, the method further includes: the terminal feeds back at least one target PMI part for obtaining the target PMI, that is, so that the network side device obtains the target PMI according to the at least one target PMI part. It can be understood that the target PMI is composed of multiple target PMI parts respectively associated with different antenna subarrays, the terminal feeds back each target PMI part to the network, the network uses the target PMI part to form the target PMI, and the number of target PMI parts fed back by the terminal for each subarray can be different.

[0155] In one implementation, when the terminal feedback is greater than a target PMI part, it may include at least one of the following:

[0156] (1) For each reference signal associated with the reference signal configuration information, the terminal feeds back target PMI parts with different numbers.

[0157] That is, for each reference signal, the number of target PMI parts fed back by the terminal can be different. For example, the network configures the terminal to use 2 reference signals to obtain N target PMIs:

[0158] The target PMI is composed of two target PMI parts (W APMI1 and W APMI2 ), wherein the first target PMI part is associated with the first reference signal, and the second target PMI part is associated with the second reference signal, and the network instructs (or the terminal determines according to the high-level signaling) the terminal to obtain K1 target PMI parts according to the first reference signal and obtain K2 target PMI parts according to the second reference signal. Optionally, K1 and K2 may not be equal. Further, optionally, the network may instruct the terminal to feedback a number of target PMIs of N, and N is less than K1*K2.

[0159] (2) For multiple port groups of a reference signal associated with the reference signal configuration information, the terminal feeds back target PMI parts of different quantities, wherein each port group is associated with at least one port.

[0160] That is, for each reference signal port group, the number of target PMI parts fed back by the terminal can be different. For example: the network configures the terminal to use 2 port groups of a reference signal to obtain N target PMIs The target PMI is composed of two target PMI parts (W APMI1 and W APMI2 ), wherein the first target PMI part is associated with the first port group, the second target PMI part is associated with the second port group, and the network instructs (or the terminal determines according to the high-level signaling) the terminal to obtain K1 target PMI parts according to the first port group and K2 target PMI parts according to the second port group. Optionally, K1 and K2 may not be equal. Further, optionally, the network may instruct the terminal to feedback a number of target PMIs of N, and N is less than K1*K2.

[0161] (3) For multiple port groups of multiple reference signals associated with the reference signal configuration information, the terminal feeds back target PMI parts of different quantities, wherein each port group is associated with multiple reference signals.

[0162] That is, for all port groups of all reference signals, the number of target PMI parts fed back by the terminal can be different. For example: the network configures the terminal to use 2 port groups to obtain N target PMIs The target PMI is composed of two target PMI parts (W APMI1 and WAPMI2 ), wherein the first target PMI part is associated with the first port group, the second target PMI part is associated with the second port group, and the network instructs (or the terminal determines according to the high-level signaling) the terminal to obtain K1 target PMI parts according to the first port group and K2 target PMI parts according to the second port group. Optionally, K1 and K2 may not be equal. Further, optionally, the network may instruct the terminal to feedback a number of target PMIs of N, and N is less than K1*K2.

[0163] (4) For multiple reference signal groups of multiple reference signals associated with the reference signal configuration information, the terminal feeds back target PMI parts with different numbers, wherein each reference signal group is associated with multiple reference signals.

[0164] In one implementation, when a terminal obtains channel state information based on multiple or multiple groups of reference signals, the terminal needs to obtain a reference signal or a reference signal group indication to indicate to the network the association between the channel state information fed back by the terminal and the reference signal or reference signal group.

[0165] For example, the network configures the terminal to use 4 reference signals to obtain N target PMIs The target PMI is associated with a reference signal, and the network indicates through high-level signaling (or the terminal determines according to high-level signaling) that the number of target PMIs fed back by the terminal is N, and N is less than 4. At this time, the terminal needs to feed back a reference signal indication for indicating the reference signals associated with the N target PMIs respectively.

[0166] like Figure 5 As shown, an embodiment of the present application provides another flow chart 500 of a method for acquiring channel state information. The method can be executed by a network side device. In other words, the method can be executed by software or hardware installed on the network side device. The method includes the following steps:

[0167] S501: A network-side device sends reference signal configuration information to a terminal.

[0168] The reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same.

[0169] It should be noted that for the specific content of the reference signal configuration information, please refer to Figure 2 The relevant contents of the method embodiment shown will not be repeated here.

[0170] S502: Receive channel state information reported by the terminal.

[0171] The channel state information includes at least one of the following: a target PMI, a target PMI strength, and a channel quality indication CQI.

[0172] In an embodiment of the present application, a network side device sends at least one reference signal associated with reference signal configuration information to a terminal. Since the number of ports associated with each of the reference signals is greater than or equal to 1, the time slots or symbols associated with all ports of all reference signals associated with the reference signal configuration information are not exactly the same, which can assist the terminal in obtaining channel state information more accurately.

[0173] In one implementation, the time slots or symbols associated with all ports are not completely the same, which may include at least one of the following:

[0174] (1) each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal;

[0175] (2) each of the ports is associated with a different time slot or symbol;

[0176] (3) each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal in the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups;

[0177] (4) All the ports are divided into a plurality of second port groups, each second port group being associated with a different time slot or symbol.

[0178] In an implementation manner, before receiving the channel state information reported by the terminal, the method further includes:

[0179] The network side device sends network signaling to the terminal, wherein the network signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signal associated with each reference signal group is used to obtain the channel state information.

[0180] In an implementation manner, after the network side device sends network signaling to the terminal, the method further includes:

[0181] The network side device obtains at least one reference signal indication or at least one reference signal group indication fed back by the terminal, wherein the reference signal indication is used to instruct the terminal to select a reference signal for obtaining the channel state information, and the reference signal group indication is used to instruct the terminal to select a reference signal group for obtaining the channel state information.

[0182] In one implementation, before the network side device obtains at least one reference signal indication or at least one reference signal group indication fed back by the terminal, the method further includes: the network side device sends a first high-layer signaling to the terminal, wherein the first high-layer signaling is used to indicate the number of reference signal indications fed back by the terminal or the number of reference signal group indications fed back by the terminal.

[0183] In an implementation manner, when the channel state information includes a target PMI, the one target PMI is composed of at least one target PMI part.

[0184] In an implementation manner, before receiving the channel state information reported by the terminal, the method further includes at least one of the following:

[0185] (1) The network-side device sends a second higher-layer signaling to the terminal, wherein the higher-layer signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part.

[0186] (2) the network side device sends a third high-layer signaling to the terminal, wherein the high-layer signaling is used to indicate that at least one port of the multiple reference signals associated with the reference signal configuration information is associated with the same target PMI part;

[0187] (3) The network side device sends a fourth higher layer signaling to the terminal, wherein the fourth higher layer signaling is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal.

[0188] (4) The network-side device receives indication information sent by the terminal, wherein the indication information is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal.

[0189] In one implementation, the method may further include: for a target PMI, the network side device defaults that two polarization directions are associated with the same target PMI part. That is, in this implementation, the network side device and the terminal default that two polarization directions of a target PMI are associated with the same target PMI part.

[0190] In one implementation, the method may further include one of the following:

[0191] For a target PMI, the network side device associates two polarization directions with the same target PMI part by default;

[0192] For a target PMI part, the network side device establishes an association relationship according to all ports of a reference signal associated with the target PMI part;

[0193] For a target PMI part, the network side device establishes an association relationship according to the target PMI part and associating a part of ports of a reference signal;

[0194] For a target PMI part, the network side device establishes an association relationship according to some ports of each reference signal in the plurality of reference signals associated with the target PMI part;

[0195] For a target PMI part, the network side device establishes an association relationship according to all ports of multiple reference signals associated with the target PMI part.

[0196] In the above implementation, the establishing of the association relationship includes but is not limited to: obtaining the association relationship of the RF link to the antenna array connection, or obtaining the association relationship of the RF port to the antenna array port connection, or obtaining the analog beamforming matrix. For example, the network side device assumes which reference signal ports a target PMI part corresponds to, further determines which antenna subarrays it is associated with, and then sets the analog beamforming weights of these antenna subarrays according to the target PMI part.

[0197] In one implementation, the receiving the channel state information reported by the terminal may include at least one of the following:

[0198] (1) receiving at least one target PMI part fed back by the terminal, and acquiring a target PMI according to the at least one target PMI part;

[0199] (2) receiving the number of target PMI parts fed back by the terminal;

[0200] (3) Receive the number of target PMIs fed back by the terminal.

[0201] Through the above-mentioned embodiment, the network side device can obtain the target PMI according to the feedback of the terminal.

[0202] It should be noted that for the specific contents of the above implementation methods, please refer to Figure 2 The relevant contents of the method embodiment shown will not be repeated here.

[0203] In one implementation, the receiving of the channel state information reported by the terminal includes: receiving at least one target PMI part fed back by the terminal, and obtaining the target PMI according to the at least one target PMI part. It can be understood that the target PMI is composed of multiple target PMI parts respectively associated with different antenna subarrays, and the terminal feeds back each target PMI part to the network, and the network side device can use the target PMI part to form the target PMI.

[0204] Figure 6 A schematic diagram showing a structure of a device for acquiring channel state information provided in an embodiment of the present application is shown as follows: Figure 6 As shown, the acquisition device 600 mainly includes: a first acquisition module 601 and a second acquisition module 602 .

[0205] In an embodiment of the present application, a first acquisition module 601 is used to acquire reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same; a second acquisition module 602 is used to acquire channel state information based on at least one reference signal associated with the reference signal configuration information.

[0206] In one implementation, the time slots or symbols associated with all ports are not completely the same, including at least one of the following:

[0207] Each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal;

[0208] Each of said all ports is associated with a different time slot or symbol;

[0209] Each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal in the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups;

[0210] All the ports are divided into a plurality of second port groups, and each second port group is associated with a different time slot or symbol.

[0211] In one implementation, the multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signals associated with each of the reference signal groups are used to obtain the channel state information.

[0212] In an implementation manner, a first number of reference signal groups associated with the reference signal configuration information is not less than a second number of reference signal groups fed back by the terminal.

[0213] In one implementation, the acquisition device 600 also includes a first feedback module 603, which is used to feedback at least one reference signal indication or at least one reference signal group indication, wherein the reference signal indication is used to indicate that the terminal selects a reference signal for obtaining the channel state information, and the reference signal group indication is used to indicate that the terminal selects a reference signal group for obtaining the channel state information.

[0214] In one implementation, the number of reference signal indications or reference signal group indications is determined according to network high-layer signaling.

[0215] In an implementation manner, the multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups according to a predetermined rule or network signaling.

[0216] In an implementation manner, when the reference signal configuration information is associated with at least one reference signal for obtaining CSI information, all ports of each reference signal are associated with the same polarization direction.

[0217] In one implementation, the second acquisition module 602 is configured to perform at least one of the following:

[0218] Acquire the channel state information based on all ports of at least one reference signal associated with the reference signal configuration information;

[0219] Acquire the channel state information based on some ports of at least one reference signal associated with the reference signal configuration information;

[0220] Acquire the channel state information based on part of ports of each reference signal in a plurality of reference signals associated with the reference signal configuration information;

[0221] The channel state information is acquired based on all ports of multiple reference signals associated with the reference signal configuration information.

[0222] In one implementation, the channel state information includes at least one of the following: a target PMI, a target PMI strength, a channel quality indication CQI, a target PMI part, and a target PMI part strength; and the one target PMI is composed of at least one target PMI part.

[0223] In one implementation, the acquisition device 601 is further used for at least one of the following:

[0224] For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part;

[0225] For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple ports of a reference signal associated with the reference signal configuration information are associated with the same target PMI part;

[0226] For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that at least one port of a plurality of reference signals associated with the reference signal configuration information is associated with the same target PMI part;

[0227] For one target PMI, the terminal associates the same target PMI part with two polarization directions by default.

[0228] In one implementation, the acquisition device 600 is further used for one of the following:

[0229] Determine the number of target PMIs or the number of target PMI parts fed back according to the high-layer signaling;

[0230] The number of target PMIs or the number of target PMI parts to be fed back is determined and indicated to the network.

[0231] In an implementation manner, the acquisition device 600 further includes a second feedback module 604, which is used to feed back at least one target PMI part, so that the network side device acquires the target PMI according to the at least one target PMI part.

[0232] In one implementation, when the second feedback module 604 feeds back a portion greater than a target PMI, at least one of the following is included:

[0233] For each reference signal associated with the reference signal configuration information, feedback a target PMI part with different numbers;

[0234] For a plurality of port groups of a reference signal associated with the reference signal configuration information, feeding back target PMI parts with different numbers, wherein each port group is associated with at least one port;

[0235] For multiple port groups of multiple reference signals associated with the reference signal configuration information, feeding back target PMI parts with different numbers, wherein each port group is associated with multiple reference signals;

[0236] For multiple reference signal groups of multiple reference signals associated with the reference signal configuration information, the terminal feeds back target PMI parts with different numbers, wherein each reference signal group is associated with multiple reference signals.

[0237] The channel state information acquisition device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be another device other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0238] The channel state information acquisition device provided in the embodiment of the present application can achieve Figure 2 The various processes implemented by the terminal in the method embodiment shown achieve the same technical effect, and will not be described again here to avoid repetition.

[0239] Figure 7 A schematic diagram showing a structure of a device for acquiring channel state information provided in an embodiment of the present application is shown as follows: Figure 7 As shown, the acquisition device 700 mainly includes: a first sending module 701 and a receiving module 702.

[0240] In an embodiment of the present application, a first sending module 701 is used to send reference signal configuration information to a terminal, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same; a receiving module 702 is used to receive channel state information reported by the terminal.

[0241] In one implementation, the time slots or symbols associated with all ports are not completely the same, including at least one of the following:

[0242] Each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal;

[0243] Each of said all ports is associated with a different time slot or symbol;

[0244] Each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal in the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups;

[0245] All the ports are divided into a plurality of second port groups, and each second port group is associated with a different time slot or symbol.

[0246] In one implementation, the acquisition device 700 also includes a second sending module 703, which is used to send network signaling to the terminal, wherein the network signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signal associated with each reference signal group is used to obtain the channel state information.

[0247] In one implementation, the acquisition device 700 also includes an acquisition module 704, which is used to obtain at least one reference signal indication or at least one reference signal group indication fed back by the terminal, wherein the reference signal indication is used to indicate that the terminal selects a reference signal for obtaining the channel state information, and the reference signal group indication is used to indicate that the terminal selects a reference signal group for obtaining the channel state information.

[0248] In one implementation, the acquisition device 700 also includes a third sending module 705, which is used to send a first high-layer signaling to the terminal, wherein the first high-layer signaling is used to indicate the number of reference signal indications fed back by the terminal or the number of reference signal group indications fed back by the terminal.

[0249] In an implementation manner, when the channel state information includes a target PMI, the one target PMI is composed of at least one target PMI part.

[0250] In one implementation, the acquisition device 700 is further used for at least one of the following:

[0251] Sending a second high-layer signaling to the terminal, wherein the high-layer signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part;

[0252] Sending a third high-layer signaling to the terminal, wherein the high-layer signaling is used to indicate that at least one port of the multiple reference signals associated with the reference signal configuration information is associated with the same target PMI part;

[0253] Sending a fourth high-layer signaling to the terminal, wherein the fourth high-layer signaling is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal;

[0254] Indication information sent by the terminal is received, wherein the indication information is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal.

[0255] In one implementation, the acquisition device 700 further includes a determination module, configured to:

[0256] For a target PMI, by default, two polarization directions are associated with the same target PMI part;

[0257] For a target PMI part, establishing an association relationship according to all ports of a reference signal associated with the target PMI part;

[0258] For a target PMI part, an association relationship is established according to the target PMI part being associated with a part of ports of a reference signal;

[0259] For a target PMI part, establishing an association relationship by associating a part of ports of each reference signal in a plurality of reference signals according to the target PMI part;

[0260] For a target PMI part, an association relationship is established according to all ports of multiple reference signals associated with the target PMI part.

[0261] In one implementation, the receiving module 702 receives the channel state information reported by the terminal, including at least one of the following:

[0262] receiving at least one target PMI part fed back by the terminal, and acquiring a target PMI according to the at least one target PMI part;

[0263] receiving the number of the target PMI part fed back by the terminal;

[0264] The number of target PMIs fed back by the terminal is received.

[0265] The channel state information acquisition device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the terminal in the method embodiment achieve the same technical effect. To avoid repetition, they will not be described here.

[0266] like Figure 8 As shown, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, the memory 802 stores a program or instruction that can be run on the processor 801, for example, when the communication device 800 is a terminal, the program or instruction is executed by the processor 801 to implement the above Figure 2 When the communication device 800 is a network side device, the program or instruction is executed by the processor 801 to implement the above Figure 5 The various steps of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0267] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 2 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Fig. 9 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0268] The terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and at least some of the components of a processor 910.

[0269] Those skilled in the art will appreciate that the terminal 900 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 910 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig. 9 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0270] It should be understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processing unit 9041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0271] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 901 can transmit the data to the processor 910 for processing; in addition, the RF unit 901 can send uplink data to the network side device. Generally, the RF unit 901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0272] The memory 909 can be used to store software programs or instructions and various data. The memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 909 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0273] The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 910.

[0274] The radio frequency unit 901 is used to obtain reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, the time slots or symbols associated with all ports are not exactly the same.

[0275] or,

[0276] The processor 910 is configured to acquire channel state information based on at least one reference signal associated with the reference signal configuration information.

[0277] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to Figure 2 The relevant descriptions of the method embodiments shown in the figure achieve the same or corresponding technical effects, and will not be repeated here to avoid repetition.

[0278] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 5 The steps of the method embodiment shown. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0279] Specifically, the embodiment of the present application also provides a network side device. Fig.10 As shown, the network side device 1000 includes: an antenna 101, a radio frequency device 102, a baseband device 103, a processor 104 and a memory 105. The antenna 101 is connected to the radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information through the antenna 101 and sends the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes the information to be sent and sends it to the radio frequency device 102. The radio frequency device 102 processes the received information and sends it out through the antenna 101.

[0280] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 103, which includes a baseband processor.

[0281] The baseband device 103 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.10 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 105 through a bus interface to call the program in the memory 105 to execute the network device operations shown in the above method embodiment.

[0282] The network side device may further include a network interface 106, which is, for example, a Common Public Radio Interface (CPRI).

[0283] Specifically, the network side device 1000 of the embodiment of the present application further includes: instructions or programs stored in the memory 105 and executable on the processor 104, and the processor 104 calls the instructions or programs in the memory 105 to execute Figure 5The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0284] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned channel state information acquisition method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0285] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0286] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned channel state information acquisition method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0287] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0288] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned xxx method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0289] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0290] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0291] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A method for acquiring channel state information, characterized in that: include: The terminal obtains reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not completely the same; The terminal acquires channel state information based on at least one reference signal associated with the reference signal configuration information.

2. The method according to claim 1, characterized in that The time slots or symbols associated with all ports are not completely the same, including at least one of the following: Each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal; Each of said all ports is associated with a different time slot or symbol; Each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal in the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups; All the ports are divided into a plurality of second port groups, and each second port group is associated with a different time slot or symbol.

3. The method according to claim 1, characterized in that The multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signals associated with each of the reference signal groups are used to obtain the channel state information.

4. The method according to claim 3, characterized in that The first number of reference signal groups associated with the reference signal configuration information is not less than the second number of reference signal groups fed back by the terminal.

5. The method according to claim 3, characterized in that: The method further comprises: The terminal feeds back at least one reference signal indication or at least one reference signal group indication, wherein the reference signal indication is used to instruct the terminal to select a reference signal for acquiring the channel state information, and the reference signal group indication is used to instruct the terminal to select a reference signal group for acquiring the channel state information.

6. The method according to claim 5, characterized in that The number of the reference signal indications or reference signal group indications is determined according to network high-layer signaling.

7. The method according to claim 1, characterized in that All ports of each of the reference signals are associated with the same polarization direction.

8. The method according to claim 1, characterized in that The terminal acquires channel state information based on at least one reference signal associated with the reference signal configuration information, including at least one of the following: Acquiring, by the terminal, the channel state information based on all ports of at least one reference signal associated with the reference signal configuration information; The terminal acquires the channel state information based on some ports of at least one reference signal associated with the reference signal configuration information; The terminal acquires the channel state information based on part of ports of each reference signal in a plurality of reference signals associated with the reference signal configuration information; The terminal acquires the channel state information based on all ports of multiple reference signals associated with the reference signal configuration information.

9. The method according to any one of claims 1 to 8, characterized in that: The channel state information includes at least one of the following: a target PMI, a target PMI strength, a channel quality indication CQI, a target PMI part, and a target PMI part strength; wherein the one target PMI is composed of at least one of the target PMI parts.

10. The method according to claim 9, characterized in that: The method further comprises at least one of the following: For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part; For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that multiple ports of a reference signal associated with the reference signal configuration information are associated with the same target PMI part; For a target PMI, the terminal determines, according to high-layer signaling or a default rule, that at least one port of a plurality of reference signals associated with the reference signal configuration information is associated with the same target PMI part; For one target PMI, the terminal associates the same target PMI part with two polarization directions by default.

11. The method according to claim 9 or 10, characterized in that: The method further comprises one of the following: The terminal determines the number of target PMIs or the number of target PMI parts fed back according to the high-layer signaling; The terminal determines the number of target PMIs or the number of target PMI parts to be fed back and indicates it to the network.

12. The method according to claim 11, characterized in that After the terminal acquires channel state information based on at least one reference signal associated with the reference signal configuration information, the method further includes: The terminal feeds back at least one target PMI part, wherein the at least one target PMI part is used to obtain a target PMI.

13. The method according to claim 12, characterized in that When the terminal feedback is greater than a target PMI part, it includes at least one of the following: For each reference signal associated with the reference signal configuration information, the terminal feeds back a target PMI part with different numbers; For a plurality of port groups of a reference signal associated with the reference signal configuration information, the terminal feeds back target PMI parts of different quantities, wherein each port group is associated with at least one port; For multiple port groups of multiple reference signals associated with the reference signal configuration information, the terminal feeds back target PMI parts of different quantities, wherein each port group is associated with multiple reference signals; For multiple reference signal groups of multiple reference signals associated with the reference signal configuration information, the terminal feeds back target PMI parts with different numbers, wherein each reference signal group is associated with multiple reference signals.

14. A method for acquiring channel state information, characterized in that: include: The network side device sends reference signal configuration information to the terminal, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not completely the same; receiving channel state information reported by the terminal.

15. The method according to claim 14, characterized in that The time slots or symbols associated with all ports are not completely the same, including at least one of the following: Each port associated with a first reference signal is associated with a different time slot or symbol, wherein the first reference signal is one of the at least one reference signal; Each of said all ports is associated with a different time slot or symbol; Each first port group associated with the second reference signal is associated with a different time slot or symbol, the second reference signal is one reference signal in the at least one reference signal, and the multiple ports associated with the second reference signal are divided into multiple first port groups; All the ports are divided into a plurality of second port groups, and each second port group is associated with a different time slot or symbol.

16. The method according to claim 14, characterized in that Before receiving the channel state information reported by the terminal, the method further includes: The network side device sends network signaling to the terminal, wherein the network signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are divided into multiple reference signal groups, each of the reference signal groups is associated with at least one reference signal, and the reference signal associated with each reference signal group is used to obtain the channel state information.

17. The method according to any one of claims 14 to 16, characterized in that: After the network side device sends the network signaling to the terminal, the method further includes: The network side device obtains at least one reference signal indication or at least one reference signal group indication fed back by the terminal, wherein the reference signal indication is used to instruct the terminal to select a reference signal for obtaining the channel state information, and the reference signal group indication is used to instruct the terminal to select a reference signal group for obtaining the channel state information.

18. The method according to claim 17, characterized in that Before the network side device obtains at least one reference signal indication or at least one reference signal group indication fed back by the terminal, the method further includes: The network side device sends a first high-layer signaling to the terminal, wherein the first high-layer signaling is used to indicate the number of reference signal indications fed back by the terminal or the number of reference signal group indications fed back by the terminal.

19. The method according to any one of claims 14 to 18, characterized in that In case that the channel state information includes a target PMI, the one target PMI is composed of at least one target PMI part.

20. The method according to claim 19, characterized in that Before receiving the channel state information reported by the terminal, the method further includes at least one of the following: The network side device sends a second high-layer signaling to the terminal, wherein the third high-layer signaling is used to indicate that multiple reference signals associated with the reference signal configuration information are associated with the same target PMI part; The network side device sends a third high-layer signaling to the terminal, wherein the third high-layer signaling is used to indicate that at least one port of multiple reference signals associated with the reference signal configuration information is associated with the same target PMI part; The network side device sends a fourth high-layer signaling to the terminal, wherein the fourth high-layer signaling is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal; The network side device receives indication information sent by the terminal, wherein the indication information is used to indicate the number of target PMIs or the number of target PMI parts fed back by the terminal.

21. The method according to claim 19, characterized in that The method further comprises at least one of the following: For one target PMI, the network side device associates two polarization directions with the same target PMI part by default; For a target PMI part, the network side device establishes an association relationship according to all ports of a reference signal associated with the target PMI part; For a target PMI part, the network side device establishes an association relationship according to the target PMI part and associating a part of ports of a reference signal; For a target PMI part, the network side device establishes an association relationship according to some ports of each reference signal in the plurality of reference signals associated with the target PMI part; For a target PMI part, the network side device establishes an association relationship according to all ports of multiple reference signals associated with the target PMI part.

22. The method according to claim 21, characterized in that The receiving the channel state information reported by the terminal includes at least one of the following: receiving at least one target PMI part fed back by the terminal, and acquiring a target PMI according to the at least one target PMI part; receiving the number of the target PMI part fed back by the terminal; The number of target PMIs fed back by the terminal is received.

23. A device for acquiring channel state information, characterized in that: include: A first acquisition module is configured to acquire reference signal configuration information, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not completely the same; The second acquisition module is used to acquire channel state information based on at least one reference signal associated with the reference signal configuration information.

24. A device for acquiring channel state information, characterized in that: A first sending module, configured to send reference signal configuration information to a terminal, wherein the reference signal configuration information is associated with at least one reference signal, the number of ports associated with each reference signal is greater than or equal to 1, and among all ports of all reference signals associated with the reference signal configuration information, time slots or symbols associated with all ports are not completely the same; The receiving module is used to receive the channel state information reported by the terminal.

25. A terminal, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for acquiring channel state information as described in any one of claims 1 to 14 are implemented.

26. A network side device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for obtaining channel state information as described in any one of claims 15 to 22 are implemented.

27. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the method for obtaining the channel state information as described in any one of claims 1-13, or implements the steps of the method for obtaining the channel state information as described in any one of claims 14 to 22.

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