Communication method and related device

Abstract

Provided in an embodiment of the present application are a communication method and a related device, the communication method comprising: after a network-side device sends a time-frequency resource location of a communication space division signal to a user equipment, the network-side device sends a corresponding communication space division signal at the time-frequency resource location, and the user equipment receives the sensing space division signal sent by the network side equipment according to the time-frequency resource position. The sensing space division signal comprises a sensing space division data signal and a reference signal, the user equipment determines a sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal, and the interference covariance matrix is used for eliminating interference of the sensing data signal to the communication data signal; therefore, the interference of the sensing data signal on the communication data signal can be eliminated.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0002] In communication systems, integrated communication and sensing technology is considered one of the key technologies for expanding the service capabilities of mobile communication networks. The core idea of ​​this technology is to add sensing capabilities to the mobile communication network, building the ability to detect, track, and image targets, thereby integrating communication and sensing capabilities into a single network. The technical principles of sensing differ somewhat from those of communication. Communication involves the transmitter modulating information onto radio waves and sending it to the receiver, which then demodulates the signal to obtain the information. Sensing, however, requires the transmitter to send radio waves in a specific direction. When these radio waves strike the target surface, they create reflected waves (also known as echo signals). The receiver receives and processes these reflected waves to obtain information such as the target's position, speed, and type.

[0003] In practical applications, in order to reduce sensing overhead and improve the throughput of communication systems, the spatial division of communication and sensing technologies is usually adopted, that is, transmitting communication data signals and sensing data signals on the same time and frequency resources. Since the communication data signals and sensing data signals are transmitted on the same time and frequency resources, the sensing data signals interfere with the receiving end of the communication data signals. Summary of the Invention

[0004] This application provides a communication method and related apparatus, which determines the perception interference covariance matrix of the sensing data signal to the communication data signal by using a reference signal in the sensing spatial division signal, and uses the perception interference covariance matrix to eliminate the interference of the sensing data signal to the communication data signal.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] Firstly, a communication method is provided for use in a user equipment, the method comprising:

[0007] Location of time-frequency resources for receiving inductive space-division signals sent by network-side devices;

[0008] The sensing spatial division signal sent by the network-side device is received according to the time-frequency resource location. The sensing spatial division signal includes a sensing spatial division data signal and a reference signal. The sensing spatial division data signal includes a communication data signal and a sensing data signal.

[0009] The perceptual interference covariance matrix of the perceived data signal to the communication data signal is determined based on the reference signal. This perceptual interference covariance matrix is ​​used to eliminate the interference of the perceived data signal in the inductively spaced signal on the communication data signal. Thus, after the network-side device sends the time-frequency resource location of the inductively spaced signal to the user equipment, the network-side device sends the corresponding inductively spaced signal at the time-frequency resource location. The user equipment receives the inductively spaced signal sent by the network-side device according to the time-frequency resource location. The inductively spaced signal includes an inductively spaced data signal and a reference signal. The user equipment determines the perceptual interference covariance matrix of the perceived data signal to the communication data signal in the inductively spaced signal based on the reference signal in the inductively spaced signal. This perceptual interference covariance matrix is ​​used to eliminate the interference of the perceived data signal to the communication data signal, thereby achieving the elimination of the interference of the perceived data signal to the communication data signal.

[0010] In some implementations of the first aspect, before determining the perceptual interference covariance matrix of the perceived data signal to the communication data signal based on the reference signal, the method further includes:

[0011] The network-side device receives the scanning results sent by the network-side device. The scanning results are used to indicate whether the network-side device performs beam scanning of sensing data signals in different sensing spatial division symbols. The time-domain resource locations are different in different sensing spatial division symbols.

[0012] Accordingly, determining the perceptual interference covariance matrix of the perceptual data signal to the communication data signal based on the reference signal includes:

[0013] If the scan result indicates that the network-side device performs beam scanning of sensing data signals on different sensing spatial division symbols, the sensing interference covariance matrix of the sensing data signal on the communication data signal in each of the multiple sensing spatial division symbols is determined based on the reference signals in the multiple sensing spatial division symbols. Thus, if the network-side device performs beam scanning of sensing data signals on different sensing spatial division symbols, the interference of the sensing data signals on the communication data signals may be different for each sensing spatial division symbol. If the scan result sent by the network-side device to the user equipment indicates that the network-side device performs beam scanning of sensing signals at different times; then the user equipment estimates the sensing interference covariance matrix of the sensing data signal on the communication data signal corresponding to each of the multiple sensing spatial division symbols based on the reference signals corresponding to the multiple sensing spatial division symbols. Since the time-domain resource locations corresponding to different sensing spatial division symbols are different, combining the reference signals corresponding to the sensing spatial division symbols at multiple time-domain resource locations to estimate the sensing interference covariance matrix corresponding to each time-domain resource location improves the accuracy of the prediction of the interference of the sensing data signal on the communication data signal, thereby achieving the elimination of the interference of the sensing data signal on the communication data signal.

[0014] Furthermore, if the scan results indicate that the network-side equipment is performing beam scanning of the sensing signal, the user equipment determines the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each sensing spatial division symbol based on the reference signal corresponding to that sensing spatial division symbol. That is, different sensing spatial division symbols have different time-domain resource locations; by determining the sensing interference covariance matrix of the sensing data signal to the communication data signal at each time-domain resource location based on the reference signal corresponding to that time-domain resource location, the accuracy of interference assessment is improved.

[0015] In some implementations of the first aspect, before determining the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal in the sensing spatial division signal, the method further includes:

[0016] The network-side device receives the scanning results sent by the network-side device, and the scanning results are used to indicate whether the network-side device performs beam scanning of sensing data signals at different time-frequency resource locations;

[0017] Accordingly, determining the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal in the sensing spatial division signal includes:

[0018] If the scan result indicates that the network-side device did not perform beam scanning of the sensing data signal in different inductive spatial division symbols, the sensing interference covariance matrix in the spatial division symbol is determined based on the reference signal corresponding to at least one of the inductive spatial division symbols. Thus, if the scan result indicates that the network-side device did not perform beam scanning of the sensing data signal in different inductive spatial division symbols, the user equipment determines the sensing interference covariance matrix of the sensing data signal to the communication data signal for each inductive spatial division symbol based on the reference signal corresponding to any one of the inductive spatial division symbols. Since the interference of the sensing signal to the communication signal is approximately the same when beam scanning is not performed, the interference of the sensing data signal to the communication data signal estimated by the reference signal in one inductive spatial division symbol can be used to determine the interference of the sensing data signal to the communication data signal corresponding to other inductive spatial division symbols.

[0019] In some implementations of the first aspect, the reference signal is a signal transmitted by the network-side device on a specific subcarrier at each time-frequency resource location. The time-frequency resource location of the reference signal is agreed upon so that the reference signal can be received based on that time-frequency resource location.

[0020] In some implementations of the first aspect, the sensing spatial division signal is carried by a physical downlink shared channel (PDSCH), and the PDSCH is configured with a phase tracking signal (PT-RS). The PT-RS is then set as the reference signal, used to estimate the sensing interference covariance matrix of the sensing data signal to the communication data signal. Existing phase tracking signals are used, and these signals can be transmitted in the same symbol as the sensing spatial division signal. That is, the reference signal does not need to occupy a separate symbol; it can share a single sensing spatial division symbol resource with the sensing spatial division signal, reducing the additional overhead of configuring the reference signal.

[0021] In some implementations of the first aspect, if the PDSCH is not configured with a PT-RS, a perception reference signal is transmitted from the subcarrier position corresponding to that PT-RS. This perception reference signal is used as a reference signal to estimate the perception interference covariance matrix of the perceived data signal to the communication data signal. This ensures that the reference signal is located at the same subcarrier position. The perception reference signal (PRS) is a correlation signal specifically designed for environmental sensing.

[0022] In some implementations of the first aspect, the method further includes: receiving a communication signal, the communication signal including a communication data signal and a communication reference signal, and determining a communication interference covariance matrix based on the communication reference signal. The communication interference covariance matrix is ​​used to eliminate interference from the communication data signal, such as interference from communication signals sent by other network-side devices to the user equipment. The time-frequency resource location corresponding to the communication signal is different from the time-frequency resource location corresponding to the sensing space-division symbol. By determining the corresponding communication interference through the communication reference signal in the communication signal, and by determining the interference of the sensing data signal to the communication data signal through PT-RS, sensing reference signals, or other signals, communication interference and sensing interference can be accurately distinguished, and interference elimination can then be performed based on the communication interference and sensing interference.

[0023] Secondly, a communication method is provided, the method comprising:

[0024] Location of time-frequency resources for network-side devices to send inductive space-division signals to user equipment;

[0025] The user equipment receives the time-frequency resource location and receives the sensing spatial division signal according to the time-frequency resource location. The sensing spatial division signal includes a sensing spatial division data signal and a reference signal. The sensing spatial division data signal includes a communication data signal and a sensing data signal.

[0026] The user equipment determines the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal. The sensing interference covariance matrix is ​​used to eliminate the interference of the sensing data signal to the communication data signal in the sensing spatial division signal.

[0027] Thirdly, a communication system is provided, the communication system including network-side equipment and user equipment;

[0028] The location of time-frequency resources used by network-side equipment to send inductive space-division signals to user equipment;

[0029] The user equipment is used to receive the time-frequency resource location and receive the sensing spatial division signal according to the time-frequency resource location. The sensing spatial division signal includes a sensing spatial division data signal and a reference signal. The sensing spatial division data signal includes a communication data signal and a sensing data signal.

[0030] The user equipment is further configured to determine the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal, wherein the sensing interference covariance matrix is ​​used to eliminate the interference of the sensing data signal to the communication data signal in the sensing spatial division signal.

[0031] Fourthly, a communication device is provided, comprising: a processor and a memory, the memory being configured to store computer execution instructions, and the processor being configured to execute the computer execution instructions stored in the memory to cause the device to perform the method described in any one of the first aspects.

[0032] Fifthly, a chip is provided, the chip including at least one processor and a communication interface, the communication interface being coupled to the at least one processor, the at least one processor being configured to run computer programs or instructions to implement the communication method as described in any one of the first aspects; the communication interface being configured to communicate with other modules outside the chip.

[0033] In a sixth aspect, a computer-readable storage medium is provided, wherein instructions are stored therein, which, when executed, implement the communication method described in any one of the first aspects.

[0034] The beneficial effects of each possible implementation of the communication method provided in the second aspect, the communication system provided in the third aspect, the communication device provided in the fourth aspect, the chip provided in the fifth aspect, and the computer-readable storage medium provided in the sixth aspect of the embodiments of this application can be referred to the descriptions of the various possible implementations in the first aspect, and will not be repeated here. Attached Figure Description

[0035] Figure 1AThis is a schematic diagram of a single-station sensing scenario;

[0036] Figure 1B This is a schematic diagram of a dual-station sensing scenario;

[0037] Figure 1C This is a schematic diagram of a dual-station sensing scenario;

[0038] Figure 2 This is a schematic diagram of a synesthetic scene.

[0039] Figure 3 A flowchart illustrating a communication method provided in an embodiment of this application;

[0040] Figure 4 A flowchart illustrating a communication method provided in an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0042] The technical solutions in this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of them.

[0043] First, let's introduce the technical terms used in the embodiments of this application:

[0044] 1. Perception:

[0045] Sensing refers to the detection of parameters of targets in the physical environment, such as the target's position and velocity. For example, a radar detection system detects the position or velocity of a target object by emitting electromagnetic waves and analyzing the echo signals reflected from the target object. Sensing can also be called detection.

[0046] 2. Sensing data signals

[0047] Sensing data signals are signals used to sense (or detect) a target (or object). Sensing data signals are also called detection signals, linear frequency modulated signals, radar signals, radar sensing data signals, radar detection signals, environmental sensing data signals, etc. Sensing data signals can be pulse signals or signals from wireless communication systems. For example, a sensing data signal can be an Orthogonal Frequency Division Multiplexing (OFDM) signal obtained by modulating a specific sequence on a subcarrier. This specific sequence can be any of the following sequences: Zadoff-Chu sequence (ZC sequence), pseudo-random sequence, predefined sequence, etc. Pseudo-random sequences include any of the following sequences: longest linear feedback shift register sequence (m-sequence), Gold sequence, etc. Predefined sequences can be, for example, random data symbols modulated by quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), etc.

[0048] 3. Communication signals

[0049] Communication signals are signals transmitted between communication devices for communication purposes, such as signals transmitted between network devices and terminal devices. For example, signals carried on the physical downlink shared channel (PDSCH).

[0050] 4. Echo signal

[0051] An echo signal is the signal generated when a sensed data signal is reflected by a target. The time delay of the echo signal relative to the sensed data signal reflects the distance between the target and the transmitter. The Doppler shift of the echo signal relative to the sensed data signal reflects the velocity of the target.

[0052] 5. Communication perception fusion signal

[0053] Communication-sensing fusion signal, also known as syn-sensing fusion signal, syn-sensing signal, or syn-sensing integrated signal, is a signal used for both communication and sensing. When used for communication, it can be understood that the signal carries the communication data or communication reference signal sequence that needs to be transmitted between communication devices.

[0054] 6. Objectives

[0055] The target can be any tangible object in the environment that can reflect electromagnetic waves, such as mountains, forests, or buildings, and can also include mobile objects such as vehicles, drones, pedestrians, and terminal devices. The target can also be referred to as a sensed target, a detected target, a sensed object, a sensed device, or a sensed device, etc., and the embodiments of this application are not limited thereto.

[0056] 7. Downlink and Uplink

[0057] Both downlink and uplink are used to indicate the direction of data transmission, such as a channel from a network-side device (e.g., a base station) to a user equipment or a channel from a user equipment to a network-side device.

[0058] 8. Synesthetic space separation

[0059] Inductive spatial division uses multiple antennas at the receiving and transmitting ends to make full use of multipath components in spatial propagation and transmit communication data signals and sensing data signals on the same time and frequency resources.

[0060] 9. Disturbance Covariance (Ruu) Matrix

[0061] This matrix is ​​the covariance matrix of the received interference signal. It is usually obtained by subtracting the covariance matrix of the useful signal from the covariance matrix of all received signals. The receiver can perform interference suppression based on the Ruu matrix.

[0062] 10. Beam Scanning

[0063] Beam scanning refers to adjusting the direction of an antenna's beam to scan space according to a specific pattern, thereby enabling the reception or transmission of signals from different directions. Beam scanning is a common technique in wireless communication and radar systems.

[0064] Integrated sensing and communication (ISAC) is a key technology for expanding the service capabilities of mobile communication networks. The core idea of ​​this technology is to add sensing capabilities to the mobile communication network, building the ability to detect, track, and image targets, thereby integrating communication and sensing capabilities into a single network. Communication involves the transmitter modulating information onto radio waves and sending it to the receiver, which then demodulates the signal to obtain the information. Sensing, on the other hand, involves the transmitter sending radio waves in a specific direction. When these radio waves strike a target surface, they are reflected, and the receiver receives and processes these reflected waves to obtain information such as the target's position, speed, and type.

[0065] Sensing can be categorized into two modes: single-site sensing and dual-site sensing. Single-site sensing involves the same device transmitting and receiving the sensing data signal, such as... Figure 1A As shown, Figure 1A This is a schematic diagram of a single-station sensing scenario. The base station acts as both the transmitter and receiver. The base station sends sensing data signals to the target vehicle and receives the echo signals reflected by the target vehicle. Based on the echo signals, the base station senses the position or speed of the target vehicle. Figure 1B and Figure 1C This is a schematic diagram of a dual-station sensing scenario. Figure 1B and Figure 1C In this system, the transmitting and receiving ends of the sensed data signals are two different devices. Figure 1B In this system, the transmitting end of the sensing data signal is base station A, and the receiving end is base station B; Figure 1C In this system, the transmitting end of the sensing data signal is base station A, and the receiving end is user equipment C. Figure 1A , Figure 1B , Figure 1C The targets in the model are all vehicles, which is easy to understand. The perceived targets can also be other types of targets, such as moving targets (e.g., cars, drones, etc.) and stationary targets (e.g., roads, tall buildings, etc.). Or point targets (e.g., small drones, etc.) and extended multi-point targets (also known as area targets, such as large buildings, etc.).

[0066] Please see Figure 2 , Figure 2 This is a schematic diagram of a sensor-integrated scenario, easy to understand. In addition to transmitting sensing data signals, the transmitting end can also communicate with other devices, thus sending communication data signals to the receiving end. To reduce sensing overhead and improve the throughput of the communication system, sensor spatial division technology is typically used. For example... Figure 2 In this scenario, base station A sends sensing data signals to the target vehicle and communication data signals to user equipment D. User equipment D receives the echo signal reflected from the target vehicle. Base station A sends both sensing and communication data signals on the same time-frequency resource, causing interference between the sensing data signals and the communication data signals received by user equipment D. For example, because the sensing data signals and communication data signals sent by the base station are located on the same time-frequency resource, the sidelobes of the sensing beam of the sensing data signal at the same time-frequency resource location interfere with the communication data signals received by the receiver.

[0067] To address the aforementioned issues, this application provides a communication method in which a network-side device sends the time-frequency resource location of an inductive spatially divided signal to a user equipment (UE). The UE receives the inductive spatially divided signal from the network-side device based on the time-frequency resource location. The inductive spatially divided signal includes an inductive spatially divided data signal and a reference signal. The inductive spatially divided data signal includes communication data signals and sensing data signals. The UE determines the sensing interference covariance matrix of the sensing data signal on the communication data signal based on the reference signal in the inductive spatially divided signal. This is to eliminate the interference of the sensing data signal on the communication data signal in the inductive spatially divided signal based on the sensing interference covariance matrix. This method is based on the reference signal in the inductive spatially divided signal. The reference signal and the inductive spatially divided data signal share a single symbol (or time-frequency resource location), reducing the additional time-frequency resource overhead of configuring the reference signal.

[0068] Easy to understand Figure 2 In this embodiment, user equipment D is a non-sensing receiver device, meaning that user equipment D communicates with base station A, base station A sends sensing data signals, and user equipment C receives the echo signal reflected by the target vehicle; that is, user equipment C acts as a sensing device. It is easy to understand that in other embodiments, user equipment D acts as both a communication receiver communicating with base station A and a sensing receiver. For example, base station A sends sensing data signals, user equipment D receives the echo signal reflected by the target vehicle and also receives the communication data signals sent by base station A, and base station A sends both communication data signals and sensing data signals at the same time-frequency resource location.

[0069] The network-side device in this embodiment is a network-side device with wireless transceiver capabilities. For example, this network-side device can be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a transmission reception point (TRP), a 3GPP later-evolved base station, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The network device can include one or more co-located or non-co-located transmission reception points. Furthermore, the network device can include a central unit (CU), a distributed unit (DU), or both CU and DU. This allows multiple network functional entities to implement some of the functions of the wireless access network device. These network functional entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). For example, in vehicle-to-everything (V2X) technology, the network device can be a roadside unit (RSU). Multiple network devices in a communication system can be base stations of the same type or different types. Base stations can communicate with terminal devices, or they can communicate with terminal devices through relay stations. The network device in this application can also be a device with sensing capabilities, capable of transmitting sensing data signals and receiving and processing echo signals reflected by targets in the environment. In the embodiments of this application, the communication device used to implement the network device's functions can be a network device, a network device with some base station functions, or a device capable of supporting the network device in implementing these functions, such as a chip system, which can be installed within the network device.

[0070] The user equipment in this application embodiment is a user-side device with wireless transceiver capabilities. It can be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, modem, or chip system, etc.) built into the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, etc. For example, a terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. Terminal devices are sometimes referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc.

[0071] The following is combined Figure 3 Please refer to the explanation below. Figure 3 , Figure 3 This is a flowchart illustrating a communication method provided in an embodiment of this application. Figure 3 As shown, the communication methods include: S301 to S303.

[0072] S301. Location of time-frequency resources for the network-side equipment to send the inductive space-division signal to the user equipment.

[0073] In wireless communication, time-frequency resources can be divided into multiple resource elements, which are the smallest units used to carry data symbols. The position of each resource element on the time-frequency resource grid is called the time-frequency resource location. Time-frequency resources can be further distinguished in the frequency domain and the time domain. In the time domain, they can be divided into multiple multicarrier symbols, and each multicarrier symbol can be further divided into multiple subcarriers in the frequency domain. Each subcarrier in each multicarrier symbol represents a resource element. Therefore, the time-frequency resource location can also be represented by coordinates (m, n), where m represents the frequency domain number of the resource element (i.e., the subcarrier number), and n represents the time domain number of the resource element (i.e., the multicarrier symbol number). Here, the time-frequency resource location of the inductively coupled spatial division multiplexing (ICM) signal is the location where the network-side equipment maps the ICM signal to each subcarrier for transmission.

[0074] Each time-frequency resource location has a corresponding inductive spatial division signal, and the network-side device sends the corresponding inductive spatial division signal at each time-frequency resource location.

[0075] Optionally, network-side equipment may transmit the time-frequency resource location of the inductive space-division signal to user equipment via broadcast signals or other means.

[0076] S302. The user equipment receives the time-frequency resource location sent by the network-side device, and receives the inductive spatial division signal sent by the network-side device according to the time-frequency resource location.

[0077] The inductive spatial division signal includes inductive spatial division data signal and reference signal. The inductive spatial division data signal includes communication data signal and sensing data signal. The network-side device sends the inductive spatial division data signal and reference signal at the same time-frequency resource location. For example, the network-side device sends the inductive spatial division data signal and reference signal at the same time domain resource location but different frequency domain resource locations.

[0078] Optionally, the time-frequency resource location includes a first time-frequency resource location and a second time-frequency resource location. The first time-frequency resource location and the second time-frequency resource location have the same time-domain resource location but different frequency-domain resource locations. The user equipment receives the corresponding sensing spatial division data signal at the first time-frequency resource location and receives the corresponding reference signal at the second time-frequency resource location. The frequency-domain resource locations of the first time-frequency resource location and the second time-frequency resource location are different. That is, when the network-side equipment sends the reference signal at the second time-frequency resource location, it does not send signals other than sensing data signals (e.g., it cannot send communication data signals). This allows the user equipment to obtain the reference signal from the sensing spatial division signal according to the different frequency-domain resource locations.

[0079] Optionally, the reference signal has specific characteristics, such as a specific frequency, modulation scheme, or code pattern. The reference signal can also be identified through feature analysis of the inductive spatial division signal. Other separation methods can also be used to obtain the reference signal from the inductive spatial division signal.

[0080] S303. The user equipment determines the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal. This sensing interference covariance matrix is ​​used to eliminate the interference of the sensing data signal in the sensing spatial division signal to the communication data signal.

[0081] Optionally, the network device can send multiple time-frequency resource locations to the user equipment. The network-side device sends a corresponding sensing spatial division signal at each time-frequency resource location. After receiving the sensing spatial division signal corresponding to each time-frequency resource location, the user equipment acquires the signal and determines the sensing interference covariance matrix of the sensing data signal to the communication data signal based on the reference signal in the sensing spatial division signal. This allows the interference of the sensing data signal to the communication data signal in the sensing spatial division signal to be eliminated based on the sensing interference covariance matrix. The reference signal and the sensing data signal in each sensing spatial division signal have the same time-domain resource location but different frequency-domain resource locations. That is, estimating the interference of the sensing data signal to the communication data signal at the same time-domain resource location using the reference signal at the same time-domain resource location improves the accuracy of interference estimation, thereby eliminating the interference of the sensing data signal to the communication data signal.

[0082] It is easy to understand that the communication data signal between the user equipment and the network side equipment is interfered with by the communication signals sent by other network side equipment (inter-cell interference) or by the communication signals sent by the network side equipment to other user equipment (intra-cell interference). By calculating the communication interference covariance matrix of the communication data signal, the interference of the communication signals sent by other network side equipment or the communication signals sent by the network side equipment to other user equipment to the user equipment can be eliminated, thereby realizing the extraction of useful communication data signals from the received communication signals.

[0083] Optionally, the network-side device sends a communication signal to the user equipment, wherein the communication signal may include signals such as communication data signals and communication reference signals. After receiving the communication signal, the user equipment determines the communication interference covariance matrix based on the communication reference signal, and eliminates the interference of communication signals sent by other network-side devices or communication signals sent by the network-side device to other user equipment on the user equipment's communication data signal based on the communication interference covariance matrix.

[0084] Optionally, the time-frequency resource locations corresponding to the communication signal and the inductive spatial division signal are different, that is, the network-side device sends the communication signal and the inductive spatial division signal at different time-frequency resource locations; or, the network-side device does not send the inductive spatial division signal when sending the communication signal.

[0085] Optionally, the network-side device is a base station. After the UE receives the communication signal sent by the base station, it can determine the communication interference covariance matrix corresponding to the communication data signal in the following way;

[0086] First, the communication signal Y received by the UE is:

[0087] Y=Hs+∑ i G i s i +n;

[0088] Where s is the communication reference signal (also known as the pilot signal) in the communication signal, H is the channel between the base station and the UE, which can be obtained by channel estimation based on the communication reference signal, and G... i It is the channel from other base stations (that would cause interference) to the UE, s i It is the signal transmitted by other base stations; n is the noise, and when modeling, the mean of n is 0 and the standard deviation of n is a Gaussian distribution with σ.

[0089] The communication interference and noise signals received by the UE can then be expressed as:

[0090] ∑ i G i s i +n=Y-Hs;

[0091] Then, the communication interference covariance matrix (Ruu) is determined, where Ruu is expressed as:

[0092] Ruu=(∑ i G i s i +n)(∑ i G i s i +m) H ;

[0093] Due to E[s i ]=0,E[s i *s j ]=0,E[s i *s i If ] = 1, then the expression for Ruu can be transformed into:

[0094]

[0095] Where, σ 2 I is the noise power, and I is the identity matrix.

[0096] It is easy to understand that the communication interference covariance matrix corresponding to the communication data signal can also be determined in other ways, and this application does not limit this. It is also easy to understand that the sensing interference covariance matrix corresponding to the sensing data signal can be determined in the above way, that is, by replacing the communication reference signal in the above formula with a reference signal in the sensing spatial division signal, such as PT-RS; of course, the sensing interference covariance matrix of the sensing data signal to the communication data signal can also be determined in other ways. For example, if the reference signal in the embodiments of this application is a sensing reference signal, then after obtaining the sensing reference signal, the sensing interference channel from each base station to the UE is obtained according to the channel estimation algorithm (e.g., least squares method); then, after autocorrelation of the sensing interference channel, the sensing interference covariance matrix corresponding to the sensing data signal can be obtained.

[0097] Optionally, after determining the sensing interference covariance matrix, a filtering algorithm or precoding scheme is determined based on the sensing interference covariance matrix. For example, minimum mean square error (MMSE) filtering or zero-forcing precoding methods can be used. Through filtering or precoding operations, the interference components of the sensing data signal on the communication data signal are reduced or eliminated, thereby eliminating the interference of the sensing data signal on the communication data signal in the inductive spatial division multiplexing signal.

[0098] Thus, after the network-side equipment sends the time-frequency resource location of the sensing spatial division signal to the user equipment, the network-side equipment sends the corresponding sensing spatial division signal at the time-frequency resource location. The user equipment receives the sensing spatial division signal sent by the network-side equipment according to the time-frequency resource location. The sensing spatial division signal includes a sensing spatial division data signal and a reference signal. The user equipment determines the sensing interference covariance matrix of the sensing data signal in the sensing spatial division signal to the communication data signal based on the reference signal in the sensing spatial division signal. The sensing interference covariance matrix is ​​used to eliminate the interference of the sensing data signal in the sensing spatial division signal to the communication data signal, thereby realizing the elimination of the interference of the sensing data signal to the communication data signal.

[0099] Since network-side devices transmit reference signals and sensing spatial division data signals using the same time-domain resources but different frequency-domain resources, the interference of the sensing data signal on the communication data signal can be accurately estimated using each reference signal. The reference signal and its corresponding sensing data signal belong to the same sensing spatial division symbol, that is, the reference signal and sensing data signal of the same sensing spatial division symbol have the same time-domain resources but different frequency-domain resources.

[0100] Since the reference signal and the sensing spatial division data signal have the same time domain resource location but different frequency domain resource location, the network-side equipment can send the reference signal and the sensing spatial division data signal for estimating sensing interference through the same time domain resource, thereby reducing the communication overhead occupied by the reference signal.

[0101] It's easy to understand that, to improve sensing range and capability, network-side equipment performs beam scanning on different WAN and SDI symbols. Each WAN and SDI symbol has a corresponding time-frequency resource location; these locations differ between symbols, while the time-domain resources are identical for the same symbol. Beam scanning requires network-side equipment to transmit sensing data signals in multiple beam directions. The interference generated by the sensing data signals transmitted by the network-side equipment on the communication data signals received by the user equipment at different WAN and SDI symbols varies. To accurately determine the interference of the sensing data signal corresponding to each WAN and SDI symbol on the communication data signals received by the user equipment, the sensing interference covariance matrix of the sensing data signal on the communication data signals can be determined using reference signals across multiple WAN and SDI symbols. Based on the sensing interference covariance matrices of multiple WAN and SDI symbols, the sensing interference covariance matrix for each WAN and SDI symbol can be determined, thereby improving the accuracy of estimating the interference of the sensing data signal on the communication data signals received by the user equipment.

[0102] In some embodiments, prior to S303, the method further includes:

[0103] The network side device receives the scanning results sent by the network side device. The scanning results are used to indicate whether the network side device performs beam scanning of sensing data signals in different sensing spatial division symbols. The time domain resource locations are different in different sensing spatial division symbols.

[0104] Accordingly, S303 includes:

[0105] If the scanning results indicate that the network-side equipment performs beam scanning of the sensing data signal at different sensing spatial division symbols, the user equipment determines the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each sensing spatial division symbol based on the reference signals corresponding to multiple sensing spatial division symbols.

[0106] Thus, if the network-side device performs beam scanning of the sensing data signal in different symbols, the scanning results sent by the network-side device to the user equipment instruct the network-side device to perform beam scanning of the sensing data signal in different symbols. Then, the user equipment estimates the sensing interference covariance matrix in each sensing spatial division signal based on the reference signals of multiple sensing spatial division signals. By combining the reference signals of multiple spatial division symbols, the sensing interference covariance matrix is ​​estimated, which improves the accuracy of estimating the interference of the sensing data signal on the communication data signal, thereby realizing the elimination of the interference of the sensing data signal on the communication data signal.

[0107] Optionally, the network-side equipment can send the scan results to the user equipment via broadcast signals, for example, by sending the scan results to the user equipment via the downlink control channel.

[0108] Optionally, the user equipment determines the perceptual interference covariance matrix of the sensing data signal to the communication data signal corresponding to each of the multiple perceptual spatial division symbols based on the reference signal corresponding to each perceptual spatial division symbol. This includes: the user equipment determining the perceptual interference covariance matrix of the sensing data signal to the communication data signal corresponding to each of the multiple perceptual spatial division symbols based on the reference signal corresponding to each perceptual spatial division symbol, thereby obtaining multiple perceptual interference covariance matrices; and then obtaining the perceptual interference covariance matrix corresponding to each perceptual spatial division symbol based on the multiple perceptual interference covariance matrices.

[0109] Optionally, after obtaining multiple sensing interference covariance matrices, the sensing interference covariance matrix corresponding to each synesthetic spatial symbol can be determined by averaging or other methods.

[0110] For example, within a preset time period, the user equipment receives 50 sensing spatial division signals, each sensing spatial division signal corresponding to a sensing spatial division symbol. That is, the network-side equipment sends the corresponding sensing spatial division signal for each sensing spatial division symbol. After determining the sensing interference covariance matrix based on the reference signal in 30 of the sensing spatial division signals, the average value of the sensing interference covariance matrices corresponding to the 30 sensing data signals is calculated, and this average value is used as the sensing interference covariance matrix corresponding to the 50 sensing spatial division signals, that is, the sensing interference covariance matrix of the sensing data signal corresponding to the communication data signal for each sensing spatial division symbol.

[0111] It is easy to understand that the number of reference signals in S303 above can be a preset ratio, such as the reference signal in 60% of the inductive space-division signals received by the user equipment; it can also be a preset number, such as 30; or it can be a preset rule, such as the reference signal of the inductive space-division signal in the odd position among all the inductive space-division signals received by the user equipment.

[0112] It is easy to understand that the interference of the reference signal corresponding to different inductive spatial division symbols is different. Therefore, in some embodiments, S303 includes: if the scanning result indicates that the network-side device performs beam scanning of the sensing data signal on different symbols, the user equipment determines the sensing interference covariance matrix in the inductive spatial division signal based on the reference signal of each inductive spatial division signal. That is, each inductive spatial division symbol has a corresponding inductive spatial division signal, and the sensing interference covariance matrix of the sensing data signal corresponding to the inductive spatial division symbol on the communication data signal is determined based on the reference signal corresponding to each inductive spatial division symbol, thereby improving the accuracy of interference assessment.

[0113] It is easy to understand that if the sensing range of the network-side equipment is relatively fixed, then the network-side equipment does not need to perform beam scanning on the sensing data signal. If the network-side equipment does not perform beam scanning on the sensing data signal, then the interference of the sensing data signal in the inductive spatial division signal to a specific user equipment is relatively stable, that is, the interference of the sensing data signal corresponding to each inductive spatial division symbol to the communication data signal is roughly the same as the interference on other inductive spatial division symbols. Therefore, there are multiple inductive spatial division symbols. The network-side equipment sends the corresponding inductive spatial division signal on each inductive spatial division symbol, and then can determine the sensing interference covariance matrix of the sensing data signal corresponding to each inductive spatial division symbol to the communication data signal based on the reference signal corresponding to any one of the inductive spatial division symbols. Then, S303 includes: if the scanning result indicates that the network-side equipment did not perform beam scanning on the sensing data signal in different inductive spatial division symbols, the user equipment estimates the sensing interference covariance matrix of the sensing data signal corresponding to each inductive spatial division symbol to the communication data signal based on the reference signal corresponding to any one inductive spatial division symbol. Since the interference of the sensing data signal corresponding to each of the multiple sensing spatial division symbols on the communication data signal is roughly the same, the interference of the sensing data signal corresponding to each sensing spatial division symbol on the communication data signal can be estimated based on the reference signal corresponding to one of the sensing spatial division symbols.

[0114] The reference signal used to determine the perceived interference covariance matrix can be the reference signal sent by the network-side device in the first sensing spatial division symbol among multiple spatial division symbols, or it can be the reference signal sent in a certain sensing spatial division symbol. For example, if the user equipment receives 10 reference signals, the interference estimation can be based on the reference signal received in the 5th spatial division symbol.

[0115] It is easy to understand that if the network-side equipment does not perform beam scanning on the sensing data signal, the sensing interference covariance matrix of the sensing data signal corresponding to each sensing spatial division symbol can be estimated based on the reference signals corresponding to multiple sensing spatial division symbols to improve the accuracy of interference estimation. Then, S303 includes: if the scanning result indicates that the network-side equipment did not perform beam scanning on the sensing data signal in different sensing spatial division symbols, the user equipment determines the sensing interference covariance matrix of the sensing data signal corresponding to each sensing spatial division symbol on the communication data signal based on the reference signals corresponding to multiple sensing spatial division symbols.

[0116] Optionally, after determining the perceptual interference covariance matrix of the sensing data signal to the communication data signal corresponding to a given sensing spatially divided symbol based on the reference signals corresponding to multiple sensing spatially divided symbols, the user equipment can obtain the target perceptual interference covariance matrix by averaging or other methods. The target perceptual interference covariance matrix is ​​the perceptual interference covariance matrix of the sensing data signal to the communication data signal corresponding to each sensing spatially divided symbol. That is, by sending sensing spatially divided signals from the network device, selecting multiple sensing spatially divided symbols, and determining the corresponding perceptual interference covariance matrix based on the reference signals corresponding to the selected sensing spatially divided symbols, the accuracy of the interference covariance matrix can be improved.

[0117] For example, a user equipment receives 10 sensing spatially divided signals sent by a network-side device in 10 sensing spatially divided symbols, selects 5 of these sensing spatially divided symbols, and estimates the corresponding sensing interference covariance matrix based on the reference signal corresponding to the selected sensing spatially divided symbols; thus obtaining 5 sensing interference covariance matrices, the target sensing interference covariance matrix is ​​obtained by averaging the 5 sensing interference covariance matrices.

[0118] Optionally, in the above embodiments, the reference signal may be a signal sent by the network-side device at a specific resource element location, that is, a signal sent by the network-side device at a specific subcarrier at a time-domain resource location, and the user equipment may receive the corresponding reference signal according to the specific subcarrier location.

[0119] Optionally, the reference signal transmitted by the network-side equipment on a specific subcarrier at a time-domain resource location can be an existing signal, such as a phase tracking signal (PT-RS). If the Physical Downlink Shared Channel (PDSCH) is used to carry sensing spatial division signals, and the PDSCH is configured with an existing PT-RS, then the PT-RS is set as the reference signal. The PT-RS is used to estimate the sensing interference covariance matrix. Using an existing phase tracking signal as the reference signal reduces the additional overhead of configuring a reference signal.

[0120] Optionally, if the PDSCH is not configured with PT-RS, the network-side equipment can use the signal transmitted at the subcarrier position corresponding to the PT-RS as the sensing reference signal. For example, the signal transmitted by the network-side equipment at a specific subcarrier in the time-domain resource position through methods such as puncturing can be used as the sensing reference signal. In this way, the network-side equipment transmits the sensing reference signal and the sensing space-division signal in the same sensing space-division symbol. In other embodiments, the reference signal can also be other types of signals, such as signals that can be transmitted in the same symbol as the sensing space-division signal. That is, if the PDSCH is not configured with PT-RS, the signal transmitted by the network-side equipment at the subcarrier position in the time-frequency resource position corresponding to the PT-RS is the sensing reference signal or other signals. The user equipment receives the sensing reference signal or other signals according to the subcarrier position in the time-frequency resource position corresponding to the PT-RS, and estimates the sensing interference covariance matrix based on the sensing reference signal or other signals.

[0121] In some embodiments, the method further includes: receiving a communication signal, the communication signal including a communication data signal and a communication reference signal, and determining a communication interference covariance matrix based on the communication reference signal. This communication interference covariance matrix is ​​used to eliminate communication interference. The time-frequency resource location corresponding to the communication signal is different from the time-frequency resource location corresponding to the sensing space-division symbol. The communication interference of communication signals sent by other network-side devices or communication signals sent by the current network-side device to other user devices on the communication data signal of the current user device is determined by the communication reference signal in the communication signal. The perceived interference of the perceived data signal on the communication data signal of the user device is determined by the PT-RS signal, the sensing reference signal, or other signals. This allows for accurate differentiation between communication interference and perceived interference, and subsequently, interference elimination is performed based on the communication interference and perceived interference.

[0122] Please see Figure 4 , Figure 4 This is a schematic diagram of a communication method provided in an embodiment of this application, such as... Figure 4 As shown, the communication methods include: S401 to S406.

[0123] S401. The network-side equipment sends the time-frequency resource location and scanning results of the inductive spatial division signal to the user equipment.

[0124] The scanning results are used to indicate whether the network-side equipment performs beam scanning of sensing data signals at different time-frequency resource locations.

[0125] Optionally, the network-side device can send the time-frequency resource location and scanning result of the inductive spatial division signal to the user equipment through one message, or it can send the time-frequency resource location and scanning result of the inductive spatial division signal to the user equipment through two different messages respectively.

[0126] S402, The network-side equipment sends communication signals to the user equipment.

[0127] The communication signals include communication reference signals and communication data signals.

[0128] S403, The network-side equipment sends a spatially divided sensor signal to the user equipment.

[0129] Specifically, network-side devices transmit inductive spatial division signals and communication signals at different time-frequency resource locations. That is, when a network-side device transmits a communication signal, it does not transmit an inductive spatial division signal; and when a network-side device transmits an inductive spatial division signal, it does not transmit a communication signal.

[0130] S404. After receiving the communication signal, the user equipment determines the communication interference between cells or within a cell based on the communication reference signal, that is, it determines the communication interference covariance matrix.

[0131] Since communication signals and inductive spatial division signals correspond to different time-frequency resource locations, the interference at the corresponding time-frequency resource location can be determined based on the communication reference signal, i.e., the communication interference covariance matrix. This covariance matrix includes interference during the propagation of the communication signal but excludes interference from the sensed data signal within the inductive spatial division signal. Therefore, the user equipment uses this communication interference covariance matrix to eliminate interference during communication signal transmission.

[0132] S405. The user equipment receives the sensing spatial division signal according to the time-frequency resource location, and determines the sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal. The sensing interference covariance matrix is ​​used to eliminate the interference of the sensing data signal in the sensing spatial division signal to the communication data signal.

[0133] Optionally, if the scanning results indicate that the network-side device performs beam scanning of the sensing data signal at different sensing spatial division symbols, the sensing interference covariance matrix of the sensing data signal corresponding to each sensing spatial division symbol on the communication data signal is determined based on the reference signal corresponding to each sensing spatial division symbol. That is, the sensing interference covariance matrix of the sensing data signal corresponding to each sensing spatial division symbol on the communication data signal is determined using the reference signal corresponding to each sensing spatial division symbol.

[0134] Optionally, if the scan results indicate that the network-side device did not perform beam scanning of the sensing data signal at different sensing spatial division symbols, the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each sensing spatial division symbol is determined based on the reference signals corresponding to several sensing spatial division symbols. That is, the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each sensing spatial division symbol is determined by using the reference signals corresponding to one or more of these sensing spatial division symbols.

[0135] Optionally, if the spatially divided signal is carried by the physical downlink shared channel (PDSCH) and the PDSCH is configured with a phase tracking signal (PT-RS), then the PT-RS is set as the reference signal.

[0136] Optionally, if the PDSCH is not configured with PT-RS, the signal corresponding to the subcarrier position in the time-frequency resource location corresponding to PT-RS is set as the sensing reference signal, and then the sensing reference signal is set as the reference signal; or the signal at the subcarrier position in the time-frequency resource location corresponding to PT-RS is set as another signal, and then the other signal is set as the reference signal. That is, if the PDSCH is not configured with PT-RS, the signal transmitted by the network-side equipment at the subcarrier position in the time-frequency resource location corresponding to PT-RS is a sensing reference signal or another signal. The user equipment receives the sensing reference signal or another signal according to the subcarrier position in the time-frequency resource location corresponding to PT-RS, and estimates the sensing interference covariance matrix based on the sensing reference signal or another signal.

[0137] Optionally, the reference signal is a signal transmitted by the network-side device on a specific subcarrier at each time-frequency resource location.

[0138] S406. The user equipment determines the perceived interference and communication interference based on the perceived interference covariance matrix and the communication interference covariance matrix, so as to eliminate the perceived interference and communication interference.

[0139] In this way, the sensing spatial division signal and the communication signal correspond to different time and frequency resource locations. The corresponding communication interference is determined by the communication reference signal in the communication signal, and the interference generated by the sensing signal is determined by the PT-RS signal or the sensing reference signal. Thus, communication interference and sensing interference can be accurately distinguished, and then interference can be eliminated based on communication interference and sensing interference.

[0140] PT-RS is used for sensing interference estimation without requiring additional communication symbols to configure the reference signal, thus reducing communication overhead.

[0141] If the scanning results indicate that the network-side device performs beam scanning of the sensing data signal at different sensing spatial division symbols, the user can determine the sensing interference covariance matrix of the sensing data signal corresponding to the sensing spatial division symbol on the communication data signal based on the reference signal corresponding to each sensing spatial division symbol, thereby achieving symbol-level interference estimation.

[0142] It should be understood that the above description is merely to help those skilled in the art better understand the embodiments of this application, and is not intended to limit the scope of the embodiments of this application. Based on the examples given above, those skilled in the art can obviously make various equivalent modifications or changes. For example, some steps in the various methods described above may be unnecessary, or new steps may be added. Alternatively, any combination of two or more of the above embodiments may be used. Such modifications, changes, or combinations also fall within the scope of the embodiments of this application.

[0143] It should also be understood that the methods, situations, categories, and classifications of embodiments in this application are for the convenience of description only and should not constitute a special limitation. Various methods, categories, situations, and features in embodiments can be combined without contradiction.

[0144] It should also be understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0145] It should also be understood that the above description of the embodiments of this application focuses on highlighting the differences between the various embodiments. Any similarities or differences not mentioned can be referred to each other. For the sake of brevity, they will not be repeated here.

[0146] The above combination Figures 3-4 The embodiments of the methods provided in this application have been described. The communication device provided in the embodiments of this application is described below. The communication device may be the user equipment or network-side device in the above embodiments.

[0147] This embodiment can divide the communication device into functional modules according to the above method. For example, it can be divided into functional modules corresponding to each function, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0148] It should be noted that the relevant content of each step involved in the above method embodiments can be referenced from the functional description of the corresponding functional module, and will not be repeated here.

[0149] The communication device provided in this application embodiment is used to execute the communication method provided in the above method embodiment, and thus can achieve the same effect as the above implementation method.

[0150] In other embodiments, when using integrated units, the communication device may include a processing module, a storage module, and a communication module. The processing module can be used to control and manage the operations of the communication device. For example, it can be used to support the communication device in executing the steps performed by the processing unit. The storage module can be used to store program code and data, etc. The communication module can be used to support communication between the communication device and other devices.

[0151] The processing module can be a processor or a controller. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module can be a memory. The communication module can specifically be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip, or other devices that interact with other communication devices.

[0152] See Figure 5 , Figure 5 A schematic diagram of the structure of an exemplary communication device according to this application is shown. Figure 5 The communication device shown can execute the steps of any communication method (such as a network-side device or a UE) provided in the embodiments of this application. The hardware structures of the network-side device and the UE in the embodiments of this application can be referred to as follows: Figure 5 The diagram shows the hardware structure of the communication device.

[0153] The communication device 500 includes at least one processor 501, a memory 503, and at least one network interface 504.

[0154] Processor 501 may be, for example, a general-purpose CPU, a digital signal processor (DSP), a network processor (NP), a GPU, a neural network processing unit (NPU), a data processing unit (DPU), a microprocessor, or one or more integrated circuits or application-specific integrated circuits (ASICs) used to implement the solutions of this application, a programmable logic device (PLD), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A PLD may be, for example, a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof. It can implement or execute the various logic blocks, modules, and circuits described in conjunction with the disclosure of this application. A processor may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0155] Optionally, the communication device 500 also includes a bus 502. The bus 502 is used to transmit information between the components of the communication device 500. The bus 502 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 502 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0156] Memory 503 may be, for example, read-only memory (ROM) or other types of storage devices capable of storing static information and instructions; random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions; electrically erasable programmable read-only memory (EEPROM); compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile optical discs, Blu-ray discs, etc.); magnetic disk storage media or other magnetic storage devices; or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. Memory 503 may exist independently and be connected to processor 501 via bus 502. Memory 503 may also be integrated with processor 501.

[0157] Network interface 504 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), or wireless local area network (WLAN). Network interface 504 can include wired network interfaces and wireless network interfaces. Specifically, network interface 504 can be an Ethernet interface, such as Fast Ethernet (FE), Gigabit Ethernet (GE), Asynchronous Transfer Mode (ATM), WLAN, cellular network, or combinations thereof. The Ethernet interface can be an optical interface, an electrical interface, or a combination thereof. In some embodiments of this application, network interface 504 can be used by communication device 500 to communicate with other devices.

[0158] In specific implementations, as some embodiments, processor 501 may include one or more CPUs. Each of these processors may be a single-core processor or a multi-core processor. Here, "processor" may refer to one or more devices, circuits, and processing cores for processing data (e.g., computer program instructions).

[0159] In specific implementations, as some embodiments, the communication device 500 may include multiple processors. Each of these processors may be a single-core processor or a multi-core processor. Here, a processor may refer to one or more devices, circuits, and processing cores for processing data (such as computer program instructions).

[0160] In some embodiments, the memory 503 is used to store program instructions for executing the present application solution, and the processor 501 can execute the program instructions stored in the memory 503. That is, the communication device 500 can implement the method provided in the above-described embodiments through the processor 501 and the program instructions in the memory 503. The program instructions may include one or more software modules. Optionally, the processor 501 itself may also store program instructions for executing the present application solution.

[0161] In specific implementation, the processor 501 in the communication device 500 of this application reads instructions from the memory 503, causing... Figure 5 The communication device 500 shown is capable of performing all or part of the steps in the communication method performed by the communication device in the above embodiments.

[0162] In the above embodiments, each step of the method is implemented through integrated logic circuits in the hardware of the processor of the communication device 500 or through software instructions. The steps of the method embodiments disclosed in this application can be directly implemented by the hardware processor, or implemented by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. Since the storage medium is located in memory, the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method embodiments; to avoid repetition, these will not be described in detail here.

[0163] It should be understood that the aforementioned processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. General-purpose processors can be microprocessors or any conventional processor. It is worth noting that the processor can be a processor supporting the Advanced Reduced Instruction Set Computing (RISC) machine (ARM) architecture.

[0164] Furthermore, in an alternative embodiment, the memory described above may include read-only memory and random access memory, and provide instructions and data to the processor. The memory may also include non-volatile random access memory. For example, the memory may also store device type information.

[0165] The memory can be volatile or non-volatile, or may include both. The non-volatile memory can 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. The volatile memory can be random access memory (RAM), which serves as an external cache. Many forms of RAM are available by way of example, but not limitation. Examples include static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0166] This application also provides a communication system, including a network-side device and a user equipment, wherein the network-side device can execute the steps of any of the communication methods executed by the network-side device provided in this application, and the user equipment can execute the steps of any of the communication methods executed by the user equipment provided in this application.

[0167] In an exemplary embodiment, this application provides a computer program (product) comprising: computer program code, which, when executed by a computer, causes the computer to perform steps in a communication method that can be executed by any of the communication devices provided in this application.

[0168] This application provides a computer-readable storage medium that stores a program or instructions. When the program or instructions are run on a computer, the communication method executed by any of the communication devices provided in this application is executed.

[0169] This application provides a chip, including a processor, for calling and executing instructions stored in a memory, causing a communication device with the chip installed to execute a communication method performed by any of the communication devices provided in this application.

[0170] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive).

[0171] In this application, the terms "first," "second," etc., are used to distinguish identical or similar items with substantially the same function. It should be understood that there is no logical or temporal dependency between "first," "second," and "nth," nor does it limit the quantity or order of execution. It should also be understood that although the following description uses the terms "first," "second," etc., to describe various elements, these elements should not be limited by the terms. These terms are merely used to distinguish one element from another.

[0172] It should also be understood that, in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0173] In this application, the term "at least one" means one or more, and the term "multiple" means two or more. For example, multiple second devices means two or more second devices. The terms "system" and "network" are often used interchangeably herein.

[0174] It should be understood that the terminology used in the description of the various examples herein is for the purpose of describing particular examples only and is not intended to be limiting. As used in the description of the various examples and the appended claims, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0175] It should also be understood that the term "and" as used herein refers to and covers any and all possible combinations of one or more of the listed items. The term "and" describes an association between related objects, indicating that three relationships can exist; for example, A and B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects are in an "or" relationship.

[0176] It should also be understood that the terms “if” and “if” can be interpreted as meaning “when” or “upon”, or “in response to determination” or “in response to detection”. Similarly, depending on the context, the phrases “if determination…” or “if detection [the stated condition or event]” can be interpreted as meaning “when determination…”, or “in response to determination…”, or “when detection [the stated condition or event]” or “in response to detection [the stated condition or event]”.

[0177] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A communication method characterized by comprising: The method is applied to a user equipment (UE), and comprises the following steps: receiving a time-frequency resource position of a common-sensing spatial division signal sent by a network side device; receiving the common-sensing spatial division signal sent by the network side device according to the time-frequency resource position, wherein the common-sensing spatial division signal comprises a common-sensing spatial division data signal and a reference signal, and the common-sensing spatial division data signal comprises a communication data signal and a sensing data signal; determining a sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal, wherein the sensing interference covariance matrix is used to eliminate the interference of the sensing data signal to the communication data signal in the common-sensing spatial division signal.

2. The method of claim 1, wherein, Before the step of determining the sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal, the method further comprises the following steps: receiving a scanning result sent by the network side device, wherein the scanning result is used to indicate whether the network side device performs beam scanning of the sensing data signal in different common-sensing spatial division symbols, and the time domain resource positions of the different common-sensing spatial division symbols are different; correspondingly, the step of determining the sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal comprises the following steps: if the scanning result indicates that the network side device performs beam scanning of the sensing data signal in different common-sensing spatial division symbols, determining the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each common-sensing spatial division symbol according to the reference signal corresponding to the common-sensing spatial division symbol.

3. The method according to claim 1 or 2, characterized in that, Before the step of determining the sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal, the method further comprises the following steps: receiving a scanning result sent by the network side device, wherein the scanning result is used to indicate whether the network side device performs beam scanning of the sensing data signal in different common-sensing spatial division symbols, and the time domain resource positions of the different common-sensing spatial division symbols are different; correspondingly, the step of determining the sensing interference covariance matrix of the sensing data signal to the communication data signal according to the reference signal comprises the following steps: if the scanning result indicates that the network side device does not perform beam scanning of the sensing data signal in different common-sensing spatial division symbols, determining the sensing interference covariance matrix of the sensing data signal to the communication data signal corresponding to each common-sensing spatial division symbol according to the reference signal corresponding to at least one common-sensing spatial division symbol.

4. The method according to any one of claims 1 to 3, characterized in that, The reference signal is a signal sent by the network side device in a specific subcarrier of each time-frequency resource position.

5. The method according to any one of claims 1 to 3, characterized in that, The common-sensing spatial division signal is carried by a physical downlink shared channel (PDSCH), and the PDSCH is configured with a phase tracking signal (PT-RS), wherein the PT-RS is set as the reference signal.

6. The method of claim 5, wherein, If the PDSCH is not configured with the PT-RS, a sensing reference signal is set as the reference signal.

7. A communication system, characterized by The system comprises a network side device and a user equipment (UE); the network side device is used to send a time-frequency resource position of a common-sensing spatial division signal to the user equipment (UE); The user equipment is used to receive the time-frequency resource location and receive the sensing spatial division signal according to the time-frequency resource location. The sensing spatial division signal includes a sensing spatial division data signal and a reference signal. The sensing spatial division data signal includes a communication data signal and a sensing data signal. The user equipment is further configured to determine, based on the reference signal, the perceptual interference covariance matrix of the perceptual data signal to the communication data signal, wherein the perceptual interference covariance matrix is ​​used to eliminate the interference of the perceptual data signal to the communication data signal in the perceptual spatial division signal.

8. A communication device, characterized by The device includes a processor and a memory, the memory being used to store computer execution instructions, and the processor being used to execute the computer execution instructions stored in the memory, so that the device performs the method according to any one of claims 1-6.

9. A chip, characterized by The chip includes at least one processor and a communication interface, the communication interface being coupled to the at least one processor, the at least one processor being used to run computer programs or instructions to implement the communication method as described in any one of claims 1-6; The communication interface is used to communicate with other modules besides the chip.

10. A computer readable storage medium characterized by, The computer-readable storage medium stores instructions that, when executed, implement the communication method as described in any one of claims 1-6.

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