Mobile sensing method, mobile sensing system, source node and target node

Abstract

A mobile sensing method, a mobile sensing system, a source node and a target node, applicable to the field of wireless communications, and for use in implementing mobile sensing management of terminal devices. The method of the present application comprises: acquiring sensing information of a terminal device, the sensing information comprising location information; and sending a transfer request to a target node, wherein the transfer request comprises the sensing information, and the transfer request is used for requesting the target node to maintain the terminal device. According to embodiments of the present application, by transmitting a transfer message, a target node can maintain sensing management of a terminal device, thereby effectively reducing resource waste and extra signaling overhead caused by invalid beams.

Description

A motion sensing method, a motion sensing system, a source node, and a target node. Technical Field

[0001] This application relates to the field of wireless communication, and more particularly to a mobile sensing method, a mobile sensing system, a source node, and a target node. Background Technology

[0002] With the widespread adoption of internet applications and wireless network devices, the demand for wireless communication is further increasing. Future communication systems will be integrated communication and sensing systems, meaning that in addition to enhanced communication capabilities, they will also possess sensing and measurement capabilities. Integrated communication and sensing systems can utilize the transmission, reflection, or scattering of radio waves to perceive and characterize the environment, thereby enabling simultaneous localization and mapping (SLAM) and other functions.

[0003] In 5G networks, terminal devices' Radio Resource Control (RRC) connections have three states: idle, inactive, and connected. In the inactive state, mobility management is handled by the terminal device. Paging of inactive terminal devices by the network relies on the Access Network Notification Area (RNA). When the network has a message to deliver to the terminal device, it initiates paging. The network needs to perform multi-beam paging in each of the multiple cells within the RNA. In the idle state, mobility management is also handled by the terminal device. Paging of idle terminal devices by the network relies on the Tracking Area (TA). Paging by the network needs to perform multi-beam paging in each of the multiple cells corresponding to the TA. Each TA contains multiple RNAs, and each RNA contains multiple cells.

[0004] During the paging process, in an RNA or TA, the paging beams of cells other than the cell where the terminal device is located are invalid beams, resulting in wasted resources and additional signaling overhead.

[0005] Summary of the Invention

[0006] This application provides a mobile sensing method, a mobile sensing system, a source node, and a target node, applied in the field of wireless communication, for realizing mobile sensing management of terminal devices.

[0007] A first aspect of this application provides a mobile sensing method. In this method, a first node is the current maintenance node of a terminal device, used to acquire, store, or update sensing information of the terminal device. When the channel quality between the first node and the terminal device weakens or falls below a certain threshold, the first node needs to find another node to act as the maintenance node for the terminal device. After the first node determines a second node that meets the transfer conditions, the first node sends a transfer request to the second node, requesting the second node to act as the maintenance node for the terminal device and perform sensing maintenance. At this time, the first node is referred to as the source node, and the second node is referred to as the target node. The transfer request sent by the source node to the target node includes sensing information for sensing and measuring the terminal device, which includes at least the location information of the terminal device. Through this location information, the source node or the target node can locate the terminal device.

[0008] In this embodiment, the source node sends a transfer request to the target node, enabling the target node to locate the terminal device based on the sensing information in the transfer request, thereby achieving sensing management of the terminal device. When the target node receives a paging message, it can locate the terminal device and paging it, reducing the generation of invalid beams and thus avoiding resource waste and additional signaling overhead.

[0009] In some optional implementations, the location information of the terminal device includes at least one of the following: the terminal device's coordinate position, distance, speed, angle, and direction of movement. This location information can be the terminal device's location relative to the source node or its location relative to the target node.

[0010] In this embodiment, the source node or target node can locate the terminal device using location information. Simultaneously, based on the location information, the source node or target node possesses the function of sensing and locating passive terminal devices.

[0011] In some optional implementations, the sensing information may also include at least one of the following: signal strength from the source node to the terminal device or from the target node to the terminal device, time delay, Doppler shift, path components of the multipath, beam information, measurement time, time interval, number of measurements, and the terminal device's identifier, type, shape, material, size, and image.

[0012] In this embodiment, the information contained in the sensing information enables the source node or target node to sense and locate the terminal device, avoiding the problems of additional power consumption, signaling overhead, and latency caused by sensing and locating inactive or connected terminal devices when there is no data transmission or no along-path opportunity. Simultaneously, since inactive or idle terminal devices are configured with discontinuous reception (DRX) cycles, the information contained in the sensing information enables the source node or target node to reduce the time delay and power consumption caused by beam alignment when the terminal device wakes up.

[0013] In some optional implementations, the source node is connected to the relay node, which is responsible for sensing the terminal device. The source node receives the sensing results from the relay node and calculates sensing information based on the sensing results. This sensing information also includes at least one of the following: the relay node's identifier, the beam information from the relay node to the terminal device, the relay node's location information, the channel quality from the source node to the relay node, and the channel quality from the target node to the relay node.

[0014] In this embodiment of the application, using relay nodes for sensing and measurement can expand the sensing and measurement range of the base station and also share the sensing and measurement load of the base station. When the relay node performs sensing and measurement in a local area, it can also reduce interference within the cell and reduce the energy consumption of the base station compared to using the base station directly for sensing and measurement.

[0015] In some alternative implementations, the terminal device may be a low-power terminal device or a non-connected terminal device. Non-connected terminal devices include passive terminal devices, idle terminal devices, and inactive terminal devices.

[0016] In this embodiment, since the perception measurements of the terminal device by the source node or target node are transparent to the terminal device (i.e., the terminal device does not perceive the measurement signals sent to it by the source node or target node), the source node or target node can obtain the perception information of the terminal device even if the terminal device does not participate in signaling transmission, which is beneficial for energy saving of the terminal device. Simultaneously, for terminal devices in certain RRC states such as inactive or idle states, it is possible to achieve mobility controlled by the UE and mobility controlled by the network. Furthermore, since the terminal device does not need to participate in signaling interaction, the perception information of low-power terminal devices and non-connected terminal devices can also be obtained with lower latency.

[0017] In some optional implementations, if the terminal device is a low-power terminal device or an idle-state terminal device, the identifier of the terminal device can be a sensing-radio network temporary identifier (SE-RNTI) or a shortened-temporary mobile subscription identifier (S-TMSI). A portion of the SE-RNTI is configured by the core network or maintenance node, corresponding to the terminal device or its sensing information, while another portion corresponds to the current maintenance node of the terminal device, including the source node or the target node.

[0018] In this embodiment, since the identifier of the idle terminal device is configured by the core network or maintenance node, the identifier of the terminal device can be unified among the core network, the maintenance node of the terminal device, and the last service node. When a paging message is received, the maintenance node can more quickly determine the terminal device that needs to be paged, reducing time delay.

[0019] In some alternative implementations, if the terminal device is a passive terminal device, then the identifier of the terminal device includes a portion corresponding to the passive terminal device, and another portion corresponds to the current maintenance node of the terminal device and / or the beam used by the terminal device.

[0020] In some alternative implementations, the identifier for passive terminal devices can be a shared identifier. For example, multiple passive terminal devices within the same cell or using the same beam can share a single shared identifier. Terminal devices with the same shared identifier can be distinguished by corresponding sensing information.

[0021] In this embodiment of the application, since passive terminal devices do not receive paging messages, multiple passive terminal devices in the same cell or using the same beam can share a shared identifier to reduce the need for a large-capacity identifier.

[0022] In some alternative implementations, the identifier of the terminal device comes from the last serving node (last serving gNodeB) of the terminal device.

[0023] In some alternative implementations, after the source node sends a transfer request to the target node, the target node confirms whether it will act as the maintenance node for the terminal device. Once the target node confirms, the source node receives a transfer confirmation message from the target node.

[0024] In this embodiment of the application, using relay nodes for sensing and measurement can expand the sensing and measurement range of the base station and also share the sensing and measurement load of the base station. When the relay node performs sensing and measurement in a local area, it can also reduce interference within the cell and reduce the energy consumption of the base station compared to using the base station directly for sensing and measurement.

[0025] In some alternative implementations, the source node receives a paging message from the core network or the last serving node of the terminal device, the paging message including the identifier of the terminal device. The source node forwards the paging message to the target node.

[0026] In some optional implementations, before the source node sends a transfer request to the target node, the source node needs to determine the target node that meets the transfer conditions from multiple surrounding nodes. The source node sends a perception request message to multiple surrounding nodes, requesting them to perform perception measurements on the terminal device. The source node receives a first feedback message from the multiple surrounding nodes. The first feedback message may contain the perception measurement result of a neighboring node on the terminal device, which the source node uses to determine whether the node meets the transfer conditions based on the perception measurement result and the transfer conditions. Alternatively, the first feedback message may contain a judgment result, which is obtained by a neighboring node based on its perception measurement result on the terminal device and the transfer conditions. This judgment result indicates whether the node's perception measurement result meets the transfer conditions, and the judgment result is then sent to the source node.

[0027] In some optional implementations, the source node is connected to a relay node. When the channel quality from the source node to the relay node weakens or falls below a certain threshold, the source node triggers a relay handover; conversely, when the relay node detects that the channel quality to the third node is better than the channel quality to the source node, the relay node triggers a relay handover. The source node receives channel quality information from the relay node, which is obtained by the relay node measuring the synchronization signal block (SSB) or channel state information reference signal (CSI-RS) from the source node and the third node. The source node receives a second feedback message, which includes the sensing measurement results from the third node and the sensing measurement results from the relay node. The source node determines whether the third node meets the handover conditions based on the second feedback message and the channel quality information.

[0028] In some optional implementations, if the source node is connected to the relay node, the source node will send a transfer request to the target node, as well as a relay handover request, to migrate the relay node to the target node. The target node then uses the relay node to maintain the terminal device.

[0029] In some alternative implementations, the source node sends the identifier of the target node and the identifier of the terminal device to the last serving node of the core network or terminal device.

[0030] In this embodiment, the last serving node of the terminal device serves as the anchor point for establishing a connection with the core network. The source node sends the current maintenance node identifier and the terminal device identifier to the last serving node or the core network. This allows the core network or the last serving node to directly locate the current maintenance node when a paging message arrives. Through the current maintenance node, the core network can use the beam information corresponding to the terminal device based on the sensing information to paging the terminal device. This helps reduce beam scanning overhead and the power consumption and latency of terminal device detection. Furthermore, since the beam information corresponding to the terminal device is used during paging, it helps reduce the latency of the terminal device searching for and aligning the transmit and receive beams when waking up during the DRX cycle.

[0031] In some alternative implementations, the source node acquires sensing information by receiving sensing information from other nodes or by calculating sensing information through sensing measurements.

[0032] In some alternative implementations, the terminal device can acquire sensing measurement results, which can be obtained by the source node through sensing measurements or received from other nodes. The terminal device can calculate sensing information based on multiple sensing measurement results.

[0033] In this embodiment, the sensing information calculated based on multiple sensing measurement results can more accurately indicate the information of the terminal device.

[0034] In some optional implementations, the source node can determine whether to perform a handover based on the signal strength from the source node to the terminal device, or it can determine whether to perform a handover based on the signal strength from the target node to the terminal device. For example, when the signal strength from the source node to the destination device is lower than a preset value, the source node starts searching for a target node that meets the handover conditions; or, if the signal strength from a certain node to the terminal device is higher than the signal strength from the source node to the terminal device, the source node receives the signal strength information from that node to the terminal device and determines whether to send a handover request to that node.

[0035] In some alternative implementations, the source node may send a first capability message to the target node to indicate that the source node has a sensing management function (SEMF). The source node may also receive a second capability message from the target node to indicate that the target node has SEMF.

[0036] In this embodiment, SEMF is deployed at the source node or the target node. Compared with SEMF deployment in the core network, this reduces the latency for the source node or the target node to obtain sensing measurement results, which is beneficial for network topology optimization on the node side and improves system performance.

[0037] A second aspect of this application provides a mobile sensing method in which a target node receives a transfer request from a source node. The transfer request includes sensing information, including location information. The target node acts as a maintenance node for a terminal device, performing sensing measurements on the terminal device and being responsible for storing and / or updating the sensing information.

[0038] In this embodiment, a transfer request transforms the maintenance node from the source node to the target node, thus enabling the target node to maintain awareness and management of the terminal device. When the target node receives a paging message, it can page the terminal device based on the awareness information, reducing resource waste and additional signaling overhead caused by invalid beams.

[0039] In some optional implementations, the location information of the terminal device includes at least one of the following: the terminal device's coordinate position, distance, speed, angle, and direction of movement. This location information can be the terminal device's location relative to the source node or its location relative to the target node.

[0040] In some optional implementations, the sensing information may also include at least one of the following: signal strength from the source node to the terminal device or from the target node to the terminal device; time delay; Doppler shift; path components of the multipath; beam information; measurement time; time interval; number of measurements; and the terminal device's identifier, type, shape, material, size, and image.

[0041] In some alternative implementations, the terminal device may be a low-power terminal device or a non-connected terminal device. Non-connected terminal devices include passive terminal devices, idle terminal devices, and inactive terminal devices.

[0042] In some optional implementations, if the terminal device is a low-power terminal device or an idle-state terminal device, the identifier of the terminal device can be SE-RNTI or S-TMSI. A portion of SE-RNTI is configured by the core network or maintenance node and corresponds to the terminal device or the terminal device's sensing information, while another portion corresponds to the current maintenance node of the terminal device, including the source node or the target node.

[0043] In some alternative implementations, if the terminal device is a passive terminal device, then the identifier of the terminal device includes a portion corresponding to the passive terminal device, and another portion corresponds to the current maintenance node of the terminal device and / or the beam used by the terminal device.

[0044] In some alternative implementations, the identifier for passive terminal devices can be a shared identifier. For example, multiple passive terminal devices within the same cell or using the same beam can share a single shared identifier. Terminal devices with the same shared identifier can be distinguished by corresponding sensing information.

[0045] In some alternative implementations, after receiving a transfer request, the target node starts a timer, and after the timer expires, it sends a transfer confirmation message to the source node.

[0046] In some optional implementations, the target node receives a perception request message from the source node and performs perception measurements on the terminal device based on the perception request message. The target node sends a first feedback message to the source node, which may include the perception measurement results. The source node then determines whether the target node meets the transfer conditions based on the perception measurement results. The first feedback message may also include a judgment result, which is obtained by the target node based on the perception measurement results and the transfer conditions, and is used to indicate that the target node meets the transfer conditions.

[0047] In some alternative implementations, if the source node is connected to the relay node, the target node will receive a relay switching request from the source node in addition to the transfer request. This relay switching request is used to instruct the relay node to migrate to the target node, and the target node maintains the terminal device through the relay node.

[0048] In some alternative implementations, the target node sends a second indication message to the last serving node of the core network or terminal device, the second indication message including the identifier of the target node and the identifier of the terminal device.

[0049] In this embodiment of the application, when the core network needs to page the terminal device, the last serving node of the core network or the terminal device can directly send a paging message to the target node, reducing invalid beams and avoiding resource waste and additional signaling overhead.

[0050] In some alternative implementations, the target node receives a paging message from the source node, the core network, or the last serving node of the terminal device. The target node then forwards the paging message to the terminal device.

[0051] In some alternative implementations, the target node sends the sensing measurement results to the source node, which are obtained by the target node from sensing measurements of the terminal device.

[0052] In some alternative implementations, when the target node finds that the signal strength to the terminal device is consistently better than the signal strength to the terminal device from the source node, the target node sends the signal strength information from the target node to the terminal device to the source node, and then the source node determines whether to send a transfer request to the target node.

[0053] In some alternative implementations, the target node may receive a first capability message from the source node indicating that the source node has SEMF (Sense Management Function). The target node may also send a second capability message to the source node indicating that the target node has SEMF.

[0054] A third aspect of the embodiments of this application provides a source node, including:

[0055] The acquisition unit is used to acquire the sensing information of the terminal device, including location information.

[0056] The sending unit is used to send a transfer request to the target node. The transfer request includes sensing information and is used to request the target node to maintain the terminal equipment.

[0057] A fourth aspect of this application provides a target node, including:

[0058] The receiving unit is used to receive a transfer request from the source node. The transfer request includes sensing information, which includes location information.

[0059] The sensing and measurement unit is used to perform sensing and measurement on the terminal device.

[0060] A fifth aspect of this application provides a source node, characterized in that it includes:

[0061] A processor and a memory, wherein the processor is coupled to the memory;

[0062] The memory is used to store programs;

[0063] The processor is configured to execute a program in the memory, causing the source node to perform the method as described in any one of claims 1 to 14.

[0064] A sixth aspect of this application provides a target node, characterized in that it includes:

[0065] A processor and a memory, wherein the processor is coupled to the memory;

[0066] The memory is used to store programs;

[0067] The processor is configured to execute a program in the memory, causing the target node to perform the method as described in any one of claims 15 to 27.

[0068] A seventh aspect of this application provides a mobile sensing system, characterized in that it includes:

[0069] The source node as described in the first aspect above, and the target node as described in the second aspect above;

[0070] or,

[0071] Relay nodes, such as the source node as described in the first aspect above, and the target node as described in the second aspect above;

[0072] or,

[0073] Core network nodes, including source nodes as described in the first aspect above, and target nodes as described in the second aspect above.

[0074] An eighth aspect of this application provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described in the first aspect above, or cause the computer to perform the method described in the second aspect above. Attached Figure Description

[0075] Figure 1 is a network architecture diagram in an embodiment of this application;

[0076] Figure 2 is a system architecture diagram of the mobile sensing method in an embodiment of this application;

[0077] Figure 3 is a schematic diagram of an embodiment of the motion sensing method in this application;

[0078] Figure 4 is another system architecture diagram of the mobile sensing method in the embodiments of this application;

[0079] Figure 5 is a schematic diagram of another embodiment of the motion sensing method in this application;

[0080] Figure 6 is another system architecture diagram of the mobile sensing method in the embodiments of this application;

[0081] Figure 7 is a schematic diagram of another embodiment of the motion sensing method in this application;

[0082] Figure 8 is another system architecture diagram of the mobile sensing method in the embodiments of this application;

[0083] Figure 9 is a schematic diagram of another embodiment of the motion sensing method in this application;

[0084] Figure 10 is a schematic diagram of an embodiment of the source node in this application;

[0085] Figure 11 is a schematic diagram of an embodiment of the target node in this application;

[0086] Figure 12 is a schematic diagram of another embodiment of the source node in this application;

[0087] Figure 13 is a schematic diagram of another embodiment of the target node in this application. Detailed Implementation

[0088] This application provides a mobile sensing method, a mobile sensing system, a source node, and a target node, applied in the field of wireless communication, for realizing mobile sensing management of terminal devices.

[0089] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0090] The terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the description of embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to those processes, methods, products, or apparatuses.

[0091] Please refer to Figure 1. The network architecture on which the mobility sensing method in this embodiment is based is briefly described below:

[0092] This network architecture includes a core network, radio access network (RAN) nodes, and terminal equipment. Sensing signaling transmission can occur between the core network and RAN nodes, between the core network and terminal equipment, or between RAN nodes and terminal equipment. RAN nodes are responsible for sending and receiving sensing measurement signals. When a RAN node is configured with SEMF (Search Engine Default Mode), it has the function of synthesizing or calculating the received sensing measurement results to obtain sensing information.

[0093] RAN nodes can be network nodes, with RAN nodes transmitting sensing signaling through the Xn interface; or they can be other nodes, such as user equipment (UE) nodes, with RAN nodes transmitting through sidelinks. Network nodes can be evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home evolved Node B (or home Node B (HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (WIFI) system. They can also be gNB or transmission point (TRP or TP) in a 5G system, one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or network nodes that constitute a gNB or transmission point, such as building baseband unit (BBU) or distributed unit (DU).

[0094] Terminal equipment can refer to UE, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, and can also be cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, terminal equipment in future 5G networks or terminal equipment in future evolved public land mobile network (PLMN), etc., and this application does not limit it.

[0095] In this embodiment, the terminal device can be a connected terminal device, a disconnected terminal device, or a low-power terminal device; the specific type is not limited here. A low-power device corresponds to a power-sensitive device or a terminal device in a low-power consumption state; it can be an RRC connected terminal device, an RRC idle terminal device, or an RRC inactive terminal device; the specific type is not limited here. A disconnected terminal device includes a passive terminal device, an idle terminal device, or an inactive terminal device; the specific type is not limited here. A passive terminal device does not have communication capabilities and only reflects sensing signals based on its physical characteristics.

[0096] Based on the above architecture, in this embodiment, the RAN node is responsible for periodically sending sensing measurement signals to the terminal device and calculating the sensing information of the terminal device based on the reflected signals of the sensing measurement signals. The RAN node is responsible for storing and updating the sensing information of the terminal device. This RAN node is referred to as the current maintenance node of the terminal device. Maintaining the terminal device can refer to storing the sensing information of the terminal device, or to identifying the characteristics of the terminal device, such as shape, size, or image, or to storing the status information of the terminal device, such as the signal strength, delay, Doppler frequency shift, multipath components, measurement time, time interval, number of measurements, or beam information obtained by the maintenance node from the measurement signals. It can also refer to maintaining the sensing information, status information, or associated information of the terminal device, and the specific details are not limited here.

[0097] Mobile sensing encompasses sensing measurement and maintenance transfer. When a terminal device moves, or remains stationary but experiences environmental changes, and a maintenance node detects a weakening signal quality to the terminal device or the presence of a stronger signal from another node, it identifies the other node as the target node. The current maintenance node, acting as the source node, sends a transfer request, making the target node the maintenance node for that terminal device, responsible for maintaining its sensing information. The information acquired by the maintenance node is called sensing information, also known as sensing context information, sensing state information, or sensing association information.

[0098] RAN nodes can detect mobility of terminal devices in various scenarios, which are described below:

[0099] 1. RAN nodes directly maintain terminal equipment:

[0100] Please refer to Figure 2. In this scenario, both Node 1 and Node 2 are RAN nodes. Node 1 acts as the maintenance node for the terminal device, performing maintenance on the terminal device. Node 2 is Node 1's neighboring node. When Node 1 detects insufficient signal quality to the terminal device (e.g., below a first threshold), or when the signal quality from Node 2 to the terminal device exceeds a second threshold, a maintenance node transfer from Node 1 to Node 2 can occur. After the transfer, Node 1 or Node 2 can send the identifier of the current maintenance node and the identifier of the terminal device to Node 3, or update the locally stored identifiers of the current maintenance node and the terminal device. Node 3 can be a core network node or the last serving node of the terminal device.

[0101] Please refer to Figure 3. In this scenario, a motion sensing method in this embodiment of the application includes:

[0102] 301. Node 1 sends a perception capability message to Node 2;

[0103] Node 1 sends a sensing capability message to Node 2, indicating that Node 1 has SEMF. SEMF is responsible for coordinating, scheduling, and configuring sensing measurement and reporting resources, as well as calculating or verifying the final sensing results, such as the final location information that meets the requirements, velocity estimation, and the accuracy of the estimation. Interaction is required between RAN nodes to confirm whether each RAN node supports SEMF.

[0104] In practical applications, the perception capability message can include the node's duplex capability, indicating whether the node has full-duplex or half-duplex capability.

[0105] 302. Node 2 sends a perception capability message to Node 1;

[0106] Node 2 sends a perception capability message to Node 1, which indicates that Node 2 has SEMF.

[0107] In this embodiment of the application, since duplex capability affects the reception time of sensing measurement signals and SEMF affects the synthesis or calculation of sensing measurement results, the sending and receiving of sensing capability messages helps the maintenance node obtain more accurate sensing information.

[0108] 303. Node 1 acquires the sensing information of the terminal device;

[0109] Node 1 acquires the perception measurement results of the terminal device through sensing measurements and / or by combining historical connection state information. Sensing measurements include active sensing measurements and / or cooperative sensing measurements. Active sensing detection is self-sensing; Node 1 sends a sensing measurement signal to the terminal device and receives the reflected signal of the sensing measurement signal. Based on the sensing measurement signal and the reflected signal, a first sensing measurement result is obtained. The first sensing measurement result may include the position information of the terminal device relative to Node 1, such as the coordinate position, distance, speed, angle, or direction of movement of the terminal device. It may also include the signal strength, time delay, Doppler frequency shift, path components of the multipath, or beam information of the reflected signal received by the source node. Cooperative sensing measurements require the participation of at least two nodes, such as Node 1 and Node 2. Node 1 sends a sensing measurement request to Node 2 to instruct Node 2 to send a sensing measurement signal. Node 1 then receives the reflected signal of this sensing measurement signal to obtain a second sensing measurement result. Alternatively, Node 1 can send a sensing measurement signal to the terminal device and configuration information for the sensing measurement signal to Node 2. Node 2 then receives the reflected signal of the sensing measurement signal and obtains a third sensing measurement result based on the reflected signal. Node 2 then sends the third sensing measurement result to Node 1. The third sensing measurement result may include the position information of the terminal device relative to Node 2, such as the coordinate position, distance, speed, angle, or direction of movement of the terminal device. It may also include the signal strength, time delay, Doppler frequency shift, path components of the multipath, measurement time, time interval, number of measurements, or beam information obtained from the reflected signal received by the target node. Alternatively, Node 1 can send a sensing measurement request to Node 2 to instruct Node 2 to send a sensing measurement signal. Node 2 receives the reflected signal of this sensing measurement signal to obtain a fourth sensing measurement result, which Node 2 then sends to Node 1. If Node 2 has SEMF (Self-Employed Sensing and Motion Filtering), Node 2 can directly obtain sensing information based on the third or fourth sensing measurement result and send it to Node 1. Specific details are not limited here.

[0110] Nodes equipped with SEMF can also obtain the identifier, type, shape, material, size, or image of the terminal device based on the sensing measurement results.

[0111] In practical applications, if node 1 has SEMF, node 1 can obtain sensing information based on any one of the first, second, third, or fourth sensing measurement results. It can also process multiple sensing measurement results, such as by averaging, to obtain sensing information. The specifics are not limited here.

[0112] Node 1 can send a request to the last serving node of the terminal device and receive historical RRC connection state information about the terminal device from the last serving node. The last serving node of the terminal device is the network node to which the terminal device was attached before it transitioned from the connected state to the idle or inactive state. It stores the context information of the terminal device when it was in the connected state. Therefore, Node 1 can obtain the context information of the terminal device from the last serving node. In practical applications, the core network can, as needed, instruct the last serving node to retain some or all of the context information of the idle terminal device. This context information corresponds to the context information of the terminal device in the connected or inactive state.

[0113] In practical applications, node 1 can directly use all or part of the information in the context as perception information, or it can synthesize the context information with the perception measurement results to form perception information, or it can generate new perception information based on the perception measurement.

[0114] The sensing information includes the location information of the terminal device, which includes at least one of the following: the terminal device's coordinate position, distance, speed, angle, and direction of movement. In practical applications, the sensing information may also include at least one of the following: signal strength from the node to the terminal device, time delay, Doppler frequency shift, each path component of the multipath propagation, measurement time, beam information, time interval, and number of measurements. This information can be a specific numerical value or a range. The reference node for the above values ​​can be node 1 or node 2. That is, the sensing information can include first sensing information of the terminal device relative to node 1, second sensing information of the terminal device relative to node 2, or both.

[0115] The sensing information may also include the terminal device's identifier, type, shape, material, size, or image. If the terminal device is a low-power terminal device or an idle-mode terminal device, a dedicated SE-RNTI can be configured for the terminal device by the core network or the terminal device's maintenance node and assigned to the terminal device's last serving node. Part of this SE-RNTI is configured by the core network and corresponds to the terminal device; it can be the terminal device's identifier, such as S-TMSI or Temporary Mobile Subscription Identifier (TMSI), or it can be the terminal device's sensing information configured by the maintenance node. This sensing information and the corresponding identifier are sent by the maintenance node to the last serving node, allowing requesters to locate the terminal device through the last serving node. The other part corresponds to the current maintenance node's identifier and can be represented by a string of binary numbers, such as a 20-bit value. When the core network sends a paging message to the terminal device, it travels through the last serving node to the maintenance node, which can then determine the terminal device to be paged based on the SE-RNTI. In practical applications, S-TMSI or TMSI can also be used directly to identify the terminal device; specific usage is not limited here. Node 1 can obtain the terminal device identifier directly from the last service node, or it can obtain the terminal device identifier from other nodes, such as the previous maintenance node. The specific method is not limited here.

[0116] In this embodiment of the application, after introducing SE-RNTI for the idle state terminal device, both the RAN node and the core network have the identifier of the idle state terminal device, which unifies the RAN node and the core network's understanding of the identifier of the terminal device and helps to send subsequent paging messages.

[0117] If the terminal device is inactive, it can be represented by the inactive radio network temporary identifier (I-RNTI) or S-TMSI.

[0118] If the terminal device is a passive terminal device, its identifier consists of one part corresponding to the identifier of the current maintenance node or the identifier of the beam used, and the other part corresponding to the passive terminal device itself. This can be represented using a shared identifier. This shared identifier can represent multiple passive terminal devices located within the same cell or multiple passive terminal devices using the same beam. Multiple terminal devices under the same shared identifier are distinguished by different sensing information.

[0119] In this embodiment, since the passive terminal device does not need to receive paging messages, the maintenance node can configure a shared identifier for the passive terminal device and save the shared identifier locally to reduce the need for a large number of identifiers.

[0120] In this embodiment, a 2-bit value can be used to represent three types of terminal devices: passive terminal devices, idle terminal devices, or inactive terminal devices. Alternatively, a 1-bit value can be used to distinguish between active and passive terminal devices.

[0121] In this embodiment, the sensing information enables the RAN node to detect and locate passive terminal devices and idle terminal devices, while avoiding the additional power consumption, signaling overhead, and latency issues caused by detecting and locating inactive or connected terminal devices when there is no data transmission or no accompanying opportunities. Since inactive or idle terminal devices are configured with discontinuous reception (DRX) cycles, the beam information in the sensing information allows the RAN node to reduce the time delay and power consumption caused by beam alignment when the terminal device wakes up. Furthermore, since the RAN node's sensing measurements of the terminal device can be transparent to the terminal device—that is, the terminal device does not perceive the sensing measurement signals sent by the RAN node—energy consumption of the terminal device is saved.

[0122] Node 1 makes a judgment based on the acquired sensing information. If Node 1 detects that the signal strength to the terminal device is lower than a certain preset value, it executes step 304. If Node 1 receives the signal strength from Node 2 to the terminal device, it executes step 307.

[0123] 304. Node 1 sends a perception request message to Node 2;

[0124] Node 1 needs to determine the target node that meets the transfer conditions from its neighboring nodes. Node 1 sends a perception request message to Node 2, which includes information for Node 2 to determine the target to be perceived and perception measurement feedback requirements. The information for Node 2 to determine the target to be perceived can be the position information of the terminal device relative to Node 1 or Node 2, or the shape, material, size, or image of the terminal device, or the identifier of the terminal device; the specifics are not limited here. The perception measurement feedback requirements are used to indicate the measurement quantities that Node 2 needs to perform perception measurements. The measurement quantities include at least one of the following: distance, speed, angle, signal strength, time delay, multipath components, beam information, measurement time, time interval, and number of measurements. It also includes the geographical location or movement trajectory at different time points. The measurement quantities that need to be perceived correspond to the perception information obtained by Node 1.

[0125] In practical applications, if node 2 has SEMF (Self-Effective Motion), the sensing request message can include transition conditions, namely, the accuracy requirements and / or delay requirements corresponding to the measured quantity. Node 2 then determines whether the transition conditions are met.

[0126] In this embodiment of the application, the perception request message can also be carried in the handover preparation message.

[0127] 305. Node 2 performs sensing and measurement on the terminal device;

[0128] Node 2 determines the terminal device requiring sensing measurement based on the sensing request message sent by Node 1. Node 2 can send a sensing measurement signal to the terminal device and receive the reflected signal, obtaining the sensing measurement result from the reflected signal. Alternatively, Node 2 can perform a transmit-receive sensing measurement on the sensing measurement signal from Node 1, where Node 1 sends the sensing measurement signal, Node 2 receives the reflected signal, and obtains the sensing measurement result from the reflected signal; the specific method is not limited here.

[0129] 306. Node 2 sends a feedback message to Node 1;

[0130] Node 2 can directly send the sensing measurement results as a feedback message to Node 1. If Node 2 has SEMF (Self-Effective Mechanism), Node 2 can also first obtain the measurement information based on the sensing measurement results, and then send the measurement information as a feedback message to Node 1. If the sensing request message received by Node 2 also includes a transition condition, Node 2 can also determine whether the measurement information meets the accuracy requirements and / or delay requirements based on the transition condition, such as if the measurement information error is less than a threshold value. If satisfied, Node 2 sends the judgment result to Node 1 to indicate that Node 2 meets the transition condition.

[0131] 307. Node 1 determines whether Node 2 meets the transition conditions;

[0132] If node 1 receives a feedback message from node 2, node 1 determines whether node 2 meets the transfer conditions based on the feedback message. If the feedback message includes sensing measurement results, node 1 calculates the measurement information based on the sensing measurement results. If the feedback message includes measurement information, node 1 directly uses the measurement information for judgment. Node 1 determines whether the signal strength from node 2 to the terminal device is higher than a threshold value, and whether the deviation and / or comparison deviation between the measurement information and the reference value is less than a certain threshold value. Specifically, node 1 can also determine whether the duration for which the signal strength from node 2 to the terminal device is higher than the threshold value is greater than a preset duration, or whether the number of times the signal strength from node 2 to the terminal device is higher than the threshold value is greater than a preset value.

[0133] Node 1 can also determine whether the deviation between the measured information and the reference value is less than a certain value within a certain time period. The reference value is determined by Node 1 based on the perceived information and includes the reference coordinate position, reference distance, reference angle, or reference speed of the terminal device. When the deviation is less than a certain value, Node 1 can determine that the terminal device has a high degree of matching with the reference target. In practical applications, the measurement results of Node 2 may contain other objects, and the measurement results of other objects may differ significantly from those of Node 1. In such cases, the measurement results of those other objects can be excluded, or other measures can be taken, such as re-measuring. Specific details are not limited here.

[0134] When the signal strength from node 2 to the terminal device is higher than the preset value and the deviation is less than the threshold value, node 1 determines that node 2 meets the transfer conditions.

[0135] If the feedback message includes a judgment result, then node 1 determines that node 2 meets the transition conditions.

[0136] If node 1 receives the signal strength from node 2 to the terminal device, and the aforementioned steps 304 to 306 are not executed, then node 1 determines whether node 2 meets the transfer conditions based on the signal strength from node 2 to the terminal device.

[0137] In practical applications, node 1 will determine that multiple nodes meet the transition conditions, and node 1 will select one of the nodes that meet the transition conditions as the target node.

[0138] 308. Node 1 sends a transfer request to Node 2;

[0139] After determining the target node, Node 1, as the source node, sends a transfer request to Node 2, which is the target node, to request Node 2 to act as the maintenance node for the terminal device. The transfer request includes the identifier of Node 1, the identifier of Node 2, and perception information.

[0140] In this embodiment, node 1 sends a transfer request to node 2, enabling node 2 to locate or acquire features of the terminal device based on the sensing information in the transfer request, thereby achieving sensing management of the terminal device. When node 2 receives a paging message, the target node can locate the terminal device and paging it. Therefore, the last serving node of the terminal device does not need to send paging beams to multiple cells in the RNA or TA where the terminal device is located; it only needs to send a paging beam to the cell where the terminal device is located. This reduces invalid beams caused by the inability to paging the terminal device, thereby avoiding resource waste and additional signaling overhead.

[0141] 309. Node 2 performs maintenance on the terminal equipment;

[0142] Upon receiving the transfer request, Node 2 determines whether to accept the role of maintenance node for the terminal device. If accepted, Node 2 is responsible for maintaining the terminal device. Node 2 stores the sensing information from the transfer request as the sensing information for the terminal device it maintains, and then performs further updates and maintenance based on sensing measurements.

[0143] 310. Node 2 sends a transfer confirmation message to Node 1;

[0144] After receiving the transfer request from Node 1, Node 2 starts a timer. After a preset time, Node 2 sends a transfer confirmation request to Node 1 to indicate that Node 2 has become the maintenance node for the terminal device.

[0145] 311. Node 1 updates and maintains the node identifier;

[0146] Node 1 changes the identifier of the currently maintained node of the terminal device to the identifier of Node 2. When Node 1 receives a paging message, Node 1 can send a paging message to Node 2 based on the identifier of the currently maintained node of the terminal device, and then Node 2 will send a paging message to the terminal device.

[0147] 312. Node 2 updates and maintains the node identifier;

[0148] Node 2 changes the identifier of the currently maintained node of the terminal device to the identifier of Node 2. When Node 2 receives a paging message, Node 2 can determine that the terminal device is maintained by this node based on the identifier of the currently maintained node of the terminal device. Therefore, Node 2 can directly locate the terminal device based on the locally stored sensing information and send a paging message to the terminal device.

[0149] 313. Node 1 sends an instruction message to Node 3;

[0150] Node 1 sends an instruction message to Node 3, which includes the identifier of the terminal device and the identifier of the maintenance node. Node 3 can be a core network node or the last serving node of the terminal device. The core network or the last serving node of the terminal device can directly send a paging message to Node 2 based on the identifier of the terminal device and the identifier of the maintenance node.

[0151] 314. Node 2 sends an instruction message to Node 3.

[0152] Node 2 sends an instruction message to Node 3, which includes the identifier of the terminal device and the identifier of the maintenance node. The last serving node of the core network or the terminal device can directly send a paging message to Node 2 based on the identifier of the terminal device and the identifier of the maintenance node.

[0153] In practical applications, only any one of steps 311 to 314 may be executed. In this embodiment, any one of steps 311 to 314 may be executed first, followed by step 308, or step 308 may be executed first, followed by any one of steps 311 to 314. The specific execution method is not limited here.

[0154] In this embodiment, by updating the identifier of the current maintenance node of the terminal device, sending an indication message to the core network, or sending an indication message to the last serving node of the terminal device, the paging message can be accurately sent to the current maintenance node of the terminal device, avoiding the transmission of invalid signaling and the generation of invalid beams, and reducing resource waste and signaling overhead.

[0155] II. RAN nodes maintain terminal equipment through relay nodes:

[0156] Referring to Figure 4, in this scenario, Node 1 acts as the maintenance node for the terminal device. It maintains the terminal device through a relay node, which performs sensing measurements on the terminal device and then feeds the results back to Node 1. The terminal device moves to the next maintenance node along with the relay node. When Node 1 detects insufficient signal quality to the relay node (e.g., the signal quality between Node 1 and the relay node is below a first threshold, or the signal quality between Node 2 and the relay node is above a second threshold), a maintenance node transfer from Node 1 to Node 2 for the terminal device can occur. The relay node can be a network node or a UE node.

[0157] In this embodiment of the application, using relay nodes for sensing and measurement can expand the sensing and measurement range of the base station and also share the sensing and measurement load of the base station. When the relay node performs sensing and measurement in a local area, it can also reduce interference within the cell and reduce the energy consumption of the base station compared to using the base station directly for sensing and measurement.

[0158] Please refer to Figure 5. In this scenario, a motion sensing method in this embodiment of the application includes:

[0159] 501. Node 1 sends a perception capability message to Node 2;

[0160] 502. Node 2 sends a perception capability message to Node 1;

[0161] Steps 501 to 502 in this embodiment are similar to steps 301 to 302 in the embodiment shown in Figure 3 above, and will not be described in detail here.

[0162] 503. Node 1 sends a perception request message to the relay node;

[0163] The signal quality from Node 1 to the terminal device is weaker than that from the relay node to the terminal device. Therefore, Node 1 needs to maintain the terminal device through the relay node. Node 1 sends a sensing request message to the relay node, which then performs sensing measurements on the terminal device.

[0164] 504. The relay node performs sensing and measurement on the terminal device;

[0165] The relay node sends a sensing measurement signal to the terminal device and receives the reflected signal of the sensing measurement signal. The relay node obtains the sensing measurement result based on the reflected signal.

[0166] 505. The relay node sends a feedback message to node 1;

[0167] The relay node sends the sensing measurement results and associated relay information to node 1, which then calculates the sensing information based on the sensing measurement results. The associated relay information includes at least one of the following: the relay node's identifier, the relay link's beam information, the relay node's location information, and the channel quality from node 1 to the relay node.

[0168] 506. Node 1 sends a perception request message to Node 2;

[0169] 507. Node 2 performs sensing and measurement on the terminal device;

[0170] 508. Node 2 sends a feedback message to Node 1;

[0171] Steps 506 to 508 in this embodiment are similar to steps 304 to 306 in the embodiment shown in Figure 3 above, and will not be described in detail here.

[0172] 509. The relay node sends channel quality information to node 1;

[0173] The relay node measures the SSB or CSI-RS from node 1 and node 2 to obtain the channel quality from the relay node to node 1 and the channel quality from the relay node to node 2. The relay node then sends channel quality information to node 1, which includes the channel quality from the relay node to node 1 and the channel quality from the relay node to node 2.

[0174] 510. Node 1 determines whether Node 2 meets the transition conditions;

[0175] Node 1 makes a judgment based on the feedback message from Node 2 and the channel quality information from the relay node. Node 1 determines Node 2 as the target node that meets the transfer conditions when the following conditions are met:

[0176] Whether the channel quality between the terminal device and the relay node is higher than a certain threshold;

[0177] The channel quality from relay node to node 2 is consistently better than the channel quality from relay node to node 1;

[0178] The self-sensing quality from node 1 to the terminal device is worse than that from the relay node to the terminal device.

[0179] The self-sensing quality from node 2 to the terminal device is worse than that from the relay node to the terminal device.

[0180] 511. Node 1 sends a transfer request to Node 2;

[0181] After determining the target node, Node 1, as the source node, sends a transfer request to Node 2, which is the target node, to request Node 2 to act as the maintenance node for the terminal device. The transfer request includes the identifiers of Node 1, Node 2, and the relay node.

[0182] 512. Node 1 sends a relay handover request to Node 2;

[0183] Node 1 sends a relay handover request to Node 2, switching the node connected to the relay node from Node 1 to Node 2. Node 2 then uses the relay node to maintain the terminal device. The sensing information corresponding to the terminal device can be carried in either the handover request or the relay handover request. Node 1 can send the associated relay information to Node 2 in either the relay handover request or the handover request.

[0184] 513. Node 2 performs maintenance on the terminal equipment;

[0185] Node 2 sends a sensing request message to the relay node, which then sends a sensing measurement signal to the terminal device. The sensing measurement result is obtained based on the reflected signal of the sensing measurement signal. The relay node sends the sensing measurement result back to Node 2, and Node 2 updates the associated relay information and sensing information based on the sensing measurement result.

[0186] 514. Node 2 sends a transfer confirmation message to Node 1;

[0187] 515. Node 1 updates and maintains the node identifier;

[0188] 516. Node 2 updates and maintains the node identifier;

[0189] 517. Node 1 sends an instruction message to Node 3;

[0190] 518. Node 2 sends an instruction message to Node 3.

[0191] Steps 514 to 518 in this embodiment are similar to steps 310 to 314 in the embodiment shown in Figure 3 above, and will not be described in detail here.

[0192] 3. Node 1 maintains the terminal devices through the management node;

[0193] Please refer to Figure 6. In this scenario, both Node 1 and Node 2 are centralized SEMF nodes. Node 1 acts as the maintenance node for the terminal devices, maintaining them through the management node. Nodes 1-1 and / or 1-2 under Node 1 perform sensing measurements on the terminal devices and then feed the results back to Node 1. When the signal quality from Node 1-1 to the terminal devices is insufficient (e.g., below the first threshold), or the signal quality from Node 2-1 to the terminal devices is above the second threshold, a transfer of maintenance node status from Node 1 to Node 2 can occur. A centralized SEMF node can be a standalone node, such as a cloud RAN node, a network node with SEMF functionality, or a core network node. A centralized SEMF node can have multiple management nodes; the following description uses two management nodes as an example.

[0194] Please refer to Figure 7. In this scenario, a motion sensing method in this embodiment of the application includes:

[0195] 701. Node 1 sends a perception capability message to Node 1-1 and Node 1-2;

[0196] Node 1 is a centralized SEMF node with SEMF capabilities. It sends a perception capability message to its management node, which indicates that Node 1 has SEMF capabilities.

[0197] In practical applications, the perception capability message can also include the duplex capability of node 1, which indicates that the node has full-duplex capability or half-duplex capability.

[0198] 702. Node 1-1 or Node 1-2 sends a perception capability message to Node 1;

[0199] Node 1-1 or Node 1-2 has SEMF and sends a sensing capability message to Node 1 to indicate that the node has SEMF, or it can be used to indicate that the node has full-duplex capability or half-duplex capability.

[0200] 703. Node 2 sends a perception capability message to Node 2-1 and Node 2-2;

[0201] Node 2 is a centralized SEMF node with SEMF capabilities. It sends a perception capability message to its management node. This capability message indicates that Node 2 has SEMF capabilities, or it can indicate that the node has full-duplex or half-duplex capabilities.

[0202] 704. Node 2-1 or Node 2-2 sends a perception capability message to Node 2;

[0203] Node 2-1 or Node 2-2 has SEMF and sends a sensing capability message to Node 2 to indicate that the node has SEMF, or it can be used to indicate that the node has full-duplex capability or half-duplex capability.

[0204] 705. Node 1 sends a perception request message to Node 1-1 and Node 1-2;

[0205] Node 1 maintains the terminal device through the management node. Node 1 sends a sensing request message to management nodes 1-1 and 1-2, requesting them to send sensing measurement signals to the terminal device. The sensing request message includes information for locating the terminal device and a sensing measurement feedback request.

[0206] 706. Nodes 1-1 and 1-2 perform sensing measurements on the terminal devices;

[0207] Node 1-1 and Node 1-2 send sensing measurement signals to the terminal device and obtain sensing measurement results based on the reflected signals of their respective sent sensing measurement signals.

[0208] 707. Nodes 1-1 and 1-2 send feedback messages to Node 1;

[0209] Nodes 1-1 and 1-2 send the sensing measurement results to Node 1 via feedback messages. Node 1 calculates the sensing information based on the received sensing measurement results. When Node 1 detects a decrease in the signal quality from the node it manages to the terminal device, it executes step 708.

[0210] 708. Node 1 sends a perception request message to Node 2;

[0211] Step 708 in this embodiment is similar to step 304 in the embodiment shown in Figure 3 above, and will not be described in detail here.

[0212] 709. Node 2 sends a perception request message to Node 2-1 and Node 2-2;

[0213] Node 2 performs sensing measurements on the terminal device through the nodes it manages. Node 2 sends sensing request messages to Node 2-1 and Node 2-2, requesting Node 2-1 and Node 2-2 to send sensing measurement signals to the terminal device. The sensing request message includes information for locating the terminal device and sensing measurement feedback requirements.

[0214] 710. Nodes 2-1 and 2-2 perform sensing measurements on the terminal devices;

[0215] Node 2-1 and Node 2-2 send sensing measurement signals to the terminal device and obtain sensing measurement results based on the reflected signals of their respective sent sensing measurement signals.

[0216] 711. Nodes 2-1 and 2-2 send feedback messages to Node 2;

[0217] Node 2-1 and Node 2-2 send the sensing measurement results to Node 2 via feedback messages. Node 2 can then calculate the measurement information based on the received sensing measurement results.

[0218] 712. Node 2 sends a feedback message to Node 1;

[0219] 713. Node 1 determines whether Node 2 meets the transition conditions;

[0220] 714. Node 1 sends a transfer request to Node 2;

[0221] 715. Node 2 performs maintenance on the terminal equipment;

[0222] 716. Node 2 sends a transfer confirmation message to Node 1;

[0223] 717. Node 1 updates and maintains the node identifier;

[0224] 718. Node 2 updates and maintains the node identifier;

[0225] 719. Node 1 sends an instruction message to Node 3;

[0226] 720. Node 2 sends an instruction message to Node 3.

[0227] Steps 712 to 720 in this embodiment are similar to steps 306 to 314 in the embodiment shown in Figure 3 above, and will not be described in detail here.

[0228] IV. The transfer of the current maintenance node of the terminal device is initiated by the centralized node.

[0229] Please refer to Figure 8. In this scenario, the terminal device is maintained by the centralized SEMF node through node 1. When the centralized SEMF node finds that the channel quality from node 1 to the terminal device is weaker than the channel quality from node 2 to the terminal device, it switches to maintaining the terminal device through node 2 and updating the local link information.

[0230] Please refer to Figure 9. In this scenario, a motion sensing method in this embodiment of the application includes:

[0231] 901. The centralized node sends perception capability messages to node 1 and node 2;

[0232] 902. Node 1 and Node 2 send perception capability messages to the centralized node;

[0233] Steps 901 to 902 in this embodiment are similar to steps 701 to 702 in the embodiment shown in Figure 7 above, and will not be described in detail here.

[0234] In practical applications, steps 901 and 902 can be skipped, and step 903 can be executed directly.

[0235] 903. The centralized node sends a perception request message to node 1;

[0236] 904. Node 1 performs sensing and measurement on the terminal device;

[0237] 905. Node 1 sends a feedback message to the centralized node;

[0238] Steps 903 to 905 in this embodiment are similar to steps 705 to 707 in the embodiment shown in Figure 7 above, and will not be described in detail here.

[0239] When the centralized node discovers that the channel quality from node 1 to the terminal device is weakened, or when the centralized node discovers that the channel quality from node 2 to the terminal device is stronger, step 906 is executed.

[0240] 906. The centralized node sends a perception request message to node 2;

[0241] 907. Node 2 performs sensing and measurement on the terminal device;

[0242] 908. Node 2 sends a feedback message to the centralized node;

[0243] Steps 906 to 908 in this embodiment are similar to steps 705 to 707 in the embodiment shown in Figure 7 above, and will not be described in detail here.

[0244] 909. Centralized node updates link information;

[0245] If the centralized node determines that node 2 is the target node, it updates the link information stored locally. The centralized node replaces the identifier of node 1 with the identifier of node 2. If node 1 is also connected to a relay node, the centralized node also adds link information, beam information, or channel quality information from node 2 to the relay node.

[0246] 910. The centralized node sends an instruction message to node 3;

[0247] The indication message sent by the centralized node or node 2 to node 3 includes the identifier of the centralized node or the identifier of node 2. Specifically, if the centralized node has communication capabilities, the indication message includes the identifier of the centralized node; if the centralized node does not have communication capabilities, the indication message includes the identifier of node 2.

[0248] In practical applications, the centralized node can be located in the core network or can be a functional entity of the core network. In this case, step 909 can be omitted.

[0249] The motion sensing method in the embodiments of this application has been described above. The source node and target node in the embodiments of this application are described below. Please refer to Figure 10. One embodiment of the source node in the embodiments of this application includes:

[0250] The acquisition unit 1001 is used to acquire the sensing information of the terminal device, including location information.

[0251] The sending unit 1002 is used to send a transfer request to the target node. The transfer request includes sensing information and is used to request the target node to maintain the terminal equipment.

[0252] Please refer to Figure 11. One embodiment of the target node in this application includes:

[0253] The receiving unit 1101 is used to receive a transfer request from the source node. The transfer request includes sensing information, which includes location information.

[0254] The sensing and measurement unit 1102 is used to perform sensing and measurement on the terminal device.

[0255] The following describes a source node provided in an embodiment of this application. Please refer to Figure 12, which is a schematic diagram of a source node provided in an embodiment of this application.

[0256] The source node specifically includes:

[0257] Processor 1201, memory 1202, input / output unit 1203, bus 1204;

[0258] The processor 1201 is connected to the memory 1202, the input / output unit 1203 and the bus 1204;

[0259] The program is stored in memory 1202;

[0260] The processor 1201 executes the program in the memory 1202, causing the source node to perform the method described in the foregoing embodiments.

[0261] Please refer to Figure 13, which is a schematic diagram of a target node provided in an embodiment of this application.

[0262] The target nodes specifically include:

[0263] Processor 1301, memory 1302, input / output unit 1303, bus 1304;

[0264] The processor 1301 is connected to the memory 1302, the input / output unit 1303, and the bus 1304;

[0265] The program is stored in memory 1302;

[0266] The processor 1301 executes the program in the memory 1302, causing the target node to perform the method described in the foregoing embodiments.

[0267] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0268] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0269] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0270] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0271] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, 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.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes 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.

Claims

1. A motion sensing method, characterized in that, The method includes: Acquire sensing information from the terminal device, the sensing information including location information; A transfer request is sent to the target node. The transfer request includes the perception information and is used to request the target node to maintain the terminal device.

2. The motion sensing method according to claim 1, characterized in that, The location information includes at least one of the following: The coordinates, position, distance, speed, angle, or direction of movement of the terminal device.

3. The motion sensing method according to claim 1 or 2, characterized in that, The perceived information also includes at least one of the following: Signal strength, delay, Doppler shift, path components of the multipath, beam information, measurement time, time interval, number of measurements, and the identifier, type, shape, material, size, or image of the terminal device from the source node to the terminal device or from the target node to the terminal device.

4. The motion sensing method according to any one of claims 1 to 3, characterized in that, The terminal device includes a low-power terminal device or a non-connected terminal device. The non-connected terminal device includes a passive terminal device, an idle terminal device, or an inactive terminal device.

5. The motion sensing method according to claim 4, characterized in that, If the terminal device is a low-power terminal device or an idle terminal device, then the identifier of the terminal device is a Sensitive Radio Access Network Temporary Identifier (SE-RNTI) or a Truncated Temporary Mobile Subscription Identifier (S-TMSI). The SE-RNTI includes a first identifier and a second identifier. The first identifier corresponds to the terminal device, and the second identifier corresponds to the maintenance node of the terminal device. The maintenance node is used to maintain the terminal device. If the terminal device is a passive terminal device, the identifier of the terminal device includes a third identifier and a fourth identifier. The third identifier corresponds to the terminal device, and the fourth identifier corresponds to the maintenance node of the terminal device and / or the beam used by the terminal device. The maintenance node is used to maintain the terminal device.

6. The motion sensing method according to claim 5, characterized in that, The third identifier is a shared identifier, which is used to identify the passive terminal device and at least one other passive terminal device located in the same cell as the passive terminal device. And / or, The shared identifier is used to identify the passive terminal device and at least one other passive terminal device that uses the same beam as the passive terminal device.

7. The motion sensing method according to any one of claims 1 to 6, characterized in that, After sending the transfer request to the target node, the method further includes: Receive a transfer confirmation message from the target node.

8. The motion sensing method according to any one of claims 1 to 7, characterized in that, Before sending the transfer request to the target node, the method further includes: Receive a first feedback message, which includes the sensing measurement results or judgment results of the terminal device.

9. The motion sensing method according to any one of claims 1 to 8, characterized in that, After acquiring the sensing information of the terminal device, the method further includes: A relay handover request is sent to the target node. The relay handover request is used to instruct the relay node to migrate to the target node. The relay node is used to sense the terminal device. The relay handover request includes the sensed information.

10. The motion sensing method according to any one of claims 1 to 9, characterized in that, After acquiring the sensing information of the terminal device, the method further includes: A first indication message is sent to the core network or the last serving node of the terminal device. The first indication message includes the identifier of the target node and the identifier of the terminal device.

11. The motion sensing method according to any one of claims 1 to 10, characterized in that, The acquisition of the sensing information of the terminal device includes: Receive the sensed information; or, The sensing information of the terminal device is obtained through sensing measurements.

12. The motion sensing method according to any one of claims 1 to 11, characterized in that, The acquisition of the sensing information of the terminal device includes: Obtain the sensing measurement results of the terminal device; The perception information is obtained based on the perception measurement results.

13. The motion sensing method according to any one of claims 1 to 12, characterized in that, Before sending the transfer request to the target node, the method further includes: The target node is determined based on the signal strength from the source node to the terminal device; And / or, The target node is determined based on the signal strength from the target node to the terminal device.

14. The motion sensing method according to any one of claims 1 to 13, characterized in that, Before acquiring the sensing information of the terminal device, the method further includes: Send a first capability message to the target node, the first capability message being used to indicate that the source node has a Sensing Management Function (SEMF); And / or, Receive a second capability message from the target node, the second capability message being used to indicate that the target node has SEMF.

15. A motion sensing method, characterized in that, The method includes: Receive a transfer request from the source node, the transfer request including sensing information, the sensing information including location information; Perform sensing and measurement on terminal devices.

16. The motion sensing method according to claim 15, characterized in that, The location information includes at least one of the following: The coordinates, position, distance, speed, angle, or direction of movement of the terminal device.

17. The motion sensing method according to claim 16, characterized in that, The perceived information also includes at least one of the following: The signal strength, delay, Doppler shift, path components of the multipath from the source node to the terminal device or from the target node to the terminal device, measurement time, time interval, number of measurements, and the identifier, type, beam information, shape, material, size, or image of the terminal device.

18. The motion sensing method according to any one of claims 15 to 17, characterized in that, The terminal device includes a low-power terminal device or a non-connected terminal device. The non-connected terminal device includes a passive terminal device, an idle terminal device, and an inactive terminal device.

19. The motion sensing method according to claim 18, characterized in that, If the terminal device is a low-power terminal device or an idle terminal device, then the identifier of the terminal device is a Sensitive Radio Access Network Temporary Identifier (SE-RNTI) or a Truncated Temporary Mobile Subscription Identifier (S-TMSI). The SE-RNTI includes a first identifier and a second identifier. The first identifier corresponds to the terminal device, and the second identifier corresponds to the maintenance node of the terminal device. The maintenance node is used to maintain the terminal device. If the terminal device is a passive terminal device, the identifier of the terminal device includes a third identifier and a fourth identifier. The third identifier corresponds to the terminal device, and the fourth identifier corresponds to the maintenance node of the terminal device or the beam used by the terminal device. The maintenance node is used to maintain the terminal device.

20. The motion sensing method according to claim 19, characterized in that, The third identifier is a shared identifier, which is used to identify the passive terminal device and at least one other passive terminal device located in the same cell as the passive terminal device. or, The shared identifier is used to identify the passive terminal device and at least one other passive terminal device that uses the same beam as the passive terminal device.

21. The motion sensing method according to any one of claims 15 to 20, characterized in that, After performing sensing and measurement on the terminal device, the method further includes: Send a transfer confirmation message to the source node.

22. The motion sensing method according to any one of claims 15 to 21, characterized in that, Before receiving the transfer request from the source node, the method further includes: A first feedback message is sent to the source node, the first feedback message including the perception measurement result or judgment result of the terminal device.

23. The motion sensing method according to any one of claims 15 to 22, characterized in that, Before performing sensing measurements on the terminal device, the method further includes: Receive a relay switching request from the source node, the relay switching request being used to instruct the relay node to migrate to the target node.

24. The motion sensing method according to any one of claims 15 to 23, characterized in that, The method further includes: A second indication message is sent to the core network or the last serving node of the terminal device. The second indication message includes the identifier of the target node and the identifier of the terminal device.

25. The motion sensing method according to any one of claims 15 to 24, characterized in that, Before receiving the transfer request from the source node, the method further includes: Send the sensing measurement results to the source node.

26. The motion sensing method according to any one of claims 15 to 25, characterized in that, Before receiving the transfer request from the source node, the method further includes: Send the signal status information of the target node to the terminal device to the source node.

27. The motion sensing method according to any one of claims 15 to 26, characterized in that, Before receiving the transfer request from the source node, the method further includes: Receive a first capability message from the source node, the first capability message being used to indicate that the source node has a Sensing Management Function (SEMF); And / or, A second capability message is sent to the source node, the second capability message being used to indicate that the target node has SEMF.

28. A communication device, characterized in that, include: An acquisition unit is used to acquire sensing information from a terminal device, the sensing information including location information; A sending unit is used to send a transfer request to a target node. The transfer request includes the sensing information and is used to request the target node to maintain the terminal device.

29. A communication device, characterized in that, include: A receiving unit is configured to receive a transfer request from a source node, the transfer request including sensing information, the sensing information including location information; The sensing and measurement unit is used to perform sensing and measurement on the terminal device.

30. A communication device, characterized in that, include: A processor and a memory, wherein the processor is coupled to the memory; The memory is used to store programs; The processor is configured to execute a program in the memory, causing the source node to perform the method as described in any one of claims 1 to 14.

31. A communication device, characterized in that, include: A processor and a memory, wherein the processor is coupled to the memory; The memory is used to store programs; The processor is configured to execute a program in the memory, causing the target node to perform the method as described in any one of claims 15 to 27.

32. A mobile sensing system, characterized in that, include: The communication device as claimed in any one of claims 1 to 14, and the communication device as claimed in any one of claims 15 to 27; or, A relay node, a communication device as described in any one of claims 1 to 14, and a communication device as described in any one of claims 15 to 27; or, The core network node, the communication device as described in any one of claims 1 to 14, and the communication device as described in any one of claims 15 to 27.

33. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method as claimed in any one of claims 1 to 14, or cause the computer to perform the method as claimed in any one of claims 15 to 27.

34. A computer program product comprising instructions that, when run on a computer, cause the computer to perform the method as claimed in any one of claims 1 to 14, or cause the computer to perform the method as claimed in any one of claims 15 to 17.

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