Paging monitoring method, terminal, and service base station

Abstract

The present application relates to the technical field of communications, and discloses a paging monitoring method, a terminal, and a service base station. The paging monitoring method of the present application comprises: a relay UE receives paging assistance information; the relay UE determines whether the relay UE is a first relay UE, the paging assistance information being used for assisting the first relay UE in monitoring a paging message for a remote UE; and when determining that the relay UE is the first relay UE, the relay UE monitors a paging message and forwards the monitored paging message to the remote UE; or when determining that the relay UE is not the first relay UE, the relay UE forwards the paging assistance information to a previous-hop relay UE of the relay UE. The first relay UE monitors a paging message for the remote UE, so that the problem that a relay UE in a state without network signal coverage cannot monitor a paging message for a remote UE and the problem that the remote UE in the state without network signal coverage cannot monitor its own paging message are solved.

Description

Paging monitoring method, terminal and service base station

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 13, 2023, with application number 202311720373.1 and titled “A Paging Monitoring Method, Terminal and Service Base Station,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a paging monitoring method, a terminal, and a service base station. Background Art

[0004] In a single-hop L2 UE-to-Network (U2N) relay network of R17 / R18, after a remote user equipment (UE) establishes a PC5 RRC (Proximity Communication Radio Resource Control) connection with a relay UE, it can send a paging monitoring request to the relay UE, so that the relay UE helps the remote UE monitor the paging signal from the serving base station and forwards the received paging signal to the target remote UE.

[0005] However, when the relay UE is in an Out Of Coverage (OOC) state, the relay UE cannot monitor paging messages for the remote UE, resulting in the remote UE being unable to receive its own paging message. Therefore, the existing paging mechanism needs to be improved. Summary of the Invention

[0006] The embodiments of the present application provide a paging monitoring method, terminal and service base station, which can solve the problem that a relay UE in a state without network signal coverage cannot monitor paging messages for a remote UE and the problem that a remote UE in a state without network signal coverage cannot monitor its own paging messages.

[0007] In a first aspect, a paging monitoring method is provided, by a relay terminal, the method comprising:

[0008] The relay UE receives the paging assistance information;

[0009] The relay UE determines whether it belongs to a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring a paging message for the remote UE;

[0010] The relay UE monitors a paging message when determining that it belongs to the first relay UE, and forwards the monitored paging message to the remote UE; or

[0011] When the relay UE determines that it does not belong to the first relay UE, the relay UE forwards the paging assistance information to the previous-hop relay UE of the relay UE.

[0012] In a second aspect, a paging monitoring method is provided, the method comprising:

[0013] When a first relay UE receives paging assistance information from a remote UE sent by a first sub-UE, the first relay UE records a correspondence between an identifier of the remote UE and an identifier of the first sub-UE, where the first sub-UE is a next-hop relay UE of the first relay UE; the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0014] The first relay UE forwards the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

[0015] In a third aspect, a paging monitoring method is provided, the method comprising:

[0016] When the second relay UE receives the paging assistance information sent by the second sub-UE from the remote UE, the correspondence between the identifier of the remote UE and the identifier of the second sub-UE is recorded, where the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is the relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is any number of transmission hops away from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0017] The second relay UE forwards the received paging message to the second sub-UE according to the corresponding relationship.

[0018] In a fourth aspect, a paging monitoring method is provided, the method comprising:

[0019] The remote UE sends paging assistance information;

[0020] The remote UE receives a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the remote UE's serving base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0021] In a fifth aspect, a paging monitoring method is provided, the method comprising:

[0022] The serving base station receives paging assistance information from a remote UE forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​the serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the downstream UE of the first relay UE includes at least: the remote UE accessing the serving base station through the first relay UE;

[0023] The serving base station sends the received paging message including the identifier of any downstream UE of the first relay UE to the first relay UE.

[0024] In a sixth aspect, a paging monitoring method is provided, the method comprising:

[0025] The serving base station receives the paging assistance information sent by the remote UE;

[0026] The serving base station sends the paging assistance information to a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is within an arbitrary number of transmission hops from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0027] In a seventh aspect, a paging monitoring device is provided, the device comprising:

[0028] A first receiving module, configured to receive paging auxiliary information;

[0029] a first determining module, configured to determine whether the first relay UE belongs to a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0030] a first auxiliary monitoring module, configured to monitor a paging message when determining that the first relay UE belongs to the first relay UE, and forward the monitored paging message to the remote UE; or

[0031] The first forwarding module is configured to forward the paging assistance information to the previous-hop relay UE of the relay UE when determining that the first relay UE does not belong to the first relay UE.

[0032] In an eighth aspect, a paging monitoring device is provided, the device comprising:

[0033] A first recording module is configured to record, when a first relay UE receives paging assistance information from a remote UE sent by a first sub-UE, a correspondence between an identifier of the remote UE and an identifier of the first sub-UE, where the first sub-UE is a next-hop relay UE of the first relay UE; the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0034] The first forwarding module is configured to forward the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

[0035] In a ninth aspect, a paging monitoring device is provided, the device comprising:

[0036] A second recording module is configured to record, when the second relay UE receives paging assistance information sent by the second sub-UE from the remote UE, a correspondence between the identifier of the remote UE and the identifier of the second sub-UE, where the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is a relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0037] The third forwarding module is configured to forward the received paging message to the second sub-UE according to the corresponding relationship.

[0038] In a tenth aspect, a paging monitoring device is provided, the device comprising:

[0039] A third sending module is used to send paging auxiliary information;

[0040] The second receiving module is used to receive a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any transmission hop distance from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE.

[0041] In an eleventh aspect, a paging monitoring device is provided, the device comprising:

[0042] a sixth receiving module, configured to receive paging assistance information from a remote UE forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any number of transmission hops from the remote UE, and the downstream UE of the first relay UE includes at least: the remote UE accessing the serving base station through the first relay UE;

[0043] The fourth sending module is used to send the received paging message containing the identifier of any downstream UE of the first relay UE to the first relay UE.

[0044] In a twelfth aspect, a paging monitoring device is provided, the device comprising:

[0045] a seventh receiving module, configured to receive paging auxiliary information sent by a remote UE;

[0046] The fifth sending module is used to send the paging assistance information to the first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the service base station of the remote UE and is within any transmission hop distance from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0047] In the thirteenth aspect, a relay terminal is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect, the second aspect, or the third aspect are implemented.

[0048] In a fourteenth aspect, a remote terminal is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method described in the fourth aspect are implemented.

[0049] In the fifteenth aspect, a service base station is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the fifth aspect are implemented, or the steps of the method described in the sixth aspect are implemented.

[0050] In the sixteenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in any one of the first to sixth aspects are implemented.

[0051] In the seventeenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in any one of the first to sixth aspects.

[0052] In the eighteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in any one of the first to sixth aspects.

[0053] In an embodiment of the present application, a relay UE receives paging assistance information, and the relay UE determines whether it belongs to the first relay UE. When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or, when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous-hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the serving base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, and a relay UE that has a radio resource control RRC connection with the serving base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0055] FIG2 is a schematic diagram of a single-hop L2 U2N relay network in an embodiment of the present application;

[0056] FIG3 is a schematic diagram of a multi-hop L2 U2N relay network in an embodiment of the present application;

[0057] FIG4 is a schematic diagram showing a definition of a multi-hop L2 U2N relay network according to an embodiment of the present application;

[0058] FIG5 is a flow chart of a paging monitoring method applied to a relay terminal in an embodiment of the present application;

[0059] FIG6 is a schematic diagram of another multi-hop L2 U2N relay network in an embodiment of the present application;

[0060] 7 is a flowchart of a paging monitoring method applied to a first relay terminal in an embodiment of the present application;

[0061] 8 is a flowchart of a paging monitoring method applied to a second relay terminal in an embodiment of the present application;

[0062] 9 is a flowchart of a paging monitoring method applied to a remote terminal in an embodiment of the present application;

[0063] FIG10 is a flowchart of a paging monitoring method applied to a serving base station in an embodiment of the present application;

[0064] FIG11 is a flowchart of another paging monitoring method applied to a serving base station in an embodiment of the present application;

[0065] 12 is a schematic diagram of a paging monitoring device applied to a relay terminal in an embodiment of the present application;

[0066] 13 is a flowchart of a paging monitoring device applied to a first relay terminal in an embodiment of the present application;

[0067] 14 is a flowchart of a paging monitoring device applied to a second relay terminal in an embodiment of the present application;

[0068] 15 is a flowchart of a paging monitoring device applied to a remote terminal in an embodiment of the present application;

[0069] FIG16 is a flow chart of a paging monitoring device applied to a serving base station in an embodiment of the present application;

[0070] FIG17 is a flowchart of another paging monitoring device applied to a serving base station in an embodiment of the present application;

[0071] FIG18 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0072] FIG19 is a schematic structural diagram of a terminal in an embodiment of the present application;

[0073] Figure 20 is a structural diagram of a service base station in an embodiment of the present application. DETAILED DESCRIPTION

[0074] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0075] The terms "first," "second," and the like in this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable, where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein. Furthermore, the objects distinguished by "first" and "second" generally refer to a class and do not limit the number of objects. For example, the first object can be one or more. Furthermore, "or" in this application represents at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three options: Option 1: includes A but not B; Option 2: includes B but not A; and Option 3: includes both A and B. Furthermore, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three options, respectively. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0076] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0077] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0078] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, an aircraft, a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (a household appliance with wireless communication capabilities, such as a refrigerator, a television, a washing machine, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side device. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmit / Receive Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0079] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0080] To facilitate understanding of the technical solutions provided by this application, the main technical concepts involved in the embodiments of this application are briefly described below.

[0081] Single-hop L2 U2N relay wireless network:

[0082] A sidelink refers to the wireless link between UEs in NR / LTE, through which two UEs can directly transmit data. The wireless link between the sidelinks is also called a PC5 link and runs the PC5 protocol. In 3GPP Rel-17, a UE is used to provide relay services between the UE and the network. As shown in Figure 2, the UE providing the relay service is called a relay UE (i.e., relay UE), and the UE to which the relay service is provided is called a remote UE (i.e., remote UE). The link between the relay UE and the remote UE is a PC5 link, running the sidelink interface protocol. The link between the relay UE and the base station is a Uu link, running the Uu link protocol.

[0083] The sidelink radio interface control plane includes the PC5 RRC protocol, running above the Packet Data Convergence Protocol (PDCP) and Radio Link Control (RLC) layers, with the Media Access Control (MAC) and Physical layers at the bottom. The sidelink radio interface user plane, from top to bottom, includes the Service Data Adaptation Protocol (SDAP), PDCP, RLC, MAC, and Physical layers.

[0084] Sidelink U2N relay includes Layer 2 (L2) U2N relay and Layer 3 (L3) U2N relay. L2 U2N relay refers to the relay UE forwarding remote UE data at Layer 2, while L3 U2N relay refers to the relay UE forwarding remote UE data at Layer 3. L2 U2N relay introduces the Sidelink Relay Adaptation Protocol (SRAP) layer for data routing. This layer carries the local identification information (local UE ID) of the remote UE and the radio bearer identification information between the remote UE and the base station. The relay UE uses this information to map the input logical channel to the output logical channel for forwarded data. For uplink Protocol Data Units (PDUs) forwarded to the base station via a relay UE, the remote UE adds an SRAP header to the PDU to generate an SRAP PDU. After receiving the SRAP PDU, the relay UE forwards it based on the SRAP header. After receiving the SRAP PDU, the base station determines the corresponding PDCP entity based on the information carried by the SRAP, removes the SRAP header, and submits the corresponding service data unit (SDU) to the PDCP entity. For downlink PDUs forwarded to the remote UE via a relay UE, the base station adds an SRAP header to the PDU to generate an SRAP PDU. After receiving the SRAP PDU, the relay UE forwards it based on the SRAP header. After receiving the SRAP PDU, the remote UE determines the corresponding PDCP entity based on the information carried by the SRAP, removes the SRAP header, and submits the corresponding SDU to the PDCP entity.

[0085] Paging mechanism in a single-hop L2 U2N relay network:

[0086] In a single-hop L2 U2N relay wireless network, when a remote UE is about to enter the Radio Resource Control Idle (RRC_IDLE) or Radio Resource Control Inactive (RRC_INACTIVE) state, it can send paging assistance information to the relay UE, requesting the relay UE to monitor paging messages belonging to the remote UE and forward received paging messages belonging to the remote UE to the remote UE. The paging assistance information includes the identification information of the remote UE and configuration information used to determine the paging monitoring time-frequency window of the remote UE (for example, discontinuous reception (DRX) configuration information used to determine the time-frequency position of sequential information transmission).

[0087] When the remote UE is about to enter the RRC_IDLE state or before entering the RRC_IDLE state, it needs to send the terminal 5G identity (ng-5G-S-TMSI) and the DRX configuration for monitoring paging messages to the relay UE; or when the remote UE is about to enter the RRC_INACTIVE state or before entering the RRC_INACTIVE state, it needs to send the ng-5G-S-TMSI, radio network temporary identity (fullI-RNTI) and the DRX configuration for monitoring paging messages to the relay UE. If the relay UE is in the RRC_IDLE state or RRC_INACTIVE state, the relay UE determines the time-frequency resource location where it needs to monitor the paging message based on the received auxiliary information, and helps the remote UE monitor the paging message; if the relay UE is in the RRC_CONNECTED state, it uses the SidelinkUEInformationNR IE to report the identification information of the remote UE to the base station. When the base station needs to page these remote UEs, it sends the paging message to this relay UE, and the relay UE forwards the paging message to the remote UE.

[0088] Multi-hop L2 U2N relay wireless network:

[0089] As shown in Figure 3, in a multi-hop L2 U2N relay wireless network, a remote UE can establish a wireless connection with a base station through multiple serially connected L2 U2N relay UEs. The remote UE's uplink and downlink messages must be relayed between the multiple L2 U2N relay UEs to complete transmission between the remote UE and the base station. In a multi-hop L2 U2N relay wireless network, an adaptation layer is still required to guide data forwarding and identify end-to-end data packets. The packet header format and routing mechanism of the adaptation layer may be modified from those in a single-hop L2 U2N relay wireless network to accommodate the routing requirements of multiple networks.

[0090] In a single-hop L2 U2N relay network, the paging mechanism in which a remote UE sends paging assistance information to the access relay UE, allowing the access relay UE to monitor paging messages on its behalf, requires the access relay UE to be within network coverage. However, in a multi-hop L2 U2N relay wireless network, there may be one or more relay UEs between the remote UE and the serving base station. Some of these relay UEs may be out of coverage (OOC) and unable to monitor paging messages for the remote UE they serve.

[0091] Therefore, an embodiment of the present application provides a paging monitoring method, in which a relay UE receives paging assistance information, the relay UE determines whether it belongs to a first relay UE, and when the relay UE determines that it belongs to the first relay UE, monitors the paging message, and forwards the monitored paging message to the remote UE; or when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous-hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the service base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE having a radio resource control RRC connection with the service base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message.

[0092] In addition, considering that in a multi-hop L2 U2N relay network, there are one or more relay UEs between the remote UE and the serving base station, the access relay UE may not be within the coverage of the network. Therefore, the paging mechanism in the single-hop L2 U2N relay network is not suitable for the paging message monitoring of the remote UE in the multi-hop L2 U2N relay network. Using the technical solution provided by the embodiment of the present application, the first relay UE is a relay UE within the network coverage area of ​​the serving base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE that has a radio resource control RRC connection with the serving base station, which can monitor and forward paging messages for the remote UE, thereby solving the problem that the access relay UE cannot monitor the paging messages of the remote UE it serves.

[0093] The paging monitoring method provided by the embodiment of the present application is described in detail below with reference to some embodiments and application scenarios in conjunction with the accompanying drawings.

[0094] For ease of description, a multi-hop L2 U2N relay network is referred to as a multi-hop relay network, and relay UEs in a multi-hop relay network are defined. As shown in Figure 4, relay UEs can be divided into the following categories relative to remote UEs:

[0095] (1) Host relay UE: The host relay establishes a Uu connection with the serving base station, or can establish a Uu connection with the serving base station to help downstream UEs forward data and signaling to the serving base station, and helps forward data and signaling from the base station to downstream UEs.

[0096] (2) Access relay UE: Establishes a PC5 connection with the remote UE, helps the remote UE to forward uplink and downlink data and signaling, and serves as the access relay for the remote UE.

[0097] (3) Intermediate relay UE: A relay UE that intervenes between the access relay and the host relay to help the remote UE complete data and signaling forwarding between the access relay and the host relay. In a multi-hop relay network, there can be zero, one, or more intermediate relays between the access relay and the host relay of a remote relay.

[0098] (4) Downstream UE: All UEs that access the network through a relay UE become downstream UEs of the relay UE.

[0099] (5) Upstream UE: A relay UE that forwards uplink and downlink data and signaling for a UE is the upstream UE of the UE.

[0100] (6) Child UE and Parent UE: The previous-hop relay UE of a relay UE is its parent UE, and the next-hop relay UE of a relay UE is its child UE. For example, relay UE a establishes a PC5 connection with its previous-hop relay UE b to access the network. Relay UE b is UE a's parent UE, and relay UE a is UE b's child UE.

[0101] It should be noted that the access relay UE shown in Figure 4 also has the identity of a remote UE relative to the intermediate relay UE; and the intermediate relay UE also has the identity of a remote UE relative to the host relay UE, and so on. This application will not be further described in detail. Similarly, for ease of description, the single-hop L2 U2N relay network is referred to as a single-hop relay network. In the embodiments of this application, paging message, paging signal, and paging information have the same meaning. Remote terminal has the same meaning as remote UE or remote user equipment.

[0102] In a first aspect of an embodiment of the present application, a paging monitoring method is provided. The method is applied to a relay terminal. FIG5 is a flowchart of an implementation of the paging monitoring method provided in an embodiment of the present application. The method may include the following steps:

[0103] Step S510: The relay UE receives paging assistance information;

[0104] Step S520: The relay UE determines whether it is a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and at any transmission hop distance from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0105] Step S530: When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE.

[0106] In the embodiment of the present application, the relay UE and the remote UE may be the terminal device 11 in FIG1 . For examples of the terminal device 11 , please refer to the above text and will not be repeated here.

[0107] Specifically, the relay UE receives paging assistance information and determines whether it belongs to the first relay UE. Then, when the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE to implement paging monitoring. The relay UE can be the access relay UE, intermediate relay UE, and host relay UE in Figure 4. Any transmission hop number from the remote UE can be 1 hop or more than 1 hop. As shown in Figure 4, in a multi-hop relay network scenario, the first relay UE can be the host relay UE, and the transmission hop number from the first relay UE to the remote UE is 3 hops; if the intermediate relay UE is within the network coverage area of ​​the remote UE's service base station, the first relay UE can be the intermediate relay UE, and the transmission hop number from the first relay UE to the remote UE is 2 hops; if the access relay UE is within the network coverage area of ​​the remote UE's service base station, the first relay UE can also be the access relay UE, and the transmission hop number from the first relay UE to the remote UE is 1 hop.

[0108] When the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the relay UE's previous-hop relay UE. For example, as shown in Figure 3, if relay UE1 determines that it does not belong to the first relay UE, it forwards the paging assistance information to relay UE2 (relay UE2 is the previous-hop relay of relay UE1); if relay UE2 determines that it does not belong to the first relay UE, it forwards the paging assistance information to relay UE3 (relay UE3 is the previous-hop relay of relay UE2).

[0109] It can be understood that the paging monitoring method provided in the embodiment of the present application is also applicable to a network connection scenario in which the backhaul link in a multi-hop relay network only contains one hop PC5 (that is, there is only one relay UE on the backhaul link). For the remote UE, its first relay UE, host relay UE and access relay UE are the same relay UE, and the signaling process of the paging monitoring method described in the present invention is run between the relay UE and the remote UE.

[0110] In the embodiment of the present application, the first relay UE is a relay UE within the network coverage area of ​​the serving base station and is any number of transmission hops away from the remote UE. That is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, and a relay UE with an established radio resource control (RRC) connection with the serving base station. Having the first relay UE monitor paging messages on behalf of the remote UE solves the problem of a relay UE without network coverage being unable to monitor paging messages on behalf of a remote UE, and the problem of a remote UE without network coverage being unable to monitor its own paging messages.

[0111] In a specific embodiment, the first relay UE includes at least one of the following:

[0112] Item A-1: ​​a host relay UE, wherein the host relay UE is a relay UE that is directly connected to the serving base station, or a relay UE that is capable of establishing a direct connection with the serving base station;

[0113] Item A-2: A relay UE on the backhaul path between the serving base station and the remote UE that meets a paging message monitoring condition, wherein the paging message monitoring condition includes at least one of the following:

[0114] Item B-1: The relay UE enters the network coverage area of ​​the serving base station;

[0115] Item B-2: The relay UE is within the network coverage area of ​​the serving base station and is transformed from a non-host relay UE to a host relay UE;

[0116] Item B-3: The relay UE enters the radio resource control connection state RRC_CONNECTED state.

[0117] Specifically, for item A-1, a relay UE that is in a state of direct connection with a serving base station refers to a relay UE that establishes Uu link communication with the base station. A relay UE that has the conditions to establish a direct connection with a serving base station means that: the relay UE is within the network coverage area of ​​the serving base station, but is not currently connected to the serving base station. For example, the downstream of a host relay UE includes intermediate relay UEs and remote UEs. Since the remote UE has no business, the host relay UE disconnects from the serving base station in order to save energy. At this time, although the host relay UE is not connected to the serving base station, it has the conditions to establish a direct connection with the serving base station. For example, relay UE a and relay UE d in Figure 6 are both host relay UEs.

[0118] For item A-2, the relay UE on the backhaul path between the serving base station and the remote UE refers to: the intermediate relay UE between the remote UE and the host relay UE within the network coverage area of ​​the serving base station. As shown in Figure 6, relay UE c and relay UE b are relay UEs on the backhaul path between the serving base station and the remote UE1. If relay UE c and relay UE b have the conditions for monitoring paging messages, relay UE c and relay UE b can also serve as the first relay UE to monitor paging messages instead of the remote UE.

[0119] Regarding item B-1, the relay UE enters the network coverage area of ​​the serving base station. A relay UE within the network coverage area of ​​the serving base station can monitor paging messages on behalf of the remote UE. Therefore, when a relay UE enters the network coverage area of ​​the serving base station, it is qualified to monitor paging messages. As shown in Figure 6, if relay UE c enters the network coverage area of ​​the serving base station, relay UE c can monitor paging messages on behalf of the remote UE.

[0120] For item B-2, the relay UE is within the network coverage area of ​​the serving base station and is transformed from a non-host relay UE to a host relay UE. As shown in Figure 6, if relay UE b disconnects from relay UE a via PC5, UE b can connect directly to the serving base station. In this case, relay UE b becomes a host relay UE, monitoring paging messages on behalf of the remote UE.

[0121] Regarding item B-3, the relay UE enters the radio resource control connection state RRC_CONNECTED state, indicating that the relay UE can communicate with the serving base station. Therefore, after the relay UE enters the RRC_CONNECTED state, it can monitor the paging message on behalf of the remote UE.

[0122] In a specific implementation, the relay UE on the backhaul path between the serving base station and the remote UE that meets the paging message monitoring condition includes at least one of the following:

[0123] An access relay UE, wherein the access relay UE is a relay UE that is directly wirelessly connected to the remote UE;

[0124] Intermediate relay UE, the intermediate relay UE is: a relay UE between the access UE and the host relay UE.

[0125] As shown in Figure 6, relay UE c is directly wirelessly connected to remote UE1, and relay UE e is directly wirelessly connected to remote UE2. Therefore, relay UE e and relay UE e are both access relay UEs. Relay UE b, which is between relay UE e (access relay UE) and relay UE a (host relay UE), is an intermediate relay UE.

[0126] In a specific implementation, the paging assistance information includes at least one of the following:

[0127] Item H-1: the paging identifier of the remote UE;

[0128] Item H-2: Terminal 5G identification ng-5G-S-TMSI;

[0129] H-3: Inactive state - Radio Network Temporary Identifier fullI-RNTI;

[0130] Item H-4: Discontinuous reception (DRX) configuration for monitoring paging messages;

[0131] Item H-5: The number of transmission hops between the remote UE and the first relay UE.

[0132] In an embodiment of the present application, when the remote UE is about to enter the RRC_IDLE state, the ng-5G-S-TMSI and the DRX configuration for monitoring paging messages are sent as paging assistance information to the first relay UE, so that the first relay UE monitors the paging message instead of the remote UE. When the remote UE is about to enter the RRC_INACTIVE state, the ng-5G-S-TMSI, fullI-RNTI and the DRX configuration for monitoring paging messages are sent as paging assistance information to the first relay UE, so that the first relay UE monitors the paging message instead of the remote UE.

[0133] In a specific implementation, the paging assistance information is sent by the remote UE, and the remote UE sends the paging assistance information, including at least one of the following:

[0134] Item C-1: The remote UE sends paging assistance information to the first relay UE through the PC5 RRC connection between the remote UE and the first relay UE;

[0135] Item C-2: The remote UE sends the paging assistance information to the first parent UE through a PC5 RRC connection with the first parent UE, so that the paging assistance information is sent hop by hop to the first relay UE through the first parent UE, where the first parent UE is the previous-hop relay UE of the remote UE.

[0136] Item C-3: The remote UE sends paging assistance information to the serving base station, so that the serving base station sends the paging assistance information to the first relay UE.

[0137] In the embodiment of the present application, in the paging assistance signal sending method of item C-1, the remote UE establishes a PC5 RRC connection with the first relay through a discovery process, and then sends the paging assistance information to the first relay UE through the PC5 RRC connection.

[0138] In the paging assistance signal transmission method of item C-2, the remote UE only needs to know that it can access the relay UE. The remote UE first sends paging assistance information to its access relay UE, which then forwards the paging message to its parent relay UE. The parent relay UE then forwards the paging message upward until it reaches the first relay UE. As shown in Figure 6, remote UE1 first sends paging assistance information to relay UE e (relay UE e is the access relay UE of remote UE1). Relay UE e then forwards the paging message to relay UE b (relay UE b is relay UE e's parent relay UE), which then forwards the paging message to relay UE a (relay UE a is the first relay UE).

[0139] In the paging assistance signal sending method of item C-3, when there is an RRC connection between the remote UE and the serving base station, the paging assistance signal is sent to the serving base station, and the serving base station sends the paging assistance signal to the first relay UE, so that the first relay UE monitors the paging message instead of the remote UE based on the paging assistance information.

[0140] In a specific implementation, when the relay UE determines that it belongs to the first relay UE and the paging message monitored by the relay UE includes the identifier of the remote UE, the relay UE monitors the paging message on behalf of the remote UE and forwards the monitored paging message to the remote UE. Specifically, the relay UE forwards the monitored paging message to the remote UE in at least one of the following ways:

[0141] Item D-1: the relay UE forwards the monitored paging message to the remote UE via the PC5 RRC connection between the relay UE and the remote UE;

[0142] Item D-2: The relay UE forwards the monitored paging message to the first sub-UE through the PC5 RRC connection between the relay UE and the first sub-UE, so that the paging message monitored by the relay UE is forwarded to the remote UE hop by hop through the first sub-UE, and the first sub-UE is the next-hop relay UE of the relay UE.

[0143] In the embodiment of the present application, the relay UE can determine the remote UE receiving the paging message based on the identifier of the remote UE included in the paging message, and forward the paging message to the corresponding remote UE. Specifically, the paging message forwarding method of item D-1 corresponds to the above item C-1. If the paging assistance information is forwarded via the PC5 RRC connection between the remote UE and the relay UE, the relay UE will also forward the paging message to the remote UE based on the PC5 RRC connection between the relay UE and the remote UE. The paging message can be carried by a container in the PC5 RRC message.

[0144] The paging message forwarding method of item D-2 corresponds to item C-2 above. If the paging assistance information is forwarded upward step by step through the PC5RRC of each hop until the paging assistance information of the remote UE reaches the first relay UE, then the first relay UE will forward the monitored paging message to the remote UE hop by hop through the PC5 RRC connection according to the same forwarding path.

[0145] In specific implementation, when the remote UE sends paging assistance information through the paging assistance signal sending method of item C-3 above, the first relay UE can forward the paging message to the remote UE based on any one of the methods in items D-1 and D-2 above after monitoring the paging message.

[0146] Correspondingly, the remote UE receives the paging message forwarded by the first relay UE in at least one of the following ways:

[0147] Item E-1: The remote UE receives a paging message forwarded by the first relay UE, where the paging message is transmitted through a PC5 RRC connection between the first relay UE and the remote UE;

[0148] Item E-2: The remote UE receives a paging message forwarded by the previous-hop relay UE of the remote UE, where the paging message is transmitted hop by hop through each hop PC5 RRC connection between the remote UE and the first relay UE.

[0149] In the embodiment of the present application, the way in which the remote UE receives the paging message through item E-1 corresponds to the forwarding way of the paging message of item D-1, and the way in which the remote UE receives the paging message through item E-2 corresponds to the forwarding way of the paging message of item D-2.

[0150] In a specific implementation, in order to forward the paging message to the remote UE, the first relay UE performs the following steps:

[0151] When a first relay UE receives paging assistance information from a remote UE sent by a first sub-UE, the first relay UE records a correspondence between an identifier of the remote UE and an identifier of the first sub-UE, where the first sub-UE is a next-hop relay UE of the first relay UE; the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0152] The first relay UE forwards the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

[0153] In this embodiment of the present application, when the first relay UE receives paging assistance information through a sub-UE, it records the correspondence between the remote UE's paging identifier and the sub-UE's identifier. Subsequently, when forwarding a paging message corresponding to the remote UE, the first relay UE forwards the paging message to the corresponding sub-UE according to the recorded correspondence. After the sub-UE receives the paging message, the sub-UE executes the following steps performed by the second relay UE, thereby implementing paging message forwarding based on precise routing.

[0154] Correspondingly, in order to forward the paging message to the remote UE, the second relay UE performs the following steps:

[0155] When the second relay UE receives the paging assistance information sent by the second sub-UE from the remote UE, the correspondence between the identifier of the remote UE and the identifier of the second sub-UE is recorded, where the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is the relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is any number of transmission hops away from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0156] The second relay UE forwards the received paging message to the second sub-UE according to the corresponding relationship.

[0157] In this embodiment of the present application, the second relay UE can be an access relay UE or an intermediate relay UE. When receiving paging assistance information through a sub-UE, the second relay UE records the correspondence between the remote UE's paging identifier and the sub-UE's identifier. When forwarding a paging message corresponding to the remote UE, the second relay UE forwards the paging message to the corresponding sub-UE according to the recorded correspondence, thereby implementing paging message forwarding based on precise routing.

[0158] As shown in Figure 3, relay UE3 is the first relay UE, and relay UE1 and relay UE2 are the second relay UEs. If the remote UE sends paging assistance information to relay UE3 through relay UE1 and relay UE2 in sequence, relay UE1 records the correspondence between the paging identifier of the remote UE and the identifier of its child UE (remote UE), relay UE2 records the correspondence between the paging identifier of the remote UE and the identifier of its child UE (relay UE1), and relay UE3 records the correspondence between the paging identifier of the remote UE and the identifier of its child UE (relay UE3). Then, when forwarding a paging message, relay UE3 forwards the paging message to relay UE2 according to the correspondence, relay UE2 forwards the paging message to relay UE1 according to the correspondence, and relay UE1 forwards the paging message to the remote UE according to the correspondence.

[0159] In a specific implementation, in order to forward the paging message to the remote UE, the first relay UE performs the following steps:

[0160] In the case that the paging message monitored by the first relay UE contains the identifier of the first downstream UE of the first relay UE, the first relay UE forwards the paging message monitored by the first relay UE to at least one next-hop relay UE of the first relay UE, and the first downstream UE of the first relay UE includes: a UE that accesses the service base station through the first relay UE.

[0161] Correspondingly, in order to forward the paging message to the remote UE, the second relay UE performs the following steps:

[0162] In the case that the paging message received by the second relay UE contains the identifier of the first downstream UE of the second relay UE, the second relay UE forwards the received paging message to at least one next-hop relay UE of the second relay UE, and the first downstream UE of the second relay UE includes: the UE that accesses the service base station through the second relay UE.

[0163] In an embodiment of the present application, after the first relay UE monitors a paging signal containing the identifier of any downstream UE, it directly forwards the paging message to all next-hop relay UEs (i.e., the second relay UE). When the second relay UE determines that the paging message contains the identifier of any downstream UE, it forwards the paging message to all next-hop relay UEs of the second relay UE until the paging message is forwarded to the corresponding remote UE, thereby realizing a broadcast-based paging message forwarding. In a specific implementation, when the second relay UE receives a paging message forwarded by other relay UEs, when it determines that the paging message contains the identifier of other UEs in addition to the identifier of the second relay UE, the second relay UE forwards the received paging message to all next-hop relay UEs of the second relay UE.

[0164] In a specific implementation, using a relay UE that enters the RRC_CONNECTED state to replace a downstream relay UE to monitor a paging message specifically includes:

[0165] After entering the RRC_CONNECTED state, the first relay UE reports the identifier of at least one downstream UE of the first relay UE to the serving base station, where the at least one downstream UE of the first relay UE includes: at least one UE accessing the serving base station through the first relay UE.

[0166] In a specific implementation, if the first relay UE is in the RRC_CONNECTED state and the bandwidth part (BWP) in which it is located is configured with a paging search space, the paging monitoring time-frequency window for the remote UE's paging message is determined according to the paging auxiliary information, so as to perform paging message monitoring on behalf of the remote UE. When the first relay UE is in the RRC_CONNECTED state, if the BWP in which it is located is configured with a paging search space, it can perform paging message monitoring through dedicated RRC signaling.

[0167] In the embodiment of the present application, the first relay UE can be a host relay UE, an access relay UE, or an intermediate relay UE. After the first relay UE enters the RRC_CONNECTED state, the first relay UE has the paging message monitoring conditions and can monitor the paging message on behalf of the downstream UE. Specifically, the first relay UE reports the identifiers of all downstream UEs of the first relay UE to the serving base station, thereby receiving the paging message from the serving base station and forwarding the paging message containing the paging identifier of the downstream UE to the downstream UE.

[0168] Furthermore, the first relay UE further performs the following steps:

[0169] The first relay UE receives first indication information sent by the serving base station, where the first indication information is used to instruct the first relay UE to report an identifier of at least one downstream UE of the first relay UE to the serving base station.

[0170] In an embodiment of the present application, the serving base station sends a first indication message to the first relay UE, so that the first relay UE reports the identifiers of all downstream UEs of the first relay UE, instead of the downstream relay UEs monitoring the paging message. In one embodiment, the first relay UE may report the identifiers of all downstream UEs of the first relay UE to the serving base station after entering the RRC_CONNECTED state.

[0171] In a specific implementation manner, in order to monitor the paging message on behalf of the downstream relay UE, at least one of the following is further included:

[0172] Item F-1: When a parent UE of the second relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the parent UE after the switch, where the parent UE of the second relay UE is the previous-hop relay UE of the second relay UE;

[0173] Item F-2: When the host relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to a target host relay UE after the switch;

[0174] Item F-3: When the second relay UE switches from the host relay UE to the target host relay UE, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the target host relay UE.

[0175] In an embodiment of the present application, the second relay UE can be an access relay UE or an intermediate relay UE. Specifically, for item F-1, when the parent UE of the second relay UE is switched, the switched parent UE is used to replace the downstream UE to monitor the paging message, and the paging message is forwarded to the downstream relay UE. For item F-2, when the host relay UE is switched, the identifiers of all downstream UEs of the second relay UE are sent to the switched target host relay UE, so that the switched target host relay UE replaces the downstream UE to monitor the paging message, and forwards the paging message to the downstream relay UE. For item F-3, when the second relay UE switches to be connected with the target host relay UE, the target host relay UE is used to replace the downstream UE to monitor the paging message, and forwards the paging message to the downstream relay UE.

[0176] In a specific implementation, to monitor a paging message, the serving base station performs the following steps:

[0177] Step J1: The serving base station receives paging assistance information from a remote UE forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​the serving base station of the remote UE and at any number of transmission hops from the remote UE, and the downstream UEs of the first relay UE include at least the remote UE accessing the serving base station through the first relay UE;

[0178] Step J2: The serving base station sends the received paging message containing the identifier of any downstream UE of the first relay UE to the first relay UE.

[0179] In an embodiment of the present application, the first relay UE sends paging assistance information from a remote UE to a serving base station. After receiving the paging message from the core network device, the serving base station sends the paging message to the first relay UE based on the identifier of any downstream UE of the first relay UE contained in the paging message, so that the first relay UE forwards the received paging message to any downstream UE of the first relay UE (including but not limited to the remote UE served by the first relay UE) to implement paging message monitoring. In one embodiment, when the first relay UE is in the RRC_CONNECTED state, the paging assistance information from the remote UE is sent to the serving base station.

[0180] In a specific implementation manner, the remote UE further performs the following steps:

[0181] The remote UE sends a paging assistance information release request to the first relay UE, where the paging assistance information release request is used to request the first relay UE to perform at least one of the following:

[0182] K-1 item: releasing the paging assistance information of the remote UE;

[0183] Item K-2: Stop monitoring paging messages for the remote UE.

[0184] In an embodiment of the present application, when the remote UE does not need the first relay UE to monitor paging messages on its behalf, a release request for paging assistance information can be sent to the first relay UE. The first relay UE performs at least one of the following based on the release request: releasing the paging assistance information of the remote UE, and no longer monitoring paging messages for the remote UE.

[0185] In one embodiment, since the first relay UE records the correspondence between the paging identifier of the remote UE and the identifier of the first sub-UE of the first relay UE, when the first relay UE receives a release request for paging auxiliary information of any remote UE, the correspondence between the paging identifier of the remote UE and the identifier of the sub-first UE is released. Similarly, the second relay UE between the first relay UE and the remote UE records the correspondence between the paging identifier of the remote UE and the identifier of the second sub-UE of the second relay UE. Therefore, when the second relay UE receives a release request for paging auxiliary information of any remote UE, the correspondence between the paging identifier of the remote UE and the identifier of the second sub-UE is released.

[0186] In a second aspect, a paging monitoring method is provided. The method is applied to a first relay terminal. FIG7 is a flowchart of a paging monitoring method provided in an embodiment of the present application. The method includes at least the following steps:

[0187] Step S710: When the first relay UE receives paging assistance information from a remote UE sent by a first sub-UE, the corresponding relationship between the identifier of the remote UE and the identifier of the first sub-UE is recorded, where the first sub-UE is the next-hop relay UE of the first relay UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0188] Step S720: The first relay UE forwards the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

[0189] Through the above steps, the relay UE receives the paging assistance information, and the relay UE determines whether it belongs to the first relay UE. When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or, when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the service base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE that has a radio resource control RRC connection with the service base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message.

[0190] In a specific embodiment, it also includes:

[0191] After entering the RRC_CONNECTED state, the first relay UE reports the identifier of at least one downstream UE of the first relay UE to the serving base station, where the at least one downstream UE of the first relay UE includes: at least one UE accessing the serving base station through the first relay UE.

[0192] In a specific embodiment, it also includes:

[0193] The first relay UE receives first indication information sent by the serving base station, where the first indication information is used to instruct the first relay UE to report an identifier of at least one downstream UE of the first relay UE to the serving base station.

[0194] In a specific embodiment, it also includes:

[0195] The first relay UE receives a release request for the paging assistance information sent by the remote UE, where the release request for the paging assistance information is used to request the first relay UE to perform at least one of the following:

[0196] releasing the paging assistance information of the remote UE;

[0197] Stop monitoring paging messages for the remote UE.

[0198] In a specific implementation, the paging assistance information includes at least one of the following:

[0199] The paging identifier of the remote UE;

[0200] Terminal 5G identifier ng-5G-S-TMSI;

[0201] Inactive state - Radio Network Temporary Identity fullI-RNTI;

[0202] Discontinuous reception (DRX) configuration for monitoring paging messages;

[0203] The number of transmission hops between the remote UE and the first relay UE.

[0204] The paging monitoring method provided in the embodiment of the present application can implement the various processes implemented in the embodiment of the second aspect and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0205] In a third aspect, a paging monitoring method is provided. The method is applied to a second relay terminal. FIG8 is a flowchart of a paging monitoring method provided in an embodiment of the present application. The method includes at least the following steps:

[0206] Step S810: When the second relay UE receives the paging assistance information sent by the second sub-UE from the remote UE, the correspondence between the identifier of the remote UE and the identifier of the second sub-UE is recorded, where the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is the relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0207] Step S820: The second relay UE forwards the received paging message to the second sub-UE according to the corresponding relationship.

[0208] Through the above steps, the relay UE receives the paging assistance information, and the relay UE determines whether it belongs to the first relay UE. When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or, when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the service base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE that has a radio resource control RRC connection with the service base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message.

[0209] In a specific embodiment, it also includes:

[0210] In the case that the paging message received by the second relay UE contains the identifier of the first downstream UE of the second relay UE, the second relay UE forwards the received paging message to at least one next-hop relay UE of the second relay UE, and the first downstream UE of the second relay UE includes: the UE that accesses the service base station through the second relay UE.

[0211] In a specific embodiment, it further comprises at least one of the following:

[0212] In the case where a parent UE of the second relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the switched parent UE, where the parent UE of the second relay UE is the previous hop relay UE of the second relay UE;

[0213] In the case where the host relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to a target host relay UE after the switch;

[0214] In a case where the second relay UE is switched from the host relay UE to a target host relay UE, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the target host relay UE.

[0215] The paging monitoring method provided in the embodiment of the present application can implement the various processes implemented in the embodiment of the third aspect and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0216] In a fourth aspect, a paging monitoring method is provided. The method is applied to a remote terminal. FIG9 is a flowchart of a paging monitoring method provided in an embodiment of the present application. The method includes at least the following steps:

[0217] Step S910: The remote UE sends paging assistance information;

[0218] Step S920: The remote UE receives a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE.

[0219] Through the above steps, the relay UE receives the paging assistance information, and the relay UE determines whether it belongs to the first relay UE. When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or, when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the service base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE that has a radio resource control RRC connection with the service base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message.

[0220] In a specific embodiment, the first relay UE includes at least one of the following:

[0221] A host relay UE, wherein the host relay UE is: a relay UE in a state of being directly connected to the serving base station, or a relay UE capable of being directly connected to the serving base station;

[0222] A relay UE on a backhaul path between the serving base station and the remote UE that meets a paging message monitoring condition, wherein the paging message monitoring condition includes at least one of the following:

[0223] The relay UE enters the network coverage area of ​​the serving base station;

[0224] The relay UE is within the network coverage area of ​​the serving base station and is transformed from a non-host relay UE to a host relay UE;

[0225] The relay UE enters the radio resource control connection state RRC_CONNECTED state.

[0226] In a specific implementation, the relay UE on the backhaul path between the serving base station and the remote UE that meets the paging message monitoring condition includes at least one of the following:

[0227] An access relay UE, wherein the access relay UE is a relay UE that is directly wirelessly connected to the remote UE;

[0228] Intermediate relay UE, the intermediate relay UE is: a relay UE between the access UE and the host relay UE.

[0229] In a specific implementation, the remote UE sends the paging assistance information, including at least one of the following:

[0230] The remote UE sends paging assistance information to the first relay UE through the PC5 RRC connection between the remote UE and the first relay UE;

[0231] The remote UE sends the paging assistance information to the first parent UE through a PC5 RRC connection with the first parent UE, so that the paging assistance information is sent hop by hop to the first relay UE through the first parent UE, where the first parent UE is the previous hop relay UE of the remote UE;

[0232] The remote UE sends paging assistance information to the serving base station, so that the serving base station sends the paging assistance information to the first relay UE.

[0233] In a specific implementation, the method further includes: the remote UE receiving the paging message forwarded by the first relay UE in at least one of the following ways:

[0234] The remote UE receives a paging message forwarded by the first relay UE, where the paging message is transmitted through a PC5 RRC connection between the first relay UE and the remote UE;

[0235] The remote UE receives a paging message forwarded by a previous-hop relay UE of the remote UE, where the paging message is transmitted hop by hop through each hop PC5 RRC connection between the remote UE and the first relay UE.

[0236] In a specific implementation, the paging assistance information includes at least one of the following:

[0237] The paging identifier of the remote UE;

[0238] Terminal 5G identifier ng-5G-S-TMSI;

[0239] Inactive state - Radio Network Temporary Identity fullI-RNTI;

[0240] Discontinuous reception (DRX) configuration for monitoring paging messages;

[0241] The number of transmission hops between the remote UE and the first relay UE.

[0242] In a specific embodiment, it also includes:

[0243] The remote UE sends a paging assistance information release request to the first relay UE, where the paging assistance information release request is used to request the first relay UE to perform at least one of the following:

[0244] releasing the paging assistance information of the remote UE;

[0245] Stop monitoring paging messages for the remote UE.

[0246] The paging monitoring method provided in the embodiment of the present application can implement the various processes implemented in the embodiment of the fourth aspect and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0247] In a fifth aspect, a paging monitoring method is provided. The method is applied to a serving base station. Referring to FIG10 , which is a flowchart of a paging monitoring method provided in an embodiment of the present application, the method includes at least the following steps:

[0248] Step S1010: The serving base station receives paging assistance information from a remote UE forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​the serving base station of the remote UE and at any number of transmission hops from the remote UE, and the downstream UEs of the first relay UE include at least the remote UE accessing the serving base station through the first relay UE;

[0249] Step S1020: the serving base station sends the received paging message including the identifier of any downstream UE of the first relay UE to the first relay UE.

[0250] In an embodiment of the present application, the first relay UE sends paging assistance information from the remote UE to the serving base station. After receiving the paging assistance information, the serving base station can know the downstream UE of the first relay UE based on the paging assistance information. When the serving base station receives a paging message based on the remote UE from the core network device, it can send the paging message to the corresponding first relay UE according to the paging identifier in the paging message, so that the first relay UE forwards the received paging message to the remote UE to realize paging monitoring. In one embodiment, when the first relay UE is in the RRC_CONNECTED state, the paging assistance information from the remote UE is sent to the serving base station.

[0251] The first relay UE includes at least one of the following: a relay UE within the network coverage area, or a relay UE with an established radio resource control (RRC) connection to a serving base station. Having the first relay UE monitor paging messages on behalf of a remote UE solves the problem of a relay UE without network coverage being unable to monitor paging messages on behalf of a remote UE, and the problem of a remote UE without network coverage being unable to monitor its own paging messages.

[0252] In a specific implementation, the paging assistance information includes at least one of the following:

[0253] The paging identifier of the remote UE;

[0254] Terminal 5G identifier ng-5G-S-TMSI;

[0255] Inactive state - Radio Network Temporary Identity fullI-RNTI;

[0256] Discontinuous reception (DRX) configuration for monitoring paging messages;

[0257] The number of transmission hops between the remote UE and the first relay UE.

[0258] The paging monitoring method provided in the embodiment of the present application can implement the various processes implemented in the embodiment of the fifth aspect and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0259] In a sixth aspect, a paging monitoring method is provided, which is applied to a serving base station. Referring to FIG11 , which is a flowchart of a paging monitoring method provided in an embodiment of the present application, the method includes at least the following steps:

[0260] Step S1110: The serving base station receives the paging assistance information sent by the remote UE;

[0261] Step S1120: The serving base station sends the paging assistance information to a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is within any transmission hop distance from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0262] Through the above steps, the relay UE receives the paging assistance information, and the relay UE determines whether it belongs to the first relay UE. When the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or, when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE. The first relay UE is a relay UE within the network coverage area of ​​the remote UE's service base station and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE. The first relay UE is a relay UE within the network coverage area of ​​the service base station and is any number of transmission hops away from the remote UE, that is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, a relay UE that has a radio resource control RRC connection with the service base station. The first relay UE monitors the paging message for the remote UE, solving the problem that the relay UE in a state without network signal coverage cannot monitor the paging message for the remote UE and the problem that the remote UE in a state without network signal coverage cannot monitor its own paging message.

[0263] In a specific implementation, the paging assistance information includes at least one of the following:

[0264] The paging identifier of the remote UE;

[0265] Terminal 5G identifier ng-5G-S-TMSI;

[0266] Inactive state - Radio Network Temporary Identity fullI-RNTI;

[0267] Discontinuous reception (DRX) configuration for monitoring paging messages;

[0268] The number of transmission hops between the remote UE and the first relay UE.

[0269] The paging monitoring method provided in the embodiment of the present application can implement the various processes implemented in the embodiment of the sixth aspect and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0270] In a seventh aspect, a paging monitoring device is provided, which is applied to a relay UE. As shown in FIG12 , the paging monitoring device 1200 includes:

[0271] A first receiving module 1210 is configured to receive paging assistance information;

[0272] A first determining module 1220 is configured to determine whether the first relay UE is a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0273] The first auxiliary monitoring module is used to monitor the paging message when it is determined that it belongs to the first relay UE, and forward the monitored paging message to the remote UE; or to forward the paging assistance information to the previous hop relay UE of the relay UE when it is determined that it does not belong to the first relay UE.

[0274] In a specific embodiment, the first auxiliary monitoring module includes at least one of the following:

[0275] a first auxiliary monitoring submodule, configured to forward the paging message monitored by the first relay UE to the remote UE through a PC5 RRC connection with the remote UE;

[0276] The second auxiliary monitoring submodule is used to forward the paging message monitored by the first relay UE to the first sub-UE through the PC5 RRC connection between the first sub-UE, so as to forward the paging message monitored by the first relay UE to the remote UE hop by hop through the first sub-UE, and the first sub-UE is the next-hop relay UE of the first relay UE.

[0277] The paging monitoring device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0278] The paging monitoring device provided in the embodiment of the present application can implement each process implemented in the corresponding paging monitoring method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0279] In an eighth aspect, a paging monitoring device is provided. The device is applied to a first relay terminal. As shown in FIG13 , the paging monitoring device 1300 includes:

[0280] A first recording module 1310 is configured to, when a first relay UE receives paging assistance information from a remote UE sent by a first sub-UE, record a correspondence between an identifier of the remote UE and an identifier of the first sub-UE, where the first sub-UE is a next-hop relay UE of the first relay UE; the first relay UE is a relay UE within the network coverage area of ​​a serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0281] The first forwarding module 1320 is configured to forward the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

[0282] In a specific embodiment, it also includes:

[0283] The second forwarding module is used to forward the paging message monitored by the first relay UE to at least one next-hop relay UE of the first relay UE when the paging message monitored by the first relay UE contains the identifier of the first downstream UE of the first relay UE. The first downstream UE of the first relay UE includes: a UE that accesses the service base station through the first relay UE.

[0284] In a specific embodiment, it also includes:

[0285] A reporting module is used to report the identifier of at least one downstream UE of the first relay UE to the serving base station after the first relay UE enters the RRC_CONNECTED state. The at least one downstream UE of the first relay UE includes: at least one UE that accesses the serving base station through the first relay UE.

[0286] The paging monitoring device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0287] The paging monitoring device provided in the embodiment of the present application can implement each process implemented in the corresponding paging monitoring method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0288] In a ninth aspect, a paging monitoring device is provided. The device is applied to a first relay terminal. As shown in FIG14 , the paging monitoring device 1400 includes:

[0289] The second recording module 1410 is configured to record, when the second relay UE receives paging assistance information from the remote UE sent by the second sub-UE, a correspondence between the identifier of the remote UE and the identifier of the second sub-UE, where the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is a relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE;

[0290] The third forwarding module 1420 is configured to forward the received paging message to the second sub-UE according to the corresponding relationship.

[0291] In a specific embodiment, it also includes:

[0292] The fourth forwarding module is used to forward the received paging message to at least one next-hop relay UE of the second relay UE when the paging message received by the second relay UE contains the identifier of the first downstream UE of the second relay UE. The first downstream UE of the second relay UE includes: a UE that accesses the service base station through the second relay UE.

[0293] In a specific embodiment, it further comprises at least one of the following:

[0294] A first sending module is configured to send an identifier of at least one downstream UE of the second relay UE to the parent UE after the handover when the parent UE of the second relay UE is handed over, where the parent UE of the second relay UE is the previous hop relay UE of the second relay UE;

[0295] A second sending module is configured to send an identifier of at least one downstream UE of the second relay UE to a target host relay UE after the handover when the host relay UE is switched;

[0296] The third sending module is configured to send an identifier of at least one downstream UE of the second relay UE to the target host relay UE when the second relay UE switches from the host relay UE to the target host relay UE.

[0297] In a tenth aspect, a paging monitoring device is provided, which is applied to a remote terminal. As shown in FIG15 , the paging monitoring device 1500 includes:

[0298] The third sending module 1510 is configured to send paging auxiliary information;

[0299] The second receiving module 1520 is used to receive a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and is at any transmission hop distance from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE.

[0300] In a specific embodiment, the third sending module includes at least one of the following:

[0301] A first sending submodule, configured to send paging assistance information to the first relay UE through a PC5 RRC connection with the first relay UE;

[0302] A second sending submodule, configured to send paging assistance information to the first parent UE through a PC5 RRC connection with the first parent UE, so as to send the paging assistance information hop by hop to the first relay UE through the first parent UE, where the first parent UE is the previous hop relay UE of the remote UE;

[0303] The third sending submodule is configured to send paging assistance information to the serving base station, so as to send the paging assistance information to the first relay UE through the serving base station.

[0304] In a specific embodiment, it also includes at least the following:

[0305] The third receiving module is configured to receive the paging message forwarded by the first relay UE:

[0306] a fourth receiving module, configured to receive a paging message forwarded by the first relay UE, where the paging message is transmitted through a PC5 RRC connection between the first relay UE and the remote UE;

[0307] The fifth receiving module is configured to receive a paging message forwarded by the previous-hop relay UE of the remote UE, where the paging message is transmitted hop by hop through each hop PC5 RRC connection between the remote UE and the first relay UE.

[0308] In an eleventh aspect, a paging monitoring device is provided, which is applied to a serving base station. As shown in FIG16 , the paging monitoring device 1600 includes:

[0309] A sixth receiving module 1610 is configured to receive paging assistance information from a remote UE forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any number of transmission hops from the remote UE, and the downstream UE of the first relay UE includes at least: the remote UE accessing the serving base station through the first relay UE;

[0310] The fourth sending module 1620 is configured to send the received paging message including the identifier of any downstream UE of the first relay UE to the first relay UE.

[0311] In a twelfth aspect, a paging monitoring device is provided, which is applied to a serving base station. As shown in FIG17 , the paging monitoring device 1700 includes:

[0312] The seventh receiving module 1710 is configured to receive paging assistance information sent by a remote UE;

[0313] The fifth sending module 1720 is used to send the paging assistance information to the first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the service base station of the remote UE and is within any transmission hop distance from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

[0314] The paging monitoring device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0315] The paging monitoring device provided in the embodiment of the present application can implement each process implemented in the corresponding paging monitoring method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0316] As shown in Figure 18, an embodiment of the present application further provides a communication device 1800, including a processor 1801 and a memory 1802. The memory 1802 stores a program or instruction that can be run on the processor 1801. For example, when the communication device 1800 is a terminal, the program or instruction, when executed by the processor 1801, implements the various steps of the above-mentioned paging monitoring method embodiment and can achieve the same technical effect. When the communication device 1800 is a network-side device, the program or instruction, when executed by the processor 1801, implements the various steps of the above-mentioned paging monitoring method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0317] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown above on the terminal side. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 19 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0318] The terminal 1900 includes but is not limited to: a radio frequency unit 1901, a network module 1902, an audio output unit 1903, an input unit 1904, a sensor 1905, a display unit 1906, a user input unit 1907, an interface unit 1908, a memory 1909 and at least some of the components of the processor 1910.

[0319] Those skilled in the art will appreciate that the terminal 1900 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1910 via a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG19 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0320] It should be understood that in an embodiment of the present application, the input unit 1904 may include a graphics processor 19041 and a microphone 19042, and the graphics processor 19041 processes the image data of a still picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1906 may include a display panel 19061, and the display panel 19061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1907 includes a touch panel 19071 and at least one of the other input devices 19072. The touch panel 19071 is also called a touch screen. The touch panel 19071 may include two parts: a touch detection device and a touch controller. Other input devices 19072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0321] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1901 may transmit the data to the processor 1910 for processing. Furthermore, the RF unit 1901 may send uplink data to the network-side device. Typically, the RF unit 1901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0322] Memory 1909 can be used to store software programs or instructions and various data. Memory 1909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, memory 1909 may include volatile memory or non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0323] Processor 1910 may include one or more processing units. Optionally, processor 1910 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1910.

[0324] Among them, the radio frequency unit 1901 is used for the relay UE to receive paging assistance information; the relay UE determines whether it belongs to the first relay UE, and the paging assistance information is used to assist the first relay UE to monitor the paging message for the remote UE; when the relay UE determines that it belongs to the first relay UE, it monitors the paging message and forwards the monitored paging message to the remote UE; or when the relay UE determines that it does not belong to the first relay UE, it forwards the paging assistance information to the previous hop relay UE of the relay UE.

[0325] Processor 1910 is used for the relay UE to receive paging assistance information; the relay UE determines whether it belongs to the first relay UE, and the paging assistance information is used to assist the first relay UE to monitor paging messages for the remote UE; when the relay UE determines that it belongs to the first relay UE, the relay UE monitors the paging message and forwards the monitored paging message to the remote UE; or when the relay UE determines that it does not belong to the first relay UE, the relay UE forwards the paging assistance information to the previous-hop relay UE of the relay UE.

[0326] In the embodiment of the present application, the first relay UE is a relay UE within the network coverage area of ​​the serving base station and is any number of transmission hops away from the remote UE. That is, the first relay UE includes at least one of the following: a relay UE within the network coverage area, and a relay UE with an established radio resource control (RRC) connection with the serving base station. Having the first relay UE monitor paging messages on behalf of the remote UE solves the problem of a relay UE without network coverage being unable to monitor paging messages on behalf of a remote UE, and the problem of a remote UE without network coverage being unable to monitor its own paging messages.

[0327] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the paging monitoring method in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0328] The present application also provides a serving base station embodiment, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown on the serving base station side. This serving base station embodiment corresponds to the aforementioned serving base station method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this serving base station embodiment and can achieve the same technical effects.

[0329] Specifically, the embodiment of the present application further provides a serving base station. As shown in FIG20 , the serving base station 2000 includes: a processor 2001, a network interface 2002, and a memory 2003. The network interface 2002 is, for example, a common public radio interface (CPRI).

[0330] Specifically, the service base station 2000 of an embodiment of the present invention also includes: instructions or programs stored in the memory 2003 and executable on the processor 1501. The processor 2001 calls the instructions or programs in the memory 2003 to execute the methods executed by the modules shown on the service base station side and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0331] An embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned paging monitoring method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0332] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0333] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned paging monitoring method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0334] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0335] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned paging monitoring method embodiment and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0336] An embodiment of the present application also provides a paging monitoring system, which includes: a remote terminal, a relay terminal and a service base station, wherein the remote terminal is used to execute the steps executed by the remote terminal in the above method embodiment, the relay terminal is used to execute the steps executed by the relay terminal, the first relay terminal, or the second relay terminal in the above method embodiment, and the service base station is used to execute the steps executed by the service base station in the above method embodiment.

[0337] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0338] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for causing a terminal or a serving base station to execute the methods described in each embodiment of the present application.

[0339] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A paging monitoring method, wherein: include: The relay UE receives the paging assistance information; The relay UE determines whether it belongs to a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring a paging message for the remote UE; When the relay UE determines that it belongs to the first relay UE, the relay UE monitors the paging message, and forwards the monitored paging message to the remote UE; or When the relay UE determines that it does not belong to the first relay UE, the relay UE forwards the paging assistance information to the previous hop relay UE of the relay UE.

2. The method according to claim 1, wherein: The first relay UE includes at least one of the following: A host relay UE, wherein the host relay UE is: a relay UE in a state of being directly connected to the serving base station, or a relay UE having conditions for establishing a direct connection with the serving base station; A relay UE on a backhaul path between the serving base station and the remote UE that has a paging message monitoring condition, wherein the paging message monitoring condition includes at least one of the following: The relay UE enters the network coverage area of ​​the serving base station; The relay UE is within the network coverage area of ​​the serving base station and is transformed from a non-host relay UE to a host relay UE; The relay UE enters the RRC_CONNECTED state.

3. The method according to claim 2, wherein: The relay UE on the backhaul path between the serving base station and the remote UE that has the paging message monitoring condition includes at least one of the following: An access relay UE, wherein the access relay UE is a relay UE directly wirelessly connected to the remote UE; Intermediate relay UE, the intermediate relay UE is: a relay UE between the access UE and the host relay UE.

4. The method according to any one of claims 1 to 3, wherein: When the relay UE determines that it belongs to the first relay UE and the paging message monitored by the relay UE includes the identifier of the remote UE, the relay UE forwards the monitored paging message to the remote UE in at least one of the following ways: The relay UE forwards the monitored paging message to the remote UE through the PC5 RRC connection between the relay UE and the remote UE; The relay UE forwards the monitored paging message to the first sub-UE through the PC5 RRC connection between the relay UE and the first sub-UE, so that the paging message monitored by the relay UE is forwarded to the remote UE hop by hop through the first sub-UE, and the first sub-UE is the next-hop relay UE of the relay UE.

5. The method according to any one of claims 1 to 4, wherein: The paging assistance information includes at least one of the following: The paging identifier of the remote UE; Terminal 5G identifier ng-5G-S-TMSI; Inactive state - Radio Network Temporary Identifier fullI-RNTI; Discontinuous reception (DRX) configuration for monitoring paging messages; The number of transmission hops between the remote UE and the first relay UE.

6. A paging monitoring method, wherein: include: In the case where the first relay UE receives the paging assistance information sent by the first sub-UE from the remote UE, the correspondence between the identifier of the remote UE and the identifier of the first sub-UE is recorded, where the first sub-UE is the next-hop relay UE of the first relay UE; the first relay UE is a relay UE within the network coverage area of ​​the service base station of the remote UE and at any transmission hop number from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE; The first relay UE forwards the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

7. The method according to claim 6, wherein: Also includes: In the case that the paging message monitored by the first relay UE contains the identifier of the first downstream UE of the first relay UE, the first relay UE forwards the paging message monitored by the first relay UE to at least one next-hop relay UE of the first relay UE, and the first downstream UE of the first relay UE includes: a UE that accesses the service base station through the first relay UE.

8. The method according to claim 6 or 7, wherein: Also includes: After entering the RRC_CONNECTED state, the first relay UE reports the identifier of at least one downstream UE of the first relay UE to the serving base station, where the at least one downstream UE of the first relay UE includes: at least one UE accessing the serving base station through the first relay UE.

9. The method according to claim 8, wherein: Also includes: The first relay UE receives first indication information sent by the serving base station, where the first indication information is used to instruct the first relay UE to report an identifier of at least one downstream UE of the first relay UE to the serving base station.

10. The method according to any one of claims 5 to 9, wherein: Also includes: The first relay UE receives a release request for paging assistance information sent by the remote UE, where the release request for paging assistance information is used to request the first relay UE to perform at least one of the following: releasing paging assistance information of the remote UE; Stop monitoring paging messages for the remote UE.

11. The method according to any one of claims 6 to 10, wherein: The paging assistance information includes at least one of the following: The paging identifier of the remote UE; Terminal 5G identifier ng-5G-S-TMSI; Inactive state - Radio Network Temporary Identifier fullI-RNTI; Discontinuous reception (DRX) configuration for monitoring paging messages; The number of transmission hops between the remote UE and the first relay UE.

12. A paging monitoring method, wherein: include: In the case where the second relay UE receives the paging assistance information sent by the second sub-UE from the remote UE, the correspondence between the identifier of the remote UE and the identifier of the second sub-UE is recorded, the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is the relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE with any number of transmission hops from the remote UE within the network coverage area of ​​the service base station of the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE; The second relay UE forwards the received paging message to the second sub-UE according to the corresponding relationship.

13. The method according to claim 12, wherein: Also includes: In the case that the paging message received by the second relay UE contains the identifier of the first downstream UE of the second relay UE, the second relay UE forwards the received paging message to at least one next-hop relay UE of the second relay UE, and the first downstream UE of the second relay UE includes: a UE that accesses the service base station through the second relay UE.

14. The method according to claim 12 or 13, wherein: Also includes at least one of the following: In the case where a parent UE of the second relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the switched parent UE, and the parent UE of the second relay UE is the previous hop relay UE of the second relay UE; In the case where the host relay UE is switched, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to a target host relay UE after the switch; In a case where the second relay UE switches from the host relay UE to a target host relay UE, the second relay UE sends an identifier of at least one downstream UE of the second relay UE to the target host relay UE.

15. A paging monitoring method, wherein: include: The remote UE sends paging assistance information; The remote UE receives a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a service base station of the remote UE and is any number of transmission hops away from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

16. The method according to claim 15, wherein: The first relay UE includes at least one of the following: A host relay UE, wherein the host relay UE is: a relay UE in a state of being directly connected to the serving base station, or a relay UE having conditions for being directly connected to the serving base station; A relay UE on a backhaul path between the serving base station and the remote UE that has a paging message monitoring condition, wherein the paging message monitoring condition includes at least one of the following: The relay UE enters the network coverage area of ​​the serving base station; The relay UE is within the network coverage area of ​​the serving base station and is transformed from a non-host relay UE to a host relay UE; The relay UE enters a radio resource control connected state RRC_CONNECTED state.

17. The method according to claim 16, wherein: The relay UE on the backhaul path between the serving base station and the remote UE that has the paging message monitoring condition includes at least one of the following: An access relay UE, wherein the access relay UE is a relay UE directly wirelessly connected to the remote UE; Intermediate relay UE, the intermediate relay UE is: a relay UE between the access UE and the host relay UE.

18. The method according to any one of claims 15 to 17, wherein: The remote UE sends paging assistance information, including at least one of the following: The remote UE sends paging assistance information to the first relay UE through the PC5 RRC connection between the remote UE and the first relay UE; The remote UE sends the paging assistance information to the first parent UE through the PC5 RRC connection between the remote UE and the first parent UE, so that the paging assistance information is sent hop by hop to the first relay UE through the first parent UE, and the first parent UE is the previous hop relay UE of the remote UE; The remote UE sends paging assistance information to the serving base station, so that the serving base station sends the paging assistance information to the first relay UE.

19. The method according to any one of claims 15 to 18, wherein: The method further includes: the remote UE receiving the paging message forwarded by the first relay UE in at least one of the following ways: The remote UE receives a paging message forwarded by the first relay UE, where the paging message is transmitted through a PC5 RRC connection between the first relay UE and the remote UE; The remote UE receives a paging message forwarded by a previous-hop relay UE of the remote UE, where the paging message is transmitted hop by hop through each hop PC5 RRC connection between the remote UE and the first relay UE.

20. The method according to any one of claims 15 to 19, wherein: The paging assistance information includes at least one of the following: The paging identifier of the remote UE; Terminal 5G identifier ng-5G-S-TMSI; Inactive state - Radio Network Temporary Identifier fullI-RNTI; Discontinuous reception (DRX) configuration for monitoring paging messages; The number of transmission hops between the remote UE and the first relay UE.

21. The method according to any one of claims 15 to 20, wherein: Also includes: The remote UE sends a release request for paging assistance information to the first relay UE, where the release request for paging assistance information is used to request the first relay UE to perform at least one of the following: releasing paging assistance information of the remote UE; Stop monitoring paging messages for the remote UE.

22. A paging monitoring method, wherein: include: The serving base station receives the paging assistance information from the remote UE forwarded by the first relay UE, wherein the first relay UE is a relay UE within the network coverage area of ​​the serving base station of the remote UE and with any number of transmission hops from the remote UE, and the downstream UE of the first relay UE at least includes: the remote UE accessing the serving base station through the first relay UE; The serving base station sends the received paging message including the identifier of any downstream UE of the first relay UE to the first relay UE.

23. The method according to claim 22, wherein: The paging assistance information includes at least one of the following: The paging identifier of the remote UE; Terminal 5G identifier ng-5G-S-TMSI; Inactive state - Radio Network Temporary Identifier fullI-RNTI; Discontinuous reception (DRX) configuration for monitoring paging messages; The number of transmission hops between the remote UE and the first relay UE.

24. A paging monitoring method, wherein: include: The serving base station receives the paging assistance information sent by the remote UE; The serving base station sends the paging assistance information to a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and within a distance of any transmission hops from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

25. The method according to claim 24, wherein: The paging assistance information includes at least one of the following: The paging identifier of the remote UE; Terminal 5G identifier ng-5G-S-TMSI; Inactive state - Radio Network Temporary Identifier fullI-RNTI; Discontinuous reception (DRX) configuration for monitoring paging messages; The number of transmission hops between the remote UE and the first relay UE.

26. A paging monitoring device, wherein: include: A first receiving module, used for receiving paging auxiliary information; A first determination module, used to determine whether it belongs to a first relay UE, where the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and with any number of transmission hops from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring a paging message for the remote UE; A first auxiliary monitoring module, configured to monitor a paging message when determining that the first relay UE belongs to the first relay UE, and forward the monitored paging message to the remote UE; Or it is used to forward the paging assistance information to the previous hop relay UE of the relay UE when it is determined that the relay UE itself does not belong to the first relay UE.

27. The device according to claim 26, wherein: The first auxiliary monitoring module includes at least one of the following: A first auxiliary monitoring submodule, configured to forward the paging message monitored by the first relay UE to the remote UE through a PC5 RRC connection with the remote UE; The second auxiliary monitoring submodule is used to forward the paging message monitored by the first relay UE to the first sub-UE through the PC5 RRC connection between the first sub-UE, so as to forward the paging message monitored by the first relay UE to the remote UE hop by hop through the first sub-UE, and the first sub-UE is the next-hop relay UE of the first relay UE.

28. A paging monitoring device, wherein: include: A first recording module is used to record the correspondence between the identifier of the remote UE and the identifier of the first sub-UE when the first relay UE receives the paging assistance information sent by the first sub-UE from the remote UE, where the first sub-UE is the next-hop relay UE of the first relay UE; the first relay UE is a relay UE with any transmission hops from the remote UE within the network coverage area of ​​the service base station of the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE; The first forwarding module is used to forward the paging message monitored by the first relay UE to the first sub-UE according to the corresponding relationship.

29. The paging monitoring device according to claim 28, wherein: Also includes: The second forwarding module is used for forwarding the paging message monitored by the first relay UE to at least one next-hop relay UE of the first relay UE when the paging message monitored by the first relay UE contains the identifier of the first downstream UE of the first relay UE. The first downstream UE of the first relay UE includes: a UE that accesses the service base station through the first relay UE.

30. The paging monitoring device according to claim 28 or 29, wherein: Also includes: A reporting module is used for reporting the identifier of at least one downstream UE of the first relay UE to the serving base station after the first relay UE enters the RRC_CONNECTED state, and the at least one downstream UE of the first relay UE includes: at least one UE accessing the serving base station through the first relay UE.

31. A paging monitoring device, wherein: include: A second recording module is used to record the correspondence between the identifier of the remote UE and the identifier of the second sub-UE when the second relay UE receives the paging assistance information sent by the second sub-UE from the remote UE, the second sub-UE is the next-hop relay UE of the second relay UE, and the second relay UE is the relay UE between the first relay UE and the remote UE; the first relay UE is a relay UE with any transmission hops from the remote UE within the network coverage area of ​​the service base station of the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring the paging message for the remote UE; The third forwarding module is used to forward the received paging message to the second sub-UE according to the corresponding relationship.

32. The paging monitoring device according to claim 31, wherein: Also includes: The fourth forwarding module is used for forwarding the received paging message to at least one next-hop relay UE of the second relay UE when the paging message received by the second relay UE contains the identifier of the first downstream UE of the second relay UE. The first downstream UE of the second relay UE includes: a UE that accesses the service base station through the second relay UE.

33. The paging monitoring device according to claim 31 or 32, wherein: Also includes at least one of the following: A first sending module, configured to send an identifier of at least one downstream UE of the second relay UE to a parent UE after the switching when a parent UE of the second relay UE is switched, wherein the parent UE of the second relay UE is a previous hop relay UE of the second relay UE; A second sending module, configured to send an identifier of at least one downstream UE of the second relay UE to a target host relay UE after the switching when the host relay UE is switched; The third sending module is used to send the identifier of at least one downstream UE of the second relay UE to the target host relay UE when the second relay UE switches from the host relay UE to the target host relay UE.

34. A paging monitoring device, wherein: include: A third sending module, used for sending paging auxiliary information; The second receiving module is used to receive a paging message forwarded by a first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​a service base station of the remote UE and is any number of transmission hops away from the remote UE, and the paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

35. The paging monitoring device according to claim 34, wherein: The third sending module includes at least one of the following: A first sending submodule, configured to send paging assistance information to the first relay UE through a PC5 RRC connection with the first relay UE; A second sending submodule, configured to send paging assistance information to the first parent UE through a PC5 RRC connection with the first parent UE, so as to send the paging assistance information hop by hop to the first relay UE through the first parent UE, where the first parent UE is a previous hop relay UE of the remote UE; The third sending submodule is configured to send paging assistance information to the serving base station, so as to send the paging assistance information to the first relay UE through the serving base station.

36. The paging monitoring device according to claim 34 or 35, wherein: Also includes at least the following: The third receiving module is used to receive the paging message forwarded by the first relay UE: a fourth receiving module, configured to receive a paging message forwarded by the first relay UE, where the paging message is transmitted through a PC5 RRC connection between the first relay UE and the remote UE; The fifth receiving module is used to receive a paging message forwarded by the previous-hop relay UE of the remote UE, where the paging message is transmitted hop by hop through each hop PC5 RRC connection between the remote UE and the first relay UE.

37. A paging monitoring device, wherein: include: a sixth receiving module, configured to receive paging assistance information from a remote UE forwarded by a first relay UE, wherein the first relay UE is a relay UE within a network coverage area of ​​a serving base station of the remote UE and at any transmission hop number from the remote UE, and the downstream UE of the first relay UE includes at least: the remote UE accessing the serving base station through the first relay UE; The fourth sending module is used to send the received paging message containing the identifier of any downstream UE of the first relay UE to the first relay UE.

38. A paging monitoring device, wherein: include: A seventh receiving module, configured to receive paging auxiliary information sent by a remote UE; The fifth sending module is used to send the paging assistance information to the first relay UE, where the first relay UE is a relay UE within the network coverage area of ​​the service base station of the remote UE and within a distance of any transmission hop number from the remote UE. The paging assistance information is used to assist the first relay UE in monitoring paging messages for the remote UE.

39. A relay terminal, wherein: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the method implements the steps of the paging monitoring method according to any one of claims 1 to 5, or implements the steps of the paging monitoring method according to any one of claims 6 to 11, or implements the steps of the paging monitoring method according to any one of claims 12 to 14.

40. A remote terminal, wherein: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the paging monitoring method as claimed in any one of claims 15 to 21 are implemented.

41. A serving base station, wherein: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the paging monitoring method as described in any one of claims 22 to 23, or implements the steps of the paging monitoring method as described in any one of claims 24 to 25.

42. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the paging monitoring method according to any one of claims 1 to 5, or implements the steps of the paging monitoring method according to any one of claims 6 to 11, or implements the steps of the paging monitoring method according to any one of claims 12 to 14, or implements the steps of the paging monitoring method according to any one of claims 15 to 21, or implements the steps of the paging monitoring method according to any one of claims 22 to 23, or implements the steps of the paging monitoring method according to any one of claims 24 to 25.

Images