Mobility management method and device, storage medium and program product

Abstract

The invention provides a mobility management method and device, a storage medium and a program product, relates to the technical field of communication, and is beneficial to realizing integration of communication and perception. The method comprises the following steps: after establishing a connection with a terminal, constructing an association relationship between a communication identifier of the terminal and a first sensing identifier; configuring a corresponding general inductance identifier for the association relationship; and performing mobility management on the terminal based on the sensing identifier.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a mobility management method, apparatus, storage medium, and program product. Background Technology

[0002] At the current stage, seamless and ubiquitous collaborative sensing services have been achieved based on widely deployed cellular networks. With the evolution and development of sensing integration technology, the industry's focus and goals have shifted from the initial stage of service coexistence to a stage of higher-level integrated capability collaboration. System optimization design no longer focuses solely on the performance indicators of either communication or sensing; instead, it requires the simultaneous operation of communication and sensing systems. Sensing integration systems no longer provide sensing services in isolation, but rather use sensing services to promote and improve the system's communication quality. Among these, how to manage cooperative terminals with communication capabilities in distributed sensing networks based on sensing-assisted communication is a key technology that must be researched and implemented in sensing integration systems, and also an important research direction for future mobile communication networks. Summary of the Invention

[0003] This disclosure provides a mobility management method, apparatus, storage medium, and program product, which facilitates the integration of communication and sensing. The technical solutions provided by this disclosure are as follows:

[0004] On the one hand, a mobility management method is provided, applied to the first node, the method including:

[0005] After establishing a connection with the terminal, the association between the terminal's communication identifier and the first perception identifier is constructed;

[0006] Configure corresponding synesthetic identifiers for the associated relationships;

[0007] Based on sensory identifiers, mobility management of terminals is carried out.

[0008] On the other hand, a mobility management method is provided for application in a sensory center, the method comprising:

[0009] The terminal's perception report is received from the first node. The terminal's perception report includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal. The terminal's sensing identifier is determined based on the association between the terminal's communication identifier and the first sensing identifier.

[0010] The terminal-based perception report identifies the collaborative nodes that perform collaborative perception on the terminal.

[0011] On the other hand, a mobility management method is provided for application to the second node, the method comprising:

[0012] The terminal's perception report, sent by the sensing center, includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal.

[0013] Determine the second perceptual information that matches the first perceptual information from the perceptual information perceived by the second node;

[0014] Associate the second sensing identifier corresponding to the second sensing information with the terminal's sensing identifier.

[0015] On another front, a mobility management device is provided for use at a first node, the device comprising:

[0016] The processing module is used to construct the association between the terminal's communication identifier and the first perception identifier after establishing a connection with the terminal;

[0017] The processing module is also used to configure corresponding synesthetic identifiers for the association relationships;

[0018] The processing module is also used to manage the mobility of the terminal based on sensor identifiers.

[0019] On another front, a mobility management device is provided for use in a communication center, the device comprising:

[0020] The communication module is used to receive the terminal's perception report sent by the first node. The terminal's perception report includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal. The terminal's sensing identifier is determined based on the association between the terminal's communication identifier and the first sensing identifier.

[0021] The processing module is used to determine the collaborative nodes that perform collaborative sensing on the terminal based on the terminal's perception report.

[0022] On another front, a mobility management device is provided for use in a second node, the device comprising:

[0023] The communication module is used to receive the terminal's perception report sent by the sensing center. The terminal's perception report includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal.

[0024] The processing module is used to determine the second sensing information that matches the first sensing information from the sensing information perceived by the second node;

[0025] The processing module is also used to associate the second sensing identifier corresponding to the second sensing information with the terminal's sensing identifier.

[0026] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the mobility management method of any of the above embodiments when executing the computer program instructions.

[0027] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed on a computer (e.g., a communication device or a mobility management device), implement the mobility management method of any of the above embodiments.

[0028] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the mobility management method of any of the above embodiments.

[0029] The technical solution provided in this disclosure establishes an association between the terminal's communication identifier and a first sensing identifier after establishing a connection with the terminal; configures a corresponding sensing identifier for the association; and performs mobility management of the terminal based on the sensing identifier. In this way, when the communication identifier and the first sensing identifier correspond to the same terminal, the communication identifier and the first sensing identifier are unified into a sensing identifier, promoting deep integration of communication and sensing. This facilitates mobility management of cooperative terminals with communication functions based on sensing-assisted communication, and is beneficial for achieving the integration of communication and sensing. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the architecture of a sensing base station and a sensing center provided in an embodiment of the present disclosure;

[0031] Figure 2 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure;

[0032] Figure 3 A flowchart illustrating a mobility management method provided in this embodiment of the disclosure;

[0033] Figure 4 An interactive flowchart of a mobility management method provided in an embodiment of this disclosure;

[0034] Figure 5 An interactive flowchart of another mobility management method provided in this disclosure embodiment;

[0035] Figure 6 This is a schematic diagram illustrating a practical application scenario of mobility management provided by an embodiment of this disclosure;

[0036] Figure 7 An interactive flowchart illustrating yet another mobility management method provided in this disclosure embodiment;

[0037] Figure 8 This is a schematic diagram illustrating another practical application scenario of mobility management provided by an embodiment of this disclosure;

[0038] Figure 9 This is a schematic diagram of the structure of a mobility management device provided in an embodiment of the present disclosure;

[0039] Figure 10 A schematic diagram of another mobility management device provided in an embodiment of this disclosure;

[0040] Figure 11 A schematic diagram of the structure of yet another mobility management device provided in an embodiment of this disclosure;

[0041] Figure 12 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Detailed Implementation

[0042] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0043] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0044] It should be noted that in this disclosure, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0045] The low-altitude economy is described as a new growth engine for economic development. It primarily focuses on flight activities in airspace below 3000 meters, relying on advanced aviation, communication, and artificial intelligence technologies. Using unmanned aerial vehicles (UAVs) and electric vertical take-off and landing (eVTOL) aircraft as carriers, it is leading transformations across multiple fields and industries, including transportation, logistics, inspection, agricultural and forestry protection, and emergency rescue. As a key technology in the 5G-A / future sixth-generation mobile communication technology phase, sensor-integrated communication is receiving increasing attention from academia, industry, and standardization organizations, with numerous research results already available. Sensor-integrated communication combines communication, sensing, and computing capabilities, ensuring communication services while endowing base stations with sensing and detection capabilities. This enables low-cost, blind-spot-free, and all-weather sensing of low-altitude flying objects, road vehicles, and water vessels. Sensor-integrated technology can strongly support the development of the low-altitude economy, and sensor-integrated base stations are expected to become an important component of the low-altitude economy's infrastructure system.

[0046] In the aforementioned low-altitude economy scenarios, drone delivery and drone inspection are gradually becoming high-commercial-value application scenarios with industry consensus. Related companies are already establishing pilot sites and actively exploring large-scale commercial applications. In these business scenarios, the terminal is typically a drone with communication capabilities, involving movement and communication transmission over long distances. A sensing network based on distributed sensing base stations can achieve both continuous communication and continuous sensing of mobile terminals.

[0047] like Figure 1As shown, the integrated sencing and communication site (ISAC-S) is generally located within the wireless access network, and these base stations form a distributed sensing network. The ISAC-S communicates with and senses terminals, performs communication and sensing signal processing, and maintains information connection channels with other adjacent base stations. Inter-site information exchange can be conducted via the Sn interface, and communication and sensing information reports are then transmitted to the integrated sencing and communication center (ISAC-C) via the S1 interface. The ISAC-C, based on specific communication and sensing requirements, performs process control, resource allocation, and result processing for each base station's communication and sensing operations via the S1 interface. Its location can be within the core network as a sensing network element, a comprehensive network element functional unit, or a collection of multiple network element functional units. Alternatively, it can be located in the central computer room of a specific region, serving as the control and computing center for all base stations in that region.

[0048] Regarding the mobility management process of terminals handing over anchor base stations in a network, there are currently two approaches: communication and sensing. In traditional communication, the terminal measures the channel quality and reports it to the base station, which then makes the handover decision.

[0049] In low-altitude scenarios, drone terminals typically need to move over long distances within the sensor network, necessitating handover of anchor base stations. However, drone terminals move rapidly, and by the time the base station and terminal exchange signaling and transmit measurement reports, the drone terminal's location may have changed significantly, and the current channel quality may differ considerably from that in the measurement report. Furthermore, the low-altitude environment differs greatly from the ground environment; the signal overlap areas of different base stations in the airspace may not only exist in physically adjacent areas. Low-altitude networking solutions are still under research, exploring new methods beyond traditional terrestrial cellular networking, such as fish-scale networking. Therefore, handover based on drone terminal measurement reports may result in unnecessary handovers even when the drone terminal is within the coverage area of ​​a base station, affecting the continuity of information transmission and degrading system performance.

[0050] Current research on sensory integration primarily focuses on cooperative sensing for non-cooperative terminals. In this case, the base station only processes the sensing signals from the terminal, without any communication transmission between them. Mobility management mainly considers the handover of fused sensing sites, i.e., selecting a node that fuses sensing information from multiple sites. However, for cooperative terminals with communication capabilities (valid user equipment, VUE), network mobility management needs to consider not only the handover of fused sensing sites in terms of sensing but also the handover of communication anchor base stations in terms of communication.

[0051] At the current stage, seamless and ubiquitous collaborative sensing services have been achieved based on widely deployed cellular networks. With the evolution and development of sensing integration technology, the industry's focus and goals have shifted from the initial stage of service coexistence to a stage of higher-level integrated capability collaboration. System optimization design no longer focuses solely on the performance indicators of either communication or sensing; instead, it requires the simultaneous operation of communication and sensing systems. Sensing integration systems no longer provide sensing services in isolation, but rather use sensing services to promote and improve the system's communication quality. Among these, how to manage cooperative terminals with communication capabilities in distributed sensing networks based on sensing-assisted communication is a key technology that must be researched and implemented in sensing integration systems, and it is also an urgent need for the large-scale application of sensing integration in the era of 5G-A or future sixth-generation mobile communication technologies.

[0052] In view of this, this disclosure provides a mobility management method, which, after establishing a connection with a terminal, constructs an association between the terminal's communication identifier and a first sensing identifier; configures a corresponding sensing identifier for the association; and performs mobility management on the terminal based on the sensing identifier. In this way, when the communication identifier and the first sensing identifier correspond to the same terminal, unifying the communication identifier and the first sensing identifier into a sensing identifier promotes deep integration of communication and sensing, facilitates mobility management of cooperative terminals with communication functions based on sensing-assisted communication, and promotes the integration of communication and sensing.

[0053] The mobility management method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which the mobility management method provided in this disclosure is applicable include, but are not limited to, New Radio (NR) systems, Long Term Evolution (LTE) systems, various versions of LTE evolution, 5G systems, and Ambient Internet of Things (A-IoT) systems. Furthermore, the mobility management method provided in this disclosure can also be applied to future-oriented communication systems (such as 6G communication systems), and the embodiments of this disclosure are not limited thereto.

[0054] In this embodiment of the disclosure, the communication system may include network-side devices (e.g., including but not limited to base stations) and receiving-side devices (e.g., including but not limited to terminals).

[0055] For example, Figure 2 This disclosure provides a schematic diagram of the architecture of a communication system. For example... Figure 2 As shown, the communication system includes a terminal 10, multiple base stations 20, and a communication center 30.

[0056] In some embodiments, a base station has an information connection channel (referred to as the Sn interface) between itself and its neighboring base stations. The Sn interface is a logical concept; physically, base stations can be connected via wired fiber optic cables, wireless links, or indirect connections through a sensing center. A base station and a sensing center also have an information connection channel (referred to as the S1 interface). The S1 interface is a logical concept; physically, it can be connected via wired fiber optic cables or wireless links.

[0057] In some embodiments, the base station communicates with the terminal and senses the terminal. The base station can perform communication and sensing signal processing, and has information connection channels with other adjacent base stations. It can perform inter-station information exchange based on the Sn interface, and then transmit the communication and sensing information report to the sensing center based on the S1 interface.

[0058] In some embodiments, a base station (BS) can be a macro base station in a cellular network, a distributed cell access node, a base station or evolved Node B (eNB or eNodeB) in LTE, Long Term Evolution Advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. Base stations can include various network-side devices such as macro base stations, micro base stations, femtocell base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISS), routers, relays, transmission reception points (TRPs), wireless fidelity (Wi-Fi) devices, and user equipment (UE). Base stations are sometimes also referred to as inductive base stations, network nodes, etc., but this disclosure does not limit the scope of these terms.

[0059] In some embodiments, the terminal can move within a sensor network composed of distributed base stations.

[0060] In some embodiments, a terminal can be a device with wireless transceiver capabilities. Terminals can be UAVs, vehicles, pedestrians, cooperative terminals, passive devices, ambient IoT devices, mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiments of this disclosure do not limit the application scenarios. Terminals may also be referred to as users, cooperative terminals, user equipment (UE), access terminals, UE units, UE stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, UE terminals, wireless communication devices, UE agents, or UE devices, etc., and the embodiments of this disclosure do not limit these terms.

[0061] In some embodiments, the sensing center, based on specific communication and sensing requirements, performs process control, resource allocation, and result processing for each sensing base station through the S1 interface. Its location can be within the core network as a sensing network element; it can be a comprehensive network element functional unit or a collection of multiple network element functional units. Alternatively, it can be located in the central computer room of a certain region, serving as the control center and computing power center for all sensing base stations in that region. The sensing center can also be referred to as a core network element, network device, network node, etc.

[0062] Unless otherwise specified, the terms "first node," "second node," "first method," "second method," "first approach," "second approach," "first part," "second part," and "third part" in this disclosure are used only for descriptive distinction and do not represent a sequential or chronological order.

[0063] It should be noted that, Figure 2 This is merely an illustrative structural diagram. Figure 2 The number of devices included and the names of each device are unlimited, except for... Figure 2 In addition to the devices shown, the communication system may also include other devices. This disclosure is not limiting.

[0064] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0065] This invention involves communication anchor points and sensing anchor points. In practical deployments, sensing anchor points are generally considered to have both communication and sensing functions, therefore, a unified approach is considered. However, it is also considered that in actual deployments, communication anchor points and sensing anchor points may be physically separate sites, i.e., a dedicated communication base station and a dedicated sensing anchor point are deployed in the network. Therefore, after determining the communication anchor point and sensing anchor point, they can be logically unified into a single sensing anchor point through signaling interaction and information transmission between the communication anchor point base station and the sensing anchor point base station, and by notifying the sensing center.

[0066] This disclosure provides a mobility management method. For example... Figure 3 As shown, the method includes the following steps:

[0067] S101. After establishing a connection with the terminal, the first node constructs the association between the terminal's communication identifier and the first perception identifier.

[0068] In some embodiments, the first node constructs the association between the terminal's communication identifier and the first sensing identifier, including:

[0069] The first node acquires the first movement trajectory associated with the communication identifier sent by the terminal;

[0070] The first node senses the terminal and obtains the second movement trajectory associated with the first sensing identifier;

[0071] When the first movement trajectory matches the second movement trajectory, the first node establishes the association between the terminal's communication identifier and the first perception identifier.

[0072] In some embodiments, the first and second movement trajectories correspond to the same time period. The Euclidean distance between the first and second movement trajectories in three-dimensional space is calculated. When the Euclidean distance is less than a set threshold, the first and second movement trajectories are considered to be matched, meaning that the communication identifier associated with the first movement trajectory and the first sensing identifier associated with the second movement trajectory belong to the same terminal. Thus, the communication identifier and the first sensing identifier are associated, i.e., an association relationship is established between the communication identifier and the first sensing identifier.

[0073] In some embodiments, the first node constructs the association between the terminal's communication identifier and the first sensing identifier, including:

[0074] The first node sends a third movement trajectory associated with the communication identifier to the terminal;

[0075] During the process of the terminal moving based on the third movement trajectory, the first node senses the terminal and obtains the fourth movement trajectory associated with the first sensing identifier.

[0076] When the third and fourth movement trajectories match, the first node establishes the association between the terminal's communication identifier and the first perception identifier.

[0077] In some embodiments, the first node sends a third movement trajectory associated with a communication identifier to the terminal, including: the first node sending indication information to the terminal, the indication information being used to instruct the terminal to move based on the third movement trajectory. The indication information includes the third movement trajectory associated with the communication identifier.

[0078] In some embodiments, the third and fourth movement trajectories correspond to the same time period. The Euclidean distance between the third and fourth movement trajectories in three-dimensional space is calculated. When the Euclidean distance is less than a set threshold, the third and fourth movement trajectories are considered to be matched, meaning the communication identifier associated with the third movement trajectory and the first sensing identifier associated with the fourth movement trajectory belong to the same terminal. Thus, the communication identifier and the first sensing identifier are associated, i.e., an association relationship is established between them.

[0079] In some embodiments, the receiving terminal sends a set of movement trajectories associated with a communication identifier, and the third movement trajectory belongs to the set of movement trajectories.

[0080] S102. The first node configures the corresponding sensory identifier for the association relationship.

[0081] For cooperative terminals with communication capabilities, the sensor network unifies the communication anchor base station and the sensing anchor base station, i.e., the first node of this application, to ensure the consistency of the sensor anchor points. For cooperative terminals with communication capabilities, the anchor base station (i.e., the first node of this application) associates the terminal's communication identifier and sensing identifier with the terminal through communication information interaction and sensing information matching, unifying them into a sensor identifier.

[0082] In this way, when the communication identifier and the first sensing identifier correspond to the same terminal, the communication identifier and the first sensing identifier are unified into a sensing identifier, which promotes the deep integration of communication and sensing. This facilitates the mobility management of cooperative terminals with communication functions based on sensing-assisted communication, and is conducive to realizing the integration of communication and sensing.

[0083] S103. The first node manages the mobility of the terminal based on the sensor identifier.

[0084] In some embodiments, mobility management includes management of switching of sensory anchor points.

[0085] In some embodiments, the first node sends a terminal's perception report to the sensing center; correspondingly, the sensing center receives the terminal's perception report sent by the first node. The terminal's perception report includes the terminal's sensing identifier and first sensing information obtained by the first node through sensing the terminal.

[0086] In some embodiments, the first sensing information includes at least one of the following: the terminal's movement trajectory location information, the terminal's movement speed, and the terminal's sensing channel quality. The sensing channel quality may include the signal-to-noise ratio (SNR) of the sensing signal. The sensing channel quality may also be referred to as the sensing channel quality indicator (S-CQI).

[0087] The first node in this disclosure can be a sensing anchor base station, which has the ability to communicate and sense with the terminal. The first node may also have other names, such as source sensing anchor, source sensing base station, source anchor base station, etc., and this disclosure does not limit this.

[0088] For example, a terminal (also known as a cooperative terminal), when within a sensor network, can both establish a communication connection with the first node and be sensed and detected by the first node. The sensor network needs to ensure the consistency of the terminal's communication identifier and sensing identifier, as well as the consistency of its communication anchor point and sensing anchor point. For example... Figure 4 As shown, a mobility management method is provided, including the following steps:

[0089] Step 1: The terminal establishes a communication connection with the first node and accesses the sensor network.

[0090] Step 2: The first node it connects to is established as the communication anchor point of the terminal, and the communication identifier of the terminal is generated.

[0091] Step 3: The first node senses the terminal and generates first sensing information and a first sensing identifier. The first sensing information includes the terminal's movement trajectory and the S-CQI between the first node and the terminal.

[0092] Step 4: Establish the association between the terminal's communication identifier and the first sensing identifier; configure the corresponding sensing identifier for the association. This can be established by the first node through communication information interaction and sensing information matching with the terminal. For details, please refer to the description in the above embodiments or examples, which will not be repeated here.

[0093] Step 5: The first node sends a perception report to the sensing center; correspondingly, the sensing center receives the perception report sent by the first node. The perception report includes the sensing identifier and the first sensing information.

[0094] Understandably, when a terminal is in a sensory network, after the sensory center determines its corresponding first node and receives the terminal's perception report sent by the first node, the sensory center can further select its corresponding cooperative node to cooperate with the first node in sensing the terminal.

[0095] In some embodiments, Figure 5 Provide a mobility management method, such as Figure 5 As shown, the method includes the following steps:

[0096] S201. The sensing center determines the collaborative nodes for collaborative sensing of the terminal based on the terminal's perception report.

[0097] The relevant content included in the terminal's perception report can be found in the descriptions in the above embodiments or examples.

[0098] S202, the sensing center sends the relevant information of the first node and the perception report of the terminal to the collaborating node; correspondingly, the collaborating node receives the relevant information of the first node and the perception report of the terminal sent by the sensing center.

[0099] The terminal's perception report includes the terminal's sensing identifier and the first perception information obtained by the first node through sensing the terminal.

[0100] The relevant information of the first node includes at least one of the following: the location information of the first node and the identification information of the first node.

[0101] S203, the cooperating node determines the second sensing information that matches the first sensing information from the sensing information perceived by the cooperating node; the cooperating node associates the second sensing identifier corresponding to the second sensing information with the terminal's sensing identifier.

[0102] Among them, the collaborative nodes include the aforementioned second node, that is, the second node receives the relevant information of the first node and the perception report of the terminal sent by the sensing center. The second node can determine the second perception information that matches the first perception information from the perception information perceived by the second node; the second node associates the second perception identifier corresponding to the second perception information with the sensing identifier of the terminal.

[0103] The second sensing information includes the terminal's movement trajectory, S-CQI between collaborating nodes and terminals, etc.

[0104] S204. The sensing center sends a cooperation instruction to the first node and the cooperating node; correspondingly, the first node and the cooperating node receive the cooperation instruction sent by the sensing center.

[0105] The cooperation instruction is used to instruct the first node and the cooperation node to cooperate in sensing the terminal. The sensing center can send cooperation instructions to the first node and the cooperation node separately, or it can send cooperation instructions to the first node and the cooperation node simultaneously; this disclosure does not impose any restrictions on this.

[0106] In some embodiments, the sensing center sends configuration information and location information of the collaborating nodes to the first node; correspondingly, the first node receives the configuration information and location information of the collaborating nodes sent by the sensing center. It is understood that this operation can be performed simultaneously with the sensing center sending a collaboration command to the first node. This allows the first node to subsequently determine, based on the configuration information and location information of the collaborating nodes, the target sensing anchor point (i.e., the subsequent second node) that the terminal needs to switch to after moving. The configuration information of the collaborating nodes includes their resource configuration information.

[0107] S205, the cooperating node sends the terminal's second sensing information to the first node; correspondingly, the first node receives the terminal's second sensing information sent by the cooperating node.

[0108] In some embodiments, the second sensing information is obtained by the cooperating node sensing the first node. The second sensing information includes at least one of the following: the terminal's movement trajectory location information, the terminal's movement speed, and the terminal's sensing channel quality.

[0109] S206. The first node fuses the terminal's first sensing information and the terminal's second sensing information to obtain fused sensing information.

[0110] S207. The first node sends fusion sensing information to the collaborating nodes and the sensing center; correspondingly, the collaborating nodes and the sensing center receive the fusion sensing information sent by the first node.

[0111] Based on this, by selecting cooperative nodes to collaborate with the first node in sensing the terminal, the efficiency of terminal sensing is improved. Simultaneously, the fused sensing information obtained through collaborative sensing can enhance auxiliary communication measurement information, assisting the first node in making handover decisions and preparing for subsequent switching of the sensing anchor point. The process by which the first node or cooperative nodes acquire sensing information using a self-initiated and self-receiving sensing mode eliminates the need for signaling interaction, resource allocation, and information transmission with the terminal, effectively ensuring the real-time and robustness of channel quality information acquisition. This also guarantees the effectiveness, real-time performance, and robustness of the subsequent handover process.

[0112] It is understandable that sensing base stations possess sensing capabilities, and their communication and sensing signal coverage areas are essentially the same in design. The generation and transmission methods of sensing signals are also similar to those of communication signals. Therefore, sensing channel quality can also characterize wireless communication channel quality, and anchor base stations can utilize the sensing information of neighboring base stations regarding the terminal to make handover decisions. If the base station adopts a self-transmitting and self-receiving sensing mode to obtain sensing information, then there is no need for signaling interaction, resource allocation, and information transmission between the base station and the terminal, effectively ensuring the real-time and robustness of channel quality information acquisition. During the deployment of a sensing network, the sensing capabilities and sensing range of each sensing base station need to be registered with the sensing center. Therefore, when a terminal is in a sensing network, after determining its anchor base station, the sensing center can further select its corresponding cooperating base stations to cooperate with the anchor base station in sensing the terminal.

[0113] For example, such as Figure 6 As shown, the distributed sensing network deploys four sensing base stations, with adjacent stations connected by Sn interface links. A drone (UAV) cooperative terminal is flying in the sensing network at position 1. It establishes a connection with a sensing base station via a communication link, accesses the sensing network, and is simultaneously detected by the sensing base station. The following describes in detail the process of the UAV establishing an anchor base station for accessing the sensing network and the sensing network's process of cooperating and sensing the UAV, including the following steps:

[0114] Step 1: The cooperative terminal UAV has communication capabilities, establishes a communication connection with the sensing base station ISAC-S1, and accesses the sensing network.

[0115] Step 2: The connected sensing base station ISAC-S1 is determined as the anchor base station of the cooperative terminal, and the communication identifier of the UAV (hereinafter referred to as ID) is generated, with the number C-1-1.

[0116] Step 3: The anchor base station senses the UAV, generating sensing information and the UAV's sensing ID, numbered S-1-1. The sensing information includes the UAV's movement trajectory, the sensing channel quality between the UAV and the anchor base station, etc. The sensing channel quality can be the signal-to-noise ratio of the sensing signal, for example, 20dB.

[0117] Step 4: The UAV is equipped with a high-precision GPS measuring instrument and transmits its movement trajectory to the anchor base station via the communication link, associating it with the communication ID. Simultaneously, the anchor base station senses the UAV, obtains its movement trajectory, and associates it with the sensing ID. The anchor base station matches the movement trajectory associated with the communication ID with the movement trajectory associated with the sensing ID. For movement trajectories obtained in both ways at the same time, the Euclidean distance in three-dimensional space is calculated. If the result is less than a preset threshold, the movement trajectories are considered a match, meaning the communication ID and sensing ID belong to the same cooperating terminal. Thus, the UAV's communication ID and sensing ID are associated and unified into a single sensing ID, numbered CS-1-1.

[0118] Step 5: The anchor base station ISAC-S1 reports the UAV's sensing ID (number CS-1-1) and sensing information to the sensing center.

[0119] Step 6: Based on the sensing ID and sensing information reported by the anchor base station ISAC-S1, the sensing center ISAC-C determines the corresponding cooperating base stations as ISAC-S2 and ISAC-S4, and transmits ISAC-S1 as the anchor base station and the corresponding sensing ID and sensing information to the cooperating base stations ISAC-S2 and ISAC-S4.

[0120] Step 7: The cooperating base stations ISAC-S2 and ISAC-S4 match the sensing information transmitted by the sensing center with their own sensing information. ISAC-S2 detects the UAV's sensing ID as S-2-1, which is associated with the sensing ID CS-1-1. ISAC-S4 detects the UAV's sensing ID as S-4-1, which is associated with the sensing ID CS-1-1.

[0121] Step 8: The Sensing Center ISAC-C notifies the anchor base station ISAC-S1 and the corresponding cooperating base stations ISAC-S2 and ISAC-S4 to perform a cooperative sensing process for the UAV. The information sent to the anchor base station ISAC-S1 also includes the location coordinates of the cooperating base stations ISAC-S2 and ISAC-S4.

[0122] Step 9: The cooperating base stations ISAC-S2 and ISAC-S4 send the UAV's perception information to the anchor base station ISAC-S1. The anchor base station ISAC-S1 then merges its own perception information of the UAV with the perception information of the UAV from each cooperating base station to obtain the merged perception information.

[0123] Step 10: Anchor base station ISAC-S1 reports the fused sensing information to the sensing center ISAC-C, and also sends it to each cooperating base station ISAC-S2 and ISAC-S4.

[0124] For cooperative terminals with communication capabilities, their communication anchor base station can be determined and their communication ID obtained when they access the network based on the communication protocol. Simultaneously, each base station in the network can also perform cooperative sensing, determine the corresponding fusion sensing node (hereinafter referred to as the sensing anchor base station), and perform fusion processing of sensing information, assigning it a sensing ID. The network needs to unify the communication ID and sensing ID of the cooperative terminal, and also unify its corresponding communication anchor base station and sensing anchor base station. Therefore, the mobility management of cooperative terminals by the sensory network ensures the consistency of their sensory ID (unified communication ID and sensing ID) and the consistency of their sensory anchor point (unified communication anchor base station and sensing anchor base station) during the cooperative terminal's access to the network and movement, and performs sensory anchor point switching. However, how to use sensing-assisted communication methods for mobility management of cooperative terminals by the sensory network is still relatively unexplored in the industry. The following is a detailed introduction to the mobility management of terminals by the sensory network based on sensing-assisted communication methods.

[0125] Understandably, the first node receives and fuses the sensory information from each collaborating node, while also using each collaborating node as a set of candidate synesthetic anchor points. When the switching conditions are met, a suitable collaborating node is selected from the set of candidate synesthetic anchor points as the second node, and the corresponding switching process is initiated.

[0126] In some embodiments, mobility management includes management of the switching of sensory anchor points, such as... Figure 7 As shown, step S103 can be implemented as follows:

[0127] S301, the first node sends a first request message to the sensing center; correspondingly, the sensing center receives the first request message sent by the first node.

[0128] The first request message requests that the terminal's sensing anchor point be switched from the first node to the second node, where the second node is a collaborating node. The specific method for determining the collaborating node can be found in the above embodiments or examples, and will not be repeated here.

[0129] The second node in this disclosure may also have other names, such as target sensing anchor point, target anchor point base station, etc., and this disclosure does not limit this.

[0130] The first request message includes a sensor identifier. The first request message may also have other names, such as a handover request, and this disclosure does not limit its usage.

[0131] In some embodiments, the first request message may also include relevant information about the second node, which may include at least one of the following: location information of the second node and identification information of the second node.

[0132] It is understood that the first node can make a decision on switching the sensor anchor point of the terminal based on at least one of the following: the communication channel quality between the first node and the terminal (also known as the communication channel quality indicator (C-CQI)), the first sensing information, the second sensing information, the location information of the first node, the location information of the second node, and the anchor point switching conditions.

[0133] In some embodiments, when the anchor point switching conditions are met, the first node sends a first request message to the sensing center. The anchor point switching conditions include at least one of the following:

[0134] The communication channel quality between the first node and the terminal is less than the first threshold.

[0135] The quality of the sensing channel between the first node and the terminal is less than the second threshold.

[0136] The quality of the sensing channel between the cooperating node and the terminal is greater than the third threshold.

[0137] The quality of the sensing channel between the cooperating node and the terminal is greater than the sum of the quality of the sensing channel between the first node and the terminal and the fourth threshold.

[0138] The distance between the first node and the terminal is greater than the fifth threshold.

[0139] The distance between the collaborating node and the terminal is less than the sixth threshold;

[0140] The distance between the first node and the terminal is greater than the sum of the distance between the collaborating node and the terminal and the seventh threshold.

[0141] In some embodiments, the second node satisfies at least one of the following:

[0142] The second node is a cooperative node whose sensing channel quality with the terminal is greater than the third threshold.

[0143] The second node is a cooperative node whose perceived channel quality with the terminal is greater than the sum of the perceived channel quality between the first node and the terminal and the fourth threshold.

[0144] The second node is a collaborative node whose distance from the terminal is less than the sixth threshold.

[0145] The second node is a collaborative node whose distance to the terminal plus the seventh threshold is less than the distance between the first node and the terminal.

[0146] The aforementioned distance, also known as spatial distance, is determined based on the location coordinates of the nodes. For example, the distance between the first node and the terminal is determined based on the location coordinates of the first node and the location coordinates of the terminal.

[0147] Understandably, if multiple cooperating nodes in the candidate sensing anchor point set meet the above conditions, the first node can select one of the cooperating nodes as the second node based on certain conditions, such as selecting the cooperating node with the highest sensing channel quality among all cooperating nodes that meet the above conditions as the second node.

[0148] S302, the sensor center sends a second request message to the second node; correspondingly, the sensor center receives the second request message sent by the second node.

[0149] The second request message is used to request a switch of the terminal's sensing anchor point from the first node to the second node. The second request message may also have other names, such as a switching request, and this disclosure does not limit its usage.

[0150] S303, the second node sends a second response message to the sensing center; correspondingly, the second node receives the second response message sent by the sensing center.

[0151] The second response message indicates that the second node agrees to act as the communication anchor point for the terminal. The second response message includes the resource configuration information of the second node.

[0152] S304, the sensing center sends a first response message to the first node; correspondingly, the first node receives the first response message sent by the sensing center.

[0153] The first response message indicates that the second node agrees to act as the communication anchor point for the terminal. The first response message includes the resource configuration information of the second node, specifically the resource configuration information of its communication link.

[0154] S305, the first node sends a handover command and the resource configuration information of the second node to the terminal; correspondingly, the terminal receives the handover command sent by the first node and the resource configuration information of the second node.

[0155] The switching command is used to instruct the terminal to switch the sensing anchor point from the first node to the second node.

[0156] S306. The terminal and the second node establish a communication connection, and the second node is established as the new sensory anchor point of the terminal.

[0157] S307. The second node sends a handover completion confirmation message to the sensing center; correspondingly, the sensing center receives the second handover completion command sent by the second node.

[0158] The second handover completion information indicates that the terminal has successfully switched the sensing anchor point from the first node to the second node.

[0159] S308(a) The sensing center sends a handover completion command to the first node; correspondingly, the first node receives the handover completion command sent by the sensing center.

[0160] S308(b) The sensing center sends a handover completion command to the second node; correspondingly, the second node receives the handover completion command sent by the sensing center.

[0161] S308(c) The sensing center sends a handover completion command to all cooperating nodes except the second node; correspondingly, all cooperating nodes except the second node receive the handover completion command sent by the sensing center.

[0162] The aforementioned switch completion instruction is used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node and / or to indicate the cessation of collaborative sensing of the terminal.

[0163] Based on this, this disclosure achieves mobility management of cooperative terminals with communication capabilities through a distributed sensing network by means of signaling interaction and information processing between the sensing anchor point and the sensing center, including the process of establishing the source sensing anchor point (i.e., the first node) for terminal access to the sensing network, the sensing center's collaborative sensing process for the terminal, and the sensing center's sensing anchor point switching process for the terminal. It unifies the corresponding communication and sensing information of the terminal and enhances the auxiliary communication measurement information using the sensing measurement information of the cooperative nodes, thus realizing the switching of the sensing anchor point and ensuring the effectiveness, real-time performance, and robustness of the channel quality information and the switching process.

[0164] For example, such as Figure 8 As shown, when a cooperative terminal (UAV) moves from location 1 to location 2 in the sensor network, it involves the switching of the sensor anchor point, i.e., the sensor network's mobility management of the UAV, which specifically includes the following steps:

[0165] Step 1: The source anchor base station ISAC-S1 obtains the communication channel quality indicator (C-CQI) of 6dB reported by the UAV, the source anchor base station's sensing information and sensing channel quality indicator (S-CQI) for the UAV (S-CQI = 5dB), the cooperating base station ISAC-S2's sensing information and sensing channel quality indicator (S-CQI) for the UAV (S-CQI = 20dB), the cooperating base station ISAC-S4's sensing information and sensing channel quality indicator (S-CQI) for the UAV (S-CQI = 15dB), and the location coordinates of the cooperating base stations ISAC-S2 and ISAC-S4. The anchor point handover condition considers a combination of the following four conditions, i.e., all four conditions must be met simultaneously:

[0166] (1) The communication channel quality indication reported by the source anchor base station to the cooperating terminal is less than the set threshold of 10dB.

[0167] (2) The perceived channel quality indication of the source anchor base station is less than the set threshold of 10dB.

[0168] (3) The perceived channel quality indication of the cooperative base station is greater than the set threshold by 10dB.

[0169] (4) The perceived channel quality indicator of the cooperating base station is greater than the sum of the perceived channel quality indicator of the source anchor base station and the set threshold of 5dB.

[0170] Based on the aforementioned anchor point switching conditions and threshold settings, it can be seen that both cooperating base stations ISAC-S2 and ISAC-S4 meet the aforementioned anchor point switching conditions. Since the perceived channel quality indicator of cooperating base station ISAC-S2 is higher than that of ISAC-S4, the source anchor base station ISAC-S1 selects cooperating base station ISAC-S2 as the target anchor base station.

[0171] Step two: After the source anchor base station ISAC-S1 makes the handover decision, it sends a first request message to the sensing center ISAC-C. The first request message requests that the sensing anchor point of the UAV be switched from the source anchor base station ISAC-S1 to the target anchor base station ISAC-S2. The first request message includes the sensing identifier corresponding to the UAV and relevant information of the target anchor base station ISAC-S2, such as the location information and identification information of the UAV.

[0172] Step 3: The sensing center ISAC-C sends a second request message to the target anchor base station ISAC-S2. The second request message is used to request that the sensing anchor point of the UAV be switched from the source anchor base station ISAC-S1 to the target anchor base station ISAC-S2.

[0173] Step four: The target anchor base station ISAC-S2 sends a second response message to the sensing center ISAC-C. The second response message indicates that the target anchor base station ISAC-S2 agrees to act as the sensing anchor point for the UAV. The second response message includes the resource configuration information of the target anchor base station ISAC-S2.

[0174] Step 5: The communication center ISAC-C sends a handover command and the resource configuration information (including communication link resource configuration) of the target anchor base station ISAC-S2 to the source anchor base station ISAC-S1.

[0175] Step 6: The source anchor base station ISAC-S1 sends a handover command and the resource configuration information (including communication link resource configuration) of the target anchor base station ISAC-S2 to the cooperating terminal UAV.

[0176] Step 7: The cooperating terminal UAV establishes a communication connection with the target anchor base station ISAC-S2 and designates the target anchor base station ISAC-S2 as the new anchor base station for the cooperating terminal UAV.

[0177] Step 8: The target anchor base station ISAC-S2 sends a handover completion confirmation message to the sensing center ISAC-C. The second handover completion message indicates that the terminal has successfully switched the sensing anchor point from the source anchor base station ISAC-S1 to the target anchor base station ISAC-S2.

[0178] Step 9: The Sensing Center ISAC-C sends a handover completion instruction to the source anchor base station ISAC-S1 and each cooperating base station ISAC-S2 and ISAC-S4. The handover completion instruction is used to indicate that the cooperating terminal UAV has successfully switched the sensing anchor point from the source anchor base station ISAC-S1 to the target anchor base station ISAC-S2 and / or to indicate the cessation of cooperative sensing for the cooperating terminal UAV.

[0179] It is understandable that the handover process for mobility management anchor base stations in distributed sensing networks may not adopt a unified approach for communication anchor base stations and sensing anchor base stations. Instead, it can employ an independent mobility management approach for communication anchor base stations and sensing anchor base stations. That is, the cooperating terminal establishes a connection with the communication anchor base station through a communication link to access the network. Simultaneously, the network determines the cooperating terminal's sensing anchor base station based on the sensing information of each base station. The communication anchor base station and the sensing anchor base station are not the same base station. In subsequent mobility management processes, the network maintains separate signaling interactions and information transmission processes for the handover of the communication anchor base station and the sensing anchor base station for this cooperating terminal.

[0180] The foregoing primarily describes the solutions of the embodiments of this disclosure from a methodological perspective. The following also illustrates a mobility management device for executing the mobility management methods in any of the above embodiments and their possible implementations. It is understood that, in order to implement the mobility management method, the mobility management device includes hardware structures and / or software modules corresponding to the execution of various functions; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the various examples described in the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0181] This disclosure embodiment can divide the mobility management device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each function into a separate functional module.

[0182] Figure 9 This disclosure provides a mobility management device applied to a first node. The mobility management device 400 includes a processing module 401 and a communication module 402.

[0183] The processing module 401 is used to construct the association between the terminal's communication identifier and the first perception identifier after establishing a connection with the terminal.

[0184] The processing module 401 is also used to configure corresponding synesthetic identifiers for the association relationships;

[0185] The processing module 401 is also used to perform mobility management of the terminal based on the sensor identifier.

[0186] In some embodiments, the processing module 401 is specifically used for:

[0187] Acquire the first movement trajectory associated with the communication identifier sent by the terminal;

[0188] The terminal is used to sense and obtain the second movement trajectory associated with the first sensing identifier;

[0189] If the first movement trajectory matches the second movement trajectory, the association between the terminal's communication identifier and the first perception identifier is established.

[0190] In some embodiments, the processing module 401 is specifically used for:

[0191] Send a third movement trajectory associated with a communication identifier to the terminal;

[0192] During the process of the terminal moving based on the third movement trajectory, the terminal is sensed to obtain the fourth movement trajectory associated with the first sensing identifier;

[0193] When the third and fourth movement trajectories match, the association between the terminal's communication identifier and the first perception identifier is established.

[0194] In some embodiments, the communication module 402 is configured to receive a set of movement trajectories associated with a communication identifier sent by the terminal, wherein the third movement trajectory belongs to the set of movement trajectories.

[0195] In some embodiments, the communication module 402 is used to send a terminal's perception report to the sensing center. The terminal's perception report includes the terminal's sensing identifier and first sensing information obtained by the first node sensing the terminal.

[0196] In some embodiments, the communication module 402 is used to receive a cooperation instruction sent by the sensing center. The cooperation instruction is used to instruct the first node and the cooperation node to cooperate in sensing the terminal. The cooperation node is determined by the sensing center based on the sensing report.

[0197] In some embodiments, the communication module 402 is used to receive configuration information and location information of the cooperating nodes sent by the sensing center.

[0198] In some embodiments, the communication module 402 is configured to receive second sensing information of the terminal sent by the cooperating node;

[0199] Processing module 401 is used to fuse the first sensing information and the second sensing information of the terminal to obtain fused sensing information;

[0200] Send fused sensing information to the sensing center and collaborating nodes.

[0201] In some embodiments, the communication module 402 is specifically used for:

[0202] Send a first request message to the synergy center. The first request message is used to request that the synergy anchor point of the terminal be switched from the first node to the second node. The second node is a cooperative node. The first request message includes a synergy identifier.

[0203] The system receives a first response message from the sensing center, which indicates that the second node agrees to act as the sensing anchor point for the terminal.

[0204] In some embodiments, the communication module 402 is configured to send a first request message to the sensing center when the anchor point switching conditions are met.

[0205] In some embodiments, the communication module 402 is used to send a switching instruction to the terminal, the switching instruction being used to instruct the terminal to switch the sensing anchor point from the first node to the second node.

[0206] In some embodiments, the communication module 402 is used to send resource configuration information of the second node to the terminal.

[0207] In some embodiments, the communication module 402 is configured to receive a switching completion instruction sent by the sensing center. The switching completion instruction is used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node and / or to indicate the cessation of collaborative sensing of the terminal.

[0208] For a more detailed description of the processing module 401 and the communication module 402, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0209] Figure 10 This is another mobility management device provided in this disclosure embodiment, applied in a communication center. The mobility management device 500 includes: a communication module 501 and a processing module 502.

[0210] The communication module 501 is used to receive the terminal's perception report sent by the first node. The terminal's perception report includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal. The terminal's sensing identifier is determined based on the association between the terminal's communication identifier and the first sensing identifier.

[0211] The processing module 502 is used to determine the collaborative nodes that perform collaborative sensing on the terminal based on the terminal's perception report.

[0212] In some embodiments, the communication module 501 is used to send relevant information of the first node and the perception report of the terminal to the cooperating node. The relevant information of the first node includes at least one of the following: the location information of the first node and the identification information of the first node.

[0213] In some embodiments, the communication module 501 is further configured to send a cooperation instruction to the first node and the cooperating node, the cooperation instruction being used to instruct the first node and the cooperating node to perform cooperative sensing of the terminal.

[0214] In some embodiments, the communication module 501 is further configured to send configuration information and location information of the cooperating node to the first node.

[0215] In some embodiments, the communication module 501 is further configured to receive fused sensing information sent by the first node, wherein the fused sensing information is obtained by fusing the first sensing information and the second sensing information obtained by the cooperating node from sensing the terminal.

[0216] In some embodiments, the communication module 501 is specifically used for:

[0217] Receive the first request message sent by the first node. The first request message is used to request that the terminal's sensing anchor point be switched from the first node to the second node. The second node is a cooperative node.

[0218] Send a first response message to the first node. The first response message is used to indicate that the second node agrees to act as the terminal's communication anchor.

[0219] In some embodiments, the communication module 501 is specifically used for:

[0220] Send a second request message to the second node. The second request message is used to request that the terminal's sensory anchor point be switched from the first node to the second node. The second node is a cooperative node.

[0221] The second response message sent by the second node is received. The second response message is used to indicate that the second node agrees to act as the communication anchor point of the terminal.

[0222] In some embodiments, the communication module 501 is further configured to send a handover completion instruction to the cooperating node, the handover completion instruction being used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node and / or to indicate the cessation of cooperative sensing of the terminal.

[0223] For a more detailed description of the communication module 501 and the processing module 502, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0224] Figure 11 This is another mobility management device provided in this disclosure, applied to a second node. The mobility management device 600 includes a communication module 601 and a processing module 602.

[0225] The communication module 601 is used to receive the terminal's perception report sent by the sensing center. The terminal's perception report includes the terminal's sensing identifier and the first sensing information obtained by the first node through sensing the terminal.

[0226] The processing module 602 is used to determine the second sensing information that matches the first sensing information from the sensing information perceived by the second node;

[0227] The processing module 602 is also used to associate the second sensing identifier corresponding to the second sensing information with the sensing identifier of the terminal.

[0228] The system receives relevant information about the first node sent by the sensing center. The relevant information about the first node includes at least one of the following: the location information of the first node and the identification information of the first node.

[0229] In some embodiments, the communication module 601 is further configured to receive a cooperation instruction sent by the sensing center, the cooperation instruction being used to instruct the first node and the cooperation node to cooperate in sensing the terminal.

[0230] In some embodiments, the communication module 601 is further configured to receive fused sensing information sent by the first node, wherein the fused sensing information is obtained by fusing the first sensing information and the second sensing information by the cooperating node.

[0231] In some embodiments, the communication module 601 is specifically used for:

[0232] Receive the second request message sent by the sensing center. The second request message is used to request that the terminal's sensing anchor point be switched from the first node to the second node.

[0233] A second response message is sent to the sensing center. The second response message is used to indicate that the second node agrees to act as the sensing anchor point of the terminal.

[0234] In some embodiments, the communication module 601 is further configured to send a switching confirmation message to the sensing center, the switching confirmation message being used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node.

[0235] In some embodiments, the communication module 601 is further configured to receive a switching completion instruction sent by the sensing center, the switching completion instruction being used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node and / or to indicate the cessation of collaborative sensing of the terminal.

[0236] For a more detailed description of the communication module 601 and the processing module 602, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0237] It should be noted that, Figure 9 , Figure 10 and Figure 11 Modules in a module can also be called units; for example, a communication module can be called a communication unit. Additionally, in... Figure 9 , Figure 10 and Figure 11 In the embodiments shown, the names of the modules may not be the same as those shown in the figures. For example, the communication module may also be called the sending module or the receiving module.

[0238] Figure 9 , Figure 10 and Figure 11If the various units or modules in the present disclosure are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0239] In implementing the functions of the integrated modules described above using hardware, embodiments of this disclosure also provide a possible structure for a communication device used to execute the mobility management method provided in embodiments of this disclosure. Figure 12 As shown, the communication device 700 includes a communication interface 703, a processor 702, and a bus 704. Optionally, the communication device may also include a memory 701.

[0240] Processor 702 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 702 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 702 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0241] The communication interface 703 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0242] The memory 701 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, 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 is not limited thereto.

[0243] In one possible implementation, the memory 701 can exist independently of the processor 702. The memory 701 can be connected to the processor 702 via a bus 704 and is used to store instructions or program code. When the processor 702 calls and executes the instructions or program code stored in the memory 701, it can implement the mobility management method provided in this embodiment of the disclosure.

[0244] In another possible implementation, the memory 701 can also be integrated with the processor 702.

[0245] The 704 bus can be an extended industry standard architecture (EISA) bus, etc. The 704 bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 12 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.

[0246] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the mobility management method as described in any of the above embodiments.

[0247] In one exemplary embodiment, the computer may be the aforementioned mobility management device, and this disclosure does not limit the specific form of the computer.

[0248] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0249] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the mobility management method described in any of the above embodiments.

[0250] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A mobility management method, characterized in that, Applied to the first node, the method includes: After establishing a connection with the terminal, the association between the terminal's communication identifier and the first sensing identifier is constructed; Configure corresponding synesthetic identifiers for the aforementioned relationships; Based on the sensor identifier, mobility management is performed on the terminal.

2. The method according to claim 1, characterized in that, The process of establishing the association between the terminal's communication identifier and the first sensing identifier includes: Obtain the first movement trajectory associated with the communication identifier sent by the terminal; The terminal is used to sense and obtain the second movement trajectory associated with the first sensing identifier; If the first movement trajectory matches the second movement trajectory, an association relationship is established between the terminal's communication identifier and the first perception identifier.

3. The method according to claim 1, characterized in that, The process of establishing the association between the terminal's communication identifier and the first sensing identifier includes: Send a third movement trajectory associated with the communication identifier to the terminal; During the process of the terminal moving based on the third movement trajectory, the terminal is sensed to obtain the fourth movement trajectory associated with the first sensing identifier; If the third movement trajectory matches the fourth movement trajectory, an association relationship is established between the terminal's communication identifier and the first perception identifier.

4. The method according to claim 3, characterized in that, The method further includes: The terminal receives a set of movement trajectories associated with the communication identifier, wherein the third movement trajectory belongs to the set of movement trajectories.

5. The method according to claim 1, characterized in that, The method further includes: The terminal sends a perception report to the sensing center. The terminal's perception report includes the sensing identifier and the first sensing information obtained by the first node through sensing the terminal.

6. The method according to claim 5, characterized in that, The method further includes: The system receives a cooperation instruction sent by the sensing center. The cooperation instruction is used to instruct the first node and the cooperation node to cooperate in sensing the terminal. The cooperation node is determined by the sensing center based on the sensing report.

7. The method according to claim 6, characterized in that, The method further includes: Receive the configuration information and location information of the cooperating node sent by the sensing center.

8. The method according to claim 6, characterized in that, The method further includes: Receive the second sensing information of the terminal sent by the cooperating node; The first sensing information and the second sensing information of the terminal are fused to obtain fused sensing information; The fused sensing information is sent to the sensing center and the collaborating node.

9. The method according to claim 8, characterized in that, The first sensing information or the second sensing information includes at least one of the following: the location information of the terminal's movement trajectory, the speed of the terminal's movement, and the quality of the terminal's sensing channel.

10. The method according to claim 1, characterized in that, The mobility management includes switching management of the sensing anchor point, and the switching management of the terminal based on the sensing identifier includes: A first request message is sent to the sensing center. The first request message is used to request that the sensing anchor point of the terminal be switched from the first node to the second node, where the second node is a cooperative node. The first request message includes the sensing identifier. The terminal receives a first response message sent by the sensing center, the first response message being used to indicate that the second node agrees to act as the sensing anchor point of the terminal.

11. The method according to claim 10, characterized in that, The first request message also includes relevant information about the second node, which includes at least one of the following: the location information of the second node and the identification information of the second node.

12. The method according to claim 10, characterized in that, The first response message includes the resource configuration information of the second node.

13. The method according to claim 10, characterized in that, Sending the first request message to the sensing center includes: If the anchor point switching conditions are met, the first request message is sent to the sensing center; wherein the anchor point switching conditions include at least one of the following: The communication channel quality between the first node and the terminal is less than a first threshold. The quality of the sensing channel between the first node and the terminal is less than the second threshold. The quality of the sensing channel between the collaborating node and the terminal is greater than a third threshold. The sensing channel quality between the cooperating node and the terminal is greater than the sum of the sensing channel quality between the first node and the terminal and the fourth threshold. The distance between the first node and the terminal is greater than the fifth threshold. The distance between the collaborating node and the terminal is less than the sixth threshold; The distance between the first node and the terminal is greater than the sum of the distance between the cooperating node and the terminal and the seventh threshold.

14. The method according to claim 10, characterized in that, The second node satisfies at least one of the following: The second node is a cooperative node whose sensing channel quality with the terminal is greater than a third threshold. The second node is a cooperative node whose sensing channel quality with the terminal is greater than the sum of the sensing channel quality between the first node and the terminal and the fourth threshold. The second node is a collaborative node whose distance to the terminal is less than a sixth threshold. The second node is a collaborative node whose distance to the terminal plus the seventh threshold is less than the distance between the first node and the terminal.

15. The method according to claim 10, characterized in that, The method further includes: A switching instruction is sent to the terminal, which instructs the terminal to switch the sensing anchor point from the first node to the second node.

16. The method according to claim 15, characterized in that, The method further includes: Send the resource configuration information of the second node to the terminal.

17. The method according to claim 16, characterized in that, The method further includes: The terminal receives a handover completion instruction sent by the sensing center. The handover completion instruction is used to indicate that the terminal has successfully switched the sensing anchor point from the first node to the second node and / or to indicate that the terminal should stop collaborative sensing.

18. A mobility management method, characterized in that, Applied to a synesthetic center, the method includes: The system receives a perception report from a terminal sent by a first node. The perception report includes the terminal's sensing identifier and first sensing information obtained by the first node through sensing the terminal. The terminal's sensing identifier is determined based on the association between the terminal's communication identifier and the first sensing identifier. Based on the terminal's perception report, the collaborative nodes that perform collaborative perception on the terminal are determined.

19. The method according to claim 18, characterized in that, The method further includes: The relevant information of the first node and the perception report of the terminal are sent to the collaborating node. The relevant information of the first node includes at least one of the following: the location information of the first node and the identification information of the first node.

20. The method according to claim 19, characterized in that, The method further includes: A collaboration instruction is sent to the first node and the collaborating node, the collaboration instruction being used to instruct the first node and the collaborating node to perform collaborative sensing of the terminal.

21. A mobility management method, characterized in that, Applied to the second node, the method includes: The terminal's perception report, sent by the sensing center, includes the terminal's sensing identifier and first sensing information obtained by the first node through sensing the terminal. Determine the second sensing information that matches the first sensing information from the sensing information perceived by the second node; Associate the second sensing identifier corresponding to the second sensing information with the sensing identifier of the terminal.

22. The method according to claim 21, characterized in that, The method further includes: The terminal receives a second request message sent by the sensing center, the second request message being used to request that the sensing anchor point of the terminal be switched from the first node to the second node; A second response message is sent to the sensing center, the second response message being used to indicate that the second node agrees to act as the sensing anchor point of the terminal.

23. A communication device, characterized in that, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 22.

24. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 22.

25. A computer program product, characterized in that, When the computer program product is executed, it implements the method as described in any one of claims 1 to 22.

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