Information sending method and apparatus, information reception method and apparatus, and device

Abstract

The present application belongs to the technical field of communications. Disclosed are an information sending method and apparatus, an information reception method and apparatus, and a device. The information sending method in the embodiments of the present application comprises: a network side device performing first channel measurement on a first signal sent by a terminal, so as to obtain first target information; and the network side device sending the first target information to the terminal, wherein the first target information is information related to a first area, and the first area is a partial area of an antenna array of at least one of the network side device and the terminal.

Description

Information transmission methods, information reception methods, devices and equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411024971X, filed on July 29, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to an information transmission method, an information reception method, an apparatus, and a device. Background Technology

[0004] In related technologies, due to the large array size of antenna arrays in communication equipment, different propagation paths exist in different areas of the array, resulting in spatially non-stationary channel characteristics. For an antenna array, signals reflected (or scattered) by certain reflectors (or scatterers) in the environment can only be received by antennas within a certain local area of ​​the array; conversely, only signals transmitted by antennas within a certain local area of ​​the array can be reflected (or scattered) by certain reflectors (or scatterers) in the environment. This local area is called the visible area. However, if the spatial non-stationary characteristics are not considered, and communication equipment transmits or receives signals through the entire antenna array, it will lead to high power consumption. Summary of the Invention

[0005] This application provides an information sending method, an information receiving method, an apparatus, and a device that can solve the problem of high power consumption in devices.

[0006] Firstly, a method for sending information is provided, the method comprising:

[0007] The network-side equipment performs a first channel measurement on the first signal sent by the terminal to obtain the first target information;

[0008] The network-side device sends the first target information to the terminal;

[0009] The first target information is related information of a first region, which is a portion of the antenna array of at least one of the network-side device and the terminal.

[0010] Secondly, an information receiving method is provided, the method comprising:

[0011] The terminal sends the first signal;

[0012] The terminal receives first target information sent by the network-side device. The first target information is related to a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0013] Thirdly, an information transmission device is provided, comprising:

[0014] The receiving module is used to perform a first channel measurement on the first signal sent by the terminal to obtain the first target information;

[0015] The sending module is used to send the first target information to the terminal;

[0016] The first target information is related information of a first region, which is a portion of the antenna array of at least one of the network-side device and the terminal.

[0017] Fourthly, an information receiving device is provided, comprising:

[0018] The transmitting module is used to transmit the first signal;

[0019] A receiving module is configured to receive first target information sent by a network-side device, wherein the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0020] Fifthly, an information transmitting apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect.

[0021] In a sixth aspect, an information receiving apparatus is provided, the apparatus being configured to perform the steps of the method described in the second aspect.

[0022] In a seventh aspect, 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 first aspect.

[0023] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein...

[0024] A communication interface is used to perform a first channel measurement on a first signal sent by the terminal to obtain first target information;

[0025] The communication interface is also used to send the first target information to the terminal;

[0026] The first target information is related information of a first region, which is a portion of the antenna array of at least one of the network-side device and the terminal.

[0027] In a ninth 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 second aspect.

[0028] In a tenth aspect, a terminal is provided, including a processor and a communication interface, wherein,

[0029] A communication interface used to send the first signal;

[0030] The communication interface is also used to receive first target information sent by a network-side device, wherein the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0031] Eleventhly, 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.

[0032] In a twelfth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method described in the first aspect, and the network-side device is configured to perform the steps of the method described in the second aspect.

[0033] In a thirteenth 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.

[0034] In a fourteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being 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.

[0035] In this embodiment of the application, the network-side device sends the first target information to the terminal; the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal. In this way, signals can be transmitted or received through the first region, thereby reducing the power consumption of the device. Attached Figure Description

[0036] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0037] Figure 2a is a schematic diagram of near-field spherical wave and far-field plane wave propagation provided in an embodiment of this application;

[0038] Figure 2b is a schematic diagram of spatial nonstationarity provided in an embodiment of this application;

[0039] Figure 3 is a flowchart of an information sending method provided in an embodiment of this application;

[0040] Figure 4 is a schematic diagram of one of the basic units provided in the embodiments of this application;

[0041] Figure 5 is a schematic diagram of a basic unit provided in an embodiment of this application;

[0042] Figure 6 is a flowchart of an information receiving method provided in an embodiment of this application;

[0043] Figure 7 is a schematic diagram of the structure of an information transmission device provided in an embodiment of this application;

[0044] Figure 8 is a schematic diagram of the structure of an information receiving device provided in an embodiment of this application;

[0045] Figure 9 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0046] Figure 10 is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0047] Figure 11 is a schematic diagram of the structure of a network-side device provided in an embodiment of this application;

[0048] Figure 12 is a second schematic diagram of the structure of a network-side device provided in an embodiment of this application. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may 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 any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0054] 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.

[0055] 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).

[0056] For ease of understanding, the following explains some aspects of the embodiments of this application:

[0057] 1. Spherical wave propagation and spatial nonstationarity

[0058] In 5G NR systems, User Equipment (UE, i.e., the terminal) is always considered to be in the far-field region of the base station. In this case, signal propagation between the base station and the UE can be approximated using a plane wave model. As shown in Figure 2a, in the plane wave model, the propagation paths between each antenna of the base station and the UE or reflector (or scatterer) are parallel. Therefore, the phase difference of the propagation paths between each antenna and the UE / reflector (or scatterer) is determined only by the antenna array geometry. Based on the plane wave model, the beam angle of the base station can be controlled by controlling the phase difference between the various antennas of the base station.

[0059] In the near-field region, the propagation paths from the base station's individual antennas to the UE / reflector (or scatterer) can no longer be considered parallel and need to be modeled using spherical waves. Near-field communication differs from far-field communication in several ways. First, the phase of the received signal varies non-linearly across the entire array. In the far-field condition, the phase of the array steering vector scales approximately linearly with respect to different elements, making mathematical analysis easier. However, this property does not hold true in the near-field. Second, as the array aperture increases, the amplitude / path loss variation across the entire array needs to be considered. This is because the distance between the user and the array center may differ significantly from the distance between the user and the array edge. Third, in the near-field, the tilt angle of the incident wave changes considerably from the array center to the edge, causing variations in the effective projected aperture of different antennas on the array.

[0060] Another change in the 6G wireless channel model lies in the spatial non-stationarity of the channel. Due to the large size of the antenna array, different regions of the array have different propagation paths, resulting in spatial non-stationarity of the channel. For a large-scale antenna array, signals reflected (or scattered) by certain reflectors (or scatterers) in the environment can only be received by antennas within a specific local area of ​​the array. Conversely, only signals transmitted by antennas within a specific local area of ​​the array can be reflected (or scattered) by certain reflectors (or scatterers) in the environment. Correspondingly, this local area is called the visible area (of the multipath on the array). As shown in Figure 2b, the visible area of ​​"far-field cluster 1" is "visible area 1," and the visible area of ​​"near-field cluster 1" is "visible area 2." It should be noted that, for clarity, Figure 2b only shows clusters whose visible area (or length) is smaller than the entire array of the base station (BS). In real-world environments, there are also reflectors (or scatterers) whose visible area encompasses the entire array.

[0061] 2. Channel model and codebook feedback for near-field MIMO

[0062] References [1]: Z. Yuan, J. Zhang, etc. "Spatial non-stationary near-field channel modeling and validation for massive mimo systems," IEEE Transactions on antennas and propagation, vol.71, no.1, Jan.2023.

[0063] Reference [1] presents a channel modeling method that considers near-field spherical waves and spatial non-stationary characteristics. It is assumed that the wireless channel contains K transmission paths, and the wireless channel is represented as the superposition of the channel frequency responses (CFRs) of the K transmission paths at frequency f. Near-field characteristic parameter A and spatial non-stationary parameter S are introduced to represent the near-field spatial non-stationary channel, as follows:

[0064] in Given an M*N matrix, the system operating frequency band f∈[f L ,f U], ⊙ represents the elementwise product operation. A(θ,φ,d) represents the spherical wave correction model, where the parameters θ,φ,d represent the vertical angle, horizontal angle, and distance of the scatterer in the local coordinate system of the antenna array relative to the reference point / origin of the local coordinate system of the antenna array (e.g., the center point of the antenna array, or the upper left corner, etc.). This represents a plane wave model. Note that the channel model above assumes that one side of the wireless channel is a near-field spherical wave, spatially non-stationary, and the other side is a far-field plane wave, spatially stationary. For example, a near-field, spatially non-stationary model is used for a larger base station antenna array, while a far-field, spatially stationary model is used for a smaller terminal antenna array. If both sides are near-field spherical wave models, then it is necessary to... Revised to

[0065] For a communication system at frequency f, the plane wave channel H(α,τ,θ,φ) consisting of K paths is represented as:

[0066] Where {α k ,τ k} represents the amplitude and transmission delay of the k-th path. This represents the difference between the spherical wave model and the plane wave propagation model, where element a... m,k This represents the correction value for the spherical wave model of the k-th transmission path on the m-th antenna of the base station.

[0067] Where d k This represents the vector from the base station antenna array reference point (e.g., the center point of the array) to the scatterer k (it can be understood that the kth transmission path is generated by scattering / refracting / reflection by the scatterer k).

[0068] Where {θ k ,φ k} represents the vertical and horizontal angles of the k-th path relative to the normal of the array surface at the reference point.

[0069] Vector d m,k =d k -d m Let d be the vector of the scatterer from the m-th antenna to the k-th transmission path, where d m This represents the vector from the m-th antenna to the reference point of the antenna array.

[0070] Matrix S is used to represent the spatial non-stationary characteristics of K transmission paths, S = [s1, ..., s2]. k ,…,s K ] s k =[s 1,k,…,s m,k ,…,s M,k ] T

[0071] Where s m,k This represents the visibility of the m-th antenna to the k-th transmission path.

[0072] matrix The receiver modeling for N antennas is similar to that of A(θ,φ,d). For ordinary terminals, near-field spherical waves and spatial non-stationary characteristics can be ignored, so the parameter d and matrix S are omitted.

[0073] Based on the channel model described above, the end-to-end received signal can be expressed as Y = H. sns WX

[0074] After reconstructing the expression based on spatial nonstationarity

[0075] This means that for spatially non-stationary channels, the precoding vector W can be reconstructed / feedback transmitted based on the spatial non-stationary characteristics. For example, for ZF (zero forcing), R represents the receiver matrix on the terminal side.

[0076] Furthermore, in real-world channels, propagation scenarios may involve a mixture of near-field and far-field transmission paths, and the energy of each of the K transmission paths is different. Therefore, a few high-energy spatially non-stationary paths can be selected for individual feedback based on their spatial non-stationary characteristics, while the other paths are treated as a whole and fed back using existing methods.

[0077] in G represents the set of spatially non-stationary transport paths with relatively high energy (or exceeding a threshold). Superimposed responses outside the transmission path. For the terminal's antenna array, if the terminal antenna array exhibits spatial non-stationary characteristics, then the signal energy of some terminal antennas will be relatively strong. Therefore, based on the spatial non-stationary characteristics, the terminal antennas within the line of sight can be selected for uplink measurement or uplink transmission, reducing the complexity of antenna switching and resource consumption.

[0078] 3. Antenna switching (antenna rotation)

[0079] For an explanation of antenna switching (also known as antenna rotation) related to the Sounding Reference Signal (SRS), please refer to the relevant descriptions in the 3GPP protocol. Considering the antenna cost of the terminal and uplink rate requirements, the number of transmitting antennas of a UE is generally less than the number of receiving antennas. Furthermore, due to limitations in the UE's transmit capability, even with a sufficient number of available receiving antennas, it is impossible to transmit the SRS on all receiving antennas at once. Therefore, antenna switching must be used to transmit the SRS on all receiving antenna ports. When the usage in the UE's higher-layer parameter SRS-ResourceSet is configured as "antennaSwitching", the UE's antenna switching capability information can be configured through the supportedSRS-TxPortSwitch parameter.

[0080] 4. Definitions

[0081] Explanation 1: First Measured Quantity

[0082] The first measurement, namely the measurement related to communication services, includes at least one of the following:

[0083] The received power of the first signal at at least one port;

[0084] The received strength (amplitude or power) of the first signal at at least one port, or the Received Signal Strength Indicator (RSSI);

[0085] The reception quality indication of the first signal at at least one port, or the received signal-to-noise ratio (SNR) or signal-to-interference-plus-noise ratio (SINR) of the reflected signal from the sensing target or sensing area;

[0086] Bit Error Rate (BER) or Block Error Ratio (BLER) for communication using the first signal of at least one port;

[0087] Use a communication precoding matrix indicator (PMI) with at least one port;

[0088] At least one port's Channel Quality Indicator (CQI);

[0089] Use a communication channel rank indicator (RI) with at least one port;

[0090] Spectral efficiency of communication using a first signal with at least one port;

[0091] Transmission capacity for communication using the first signal of at least one port.

[0092] Explanation 2: Second measurement quantity

[0093] The second measurement includes channel parameter information obtained by channel estimation or parameter estimation based on channel estimation, and channel multipath parameter information, specifically including at least one of the following:

[0094] Channel estimation matrix (or channel state information matrix, or channel transfer function matrix);

[0095] The covariance matrix or correlation matrix of the channel estimation matrix;

[0096] Index information for channel multipath;

[0097] The complex amplitude of channel multipath includes both amplitude and phase;

[0098] Multipath delay;

[0099] The angle of multipath includes at least one of the following: Azimuth of Arrival (AOA), Azimuth of Departure (AOD), Elevation of Arrival (EOA), and Elevation of Departure (EOD);

[0100] Multipath and near / far field information of the visible area, which indicates the near / far field relationship of the multipath within its visible area (i.e., whether it is near or far field relative to the subarray set corresponding to the visible area); for example, using 1 bit information, "1" indicates near field and "0" indicates far field;

[0101] First-hop cluster / path / subpath distance (FBCD) can be the distance between the reflection (or scattering) point of the first hop of the multipath and the reference point of the entire array at the transmitter (e.g., the first antenna element of the entire array), or the distance between the reflection (or scattering) point of the first hop of the multipath and the reference point of the corresponding subarray set in the visible area of ​​the transmitter (e.g., the first antenna element of subarray 1 in the subarray set).

[0102] Last Bounce Cluster / Path / Subpath Distance (LBCD) can be the distance between the reflection (or scattering) point of the last hop of the multipath and the reference point of the entire array at the receiver (e.g., the first antenna element of the entire array), or the distance between the reflection (or scattering) point of the last hop of the multipath and the reference point of the corresponding subarray set in the visible area of ​​the receiver (e.g., the first antenna element of subarray 1 in the subarray set).

[0103] Channel power domain parameters include at least one of the following: path loss, shadowing fading, average power, Rician K factor, and polarization crossover ratio;

[0104] Channel delay domain parameters include at least one of the following: average delay spread, root mean square delay spread, and coherence bandwidth;

[0105] Channel Doppler domain parameters include at least one of the following: average Doppler frequency shift, root mean square Doppler spread, and coherence time;

[0106] Channel directivity parameters include at least one of the following: transmitter-side direction spread, receiver-side direction spread, global departure azimuth spread, global departure elevation spread, global arrival azimuth spread, and global arrival elevation spread;

[0107] Multipath or multipath cluster parameters include at least one of the following: number of clusters, average number of sub-paths within a cluster, cluster delay spread, cluster departure azimuth spread, cluster departure pitch spread, cluster arrival azimuth spread, and cluster arrival pitch spread. It should be noted that the terms "multipath", "path", "multipath cluster", and "cluster" have the same meaning.

[0108] The channel eigenvalue class parameters include at least one of the following: channel eigenvalue, channel eigenvalue extension, ratio of the maximum to the minimum eigenvalue of the channel, channel eigenvector, channel singular value, channel singular value extension, ratio of the maximum to the minimum singular value of the channel, and channel singular vector; wherein, the channel eigenvalue and eigenvector are obtained by eigenvalue decomposition (EVD) of the channel matrix covariance matrix or correlation matrix; and the channel singular value and singular vector are obtained by singular value decomposition (SVD) of the channel matrix.

[0109] Explanation 3: Parameter Configuration Information

[0110] The parameter configuration information includes at least one of the following:

[0111] Waveform types, such as Orthogonal Frequency Division Multiplexing (OFDM), Single-carrier Frequency-Division Multiple Access (SC-FDMA), OTFS, Frequency Modulated Continuous Wave (FMCW), pulse signals, etc.

[0112] Subcarrier spacing: For example, the subcarrier spacing of an OFDM system is 30 kHz;

[0113] Guard interval: The time interval between the end of signal transmission and the latest echo signal of that signal being received; this parameter is proportional to the maximum sensing distance; for example, it can be expressed as 2d. max / c is calculated to obtain d max This refers to the maximum sensing distance (related to sensing requirements), for example, for spontaneously generated and received sensing signals / reference signals, d max It represents the maximum distance from the signal transceiver point to the signal transmitter point; in some cases, the OFDM signal cyclic prefix CP can serve as the minimum guard interval.

[0114] Bandwidth: This parameter is inversely proportional to the distance resolution and can be obtained by c / (2Δd), where Δd is the distance resolution (related to perception requirements); and c is the speed of light.

[0115] Burst duration: This parameter is inversely proportional to the rate resolution (related to sensing requirements). It represents the time span of the signal and is primarily used to calculate the Doppler frequency offset. This parameter can be obtained by c / (2f c Δv) is calculated; where Δv is the velocity resolution; f c It is the carrier frequency of the signal;

[0116] Time domain interval: This parameter can be obtained by c / (2f) c v range ) is calculated; where, v range It is the maximum speed minus the minimum speed (related to sensing requirements); this parameter is the time interval between two adjacent signals;

[0117] Transmitted signal power, for example, taking a value every 2dBm from -20dBm to 23dBm;

[0118] Signal format, such as SRS, DMRS, PRS, or other predefined signals, and related sequence format information;

[0119] Signal direction; for example, the direction of the sensed signal / reference signal or beam information;

[0120] Time resources, such as the time slot index or symbol index of the time slot where the sensing signal / reference signal is located; among them, time resources are divided into two types: one is one-time time resources, such as one symbol sending an omnidirectional signal; the other is non-one-time time resources, such as multiple sets of periodic time resources or discontinuous time resources (which may include start and end times), each set of periodic time resources sends a signal in the same direction, and the beam direction on different sets of periodic time resources is different.

[0121] Frequency resources include the center frequency of the signal, bandwidth, resource block (RB) or subcarrier, point A, starting bandwidth position, etc.

[0122] Quasi-co-location (QCL) relationships, for example, a sensing signal includes multiple resources, each resource is associated with a Synchronization Signal Block (SSB) QCL, and the QCL includes Type A, B, C or D;

[0123] Antenna configuration information.

[0124] The antenna configuration information includes at least one of the following:

[0125] Antenna element index or antenna port index used for transmitting and / or receiving sensed signals / reference signals;

[0126] Panel + element index for transmitting and / or receiving sensed signals / reference signals;

[0127] The position information of the antenna elements relative to a local reference point on the antenna array used to transmit and / or receive sensed signals / reference signals (can be in Cartesian coordinates (x, y, z) or spherical coordinates). express);

[0128] The panel used to transmit and / or receive sensed / reference signals has its position information relative to a local reference point on the antenna array (which can be in Cartesian coordinates (x, y, z) or spherical coordinates). (represented), and the position information of the antenna elements within these selected panels used to transmit sensing signals relative to a unified reference point of the panel (e.g., the center point of the panel) (which can be expressed in Cartesian coordinates (x, y, z) or spherical coordinates). express);

[0129] The bitmap information of the antenna elements. For example, the bitmap uses "1" to indicate that the element is selected for transmitting and / or receiving sensing / reference signals, and "0" to indicate that the element is not selected; or it uses "0" to indicate that the element is selected and "1" to indicate that the element is not selected.

[0130] The bitmap information of the array panel. For example, the bitmap uses "1" to indicate that the panel is selected for transmitting and / or receiving sensing / reference signals, and "0" to indicate that the array element is not selected; or it uses "0" to indicate that the array element is selected and "1" to indicate that the array element is not selected. And the bitmap information of the array elements within these selected panels;

[0131] Antenna element amplitude and phase gain information, i.e. antenna element pattern information.

[0132] The following description, in conjunction with the accompanying drawings, details the information sending method, information receiving method, apparatus, and related equipment provided in this application through some embodiments and application scenarios.

[0133] Referring to Figure 3, which is a flowchart of an information sending method provided in an embodiment of this application, the information sending method includes the following steps:

[0134] Step 101: The network-side device performs a first channel measurement on the first signal sent by the terminal to obtain the first target information;

[0135] Step 102: The network-side device sends the first target information to the terminal; the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0136] From the perspective of the spatial non-stationary characteristics of wireless channels, the first region can be understood as the visible region corresponding to the spatial non-stationary characteristics. That is, for the signal energy of a transmission path with spatial non-stationary characteristics, for the transmitting end, most of the signal energy comes from the antenna transmission within the visible region; for the receiving end, most of the signal energy comes from the antenna reception within the visible region.

[0137] In one embodiment, the first region may be the visible area of ​​the channel on the antenna array of at least one of the terminal and the network-side device.

[0138] In one embodiment, the first region can be a non-visible area of ​​the channel on the antenna array of at least one of the terminal and the network-side device, through which the visible area of ​​the antenna array can be determined.

[0139] It can be understood that, physically, the first region corresponds to a set / subset of antenna elements in an antenna array; logically, in a communication system, the first region corresponds to a set / subset of antenna ports in a set of antenna ports. Each transmission path in a wireless channel may have independent spatial non-stationary characteristics; that is, the network-side device performing the first channel measurement may obtain one or more different first regions, corresponding to one or more different spatial non-stationary transmission paths.

[0140] It is understandable that a spatially stationary transmission path can be regarded as a special case of spatial non-stationarity. In this case, the first region / visible region includes the entire region of the antenna array, or corresponds to the complete set of antenna elements of the antenna array, or corresponds to the complete set of antenna ports.

[0141] It is understandable that the spatial non-stationary characteristics of wireless channels are related to the area of ​​the antenna array, the operating frequency band, and the physical environment. Generally, the antenna array area of ​​network-side devices is larger than that of terminal-side devices; therefore, the spatial non-stationary characteristics of network-side devices are more likely to occur in communication scenarios. In some embodiments described in this paper, it is assumed that the first region is the visible area of ​​the network-side device.

[0142] In one implementation, the first region may be a subset of the antenna port set of at least one of the network-side devices and the terminal.

[0143] In one implementation, the first region corresponds to a set of ports.

[0144] The first target information can be used to perform a target operation; the target operation includes at least one of the following: a communication transmission operation; and a second channel measurement.

[0145] The term "first channel measurement" can also be expressed as "channel measurement." The terms "first" and "second" in "first channel measurement" and "second channel measurement" are used only to distinguish between the two channel measurements. The first channel measurement can refer to uplink channel measurement, and the second channel measurement can refer to uplink channel measurement.

[0146] It should be noted that when performing the first channel measurement, the terminal uses all antenna ports to transmit the first signal; while when performing the second channel measurement, the terminal uses the antenna port / physical antenna corresponding to the first area to transmit the second signal to avoid energy waste; optionally, the terminal uses communication precoding / beamforming to transmit the second signal based on the antenna port / physical antenna corresponding to the first area.

[0147] Furthermore, the purpose of the first channel measurement is to determine the visible area (such as the first area) of the network-side equipment and / or terminal; the purpose of the second channel measurement is to obtain the channel estimate corresponding to the first area as required for subsequent communication services. The signal direction of the first channel measurement is sent by the terminal and received by the network-side equipment; the signal direction of the second channel measurement can be sent by the terminal and received by the network-side equipment, or it can be sent by the network-side equipment and received by the terminal.

[0148] In one embodiment, after the network-side device performs a first channel measurement and obtains first target information, it can perform a communication transmission operation based on the first target information. Specifically, the terminal determines the precoding vector or precoding matrix to be used when communicating with the network-side device based on the first target information. The first target information includes a set of precoding codewords and one or more first regions, and the first regions are associated with one or more precoding codewords in the set of precoding codewords.

[0149] In one embodiment, after the network-side device performs a first channel measurement to obtain first target information, it can then perform a second channel measurement based on the first target information. Specifically, the terminal determines a subset of its antennas or antenna ports based on the first target information, which are used by the terminal in power-saving mode. The network-side device performs a second channel measurement on the reference signals transmitted by the subset of antennas or antenna ports to obtain and feed back channel state information.

[0150] In one embodiment, after the network-side device performs a first channel measurement and obtains first target information, it can transmit a second signal for a second channel measurement. Specifically, the network-side device determines a first region of itself through the first channel measurement; the network-side device transmits a second signal, such as SRS or PRACH, at the antenna port of the first region; and the terminal receives the second signal to determine the Channel Information (CSI) under spatial non-stationary conditions of the network-side device (e.g., determining the downlink beamforming vector under spatial non-stationary conditions based on channel reciprocity).

[0151] In this embodiment, the network-side device or terminal can perform communication transmission operations through the visible area, taking into account the spatial non-stationarity of the channel, thereby improving transmission performance and reducing power consumption; or, it can perform channel measurement operations through the visible area, taking into account the spatial non-stationarity of the channel, thereby improving measurement accuracy and reducing power consumption.

[0152] Optionally, the first target information includes at least one of the following:

[0153] First information, which is used to characterize the shape of the first region;

[0154] The second information is used to characterize the physical location of the units constituting the first region;

[0155] The third information is used to characterize the transformation relationship between the units constituting the first region and the basic units;

[0156] The fourth information is used to identify the first region;

[0157] The fifth piece of information is the pre-coded information used by the terminal for communication transmission;

[0158] The relationship between the fourth information and the fifth information.

[0159] The first information can be used to describe the shape of the first region. This embodiment does not limit the specific form of the first information. It can be understood that the first region can be the visible area of ​​a scatterer or its corresponding propagation path, that is, the area in the antenna array where the signal energy is relatively strong from the corresponding propagation path of the scatterer. For example, most of the energy of the path of the scatterer is contributed by the signal from the antenna port within the first region; or, the first region can be a non-visible area of ​​a scatterer or its corresponding propagation path, equivalent to a complementary region to the visible area.

[0160] The shape representation of the first region can be: a bitmap-based representation (where "1" represents the area within the first region and "0" represents the area outside the first region; each bit in the bitmap can represent an antenna element, an antenna port, or an antenna subarray; the granularity of the antenna array represented by the information bits is predefined by the protocol or configured by the network); or a direct description of a single pattern (assuming the visible area is a rectangle, with horizontal and vertical lengths, and horizontal and vertical offsets equivalent to an array reference point; the reference point can be the upper left antenna element); or a combined description of multiple patterns (the combination of multiple pattern information constitutes the first region; each pattern information includes the index of the basic unit / basic shape, the horizontal and vertical offsets of the basic unit, and the transformation / rotation / scaling parameters of the basic unit). It should be noted that the physical meaning of the first region can be a visible or non-visual area. It can be predefined by the protocol, with the first region being a visible area by default; it can also be configured by the network as either a visible or non-visual area; or, based on the first channel measurement results, the terminal can choose to feed back the first region as either a visible or non-visual area, feeding back both the shape and meaning of the first region.

[0161] Optionally, the first information includes a first index, which is an index of one or more basic units associated with the first region.

[0162] The first region may be composed of target units, which may be basic units, or the target units may have a transformation relationship with the basic units. When the target unit is a basic unit, the first index may be the index of the basic unit; when the target unit and the basic unit have a transformation relationship, the first index may be the index of the basic unit that has a transformation relationship with the target unit.

[0163] In this embodiment, the first information includes a first index, which is an index of the basic units associated with the first region. The basic units associated with the first region can be quickly determined through the first index, thereby revealing which basic units constitute the first region.

[0164] In one implementation, the first information can be a first parameter, which can be a first index or a combination of first indices; or, descriptive information about the basic features of the shape of the first region (e.g., the length and width of a rectangle). The smallest descriptive granularity of the shape of the first region can be an antenna element, an antenna port, or an antenna subarray, for example, a subarray composed of several adjacent antenna elements or ports, and the subarray division method can be configured by the base station or predefined by the protocol.

[0165] In one implementation, the first index can be understood as the first index, i.e., the index of the basic unit, which is used to describe the visible area on the antenna array of at least one of the network-side device and the terminal device for the channel or channel multipath.

[0166] Optionally, the basic unit includes at least one of the following:

[0167] (1) First unit: A rectangular unit used to describe the corresponding two-dimensional visible area on a two-dimensional antenna array. For example, “2×2” can be used to represent a subarray of the first signal transmitting array or receiving array whose visible area of ​​the channel or channel multipath covers the first signal transmitting array or receiving array, and the subarray is composed of two rows and two columns of antenna elements or two rows and two columns of subarrays. It can be understood that the subarray corresponding to the visible area further contains multiple smaller subarrays; or, for example, “N×M” can be used to represent a subarray of the first signal transmitting array or receiving array whose visible area of ​​the channel or channel multipath covers the first signal transmitting array or receiving array, and the subarray is composed of N rows and M columns of antenna elements or N rows and M columns of subarrays.

[0168] (2) Second unit: A linear unit used to describe the corresponding one-dimensional visible area on the one-dimensional antenna array region. For example, "1×2" can be used to represent a subarray of the first signal transmitting array or receiving array whose visible area of ​​the channel or channel multipath covers the first signal transmitting array or receiving array, and the subarray consists of one row of two columns of antenna elements or one row of two columns of subarrays. It can be understood that the linear region of the second unit can be regarded as a special case of the rectangular region of the first unit.

[0169] It should be noted that if an antenna port is connected to a set of physical antenna elements (hereinafter collectively referred to as subarrays), then the visible area described by the basic unit is the area corresponding to the set of physical antenna elements or subarrays connected to the antenna port in the corresponding dimension.

[0170] Specifically, Figure 4 shows several typical examples of basic units and examples of the first index values ​​corresponding to these typical basic units. It should be noted that the types of basic units are not limited to those listed in Figure 4, and may include many more basic units of different shapes. In this embodiment, the first index is used to establish an association between predefined or preconfigured basic units and the first region, and the shape of the first region is indicated by sending first target information. For example, the first region may consist of one or more basic units corresponding to the first index.

[0171] The units constituting the first region may include basic units or units that have a transformation relationship with basic units. The units constituting the first region may be called target units. A target unit may be the basic unit corresponding to the first index, or a target unit may be a unit that has a transformation relationship with the basic unit corresponding to the first index; or, the target unit may be predefined or preconfigured through a protocol.

[0172] The second information is used to characterize the physical location of the unit constituting the first region. In one embodiment, the method for characterizing the physical location of the unit constituting the first region can be based on a reference point and an offset to jointly characterize the physical location of the basic unit: the reference point can be any physical location specified by the antenna array, or a physical antenna location, or an antenna port location (e.g., the geometric center of the antenna array panel, or the physical antenna location at the lower left corner of the antenna array, or the port location at the lower left corner of the port array corresponding to the antenna port); the offset can be represented by a combination of the geometric distance from the reference point, or the physical antenna spacing and the physical antenna index.

[0173] The physical location of the unit constituting the first region can refer to the physical location on the panel of the antenna array, or the location in the port array corresponding to the antenna port.

[0174] Optionally, the second information includes a second index, which indicates the physical location or logical location of the target unit in the terminal antenna array. The target unit is the basic unit corresponding to the first index, or the target unit is a unit that has a transformation relationship with the basic unit corresponding to the first index. The target unit is used to constitute the first region.

[0175] In this embodiment, the target unit is indicated by the second index at the physical location or logical location of the antenna port of the terminal antenna array. The actual physical location of the target unit in the antenna array can be quickly determined by the second index, thereby obtaining the physical location information of the target unit constituting the first region.

[0176] In one implementation, the second information can be a second index. The second index can be understood as a location index of the basic unit (or, more specifically, an index of the physical antenna or subarray reference point of the basic unit), used to indicate the physical location of the visible area corresponding to the first index within the first signal transmitting array (or receiving array). That is, the second index indicates the correspondence between any pre-specified antenna port within the visible area corresponding to the basic unit and the physical antenna elements or subarrays of the actual physical antenna array (including the transmitting array and receiving array). The subarray reference point can be any one physical antenna specified on the subarray.

[0177] It should be noted that the second index can be understood as the position index of the physical antenna element or subarray, which is bound to the position of the physical antenna element or subarray. Knowing the second index, the physical antenna element or subarray corresponding to the basic unit and other related first target information content can be determined.

[0178] The following example illustrates the second index: Assume the transmitting array (and the receiving array similarly) has a total of 32 physical antenna elements, arranged in a 4x8 array. As shown in Figure 5, each square represents one physical antenna element (or one subarray), and the numerical index on it indicates the physical antenna (or subarray) index. If the physical location of a basic unit is represented by the position of the top-left element of the visible area corresponding to the basic unit (or by the position of the first element on the left if it is a line unit), then the second index value of a "2×2" rectangular unit (assuming its first index value is 4) is 1; the second index value of a "2×3" rectangular unit (assuming its first index value is 7) is 12; and the second index value of a "1×3" rectangular unit (assuming its first index value is 8) is 30. Since there is a one-to-one mapping relationship between the physical antenna (or subarray) index and the physical antenna (or subarray) (position coordinates), by indicating the first index {4,7,8} and the second index {1,12,30} of the corresponding basic unit, the network-side device or terminal can obtain the specific physical location of the channel multipath or the visible area of ​​the channel of the transmitting array (the same applies to the receiving array).

[0179] It is understandable that the shape and position of a first region can be determined using the first parameter and the second index, but it is not limited to this method. Other methods can also be used to determine the first region: for example, a bitmap can be used to describe the first region. When the number of antennas or antenna subarrays is relatively small, a bitmap can be used to efficiently describe the first region.

[0180] The third information can be a third index, used to indicate the rotation state of the associated basic unit, or to indicate the horizontal or vertical flip state of the basic unit (flipping refers to the flipping of the geometry of the basic unit). Table 1 gives an example of an optional third index value and its association with the rotation or flip state of the basic unit.

[0181] Table 1

[0182] The fourth information can be an index, bitmap information, or visible area description information, etc. This embodiment does not limit the specific form of the fourth information.

[0183] Optionally, the first target information includes the fourth information, which includes one or more fourth indices, each of which corresponds to a first region, and the first region is determined by at least one of the first information, the second information, the third information, and the fifth information.

[0184] In one embodiment, the first target information includes the fourth information, and the fourth information includes one or more indexes of the first region;

[0185] The first target information also includes at least one of the following:

[0186] The first information corresponding to the index of each of the first regions;

[0187] The second information corresponding to each index of the first region;

[0188] The third information corresponding to each index of the first region;

[0189] The fifth information corresponding to each index of the first region.

[0190] Among them, different first regions can correspond to different first, second, third, or fifth information.

[0191] For example, the fourth information includes the index of the first region A and the index of the second region B, and the first target information further includes: first information, second information, third information or fifth information corresponding to the index of the first region A; and first information, second information, third information or fifth information corresponding to the index of the first region B.

[0192] In one embodiment, the fourth information can be a visible area index, used to distinguish the visible areas on the antenna array of at least one of the BS and UE for the channel (including one component or group of components in PMI) or channel multipath. Different fourth index values ​​correspond to different visible areas, that is, the fourth index values ​​are different for different visible areas.

[0193] It should be noted that the fourth index can be equivalent to the index of the first index set. It should also be pointed out that if one or more spatially discontinuous visible regions have the same fourth index value, then these one or more visible regions are considered to belong to the same visible region. In other words, the same visible region can be spatially discontinuous. For the same visible region, the channel parameters and multipath parameters of the corresponding channel are the same, or the corresponding precoding information is the same.

[0194] It should be noted that the fourth information can implicitly identify or indicate the first region. For example, when the first target information includes multiple first region information, the first target information includes at least one of the first, second, and third information, combined with at least one of the fifth, sixth, first measurement value, and second measurement value. One implementation is that the first target information can be a structure that arranges the above combinations in a certain order to represent / indicate multiple different first regions. In this form, not only is the first region implicitly indicated, but the association between the first region and the channel information (i.e., the fifth, sixth, first measurement value, and second measurement value, at least one) is also indicated (i.e., the seventh information).

[0195] The fifth information can be a vector or a vector index, etc. For example, the fifth information includes: a precoding matrix index (PMI) or a precoding vector merging coefficient index, etc. In one embodiment, the set of precoding vectors, i.e., the precoding codebook, is predefined by the protocol or pre-configured by the network-side device and informed to the terminal in advance. The network-side device feeds back the fifth information to the terminal, i.e., the precoding vector index, the precoding matrix index (PMI), the precoding vector merging coefficient index, etc. The terminal determines the precoding vector used for communication transmission through the predefined precoding codebook; or, the fifth information may include: a precoding vector (referring to directly transmitted precoding weights) or a precoding matrix (referring to directly transmitted precoding weights), etc. The fifth information can be the precoding information used by the terminal for communication transmission in the first area. In one embodiment, the fifth information can be a first vector, which is a vector calculated from at least one channel multipath complex amplitude measurement value in the second measurement quantity, and at least one multipath parameter information associated with them (including multipath delay, multipath angle, near and far field information, first hop or last hop multipath distance, etc.). Specifically, a set of steering vectors (at least one) is first calculated based on the parameter information of the at least one multipath, and then a first vector is obtained by weighted merging based on the complex amplitude of the at least one channel multipath; the first vector is the precoding vector used by the terminal for communication transmission.

[0196] The association between the fourth information and the fifth information can refer to the association (or mapping) between the fourth index and at least one vector in the fifth message. Alternatively, the association between the fourth information and the fifth information can refer to the association (or mapping) between the first vector and at least one fourth index.

[0197] By estimating the channel parameters at the receiver, the transmitter can obtain spatial non-stationary measured information about the channel at the receiver. This method has low overhead and enables the transmitter to fully utilize the diversity gain brought about by spatial non-stationarity, thereby achieving multi-stream transmission. It also avoids wasting transmit power and improves the overall transmission performance of the system.

[0198] In this embodiment, given the irregular visible area of ​​a non-stationary channel, a first signal transmitting node transmits a first signal. After performing channel measurements, a first signal receiving node determines a visible channel area (such as a first region) that constitutes at least one of the first signal transmitting node and the first signal receiving node. This visible area can be represented by predefined basic units or combinations thereof, or by a bit map or similar method. The first signal receiving node sends the aforementioned visible channel area information to the first signal transmitting node to determine at least one of the first signal transmitting node's transmit antenna port and precoding. The precoding of the first signal transmitting node is represented as a combination of the first region and a precoding vector. The relevant information of the basic unit includes at least the basic unit index and the association between the basic unit and the measured quantities of the channel measurement. The measured quantities of the channel measurement can include at least one of the following: large-scale channel parameters, small-scale parameters, and multipath parameters.

[0199] For the sake of simplicity and clarity in describing the embodiments of this application, the path or cluster of a wireless channel, including subpaths within a cluster, will be collectively referred to as "multipath".

[0200] Additionally, the wireless signal used for channel estimation, channel measurement, or sensing measurement between the transmitter (or described as the transmitting node) and the receiver (or described as the receiving node) can be called the first signal. The first signal includes reference signals (such as synchronization signals and physical broadcast channel (PBCH block, SSB) signals, channel state information-reference signals (CSI-RS), demodulation reference signals (DMRS), sounding reference signals (SRS), positioning reference signals (PRS), phase tracking reference signals (PTRS), etc., or it can be the single-frequency continuous wave (CW), frequency-modulated continuous wave (FMCW), and ultra-wideband Gaussian pulse, etc., commonly used by radar). The signal carrying communication data between the transmitter and receiver can be called the second signal. The first signal transmitter can be a user equipment (UE, i.e., a terminal), and the first signal receiver can be a base station (BS) (including macro cell base stations, micro cell base stations, and indoor small base stations), or another UE. The channel from the UE to the BS is called the uplink channel; the channel from the BS to the UE is called the downlink channel.

[0201] In this embodiment of the application, the network-side device sends the first target information to the terminal; the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal. In this way, signals can be transmitted or received through the first region, thereby reducing the power consumption of the device.

[0202] Optionally, the first target information may further include at least one of the following:

[0203] First measurement quantity (or expressed as first measurement quantity value, or measurement value of first measurement quantity); Second measurement quantity (or expressed as second measurement quantity value, or measurement value of second measurement quantity); Sixth information; Second parameter configuration information; Relationship between first information and second information; Relationship between first information and third information; Relationship between first information and fourth information; Relationship between first information and at least one of the first measurement quantities; Relationship between first information and at least one of the second measurement quantities; Relationship between first information and at least one of the fifth information; Relationship between first information and at least one of the sixth information; Relationship between fourth information and at least one of the first measurement quantities; Relationship between fourth information and at least one of the second measurement quantities; Relationship between fourth information and at least one of the sixth information; Relationship between first information and parameter configuration information corresponding to the first channel measurement; Relationship between fourth information and parameter configuration information corresponding to the first channel measurement; Seventh information;

[0204] Wherein, the first measurement quantity is a measurement quantity related to communication services;

[0205] The second measurement includes channel parameter information obtained based on channel estimation;

[0206] The sixth piece of information is the precoded information used by the network-side device for communication transmission;

[0207] The second parameter configuration information is used for communication transmission operations or second channel measurements;

[0208] The seventh piece of information is used to characterize the association between the first region and the channel information.

[0209] The first measurement quantity can be a measurement quantity related to communication services, as described in the relevant description of the first measurement quantity in Explanation 1 above, and will not be repeated here.

[0210] The second measurement quantity includes channel parameter information obtained from channel estimation or parameter estimation based on channel estimation, as well as channel multipath parameter information, as described in the relevant description of the second measurement quantity in Explanation 2 above, and will not be repeated here. The second measurement quantity can refer to channel information, including channel parameter information and channel multipath parameter information.

[0211] The sixth information can be a vector or a vector index, etc. For example, the sixth information includes: a precoding vector index, a precoding matrix index (PMI), or a precoding vector merging coefficient index. In one embodiment, the set of precoding vectors, i.e., the precoding codebook, is predefined by the protocol or pre-configured by the network-side device and informed to the terminal in advance. The network-side device feeds back the sixth information to the terminal, i.e., the precoding vector index, the precoding matrix index (PMI), the precoding vector merging coefficient index, etc. The terminal determines the precoding vector used by the network-side device for communication transmission through the predefined precoding codebook; or, the sixth information may include: a precoding vector (referring to directly transmitted precoding weights) or a precoding matrix (referring to directly transmitted precoding weights), etc. In one embodiment, the sixth information can be a second vector, which is a vector calculated from at least one channel multipath complex amplitude measurement value in the second measurement quantity, and at least one multipath parameter information associated with them (including multipath delay, multipath angle, near and far field information, first hop or last hop multipath distance, etc.). Specifically, a set of steering vectors (at least one) is first calculated based on the parameter information of the at least one multipath, and then a second vector is obtained by weighted merging based on the complex amplitude of the at least one channel multipath; the second vector is the precoding vector used by the BS for communication transmission.

[0212] The second parameter configuration information can be used for communication transmission operations or second channel measurement. The content of the second parameter configuration information is described in the relevant description of parameter configuration information in Explanation 3 above, and will not be repeated here.

[0213] It should be noted that the first target information may further include at least one of the following: the relationship between the second information and the third information; the relationship between the second information and the fourth information; the relationship between the second information and at least one of the first measurement quantities; the relationship between the second information and at least one of the second measurement quantities; the relationship between the second information and at least one fifth information; the relationship between the second information and at least one sixth information; the relationship between the second information and the parameter configuration information corresponding to the first channel measurement; the relationship between the third information and the fourth information; the relationship between the third information and at least one of the first measurement quantities; the relationship between the third information and at least one of the second measurement quantities; the relationship between the third information and at least one fifth information; the relationship between the third information and at least one sixth information; the relationship between the third information and the parameter configuration information corresponding to the first channel measurement; and so on.

[0214] The association between the first information and the second information can refer to the association between the first index and the second index (or be described as a mapping relationship); the association between the first index and the second index can be used to indicate the position of the basic unit corresponding to the first index.

[0215] The relationship between the first information and the third information can refer to the relationship between the first index and the third index (or be described as a mapping relationship); the relationship between the first index and the third index can be used to indicate the rotation or flipping state of the basic unit corresponding to the first index.

[0216] The relationship between the first information and the fourth information can refer to the relationship between the first index and the fourth index (or be described as a mapping relationship); the relationship between the first index and the fourth index can be used to indicate which visible area the basic unit corresponding to the first index belongs to.

[0217] The association between the first information and at least one of the first measurements can refer to the association between the first index and at least one of the first measurements (or be described as a mapping relationship).

[0218] The association between the first information and at least one of the second measurements can refer to the association between the first index and at least one of the second measurements (or be described as a mapping relationship).

[0219] The association between the first information and at least one fifth information can refer to the association between the first index and at least one first vector (or be expressed as a mapping relationship).

[0220] The association between the first information and at least one sixth information can refer to the association between the first index and at least one second vector (or expressed as a mapping relationship).

[0221] The association between the fourth information and at least one of the first measurements can refer to the association between the fourth index and at least one of the first measurements (or be described as a mapping relationship).

[0222] The association between the fourth information and at least one of the second measurements can refer to the association between the fourth index and at least one of the second measurements (or be described as a mapping relationship).

[0223] The association between the fourth information and at least one sixth information can refer to the association between the fourth index and at least one second vector (or expressed as a mapping relationship).

[0224] The association between the first information and the parameter configuration information corresponding to the first channel measurement can refer to the association (or mapping) between the first index and the parameter configuration information corresponding to the first channel measurement. The content of the parameter configuration information corresponding to the first channel measurement is described in the relevant section of Explanation 3 above, and will not be repeated here. The association between the first index and the parameter configuration information corresponding to the first channel measurement can include the association between the first index and at least one resource or resource set used for the first channel measurement; the resource or resource set includes time-domain resources or resource sets, frequency-domain resources or resource sets, and time-frequency resources or resource sets.

[0225] The association between the fourth information and the parameter configuration information corresponding to the first channel measurement can refer to the association (or mapping) between the fourth index and the parameter configuration information corresponding to the first channel measurement. The content of the parameter configuration information corresponding to the first channel measurement is described in the relevant section of Explanation 3 above, and will not be repeated here. The association between the fourth index and the parameter configuration information corresponding to the first channel measurement can include the association between the fourth index and at least one resource or resource set used for the first channel measurement; the resource or resource set includes time-domain resources or resource sets, frequency-domain resources or resource sets, and time-frequency resources or resource sets.

[0226] Specifically, the association (or mapping relationship) between at least one of the first and fourth indices and at least one of the first and second measurements can be represented by a mapping table. Table 2 provides an example mapping representation to illustrate the association between a portion of the first index and a portion of the second measurement. It should be noted that in actual information transmission, the above mapping relationship can be represented by multiple mapping tables, each of which can be a sub-table of Table 2.

[0227] Table 2

[0228] Complex Amplitude refers to the complex amplitude. Delay is the time delay.

[0229] Specifically, the number of the first vector (or first vector index), the second vector (or second vector index), or the channel estimation matrix included in the first target information can be greater than one. The association between at least one of the first index and the fourth index and the second vector can be represented by a mapping table. Taking the association between the fourth index and the second vector (or expressed as a mapping relationship) as an example, Table 3 gives an example of a mapping representation.

[0230] Table 3

[0231] Specifically, the association between the first index and at least one of the second and third indices can be represented by a mapping table. One first index can be associated with multiple second indices, and one second index can also be associated with multiple first indices; similarly, one first index can be associated with multiple third indices, and one third index can also be associated with multiple first indices. Table 4 provides an example of the mapping relationship between the first index and the second and third indices.

[0232] Table 4

[0233] Specifically, the mapping relationship between at least one of the first index and the fourth index and the first channel measurement resource or resource set can be represented by a mapping table. Taking the mapping relationship between the fourth index and the first channel measurement resource or resource set as an example, Table 5 provides an example of a mapping representation.

[0234] Table 5

[0235] It should be noted that in actual information transmission, multiple mapping tables can be transmitted using the above examples (Tables 2-5), or an integrated mapping table can be transmitted, which contains all the above mapping relationship information.

[0236] The seventh information can indicate a combination of the first region or a set of regions of the first region and channel information. For example, the seventh information can indicate a set of PMI vectors and a first region or the set of regions, as well as the association relationship, or combination of association relationships, between each region in the first region or the set of regions and a specified PMI vector or subset of vectors in the set of PMI vectors; or, for another example, a set of cluster parameters and a first region or a set of regions of the first region, as well as the association relationship, or combination of association relationships, between each region in the first region or the set of regions and a specified cluster or subset of clusters in the set of cluster parameters.

[0237] It should be noted that the seventh information can implicitly identify or indicate the association between the first region and the channel information. For example, when the first target information includes multiple first region information, the first target information includes at least one of multiple first, second, and third information, combined with at least one of fifth, sixth, first measurement value, and second measurement value. One implementation is that the first target information can be a structure that arranges the above combinations in a certain order to represent / indicate multiple different first regions. In this form, not only is the first region implicitly indicated, but the association between the first region and the channel information (i.e., at least one of the fifth, sixth, first, and second measurement values) is also indicated.

[0238] In this embodiment, through the aforementioned first target information, the network-side device and the terminal can obtain the visible area of ​​the channel on the antenna array of at least one of the terminal and the network-side device, and then perform communication transmission operations or second channel measurements through the relevant information on the visible area of ​​the channel on the antenna array of at least one of the terminal and the network-side device.

[0239] Optionally, the basic unit is predefined by the protocol or configured by the network-side device.

[0240] The number of basic units can be one or more. A basic unit can be a set of basic patterns determined by the antenna port configuration of the base station and the number of horizontal and vertical ports (parameters N1 and N2). For example, a predefined table or scaling factors for N1 and N2.

[0241] Optionally, the basic unit includes at least one of the following:

[0242] A two-dimensional visible region used to characterize the two-dimensional antenna array region;

[0243] A one-dimensional visible region used to characterize a one-dimensional antenna array region.

[0244] Optionally, before the network-side device performs a first channel measurement on the first signal sent by the terminal, the method further includes:

[0245] The network-side device receives second target information sent by the terminal, the second target information including at least one of the following:

[0246] Location information of at least one of the terminal and the network-side device;

[0247] At least one of the terminal and the network-side device has first parameter configuration information for the first channel measurement;

[0248] The target parameter configuration information is used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0249] The terminal can send location information of itself and at least one of the network-side devices to the network-side equipment. This helps reduce the complexity of channel parameter estimation during signal processing by the network-side equipment in the first channel measurement process. The terminal's location information can be determined through the NR positioning process. After the core network equipment obtains the terminal's location information, it sends it to the terminal through the network-side equipment, such as a base station. Alternatively, the network-side equipment can determine the terminal's location information through wireless sensing.

[0250] The first parameter configuration information for the first channel measurement includes at least one of the terminal and the network-side device. This parameter configuration information is described in the relevant section of Explanation 2 above and will not be repeated here. The parameter configuration information for the first channel measurement may include antenna array configuration information for the first channel measurement.

[0251] The target parameter configuration information may refer to the target parameter configuration information of the network-side device, that is, the signal processing method and corresponding parameter configuration information used by the network-side device to acquire at least one of the first measurement quantity, the second measurement quantity, the second vector, and the first vector.

[0252] In one embodiment, the configuration information of the antenna array or antenna port on the terminal side used for the first channel measurement, the number of first regions or a first threshold value, the accuracy of the first region or a second threshold value, or the target parameter configuration information can be indicated by the terminal.

[0253] In one implementation, the network-side device can determine the number of first regions or a first threshold value, the accuracy of the first region or a second threshold value, and the target parameter configuration information on its own. However, the configuration information of the antenna array or antenna port on the terminal side can be obtained from the terminal, unless the network-side device has configured the antenna array or antenna port on the terminal side in advance.

[0254] Optionally, the first parameter configuration information includes at least one of the following:

[0255] Configuration information of the first signal;

[0256] Configuration information of the antenna array or antenna port used for the first channel measurement;

[0257] The number of the first region or the first threshold value;

[0258] The precision of the first region or the second threshold value;

[0259] Wherein, the first threshold value is a threshold value for the number of the first region, and the second threshold value is a threshold value for the accuracy of the first region.

[0260] The configuration information of the first signal may include at least parameters such as the time-frequency resource configuration or sequence generation parameters of the first signal.

[0261] The configuration information of the antenna array or antenna port used for the first channel measurement may include at least one of the following:

[0262] Antenna port topology (i.e., the topological information of the physical subarray preset reference point or physical antenna element connected to the antenna port in physical space), antenna port index, number of antenna ports, association between antenna ports and physical antenna elements or physical subarrays, physical subarray index, number of physical subarrays, number of physical antenna elements inside the physical subarray, spacing between physical antenna elements inside the physical subarray (including at least one of horizontal and vertical spacing), index of physical antenna elements inside the physical subarray (e.g., including: index of specified positions such as edge, end, and center of the physical subarray, or index of all physical antenna elements inside the physical subarray), physical subarray array information (e.g., indicating that the physical subarray is at least one of linear array, rectangular area array, circular array, cylindrical array, etc.), orientation of physical antenna array (or panel), aperture of physical antenna array (including aperture of physical subarray or aperture of the entire physical antenna array), polarization characteristics of physical antenna, gain of physical antenna elements (including antenna gain in different directions, i.e., 2D / 3D antenna pattern).

[0263] It should be noted that the physical antenna element index within a physical subarray can be an absolute index, meaning that different physical antenna elements in different physical subarrays have a unique index; or it can be a relative index, meaning that different physical subarrays use a unique index, different physical antenna elements within the same physical subarray have unique indexes, but different physical antenna elements within different subarrays may have the same index value, meaning that physical antenna elements within different subarrays use the same set of index values.

[0264] For example, suppose there are two physical subarrays, each containing four physical antenna elements. If using absolute indexing, the physical antenna indices in the first physical subarray are 0, 1, 2, 3, and in the second physical subarray are 4, 5, 6, 7. If using relative indexing, the index of the first physical subarray is 0, the index of the second physical subarray is 1, and the physical antenna indices within each physical subarray are all 0, 1, 2, 3. The physical antennas are uniquely identified by combining the physical subarray index with the physical antenna index.

[0265] In one implementation, the number of first regions included in the first target information does not exceed a first threshold value. For example, for PMI feedback, the number of first regions does not exceed the number of PMI feedback codewords; or, by default, the number of first regions that the network-side device can feed back or the first threshold value is determined according to a protocol predefined value. For instance, if the terminal indicates that a first region measurement is required, the network-side device defaults to a first region number of 1.

[0266] The precision of the first region may refer to the requirement for the number of antennas or antenna ports corresponding to the first region.

[0267] In one implementation, the number of antennas or ports corresponding to the first region does not exceed a second threshold, or is greater than a second threshold.

[0268] The quantity or first threshold value of the first region, or the precision or second threshold value of the first region, can serve as the precision requirement for the network-side device to indicate the visible area. The precision requirement can be limiting information on a defined first index set, such as limiting the first index set indicated by the network-side device.

[0269] For example, the terminal can directly indicate the first set of indexes available to the network-side device. Taking Table 1 as an example, it can indicate that the network-side device can only use the first index subset {1,2,4} for visual area description; or, it can classify the precision of visual area description, for example, into levels 1, 2, ...,M, where M is an integer greater than 1, and each level corresponds to a first index subset. The terminal can directly indicate the precision level used by the network-side device.

[0270] For example, the first threshold value can be the maximum number of first regions to be fed back. The terminal instructs the network-side device to set the first threshold value X (X is an integer greater than or equal to 0), and the number of first regions fed back by the network-side device is no greater than X. The algorithm on the network-side device side determines which first regions to feed back information.

[0271] The first threshold value can also be the power value (or latency value, angle value, etc.) of the strongest path / cluster corresponding to the first region. The network-side device reports the first region where the power of the strongest path / cluster is greater than the first threshold (or the first region where the latency / angle is greater than / less than the threshold).

[0272] For example, the second threshold value can be the limiting information of the first index set; the second threshold value can also be the minimum granularity value of at least one dimension of the basic unit; when the network-side device feeds back the first index, it can only feed back the first index value corresponding to the basic unit that satisfies the minimum granularity.

[0273] In this embodiment, the first parameter configuration information includes antenna array configuration information for the first channel measurement, thereby enabling the determination of the antenna array configuration for the network-side device to receive the first signal, or informing the network-side device terminal of the antenna array configuration for sending the first signal through the antenna array configuration information.

[0274] Optionally, the target parameter configuration information includes at least one of the following:

[0275] Indicative information used to indicate parameter estimation algorithms;

[0276] Judgment information in the first region;

[0277] The parameter estimation algorithm is a signal processing algorithm used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0278] The indication information used to indicate the parameter estimation algorithm may include at least one of the following:

[0279] Indicative information used to indicate the type of parameter estimation algorithm;

[0280] The dimensionality type or size information of the input data for parameter estimation algorithms;

[0281] The computation window information of the parameter estimation algorithm;

[0282] Threshold information for parameter estimation algorithms;

[0283] Information on the search step size or search interval of the parameter estimation algorithm.

[0284] The indication information used to specify the parameter estimation algorithm type can be either the parameter estimation algorithm type itself or a parameter estimation algorithm type index. The parameter estimation algorithm types include Fast Fourier Transform (FFT) based, Beamformer, Subspace based, Expectation-Maximization (EM) based, Compressive Sensing (CS) based, etc. A set of index values ​​can be defined to correspond one-to-one with the above parameter estimation algorithm types; when actually sending the second target information, only the corresponding parameter estimation algorithm type index needs to be sent.

[0285] The dimension type or size information of the input data for the parameter estimation algorithm can be the matrix dimension or size information of the parameter estimation input data. Specifically, it represents the number or size of the dimensions of the channel estimation matrix (or channel state information matrix, or channel transfer function matrix) used for the first parameter estimation, or the covariance matrix or correlation matrix of the channel estimation matrix. The required input data matrix dimension may differ for different parameters to be estimated; therefore, this information is related to at least one of the first measurement, the second measurement, and the second vector.

[0286] For example, to estimate the path loss of the second measurement, the dimension of the input data matrix can be "1×1×f". num ", where f num The number of frequency points (frequency domain resources) for channel estimation, "1×1×f numThe first dimension is the receive array dimension, where the number "1" indicates that there is one receive antenna. Similarly, the second dimension is the transmit array dimension, where the number "1" indicates that there is one transmit antenna. This means the path loss is calculated from the channel estimation vector of one of the single-input single-output (SISO) sub-channels between the BS and UE. For example, to estimate the multipath departure azimuth angle of the second measurement, the input data dimension could be "4×16×f". num The number “4” indicates that there are 4 receiving antennas and the number “16” indicates that there are 16 transmitting antennas. That is, the multipath departure azimuth angle is calculated from the channel estimation matrix of one of the MIMO sub-channels between the BS and UE, which consists of 16 transmitting antennas and 4 receiving antennas.

[0287] The calculation window information of the parameter estimation algorithm may include at least one of the following: the calculation window size of the UE-side transmit array during a single parameter estimation, the calculation window size of the BS-side receive array during a single parameter estimation, the calculation window interval of the UE-side transmit array during multiple consecutive parameter estimations, the calculation window interval of the BS-side receive array during multiple consecutive parameter estimations, the starting position of the calculation window of the UE-side transmit array during multiple consecutive parameter estimations, and the starting position of the calculation window of the BS-side receive array during multiple consecutive parameter estimations.

[0288] When the array is a two-dimensional array, the size of the calculation window includes the size in the horizontal direction and the size in the vertical direction, the interval of the calculation window includes the interval in the horizontal direction and the interval in the vertical direction, and the starting position of the calculation window includes the starting position in the horizontal direction and the starting position in the vertical direction.

[0289] Taking the estimation of the multipath departure azimuth angle of the second measurement as an example again, the input data dimension is "4×16×f num The number "16" indicates that the number of transmit antennas is 16. Therefore, the calculation window size of the UE-side transmit array can be "1×16", where the number "1" corresponds to the number of antennas in the vertical direction of the transmit array being 1, and the number "16" corresponds to the number of antennas in the horizontal direction of the transmit array being 16. That is, the subarray corresponding to the calculation window is a linear array with 1 row and 16 columns. The calculation window size of the UE-side transmit array can also be "4×4", that is, the subarray corresponding to the calculation window is a planar array with 4 rows and 4 columns. In this example, the calculation window of the BS-side receive array can be "1×4" or "2×2".

[0290] Furthermore, assuming the UE transmit array is a 1-row 256-column linear array, when the BS performs multiple consecutive parameter estimations, if the p-th calculation window corresponds to physical antenna indices n to n+15, and its nearest neighboring p+1-th calculation window corresponds to physical antenna indices n+m to n+m+15, then the calculation window interval is m. If assuming the UE transmit array is a 16-row 16-column linear array, and the p-th calculation window corresponds to physical antenna horizontal indices n1 to n1+4 and vertical indices n2 to n2+4, and its nearest neighboring p+1-th calculation window corresponds to physical antenna horizontal indices n1+m1 to n1+m1+4 and vertical indices n2+m2 to n2+m2+4, then the horizontal interval of the calculation window is m1, and the vertical interval is m2.

[0291] Among them, the threshold information of the parameter estimation algorithm can be parameter estimation threshold information, that is, various possible threshold values ​​used by the above algorithm, including: iteration end decision threshold value, outlier determination threshold value, decision threshold value used for the association of the same estimation target data when estimating parameters multiple times in a row, etc.

[0292] The search step size or search interval information of the parameter estimation algorithm can be the minimum search interval when the algorithm searches for spectral peaks, as well as the starting position information of the search interval.

[0293] The decision information for the first region can be visible region decision information, which can be used to determine and divide the visible region using a first or second measurement. For example, the visible region decision information can indicate which first or second measurements are used to divide the visible region, and the corresponding decision threshold value. It should be noted that the visible regions corresponding to different first or second measurements may differ.

[0294] In this embodiment, the target parameter configuration information described above can be used to configure signal processing related parameters for obtaining at least one of the first measurement quantity, second measurement quantity, first vector, and second vector by performing first channel measurement.

[0295] Optionally, the method further includes:

[0296] The network-side device sends third target information to the terminal, the third target information including at least one of the following:

[0297] The location information of the network-side device;

[0298] The physical antenna array information of the network-side device;

[0299] The status information of the network-side device;

[0300] The communication capability information of the network-side device;

[0301] The network-side device can be used to communicate resource information;

[0302] The computing power information of the network-side devices.

[0303] The physical antenna array information of the network-side equipment may include antenna panel orientation, array type, number of antennas (including horizontal and vertical directions), array aperture, antenna polarization characteristics or element gain and directivity characteristics.

[0304] The status information of the network-side device may include information such as moving speed, moving direction, and the time period during which it remains stationary or in motion.

[0305] The communication capability information of the network-side device may include the communication coverage area of ​​the network-side device, the maximum bandwidth available for communication services, and the maximum number of antenna ports available for communication services.

[0306] The resource information available for communication by the network-side device can refer to the resource information currently available for communication by the network-side device (including time resources (number of symbols, number of time slots, number of frames, etc.), frequency resources (number of Resource Blocks (RBs), number of Resource Elements (REs), total bandwidth, available frequency band locations, etc.), antenna resources (number of antennas / antenna subarrays), orthogonal code resources (orthogonal code length and quantity), etc.).

[0307] The computing power information of the network-side device may refer to the highest configuration information of the target parameters supported by the network-side device, including at least one of the following: the supported parameter estimation algorithm type or parameter estimation algorithm type index, the maximum dimension of the supported parameter estimation input data matrix, the maximum size of at least one dimension of the supported parameter estimation input data matrix, the maximum dimension of the supported computation window, the maximum size of at least one dimension of the computation window, the minimum interval of the computation window (including the horizontal and vertical directions), the maximum starting range of the computation window (including the horizontal and vertical directions), the maximum number of consecutive parameter estimations supported, the minimum search step size supported, and the maximum search interval supported.

[0308] Optionally, after the network-side device performs a first channel measurement on the first signal sent by the terminal, the method further includes at least one of the following:

[0309] The network-side device performs communication transmission operations based on the first target information;

[0310] The network-side device obtains the second parameter configuration information from the first target information, receives the second signal based on the second parameter configuration information (for example, determines the information of the second signal based on the second parameter configuration information, and receives the second signal based on the information of the second signal), and performs the second channel measurement;

[0311] The network-side device receives the third parameter configuration information sent by the terminal, receives the second signal based on the third parameter configuration information (for example, determines the information of the second signal based on the third parameter configuration information, and receives the second signal based on the information of the second signal), and performs a second channel measurement.

[0312] The second parameter configuration information may include information about the second signal, which may include the time-frequency resources and antenna port of the second signal. The content of the third parameter configuration information is described in the relevant section of Explanation 3 above and will not be repeated here. The third parameter configuration information may include information about the second signal, which may include the time-frequency resources and antenna port of the second signal.

[0313] Optionally, the network-side device performs communication transmission operations based on the first target information, including at least one of the following:

[0314] The network-side device sends a third signal based on the sixth information in the first target information, or receives a third signal based on the sixth information, wherein the sixth information is pre-coded information used by the network-side device for communication transmission;

[0315] The network-side device determines second precoding information based on the first target information, and sends a third signal based on the second precoding information, or receives a third signal based on the second precoding information;

[0316] The network-side device obtains the second parameter configuration information from the first target information and performs communication transmission operations based on the second parameter configuration information.

[0317] The network-side device receives the third parameter configuration information sent by the terminal and performs communication transmission operations based on the third parameter configuration information;

[0318] The third signal is used to transmit communication service data.

[0319] The precoding information (such as the sixth information or the second precoding information) may include precoding vector index, precoding matrix index (PMI), precoding vector merging coefficient index, precoding vector (referring to directly transmitted precoding weights) or precoding matrix (referring to directly transmitted precoding weights), etc.

[0320] In one embodiment, the information sending method of this application includes the following process:

[0321] Step (1): The UE sends a first signal, the BS receives the first signal, and performs a first measurement (such as channel measurement). Based on the first measurement, the BS obtains first target information about channel multipath or the channel. The first target information is described in the preceding description of the first target information, and will not be repeated here.

[0322] In one implementation, the UE sends second target information to the BS. The second target information is described above and will not be repeated here.

[0323] Before the first signal is transmitted, the base station and the terminal exchange second and third target information to determine the base station's processing capabilities and signal detection requirements.

[0324] The UE sends second target information to the BS, which is used to configure signal processing parameters related to the BS's detection of the first area. The second target information includes at least one of the following:

[0325] (1) Location information of base stations and terminals and / or antenna layout information.

[0326] (2) Detection algorithms and configuration information, such as indicating whether the base station should detect the first region, or in other words, whether to use a detection algorithm and codebook set that does not contain spatial non-stationarity (e.g., NR type I or type II codebook) to measure CSI, or to use a detection algorithm and codebook set that supports spatial non-stationarity (e.g., the measurement results of the first region) to perform channel measurements. It is understood that, implicitly, if the detection parameters for the first region are configured, the base station needs to perform measurement feedback according to a detection algorithm that supports spatial non-stationarity.

[0327] (3) Detection requirements for the first region, such as quantity, granularity, location, etc. For example, configure the base station to measure and determine N first regions; or configure the base station to determine that each first region contains no less than M antenna ports; or assume that the UE is given a first region (e.g., through historical data or SRS information) and measure the first region.

[0328] The UE sending the second target information to the BS can be carried in Non-Access Stratum (NAS) signaling (which is sent to the AMF), RRC signaling, Medium Access Control (MAC) Control Element (CE), or Layer 1 signaling (such as Uplink Control Information (UCI)). Alternatively, it can be reported via the user plane, for example, when the core network is a Protocol Data Unit (PDU) session and the RAN is a Data Radio Bearer (DRB). Optionally, at least one of the second target information can be sent from the core network equipment to the BS, including the core network equipment sending at least one of the second target information to the UE, which then forwards it to the BS.

[0329] Step (2): The BS indicates the first target information to the UE.

[0330] The first target information may include a combination of the first region or a set of regions of the first region and channel information. For example, the first target information may include a set of PMI vectors and a first region or the set of regions, as well as the association relationship, or combination of association relationships, between each region in the first region or the set of regions and a specified PMI vector or subset of vectors in the set of PMI vectors; or, for another example, a set of cluster parameters and a first region or a set of regions of the first region, as well as the association relationship, or combination of association relationships, between each region in the first region or the set of regions and a specified cluster or subset of clusters in the set of cluster parameters.

[0331] Optionally, at least a portion of the first target information can be notified to the UE by the BS via a transmitted index. Specifically, at least one of the contents of the first measurement and the second measurement in the first target information can be quantized based on a pre-agreed quantization rule, and the BS only needs to indicate the index corresponding to the quantized value. Table 6 uses FBCD in the second measurement as an example to illustrate the quantization example of the first target information content (e.g., the first target information includes first-hop multipath distance FBCD). It is assumed that the system bandwidth B... sys For 400MHz, the quantization granularity of FBCD can be selected as c / B. sys That is, 0.375m.

[0332] Table 6

[0333] Assuming the BS needs to indicate the parameter information of Cluster ID 6 in UE Table 1, where the measured value of FBCD is 4.888m, some precision can be sacrificed to reduce transmission overhead. In practice, the BS only needs to indicate the quantization index value 4 corresponding to the BS FBCD. The contents of other first and second measurements are similar and will not be elaborated. For example, the complex amplitude and delay of the channel multipath can be quantized values ​​normalized to the maximum value. The maximum value of the complex amplitude or delay is the maximum value of the complex amplitude or delay of all multipaths obtained in this channel estimation in step (1).

[0334] Step (3): The BS and UE perform the target operation. This includes at least one of the following situations:

[0335] (1) The BS uses the second vector (i.e., the sixth information in the first target information) to perform communication transmission; including: the BS uses the second vector to send a second signal, and the UE receives the second signal; or, the UE sends a second signal, and the BS uses the second vector to receive the second signal;

[0336] (2) The BS calculates a third vector based on at least one of the contents of the first target information and uses the third vector for communication transmission; including: the BS uses the third vector to send a second signal and the UE receives the second signal; or, the UE sends a second signal and the BS uses the third vector to receive the second signal, wherein the third vector is precoded information for communication transmission;

[0337] (3) The UE uses the received first vector (i.e., the fifth information in the first target information) to perform communication transmission; including: the BS sends a second signal, and the UE uses the first vector to receive the second signal; or, the UE uses the first vector to send a second signal, and the BS receives the second signal;

[0338] (4) The UE calculates a fourth vector based on at least one of the contents of the received first target information and uses the fourth vector for communication transmission; including: the BS sends a second signal and the UE uses the fourth vector to receive the second signal; or, the UE uses the fourth vector to send a second signal and the BS receives the second signal, wherein the fourth vector is precoded information for communication transmission;

[0339] (5) The UE performs a second operation based on the received second parameter configuration information; the second operation includes at least one of the following:

[0340] (5-a) The BS and UE determine the third signal based on the second parameter configuration information, including the time-frequency resources and antenna port of the third signal. The UE sends the third signal, the BS receives the third signal, and performs the second measurement.

[0341] (5-b) The BS and UE communicate and transmit data.

[0342] (6) The UE determines the third parameter configuration information (see Explanation 3) based on at least one of the received first target information and performs the third operation. The third operation includes at least one of the following:

[0343] (6-a) The UE sends the third parameter configuration information to the BS. The BS and UE determine the third signal based on the third parameter configuration information, including the time-frequency resources and antenna port of the third signal. The UE sends the third signal, the BS receives the third signal, and performs the second measurement.

[0344] (6-b) The UE sends the third parameter configuration information to the BS. The BS and UE communicate based on the third parameter configuration information.

[0345] The following examples will provide further explanation:

[0346] Example 1:

[0347] In this example, the base station instructs the terminal on SRS port and resource configuration.

[0348] This application embodiment can indicate the visible area of ​​the channel on the terminal side. Through this application embodiment, the terminal can determine the SRS signal transmitting antenna port used in subsequent uplink channel measurements, as well as the receiving antenna port used for downlink communication transmission. It can also provide a reference for configuring the SRS signal associated with the transmitting antenna port, including the time and frequency resources used by the SRS and the ZC sequence parameter configuration.

[0349] Without considering spatial non-stationarity, the power utilization of the UE would be low, meaning that the UE using all antenna ports could result in power waste, especially for UEs at the cell edge. This application's embodiments allocate limited transmit power to antennas within the line of sight, rather than distributing power evenly across all UE antenna ports. Furthermore, since the number of transmit antenna ports of a UE is often less than the number of receive antenna ports, the UE can perform (transmit) antenna switching when transmitting uplink SRS signals to ensure that the BS obtains channel information from all receive antennas on the UE side. The UE obtaining its own line of sight information helps avoid ineffective antenna switching.

[0350] The terminal SRS port indication process in this example is as follows:

[0351] Step (1): The UE sends a first signal, and the BS receives the first signal, which includes an SRS signal, and performs uplink channel measurement. The UE can perform antenna switching to obtain complete channel information between the BS and the UE. The BS obtains first target information about channel multipath or channel based on the uplink channel measurement, including at least one of the following: first to fourth indices, first measurement quantity, second measurement quantity, second parameter configuration information, the association between the first to fourth indices and the first measurement quantity, and the association between the first to fourth indices and the second measurement quantity;

[0352] The second parameter configuration information may include antenna port information used by the UE to transmit a third signal (including SRS signal) when performing uplink channel measurements, such as the transmit antenna port index; the second parameter configuration information may also include antenna port information used by the UE to receive the second signal during downlink communication transmission, such as the receive antenna port index.

[0353] The UE sends second target information to the BS, including at least one of the following: the UE's location information and the antenna array configuration information used by the UE for uplink channel measurement.

[0354] Step (2): The BS indicates the first target information to the UE.

[0355] Step (3): Based on the first target information, the UE determines the transmit antenna port for subsequent uplink channel measurements. Specifically, based on the first to fourth indices, the first measurement quantity, the second measurement quantity, the correlation between the first to fourth indices and the first measurement quantity, and the correlation between the first to fourth indices and the second measurement quantity in the first target information, the UE can autonomously determine at least one of the following: the transmit antenna port for the third signal (including SRS signal), the transmit antenna port for communication transmission, the receive antenna port for communication transmission, the antenna switching method, and the SRS resource set or SRS resource. That is, the BS implicitly indicates the antenna port for the UE to perform subsequent uplink channel measurements or communication transmission through the aforementioned first target information.

[0356] Alternatively, the UE can directly determine at least one of the following based on the second parameter configuration information in the first target information: the transmit antenna port for the third signal (including SRS signal), the transmit antenna port for communication transmission, the receive antenna port for communication transmission, the antenna switching method, and the SRS resource set or SRS resource. In other words, the BS explicitly indicates the antenna port for subsequent uplink channel measurement or communication transmission to the UE through the second parameter configuration information in the aforementioned first target information.

[0357] Example 2:

[0358] In this example, the base station instructs the terminal to transmit the first target information downlink non-codebook.

[0359] When the MIMO channel exhibits spatial non-stationarity, after the BS obtains uplink channel information and the line-of-sight information of both the UE and the BS, it can determine the downlink CSI-RS precoding matrix and transmit the precoded downlink CSI-RS signal. The UE calculates the RI and CQI based on the received precoded CSI-RS signal. However, if the UE lacks its own line-of-sight information, it may cause errors or significant inaccuracies in the RI and CQI calculations, further preventing the BS from determining the optimal downlink transmission parameters. Therefore, in addition to transmitting the downlink CSI-RS signal, the BS can also indicate the UE's line-of-sight information.

[0360] The downlink non-codebook transmission process in this example is as follows:

[0361] Step (1): The UE sends an SRS signal at the uplink time, the BS receives the uplink SRS signal, performs uplink channel estimation, and obtains the first target information about the channel multipath or the channel, including at least one of the following: first to fourth indices, first measurement quantity, second measurement quantity, second parameter configuration information, the correlation between the first to fourth indices and the first measurement quantity, and the correlation between the first to fourth indices and the second measurement quantity;

[0362] The second parameter configuration information may include the transmit antenna port index corresponding to the UE side channel used to calculate RI or CQI.

[0363] Step (2): The BS uses the received SRS reference signal to perform channel estimation and obtains the uplink channel matrix H. Then, it uses the uplink channel matrix H to obtain the precoding vector of each CSI-RS port, i.e., the second vector, and precodes the CSI-RS reference signal.

[0364] Step (3): The BS sends a precoded CSI-RS reference signal, and the UE uses the received CSI-RS reference signal to perform channel estimation.

[0365] In addition, the BS indicates at least one of the aforementioned first target information contents to the UE. The UE combines the aforementioned first target information contents to perform RI selection and CQI calculation, selects the optimal RI and the corresponding CQI, and then feeds it back to the BS in the CSI reporting.

[0366] Step (4): The BS determines the number of layers of the PDSCH and the corresponding precoding matrix based on the RI fed back by the UE, and determines the MSC level of the PDSCH codeword based on the CQI fed back.

[0367] Example 3:

[0368] The terminal determines its spatial non-stationary characteristics through downlink channel measurements and reports this information to the network-side equipment. The network-side equipment configures the antenna set used by the terminal for uplink transmission (e.g., SRS transmission, Physical Uplink Shared Channel (PUSCH) transmission) based on the first area configuration. Due to limitations in transmit power and RF link power consumption, the number of receiving antennas in the terminal equipment may be greater than the number of transmitting antennas. Furthermore, for high-frequency bands such as FR3 and FR2, the number of antennas may increase further, making SRS-based switching an inefficient method for uplink channel measurement. Therefore, based on the reciprocity of uplink and downlink channels (fully reciprocal for Time Division Duplex (TDD) mode; partially reciprocal for Frequency Division Duplex (FDD) mode), the terminal obtains its uplink antenna port set (i.e., antenna ports in the spatially non-stationary visible area) through downlink channel measurements, which is crucial for subsequent uplink channel measurements and communication. The specific process is as follows:

[0369] Step (1): The terminal receives the first downlink signal sent by the network device, performs downlink channel measurement, and obtains one or more first regions, as well as channel information for each first region. The first region is the visible area of ​​the terminal. It can be understood that the first region can be a subset of the terminal antenna array; or it can be the entire set of the terminal antenna array (i.e., the spatial stationary characteristics are regarded as a special case of spatial non-stationarity).

[0370] Step (2): The terminal feeds back first target information, which includes description information of one or more first regions and corresponding channel information. The description information of the first region indicates the antenna or antenna port of the terminal contained in the first region. The number of antennas contained in the first region can be equal to or not greater than the number of transmit radio frequency links of the terminal device, or the number of antenna switching SRS allowed by the network device / supported by the terminal device; or, it can be configured by the network-side device; or it can be determined by the terminal. The first region can be represented by a bitmap, or when the terminal antenna array layout information (e.g., the number of horizontal and vertical antennas) is reported to the network-side device, the basic unit index mentioned above can be used to describe the first region. The channel information corresponding to the first region can include precoding information PMI, signal quality CQI, RI and other CSI information calculated from the channel information corresponding to the antennas of the first region, and the visible area of ​​the network-side device. It can be understood that if the first target information contains multiple first regions, at least one antenna / antenna port among the multiple first regions is different; the arrangement order of the multiple first regions can be arranged in ascending or descending order according to signal quality or a certain channel measurement index.

[0371] Step (3): The terminal receives the first uplink signal configuration information from the network-side device. The configuration information of the first uplink signal includes identification information, which is used to indicate one of the multiple first regions in the first target information. For example, the identification information is a number i, corresponding to the i-th first region in the first target information. When the terminal antenna array layout information (e.g., the number of horizontal and vertical antennas) is reported to the network-side device, the identification information can also be bitmap information or basic unit index, showing the configuration of the terminal antenna used for uplink transmission. It can be understood that the network device determines the terminal antenna used for uplink transmission based on the first region in the first target information. The configuration information of the first uplink signal may also include SRS configuration information, configuring different time resources, frequency resources, and sequence resources of SRS to correspond to different terminal antennas. For example, the configuration information of the first uplink signal configures two sets of SRS resources, each set of SRS resources is associated with an identification information (first region); a terminal antenna port in the first region corresponds to a transmitting radio frequency link of the terminal; the antennas in the first region are measured by frequency division or code division, and the SRS resources of different first regions are distinguished and multiplexed by time division.

[0372] Step (4): The terminal sends an uplink signal according to the first uplink signal configuration information. Optionally, when configuring the first downlink signal, the network device configures the SRS resources, such as the number of ports. The terminal uses SRS to report the first area, that is, the terminal performs downlink channel measurement to determine the first area. The number of terminal antennas in the first area is equal to or not greater than the number of SRS resources. The terminal uses the terminal antennas in the first area to send SRS. The network device obtains the uplink channel information corresponding to the first area through SRS detection. It can be understood that the network device can configure multiple sets of SRS resources, and the terminal can determine multiple first areas accordingly and send multiple SRSs. Each antenna can send different SRSs, or a precoded SRS can be sent based on downlink channel measurement. The network device indicates the identification information of the first area to indicate the switching of the uplink antenna set, which is used for uplink channel measurement and / or uplink data transmission.

[0373] Referring to Figure 6, which is a flowchart of an information receiving method provided in an embodiment of this application, the information receiving method includes the following steps:

[0374] Step 201: The terminal sends the first signal;

[0375] Step 202: The terminal receives first target information sent by the network-side device. The first target information is related information of a first region. The first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0376] Optionally, the first target information includes at least one of the following:

[0377] First information, which is used to characterize the shape of the first region;

[0378] The second information is used to characterize the physical location of the units constituting the first region;

[0379] The third information is used to characterize the transformation relationship between the units constituting the first region and the basic units;

[0380] The fourth information is used to identify the first region;

[0381] The fifth piece of information is the pre-coded information used by the terminal for communication transmission;

[0382] The relationship between the fourth information and the fifth information.

[0383] Optionally, the first information includes a first index, which is an index of one or more basic units associated with the first region.

[0384] Optionally, the second information includes a second index, which indicates the physical location or logical location of the target unit in the terminal antenna array. The target unit is the basic unit corresponding to the first index, or the target unit is a unit that has a transformation relationship with the basic unit corresponding to the first index. The target unit is used to constitute the first region.

[0385] Optionally, the first target information includes the fourth information, which includes one or more fourth indices, each of which corresponds to a first region, and the first region is determined by at least one of the first information, the second information, the third information, and the fifth information.

[0386] Optionally, the basic unit is predefined by the protocol or configured by the network-side device.

[0387] Optionally, the basic unit includes at least one of the following:

[0388] A two-dimensional visible region used to characterize the two-dimensional antenna array region;

[0389] A one-dimensional visible region used to characterize a one-dimensional antenna array region.

[0390] Optionally, the method further includes:

[0391] The terminal sends second target information to the network-side device, the second target information including at least one of the following:

[0392] Location information of at least one of the terminal and the network-side device;

[0393] At least one of the terminal and the network-side device has first parameter configuration information for first channel measurement, wherein the first channel measurement is used to obtain the first target information;

[0394] The target parameter configuration information is used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0395] Optionally, the first parameter configuration information includes at least one of the following:

[0396] Configuration information of the first signal;

[0397] Configuration information of the antenna array or antenna port used for the first channel measurement;

[0398] The number of the first region or the first threshold value;

[0399] The precision of the first region or the second threshold value;

[0400] Wherein, the first threshold value is a threshold value for the number of the first region, and the second threshold value is a threshold value for the accuracy of the first region.

[0401] Optionally, the target parameter configuration information includes at least one of the following:

[0402] Indicative information used to indicate parameter estimation algorithms;

[0403] Judgment information in the first region;

[0404] The parameter estimation algorithm is a signal processing algorithm used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0405] Optionally, after the terminal receives the first target information sent by the network-side device, the method further includes at least one of the following:

[0406] The terminal performs a communication transmission operation based on the first target information;

[0407] The terminal obtains the second parameter configuration information from the first target information, and sends the second signal based on the second parameter configuration information (for example, determining the information of the second signal based on the second parameter configuration information, and sending the third signal based on the information of the second signal). The second signal is used for second channel measurement.

[0408] The terminal determines third parameter configuration information based on the first target information, sends the third parameter configuration information to the network-side device, and sends the second signal based on the third parameter configuration information (for example, determining the information of the second signal based on the third parameter configuration information and sending the third signal based on the information of the second signal). The second signal is used for second channel measurement.

[0409] Optionally, the terminal performs a communication transmission operation based on the first target information, including at least one of the following:

[0410] The terminal acquires the fifth information from the first target information and sends a third signal based on the fifth information, or receives a third signal based on the fifth information;

[0411] The terminal determines first precoding information based on the first target information, and sends a third signal based on the first precoding information, or receives a third signal based on the first precoding information;

[0412] The terminal obtains the second parameter configuration information from the first target information and performs communication transmission operations based on the second parameter configuration information.

[0413] The terminal determines the third parameter configuration information based on the first target information, sends the third parameter configuration information to the network-side device, and performs communication transmission operations based on the third parameter configuration information.

[0414] The third signal is used to transmit communication service data.

[0415] It should be noted that this embodiment is an implementation method of the terminal corresponding to the embodiment shown in FIG3. For the specific implementation method, please refer to the relevant description of the embodiment shown in FIG3. To avoid repeated description, this embodiment will not be repeated.

[0416] The information sending method provided in this application can be executed by an information sending device. This application uses an information sending device executing the information sending method as an example to illustrate the information sending device provided in this application.

[0417] This application provides an information transmitting device. As an example, the information transmitting device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0418] The information transmitting device 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.

[0419] Specifically, referring to Figure 7, when the information transmitting device is a network-side device or a component within a network-side device, the information transmitting device 300 includes:

[0420] Processing module 301 is used to perform a first channel measurement on the first signal sent by the terminal to obtain first target information;

[0421] The sending module 302 is used to send the first target information to the terminal;

[0422] The first target information is related information of a first region, which is a portion of the antenna array of at least one of the network-side device and the terminal.

[0423] Optionally, the first target information includes at least one of the following:

[0424] First information, which is used to characterize the shape of the first region;

[0425] The second information is used to characterize the physical location of the units constituting the first region;

[0426] The third information is used to characterize the transformation relationship between the units constituting the first region and the basic units;

[0427] The fourth information is used to identify the first region;

[0428] The fifth piece of information is the pre-coded information used by the terminal for communication transmission;

[0429] The relationship between the fourth information and the fifth information.

[0430] Optionally, the first information includes a first index, which is an index of one or more basic units associated with the first region.

[0431] Optionally, the second information includes a second index, which indicates the physical location or logical location of the target unit in the terminal antenna array. The target unit is the basic unit corresponding to the first index, or the target unit is a unit that has a transformation relationship with the basic unit corresponding to the first index. The target unit is used to constitute the first region.

[0432] Optionally, the first target information includes the fourth information, which includes one or more fourth indices, each of which corresponds to a first region, and the first region is determined by at least one of the first information, the second information, the third information, and the fifth information.

[0433] Optionally, the basic unit is predefined by the protocol or configured by the network-side device.

[0434] Optionally, the basic unit includes at least one of the following:

[0435] A two-dimensional visible region used to characterize the two-dimensional antenna array region;

[0436] A one-dimensional visible region used to characterize a one-dimensional antenna array region.

[0437] Optionally, the device further includes:

[0438] The receiving module is configured to receive second target information sent by the terminal, wherein the second target information includes at least one of the following:

[0439] Location information of at least one of the terminal and the network-side device;

[0440] At least one of the terminal and the network-side device has first parameter configuration information for the first channel measurement;

[0441] The target parameter configuration information is used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0442] Optionally, the first parameter configuration information includes at least one of the following:

[0443] Configuration information of the first signal;

[0444] Configuration information of the antenna array or antenna port used for the first channel measurement;

[0445] The number of the first region or the first threshold value;

[0446] The precision of the first region or the second threshold value;

[0447] Wherein, the first threshold value is a threshold value for the number of the first region, and the second threshold value is a threshold value for the accuracy of the first region.

[0448] Optionally, the target parameter configuration information includes at least one of the following:

[0449] Indicative information used to indicate parameter estimation algorithms;

[0450] Judgment information in the first region;

[0451] The parameter estimation algorithm is a signal processing algorithm used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0452] The information sending device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG3 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0453] The information receiving method provided in this application can be executed by an information receiving device. This application uses an information receiving device executing the information receiving method as an example to illustrate the information receiving device provided in this application.

[0454] This application provides an information receiving device. As an example, the information receiving device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0455] The information receiving device 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.

[0456] Referring to Figure 8, when the information receiving device is a terminal or a component within a terminal, the information receiving device 400 includes:

[0457] Transmitting module 401 is used to transmit the first signal;

[0458] The receiving module 402 is used to receive first target information sent by the network-side device. The first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0459] Optionally, the first target information includes at least one of the following:

[0460] First information, which is used to characterize the shape of the first region;

[0461] The second information is used to characterize the physical location of the units constituting the first region;

[0462] The third information is used to characterize the transformation relationship between the units constituting the first region and the basic units;

[0463] The fourth information is used to identify the first region;

[0464] The fifth piece of information is the pre-coded information used by the terminal for communication transmission;

[0465] The relationship between the fourth information and the fifth information.

[0466] Optionally, the first information includes a first index, which is an index of one or more basic units associated with the first region.

[0467] Optionally, the second information includes a second index, which indicates the physical location or logical location of the target unit in the terminal antenna array. The target unit is the basic unit corresponding to the first index, or the target unit is a unit that has a transformation relationship with the basic unit corresponding to the first index. The target unit is used to constitute the first region.

[0468] Optionally, the first target information includes the fourth information, which includes one or more fourth indices, each of which corresponds to a first region, and the first region is determined by at least one of the first information, the second information, the third information, and the fifth information.

[0469] Optionally, the basic unit is predefined by the protocol or configured by the network-side device.

[0470] Optionally, the basic unit includes at least one of the following:

[0471] A two-dimensional visible region used to characterize the two-dimensional antenna array region;

[0472] A one-dimensional visible region used to characterize a one-dimensional antenna array region.

[0473] Optionally, the sending module is further configured to:

[0474] Send second target information to the network-side device, the second target information including at least one of the following:

[0475] Location information of at least one of the terminal and the network-side device;

[0476] At least one of the terminal and the network-side device has first parameter configuration information for first channel measurement, wherein the first channel measurement is used to obtain the first target information;

[0477] The target parameter configuration information is used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0478] Optionally, the first parameter configuration information includes at least one of the following:

[0479] Configuration information of the first signal;

[0480] Configuration information of the antenna array or antenna port used for the first channel measurement;

[0481] The number of the first region or the first threshold value;

[0482] The precision of the first region or the second threshold value;

[0483] Wherein, the first threshold value is a threshold value for the number of the first region, and the second threshold value is a threshold value for the accuracy of the first region.

[0484] Optionally, the target parameter configuration information includes at least one of the following:

[0485] Indicative information used to indicate parameter estimation algorithms;

[0486] Judgment information in the first region;

[0487] The parameter estimation algorithm is a signal processing algorithm used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0488] The information receiving device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG6 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0489] As shown in Figure 9, this application embodiment also provides a communication device 500, including a processor 501 and a memory 502. The memory 502 stores a program or instructions that can run on the processor 501. For example, when the communication device 500 is a network-side device, the program or instructions, when executed by the processor 501, implement the various steps of the above-described information sending method embodiment and achieve the same technical effect. When the communication device 500 is a terminal, the program or instructions, when executed by the processor 501, implement the various steps of the above-described information receiving method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0490] 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 FIG9. 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 information receiving device shown in FIG8. Specifically, FIG10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0491] The terminal 600 includes, but is not limited to, at least some of the following components: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.

[0492] Those skilled in the art will understand that terminal 600 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to processor 610 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 10 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.

[0493] It should be understood that, in this embodiment, the input unit 604 may include a graphics processor 6041 and a microphone 6042. The graphics processor 6041 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 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0494] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 601 can transmit it to the processor 610 for processing; in addition, the radio frequency unit 601 can send uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0495] The memory 609 can be used to store software programs or instructions, as well as various data. The memory 609 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 609 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 609 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0496] Processor 610 may include one or more processing units; optionally, processor 610 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 610.

[0497] The radio frequency unit 601 is used to: transmit a first signal;

[0498] The radio frequency unit 601 is also configured to receive first target information sent by the network-side device, wherein the first target information is related information of a first region, and the first region is a portion of the antenna array of at least one of the network-side device and the terminal.

[0499] Optionally, the first target information includes at least one of the following:

[0500] First information, which is used to characterize the shape of the first region;

[0501] The second information is used to characterize the physical location of the units constituting the first region;

[0502] The third information is used to characterize the transformation relationship between the units constituting the first region and the basic units;

[0503] The fourth information is used to identify the first region;

[0504] The fifth piece of information is the pre-coded information used by the terminal for communication transmission;

[0505] The relationship between the fourth information and the fifth information.

[0506] Optionally, the first information includes a first index, which is an index of one or more basic units associated with the first region.

[0507] Optionally, the second information includes a second index, which indicates the physical location or logical location of the target unit in the terminal antenna array. The target unit is the basic unit corresponding to the first index, or the target unit is a unit that has a transformation relationship with the basic unit corresponding to the first index. The target unit is used to constitute the first region.

[0508] Optionally, the first target information includes the fourth information, which includes one or more fourth indices, each of which corresponds to a first region, and the first region is determined by at least one of the first information, the second information, the third information, and the fifth information.

[0509] Optionally, the basic unit is predefined by the protocol or configured by the network-side device.

[0510] Optionally, the basic unit includes at least one of the following:

[0511] A two-dimensional visible region used to characterize the two-dimensional antenna array region;

[0512] A one-dimensional visible region used to characterize a one-dimensional antenna array region.

[0513] Optionally, the radio frequency unit 601 is further configured to:

[0514] Send second target information to the network-side device, the second target information including at least one of the following:

[0515] Location information of at least one of the terminal and the network-side device;

[0516] At least one of the terminal and the network-side device has first parameter configuration information for first channel measurement, wherein the first channel measurement is used to obtain the first target information;

[0517] The target parameter configuration information is used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0518] Optionally, the first parameter configuration information includes at least one of the following:

[0519] Configuration information of the first signal;

[0520] Configuration information of the antenna array or antenna port used for the first channel measurement;

[0521] The number of the first region or the first threshold value;

[0522] The precision of the first region or the second threshold value;

[0523] Wherein, the first threshold value is a threshold value for the number of the first region, and the second threshold value is a threshold value for the accuracy of the first region.

[0524] Optionally, the target parameter configuration information includes at least one of the following:

[0525] Indicative information used to indicate parameter estimation algorithms;

[0526] Judgment information in the first region;

[0527] The parameter estimation algorithm is a signal processing algorithm used to obtain at least one of the first measurement quantity, the second measurement quantity, and the fifth information.

[0528] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description in Figure 6 of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0529] 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 FIG3. 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.

[0530] Specifically, this application embodiment also provides a network-side device, which can be the information transmitting device shown in FIG. 7. As shown in FIG. 11, the network-side device 700 includes: an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704, and a memory 705. The antenna 701 is connected to the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be transmitted and sends it to the radio frequency device 702. The radio frequency device 702 processes the received information and transmits it through the antenna 701.

[0531] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 703, which includes a baseband processor.

[0532] The baseband device 703 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG11. One of the chips is, for example, a baseband processor, which is connected to the memory 705 via a bus interface to call the program in the memory 705 and execute the network device operation shown in the above method embodiment.

[0533] The network-side device may also include a network interface 706, such as a Common Public Radio Interface (CPRI).

[0534] Specifically, the network-side device 700 in this application embodiment further includes: instructions or programs stored in memory 705 and executable on processor 704. Processor 704 calls the instructions or programs in memory 705 to execute the methods executed by each module shown in FIG7 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0535] Specifically, this application also provides a network-side device. As shown in FIG12, the network-side device 800 includes a processor 801, a network interface 802, and a memory 803. The network-side device may be the information transmission device shown in FIG7. The network interface 802 is, for example, a Common Public Radio Interface (CPRI).

[0536] Specifically, the network-side device 800 in this application embodiment further includes: instructions or programs stored in memory 803 and executable on processor 801. Processor 801 calls the instructions or programs in memory 803 to execute the methods executed by each module shown in FIG7 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0537] 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 information sending method or information receiving method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0538] The processor mentioned above is the processor in the terminal or network-side device 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.

[0539] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described information sending method or information receiving method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0540] 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.

[0541] 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 information sending method or information receiving method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0542] This application also provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the information receiving method applied to the terminal as described above, and the network-side device can be used to perform the steps of the information sending method applied to the network-side device as described above.

[0543] 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.

[0544] 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.

[0545] 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

An information sending method, comprising: A network side device performs first channel measurement on a first signal sent by a terminal to obtain first target information; The network side device sends the first target information to the terminal; The first target information is related information of a first area, and the first area is a partial area of an antenna array of at least one of the network side device and the terminal. The method of claim 1, wherein, The first target information comprises at least one of: First information used to represent a shape of the first area; Second information used to represent a physical position of a unit constituting the first area; Third information used to represent a transformation relationship between the unit constituting the first area and a basic unit; Fourth information used to identify the first area; Fifth information used for precoding information used by the terminal for communication transmission; An association relationship between the fourth information and the fifth information. The method of claim 2, wherein, The first information comprises a first index, and the first index is an index of one or more basic units associated with the first area. The method of claim 3, wherein, The second information comprises a second index used to indicate a physical position of a target unit in an antenna array of the terminal or a logical position of an antenna port, and the target unit is a basic unit corresponding to the first index, or the target unit is a unit having a transformation relationship with the basic unit corresponding to the first index, and the target unit is used to constitute the first area. The method of any one of claims 2-4, wherein, The first target information comprises the fourth information, and the fourth information comprises one or more fourth indexes, each of which corresponds to a first area determined by at least one of the first information, the second information, the third information, and the fifth information. The method of any one of claims 2-5, wherein, The basic unit is predefined by a protocol or configured by the network side device. The method of any one of claims 2-6, wherein, The basic unit comprises at least one of: A two-dimensional visual area used to represent a two-dimensional antenna array area; A one-dimensional visual area used to represent a one-dimensional antenna array area. The method of any one of claims 1-7, wherein Before the network side device performs the first channel measurement on the first signal sent by the terminal, the method further comprises: The network side device receives second target information sent by the terminal, and the second target information comprises at least one of: Position information of at least one of the terminal and the network side device; First parameter configuration information of at least one of the terminal and the network side device used for the first channel measurement; Target parameter configuration information used to obtain at least one of a first measurement quantity, a second measurement quantity, and the fifth information. The method of claim 8, wherein, The first parameter configuration information comprises at least one of: Configuration information of the first signal; Configuration information of an antenna array or an antenna port used for the first channel measurement; A number of the first areas or a first threshold value; An accuracy of the first area or a second threshold value; The first threshold value is a threshold value of the number of the first areas, and the second threshold value is a threshold value of the accuracy of the first area. The method according to claim 8 or 9, wherein The target parameter configuration information comprises at least one of: Indication information for indicating a parameter estimation algorithm; Decision information of the first region; The parameter estimation algorithm is a signal processing algorithm for obtaining at least one of the first measurement quantity, the second measurement quantity, and the fifth information. An information receiving method, comprising: A terminal sends a first signal; The terminal receives first target information sent by a network side device, the first target information being related information of a first region, the first region being a partial region of an antenna array of at least one of the network side device and the terminal. The method of claim 11, wherein, The first target information comprises at least one of: First information for representing a shape of the first region; Second information for representing a physical position of a unit constituting the first region; Third information for representing a transformation relationship between the unit constituting the first region and a basic unit; Fourth information for identifying the first region; Fifth information being precoding information used by the terminal for communication transmission; An association relationship between the fourth information and the fifth information. The method of claim 12, wherein, The first information comprises a first index, the first index being an index of one or more basic units associated with the first region. The method of claim 13, wherein, The second information comprises a second index, the second index being used for indicating a physical position of a target unit in an antenna array of the terminal or a logical position of an antenna port, the target unit being a basic unit corresponding to the first index, or the target unit being a unit having a transformation relationship with the basic unit corresponding to the first index, the target unit being used for constituting the first region. The method of any one of claims 12-14, wherein, The first target information comprises the fourth information, the fourth information comprising one or more fourth indexes, each of the fourth indexes corresponding to a first region, the first region being determined by at least one of the first information, the second information, the third information, and the fifth information. The method of any one of claims 12-15, wherein, The basic unit is predefined by a protocol or configured by the network side device. The method of any one of claims 12-16, wherein, The basic unit comprises at least one of: A two-dimensional visual region for representing a two-dimensional antenna array region; A one-dimensional visual region for representing a one-dimensional antenna array region. The method of any one of claims 11-17, wherein, The method further comprises: The terminal sends second target information to the network side device, the second target information comprising at least one of: Position information of at least one of the terminal and the network side device; First parameter configuration information of at least one of the terminal and the network side device for a first channel measurement, the first channel measurement being used for obtaining the first target information; Target parameter configuration information for obtaining at least one of the first measurement quantity, the second measurement quantity, and the fifth information. The method of claim 18, wherein, The first parameter configuration information comprises at least one of: Configuration information of the first signal; Configuration information of an antenna array or an antenna port used for the first channel measurement; A number of the first regions or a first threshold value; An accuracy of the first region or a second threshold value; The first threshold value is a threshold value of the number of the first areas, and the second threshold value is a threshold value of the accuracy of the first areas. The method of claim 18 or 19, wherein, The target parameter configuration information includes at least one of the following: indication information used for indicating a parameter estimation algorithm; decision information of the first area; The parameter estimation algorithm is a signal processing algorithm used for obtaining at least one of a first measurement, a second measurement and fifth information. An information sending device includes: a processing module configured to perform first channel measurement on a first signal sent by a terminal to obtain first target information; a sending module configured to send the first target information to the terminal; The first target information is related information of a first area, and the first area is a partial area of an antenna array of at least one of the terminal and a network side device. The apparatus of claim 21, wherein The first target information includes at least one of the following: first information used for representing a shape of the first area; second information used for representing a physical position of a unit constituting the first area; third information used for representing a transformation relationship between the unit constituting the first area and a basic unit; fourth information used for identifying the first area; fifth information used for pre-coding information used by the terminal for communication transmission; an association relationship between the fourth information and the fifth information. The apparatus of claim 21 or 22, wherein, The device further includes: a receiving module configured to receive second target information sent by the terminal, the second target information including at least one of the following: position information of at least one of the terminal and the network side device; first parameter configuration information of at least one of the terminal and the network side device used for the first channel measurement; target parameter configuration information used for obtaining at least one of a first measurement, a second measurement and fifth information. An information receiving device includes: a sending module configured to send a first signal; a receiving module configured to receive first target information sent by a network side device, the first target information being related information of a first area, and the first area being a partial area of an antenna array of at least one of the network side device and a terminal. The apparatus of claim 24, wherein The first target information includes at least one of the following: first information used for representing a shape of the first area; second information used for representing a physical position of a unit constituting the first area; third information used for representing a transformation relationship between the unit constituting the first area and a basic unit; fourth information used for identifying the first area; fifth information used for pre-coding information used by the terminal for communication transmission; an association relationship between the fourth information and the fifth information. The apparatus of claim 24 or 25, wherein, The sending module is further configured to: send second target information to the network side device, the second target information including at least one of the following: position information of at least one of the terminal and the network side device; The first parameter configuration information of at least one of the terminal and the network side device is used for first channel measurement, and the first channel measurement is used for obtaining the first target information. Target parameter configuration information is used for obtaining at least one of the first measurement quantity, the second measurement quantity and the fifth information. An electronic device includes a processor and a memory, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the information sending method according to any one of claims 1-10, or implement the steps of the information receiving method according to any one of claims 11-20. A readable storage medium, wherein, The readable storage medium stores programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the information sending method according to any one of claims 1-10, or implement the steps of the information receiving method according to any one of claims 11-20. A computer program / product, wherein, The computer program / program product is executed by at least one processor to implement the steps of the information sending method according to any one of claims 1-10, or implement the steps of the information receiving method according to any one of claims 11-20. An information sending device is configured to implement the steps of the information sending method according to any one of claims 1-10. An information receiving device is configured to implement the steps of the information receiving method according to any one of claims 11-20. A network side device includes a processor and a communication interface, wherein, The communication interface is used for performing first channel measurement on a first signal sent by a terminal to obtain first target information. The communication interface is further used for sending the first target information to the terminal. The first target information is related information of a first area, and the first area is a partial area of an antenna array of at least one of the network side device and the terminal. A terminal includes a processor and a communication interface, wherein, The communication interface is used for sending a first signal. The communication interface is further used for receiving first target information sent by a network side device, the first target information being related information of a first area, and the first area being a partial area of an antenna array of at least one of the network side device and the terminal. A wireless communication system comprising: A terminal and a network side device, the terminal can be used to implement the steps of the information sending method according to any one of claims 1-10, and the network side device can be used to implement the steps of the information receiving method according to any one of claims 11-20. A chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the information sending method according to any one of claims 1-10, or implement the steps of the information receiving method according to any one of claims 11-20.

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