Method for determining sensing base station, SF, communication system and storage medium

Abstract

The invention provides a method for determining a sensing base station, an SF, a communication system, a storage medium and a computer program product. The method comprises the following steps: receiving cell information which is sent by an AMF and corresponds to a sensing target; determining a base station corresponding to the cell information as a sending base station of the sensing signal; and selecting at least one base station from the other base stations according to the distance information between the sending base station and the other base stations, and determining the selected base station as a receiving base station for receiving an echo signal corresponding to the sensing signal. According to the base station selection method in multi-base-station cooperative sensing, the sending base station and the receiving base station participating in cooperative sensing can be dynamically selected, and the sensing performance and the sensing service continuity can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method for determining a perception base station, a SF, a communication system, a storage medium, and a computer program product. Background Art

[0002] Integration of Sensing and Communication (ISAC) is a key technology for 6G and other networks. ISAC technology can greatly improve the spectrum, energy, cost and efficiency of sensing and communication functions by utilizing the same frequency, waveform, and infrastructure to extract target information from scattered echoes while achieving data transmission. In multi-station collaborative sensing, ISAC technology can use one of the base stations participating in collaborative sensing as the base station for sending sensing signals, and the other base stations as base stations for receiving sensing signals. The base station sending the sensing signal sends the sensing signal (downlink) to the sensing target, and the other base stations receive the sensing echo signal (uplink). Base station selection is the basis of multi-base station collaborative sensing and is crucial to the performance of sensing. At present, the existing technology has not provided a technical solution for how to determine the base stations participating in the collaboration in multi-station collaborative sensing. Summary of the invention

[0003] The present disclosure provides a method for determining a perception base station, a SF, a communication system, a storage medium, and a computer program product.

[0004] According to the first aspect of the present disclosure, a method for determining a perception base station is provided, which is applied to a perception function SF, including: receiving cell information corresponding to a perception target sent by an access and mobility management function AMF; determining a base station corresponding to the cell information as a sending base station of a perception signal; and selecting at least one base station from the other base stations based on distance information between the sending base station and other base stations, and determining the base station as a receiving base station for receiving an echo signal corresponding to the perception signal.

[0005] Optionally, the method includes: sending a first instruction to a radio access network RAN, so that the RAN controls the sending base station to start a first base station sensing function BSF and controls the receiving base station to start a second BSF based on the first instruction.

[0006] Optionally, the method includes: receiving perception data corresponding to the perception target and sent by the receiving base station, wherein the second BSF obtains the perception data according to the echo signal.

[0007] Optionally, receiving the perception data corresponding to the perception target and sent by the receiving base station includes: receiving the perception data sent by the receiving base station through the user plane function UPF.

[0008] Optionally, the first BSF sends the perception signal using a signal carrying communication control signaling.

[0009] Optionally, the signal carrying communication control signaling includes at least one of the following signals: DM-RS, CSI-RS and SSB signal.

[0010] Optionally, the perception data is sent to a network data analysis function NWDAF; and an analysis result of the perception data returned by the NWDAF is received.

[0011] Optionally, the perception data and / or the analysis result are sent to a target application through AF.

[0012] Optionally, the perception data includes: the position, speed, and quality data of the echo signal of the perception target; and the analysis result includes: the position, speed, moving direction, and quality information of the echo signal of the perception target.

[0013] Optionally, the method includes: determining whether to reselect the receiving base station based on the analysis result; if it is determined to reselect the receiving base station, selecting a new receiving base station and sending a second instruction to the RAN to replace the receiving base station with the new receiving base station.

[0014] Optionally, the method includes: receiving first switching information sent by the AMF, wherein, in the preparation stage of switching the perception target cell, the AMF sends the first switching information, and the information carried by the first switching information includes new cell information corresponding to the perception target; determining the base station corresponding to the new cell information as a new sending base station for the perception signal; and selecting at least one base station from the other base stations according to the distance information between the new sending base station and other base stations, and determining it as a new receiving base station for receiving the echo signal.

[0015] Optionally, the method includes: receiving second switching information sent by the AMF, wherein, in the execution phase of the perceived target switching cell, the AMF sends the second switching information; sending a third instruction to the RAN, so that the RAN controls the new sending base station to start a third BSF and controls the new receiving base station to start a fourth BSF based on the third instruction.

[0016] Optionally, the method includes: selecting at least one base station from the other base stations based on the distance information between the sending base station and other base stations includes: selecting at least one base station with the shortest distance from the sending base station from the other base stations based on the distance information.

[0017] Optionally, the number of the receiving base stations is two.

[0018] According to the second aspect of the present disclosure, a perception function SF is provided, including: an information receiving module for receiving cell information corresponding to a perception target sent by an access and mobility management function AMF; a sending base station determination module for determining a base station corresponding to the cell information as a sending base station of a perception signal; and a receiving base station determination module for selecting at least one base station from the other base stations based on distance information between the sending base station and other base stations, and determining the base station as a receiving base station for receiving an echo signal corresponding to the perception signal.

[0019] According to a third aspect of the present disclosure, a perception function SF is provided, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the method as described above based on instructions stored in the memory.

[0020] According to a fourth aspect of the present disclosure, a communication system is provided, including: an AMF and the SF as described above.

[0021] According to a fifth aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the instructions are executed by a processor as described above.

[0022] According to a sixth aspect of the present disclosure, a computer program product is provided, wherein the computer program product stores computer instructions, and the instructions are executed by a processor according to the method described above.

[0023] The perception base station determination method, SF, communication system, storage medium and computer program product disclosed in the present invention propose a base station selection method in multi-base station collaborative perception, which can dynamically select sending base stations and receiving base stations participating in collaborative perception, thereby improving the perception performance and continuity of perception services. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present disclosure will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. The above and other purposes and advantages of the present disclosure will be further described below in conjunction with specific embodiments and with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding technical features or components will be represented by the same or corresponding figure marks.

[0025] Figure 1 It is a flowchart of some embodiments of the method for determining a sensing base station according to the present disclosure;

[0026] Figure 2A schematic diagram of a flow chart of base station startup control in some embodiments of the method for determining a sensing base station according to the present disclosure;

[0027] Figure 3 A schematic diagram of a process of obtaining analysis results of perception data in some embodiments of the method for determining a perception base station according to the present disclosure;

[0028] Figure 4 A schematic diagram of a process of selecting a new receiving base station in some embodiments of the method for determining a sensing base station according to the present disclosure;

[0029] Figure 5 A schematic diagram of a flow chart of selecting a base station in other embodiments of the method for determining a sensing base station according to the present disclosure;

[0030] Figure 6 A schematic diagram of a process of switching a new base station in some embodiments of the method for determining a perception base station according to the present disclosure;

[0031] Figure 7A-7C A schematic diagram of base station selection for the method for determining a perception base station disclosed in the present invention.

[0032] Figure 8 is a flowchart of other embodiments of the method for determining a sensing base station according to the present disclosure;

[0033] Fig.9A is a schematic diagram of modules of some embodiments of SF according to the present disclosure; Fig. 9B Schematic diagram of modules of other embodiments of SF according to the present disclosure;

[0034] Fig.10 Schematic diagrams of modules of some further embodiments of SF according to the present disclosure. DETAILED DESCRIPTION

[0035] Exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the embodiments are described in the specification. However, it should be understood that many implementation-specific settings must be made in the process of implementing the embodiments in order to achieve the specific goals of the developer, for example, to meet those restrictions related to the device and the service, and these restrictions may vary depending on the implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this disclosure.

[0036] It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0037] Those skilled in the art can understand that the terms "first" and "second" in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc., and neither represent any specific technical meaning nor indicate the necessary logical order between them.

[0038] It should also be understood that in the embodiments of the present disclosure, “plurality” may refer to two or more than two, and “at least one” may refer to one, two, or more than two.

[0039] It should also be understood that any component, data or structure mentioned in the embodiments of the present disclosure can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.

[0040] In addition, the term "and / or" in the present disclosure is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present disclosure generally indicates that the associated objects before and after are in an "or" relationship.

[0041] It should also be understood that the description of the various embodiments in the present disclosure focuses on the differences between the various embodiments, and the same or similar aspects thereof can be referenced to each other, and for the sake of brevity, they will not be described one by one.

[0042] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0043] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0045] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] In addition, in order to avoid obscuring the present disclosure due to unnecessary details, only the processing steps and / or device structures closely related to at least the scheme according to the present disclosure are shown in the drawings, and other details that are not closely related to the present disclosure are omitted. It should also be noted that similar reference numerals and letters in the drawings indicate similar items, and therefore once an item is defined in one drawing, it does not need to be discussed again for subsequent drawings.

[0047] Among the related technologies known to the inventors, for single-base station ISAC technology, the perception and communication performance are limited due to the existence of problems such as inter-cell interference. Multi-base station cooperative sensing, that is, different base stations cooperate to support wireless sensing, is becoming a method to achieve ultra-precise, high-resolution, and robust wireless sensing. For cooperative ISAC technology, each base station (BS) can receive target reflection signals emitted by other base stations or users, thereby forming multi-static sensing, which can cover a larger area than a single-station ISAC, while providing a wider sensing angle and capturing richer sensing information.

[0048] ISAC technology includes a variety of ways to send and receive perception signals, among which the separation of the sending and receiving of perception signals has a unique advantage in the working mode of the existing communication system because it can avoid the interference of the perception signals themselves. In multi-base station cooperative sensing, the separation of the sending and receiving of perception signals is adopted, and one of the base stations participating in the cooperative sensing can be used as the base station for sending the perception signal, and the other base stations can be used as the base stations for receiving the perception signal.

[0049] In collaborative ISAC technology, it is crucial to determine which base stations participate in the collaboration. For base stations that send perception signals, the signals transmitted by communication data are used to send perception signals; for base stations that receive perception signals, the number of base stations and the signal quality of echo signals have a great impact on the performance of perception; at the same time, during the movement of the perceived target, such as during the flight of a drone, the base stations participating in the collaborative perception also need to be constantly changed. At present, for collaborative ISAC technology, the existing technology has not yet provided a technical solution for how to determine the base stations participating in the collaboration.

[0050] Figure 1 FIG. 1 is a flow chart of some embodiments of the method for determining a sensing base station according to the present disclosure. Figure 1 As shown, the method for determining a sensing base station is applied to SF (Sensing Function), including steps S101 to S103.

[0051] Step S101: receiving cell information corresponding to a sensing target sent by an AMF (Access and Mobility Management Function).

[0052] Step S102: determine the base station corresponding to the cell information as the base station for sending the perception signal.

[0053] The sensing target can be a variety of targets, such as drones, cars, etc. SF is responsible for functions such as controlling the sensing process and receiving sensing measurement data. After the sensing target such as drones and cars accesses the mobile network, AMF sends the cell information of the cellular cell to which the sensing target is connected to SF. The cell information includes the cell ID, etc. SF can use the base station of the cell to which the target is connected as the base station for sending the sensing signal.

[0054] Step S103: According to the distance information between the sending base station and other base stations, at least one base station is selected from other base stations to be determined as a receiving base station for receiving an echo signal corresponding to the perception signal.

[0055] After the wireless network is planned and deployed, the location information of the base station is fixed and can be obtained through a variety of existing methods. SF can select at least one base station with the shortest distance from the sending base station from other base stations to determine it as a receiving base station for receiving the echo signal corresponding to the sensing signal; the number of receiving base stations can be one, two, three, etc. For example, SF selects two base stations with the shortest distance from the sending base station to determine them as receiving base stations.

[0056] The method for determining the perception base station disclosed in the present invention proposes a base station selection method in multi-base station collaborative perception, which can dynamically select the sending base station and the receiving base station participating in the collaborative perception, and can ensure the perception performance and the continuity of the perception service.

[0057] Figure 2 FIG. 1 is a flow chart of base station startup control in some embodiments of the method for determining a sensing base station according to the present disclosure, such as Figure 2 As shown:

[0058] Step S201: Send a first instruction to a RAN (Radio Access Network).

[0059] Step S202: The RAN controls the sending base station to start a first BSF (Base station Sensing Function) based on the first instruction, and controls the receiving base station to start a second BSF.

[0060] The sending base station and the receiving base station are both base stations in the RAN. The BSF is responsible for base station sensing signal processing and other functions; the first instruction can be a variety of instructions, such as a start instruction, etc. The SF sends the first instruction to the RAN to start the BSF of the sending base station and the receiving base station to perform sensing measurements.

[0061] For the base station sending the perception signal, the first BSF selects a signal carrying communication control signaling as the perception sending signal. After the first BSF of the base station sending the perception signal is started, it sends the perception signal to the perception target. The first BSF can use the signal carrying communication control signaling to send the perception signal, and the signal carrying communication control signaling includes at least one of DM-RS (Demodulation Reference Signal), CSI-RS (Channel State Information-Reference Signal) and SSB (Synchronization Signal Block) signals.

[0062] After the second BSF of the receiving base station of the perception signal is started, the second BSF processes the echo signal and extracts the perception data. After receiving the echo signal, the receiving base station of the perception signal processes the signal, extracts the perception data and sends it to the SF, and the SF receives the perception data corresponding to the perception target.

[0063] SF can receive the perception data sent by the base station through UPF (User Plane Function). The perception data includes information such as the position, speed, and quality data of the echo signal of the perception target. The quality data of the echo signal can be the signal strength information of the echo signal. When receiving the echo signal, the receiving base station can measure and record the signal strength information of the echo signal.

[0064] Figure 3 FIG. 1 is a flow chart of obtaining the analysis result of the perception data in some embodiments of the method for determining the perception base station according to the present disclosure, such as Figure 3 As shown:

[0065] Step S301: Send the sensing data to NWDAF (Network Data Analytics Function).

[0066] Step S302: receiving the analysis result of the perception data returned by NWDAF.

[0067] NWDAF can fuse the perception data of multiple receiving base stations for fusion analysis to obtain analysis results, which include the position, speed, moving direction, quality information of echo signals, etc. of the perceived target; the quality information of echo signals can be the signal strength of echo signals received by each receiving base station, etc.

[0068] For example, SF sends the perception data of two receiving base stations to NWDAF, which performs fusion analysis of the perception data and sends the analysis results to SF. In collaborative perception, data from multiple receiving base stations needs to be fused and processed. Since NWDAF has the ability to analyze and process data, the fusion analysis of perception data can be sent to NWDAF for processing, which reduces the requirements for SF and reduces the cost of network construction.

[0069] SF can send the perception data and / or analysis results to the target application through AF (Application Function), and the target application can be various third-party applications.

[0070] Figure 4 FIG. 1 is a flow chart of selecting a new receiving base station in some embodiments of the method for determining a sensing base station according to the present disclosure, such as Figure 4 As shown:

[0071] Step S401: Determine whether to reselect a receiving base station based on the analysis result.

[0072] SF can determine whether to reselect the receiving base station of the perception signal based on information such as the location of the perception target and the quality information of the echo signal in the analysis results.

[0073] Step S402: When it is determined to reselect a receiving base station, a new receiving base station is selected and a second instruction is sent to the RAN to replace the receiving base station with the new receiving base station.

[0074] SF can determine whether to reselect the receiving base station according to the quality information of the echo signal in the analysis result. For example, the quality information of the echo signal includes the signal strength of the echo signal received by the receiving base station; SF can set a signal strength threshold of the echo signal, and if the signal strength of the echo signal is lower than the signal strength threshold, it is determined to reselect the receiving base station corresponding to the echo signal; if the signal strength of the echo signal is greater than or equal to the signal strength threshold, it is determined not to reselect the receiving base station.

[0075] SF can determine whether to reselect the receiving base station based on the position, speed, moving direction and other information of the sensing target in the analysis result. For example, SF can calculate the position of the sensing target when the sensing signal is sent next time based on the position, speed, moving direction and other information of the sensing target, and then calculate the distance L between the receiving base station of the sensing signal and the sensing target.

[0076] The signal strength of the echo signal can be estimated using an existing method based on L and the channel state information of the receiving base station (if the receiving base station obtains the channel state information by measuring the signal, the channel state information is used; if the channel state information cannot be obtained, the channel state information is obtained using an existing channel model). SF can set a signal strength threshold for the echo signal. If the signal strength of the echo signal is lower than the signal strength threshold, it is determined to reselect the receiving base station corresponding to the echo signal; if the signal strength of the echo signal is greater than or equal to the signal strength threshold, it is determined not to reselect the receiving base station.

[0077] A variety of methods can be used to determine the new receiving base station. For example, if the SF determines to reselect the receiving base station, at least one base station with the shortest distance to the sensing target (excluding the base station sending the sensing signal and the original receiving base station) is selected as the new receiving base station. The second instruction can be a variety of instructions, such as a start instruction. After determining the new receiving base station, the SF sends a second instruction to the RAN to replace the receiving base station that needs to be reselected with the new receiving base station; according to the second instruction, the RAN controls the new receiving base station to start its second BSF, and controls the original receiving base station that needs to be reselected to stop its second BSF to ensure the sensing performance.

[0078] Figure 5 FIG. 1 is a flow chart of selecting a base station in some other embodiments of the method for determining a sensing base station according to the present disclosure, such as Figure 5 As shown:

[0079] Step S501, receiving the first switching information sent by the AMF, wherein in the preparation stage of the sensing target switching cell, the AMF sends the first switching information, and the information carried by the first switching information includes the new cell information corresponding to the sensing target.

[0080] Step S502: determine the base station corresponding to the new cell information as a new base station for sending the perception signal.

[0081] Step S503: According to the distance information between the new sending base station and other base stations, at least one base station is selected from other base stations to be determined as a new receiving base station for receiving the echo signal.

[0082] If the sensing target switches cells during the mobile process, in the cell switching preparation phase, the AMF determines the new cell information that the sensing target is connected to and sends it to the SF, and the SF reselects the sending and receiving base stations of the sensing signal. In the cell switching preparation phase, the sensing target is still in the original cell and no cell switching action is performed.

[0083] SF determines the base station of the new cell accessed by the sensing target as the new sending base station for sensing the signal. SF can select two base stations closest to the new sending base station from other base stations based on the distance information between the new sending base station and other base stations as the new receiving base stations for receiving the echo signal.

[0084] Figure 6 FIG. 1 is a flow chart of switching a new base station in some embodiments of the method for determining a sensing base station according to the present disclosure, such as Figure 6 As shown:

[0085] Step S601, receiving the second switching information sent by the AMF, wherein the AMF sends the second switching information during the execution phase of sensing the target switching cell.

[0086] Step S602: Send a third instruction to the RAN, so that the RAN controls the new sending base station to start the third BSF and controls the new receiving base station to start the fourth BSF based on the third instruction.

[0087] In the cell switching execution phase, the sensing target is switched from the original cell to the new cell. In the sensing target switching cell execution phase, the AMF sends the second switching information to the SF; the SF sends the third instruction to the RAN, and the third instruction can be a variety of instructions, such as a start instruction, so that the RAN controls the new sending base station to start the third BSF and controls the new receiving base station to start the fourth BSF based on the third instruction to perform sensing measurement.

[0088] In some embodiments, Fig. 7A As shown, SF receives the cell information sent by AMF that senses the target (drone) access, and determines the base station corresponding to the cell information as the sending base station 71 of the sensing signal. SF selects two base stations with the shortest distance from other base stations based on the distance information between the sending base station 71 and other base stations, and determines them as the receiving base stations 72 and 73 that receive the echo signals corresponding to the sensing signal.

[0089] SF sends the sensing data sent by receiving base stations 72 and 73 to NWDAF, and determines whether to reselect the receiving base station according to the analysis result returned by NWDAF. SF can determine whether to reselect a new receiving base station for the sensing signal according to the quality of the echo signal determined in the current sensing process, or the distance between the position where the target moves and the receiving base station when the sensing signal is sent next time, so as to ensure the sensing performance.

[0090] If the base station for receiving the sensing signal is reselected, an instruction is sent to the RAN to change the base station for receiving the sensing signal. Figure 7B As shown, SF selects a new receiving base station 74 and sends a second instruction to RAN to replace the original receiving base station 72 with the new receiving base station 74.

[0091] like Figure 7C As shown, if the sensing target switches cells during the movement, in the cell switching preparation stage, the AMF sends the first switching information to the SF, and the information carried by the first switching information includes the new cell information corresponding to the sensing target. The SF receives the first switching information sent by the AMF and determines the base station corresponding to the new cell information as the new sending base station 74 of the sensing signal.

[0092] According to the distance information between the sending base station 74 and other base stations, the SF selects two base stations with the shortest distance from other base stations and determines them as the new receiving base station 72 and the new receiving base station 73 that receive the echo signal corresponding to the sensing signal. In the execution phase of sensing the target switching cell, the AMF sends the second switching information to the SF; the SF sends the third instruction to the RAN, so that the RAN controls the new sending base station 74 to start its third BSF based on the third instruction, and controls the new receiving base station 72 and the new receiving base station 73 to start their fourth BSFs respectively, so as to ensure the continuity of sensing.

[0093] Figure 8 FIG. 1 is a flow chart of other embodiments of the method for determining a sensing base station according to the present disclosure, such as Figure 8 As shown:

[0094] Step S801: After the sensing target accesses the base station cell in the RAN, the AMF sends the cell information accessed by the sensing target to the SF.

[0095] Step S802: SF selects a base station.

[0096] SF can use the base station of the access cell of the perception target as the base station for sending the perception signal, and use the two base stations closest to the sending base station as the receiving base stations for the perception signal.

[0097] In step S803 and step 804, the SF sends a start instruction to the RAN through the AMF, which is used to control the sending base station to start the first BSF and control the receiving base station to start the second BSF.

[0098] Step S805: perform perception measurement.

[0099] The base station sending the perception signal sends the perception signal to the perception target; for the base station sending the perception signal, its first BSF selects the signal carrying the communication control signal as the perception transmission signal. For the base station receiving the echo signal, its second BSF performs signal processing after receiving the echo signal and extracts the perception data.

[0100] In step S806 and step S807, the sending base station in the RAN transmits the sensing data to the SF through the UPF.

[0101] Step S808: After receiving the sensing data from multiple receiving base stations, the SF sends the sensing data from multiple receiving base stations to the NWDAF.

[0102] Step S809: NWDAF performs fusion analysis of the perception data.

[0103] Step S810, NWDAF sends the analysis result to SF.

[0104] Step S811, SF selects a base station.

[0105] SF can determine whether to reselect the receiving base station based on the analysis results. For example, SF can determine whether to reselect the receiving base station based on the quality of the echo signal obtained during the current sensing process, or the distance between the target location and the receiving base station when the next sensing signal is sent, so as to ensure the sensing performance.

[0106] In step S812 and step S813, when the SF determines to reselect the receiving base station, it selects a new receiving base station and sends a start instruction to the RAN through the AMF to replace the receiving base station with the new receiving base station.

[0107] Step S814: AMF sends cell change information to SF.

[0108] If the sensing target switches cells during movement, the AMF sends first switching information in the preparation stage of the sensing target switching cells. The information carried by the first switching information includes new cell information corresponding to the sensing target.

[0109] Step S815, SF selects a base station.

[0110] SF determines the base station corresponding to the new cell information as the new sending base station for sensing the signal; SF selects two base stations closest to the new sending base station from other base stations based on the distance information between the new sending base station and other base stations, and determines them as the new receiving base stations for receiving the echo signal.

[0111] In step S816 and step 817, the SF sends a start instruction to the RAN through the AMF, which is used to control the new sending base station to start the third BSF and control the new receiving base station to start the fourth BSF.

[0112] The method for determining the perception base station disclosed in the present invention proposes a base station selection method in multi-base station collaborative perception and in a perception signal transmission and reception separation mode. It can dynamically select the sending base station and the receiving base station participating in the collaborative perception, and can dynamically change the receiving base station of the perception signal using the perception results, thereby improving the performance and reliability of multi-station collaborative perception and improving the continuity of the perception service.

[0113] In some embodiments, Fig.9A As shown, the present disclosure provides a sensing function SF 90, including an information receiving module 91, a sending base station determination module 92 and a receiving base station determination module 93. The information receiving module 91 receives the cell information corresponding to the sensing target sent by the access and mobility management function AMF. The sending base station determination module 92 determines the base station corresponding to the cell information as the sending base station of the sensing signal.

[0114] The receiving base station determination module 93 selects at least one base station from other base stations according to the distance information between the sending base station and other base stations, and determines it as a receiving base station for receiving the echo signal corresponding to the sensing signal. For example, the receiving base station determination module 93 selects at least one base station with the shortest distance from the sending base station from other base stations.

[0115] In some embodiments, Fig. 9B As shown, the present disclosure provides a perception function SF 90', including an information receiving module 91, a sending base station determination module 92 and a receiving base station determination module 93. The perception function SF 90' also includes a base station startup module 94, a perception data processing module 95 and a base station reselection processing module 96.

[0116] The base station activation module 94 sends a first instruction to the radio access network RAN, so that the RAN controls the sending base station to activate the first base station sensing function BSF and controls the receiving base station to activate the second BSF based on the first instruction.

[0117] The perception data processing module 95 receives the perception data corresponding to the perception target, and the second BSF obtains the perception data according to the echo signal. For example, the perception data processing module 95 receives the perception data through the user plane function UPF.

[0118] The perception data processing module 95 sends the perception data to the NWDAF, and receives the analysis result of the perception data returned by the NWDAF. The perception data processing module 95 sends the perception data and / or the analysis result to the target application through the AF.

[0119] The base station reselection processing module 96 determines whether to reselect the receiving base station based on the analysis result; if it is determined to reselect the receiving base station, the base station reselection processing module 96 selects a new receiving base station and sends a second instruction to the RAN to replace the receiving base station with the new receiving base station.

[0120] The base station reselection processing module 96 receives the first switching information sent by the AMF, wherein in the preparation stage of the sensing target switching cell, the AMF sends the first switching information, and the information carried by the first switching information includes the new cell information corresponding to the sensing target.

[0121] The base station reselection processing module 96 determines the base station corresponding to the new cell information as the new sending base station for the perception signal; the base station reselection processing module 96 selects at least one base station from the other base stations according to the distance information between the new sending base station and other base stations, and determines it as the new receiving base station for receiving the echo signal.

[0122] The base station reselection processing module 96 receives the second switching information sent by the AMF, wherein the AMF sends the second switching information during the execution phase of sensing the target switching cell; the base station reselection processing module 96 sends a third instruction to the RAN, so that the RAN controls the new sending base station to start the third BSF and controls the new receiving base station to start the fourth BSF based on the third instruction.

[0123] In some embodiments, Fig.10 As shown, SF may include a memory 1001, a processor 1002, a communication interface 1003 and a bus 1004. The memory 1001 is used to store instructions, the processor 1002 is coupled to the memory 1001, and the processor 1002 is configured to execute the above-mentioned determination method of the sensing base station applied to SF based on the instructions stored in the memory 1001.

[0124] The memory 1001 may be a high-speed RAM memory, a non-volatile memory, etc. The memory 1001 may also be a memory array. The memory 1001 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules. The processor 1002 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the method for determining a sensing base station applied to SF of the present disclosure.

[0125] In some embodiments, the present disclosure provides a communication system, including AMF, SF in any of the above embodiments, etc. The communication system may be a 5G system, a 6G system, or the like.

[0126] In some embodiments, the present disclosure provides a computer-readable storage medium storing computer instructions, which implement the methods in any of the above embodiments when the instructions are executed by a processor.

[0127] Computer readable storage media can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive enumeration) of readable storage media can include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0128] The embodiments of the present disclosure may also be a computer program product, which includes computer program instructions. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present disclosure described in the above “Exemplary Method” section of this specification.

[0129] The method for determining the perception base station, SF, communication system, storage medium and computer program product in the above embodiments propose a base station selection method in multi-base station collaborative perception, which can dynamically select the sending base station and the receiving base station participating in the collaborative perception, and can use the perception results to dynamically change the receiving base station of the perception signal, thereby improving the performance and reliability of multi-station collaborative perception, improving the continuity of the perception service, improving the quality of the perception service, and improving the user experience.

[0130] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0131] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0132] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including," "comprising," "having," and the like are open words, referring to "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or," and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0133] It should also be noted that in the apparatus, device and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0134] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0135] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative and do not limit the scope of the present disclosure. It will be appreciated by those skilled in the art that the above embodiments may be combined, modified or replaced without departing from the scope and essence of the present disclosure.

Claims

1. A method for determining a sensing base station, applied to a sensing function SF, comprising: Receive cell information corresponding to the sensing target sent by the access and mobility management function AMF; Determine a base station corresponding to the cell information as a base station for sending a perception signal; According to the distance information between the sending base station and other base stations, at least one base station is selected from the other base stations and determined as a receiving base station for receiving the echo signal corresponding to the perception signal.

2. The method of claim 1, comprising: A first instruction is sent to a radio access network RAN, so that the RAN controls the sending base station to start a first base station sensing function BSF and controls the receiving base station to start a second BSF based on the first instruction.

3. The method of claim 2, comprising: Receive the perception data corresponding to the perception target and sent by the receiving base station, wherein the second BSF obtains the perception data according to the echo signal.

4. The method of claim 3, wherein: Receiving the perception data corresponding to the perception target sent by the receiving base station includes: The perception data sent by the receiving base station is received through the user plane function UPF.

5. The method of claim 3, wherein: The first BSF sends the perception signal using a signal carrying communication control signaling.

6. The method of claim 5, wherein: The signal carrying the communication control signaling includes at least one of the following signals: DM-RS, CSI-RS and SSB signals.

7. The method of claim 2, wherein: Sending the sensed data to a network data analysis function NWDAF; Receive the analysis result of the perception data returned by the NWDAF.

8. The method of claim 7, comprising: The perception data and / or the analysis result are sent to a target application through AF.

9. The method of claim 7, wherein: The sensing data includes: the position and speed of the sensing target, and the quality data of the echo signal; The analysis result includes: the position, speed, moving direction of the sensed target, and quality information of the echo signal.

10. The method of claim 9, wherein: Determining whether to reselect the receiving base station according to the analysis result; In the case where it is determined to reselect the receiving base station, a new receiving base station is selected and a second instruction is sent to the RAN to replace the receiving base station with the new receiving base station.

11. The method of claim 1, comprising: Receiving first switching information sent by the AMF, wherein in the preparation stage of switching the sensing target cell, the AMF sends the first switching information, and the information carried by the first switching information includes new cell information corresponding to the sensing target; Determine a base station corresponding to the new cell information as a new base station for sending a perception signal; According to the distance information between the new sending base station and other base stations, at least one base station is selected from the other base stations and determined as a new receiving base station for receiving the echo signal.

12. The method of claim 11, comprising: receiving second switching information sent by the AMF, wherein the AMF sends the second switching information during the execution phase of the sensing target switching cell; A third instruction is sent to the RAN, so that the RAN controls the new sending base station to start the third BSF and controls the new receiving base station to start the fourth BSF based on the third instruction.

13. The method of claim 1, wherein: The selecting at least one base station from the other base stations according to the distance information between the sending base station and the other base stations comprises: Among the other base stations, at least one base station having the shortest distance to the sending base station is selected based on the distance information.

14. The method according to any one of claims 1 to 13, wherein: The number of the receiving base stations is two.

15. A perception function SF, comprising: An information receiving module, used to receive cell information corresponding to a sensing target sent by an access and mobility management function AMF; A sending base station determination module, used to determine the base station corresponding to the cell information as a sending base station of the perception signal; The receiving base station determination module is used to select at least one base station from the other base stations according to the distance information between the sending base station and the other base stations, and determine it as the receiving base station that receives the echo signal corresponding to the perception signal.

16. A perception function SF, comprising: Memory; and a processor coupled to the memory, the processor being configured to execute the method according to any one of claims 1 to 14 based on instructions stored in the memory.

17. A communication system comprising: AMF, SF as claimed in claim 15 or 16.

18. A computer-readable storage medium storing computer instructions, wherein the instructions are executed by a processor to execute the method according to any one of claims 1 to 14.

19. A computer program product, wherein the computer program product stores computer instructions, wherein the instructions are executed by a processor to perform the method according to any one of claims 1 to 14.

Images