Method for determining precoding restriction information, terminal, and network side device

Abstract

The present application relates to the technical field of communications, and discloses a method for determining precoding restriction information, a terminal, and a network side device. The method for determining precoding restriction information in embodiments of the present application comprises: a terminal determines first precoding restriction information on the basis of at least one of the following: first information, second information, and third information; wherein the first information is used for indicating a plurality of pieces of precoding restriction information; the second information is used for indicating first association relationship information between a first parameter and a base vector, and the first parameter comprises one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP combination, and a cell; and the third information is used for indicating transmission direction configuration information of a network side device; the terminal determines channel state information on the basis of the first precoding restriction information.

Description

Methods for determining precoding restriction information, terminals and network-side devices

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411706593.3, filed on November 26, 2024, entitled “Method for Determining Precoded Restriction Information, Terminal and Network Side Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a method for determining precoding restriction information, a terminal, and a network-side device. Background Technology

[0004] In related technologies, network-side devices can configure precoding restriction information, such as codebook subset restriction (CBSR), to restrict the use of one or more Discrete Fourier Transform (DFT) bases in order to avoid causing significant interference to other cells / transmit / receive points (TRPs) or other networks (such as non-terrestrial networks (NTNs) or unmanned aerial vehicle (UAV) networks).

[0005] However, the above configuration of precoding constraint information does not consider the situation of multiple network nodes cooperating to serve the terminal, such as TRP cooperative clusters. This will lead to inaccurate channel state information obtained by the terminal. For example, regardless of whether TRP1 and TRP2 are cooperating in the same cooperative cluster, they will all indicate the same precoding constraint information, such as setting the bit of the precoding constraint information corresponding to the interference DFT base of TRP1 to a certain coverage area of ​​TRP2 to zero. However, when TRP1 and TRP2 are cooperating in the same cooperative cluster, the downlink interference between TRPs becomes the coherent superposition of signals during cooperative transmission, and it is not necessary to restrict the use of the corresponding DFT base. Therefore, it is necessary to redesign the configuration method of precoding constraint information. Summary of the Invention

[0006] This application provides a method for determining precoding constraint information, a terminal, and a network-side device, which can solve the problem that the channel state information obtained by the terminal is inaccurate due to unreasonable configuration of precoding constraint information.

[0007] In a first aspect, a method for determining precoding constraint information is provided, comprising: a terminal determining first precoding constraint information based on at least one of the following: first information, second information, and third information; wherein the first information is used to indicate multiple precoding constraint information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of network-side equipment; and the terminal determining channel state information based on the first precoding constraint information.

[0008] Secondly, a method for determining precoding restriction information is provided, comprising: a network-side device sending fifth information, the fifth information being used to indicate first precoding restriction information, the fifth information being at least one of the following: first information, second information, and third information; wherein, the first information is used to indicate multiple precoding restriction information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; and the third information is used to indicate transmission direction configuration information of the network-side device.

[0009] Thirdly, an apparatus for determining precoding constraint information is provided, comprising: a processing module, configured to determine first precoding constraint information based on at least one of the following: first information, second information, and third information; wherein the first information is used to indicate multiple precoding constraint information; the second information is used to indicate a first correlation relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of network-side equipment; the processing module is further configured to determine channel state information based on the first precoding constraint information.

[0010] Fourthly, a device for determining precoding restriction information is provided, comprising: a communication module for transmitting fifth information, the fifth information being used to indicate first precoding restriction information, the fifth information being at least one of the following: first information, second information, and third information; wherein, the first information is used to indicate multiple precoding restriction information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of network-side equipment.

[0011] Fifthly, an apparatus for determining precoded restriction information is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0012] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0013] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to determine first precoding constraint information based on at least one of the following: first information, second information, and third information; wherein the first information is configured to indicate multiple precoding constraint information; the second information is configured to indicate first association information between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is configured to indicate transmission direction configuration information of network-side equipment; and channel state information is determined based on the first precoding constraint information.

[0014] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0015] A ninth aspect provides a network-side device, including a processor and a communication interface, wherein the communication interface is used to transmit fifth information, the fifth information being used to indicate first precoding restriction information, the fifth information being at least one of the following: first information, second information, and third information; wherein the first information is used to indicate multiple precoding restriction information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of the network-side device.

[0016] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0017] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0018] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0019] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and 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.

[0020] In this embodiment, the terminal determines first precoding constraint information based on at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information, the second information indicates a first correlation relationship between a first parameter and a basis vector, and the third information indicates transmission direction configuration information of the network-side device. The terminal determines channel state information based on the first precoding constraint information. This embodiment is beneficial for configuring reasonable precoding constraint information for the terminal in scenarios such as TRP cooperative clusters where multiple network nodes cooperate to serve the terminal, improving the accuracy of the channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling. Attached Figure Description

[0021] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of this application;

[0022] Figure 2 is a schematic flowchart of a method for determining precoding restriction information according to an embodiment of this application;

[0023] Figure 3 is a schematic diagram illustrating the specific application of precoding restriction information according to an embodiment of this application;

[0024] Figure 4 is a schematic diagram illustrating the specific application of precoding restriction information according to an embodiment of this application;

[0025] Figure 5 is a schematic diagram illustrating the specific application of precoding restriction information according to an embodiment of this application;

[0026] Figure 6 is a schematic diagram illustrating the specific application of precoding restriction information according to an embodiment of this application;

[0027] Figure 7 is a schematic diagram illustrating the specific application of precoding restriction information according to an embodiment of this application;

[0028] Figure 8 is a schematic flowchart of a method for determining precoding restriction information according to an embodiment of this application;

[0029] Figure 9 is a schematic diagram of the structure of a device for determining precoded restriction information according to an embodiment of this application;

[0030] Figure 10 is a schematic diagram of the structure of a device for determining precoded restriction information according to an embodiment of this application;

[0031] Figure 11 is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0032] Figure 12 is a schematic diagram of the structure of a terminal according to an embodiment of this application;

[0033] Figure 13 is a schematic diagram of the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0037] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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 this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0038] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. Furthermore, terminal 11 can be any of the terminals described above, or it can be a chip within a terminal, such as a modem chip, a system-on-chip (SoC), etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 can include access network equipment or core network equipment, wherein access network equipment can also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment can include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments in this application only use base stations in NR systems as examples for description and do not limit the specific type of base station.

[0039] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. The core network functions include: BSF (Block Network Function), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0040] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0041] The method for determining precoding restriction information provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0042] As shown in Figure 2, this application embodiment provides a method 200 for determining precoded restriction information. This method can be executed by a terminal, in other words, it can be executed by software or hardware installed on the terminal. The method includes the following steps.

[0043] S202: The terminal determines the first precoding restriction information based on at least one of the following: first information, second information, and third information.

[0044] The first information is used to indicate multiple precoding restriction information, for example, the first information directly indicates multiple first precoding restriction information, or the first information indicates common precoding restriction information and multiple dedicated precoding restriction information; the second information is used to indicate the first association relationship information between the first parameter and the base vector, the first parameter including one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, cell; the third information is used to indicate the transmission direction configuration information of the network side device.

[0045] The first precoding restriction information in various embodiments of this application can be a bit sequence, such as a Codebook Subset Restriction (CBSR) sequence in NR. The length of the CBSR sequence can be N1O1N2O2. Except for special configurations, one bit of the CBSR sequence is associated with one of the N1O1N2O2 basis vectors, v. l,m When a bit in the CBSR sequence is set to 0, all precoders associated with its base vector are not fed back. This can be understood as the terminal not needing to measure the corresponding precoder. In some embodiments, each number in the first precoding constraint information can also be represented by multiple bits. For example, each number in the CBSR can also be represented by multiple bits. For instance, in the Type II codebook, 00 and 11 can represent values ​​of 0 and 1, respectively.

[0046] In one embodiment, the network-side device can indicate multiple possible first precoding constraint information, such as multiple CBSR sequences, through the first information; alternatively, the network-side device can indicate common precoding constraint information and dedicated precoding constraint information corresponding to each of the multiple TRP combinations through the first information. The terminal obtains the first precoding constraint information corresponding to each TRP combination based on the common precoding constraint information and the dedicated precoding constraint information corresponding to each TRP combination. Subsequently, the terminal can calculate a Channel State Information (CSI) based on each first precoding constraint information and report the obtained multiple CSI information; alternatively, the terminal can determine the actual required first precoding constraint information according to a certain rule, calculate the CSI, and report it.

[0047] The common precoding constraint information in various embodiments of this application can be used to indicate beam constraints that are not affected by the TRP selection result. For example, beam constraints that interfere with TRPs outside the TRP set, or beam constraints that apply to Non-Coherent Joint Transmission (NCJT) TRPs, or beam constraints that apply to other networks such as Non-Terrestrial Networks (NTN) and high-altitude platforms. Alternatively, the common precoding constraint information can also serve as a basic precoding constraint information, and the terminal determines the first precoding constraint information corresponding to each TRP combination based on the common precoding constraint information and other information (such as second information and third information).

[0048] Common precoding constraint information can refer to the common precoding constraint information used to determine the first precoding constraint information corresponding to each TRP combination; that is, the common precoding constraint information is common to each TRP combination. The common precoding constraint information can also be understood as reference precoding constraint information, meaning that the common precoding constraint information is referenced when determining the first precoding constraint information corresponding to each TRP combination. The common precoding constraint information can be network-configured or protocol-defined.

[0049] It is understandable that the CBSR sequence configured by the network-side device in related technologies does not take into account the situation of multiple network node cooperative service terminals such as TRP cooperative clusters, which will lead to inaccurate channel state information obtained by the terminal. In this embodiment, the network-side device can configure multiple precoding restriction information to take into account the situation of multiple network node cooperative service terminals such as TRP cooperative clusters, which is beneficial for the terminal to obtain accurate channel state information.

[0050] In one embodiment, the network-side device can indicate a first association relationship between the first parameter and the base vector through second information, wherein every N bits in the first precoding restriction information can be associated with a base vector, where N is a positive integer, such as N = 1, 2, 3, etc. Thus, the terminal can determine the first precoding restriction information based on the second information. The first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, cell.

[0051] In one embodiment, the terminal can determine the first precoding restriction information based on the basic precoding restriction information and the second information. The basic precoding restriction information can be the public precoding restriction information, or it can be indicated by a network-side device.

[0052] The TRP mentioned in the various embodiments of this application can also be a specific signal-associated TRP or a set of TRPs, or a TRP or a set of TRPs associated with a certain type or group of reference signals. The TRP can also be generalized to a repeater / TAG / cell (e.g., NTN, small cell) / IAB / beam / QCL assumption / TCI state, or other signal-associated transmission units for a specific purpose. A TRP can also correspond to a carrier / carrier group, an SSB / SSB group, a signal / signal resource, a signal group / signal resource set, a port / group of ports, a BWP / BWP group, a frequency resource / frequency resource group, or a certain transmission mode. Accordingly, in the various embodiments of this application, these concepts can be interchanged.

[0053] In one embodiment, the network-side device can indicate the transmission direction configuration information of the network-side device through third information, so that the terminal can determine the first precoding restriction information based on the third information.

[0054] In one embodiment, the terminal can determine the first precoding restriction information based on the basic precoding restriction information and the third information. The basic precoding restriction information can be the public precoding restriction information, or it can be indicated by a network-side device.

[0055] S204: The terminal determines the channel state information based on the first precoding restriction information.

[0056] In one embodiment, the first precoding restriction information is determined based on at least two of the first information, the second information, and the third information, and the terminal determines the channel state information based on the first precoding restriction information by: the terminal determining the channel state information based on the at least two types of information and the first precoding restriction information.

[0057] The method for determining precoding constraint information provided in this application embodiment involves a terminal determining first precoding constraint information based on at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information, the second information indicates a first correlation relationship between a first parameter and a base vector, and the third information indicates transmission direction configuration information of the network-side device. The terminal determines channel state information based on the first precoding constraint information. This application embodiment is beneficial for configuring reasonable precoding constraint information for the terminal in scenarios such as TRP cooperative clusters and other multi-network node cooperative service terminals, improving the accuracy of the channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling.

[0058] The following will describe, in conjunction with several embodiments, how the terminal determines the first precoding restriction information based on the first information, the second information, and the third information.

[0059] Case 1

[0060] Case 1 mainly introduces how the terminal determines the first precoding restriction information based on the first information.

[0061] In scenario 1, the network-side device directly configures all possible Coherent Joint Transmission (CJT) combinations and corresponding precoding constraint information. The terminal can select one of the CJT combinations to calculate and report channel state information; alternatively, the terminal calculates the corresponding channel state information based on the first precoding constraint information of each CJT combination and reports all channel state information. The CJT combinations in various embodiments of this application can be TRP combinations.

[0062] In one embodiment, the first information is used to indicate the first precoding constraint information corresponding to the TRP combination. For example, the first information is used to indicate one or more TRP combinations and the first precoding constraint information corresponding to each TRP combination. Each TRP combination may contain one or more TRPs, or one or more TRP groups. It is understood that the TRP combination may also represent a cooperative resource set, which may contain one or more downlink signaling resources, or one or more downlink signaling resource sets.

[0063] The TRP combination in various embodiments of this application can be a collection of one or more TRPs, which can be understood as a TRP group / TRP cluster / TRP set; optionally, this TRP combination may contain some other predefined TRP groups, such as TRP combination 1 containing TRP group 1 and {TRP1, TRP2}.

[0064] In one embodiment, the first information is used to indicate common precoding constraint information and dedicated precoding constraint information corresponding to TRP combinations. The dedicated precoding constraint information represents the precoding constraint information associated with each TRP combination, such as TRP group-Specific CBSR, and can be used to determine the first precoding constraint information using a differential form. The first precoding constraint information is obtained based on the common precoding constraint information and the dedicated precoding constraint information.

[0065] In this embodiment, for example, the first information is used to indicate a common precoding constraint information, as well as one or more TRP combinations and a dedicated precoding constraint information corresponding to each TRP combination.

[0066] In this embodiment, when both common precoding restriction information and dedicated precoding restriction information are configured, for any TRP combination, the first precoding restriction information corresponding to the TRP combination can be obtained by combining the common precoding restriction information and the dedicated precoding restriction information corresponding to the TRP combination.

[0067] For example, if the common precoding restriction information indicated by the network-side device is 0011 0011, and the special precoding restriction information corresponding to TRP combination #1 is represented as the difference information 0000 0100 from the common precoding restriction information, then the first precoding restriction information determined by TRP combination #1 is the superposition of the two items 0011 0111.

[0068] For example, if the common precoding restriction information indicated by the network-side device is 0011 0011, and the private precoding restriction information corresponding to TRP combination #2 indicates that the 5th bit is 1, then the first precoding restriction information determined by TRP combination #2 is based on the common precoding restriction information, using the bit sequence in the private precoding restriction information to replace the corresponding bit in the common precoding restriction information, resulting in 0011 1011.

[0069] For example, the common precoding restriction information indicated by the network-side device is the first 4 bits 0011, and the dedicated precoding restriction information corresponding to each TRP combination indicates the last 4 bits. Among them, the dedicated precoding restriction information corresponding to TRP combination #1 is 0111, and the dedicated precoding restriction information corresponding to TRP combination #2 is 1011. Then, through combination, the first precoding restriction information corresponding to TRP combination #1 and TRP combination #2 are 0011 0111 and 0011 1011, respectively.

[0070] In one embodiment, the first information may be used to indicate public precoding restriction information, without needing to indicate dedicated precoding restriction information. In this case, the public precoding restriction information includes all possible first precoding restriction information.

[0071] In one embodiment, determining the first precoding constraint information based on the first information includes one of the following:

[0072] 1) Determine a first TRP combination from the TRP combinations indicated by the first information; determine the first precoding restriction information corresponding to the first TRP combination.

[0073] In this embodiment, the terminal can determine channel state information based on the first precoding restriction information and the first TRP combination. For example, the terminal determines the first TRP combination from the TRP combinations indicated by the first information according to the instructions of the network-side device or predefined rules, and the terminal determines the first precoding restriction information as the precoding restriction information corresponding to the first TRP combination.

[0074] 2) Determine a first TRP combination set from the TRP combinations indicated by the first information, wherein the first TRP combination set contains some or all of the TRP combinations indicated by the first information; determine the first precoding restriction information corresponding to each TRP combination in the first TRP combination set.

[0075] In this embodiment, the terminal can determine the channel state information corresponding to each TRP combination based on each TRP combination in the first TRP combination set. For example, the terminal determines the first TRP combination set from the TRP combinations indicated by the first information according to the instructions of the network-side device or predefined rules. The first TRP combination set contains some or all of the TRP combinations indicated by the first information. The terminal determines the first precoding restriction information to be the precoding restriction information corresponding to all TRP combinations in the first TRP combination set.

[0076] Considering that different TRP combinations may correspond to different precoding constraint information, which may affect the result of channel state information calculation, in this embodiment, the network-side device configures the precoding constraint information corresponding to multiple / all / all available Coherent Joint Transmission (CJT) combinations to the terminal. Here, the CJT combination can be understood as the TRP combination. The terminal selects a CJT combination and uses the corresponding precoding constraint information to calculate the channel state information, thereby improving the accuracy of the channel state information.

[0077] In one embodiment, the method further includes: the terminal receiving CSI reported configuration information, the CSI reported configuration information including the first information. In this embodiment, the network-side device indicates the first information to the terminal through the CSI reported configuration information.

[0078] The CSI reported configuration information includes one or more sub-configurations, each of which includes the first precoding restriction information corresponding to a TRP combination, as detailed in the description of Embodiment 1 below.

[0079] In this embodiment, the first information can support the application of sub-configuration configuration methods in Network Energy Saving (NES) to MTRP scenarios; furthermore, the terminal can select only one or more sub-configurations to report the corresponding channel status information.

[0080] Case 2

[0081] Case 2 mainly describes how the terminal determines the first precoding restriction information based on the second information.

[0082] In scenario 2, the network-side device can configure a basic precoding constraint information, such as the common precoding constraint information mentioned in scenario 1. This common precoding constraint information may be, for example, a common CBSR. At the same time, it indicates the first association information between the first parameter and the base vector. The terminal determines the first precoding constraint information corresponding to all possible / selected CJT combinations based on the above first association information.

[0083] The first parameter includes one of the following: downlink signal resources, downlink signal resource set, TRP, TRP combination, cell. The downlink signal resources are, for example, resources corresponding to signals such as CSI-RS and DMRS; the basis vector is, for example, DFT or other forms of spatial-domain basis (SD basis).

[0084] In one embodiment, the second information includes at least one of the following:

[0085] 1) A first set, wherein each element in the first set is used to indicate the first parameter and the basis vector or group of basis vectors associated with the first parameter.

[0086] For example, the first parameter is a downlink signal resource, and each cell in the first set is used to indicate the downlink signal resource and its associated basis vector. Typically, the downlink signal resource can be represented by an index of the downlink signal resource, and the basis vector can be represented by an index of the basis vector. That is, each cell in the first set is used to indicate the index of the downlink signal resource and the index of its associated basis vector, for example (CSI-RS resource#1, basis vector v1).

[0087] For example, the first parameter is a downlink signal resource set, and each cell in the first set can be a downlink signal resource set and its associated basis vector. For example, each cell in the first set can be an index of the downlink signal resource set and its associated basis vector, such as (CSI-RS resource set#1, basis vector v1).

[0088] Optionally, each cell in the first set may also be a downlink signal resource and a set of basis vectors associated with it. For example, each cell in the first set may also be an index of a downlink signal resource and an index of a set of basis vectors associated with it, such as (CSI-RS resource#1, basis vectors {v1,v2,v4}).

[0089] Optionally, each cell in the first set may also be a downlink signal resource set and its associated basis vector. For example, each cell in the first set may also be an index of the downlink signal resource set and its associated basis vector, such as (CSI-RS resource set#1, basis vectors {v1,v2,v4}).

[0090] Optionally, the downlink signal resources mentioned above can also be TRPs, and the downlink signal resource set can also be a TRP group / cell.

[0091] 2) A first sequence, wherein each unit in the first sequence is used to indicate the basis vector, for example, to indicate the index of the basis vector.

[0092] The multiple units in the first sequence are arranged in a first order, which includes at least one of the following: the order of the indices of the first parameter, the order of the elements in the first parameter combination, and the order of the elements in the second parameter combination. The elements in the first parameter combination include cells, downlink signal resource sets, and downlink signal resources. The elements in the second parameter combination include cells, TRP combinations, and TRP.

[0093] For example, the first order includes at least one of the following: the downlink signal resource index associated with the base vector from smallest to largest, the downlink signal resource set / resource group index from smallest to largest, the TRP index from smallest to largest, the TRP group index from smallest to largest, the cell identifier from smallest to largest, the order of the downlink signal resource / downlink signal resource set / TRP / TRP group / cell indexes in the second sequence, the order of cell-downlink signal resource set-downlink signal resource, the order of downlink signal resource-downlink signal resource set-cell, the order of cell-TRP group-TRP, the order of TRP-TRP group-cell, and a certain predefined order; it can be understood that the above "from smallest to largest" order can also be replaced by the "from largest to smallest" order.

[0094] 3) A second sequence, wherein each unit in the second sequence is used to indicate the first parameter, for example, each unit in the second sequence is used to indicate an index of downlink signaling resource / downlink signaling resource set / TRP / TRP group / cell.

[0095] The multiple units in the second sequence are arranged in a second order, which includes: the order of the indices of the basis vectors, for example, the order of the associated basis vector indices from smallest to largest, and the order of the basis vector indices in the first sequence.

[0096] 4) The first association information between the first parameter and the base vector.

[0097] For example, a table showing the relationship between some or all downlink signal resources / downlink signal resource sets / TRPs / TRP groups / cells and some or all base vectors / base vector sets.

[0098] For a detailed description of the second information, please refer to Example 2 below.

[0099] In one embodiment, determining the first precoding constraint information based on the second information includes: determining the first precoding constraint information based on the second information and the first configuration information. The first configuration information may be downlink signal resource configuration information, which may also include cooperative resource set configuration information, such as CSI-RS resource set configuration information in NR. Specifically, it may include the composition of the cooperative resource set, that is, which downlink signal resources or downlink signal resource sets are included in the cooperative resource set.

[0100] The first configuration information includes at least one of the following: cooperative resource set configuration information, configuration information of the first parameter; the cooperative resource set includes downlink signal resources or a set of downlink signal resources for cooperative transmission.

[0101] In one embodiment, determining the first precoding restriction information based on the second information and the first configuration information includes: determining a first cooperative resource set based on the first configuration information, wherein the first precoding restriction information is precoding restriction information associated with a first downlink signal resource in the first cooperative resource set, and performing one of the following.

[0102] 1) If the first cooperative resource set contains a second downlink signal resource, the parameter associated with the second downlink signal resource in the first precoding restriction information is not set to zero; wherein, the parameter associated with the second downlink signal resource or the second signal resource set is, for example, one or more basis vector coefficients or bits associated with the second signal resource or the second signal resource set.

[0103] 2) If the first cooperative resource set does not contain the second downlink signal resource, set the parameter associated with the second downlink signal resource in the first precoding restriction information to zero; wherein, the first parameter includes the second downlink signal resource. The parameter associated with the second downlink signal resource or the second signal resource set may be, for example, one or more basis vector coefficients or bits associated with the second signal resource or the second signal resource set.

[0104] In this embodiment, for example, the downlink signal resource set configured by the network-side device is CSI-RS{#1, #2, #3, #4}, indicating that the TRPs corresponding to these resources can be transmitted via CJT. The cooperative resource set determined by the terminal is CSI-RS{#1, #2}. The first precoding restriction information (denoted as the first CBSR, which corresponds to which base vectors can be selected from all base vectors) is assigned to CSI-RS#1 in the cooperative resource set. Then, CSI-RS#3 (corresponding to TRP3) can be the second downlink signal resource here. The base vectors corresponding to some bits in the first CBSR can be associated with CSI-RS#3, indicating that this base vector points to the area where TRP3 is interfered with.

[0105] For a detailed description of this embodiment, please refer to the descriptions of Embodiments 3 and 4 below.

[0106] In one embodiment, if the first cooperative resource set contains a third downlink signal resource, and the third downlink signal resource belongs to a third downlink signal resource set, then it is determined that the first cooperative resource set contains the third downlink signal resource set; wherein, the first parameter includes the third downlink signal resource or the third downlink signal resource set.

[0107] This embodiment can reduce configuration overhead. For example, if the terminal selects any one of the third downlink signal resources in the third downlink signal resource set, it means that the entire third downlink signal resource set has been selected. In this way, the network-side device only needs to configure the possible precoding restriction information according to the third downlink signal set, without having to consider the combination situation for each (per) resource, thus reducing configuration overhead.

[0108] For a detailed description of this embodiment, please refer to Embodiment 4 below.

[0109] Case 3

[0110] Case 3 mainly describes how the terminal determines the first precoding restriction information based on the third information.

[0111] In scenario 3, the network-side device can configure basic precoding constraint information, such as the common precoding constraint information mentioned in scenario 1; simultaneously, it indicates a second association, such as the association between TRP and base vector under different enhanced duplex (XDD) configurations / associated transmission directions; the terminal determines the first precoding constraint information corresponding to all possible / selected CJT combinations based on the aforementioned second association. In the various embodiments of this application, XDD, enhanced duplex mode, enhanced full duplex, enhanced full duplex mode, and Subband Full Duplex (SBFD) can represent a concept.

[0112] In one embodiment, the transmission direction configuration information includes at least one of the following:

[0113] 1) Transmission mode information, used to indicate transmission mode or transmission mode pattern, wherein the transmission mode includes at least one of the following: uplink transmission, downlink transmission, hybrid transmission, flexible transmission, and the transmission mode pattern is used to indicate the arrangement pattern of the transmission modes in each transmission cycle.

[0114] Mixed transmission refers to simultaneous uplink and downlink transmission. If uplink and downlink transmissions are performed on different frequency domain resources, the corresponding modes may be FDD or SBFD, depending on the granularity of the frequency domain resources. If uplink and downlink transmissions are performed on the same resources, the corresponding mode may be full-duplex transmission.

[0115] Among them, flexible transmission means that it can be further configured as any transmission mode.

[0116] The transmission mode includes at least one transmission pattern. Different transmission patterns within the same transmission mode correspond to different frequency domain resource configurations. For example, each transmission mode may include multiple transmission patterns, and different transmission patterns within the same transmission mode may correspond to different frequency domain resource configurations. Optionally, the transmission patterns in all transmission modes can be uniformly numbered and indexed, or each transmission mode can be individually numbered and indexed. For example, the transmission frequency domain resources include three subbands: subband1, subband2, and subband3. Hybrid transmission pattern1 indicates that subband1 and subband2 are deep (DL) and subband3 is ultra-low (UL), while hybrid transmission pattern2 indicates that subband1 is DL and subband2 and subband3 are UL.

[0117] Furthermore, the transmission mode information may also include a transmission mode pattern for each cycle, which represents the arrangement of transmission modes / transmission patterns within each transmission cycle. For example, the transmission mode pattern may refer to a TDD configuration, such as DDDUU; or, the transmission mode pattern may also be represented as an arrangement of arbitrary transmission pattern indices, such as DL-pattern1, Mix-pattern1, Mix-pattern4, Mix-pattern2, UL-pattern3.

[0118] 2) Uplink transmission time resource information, used to indicate that there are only time resources for uplink transmission.

[0119] It is understood that the time resources can be represented in time length units such as radio frames, subframes, time slots, and OFDM symbols.

[0120] 3) Downlink transmission time resource information, used to indicate time resources available only for downlink transmission.

[0121] 4) Flexible transmission time resource information, used to indicate time resources for which the transmission direction is not determined.

[0122] 5) Mixed transmission time resource information, used to indicate time resources including uplink and downlink transmissions.

[0123] 6) Frequency domain resource information for uplink transmission, used to indicate frequency domain resources that are only used for uplink transmission.

[0124] It is understood that the frequency domain resources can be represented by frequency domain measurement units such as carrier, subcarrier, band, subband, bandwidth part (BWP), frequency unit, and RB.

[0125] 7) Frequency domain resource information for downlink transmission, used to indicate frequency domain resources available only for uplink transmission.

[0126] 8) Frequency domain resource information for full-duplex transmission, used to indicate the frequency domain range for simultaneous uplink and downlink transmission;

[0127] In one embodiment, the third information further includes second association information, which includes at least one of the following:

[0128] 1) The association between the transmission direction configuration information and the base vector or base vector set. This represents the base vector / base vector set associated with the index of the downlink signal resource / downlink signal resource set / TRP / TRP group / cell under the transmission direction configuration information. The indices of the downlink signal resource / downlink signal resource set / TRP / TRP group / cell may be different for different transmission direction configuration information.

[0129] 2) The relationship between the transmission direction configuration information and the precoding restriction information. For example, the precoding restriction bit sequence when configuring the transmission direction.

[0130] 3) The relationship between the transmission direction configuration information and the cooperative resource set configuration information. For example, the composition of the cooperative resource set when specifying the transmission direction configuration information.

[0131] 4) The association between the transmission direction configuration information and the second information is used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; and a third association information corresponding to the transmission direction configuration information, wherein the third association information is the association information between the first parameter and the basis vector.

[0132] Wherein, each unit in the first set is used to indicate the first parameter and the basis vector associated with the first parameter; each unit in the first sequence is used to indicate the basis vector; each unit in the second sequence is used to indicate the first parameter; the first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, cell.

[0133] For information on the first set, the first sequence, and the second sequence, please refer to the introduction in the second information.

[0134] For details on the various possible forms of the second association information, please refer to the description in Example 5.

[0135] In one embodiment, determining the first precoding constraint information based on third information includes at least one of the following:

[0136] 1) Based on the second association information, determine the base vector or base vector set associated with the transmission direction configuration information, and determine the first precoding restriction information based on the base vector or base vector set.

[0137] 2) Based on the second association information, determine that the precoding restriction information associated with the transmission direction configuration information is the first precoding restriction information.

[0138] 3) Based on the second association information, determine the cooperative resource set configuration information associated with the transmission direction configuration information, and determine the first precoding restriction information based on the cooperative resource set configuration information. For details, please refer to the description of Embodiment Six below.

[0139] 4) Based on the second association information, determine the second information associated with the transmission direction configuration information, and determine the first precoding restriction information based on the second information. Specifically, the terminal determines the second information associated with the transmission direction configuration information according to the second association in the third information, and further determines the first precoding restriction information based on the second information associated with the transmission direction configuration information.

[0140] In one embodiment, determining the channel state information based on the first precoding constraint information includes: determining the channel state information based on the first precoding constraint information and a TRP combination; the TRP combination is determined based on the transmission direction configuration information. The first precoding constraint information may correspond to a specific TRP combination selected by the terminal from multiple TRP combinations, and the terminal needs to calculate the channel state information based on this selected TRP combination and the first precoding constraint information.

[0141] For situations 1, 2, and 3 above, the terminal can determine one or more channel state information based on the first precoding restriction information and feed back the one or more channel state information to the network-side device.

[0142] The channel state information includes at least one of the following: interference measurement results, channel matrix, channel quality indicator (CQI), rank indicator (RI), precoding matrix indicator (PMI), and interference or noise information.

[0143] The terminal determines one or more channel state information based on the first precoding restriction information, including at least one of the following:

[0144] 1) If the first precoding restriction information is determined based on the first information, then the terminal determines the corresponding channel state information based on the first TRP combination corresponding to the first precoding restriction information, or each TRP combination in the first TRP combination set, and reports it to the network side device.

[0145] 2) If the first precoding restriction information is determined based on the second information, then the terminal determines the corresponding channel state information based on the first cooperative resource set corresponding to the first precoding restriction information and reports it to the network-side device.

[0146] 3) If the first precoding restriction information is determined based on the third information, then the terminal determines the corresponding channel state information based on the transmission direction configuration information corresponding to the first precoding restriction information and reports it to the network-side device.

[0147] It is understood that if the first precoding restriction information is determined based on multiple determinations among the first information, the second information, and the third information, then the channel state information is determined by the above multiple methods. For details, please refer to the description of Embodiment 7 below.

[0148] For cases 1, 2, and 3 above, the method further includes: determining a first window based on fourth information or a second rule; performing a functional relationship operation on the interference measurement values ​​within the first window, such as averaging, to obtain the interference measurement result within the first window; wherein, determining the channel state information based on the first precoding constraint information includes: determining the channel state information within the first window based on the first precoding constraint information; the channel state information includes at least one of the following within the first window: interference measurement result, channel matrix, channel quality indicator, rank indicator, precoding matrix indicator, interference or noise information.

[0149] The terminal acquires interference measurement results by measuring and smoothing over the time periods corresponding to all deep channels (DLs) within a cycle, i.e., by performing functional relationship calculations to obtain the interference measurement results. However, if the TDD configurations of different TRPs are different, the interference environment within different DL slots will be different. This embodiment defines a first window, within which the TDD configuration of the MTRP remains unchanged, thus obtaining a more accurate smoothed interference value.

[0150] For details on how to determine the first window for interference measurement based on transmission direction configuration information, please refer to the description in Example 8 below.

[0151] In one embodiment, the fourth information is used to indicate at least one of the following for the first window: start time, end time, window duration or range, and repetition period. In this embodiment, the fourth information can be sent by a network-side device to indicate information about the first window to the terminal, including at least one of the first window's start time, end time, window duration / range, and repetition period.

[0152] In one embodiment, determining the first window based on the second rule includes: determining at least one transmission mode combination based on transmission direction configuration information, the at least one transmission mode combination including a first transmission mode combination; and determining the first window corresponding to the first transmission mode combination. The second rule is predefined by the protocol and includes: the terminal determining all possible transmission mode combinations based on the transmission direction configuration information in the third information, and for the first transmission mode combination, determining the first window corresponding to the first transmission mode combination.

[0153] Optionally, the first transmission mode combination is a combination of transmission modes corresponding to one or more first parameters, wherein the first parameter includes one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell. For example, the first transmission mode combination represents a combination of transmission modes corresponding to one or more downlink signaling resources / downlink signaling resource sets / TRPs / TRP groups / cells, such as {TRP1-DL, TRP2-UL, TRP3-DL}.

[0154] Optionally, the first transmission mode combination is associated with a second TRP combination or a second cooperative resource set; wherein, the first transmission mode combination is a transmission mode combination corresponding to one or more first parameters in the second TRP combination or the second cooperative resource set, and the first parameter includes one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, cell. For example, the first transmission mode combination being associated with a certain TRP combination or cooperative resource set indicates that the first transmission mode combination is a transmission mode combination corresponding to one or more downlink signaling resources / downlink signaling resource sets / TRPs / TRP groups / cells in the TRP combination or cooperative resource set.

[0155] To explain in detail the method for determining precoding restriction information provided in the embodiments of this application, the following will be described in conjunction with several specific embodiments.

[0156] Example 1

[0157] This embodiment mainly introduces how network-side devices configure precoding constraint information for different TRP combinations in MTRP based on the sub-config framework.

[0158] In this embodiment, the network side instructs the UE to report configuration information (CSI-ReportConfig information) via CSI, which includes a list of sub-configuration information. Each sub-configuration information includes the following information:

[0159] 1) CSI calculates the corresponding collaborative resource set information, such as the composition of the collaborative resource set, and instructs one or more CSI-RS resources to perform CJT transmission.

[0160] 2) The first precoding restriction information corresponding to one or more downlink signal resources in the cooperative resource set.

[0161] For example, the network configuration CSI-ReportConfig includes two sub-configurations, denoted as sub-config1 and sub-config2, where:

[0162] (1) Sub-config1 includes a collaborative resource set of {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3}, wherein the first precoding constraint information corresponding to each CSI-RS resource is: the CBSR sequence of CSI-RS resource#1 is 0010 1101, the CBSR sequence of CSI-RS resource#2 is 1011 1101, and the CBSR sequence of CSI-RS resource#3 is 1001 1101.

[0163] (2) Sub-config1 includes a collaborative resource set of {CSI-RS resource#1, CSI-RS resource#2}, wherein the first precoding constraint information (e.g., CBSR sequence) corresponding to each CSI-RS resource is: the CBSR sequence of CSI-RS resource#1 is 0011 1101, and the CBSR sequence of CSI-RS resource#2 is 1111 1101;

[0164] The UE obtains the corresponding first precoding restriction information based on the sub-config1 and sub-config2, calculates the CJT PMI information of the corresponding {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3} cooperative resource set and the CJT PMI information of the {CSI-RS resource#1, CSI-RS resource#2} cooperative resource set, and feeds it back to the network side.

[0165] This first embodiment extends the CSI feedback sub-config framework in NES to the MTRP scenario with minimal protocol changes, making it easy to implement. For each sub-config, the UE can feed back the corresponding CSI information.

[0166] Example 2

[0167] This embodiment mainly introduces the form of the second information.

[0168] In this embodiment, possible forms of the second information are given as examples, including at least one of the following:

[0169] 1. In some embodiments, the second information includes a first set, wherein each element in the first set may include at least one of the following forms:

[0170] 1) Downlink signal resources and their associated basis vectors. Typically, the downlink signal resources can be represented by the index of the downlink signal resources, and the basis vectors can be represented by the index of the basis vectors, i.e., the index of the downlink signal resources and the index of their associated basis vectors, for example (CSI-RS resource#1, basis vector v1).

[0171] 2) Downlink signal resource set and its associated basis vector. Typically, the downlink signal resource set can be represented by the index of the downlink signal resource set, and the basis vector can be represented by the index of the basis vector, i.e., the index of the downlink signal resource set and the index of its associated basis vector, for example (CSI-RS resource set#1, basis vector v1).

[0172] 3) TRP and its associated basis vectors. Typically, the TRP can be represented by the index of the TRP, and the basis vectors can be represented by the index of the basis vectors, that is, the index of the TRP and the index of its associated basis vectors, for example (TRP1, basis vector v1).

[0173] 4) TRP groups and their associated basis vectors. Typically, the TRP group can be represented by the index of the TRP group, and the basis vector can be represented by the index of the basis vector, that is, the index of the TRP group and the index of its associated basis vector, for example (TRP group#1, basis vector v1), or ({TRP1,TRP2}, basis vector v1).

[0174] 5) Cell identifier and its associated basis vector. Typically, the basis vector can be represented by the index of the basis vector, i.e., the index of the cell identifier and its associated basis vector, such as (PCI#1, basis vector v1) or (cell A, basis vector v1).

[0175] 6) Downlink signal resources and a set of basis vectors associated with them. Typically, the downlink signal resources can be represented by the index of the downlink signal resources, and the set of basis vectors can be represented by the index of the set of basis vectors, that is, the index of the downlink signal resources and the index of the set of basis vectors associated with them, for example (CSI-RS resource#1, basis vectors {v1,v2,v4}), or (CSI-RS resource#1, basis vector group #1).

[0176] 7) A set of downlink signal resources and a set of basis vectors associated with it. Typically, the set of downlink signal resources can be represented by an index of the set of downlink signal resources, and the set of basis vectors can be represented by an index of the set of basis vectors, i.e., the index of the downlink signal resource set and the index of the set of basis vectors associated with it, for example (CSI-RS resource set#1, basis vectors {v1,v2,v4}), or (CSI-RS resource set#1, basis vector group #1).

[0177] 8) The TRP and its associated set of basis vectors. Typically, the TRP can be represented by the index of the TRP, and the set of basis vectors can be represented by the index of the set of basis vectors, i.e., the index of the TRP and the index of its associated set of basis vectors, for example, (TRP1, basis vectors {v1,v2,v4}), or (TRP1, basis vector group #1).

[0178] 9) A TRP group and its associated set of basis vectors. Typically, the TRP group can be represented by the index of the TRP group, and the set of basis vectors can be represented by the index of the set of basis vectors, that is, the index of the TRP group and the index of its associated set of basis vectors, for example (TRP group#1, basis vectors {v1,v2,v4}), or ({TRP1,TRP2}, basis vectors {v1,v2,v4}), or (TRP group#1, basis vector group #1), or ({TRP1,TRP2}, basis vector group #1).

[0179] 10) A cell identifier and a set of basis vectors associated with it. Typically, the set of basis vectors can be represented by the index of the set of basis vectors, i.e., the index of the cell identifier and the set of basis vectors associated with it, such as (PCI#1 / cell A, basis vectors {v1,v2,v4}) or (PCI#1 / cell A, basis vector group #1).

[0180] This embodiment indicates the second information through the first set, without requiring cooperative resource set information, and can more flexibly indicate the association between various forms of resources and basis vectors / basis vector sets.

[0181] 2. In some embodiments, the second information includes a first sequence, such as an index sequence of basis vectors, the first sequence being arranged in at least one of the following orders:

[0182] 1) Downlink signal resource indexes are set from smallest to largest. For example, in the cooperative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4}, CSI-RS resource#1 has a first sequence of basis vectors v1-v2-v4, indicating that CSI-RS resource#2 is associated with basis vector v1, CSI-RS resource#3 with basis vector v2, and CSI-RS resource#4 with basis vector v4. Alternatively, for example, if the downlink signal resource index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with downlink signal resource #n, i.e., the base vector associated with downlink signal resource #n. or basis vector group Furthermore, the index can start from 1 or from 0.

[0183] 2) Downlink signal resource indices are arranged from largest to smallest. For example, in the cooperative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4}, CSI-RS resource#1 has a first sequence of basis vectors v1-v2-v4, representing that CSI-RS resource#4 is associated with basis vector v1, CSI-RS resource#3 with basis vector v2, and CSI-RS resource#2 with basis vector v4. Alternatively, for example, if the downlink signal resource index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with downlink signal resource #(N-n+1), i.e., the base vector associated with downlink signal resource #(N-n+1). or basis vector group

[0184] 3) Downlink signal resource set / resource group indexes ascend from smallest to largest. For example, in the cooperative resource set {CSI-RS resource set#1, CSI-RS resource set#2, CSI-RS resource set#3}, CSI-RS resource set#1 has a first sequence of basis vectors {v1,v2}-{v4,v6}, indicating that CSI-RS resource set#2 is associated with basis vectors {v1,v2} and CSI-RS resource set#3 is associated with basis vectors {v4,v6}. Alternatively, for example, if the downlink signal resource set index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with downlink signal resource set #n, i.e., the base vector associated with downlink signal resource set #n. or basis vector group

[0185] 4) Downlink signal resource set / resource group indexes are from largest to smallest. For example, in the cooperative resource set {CSI-RS resource set#1, CSI-RS resource set#2, CSI-RS resource set#3}, CSI-RS resource set#1 has a first sequence of basis vectors {v1,v2}-{v4,v6}, indicating that CSI-RS resource set#3 is associated with basis vectors {v1,v2} and CSI-RS resource set#2 is associated with basis vectors {v4,v6}. Alternatively, for example, if the downlink signal resource set index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with downlink signal resource set #(N-n+1), i.e., the base vector associated with downlink signal resource set #(N-n+1). or basis vector group

[0186] 5) TRP indices ascend from smallest to largest. For example, in the TRP combination {TRP1, TRP2, TRP3, TRP4}, TRP1's first sequence is the base vector v1-v2-v4, indicating that TRP2 is associated with base vector v1, TRP3 with base vector v2, and TRP4 with base vector v4. Alternatively, for example, if the TRP index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the index of the basis vector to which TRP n is associated, i.e., the basis vector to which TRP n is associated. or basis vector group

[0187] 6) TRP indices are arranged from largest to smallest. For example, in the TRP combination {TRP1, TRP2, TRP3, TRP4}, TRP1's first sequence is the base vector v1-v2-v4, indicating that TRP4 is associated with base vector v1, TRP3 with base vector v2, and TRP2 with base vector v4. Alternatively, for example, if the TRP index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the index of the basis vector associated with TRP(N-n+1), that is, the basis vector associated with TRP(N-n+1). or basis vector group

[0188] 7) TRP group indices ascend from smallest to largest. For example, in the TRP combination {TRP group#1, TRP group#2, TRP group#3}, TRP group#1 has a first sequence of basis vectors v1-{v4,v6}, indicating that TRP group#2 is associated with basis vector v1 and TRP group#3 is associated with basis vectors {v4,v6}. Alternatively, for example, if the range of the TRP group index is 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This indicates the base vector index associated with TRP group #n, that is, the base vector associated with TRP group #n. or basis vector group

[0189] 8) TRP group indices are arranged from largest to smallest. For example, in the TRP combination {TRP group#1, TRP group#2, TRP group#3}, TRP group#1 has a first sequence of basis vectors v1-{v4,v6}, indicating that TRP group#3 is associated with basis vector v1 and TRP group#2 is associated with basis vectors {v4,v6}. Alternatively, for example, if the range of the TRP group index is 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with TRP group #(N-n+1), that is, the base vector associated with TRP group #(N-n+1). or basis vector group

[0190] 9) Cell identifiers are listed from smallest to largest. Cell identifiers can be PCI or cell ID. For example, in an inter-cell MTRP scenario, cell #1 in the cooperative cell combination {cell#1, cell#2, cell#3} has a first sequence of basis vectors v1-{v4,v6}, indicating that cell #2 is associated with basis vector v1 and cell #3 is associated with basis vectors {v4,v6}. Alternatively, if the cell identifier / index range is 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with cell #n, that is, the base vector associated with cell #n. or basis vector group

[0191] 10) Cell identifiers are listed from largest to smallest. Cell identifiers can be PCI or cell ID. For example, in an inter-cell MTRP scenario, cell #1 in the cooperative cell combination {cell#1, cell#2, cell#3} has a first sequence of basis vectors v1-{v4,v6}, indicating that cell #3 is associated with basis vector v1 and cell #2 with basis vectors {v4,v6}. Alternatively, if the cell identifier / index ranges from 1 to N, the first sequence is a sequence of length N, where the nth digit x... n This represents the base vector index associated with cell #(N-n+1), that is, cell #(N-n+1) is associated with the base vector. or basis vector group

[0192] 11) The arrangement order of cell-downlink signal resource set-downlink signal resource is as follows: the base vector associated with cell identifier comes first, followed by the base vector associated with downlink signal resource set, and finally the base vector associated with downlink signal resource. The cell identifier / downlink signal resource set / downlink signal resource associated base vector is arranged according to 9) or 10), 3) or 4), 1) or 2).

[0193] For example, in the collaborative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#6, CSI-RS resource set#5, cell#4}, CSI-RS resource#1 has a first sequence of basis vectors v1-v2-v4-v9, indicating that cell#4 is associated with basis vector v1, CSI-RS resource set#5 is associated with basis vector v2, CSI-RS resource#2 is associated with basis vector v4, and CSI-RS resource#6 is associated with basis vector v9.

[0194] 12) The arrangement order of cell-TRP group-TRP is as follows: the base vector associated with cell identifier comes first, followed by the base vector associated with TRP group, and finally the base vector associated with TRP. The base vectors associated with cell identifier / TRP group / TRP are arranged according to 9) or 10), 7) or 8), 5) or 6).

[0195] For example, in the TRP combination {TRP1,TRP2,TRP6,TRP group#5,cell#4}, TRP1 has a first sequence of basis vectors v1-v2-v4-v9, which means that cell#4 is associated with basis vector v1, TRP group#5 is associated with basis vector v2, TRP2 is associated with basis vector v4, and TRP6 is associated with basis vector v9.

[0196] In this embodiment, when a collaborative resource set is configured, only one sequence is needed to indicate the second information, which helps to save configuration overhead on the network side.

[0197] 3. In some embodiments, the second information includes a second sequence, such as a sequence of indices for downlink signaling resources / downlink signaling resource sets / TRPs / TRP groups / cells, the second sequence being arranged in at least one of the following orders:

[0198] 1) The associated base vector indices are arranged from smallest to largest. For example, the first index (representing the index of downlink signal resources / downlink signal resource sets / TRP / TRP groups / cells) ranges from 1 to N, the index of downlink signal resources / downlink signal resource sets / TRP / TRP groups / cells ranges from 1 to N, the base vector index ranges from 1 to M, and the second sequence is a sequence of length M, where the m-th digit y m This represents the first index associated with the basis vector #m; optionally, each number y... m It can be represented by a binary sequence of the same length, that is, the base vector #m is associated with the downlink signal resource / downlink signal resource set / TRP / TRP group / cell corresponding to the first index. Furthermore, the index can start from 1 or from 0.

[0199] For example, in the collaborative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4}, there are a total of 8 basis vectors v1 and v8. The second sequence is a permutation sequence of CSI-RS resource indices of length 8: 2-3-0-4-0-4-0-0. This means that basis vector v1 is associated with CSI-RS resource#2, basis vector v2 is associated with CSI-RS resource#3, basis vectors v4 and v6 are associated with CSI-RS resource#4, and the remaining basis vectors are not associated with CSI-RS resources.

[0200] 2) The associated base vector indices are arranged from largest to smallest. For example, the range of the first index is 1 to N, where the first index can represent the index of downlink signal resource / downlink signal resource set / TRP / TRP group / cell. The range of the base vector index is 1 to M. The second sequence is a sequence of length M, where the m-th digit y M-m+1 This indicates the first index associated with the base vector #(M-m+1), that is, the downlink signal resource / downlink signal resource set / TRP / TRP group / cell associated with the base vector #(M-m+1). Optionally, the m-th digit y in the second sequence M-m+1 It can also be represented by a binary sequence; furthermore, the index can start from 1 or from 0.

[0201] For example, in the collaborative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4}, there are a total of 8 basis vectors v1 and v8. The second sequence is a permutation sequence of CSI-RS resource indices of length 8: 0-0-4-0-4-0-3-2. This means that basis vectors v4 and v6 are associated with CSI-RS resource#4, basis vector v2 is associated with CSI-RS resource#3, basis vector v1 is associated with CSI-RS resource#2, and the remaining basis vectors are not associated with CSI-RS resources.

[0202] In this embodiment, when a collaborative resource set is configured, only one sequence is needed to indicate the second information, saving the configuration overhead of the network-side device.

[0203] 4. In some embodiments, the second information includes a first sequence and a second sequence, wherein elements with the same index in the first and second sequences are related to each other; for example, the first sequence is a base vector / base vector group sequence, and the second sequence is a sequence of indices for downlink signal resources / downlink signal resource sets / TRPs / TRP groups / cells. The first and second sequences have the same length, assuming that the length of each is K, where the k-th unit (e.g., base vector / base vector group) in the first sequence x k With the k-th unit in the second sequence (e.g., downlink signaling resource / downlink signaling resource set / TRP / TRP group / cell) y k Related.

[0204] For example, for CSI-RS resource #1, the first sequence is the basis vector v1-v2-v4-v9, and the second sequence is CSI-RS resource #2-CSI-RS resource #6-CSI-RS resource set #5-cell #4, which means that CSI-RS resource #2 is associated with the basis vector v1, CSI-RS resource #6 is associated with the basis vector v2, CSI-RS resource set #5 is associated with the basis vector v4, and cell #4 is associated with the basis vector v9.

[0205] In this embodiment, the second information is indicated by two sequences, eliminating the need for collaborative resource set information, and the format is uniform and more flexible.

[0206] 5. In some embodiments, the second information includes first association information between downlink signal resources and base vectors, such as an association table between some or all downlink signal resources / downlink signal resource sets / TRPs / TRP groups / cells and some or all base vectors / base vector sets.

[0207] 1) Taking CSI-RS resources as an example, the relationship table between the CSI-RS resources and the basis vectors / basis vector sets can be as shown in Table 1 below:

[0208] Table 1

[0209] 2) Taking the CSI-RS resource set as an example, the relationship table between the CSI-RS resource set and the basis vectors / basis vector sets can be as shown in Table 2 below:

[0210] Table 2

[0211] 3) Taking TRP as an example, the relationship table between TRP and basis vectors / basis vector sets can be as shown in Table 3 below:

[0212] Table 3

[0213] 4) Taking the TRP group as an example, the relationship table between the TRP group and the basis vector / basis vector set can be as shown in Table 4 below:

[0214] Table 4

[0215] 5) Taking a cell as an example, the relationship table between the cell (all TRPs) and the basis vector / base vector set can be as shown in Table 5 below:

[0216] Table 5

[0217] 6) It is understood that the table may include at least one of the following: downlink signaling resources / downlink signaling resource sets / TRPs / TRP groups / cells. For example, a table indicating the association between cooperative resource sets {CSI-RS resource#1, CSI-RS resource set#3, cell#2} and base vectors / base vector sets could be Table 6 below:

[0218] Table 6

[0219] In this embodiment, the second information is indicated in the form of an association information table, which can provide a unified indication for each collaborative resource set without requiring individual indication for each CSI-RS resource, thus saving indication signaling overhead.

[0220] Example 3

[0221] This embodiment mainly introduces a scheme for determining precoding constraint information based on TRP selection in MTRP scenarios. In this embodiment, the precoding constraint information is CBSR as an example.

[0222] In MTRP scenarios, consider scenarios where the network-side device configures the UE to independently select the corresponding CSI from the cooperative cluster feedback (e.g., in NR, if the network-side device does not configure the restrictedCMR-Selection parameter, the UE can select from the N in the CSI-RS resource set configuration indicated by the network side). trp Select any N CSI-RS resources from the given CSI-RS resources for CJT transmission, calculate and report the corresponding CSI.

[0223] In some embodiments, for example, the network side configures a cooperative resource set {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4} for the UE. It can be understood that each CSI-RS resource can correspond to a TRP. Therefore, the combination of TRPs configured by the network side for coherent joint transmission (CJT) for the UE is {TRP1, TRP2, TRP3, TRP4}. Assuming the number of CSI-RS ports is 8, parameters (N1, N2) = (4, 1), (O1, O2) = (4, 1), and the length of the CBSR sequence is N1O1N2O2 = 16, with each bit corresponding to a basis vector. Assuming the range of the basis vector is v1 □ v16 (it can be understood that in other embodiments, the range of the basis vector can also be v0 □ v15).

[0224] Taking CSI-RS resource #1 as an example, the CBSR sequence associated with CSI-RS resource #1 configured by the network is 0011 1111 0111 0101 (it can be understood that this sequence can be indicated according to existing protocol methods, or indicated by the first information, and other embodiments in this application can also be understood in this way). The second information sent by the network indicates that CSI-RS resource #2, CSI-RS resource #3, and CSI-RS resource #4 are respectively associated with basis vectors v2, v9, and v1. 15 The indication method for the second information can be any of the methods in Embodiment 2. The first and thirteenth bits of the CBSR sequence are fixed at 0 to avoid interference with communication systems outside the cooperative resource set configured on the network side.

[0225] The application scenario of this embodiment is shown in Figure 3.

[0226] Therefore, depending on the composition of the cooperative resource set selected by the UE, according to the first rule, the values ​​of the 2nd, 9th, and 15th bits of the CBSR sequence corresponding to CSI-RS resource#1 determined by the UE will also be different, including at least one of the cases shown in Table 7 below:

[0227] Table 7

[0228] Similarly, CSI-RS resource #2, CSI-RS resource #3, and CSI-RS resource #4 have similar configurations and methods for determining the associated CBSR sequences as CSI-RS resource #1, which will not be listed one by one here.

[0229] In this embodiment, the UE can determine the most suitable cooperative resource set / TRP cooperative combination based on the measurement results of the CSI-RS signal, and determine the corresponding CBSR sequence according to the selected cooperative resource set / TRP cooperative combination, thereby obtaining and feeding back the most accurate CSI information, such as PMI, to the network-side equipment, which is beneficial to improving the accuracy of network-side scheduling.

[0230] Example 4

[0231] This embodiment mainly introduces a scheme for determining precoding constraint information based on TRP group / cell selection in the MTRP scenario. In this embodiment, the precoding constraint information is taken as CBSR.

[0232] In MTRP scenarios, consider scenarios where the network-side device configures the UE to independently select the corresponding CSI from the cooperative cluster feedback. For example, in NR, if the network-side device does not configure the restrictedCMR-Selection parameter, the UE can select from the N parameter in the CSI-RS resource set configuration indicated by the network side. trp Select any N CSI-RS resources from the given CSI-RS resources for CJT transmission, calculate and report the corresponding CSI.

[0233] (1) In some embodiments, for example, the network side configures a cooperative resource set {CSI-RS resource set#1, CSI-RS resource set#2, CSI-RS resource set#3, CSI-RS resource set#4} for the UE. It can be understood that each CSI-RS resource set in the cooperative resource set can correspond to a TRP group, and each CSI-RS resource in the CSI-RS resource set can correspond to a TRP. Then, the TRP combination that the network side configures for the UE to perform coherent joint transmission (CJT) is {TRP group#1, TRP group#2, TRP group#3}. CSI-RS resource set #1 contains two CSI-RS resources, namely CSI-RS resource #1-1 and #1-2; CSI-RS resource set #2 contains CSI-RS resource #2-1 and #2-2; CSI-RS resource set #3 contains CSI-RS resources #3-1, #3-2, and #3-3; CSI-RS resource set #4 contains only CSI-RS resource #4-1. Optionally, the cooperative resource set can also directly include the CSI-RS resources in all these CSI-RS resource sets. It can be understood that by mapping the resource sets to TRP groups and TRPs, all TRPs in each TRP group can achieve high-level coordination, high-precision synchronization, and centralized control. That is, it can be considered that the TRPs within each TRP group can reduce interference through network-side scheduling algorithms, while different TRP groups cannot be centrally controlled or it is difficult to achieve mutual interference coordination solely through scheduling algorithms.

[0234] Assuming the number of CSI-RS ports is 8, the parameters (N1,N2) = (4,1) and (O1,O2) = (4,1), the length of the CBSR sequence is N1O1N2O2 = 16, and each bit corresponds to a basis vector. Assuming the range of the basis vector is v1□v16, it can be understood that in some other embodiments, the range of the basis vector can also be v0□v15.

[0235] Taking CSI-RS resource #1-1 in CSI-RS resource set #1 as an example, the CBSR sequence associated with CSI-RS resource #1-1 configured by the network is 0011 1111 0011 0101. It can be understood that this sequence can be indicated according to existing protocol methods or through the first information. Other embodiments in this application can also be understood in this way. The second information sent by the network indicates that CSI-RS resource set #2, CSI-RS resource set #3, and CSI-RS resource set #4 are respectively associated with basis vectors or basis vector sets v2, {v9, v... 10}、v 15 The indication method of the second information can be any of the methods in Embodiment 2.

[0236] It is worth noting that if the cooperative resource set determined by the UE includes any CSI-RS resource in a certain CSI-RS resource set, it can be said that the cooperative resource set includes that CSI-RS resource set. For example, the CBSR sequence of CSI-RS resource #1-1 corresponding to CSI-RS resource #2-1, CSI-RS resource #2-2, or both CSI-RS resource #2-1 and CSI-RS resource #2-2 is the same. In addition, in the CBSR sequence of CSI-RS resource #1-1, the 1st and 13th bits are fixed to 0 to avoid interference with communication systems outside the cooperative resource set configured on the network side.

[0237] The application scenario of this embodiment is shown in Figure 4.

[0238] Therefore, depending on the composition of the cooperative resource set selected by the UE, according to the first rule, the values ​​of the 2nd, 9th and 10th, and 15th bits of the CBSR sequence corresponding to CSI-RS resource#1 determined by the UE will also be different, including at least one of the following cases (see Table 8 below):

[0239] Table 8

[0240] Similarly, other CSI-RS resources have similar configurations and methods for determining the associated CBSR sequences as CSI-RS resource #1-1 in CSI-RS resource set #1, which will not be listed one by one here.

[0241] In this embodiment, the UE can determine the most suitable cooperative resource set / TRP cooperative combination based on the measurement results of the CSI-RS signal, and determine the CBSR sequence in units of CSI-RS resource set / TRP group according to the selected cooperative resource set / TRP cooperative combination, thereby obtaining and feeding back the most accurate CSI information (e.g., PMI) to the network-side equipment, which is beneficial to improve the accuracy of network-side scheduling. In addition, determining the CBSR sequence in units of CSI-RS resource set / TRP group can reduce the CBSR configuration overhead of the network side and reduce the complexity of network-side equipment and terminals.

[0242] (2) In some embodiments, such as the Inter-cell MTRP scenario, the network-side device of the UE's serving cell (e.g., the serving cell TRP) can indicate the configuration information of the candidate cell to the UE. During downlink data transmission, the TRPs of the serving cell and the candidate cells can serve the UE in the manner of MTRP based on the multi-DCI framework.

[0243] For example, the network side configures a cooperative resource set for the UE as {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3, CSI-RS resource#4, CSI-RS resource#5}, where CSI-RS resources#1, #2, and #3 belong to the serving cell and are associated with PCI#1 of the serving cell, and CSI-RS resources#4 and #5 belong to the candidate cell and are associated with the cell identifier Additional PCI#2 of the candidate cell. Considering determining the CBSR on a cell-by-cell basis and configuring it per CSI-RS resource, the UE's cooperative resource set can also be represented as {cell#1, cell#2}, where each cell corresponds to a set of CSI-RS resources in all cooperative resource sets associated with the PCI / cell ID, or it can correspond to a TRP group consisting of TRPs corresponding to these CSI-RS resources.

[0244] Assuming the CSI-RS port count is 8, parameters (N1, N2) = (4, 1), (O1, O2) = (4, 1), and the length of the CBSR sequence is N1O1N2O2 = 16, with each bit corresponding to a basis vector, and assuming the range of the basis vector is v1 □ v16. It is understood that in some other embodiments, the range of the basis vector can also be v0 □ v15.

[0245] Taking CSI-RS resource #1 in cell #1 as an example, the CBSR sequence associated with CSI-RS resource #1 configured by the network is 0111 1111 1111 0001. It can be understood that this sequence can be indicated according to existing protocol methods, or indicated by the first information. Other embodiments in this application can also be understood in this way. The second information sent by the network indicates the basis vector set {v} associated with candidate cell #2. 13 ,v 14 ,v 15 The indication method of the second information can be any of the methods in Embodiment 2.

[0246] It is worth noting that if the cooperative resource set determined by the UE includes any one of the CSI-RS resources in candidate cell #2, namely CSI-RS resource #4 or CSI-RS resource #5, it indicates that the cooperative resource set includes candidate cell #2. In other words, the CBSR sequence of CSI-RS resource #1 corresponding to CSI-RS resource #4, CSI-RS resource #5, or both CSI-RS resource #4 and CSI-RS resource #5, is the same for the UE. Furthermore, in the CBSR sequence of CSI-RS resource #1-1, the first bit is fixed to 0 to avoid interference with communication systems outside the cooperative resource set configured on the network side.

[0247] The application scenario of this embodiment is shown in Figure 5.

[0248] Therefore, depending on the composition of the cooperative resource set selected by the UE, according to the first rule, the values ​​of bits 13 to 15 of the CBSR sequence corresponding to CSI-RS resource#1 determined by the UE will also be different, including at least one of the cases shown in Table 9 below:

[0249] Table 9

[0250] Similarly, CSI-RS resource #2, CSI-RS resource #3, CSI-RS resource #4, and CSI-RS resource #5 have similar configurations and methods for determining the associated CBSR sequences as CSI-RS resource #1, which will not be listed one by one here.

[0251] In this embodiment, in the inter-cell MTRP scenario, the UE can determine the most suitable cooperative resource set / TRP cooperative combination among multiple cells based on the measurement results of the CSI-RS signal. These multiple cells include the serving cell and a candidate cell. Based on the selected cooperative resource set / TRP cooperative combination, the UE determines the CBSR sequence on a cell-by-cell basis, thereby obtaining and feeding back the most accurate CSI information, such as PMI, to the network-side equipment. This is beneficial for improving the accuracy of network-side scheduling. In addition, determining the CBSR sequence on a cell-by-cell basis can reduce the CBSR configuration overhead on the network side and reduce the complexity of network-side equipment and terminals.

[0252] Example 5

[0253] This embodiment mainly introduces the form of transmission direction configuration information and second association relationship.

[0254] In this embodiment, examples are given of possible forms of the second association information between transmission direction configuration information and base vector information, including at least one of the following:

[0255] (1) In some embodiments, the second association information represents the association between the index of the downlink signal resource / downlink signal resource set / TRP / TRP group / cell and the base vector / base vector set corresponding to the transmission direction configuration information, for example:

[0256] 1) The network side configures downlink signal resources CSI-RS resource#1 and CSI-RS resource#2 for the UE, corresponding to TRP1 and TRP2 respectively. The TDD configuration of TRP1 is DDDUU and the TDD configuration of TRP2 is DDUUU. Considering that TRP1 and TRP2 use the same frequency range, there are three transmission mode information: downlink transmission mode TRP1 DL+TRP2 DL, time domain positions are slot1 and slot2; hybrid transmission mode TRP1 DL+TRP2 UL, time domain position is slot3; and uplink transmission mode TRP1 UL+TRP2 UL, time domain positions are slot4 and slot5. The network side equipment for uplink transmission does not consider the configuration and determination of precoding restriction information.

[0257] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0258] For the downlink transmission mode (time domain positions are slot1 and slot2), the association between the downlink signal resources and the basis vector can be represented in the form of a first set as (CSI-RS resource#2, basis vector v2);

[0259] For the hybrid transmission mode (time domain location is slot3), the association between the downlink signal resources and the base vector can be represented in the form of a first set as (CSI-RS resource#2, base vector v4), which can indicate that the direction of base vector v4 causes interference to the uplink reception of TRP2.

[0260] 2) The network side configures downlink signal resources CSI-RS resource#1, CSI-RS resource#2, and CSI-RS resource#3 for the UE, corresponding to TRP1, TRP2, and TRP3 respectively. TRP1's TDD configuration is DDDDU, TRP2's TDD configuration is DDUUU, and TRP3's TDD configuration is DDDUU. Considering that TRP1, TRP2, and TRP3 use the same frequency range, there are three transmission mode information and four transmission patterns: downlink transmission mode (time domain positions are slot1 and slot2), hybrid transmission mode - pattern #1: TRP1 DL + TRP2 UL + TRP3 DL (time domain position is slot3), hybrid transmission mode - pattern #2: TRP1 DL + TRP2 UL + TRP3 UL (time domain position is slot4), and uplink transmission mode (time domain position is slot5). For uplink transmission, the network side equipment does not consider the configuration and determination of precoding restriction information.

[0261] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0262] For downlink transmission modes (time domain positions are slot1 and slot2), the association between the downlink signal resources and the base vector can be represented as {(CSI-RS resource#2, base vector v2), (CSI-RS resource#3, base vector v6)}.

[0263] For the hybrid transmission mode pattern #1 (time domain location is slot 3), the relationship between the downlink signal resources and the base vector can be represented as {(CSI-RS resource #2, base vector v4), (CSI-RS resource #3, base vector v6)}, which means that the direction of base vector v4 will cause interference to the uplink reception of TRP2.

[0264] For hybrid transmission mode pattern #2 (time domain location is slot 4), the relationship between the downlink signal resources and the base vector can be represented as {(CSI-RS resource #2, base vector v4), (CSI-RS resource #3, base vector v7)}, which means that the base vector v4 direction causes interference to the uplink reception of TRP2, and the base vector v7 direction causes interference to the uplink reception of TRP3.

[0265] 3) The network side configures downlink signal resource sets CSI-RS resource set#1 and CSI-RS resource set#2 for the UE, or configures cell#1 and cell#2. Cell#1 corresponds to CSI-RS resource set#1, which includes CSI-RS resource#1, CSI-RS resource#2 and CSI-RS resource#3, and the TDD configuration for TRP1 to TRP3 is DDDUU. Cell#2 corresponds to CSI-RS resource set#2, which includes CSI-RS resource#4 and CSI-RS resource#5, and the TDD configuration for TRP4 and TRP5 is DDUUU.

[0266] The transmission mode information includes three types: downlink transmission mode cell#1DL+cell#2DL (time domain positions are slot1 and slot2), hybrid transmission mode cell#1DL+cell#2UL (time domain position is slot3), and uplink transmission mode cell#1UL+cell#2UL (time domain positions are slot4 and slot5). The network-side equipment for uplink transmission does not consider the configuration and determination of precoding restriction information.

[0267] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0268] For downlink transmission modes (time domain positions are slot1 and slot2), the association between the downlink signal resources and the basis vectors can be represented in the form of a first set as (CSI-RS resource set #2, basis vector set {v 12 ,v 13}), or (cell#2, basis vector set {v 12 ,v 13}).

[0269] For the hybrid transmission mode (time domain location is slot 3), the association between the downlink signal resources and the base vector can be represented in the form of a first set as (CSI-RS resource set #2, base vector v 15 ), or (cell#2, basis vector v 15 ), can represent the basis vector v 15 The direction interferes with the uplink reception of cell#2 (TRP).

[0270] The application scenario of this embodiment is shown in Figure 6.

[0271] 4) The network side configures downlink signal resources CSI-RS resource#1 and CSI-RS resource#2 for the UE, corresponding to TRP1 and TRP2 respectively. The frequency domain resources of TRP1 are configured as subband1-DL and subband2-DL, and the frequency domain resources of TRP2 are configured as subband1-DL and subband2-UL. This includes two types of frequency domain resource information: downlink transmission frequency domain resource information TRP1 DL+TRP2 DL (frequency domain position is subband1) and full-duplex transmission frequency domain resource information TRP1 DL+TRP2 UL (frequency domain position is subband2). The application scenario of this embodiment is shown in Figure 7.

[0272] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0273] For downlink transmission frequency domain resources (frequency domain position is subband1), the association between the downlink signal resources and the basis vector can be represented in the form of a first set as (CSI-RS resource#2, basis vector v2).

[0274] For full-duplex transmission frequency domain resources (frequency domain location is subband2), the association between the downlink signal resources and the base vector can be represented in the form of a first set as (CSI-RS resource#2, base vector v4), which can indicate that the direction of base vector v4 causes interference to the uplink reception of TRP2.

[0275] (2) In some embodiments, the second association information directly represents the association between the transmission direction configuration information and the precoding restriction information. Assuming the number of CSI-RS ports is 8, parameters (N1,N2) = (4,1), (O1,O2) = (4,1), the length of the CBSR sequence is N1O1N2O2 = 16, and each bit corresponds to a basis vector, assuming the range of the basis vector is v1□v16. In other embodiments, the range of the basis vector can also be v0□v15.

[0276] The second association relationship indicates, for example: the network side configures downlink signal resources CSI-RS resource#1 and CSI-RS resource#2 for the UE, corresponding to TRP1 and TRP2 respectively. The TDD configuration of TRP1 is DDDUU, and the TDD configuration of TRP2 is DDUUU. Considering that TRP1 and TRP2 use the same frequency range, there are three transmission mode information, namely downlink transmission mode TRP1 DL+TRP2 DL (time domain positions are slot1 and slot2), hybrid transmission mode TRP1 DL+TRP2 UL (time domain position is slot3), and uplink transmission mode TRP1 UL+TRP2 UL (time domain positions are slot4 and slot5). The network side equipment for uplink transmission does not consider the configuration and determination of precoding restriction information.

[0277] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0278] For downlink transmission modes (time domain positions are slot1 and slot2), the precoding constraint information associated with CSI-RS resource #1 (e.g., the CBSR sequence in NR) is 0011 1111 1111 1111.

[0279] For the mixed transmission mode (time domain location slot 3), the precoding constraint information associated with the CSI-RS resource #1 (e.g., the CBSR sequence in NR) is 1110 0111 1111 1111.

[0280] (3) In some embodiments, the second association information represents the association between the transmission direction configuration information and the cooperative resource set configuration information.

[0281] For example, the network side configures downlink signal resources CSI-RS resource#1, CSI-RS resource#2, and CSI-RS resource#3 for the UE, corresponding to TRP1, TRP2, and TRP3 respectively. TRP1's TDD configuration is DDDDU, TRP2's is DDUUU, and TRP3's is DDDUU. Considering that TRP1, TRP2, and TRP3 use the same frequency range, there are three transmission mode information and four transmission patterns: downlink transmission mode (time domain positions are slot1 and slot2), hybrid transmission mode - pattern #1: TRP1 DL + TRP2 UL + TRP3 DL (time domain position is slot3), hybrid transmission mode - pattern #2: TRP1 DL + TRP2 UL + TRP3 UL (time domain position is slot4), and uplink transmission mode (time domain position is slot5). For uplink transmission, the network side equipment does not consider the configuration and determination of precoding restriction information. It is understood that there is also a guard period between the downlink and uplink time slots in the TDD configuration described in this application. For example, DDUUU can also be represented as DSUUU, where S represents a special time slot containing the guard period.

[0282] The network side indicates the second association in the third information:

[0283] For downlink transmission modes (time domain positions are slot1 and slot2), the cooperative resource set can be represented as {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3}.

[0284] For hybrid transmission mode pattern #1 (time domain location is slot 3), the cooperative resource set can be represented as {CSI-RS resource #1, CSI-RS resource #3}.

[0285] For hybrid transmission mode pattern #2 (time domain location is slot 4), the cooperative resource set can be represented as {CSI-RS resource #1}.

[0286] (4) In some embodiments, the second association information represents the association between the transmission direction configuration information and the second information.

[0287] For example, the network side configures the UE with a cooperative resource set of {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3}, corresponding to TRP1, TRP2, and TRP3 respectively. TRP1's TDD configuration is DDDDU, TRP2's is DDUUU, and TRP3's is DDDUU. Considering that TRP1, TRP2, and TRP3 use the same frequency range, there are three transmission mode information and four transmission patterns: downlink transmission mode (time domain positions are slot1 and slot2), hybrid transmission mode - pattern #1: TRP1 DL + TRP2 UL + TRP3 DL (time domain position is slot3), hybrid transmission mode - pattern #2: TRP1 DL + TRP2 UL + TRP3 UL (time domain position is slot4), and uplink transmission mode (time domain position is slot5). For uplink transmission, the network side does not consider the configuration and determination of precoding restriction information.

[0288] For example, for CSI-RS resource #1, the network side indicates the second association in the third information:

[0289] For downlink transmission modes (time domain positions are slot1 and slot2), the associated second information can be represented as a sequence of base vectors associated with CSI-RS resources arranged in ascending order based on the CSI-RS resource index (i.e., the first sequence): base vectors v2-v6, indicating that CSI-RS resource #2 is associated with base vector v2 and CSI-RS resource #3 is associated with base vector v6.

[0290] For the hybrid transmission mode pattern #1 (time domain position is slot3), the associated second information can be represented as the first sequence: basis vectors v4-v6.

[0291] For the hybrid transmission mode pattern #2 (time domain position is slot4), the associated second information can be represented as the first sequence: basis vectors v4-v7.

[0292] Example 6

[0293] This embodiment mainly introduces the method for determining the first precoded configuration information.

[0294] In some embodiments, the UE determines the first precoding restriction information based on the third information, including the UE determining the base vector / base vector set / cooperative resource set configuration information associated with the transmission direction configuration information according to the second association relationship in the third information, and indirectly determining the first precoding restriction information based on the base vector / base vector set / cooperative resource set configuration information.

[0295] Assuming the number of CSI-RS ports is 8, the parameters (N1,N2) = (4,1) and (O1,O2) = (4,1), the length of the CBSR sequence is N1O1N2O2 = 16, and each bit corresponds to a basis vector. Assuming the range of the basis vector is v1□v16, it can be understood that in some other embodiments, the range of the basis vector can also be v0□v15.

[0296] For example, the network side configures downlink signal resources CSI-RS resource#1 and CSI-RS resource#2 for the UE, corresponding to TRP1 and TRP2 respectively. The TDD configuration of TRP1 is DDDUU, and the TDD configuration of TRP2 is DDUUU. Considering that TRP1 and TRP2 use the same frequency range, there are three transmission mode information: downlink transmission mode TRP1 DL+TRP2 DL (time domain positions are slot1 and slot2), hybrid transmission mode TRP1 DL+TRP2 UL (time domain position is slot3), and uplink transmission mode TRP1 UL+TRP2 UL (time domain positions are slot4 and slot5). The network side equipment for uplink transmission does not consider the configuration and determination of precoding restriction information.

[0297] Taking CSI-RS resource #1 as an example, the network side configures its associated CBSR sequence as 0010 1111 1111 1111. It can be understood that this sequence can be indicated according to existing protocol methods, or indicated through the first information; other embodiments in this application can also be understood in this way. The network side sends third information, indicating the UE's second association relationship as:

[0298] For downlink transmission modes (time domain positions are slot1 and slot2), the association between the downlink signal resources and the base vector is represented as (CSI-RS resource#2, base vector v2).

[0299] For the hybrid transmission mode (time domain location is slot 3), the association between the downlink signal resource and the base vector is represented as (CSI-RS resource#2, base vector v4).

[0300] Based on the second association relationship in the third information, the UE determines the precoding restriction information for the two transmission modes as follows:

[0301] For downlink transmission modes (time domain positions are slot1 and slot2), the first precoding constraint information is determined to be 00111111 1111 1111.

[0302] For the mixed transmission mode (time domain position is slot3), the second precoding constraint information is determined to be 0110 1111 11111111.

[0303] Furthermore, the UE calculates the CSI information corresponding to the first and second precoding restriction information, and feeds back at least one CSI information to the network-side device. The network-side device is, for example, a network-side device that transmits the CSI-RS#1 signal.

[0304] Example 7

[0305] This embodiment mainly describes how the UE determines precoding constraint information based on at least two of the first information, the second information, and the third information.

[0306] In some embodiments, the UE determines precoding restriction information based on the first information and the second information. For example, the first information indicates common precoding restriction information. Based on the common precoding restriction information, the UE determines the precoding restriction information corresponding to the cooperative resource set according to the association relationship between other downlink signal resources and base vectors in the cooperative resource set indicated by the second information.

[0307] In some embodiments, the UE determines precoding restriction information based on the first information and the third information.

[0308] For example, the network sends first information to the UE, indicating the precoding constraint information of CSI-RS resource #1 corresponding to all possible TRP combinations / cooperative resource sets, such as the CBSR sequence in NR. The first information can be Table 10 or an indication of the elements in Table 10 and their correspondence: Table 10

[0309] The network side sends third information to the UE, including second association information, indicating the cooperative resource set configuration information corresponding to the transmission direction configuration information as follows:

[0310] For downlink transmission mode (time domain location is slot1 and slot2 of each TDD cycle), the cooperative resource set is {CSI-RS resource#1, CSI-RS resource#2, CSI-RS resource#3}.

[0311] For hybrid transmission mode pattern #1 (time domain location is slot 3 for each TDD cycle), the cooperative resource set is {CSI-RS resource #1, CSI-RS resource #3}.

[0312] For hybrid transmission mode pattern #2 (time domain location is slot4 for each TDD cycle), the cooperative resource set is {CSI-RS resource #1}.

[0313] Then, based on the first information and the third information, the UE determines the first precoding restriction information and calculates the corresponding channel state information:

[0314] For the downlink transmission mode (time domain location is slot1 and slot2 of each TDD cycle), the first precoding constraint information is 0111 1101 1111 1111, and the channel state information CSI1 is calculated.

[0315] For the hybrid transmission mode pattern #1 (time domain location is slot 3 of each TDD cycle), the first precoding constraint information is 0011 1101 1111 1111, and the channel state information CSI2 is calculated.

[0316] For the hybrid transmission mode pattern #2 (time domain location is slot4 of each TDD cycle), the first precoding constraint information is 0010 1101 1111 1111, and the channel state information CSI3 is calculated.

[0317] The UE feeds back multiple channel status information, CSI1, CSI2, and CSI3, to the network side.

[0318] In this embodiment, when the UE determines the first precoding restriction information based on at least two of the first, second, and third information and feeds back the channel state information, it does not need to calculate and feed back the CSI corresponding to all TRP combinations / cooperative resource sets. It only needs to feed back the CSI corresponding to the possible TRP combinations / cooperative resource sets, thereby reducing the UE's computational load and processing complexity, as well as the amount of data in the CSI report, thus reducing the terminal complexity.

[0319] Example 8

[0320] This embodiment mainly introduces how to determine the interference measurement smoothing window based on transmission direction configuration information.

[0321] In some embodiments, the UE determines possible combinations of transmission modes based on the transmission direction configuration information in the third information, and determines a first window corresponding to the first combination of transmission modes for the first combination of transmission modes.

[0322] For example, the network side configures downlink signal resources CSI-RS resource#1, CSI-RS resource#2, and CSI-RS resource#3 for the UE, corresponding to TRP1, TRP2, and TRP3 respectively. TRP1's TDD configuration is DDDDU, TRP2's TDD configuration is DDUUU, and TRP3's TDD configuration is DDDUU. Considering that TRP1, TRP2, and TRP3 use the same frequency range, the four possible combinations of transmission modes include:

[0323] Transmission mode combination 1 (time domain positions are slot1 and slot2): TRP1 DL+TRP2 DL+TRP3 DL, corresponding to the cooperative TRP combination {TRP1,TRP2,TRP3}.

[0324] Transmission mode combination 2 (time domain position is slot 3): TRP1 DL+TRP2 UL+TRP3 DL, the corresponding cooperative TRP combination is {TRP1,TRP3}.

[0325] Transmission mode combination 3 (time domain position is slot 4): TRP1 DL+TRP2 UL+TRP3 UL, corresponding to the cooperative TRP combination {TRP1}.

[0326] Transmission mode combination 4 (time domain position is slot 5): TRP1 UL + TRP2 UL + TRP3 UL.

[0327] Therefore, the UE determines the four transmission mode combinations corresponding to the first window as follows:

[0328] Transmission mode combination 1: The first window is slot1 to slot2.

[0329] Transmission mode combination 2: The first window is slot 3.

[0330] Transmission mode combination 3: The first window is slot4.

[0331] Transmission mode combination 4: The first window is slot 5.

[0332] The UE performs interference measurement smoothing in the corresponding first window to obtain the interference measurement results for the corresponding time / cooperative TRP combination / cooperative resource set.

[0333] In this embodiment, for different combinations of TRP transmission modes, the interference environment for data transmission is different. The UE determines the smoothing window for interference measurement, measures and calculates the corresponding interference results, and can obtain more accurate interference information and channel state information. The network side can then perform more accurate and reasonable scheduling based on this information.

[0334] The method for determining precoding restriction information according to an embodiment of this application has been described in detail above with reference to FIG2. The method for determining precoding restriction information according to another embodiment of this application will now be described in detail with reference to FIG8. It is understood that the interaction between the network-side device and the terminal described from the perspective of the network-side device is the same as or corresponds to the terminal-side description in the method shown in FIG2; to avoid repetition, relevant descriptions are appropriately omitted.

[0335] Figure 8 is a schematic flowchart illustrating the method for determining precoding restriction information according to an embodiment of this application, which can be applied to network-side devices. As shown in Figure 8, the method 800 includes the following steps.

[0336] S802: The network-side device sends a fifth message, which is used to indicate the first precoding restriction information. The fifth message is at least one of the following: a first message, a second message, or a third message.

[0337] Wherein, the first information is used to indicate multiple precoding restriction information; the second information is used to indicate the first association relationship information between the first parameter and the base vector, wherein the first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, cell; and the third information is used to indicate the transmission direction configuration information of the network-side device.

[0338] In this embodiment, the network-side device sends fifth information, which is used to indicate first precoding constraint information. The fifth information includes at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information; the second information indicates a first correlation relationship between a first parameter and a basis vector; and the third information indicates the transmission direction configuration information of the network-side device. This embodiment is beneficial for configuring reasonable precoding constraint information for terminals in scenarios such as TRP cooperative clusters and other multi-network node cooperative service terminals, improving the accuracy of channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling.

[0339] In one embodiment, the first information is used to indicate the first precoding constraint information corresponding to the TRP combination; or, the first information is used to indicate common precoding constraint information and dedicated precoding constraint information corresponding to the TRP combination, wherein the first precoding constraint information is obtained based on the common precoding constraint information and the dedicated precoding constraint information.

[0340] In one embodiment, the network-side device sending the fifth information includes: the network-side device sending CSI reporting configuration information, wherein the CSI reporting configuration information includes the first information.

[0341] In one embodiment, the CSI reported configuration information includes one or more sub-configuration information, each of the sub-configuration information including the first precoding restriction information corresponding to a TRP combination.

[0342] In one embodiment, the second information includes at least one of the following:

[0343] 1) A first set, wherein each element in the first set is used to indicate the first parameter and the basis vector associated with the first parameter.

[0344] 2) A first sequence, wherein each unit in the first sequence is used to indicate the basis vector.

[0345] 3) A second sequence, wherein each unit in the second sequence is used to indicate the first parameter.

[0346] 4) The first association information between the first parameter and the base vector.

[0347] In one embodiment, 1) the plurality of units in the first sequence are arranged in a first order, the first order including at least one of the following: the order of the indices of the first parameter, the order of the elements in the first parameter combination, the order of the elements in the second parameter combination, wherein the elements in the first parameter combination include cells, downlink signal resource sets and downlink signal resources, and the elements in the second parameter combination include cells, TRP combinations and TRPs; 2) the plurality of units in the second sequence are arranged in a second order, the second order including: the order of the indices of the base vector.

[0348] In one embodiment, the method further includes: the network-side device sending first configuration information, the first configuration information including at least one of the following: cooperative resource set configuration information, configuration information of the first parameter; the cooperative resource set includes downlink signal resources for cooperative transmission.

[0349] In one embodiment, the transmission direction configuration information includes at least one of the following: 1) transmission mode information, used to indicate a transmission mode or transmission mode pattern, wherein the transmission mode includes at least one of the following: uplink transmission, downlink transmission, hybrid transmission, flexible transmission, and the transmission mode pattern is used to indicate the arrangement pattern of the transmission modes in each transmission cycle; uplink transmission time resource information, used to indicate time resources for uplink transmission only; 2) downlink transmission time resource information, used to indicate time resources for downlink transmission only; 3) flexible transmission time resource information, used to indicate time resources for which the transmission direction is not determined; 4) hybrid transmission time resource information, used to indicate time resources including uplink transmission and downlink transmission; 5) uplink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 6) downlink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 7) full-duplex transmission frequency domain resource information, used to indicate the frequency domain range for simultaneous uplink and downlink transmission; wherein, the transmission mode includes at least one transmission pattern, and different transmission patterns under the same transmission mode correspond to different frequency domain resource configurations.

[0350] In one embodiment, the third information further includes second association information, which includes at least one of the following: 1) the association between the transmission direction configuration information and the base vector or base vector set; 2) the association between the transmission direction configuration information and the precoding constraint information; 3) the association between the transmission direction configuration information and the cooperative resource set configuration information; 4) the association between the transmission direction configuration information and the second information, used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; and third association information corresponding to the transmission direction configuration information, wherein the third association information is the association information between the first parameter and the base vector; wherein each unit in the first set is used to indicate the first parameter and the base vector associated with the first parameter; each unit in the first sequence is used to indicate the base vector; each unit in the second sequence is used to indicate the first parameter; and the first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP group, cell.

[0351] In one embodiment, the method further includes: the network-side device receiving channel state information, the channel state information being generated based on the first precoding constraint information.

[0352] In one embodiment, the method further includes: the network-side device sending fourth information, the fourth information being used to indicate a first window; wherein the channel state information includes at least one of the following within the first window: interference measurement results, channel matrix, channel quality indication, rank indication, precoding matrix indication, interference or noise information.

[0353] The method for determining precoding restriction information provided in this application can be executed by a device for determining precoding restriction information. This application uses an example of a device for determining precoding restriction information executing the method to illustrate the device for determining precoding restriction information provided in this application.

[0354] This application provides a device for determining precoding restriction information. As an example, the device for determining precoding restriction information can be a communication device or a component in a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0355] The device for determining precoded restriction information includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0356] Specifically, referring to Figure 9, when the device for determining precoding restriction information is a terminal or a component within a terminal, the device 900 for determining precoding restriction information includes a processing module 902, used to determine first precoding restriction information based on at least one of the following: first information, second information, and third information; wherein, the first information is used to indicate multiple precoding restriction information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of the network-side device.

[0357] The processing module 902 is further configured to determine channel state information based on the first precoding restriction information.

[0358] In this embodiment, the processing module 902 determines first precoding constraint information based on at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information, the second information indicates a first correlation relationship between a first parameter and a basis vector, and the third information indicates transmission direction configuration information of the network-side device. Channel state information is determined based on the first precoding constraint information. This embodiment is beneficial for configuring reasonable precoding constraint information for terminals in scenarios such as TRP cooperative clusters and other multi-network node cooperative service terminals, improving the accuracy of the channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling.

[0359] In one embodiment, the first information is used to indicate the first precoding constraint information corresponding to the TRP combination; or, the first information is used to indicate common precoding constraint information and dedicated precoding constraint information corresponding to the TRP combination, wherein the first precoding constraint information is obtained based on the common precoding constraint information and the dedicated precoding constraint information.

[0360] In one embodiment, the processing module 902 is configured to determine a first TRP combination from the TRP combinations indicated by the first information; determine the first precoding restriction information corresponding to the first TRP combination; or, determine a first TRP combination set from the TRP combinations indicated by the first information, wherein the first TRP combination set includes some or all of the TRP combinations indicated by the first information; and determine the first precoding restriction information corresponding to the TRP combinations in the first TRP combination set respectively.

[0361] In one embodiment, the device 900 further includes a communication module for receiving CSI reported configuration information, the CSI reported configuration information including the first information.

[0362] In one embodiment, the CSI reported configuration information includes one or more sub-configuration information, each of the sub-configuration information including the first precoding restriction information corresponding to a TRP combination.

[0363] In one embodiment, the second information includes at least one of the following: 1) a first set, each unit in the first set being used to indicate the first parameter and the basis vector associated with the first parameter; 2) a first sequence, each unit in the first sequence being used to indicate the basis vector; 3) a second sequence, each unit in the second sequence being used to indicate the first parameter; and 4) the first association information between the first parameter and the basis vector.

[0364] In one embodiment, 1) the plurality of units in the first sequence are arranged in a first order, the first order including at least one of the following: the order of the indices of the first parameter, the order of the elements in the first parameter combination, the order of the elements in the second parameter combination, wherein the elements in the first parameter combination include cells, downlink signal resource sets and downlink signal resources, and the elements in the second parameter combination include cells, TRP combinations and TRPs; 2) the plurality of units in the second sequence are arranged in a second order, the second order including: the order of the indices of the base vector.

[0365] In one embodiment, the processing module 902 is configured to determine first precoding restriction information based on the second information and the first configuration information.

[0366] In one embodiment, the first configuration information includes at least one of the following: cooperative resource set configuration information, configuration information of the first parameter; the cooperative resource set includes downlink signal resources for cooperative transmission.

[0367] In one embodiment, the processing module 902 is configured to determine a first cooperative resource set based on the first configuration information, wherein the first precoding restriction information is precoding restriction information associated with a first downlink signal resource in the first cooperative resource set; if the first cooperative resource set contains a second downlink signal resource, the parameter associated with the second downlink signal resource in the first precoding restriction information is not set to zero; or, if the first cooperative resource set does not contain a second downlink signal resource, the parameter associated with the second downlink signal resource in the first precoding restriction information is set to zero; wherein the first parameter includes the second downlink signal resource.

[0368] In one embodiment, the processing module 902 is further configured to determine that the first cooperative resource set contains the third downlink signal resource set if the first cooperative resource set contains a third downlink signal resource and the third downlink signal resource belongs to the third downlink signal resource set; wherein the first parameter includes the third downlink signal resource or the third downlink signal resource set.

[0369] In one embodiment, the processing module 902 is used to determine channel state information based on the first cooperative resource set corresponding to the first precoding restriction information.

[0370] In one embodiment, the transmission direction configuration information includes at least one of the following: 1) transmission mode information, used to indicate a transmission mode or transmission mode pattern, wherein the transmission mode includes at least one of the following: uplink transmission, downlink transmission, hybrid transmission, flexible transmission, and the transmission mode pattern is used to indicate the arrangement pattern of the transmission modes in each transmission cycle; 2) uplink transmission time resource information, used to indicate time resources for uplink transmission only; 3) downlink transmission time resource information, used to indicate time resources for downlink transmission only; 4) flexible transmission time resource information, used to indicate time resources for which the transmission direction is not determined; 5) hybrid transmission time resource information, used to indicate time resources including uplink transmission and downlink transmission; 6) uplink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 7) downlink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 8) full-duplex transmission frequency domain resource information, used to indicate the frequency domain range for simultaneous uplink and downlink transmission; 9) wherein the transmission mode includes at least one transmission pattern, and different transmission patterns under the same transmission mode correspond to different frequency domain resource configurations.

[0371] In one embodiment, the third information further includes second association information, which includes at least one of the following: 1) the association between the transmission direction configuration information and the base vector or base vector set; 2) the association between the transmission direction configuration information and the precoding constraint information; 3) the association between the transmission direction configuration information and the cooperative resource set configuration information; 4) the association between the transmission direction configuration information and the second information, used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; and third association information corresponding to the transmission direction configuration information, wherein the third association information is the association information between the first parameter and the base vector; wherein each unit in the first set is used to indicate the first parameter and the base vector associated with the first parameter; each unit in the first sequence is used to indicate the base vector; each unit in the second sequence is used to indicate the first parameter; the first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, cell.

[0372] In one embodiment, the processing module 902 is configured to: 1) determine the base vector or base vector set associated with the transmission direction configuration information based on the second association information, and determine the first precoding restriction information based on the base vector or base vector set; 2) determine the precoding restriction information associated with the transmission direction configuration information as the first precoding restriction information based on the second association information; 3) determine the cooperative resource set configuration information associated with the transmission direction configuration information based on the second association information, and determine the first precoding restriction information based on the cooperative resource set configuration information; 4) determine the second information associated with the transmission direction configuration information based on the second association information, and determine the first precoding restriction information based on the second information.

[0373] In one embodiment, the processing module 902 is used to determine channel state information based on the first precoding restriction information and the TRP combination; the TRP combination is determined based on the transmission direction configuration information.

[0374] In one embodiment, the processing module 902 is further configured to determine a first window based on fourth information or a second rule; perform a functional relationship operation on the interference measurement values ​​within the first window to obtain the interference measurement result within the first window; wherein, determining the channel state information based on the first precoding constraint information includes: determining the channel state information within the first window based on the first precoding constraint information; the channel state information includes at least one of the following within the first window: interference measurement result, channel matrix, channel quality indicator, rank indicator, precoding matrix indicator, interference or noise information.

[0375] In one embodiment, the fourth information is used to indicate at least one of the following for the first window: start time, end time, window duration or range, and repetition period.

[0376] In one embodiment, the processing module 902 is configured to determine at least one transmission mode combination based on transmission direction configuration information, the at least one transmission mode combination including a first transmission mode combination; and determine the first window corresponding to the first transmission mode combination.

[0377] In one embodiment, the first transmission mode combination is a combination of transmission modes corresponding to one or more first parameters, the first parameter including one of the following: downlink signaling resources, downlink signaling resource set, TRP, TRP combination, cell.

[0378] In one embodiment, the first transmission mode combination is associated with a second TRP combination or a second cooperative resource set; wherein, the first transmission mode combination is a transmission mode combination corresponding to one or more first parameters in the second TRP combination or the second cooperative resource set, and the first parameter includes one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, cell.

[0379] Referring to Figure 10, when the device for determining precoding restriction information is a network-side device or a component within a network-side device, the device 1000 for determining precoding restriction information includes a communication module 1002 for transmitting fifth information. The fifth information is used to indicate first precoding restriction information. The fifth information includes at least one of the following: first information, second information, and third information. The first information indicates multiple precoding restriction information. The second information indicates a first correlation relationship between a first parameter and a base vector. The first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, and cell. The third information indicates the transmission direction configuration information of the network-side device.

[0380] In this embodiment, the communication module 1002 sends fifth information, which is used to indicate first precoding constraint information. The fifth information includes at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information; the second information indicates a first correlation relationship between a first parameter and a base vector; and the third information indicates transmission direction configuration information of the network-side device. This embodiment is beneficial for configuring reasonable precoding constraint information for terminals in scenarios such as TRP cooperative clusters and other multi-network node cooperative service terminals, improving the accuracy of channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling.

[0381] In one embodiment, the first information is used to indicate the first precoding constraint information corresponding to the TRP combination; or, the first information is used to indicate common precoding constraint information and dedicated precoding constraint information corresponding to the TRP combination, wherein the first precoding constraint information is obtained based on the common precoding constraint information and the dedicated precoding constraint information.

[0382] In one embodiment, the communication module 1002 is used to send CSI reporting configuration information, the CSI reporting configuration information including the first information.

[0383] In one embodiment, the CSI reported configuration information includes one or more sub-configuration information, each of the sub-configuration information including the first precoding restriction information corresponding to a TRP combination.

[0384] In one embodiment, the second information includes at least one of the following:

[0385] 1) A first set, wherein each element in the first set is used to indicate the first parameter and the basis vector associated with the first parameter.

[0386] 2) A first sequence, wherein each unit in the first sequence is used to indicate the basis vector.

[0387] 3) A second sequence, wherein each unit in the second sequence is used to indicate the first parameter.

[0388] 4) The first association information between the first parameter and the base vector.

[0389] In one embodiment, 1) the plurality of units in the first sequence are arranged in a first order, the first order including at least one of the following: the order of the indices of the first parameter, the order of the elements in the first parameter combination, the order of the elements in the second parameter combination, wherein the elements in the first parameter combination include cells, downlink signal resource sets and downlink signal resources, and the elements in the second parameter combination include cells, TRP combinations and TRPs; 2) the plurality of units in the second sequence are arranged in a second order, the second order including: the order of the indices of the base vector.

[0390] In one embodiment, the communication module 1002 is further configured to send first configuration information, the first configuration information including at least one of the following: cooperative resource set configuration information, configuration information of the first parameter; the cooperative resource set includes downlink signal resources for cooperative transmission.

[0391] In one embodiment, the transmission direction configuration information includes at least one of the following: 1) transmission mode information, used to indicate a transmission mode or transmission mode pattern, wherein the transmission mode includes at least one of the following: uplink transmission, downlink transmission, hybrid transmission, flexible transmission, and the transmission mode pattern is used to indicate the arrangement pattern of the transmission modes in each transmission cycle; uplink transmission time resource information, used to indicate time resources for uplink transmission only; 2) downlink transmission time resource information, used to indicate time resources for downlink transmission only; 3) flexible transmission time resource information, used to indicate time resources for which the transmission direction is not determined; 4) hybrid transmission time resource information, used to indicate time resources including uplink transmission and downlink transmission; 5) uplink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 6) downlink transmission frequency domain resource information, used to indicate frequency domain resources for uplink transmission only; 7) full-duplex transmission frequency domain resource information, used to indicate the frequency domain range for simultaneous uplink and downlink transmission; wherein, the transmission mode includes at least one transmission pattern, and different transmission patterns under the same transmission mode correspond to different frequency domain resource configurations.

[0392] In one embodiment, the third information further includes second association information, which includes at least one of the following: 1) the association between the transmission direction configuration information and the base vector or base vector set; 2) the association between the transmission direction configuration information and the precoding constraint information; 3) the association between the transmission direction configuration information and the cooperative resource set configuration information; 4) the association between the transmission direction configuration information and the second information, used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; and third association information corresponding to the transmission direction configuration information, wherein the third association information is the association information between the first parameter and the base vector; wherein each unit in the first set is used to indicate the first parameter and the base vector associated with the first parameter; each unit in the first sequence is used to indicate the base vector; each unit in the second sequence is used to indicate the first parameter; and the first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP group, cell.

[0393] In one embodiment, the communication module 1002 is further configured to receive channel state information, which is generated based on the first precoding constraint information.

[0394] In one embodiment, the communication module 1002 is further configured to send fourth information, the fourth information being used to indicate a first window; wherein the channel state information includes at least one of the following within the first window: interference measurement results, channel matrix, channel quality indication, rank indication, precoding matrix indication, interference or noise information.

[0395] The device for determining precoding restriction information provided in this application embodiment can implement the various processes implemented in the method embodiments of Figures 2 to 8 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0396] As shown in Figure 11, this application embodiment also provides a communication device 1100, including a processor 1101 and a memory 1102. The memory 1102 stores a program or instructions that can run on the processor 1101. For example, when the communication device 1100 is a terminal, the program or instructions executed by the processor 1101 implement the various steps of the above-described method embodiment for determining pre-encoded restriction information, and achieve the same technical effect. When the communication device 1100 is a network-side device, the program or instructions executed by the processor 1101 implement the various steps of the above-described method embodiment for determining pre-encoded restriction information, and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0397] This 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 programs or instructions to implement the steps in the method embodiment shown in FIG2. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the device for determining precoding restriction information shown in FIG9. Specifically, FIG12 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0398] The terminal 1200 includes, but is not limited to, at least some of the following components: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, and processor 1210.

[0399] Those skilled in the art will understand that terminal 1200 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to processor 1210 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 12 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0400] It should be understood that, in this embodiment, the input unit 1204 may include a graphics processor 12041 and a microphone 12042. The graphics processor 12041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0401] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1201 can transmit it to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Typically, the radio frequency unit 1201 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0402] The memory 1209 can be used to store software programs or instructions, as well as various data. The memory 1209 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1209 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1209 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0403] Processor 1210 may include one or more processing units; optionally, processor 1210 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1210.

[0404] The processor 1210 is configured to determine first precoding constraint information based on at least one of the following: first information, second information, and third information; wherein the first information is used to indicate multiple precoding constraint information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signaling resource, downlink signaling resource set, TRP, TRP combination, and cell; the third information is used to indicate transmission direction configuration information of the network-side device; and to determine channel state information based on the first precoding constraint information.

[0405] In this embodiment, the terminal determines first precoding constraint information based on at least one of the following: first information, second information, and third information. The first information indicates multiple precoding constraint information, the second information indicates a first correlation relationship between a first parameter and a basis vector, and the third information indicates transmission direction configuration information of the network-side device. The terminal determines channel state information based on the first precoding constraint information. This embodiment is beneficial for configuring reasonable precoding constraint information for the terminal in scenarios such as TRP cooperative clusters where multiple network nodes cooperate to serve the terminal, improving the accuracy of the channel state information obtained by the terminal, and thus assisting the network-side device in performing more reasonable and accurate scheduling.

[0406] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment for determining precoding restriction information and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0407] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG8. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0408] Specifically, this application embodiment also provides a network-side device, which may be the precoding restriction information determination device shown in FIG10. As shown in FIG13, the network-side device 1300 includes: an antenna 131, a radio frequency device 132, a baseband device 133, a processor 134, and a memory 135. The antenna 131 is connected to the radio frequency device 132. In the uplink direction, the radio frequency device 132 receives information through the antenna 131 and sends the received information to the baseband device 133 for processing. In the downlink direction, the baseband device 133 processes the information to be transmitted and sends it to the radio frequency device 132. The radio frequency device 132 processes the received information and transmits it through the antenna 131.

[0409] The radio frequency device 132 is used to transmit fifth information, which is used to indicate first precoding restriction information. The fifth information includes at least one of the following: first information, second information, and third information. The first information is used to indicate multiple precoding restriction information. The second information is used to indicate a first association relationship between a first parameter and a base vector. The first parameter includes one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, and cell. The third information is used to indicate the transmission direction configuration information of the network-side device.

[0410] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 133, which includes a baseband processor.

[0411] The baseband device 133 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG13. One of the chips is, for example, a baseband processor, which is connected to the memory 135 via a bus interface to call the program in the memory 135 and execute the network device operation shown in the above method embodiment.

[0412] The network-side device may also include a network interface 136, such as a Common Public Radio Interface (CPRI).

[0413] Specifically, the network-side device 1300 in this application embodiment further includes: instructions or programs stored in memory 135 and executable on processor 134. Processor 134 calls the instructions or programs in memory 135 to execute the methods executed by each module shown in FIG10 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0414] The radio frequency device 131 is configured to: transmit fifth information, the fifth information being used to indicate first precoding restriction information, the fifth information being at least one of the following: first information, second information, and third information; wherein the first information is used to indicate multiple precoding restriction information; the second information is used to indicate a first association relationship between a first parameter and a base vector, the first parameter including one of the following: downlink signal resource, downlink signal resource set, TRP, TRP combination, and cell; and the third information is used to indicate transmission direction configuration information of the network-side device.

[0415] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described method embodiment for determining pre-encoded restriction information and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0416] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0417] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described method embodiment for determining pre-encoded restriction information, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0418] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0419] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described method embodiment for determining pre-encoded restriction information, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0420] This application also provides a system for determining precoding restriction information, including: a terminal and a network-side device. The terminal can be used to perform the steps of the method for determining precoding restriction information as described above, and the network-side device can be used to perform the steps of the method for determining precoding restriction information as described above.

[0421] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0422] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0423] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A method for determining precoding restriction information, comprising: determining, by a terminal, first precoding restriction information based on at least one of the following: first information, second information, and third information, wherein the first information is used to indicate a plurality of precoding restriction information; the second information is used to indicate first association information between a first parameter and a base vector, the first parameter comprises one of the following: a downlink signal resource, a downlink signal resource set, a transmission reception point (TRP), a TRP combination, and a cell; and the third information is used to indicate transmission direction configuration information of a network side device; and determining, by the terminal, channel state information based on the first precoding restriction information. 2.The method of claim 1, wherein the first information is used to indicate the first precoding restriction information corresponding to a TRP combination; or the first information is used to indicate common precoding restriction information and dedicated precoding restriction information corresponding to a TRP combination, and the first precoding restriction information is obtained based on the common precoding restriction information and the dedicated precoding restriction information. The determining the first precoding restriction information based on the first information comprises: determining a first TRP combination from the TRP combinations indicated by the first information; and determining the first precoding restriction information corresponding to the first TRP combination; or determining a first TRP combination set from the TRP combinations indicated by the first information, the first TRP combination set containing part or all of the TRP combinations indicated by the first information; and determining the first precoding restriction information corresponding respectively to the TRP combinations in the first TRP combination set. The method further comprises: receiving, by the terminal, channel state information (CSI) reporting configuration information, the CSI reporting configuration information comprising the first information. The CSI reporting configuration information comprises one or more sub-configuration information, and each sub-configuration information comprises the first precoding restriction information corresponding to a TRP combination. The second information comprises at least one of the following: a first set, each element in the first set being used to indicate the first parameter and the base vector associated with the first parameter; a first sequence, each element in the first sequence being used to indicate the base vector; a second sequence, each element in the second sequence being used to indicate the first parameter; and the first association information between the first parameter and the base vector.

3. The method of claim 1 or 2, wherein, 7.The method of claim 6, wherein the plurality of elements in the first sequence are arranged in a first order, and the first order comprises at least one of the following: an arrangement order of indexes of the first parameter, an arrangement order of elements in a first parameter combination, and an arrangement order of elements in a second parameter combination, the elements in the first parameter combination comprising a cell, a downlink signal resource set, and a downlink signal resource, and the elements in the second parameter combination comprising a cell, a TRP combination, and a TRP; and the plurality of elements in the second sequence are arranged in a second order, and the second order comprises an arrangement order of indexes of the base vector. The determining the first precoding restriction information based on the second information comprises: ​ 4. The method according to any one of claims 1 to 3, wherein, ​ ​ 5. The method of claim 4, wherein, ​ 6. The method of claim 1, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ 8. The method of claim 1, 6 or 7, wherein, ​ determine first precoding restriction information based on the second information and first configuration information.

9. The method of claim 8, wherein, The first configuration information comprises at least one of: cooperation resource set configuration information, configuration information of the first parameter. The cooperation resource set comprises downlink signal resources for cooperation transmission.

10. The method of claim 8 or 9, wherein, The determination of the first precoding restriction information based on the second information and the first configuration information comprises: determining a first cooperation resource set based on the first configuration information, and the first precoding restriction information being precoding restriction information associated with a first downlink signal resource in the first cooperation resource set; if the first cooperation resource set contains a second downlink signal resource, not setting a parameter associated with the second downlink signal resource in the first precoding restriction information to zero; or if the first cooperation resource set does not contain the second downlink signal resource, setting the parameter associated with the second downlink signal resource in the first precoding restriction information to zero; wherein the first parameter comprises the second downlink signal resource.

11. The method of claim 10, wherein, The method further comprises: if the first cooperation resource set contains a third downlink signal resource, the third downlink signal resource belonging to a third downlink signal resource set, determining that the first cooperation resource set contains the third downlink signal resource set; wherein the first parameter comprises the third downlink signal resource or the third downlink signal resource set.

12. The method of claim 10, wherein, The determination of the channel state information based on the first precoding restriction information comprises: determining channel state information based on the first cooperation resource set corresponding to the first precoding restriction information.

13. The method of claim 1, wherein, The transmission direction configuration information comprises at least one of: transmission mode information, used to indicate a transmission mode or a transmission mode pattern, the transmission mode comprising at least one of: uplink transmission, downlink transmission, hybrid transmission, flexible transmission, the transmission mode pattern being used to indicate an arrangement pattern of the transmission mode in each transmission period; time resource information of uplink transmission, used to indicate time resources of only uplink transmission; time resource information of downlink transmission, used to indicate time resources of only downlink transmission; time resource information of flexible transmission, used to indicate time resources of undetermined transmission direction; time resource information of hybrid transmission, used to indicate time resources containing uplink transmission and downlink transmission; frequency domain resource information of uplink transmission, used to indicate frequency domain resources of only uplink transmission; frequency domain resource information of downlink transmission, used to indicate frequency domain resources of only uplink transmission; frequency domain resource information of full-duplex transmission, used to indicate frequency domain range for simultaneous uplink transmission and downlink transmission; wherein the transmission mode comprises at least one transmission pattern, and different transmission patterns under the same transmission mode correspond to different frequency domain resource configurations respectively.

14. The method of claim 1 or 13, wherein, The third information further comprises second association relationship information, the second association relationship information comprising at least one of: an association relationship between the transmission direction configuration information and a basis vector or a basis vector set; an association relationship between the transmission direction configuration information and precoding restriction information; an association relationship between the transmission direction configuration information and cooperation resource set configuration information; The association relationship between the transmission direction configuration information and the second information is used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; third association relationship information corresponding to the transmission direction configuration information, the third association relationship information being an association relationship information between a first parameter and a basis vector. Each element in the first set is used to indicate a first parameter and a basis vector associated with the first parameter; each element in the first sequence is used to indicate a basis vector; each element in the second sequence is used to indicate a first parameter; the first parameter includes at least one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP combination, and a cell.

15. The method of claim 14, wherein, The determining the first precoding restriction information based on the third information includes at least one of the following: Based on the second association relationship information, determining the basis vector or basis vector set associated with the transmission direction configuration information, and determining the first precoding restriction information based on the basis vector or basis vector set; Based on the second association relationship information, determining that the precoding restriction information associated with the transmission direction configuration information is the first precoding restriction information; Based on the second association relationship information, determining the cooperative resource set configuration information associated with the transmission direction configuration information, and determining the first precoding restriction information based on the cooperative resource set configuration information; Based on the second association relationship information, determining the second information associated with the transmission direction configuration information, and determining the first precoding restriction information based on second information.

16. The method according to any one of claims 13 to 15, wherein, The determining the channel state information based on the first precoding restriction information includes: Determining the channel state information based on the first precoding restriction information and a TRP combination, the TRP combination being determined based on the transmission direction configuration information.

17. The method of any one of claims 1 to 16, wherein, The method further includes: Determining a first window based on fourth information or a second rule; Performing a functional relationship operation on an interference measurement value in the first window to obtain an interference measurement result in the first window; The determining the channel state information based on the first precoding restriction information includes: determining the channel state information in the first window based on the first precoding restriction information; the channel state information includes at least one of the following in the first window: an interference measurement result, a channel matrix, a channel quality indicator, a rank indicator, a precoding matrix indicator, and interference or noise information.

18. The method of claim 17, wherein The fourth information is used to indicate at least one of the following of the first window: a start time, an end time, a window time length or range, and a repetition period.

19. The method of claim 17, wherein, The determining the first window based on the second rule includes: Determining at least one transmission mode combination based on transmission direction configuration information, the at least one transmission mode combination including a first transmission mode combination; Determining the first window corresponding to the first transmission mode combination.

20. The method of claim 19, wherein The first transmission mode combination is a combination of transmission modes corresponding to one or more first parameters, and the first parameters include one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP combination, and a cell.

21. The method of claim 19, wherein, The first transmission mode combination is associated with a second TRP combination or a second cooperative resource set; The first transmission mode combination is a combination of transmission modes corresponding to one or more first parameters in the second TRP combination or the second cooperative resource set, and the first parameters include one of the following: a downlink signal resource, a downline signal resource set, a TRP, a TRP combination, and a cell.

22. A method for determining precoding restriction information, comprising: A network-side device sends fifth information, the fifth information is used to indicate first precoding restriction information, and the fifth information is at least one of the following: first information, second information, and third information; wherein the first information is used to indicate a plurality of precoding restriction information; the second information is used to indicate first association relationship information between a first parameter and a base vector, and the first parameter includes one of the following: a downlink signal resource, a downlink signal resource set, a TPR, a TRP combination, and a cell; and the third information is used to indicate transmission direction configuration information of the network-side device.

23. The method of claim 22, wherein, The first information is used to indicate the first precoding restriction information corresponding to a TRP combination; or The first information is used to indicate common precoding restriction information and dedicated precoding restriction information corresponding to a TRP combination, and the first precoding restriction information is obtained based on the common precoding restriction information and the dedicated precoding restriction information.

24. The method of claim 22 or 23, wherein, The network-side device sends fifth information, which includes: The network-side device sends CSI reporting configuration information, and the CSI reporting configuration information includes the first information.

25. The method of claim 22, wherein, The second information includes at least one of the following: A first set, each element in the first set is used to indicate the first parameter and the base vector associated with the first parameter; A first sequence, each element in the first sequence is used to indicate the base vector; A second sequence, each element in the second sequence is used to indicate the first parameter; The first association relationship information between the first parameter and the base vector.

26. The method of claim 22 or 25, wherein, The method further includes: The network-side device sends first configuration information, and the first configuration information includes at least one of the following: cooperative resource set configuration information and configuration information of the first parameter; The cooperative resource set includes downlink signal resources for cooperative transmission.

27. The method of claim 22, wherein, The transmission direction configuration information includes at least one of the following: Transmission mode information, used to indicate a transmission mode or a transmission mode pattern, the transmission mode includes at least one of the following: uplink transmission, downlink transmission, hybrid transmission, and flexible transmission, and the transmission mode pattern is used to indicate an arrangement pattern of the transmission mode in each transmission period; and time resource information of uplink transmission, used to indicate time resources for only uplink transmission; Time resource information of downlink transmission, used to indicate time resources for only downlink transmission; and time resource information of flexible transmission, used for indicating time resources of uncertain transmission direction; time resource information of hybrid transmission, used for indicating time resources containing uplink transmission and downlink transmission; frequency domain resource information of uplink transmission, used for indicating frequency domain resources of only uplink transmission; frequency domain resource information of downlink transmission, used for indicating frequency domain resources of only downlink transmission; frequency domain resource information of full-duplex transmission, used for indicating frequency domain resources of simultaneous uplink transmission and downlink transmission; wherein the transmission mode includes at least one transmission pattern, and different transmission patterns in the same transmission mode correspond to different frequency domain resource configurations.

28. The method of claim 22 or 27, wherein, The third information further includes second association relationship information, and the second association relationship information includes at least one of the following: an association relationship between the transmission direction configuration information and a basis vector or a basis vector set; an association relationship between the transmission direction configuration information and precoding restriction information; an association relationship between the transmission direction configuration information and cooperation resource set configuration information; an association relationship between the transmission direction configuration information and the second information, used for indicating at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; third association relationship information corresponding to the transmission direction configuration information, the third association relationship information being an association relationship information between a first parameter and a basis vector; wherein each unit in the first set is used for indicating a first parameter and a basis vector associated with the first parameter; each unit in the first sequence is used for indicating a basis vector; each unit in the second sequence is used for indicating a first parameter; and the first parameter includes one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP combination, and a cell.

29. The method of any one of claims 22 to 28, wherein, The method further includes: The network-side device receives channel state information, which is generated based on the first precoding restriction information.

30. The method of claim 29, wherein, The method further includes: The network-side device sends fourth information, which is used for indicating a first window; wherein the channel state information includes at least one of the following in the first window: an interference measurement result, a channel matrix, a channel quality indicator, a rank indicator, a precoding matrix indicator, and interference or noise information.

31. A device for determining precoding restriction information, comprising: a processing module, configured to determine first precoding restriction information based on at least one of the following: first information, second information, and third information; wherein the first information is used for indicating a plurality of precoding restriction information; the second information is used for indicating first association relationship information between a first parameter and a basis vector, the first parameter including one of the following: a downlink signal resource, a downlink signal resource set, a transmission reception point (TRP), a TRP combination, and a cell; and the third information is used for indicating transmission direction configuration information of a network-side device; the processing module is further configured to determine channel state information based on the first precoding restriction information.

32. The device of claim 31, wherein The first information is used to indicate the first precoding restriction information corresponding to a TRP combination; or The first information is used to indicate common precoding restriction information and dedicated precoding restriction information corresponding to a TRP combination, and the first precoding restriction information is obtained based on the common precoding restriction information and the dedicated precoding restriction information.

33. The apparatus of claim 31, wherein, The processing module is configured to: determine a first cooperative resource set based on first configuration information, and the first precoding restriction information is precoding restriction information associated with a first downlink signal resource in the first cooperative resource set; if the first cooperative resource set contains a second downlink signal resource, not set a parameter associated with the second downlink signal resource in the first precoding restriction information to zero; or if the first cooperative resource set does not contain a second downlink signal resource, set the parameter associated with the second downlink signal resource in the first precoding restriction information to zero; wherein the first parameter includes the second downlink signal resource.

34. The apparatus of claim 31, wherein, The processing module is configured to at least one of: determine a basis vector or a basis vector set associated with the transmission direction configuration information based on second association relationship information, and determine the first precoding restriction information based on the basis vector or the basis vector set; determine the precoding restriction information associated with the transmission direction configuration information as the first precoding restriction information based on second association relationship information; determine cooperative resource set configuration information associated with the transmission direction configuration information based on second association relationship information, and determine the first precoded restriction information based on the cooperative resource set configuration information; determine second information associated with the transmission direction configuration information based on second association relationship information, and determine the first pre-coding restriction information based on the second information.

35. A device for determining precoding restriction information, comprising: a communication module configured to send fifth information, the fifth information being used to indicate first precoding restriction information, and the fifth information being at least one of the following: first information, second information, and third information; wherein the first information is used to indicate a plurality of precoding restriction information; the second information is used to indicate first association relationship information between a first parameter and a basis vector, and the first parameter includes one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP combination, and a cell; and the third information is used to indicate transmission direction configuration information of a network side device.

36. The device of claim 35, wherein the first information is used to indicate the first precoding restriction information corresponding to a TRP combination;or the first information is used to indicate common precoding restriction information and dedicated precoding restriction information corresponding to the TRP combination, and the first precoding restriction information is obtained based on the common precoding constraint information and the dedicated precoding constraint information.

37. The apparatus of claim 35, wherein, The second information includes at least one of: a first set, each element in the first set being used to indicate the first parameter and the basis vector associated with the first parameter; a first sequence, each element in the first sequence being used to indicate the basis vector; a second sequence, each element in the second sequence being used to indicate the first parameter; the first association information between the first parameter and the basis vector.

38. The apparatus of claim 35, wherein, The third information further includes second association information, and the second association information includes at least one of the following: an association relationship between the transmission direction configuration information and a basis vector or a basis vector set; an association relationship between the transmission direction configuration information and precoding restriction information; an association relationship between the transmission direction configuration information and cooperation resource set configuration information; an association relationship between the transmission direction configuration information and second information, used to indicate at least one of the following: a first set corresponding to the transmission direction configuration information; a first sequence corresponding to the transmission direction configuration information; a second sequence corresponding to the transmission direction configuration information; third association information corresponding to the transmission direction configuration information, the third association information being an association relationship between a first parameter and a basis vector. Each element in the first set is used to indicate a first parameter and a basis vector associated with the first parameter; each element in the first sequence is used to indicate a basis vector; each element in the second sequence is used to indicate a first parameter; and the first parameter includes one of the following: a downlink signal resource, a downlink signal resource set, a TRP, a TRP group, and a cell. 39.A terminal comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the method according to any one of claims 1 to 21. 40.A network side device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement steps of the method according to any one of claims 22 to 30. 41.A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions being executed by a processor to implement the method according to any one of claims 1 to 21, or to implement steps of the method according to any one of claims 22 to 30.

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