WO2022267883A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

Info

Publication number
WO2022267883A1
WO2022267883A1 PCT/CN2022/097444 CN2022097444W WO2022267883A1 WO 2022267883 A1 WO2022267883 A1 WO 2022267883A1 CN 2022097444 W CN2022097444 W CN 2022097444W WO 2022267883 A1 WO2022267883 A1 WO 2022267883A1
Authority
WO
WIPO (PCT)
Prior art keywords
paging
terminal device
forwarding
indication information
information
Prior art date
Application number
PCT/CN2022/097444
Other languages
English (en)
Chinese (zh)
Inventor
才宇
徐海博
彭文杰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202110898616.5A external-priority patent/CN115529662A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2022267883A1 publication Critical patent/WO2022267883A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • a terminal device may also communicate with the network through other terminal devices.
  • a relay (relay) terminal device can act as a relay for a remote (remote) terminal device, so that the remote terminal device can communicate with the network through the relay terminal device.
  • the technology is called UE to Network relay (UE2NW relay) technology.
  • the remote terminal device can receive paging from the network through the relay terminal device. Specifically, in addition to monitoring the paging of the relay terminal device, the relay terminal device also monitors the paging for the remote terminal device, and sends the paging of the remote terminal device to the remote terminal device.
  • the relay terminal device In the case that the relay terminal device independently selects resources to forward paging to the remote terminal device, the relay terminal device cannot determine the packet delay budget of the sidelink resource between the relay terminal device and the remote terminal device (packet delay budget, PDB), therefore, the relay terminal device cannot determine the corresponding sidelink resource according to the PDB, and forward the paging, resulting in that the time delay for the paging to be forwarded cannot be guaranteed.
  • packet delay budget PDB
  • the embodiment of the present application provides a communication method and device, which are used to solve the problem in the prior art that the time delay of relay terminal equipment forwarding paging cannot be guaranteed.
  • the present application provides a communication method applied to a first terminal device, or a component in the first terminal device, such as a chip, where the first terminal device may be a relay terminal device.
  • the method includes: receiving a paging sent from the network device to the second terminal device; forwarding the paging to the second terminal device or determining sidelink resources according to the first information, the first information using Indicates at least one of the following: a packet delay budget for forwarding paging, a delay requirement for forwarding paging, or a priority for forwarding paging.
  • the relay terminal device can forward the paging to the remote terminal device through the PDB or delay requirement for forwarding paging in the first information, thereby ensuring The time delay for the paging of the remote terminal device to be forwarded meets the requirement of the upper limit of the delay, and the performance of forwarding the paging of the remote terminal device by the relay terminal device is improved.
  • the relay terminal device may determine the priority of forwarding paging through the first information, so that the relay terminal device may, according to the priority of forwarding paging, Forward the paging to the remote terminal equipment to ensure that the paging of the high-priority remote terminal equipment can be forwarded preferentially.
  • the first terminal device may also determine the sidelink resource according to the first information, and the sidelink resource helps to ensure the delay of the message sent to the second terminal, and improves the forwarding time of the message sent by the relay terminal device to the remote terminal. The capabilities of the device's messages.
  • the method further includes: receiving first indication information from the network device, where the first indication information is used to indicate the packet delay budget of the forwarded paging or the forwarded paging delay requirements.
  • the first terminal device can obtain the PDB or delay requirement for forwarding paging configured by the base station through the network device sending the first indication information, so that the first terminal device can It is required to forward the paging to the second terminal device, so as to ensure the time delay for the paging of the second terminal device to be forwarded.
  • the method further includes: receiving second indication information from the network device, where the second indication information is used to indicate the priority of forwarding the paging.
  • the first terminal device can obtain the paging forwarding priority configured by the base station through the network device sending the second indication information, so that the first terminal device can perform logical channel according to the paging forwarding priority.
  • the priority processing process ensures that the paging of high-priority remote terminal equipment can be forwarded preferentially.
  • the first indication information is carried in any of the following: system information block, radio resource control signaling;
  • the second indication information is carried in any of the following: system information block, radio resource control signaling.
  • the first information may be pre-configured, therefore, the first indication information may be in Sent in a system information block.
  • the first indication information or the second indication information may be in the system information block, sidelink pre-configuration or radio resource control carried in the signaling.
  • the first information when the first information is configured based on the first terminal device or the second terminal device, the first information may be determined when it is determined that the first terminal device provides relay services for the second terminal device, the first indication information or The second indication information may be carried in radio resource control signaling and sent.
  • the first information when the first information is based on each paging configuration, at this time, the first information may be determined when the network device determines to send a paging to the second terminal device, and the first indication information or the second indication information may be It is carried in the paging of the second terminal device, or the first indication information or the second indication information may be carried in radio resource control signaling and sent.
  • the first information can be flexibly configured, and correspondingly, the first indication information or the second indication information can also be flexibly configured.
  • the paging of the second terminal device includes: sixth indication information, where the sixth indication information is used to indicate a packet delay budget for forwarding paging or a delay requirement for forwarding paging ;
  • the paging of the second terminal device includes: seventh indication information, where the seventh indication information is used to indicate the priority of forwarding the paging.
  • the paging message can carry the indication information of the first information, so that the first terminal device can obtain the first information while receiving the paging sent from the network device to the second terminal device , making preparations for subsequently forwarding the paging to the second terminal device or determining sidelink resources according to the first information.
  • the priority of forwarding paging may also be determined according to the packet delay budget of forwarding paging or the delay requirement of forwarding paging.
  • the first terminal device can determine the priority of forwarding paging according to the packet delay budget of forwarding paging or the delay requirement of forwarding paging, and then, according to the priority of forwarding paging , forwarding the paging or determining sidelink resources to the second terminal device.
  • a packet delay budget for forwarding paging or a delay requirement for forwarding paging may also be determined according to the priority of forwarding paging.
  • the first terminal device can determine the packet delay budget for forwarding paging or the delay requirement for forwarding paging according to the priority of forwarding paging, and further, according to the paging forwarding packet time Forwarding the paging to the second terminal device or determining side link resources according to the delay budget or the delay requirement of forwarding the paging. Therefore, the first terminal device can flexibly determine a manner of forwarding the paging to the second terminal device or a manner of determining sidelink resources, thereby improving the flexibility of the performance of the first terminal device for forwarding the paging.
  • the remaining packet delay budget for forwarding paging is determined according to the packet delay budget for forwarding paging or the delay requirement for forwarding paging; according to the remaining packet time for forwarding paging forward the paging to the second terminal device.
  • the first terminal device can determine the remaining packet delay budget for forwarding paging based on the first information, and forward the paging to the second terminal device according to the delay corresponding to the remaining packet delay budget for forwarding paging , to ensure the delay of forwarding paging.
  • the remaining delay requirement for forwarding paging is determined according to the packet delay budget for forwarding paging or the delay requirement for forwarding paging; On demand, forward the paging to the second terminal device.
  • the first terminal device can determine the remaining delay requirement for forwarding paging based on the first information, and forward the paging to the second terminal device according to the delay corresponding to the remaining delay requirement for forwarding paging, so as to Guaranteed delay in forwarding paging.
  • the side link resource is a side link resource used for forwarding paging to the second terminal device.
  • the selected sidelink resource helps to ensure the time delay of forwarding the paging to the second terminal device, and improves the performance of the relay terminal device forwarding the paging of the remote terminal device.
  • a possible implementation manner is to determine the remaining packet delay budget of the forwarded paging according to the packet delay budget of the forwarded paging or the delay requirement of the forwarded paging; Packet delay budget, select sidelink resources.
  • the remaining packet delay budget for forwarding paging can be determined, and then the side link resources can be determined accordingly.
  • the link resource helps to ensure the time delay of the message sent to the second terminal, and improves the performance of the relay terminal device forwarding the message of the remote terminal device.
  • the second terminal device is at least one of the following: a remote terminal device, a remote terminal device supporting layer 2 relay, a terminal device supporting the capability of a remote terminal device, and a layer 2 relay supporting The terminal equipment with remote terminal equipment capability, and the terminal equipment that receives and forwards paging.
  • the network device can send the first indication information or the second indication information to the first terminal device, so that the first terminal device obtains the first information, and according to the first The information forwards the paging to the second terminal device, so that when the second terminal device is not a remote terminal device, that is, when the first terminal device does not need to forward the paging for the first terminal device, it may not receive the first indication information or the second terminal device.
  • Two indication information so as to save the signaling overhead and the overhead of receiving the first indication information or the second indication information by the first terminal device.
  • the paging of the second terminal device includes at least one of the following:
  • third indication information where the third indication information is used to indicate that the second terminal device is paged
  • Fourth indication information where the fourth indication information is used to instruct the first terminal device to forward paging to the second terminal device.
  • the network device can send a paging message or a paging indication to the second terminal device in various ways, so as to adapt to different scenarios.
  • the forwarding the paging to the second terminal device includes at least one of the following:
  • the first terminal device may also forward the received paging to the second terminal device, and may also send a paging instruction to the second terminal device, for example,
  • the fifth indication information is sent to the second terminal device, so as to adapt to different scenarios.
  • the present application provides a communication method, which is applied to a network device, or to a component in a network device, such as a chip, which includes: sending a paging of the second terminal device, and the paging carries the first Information for the first terminal device to forward paging to the second terminal device according to the first information, where the first information is used to indicate at least one of the following: packet delay budget for forwarding paging, forwarding paging The delay requirement of paging or the priority of forwarding paging.
  • the first terminal device may be a relay terminal device
  • the network device may send a paging to the first terminal device, and the paging may be forwarded by the first terminal device to the second terminal device based on the first information Paging, when the first information is used to indicate the PDB or delay requirement for forwarding paging, the relay terminal device can forward the paging to the remote terminal device according to the PDB or delay requirement for forwarding paging in the first information , so as to ensure that the time delay for the paging of the remote terminal device to be forwarded meets the requirement of the upper limit of the time delay, and improve the performance of the relay terminal device for forwarding the paging of the remote terminal device.
  • the relay terminal device may determine the priority of forwarding paging through the first information, so that the relay terminal device may, according to the priority of forwarding paging, Forward the paging to the remote terminal equipment to ensure that the paging of the high-priority remote terminal equipment can be forwarded preferentially.
  • the first terminal device may also determine the sidelink resource according to the first information, and the sidelink resource helps to ensure the delay of the message sent to the second terminal, and improves the forwarding time of the message sent by the relay terminal device to the remote terminal. The capabilities of the device's messages.
  • the paging of the second terminal device includes: sixth indication information, where the sixth indication information is used to indicate a packet delay budget for forwarding paging or a delay requirement for forwarding paging ;
  • the paging of the second terminal device includes: seventh indication information, where the seventh indication information is used to indicate the priority of forwarding the paging.
  • the paging message can carry the indication information, so that the first terminal device can obtain the forwarding page indicated by the first information while receiving the paging sent from the network device to the second terminal device.
  • At least one of the packet delay budget for paging, the delay requirement for forwarding paging, or the priority for forwarding paging is used to forward paging to the second terminal device or determine the sidelink link based on the first information. resources to prepare.
  • the first information is further used to determine a sidelink resource, where the sidelink resource is a sidelink resource used for forwarding paging to the second terminal device.
  • the selected sidelink resource helps to ensure the time delay of forwarding the paging to the second terminal device, and improves the performance of the relay terminal device forwarding the paging of the remote terminal device.
  • the first information is further used to determine a remaining packet delay budget for forwarding paging, and the remaining packet delay budget is used to determine side link resources.
  • the remaining packet delay budget for forwarding paging can be determined, and then the side link resources can be determined accordingly.
  • the link resource helps to ensure the time delay of the message sent to the second terminal, and improves the performance of the relay terminal device forwarding the message of the remote terminal device.
  • the second terminal device is at least one of the following: a remote terminal Devices, remote terminal devices that support layer 2 relay, terminal devices that support the capabilities of remote terminal devices, terminal devices that support layer 2 relay capabilities, and terminal devices that receive and forward paging.
  • the network device when the network device determines that the second terminal device is a remote terminal device, it can send the first indication information or the second indication information to the first terminal device, so that the first terminal device obtains the first information, and according to the second A message forwards paging to the second terminal device, so that when the second terminal device is not a remote terminal device, that is, when the first terminal device does not need to forward paging for the first terminal device, it may not receive the first indication information or
  • the second indication information is used to save signaling overhead and the overhead of receiving the first indication information or the second indication information by the first terminal device.
  • eighth indication information from the core network device may also be received, the eighth indication The information is used to indicate that the second terminal device is at least one of the following: a remote terminal device, a remote terminal device supporting layer 2 relay, a terminal device supporting the capability of a remote terminal device, or a remote terminal device supporting layer 2 relay Terminal equipment capable of terminal equipment, terminal equipment receiving forwarded paging.
  • the access network device can send the first instruction information or the second instruction information to the first terminal device when determining that the second terminal device is a remote terminal device by receiving the eighth indication information. indicating information, so that the first terminal device obtains the first information, and forwards paging to the second terminal device according to the first information, so that when the second terminal device is not a remote terminal device, that is, the first terminal device does not need to be a
  • the first terminal device forwards the paging, it may not receive the first indication information or the second indication information, so as to save signaling overhead and overhead of the first terminal device receiving the first indication information or the second indication information.
  • the paging of the second terminal device includes at least one of the following:
  • third indication information where the third indication information is used to indicate that the second terminal device is paged
  • Fourth indication information where the fourth indication information is used to instruct the first terminal device to forward paging to the second terminal device.
  • the forwarding the paging to the second terminal device includes at least one of the following:
  • the present application provides a communication device, and the communication device may be a relay terminal device, or a component in the relay terminal device, such as a chip.
  • the communication device may be the first terminal device described in the first aspect above, and the first terminal device is, for example, a relay terminal device, or a baseband device in a relay terminal device.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication device includes a processing module (sometimes also called a processing unit), a sending module, and a receiving module (sometimes also called a transceiver module, a transceiver unit, a receiving unit, and a sending unit).
  • the device may include a processing module and a sending module.
  • the device may also include a receiving module.
  • the device may execute any method in the implementation methods of the first aspect above.
  • the communication device further includes a storage module, the processing module is configured to be coupled to the storage module, and execute programs or instructions in the storage unit to enable the communication device to Execute the functions of the terminal device described in any one of the first aspects above.
  • the present application provides a communication device, and the communication device may be a network device, or a component in the network device, such as a chip.
  • the device may include a processing module and a receiving module.
  • the device may also include a sending module.
  • the device may execute any method in the implementation methods of the second aspect above.
  • the network equipment is, for example, a base station, or a baseband device in a base station.
  • the communication device includes a baseband device and a radio frequency device.
  • the communication device includes a processing module (sometimes also called a processing unit), a sending module, and a receiving module (sometimes also called a transceiver module, a transceiver unit, a receiving unit, and a sending unit).
  • a processing module sometimes also called a processing unit
  • a sending module sometimes also called a sending module
  • a receiving module sometimes also called a transceiver module, a transceiver unit, a receiving unit, and a sending unit.
  • the communication device further includes a storage module, the processing module is configured to be coupled to the storage module, and execute programs or instructions in the storage unit to enable the communication device to Execute the function of the network device described in any one of the above second aspects.
  • the present application provides a communication device, including a processor and a memory, the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device Execute any method in the implementation method of the first aspect above.
  • the present application provides a communication device, including a processor and a memory, the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device Execute any method in the implementation method of the second aspect above.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when it is run on a computer, the computer executes the above-mentioned first aspect to the second aspect. Implement any of the methods.
  • the embodiment of the present application further provides a computer program product, the computer product includes a computer program, and when the computer program is run, any method in the implementation methods of the first aspect to the second aspect above is executed.
  • the embodiment of the present application further provides a chip system, including: a processor, configured to execute any method in the implementation methods of the first aspect to the second aspect above.
  • the embodiment of the present application further provides a communication system, including the third aspect or the fifth aspect, and including the fourth aspect or the sixth aspect.
  • the communication system may further include the second terminal device in each implementation method of the above first aspect to the second aspect.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIGS. 2A-2B are schematic diagrams of possible application scenarios provided by the embodiment of the present application.
  • 3A-3B are schematic diagrams of possible application scenarios provided by the embodiment of the present application.
  • FIG. 3C is a schematic diagram of a possible paging scenario
  • 4A-4B are schematic flowcharts of a communication method provided by an embodiment of the present application.
  • 9 to 11 are schematic structural diagrams of a communication device provided by an embodiment of the present application.
  • PDB which is one of the quality of service (QoS) parameters, is the upper limit of the delay of data packets transmitted between the sending user equipment (user equipment, UE) and the receiving user equipment, wherein, the sending user equipment and the receiving user equipment PC5 communication can be performed between user equipments using the PC5 interface.
  • QoS quality of service
  • Terminal equipment is a device with wireless transceiver function, which can be fixed equipment, mobile equipment, handheld equipment (such as mobile phones), wearable equipment, vehicle-mounted equipment, or wireless devices built into the above equipment (such as communication modules , modem, or chip system, etc.).
  • the terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, including but not limited to the following scenarios: cellular communication, device-to-device communication (device-to-device, D2D), car-to-everything (vehicle to everything, V2X), machine-to-machine/machine-type communications (machine-to-machine/machine-type communications, M2M/MTC), Internet of things (Internet of things, IoT), virtual reality (virtual reality, VR) , augmented reality (augmented reality, AR), industrial control (industrial control), unmanned driving (self driving), telemedicine (remote medical), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation , Terminal equipment for smart cities, drones, robots and other scenarios.
  • cellular communication device-to-device communication
  • D2D device-to-device, D2D
  • car-to-everything vehicle to everything
  • V2X machine-to-machine/mach
  • the terminal equipment may sometimes be referred to as user equipment (user equipment, UE), terminal, access station, UE station, remote station, wireless communication device, or user device, etc.
  • user equipment user equipment
  • UE user equipment
  • access station UE station
  • remote station wireless communication device
  • wireless communication device or user device, etc.
  • the terminal device is taken as an example for description.
  • the terminal device can pass through the relay terminal device ( UE-to-Network relay UE) communicates with network devices.
  • the relay terminal device UE-to-Network relay UE
  • the relay terminal device may also be referred to as a relay user equipment (relay UE), and the relay terminal device may be a terminal device that provides network access for a remote (remote) terminal device.
  • the remote terminal equipment may also be referred to as remote user equipment (remote UE).
  • a remote UE refers to a UE that requires other UEs to provide relay services to access the network;
  • a relay UE refers to a UE that provides relay services for other UEs.
  • relay UE For relay UE to provide relay service for remote UE, it can be understood that the information sent by remote UE to the network device is forwarded to the network device through the relay UE, and the information sent by the network device to the remote UE is also forwarded to the remote UE through the relay UE .
  • the access network device is a device with a wireless transceiver function, and is used for communicating with the terminal device.
  • the access network equipment includes, but is not limited to, the base station (BTS, Node B, eNodeB/eNB, or gNodeB/gNB), the transmission reception point (transmission reception point, TRP) and the third generation partnership project (3rd generation partnership project) in the above-mentioned communication system.
  • the base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like. Multiple base stations may support the aforementioned networks of the same access technology, or may support the aforementioned networks of different access technologies.
  • a base station may contain one or more co-sited or non-co-sited transmission and reception points.
  • the network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the network device can also be a server, a wearable device, or a vehicle-mounted device, etc.
  • a network device in a vehicle to everything (V2X) technology may be a road side unit (RSU).
  • the base station is used as an example for the access network device to be described.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • a terminal device can communicate with multiple base stations in different access technologies.
  • the core network equipment is used to implement functions such as mobility management, data processing, session management, policy and charging.
  • the names of devices implementing core network functions in systems with different access technologies may be different, which is not limited in this embodiment of the present application.
  • the core network equipment includes: access and mobility management function (access and mobility management function, AMF), session management function (session management function, SMF), policy control function (policy control function, PCF) or User plane function (user plane function, UPF), etc.
  • access and mobility management function access and mobility management function
  • AMF access and mobility management function
  • SMF session management function
  • policy control function policy control function
  • PCF Policy control function
  • UPF User plane function
  • the communication device for realizing the function of the network device may be a network device, or a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.
  • NR sidelink was standardized in NR V2X. This release focuses on supporting V2X-related road safety services.
  • the content of NR sidelink relay was established, and the sidelink-based relay function was studied to improve sidelink/network coverage and UE power efficiency, and to consider a wider range of applications and services.
  • the NR sidelink relay function specifically includes UE-to-Network coverage extension and UE-to-UE coverage extension.
  • the ProSe UE-to-Network relay function is standardized in Release 13, which is based on EUTRA technology and cannot be applied to NR systems (including NG-RAN and NR-based sidelink communication).
  • the relay UE forwards data between the remote UE and the network/PDN at the IP layer, which belongs to Layer-3 (Layer-3) relay.
  • Layer-3 Layer-3
  • Layer-2 Layer-2
  • the relay terminal device can be based on the packet data convergence protocol (packet data convergence protocol, PDCP) layer or the protocol layer below the PDCP layer (for example, the backhaul adaptation protocol (backhaul adaptation protocol, BAP) layer ( It can also be called an adaptation layer), a radio link control (radio link control, RLC) layer) for relaying.
  • PDCP packet data convergence protocol
  • BAP backhaul adaptation protocol
  • RLC radio link control
  • the access network device and the remote terminal device may have a peer-to-peer PDCP layer, a service data adaptation protocol (service data adaptation protocol, SDAP) layer, an RRC layer, and the like.
  • the radio link control (radio link control, RLC) layer, the media access control (media access control, MAC) layer and the physical layer (physics, PHY) are between the remote terminal equipment and the relay terminal equipment, and between the relay terminal equipment There is an end-to-end connection between terminal equipment and access network equipment.
  • An RRC connection can be established between the remote terminal device and the access network device, and RRC messages can be exchanged through the relay terminal device. In this case, it can be considered that the remote terminal device communicates with the access network device through the relay terminal device.
  • D2D communication based on cellular network also known as proximity service (Proximity service, ProSe) in the third generation partnership project (the 3rd generation partnership project, 3GPP)
  • ProSe proximity service
  • 3GPP Third Generation Partnership Project
  • ProSe Direct Communication direct communication between two or more adjacent ProSe-enabled UEs without passing through any network nodes.
  • ProSe direct communication can be realized through the access layer function of sidelink communication.
  • 5G ProSe Direct Communication direct communication between two or more adjacent ProSe-enabled UEs, without passing through any network nodes, using NR technology.
  • relay UE ProSe UE-to-Network relay
  • 5G ProSe UE-to-Network relay is a UE that provides the function of supporting remote UE to connect to the network.
  • sidelink communication Direct communication between two or more adjacent UEs without passing through any network nodes.
  • NR sidelink communication enabling the access layer function of vehicle to everything (vehicle to everything,) V2X communication between two or more UEs.
  • V2X communication Vehicle to everything
  • NR sidelink communication can also enable 5G ProSe Direct Communication.
  • PC5 reference point/interface reference point/interface between UEs.
  • Uu reference point/interface UE and radio access network (for example, next generation (next generation, NG)-RAN, evolved universal mobile telecommunications system terrestrial radio access network (evolved universal mobile telecommunications system terrestrial radio access network, E- UTRAN)) between reference points/interfaces.
  • radio access network for example, next generation (next generation, NG)-RAN, evolved universal mobile telecommunications system terrestrial radio access network (evolved universal mobile telecommunications system terrestrial radio access network, E- UTRAN) between reference points/interfaces.
  • FIG. 1 is a schematic diagram of a scenario where a remote UE connects to a network through a relay UE.
  • the core network accessed by the relay UE is a 5G core network (5G core, 5GC) or an evolved packet core network (evolved packet core, EPC) as an example.
  • 5G core 5G core
  • EPC evolved packet core
  • NR sidelink communication or sidelink communication can be used on the PC5 interface between the remote UE and the relay UE.
  • the remote UE is connected to the relay UE through the PC5 interface
  • the relay UE is connected to the radio access network (radio access network, RAN) through the Uu interface.
  • radio access network radio access network
  • SL transmission is between a pair of source (source) and destination (destination).
  • the source can be identified by the source layer 2 (source layer-2) identity number (ID), and the destination can be identified by the destination layer-2 ID.
  • the source layer-2 ID can be used to identify the sender (sender) of data in SL communication, and the destination layer-2 ID can be used to identify the target (target) or receiver of data in SL communication.
  • the sender refers to the source of SL communication (or a media access control (media access control, MAC) protocol data unit (protocol data unit, PDU)), and the receiver refers to SL communication (or a MAC PDU) the destination.
  • media access control media access control
  • PDU protocol data unit
  • PC5-radio resource control (RRC) connection is a logical connection between two UEs of a source and destination pair. After the PC5 unicast link (PC5 unicast link) between two UEs is established, the corresponding PC5-RRC connection is established. There is a one-to-one correspondence between the PC5-RRC connection and the PC5 unicast link.
  • PC5 unicast link PC5 unicast link
  • the sidelink signaling channel SL-SCH (slidelink signaling Channel) can transmit data in the common control channel (SCCH), data in the stealing channel (stealing channel, STCH) and SL medium access control (medium Access control (MAC) channel resource (channel element, CE) (for example, MAC CE of sidelink channel state information reporting (Sidelink channel state information reporting)).
  • SCCH common control channel
  • STCH stealing channel
  • MAC medium access control
  • CE medium Access control
  • the SL-SCH transmission channel supports UE autonomous resource selection and base station scheduling resource allocation.
  • Radio resource control (radio resource control, RRC) state the terminal device has three RRC states: RRC connected (connected) state, RRC idle (idle) state and RRC inactive (inactive) state.
  • connection state (or, can also be referred to as connection state for short.
  • connection state and “RRC connection state” are the same concept, and the two terms can be interchanged): the terminal device has established an RRC connection with the network, and can for data transfer.
  • RRC idle state (or, can also be referred to as idle state for short.
  • idle state and “RRC idle state” are the same concept, and the two terms can be interchanged): the terminal device has not established an RRC connection with the base station, and the base station No context is stored for this end device. If the terminal device needs to enter the RRC connected state from the RRC idle state, it needs to initiate an RRC connection establishment process.
  • RRC inactive state (or, also may be referred to as RRC inactive state, or simply called inactive state or inactive state.
  • RRC inactive state or, also may be referred to as RRC inactive state, or simply called inactive state or inactive state.
  • “deactivated state”, “inactive state”, “deactivated state”, “ Deactivated state”, “inactive state”, “RRC inactive state” or “RRC deactivated state”, etc. are the same concept, and these types of names can be interchanged): the terminal device has entered the RRC connection at the anchor base station before state, and then the anchor base station releases the RRC connection, but the anchor base station saves the context of the terminal device. If the terminal equipment needs to enter the RRC connection state again from the RRC inactive state, it needs to initiate the RRC connection recovery process at the base station where it currently resides.
  • the base station where the terminal device currently camps and the anchor base station of the terminal device may be the same base station, or may be different base stations.
  • the RRC recovery process has shorter delay and less signaling overhead.
  • the base station needs to save the context of the terminal device, which will occupy the storage overhead of the base station.
  • the network may page the terminal device. correspondingly, the terminal device needs to monitor paging.
  • radio resource control radio resource control, RRC
  • Idle idle connection state
  • RRC inactive state active
  • the terminal device can wake up on the paging occasion (PO) of the terminal device to monitor the paging downlink control information (downlink control information, DCI), or monitor the PDCCH, and sleep at other times except PO, so that Reduce power consumption of end devices.
  • UE can monitor one PO in each DRX cycle.
  • a PO is a group of PDCCH monitoring opportunities, which may include multiple subframes or multiple orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols.
  • the paging DCI may include a 2-bit field, which may indicate that the paging DCI includes scheduling information, or includes a short message (short message), or includes scheduling information and a short message.
  • the scheduling information is used to schedule paging messages, for example, the scheduling information includes time-frequency resource information or modulation and coding information of paging messages.
  • the short message can indicate whether the system information has changed, earthquake and tsunami warning system (earthquake and tsunami warning system, ETWS) notification or commercial mobile alert service (commercial mobile alert service, CMAS) notification, etc.
  • the UE After detecting the paging DCI, the UE decodes the DCI. If the paging DCI includes the scheduling information of the paging message, the UE receives the paging message. If the paging DCI does not include scheduling information but only includes short messages, the UE does not need to receive paging messages.
  • system and “network” in the embodiments of the present application may be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • A/B means: A or B.
  • “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • first and second mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, and timing of multiple objects , priority or importance, etc.
  • first identifier and the second identifier may be the same identifier or different identifiers, and this name does not represent the amount of information, content, priority or importance of the two identifiers, etc. different.
  • the technical solution provided by the embodiment of the present application can be applied to the fourth generation mobile communication technology (the 4th generation, 4G) system, such as the LTE system, or can be applied to the 5G system, such as the NR system, or can also be applied to the next generation
  • the 4th generation, 4G mobile communication technology
  • the 5G system such as the NR system
  • the mobile communication system or other similar communication systems are not specifically limited.
  • the technical solutions provided by the embodiments of the present application can be applied to device-to-device (D2D) scenarios, such as NR-D2D scenarios, etc., or can be applied to vehicle-to-everything (V2X) scenarios, such as NR-V2X scenarios, etc., can be applied to the Internet of Vehicles, such as V2X, vehicle-to-vehicle (V2V), etc., or can be used in fields such as intelligent driving, assisted driving, or intelligent networked vehicles.
  • D2D device-to-device
  • V2X vehicle-to-everything
  • V2X vehicle-to-everything
  • FIG. 2A is a schematic diagram of another application scenario of the embodiment of the present application.
  • FIG. 2A includes a terminal device 1 , a terminal device 2 , an access network device, a core network device 1 and a core network device 2 .
  • the access network device is the access network device accessed by the terminal device 1
  • the core network device 1 is the core network device serving the terminal device 1
  • the core network device 2 is the core network device serving the terminal device 2
  • the terminal device 1 is a relay terminal device
  • terminal device 2 is a remote terminal device, or in other words, terminal device 1 provides a relay service for terminal device 2 .
  • terminal device 1 For terminal device 1 to provide relay service for terminal device 2, it can be understood that the information sent by terminal device 2 to the access network device is forwarded to the access network device through terminal device 1, and the access network device sends the information to the terminal device 2 is also forwarded to terminal device 2 through terminal device 1.
  • FIG. 2B is a schematic diagram of another application scenario of the embodiment of the present application.
  • FIG. 2B includes a terminal device 1, a terminal device 2, an access network device 1, an access network device 2, and a core network device.
  • the access network device 1 is the access network device that the terminal device 1 initially accesses
  • the access network device 2 is the access network device that the terminal device 1 accesses after switching
  • the core network device is the core network that serves the terminal device 1 devices
  • terminal device 1 is a relay terminal device
  • terminal device 2 is a remote terminal device, or in other words, terminal device 1 provides a relay service for terminal device 2 .
  • the terminal device 1 For the terminal device 1 to provide the relay service for the terminal device 2, it can be understood that the information sent by the terminal device 2 to the access network device 1 is forwarded by the terminal device 1 to the access network device 1, and the information sent by the access network device to the The information of the terminal device 2 is also forwarded to the terminal device 2 through the terminal device 1 .
  • access network device 1 may be the last access network device connected by terminal device 1, the core network device may send a message to access network device 1, and access network device 1 may forward the message sent by the core network device to terminal device 1.
  • the access network device 1 may also forward the message to the access network device 2, and after the terminal device 1 accesses the access network device 2, the access network device 2 may send the message to the terminal device 1.
  • FIG. 3A is a schematic diagram of an application scenario of the embodiment of the present application.
  • the remote terminal device is connected to the relay terminal device, and the remote terminal device can communicate with the network device through the relay terminal device.
  • FIG. 3B again, which is a schematic diagram of another application scenario of the embodiment of the present application.
  • the remote terminal device is connected to the relay terminal device, and the remote terminal device can communicate with the network device through the relay terminal device.
  • the difference between FIG. 3A and FIG. 3B is that, in FIG. 3A , the remote terminal device is in-coverage (in-coverage), and in FIG. 3B , the remote terminal device is out-of-coverage (out-of-coverage).
  • the network device in FIG. 3A or FIG. 3B is, for example, an access network device, and the access network device is, for example, a base station.
  • the access network equipment corresponds to different equipment in different systems, for example, in the 4G system, it may correspond to eNB, and in the 5G system, it may correspond to the access network equipment in 5G, such as gNB.
  • the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the access network equipment in FIG. 3A or FIG. 3B can also correspond to network equipment in future mobile communication systems.
  • the embodiment of the present application takes the access network device as a base station as an example.
  • the access network device may also be a device such as an RSU.
  • the access network devices in FIG. 1 , FIG. 2A to FIG. 2B , and FIG. 3A to FIG. 3B are, for example, base stations.
  • the access network equipment corresponds to different equipment in different systems, for example, in the 4G system, it may correspond to eNB, and in the 5G system, it may correspond to the access network equipment in 5G, such as gNB.
  • the technical solutions provided by the embodiments of this application can also be applied to future mobile communication systems, so the access network equipment in Figure 1, Figure 2A-2B, and Figure 3A-3B can also correspond to future mobile communication systems network devices in .
  • Figures 1, 2A-2B, and 3A-3B take the access network device as a base station as an example.
  • the access network device can also be RSU and other devices.
  • the core network device in FIG. 1 , FIG. 2A to FIG. 2B , and FIG. 3A to FIG. 3B is, for example, an AMF, or may be other core network devices.
  • the remote terminal device Since the remote terminal device directly registers the service of the remote terminal device in the core network, when the core network device has the service of the remote terminal device, it will communicate with the remote terminal device through the wireless access network (radio access network, RAN). The end terminal device performs paging (paging), and the remote terminal device needs to camp on the air interface to monitor the paging. Since the power consumption of the Uu port is relatively large, it will bring relatively large energy consumption to the remote terminal equipment. Moreover, a typical implementation manner of the remote terminal device is that the remote terminal device can be realized by a wearable device such as a smart watch or a smart bracelet. In this scenario, it is obvious that the battery capacity of the remote terminal device will not be too large.
  • the remote terminal device resides on the Uu air interface to monitor paging and brings a large power consumption, the use of the remote terminal device will be reduced. Time may cause the remote terminal device to not have sufficient power supply for normal use, or the remote terminal device needs to be charged frequently, which is inconvenient.
  • the remote terminal device may not be able to camp on the Uu air interface to monitor paging.
  • the remote terminal equipment can be connected to the relay UE, and the relay terminal equipment will monitor the paging for the remote terminal equipment, that is, the remote terminal equipment does not need to be on the Uu port Monitor paging, this work is done by the relay terminal equipment.
  • the relay UE monitors paging on the PO of the remote terminal equipment.
  • the relay UE can be in RRC connected state (RRC_Connected), or in RRC idle state (RRC_Idle), or RRC inactive state (RRC_Inactive).
  • the relay terminal device can send the monitored paging to the remote terminal device through the PC5 interface.
  • FIG. 3C is an implementation process of the relay terminal device monitoring paging for the remote terminal device.
  • the relay terminal device sends system information to the remote terminal device
  • the base station sends paging to the relay terminal device, and the relay terminal device receives the paging from the base station.
  • the paging can be used to page a remote terminal device.
  • the relay UE monitors/receives the paging of the remote UE, and the relay UE forwards the paging to the remote UE.
  • monitoring/receiving paging of remote UE includes one or more of the following:
  • the relay UE monitors/receives paging in the following two ways:
  • the relay UE monitors paging on the PO of the remote UE.
  • the relay UE can be in RRC_Connected state, or RRC_Idle or RRC_Inactive.
  • the base station When the relay UE is in the RRC_Connected state, the base station sends dedicated signaling to the relay UE, including or indicating the paging of the remote UE.
  • the base station may send paging to the relay terminal device, and the relay terminal device monitors/receives the paging from the remote terminal device of the base station.
  • monitoring/receiving the paging of the remote UE includes one or more of the following: monitoring/receiving the paging DCI, monitoring/receiving the paging message, and monitoring/receiving the paging indication.
  • the base station may not separately send a paging message to the relay terminal device.
  • a base station sends a paging message on a paging channel, and all terminal devices can receive the paging message. Therefore, the relay terminal device can also receive the paging of the remote terminal device sent by the base station.
  • the base station can send the paging DCI before sending the paging.
  • the paging DCI includes paging scheduling information
  • the base station will send the paging again, and the relay terminal device will also send the paging DCI after receiving the paging DCI. Listen for paging again.
  • the relay terminal device can determine the PO of the remote terminal device, the relay terminal device will wake up when the PO of the remote terminal device arrives, and monitor paging for the remote terminal device. If the base station needs to page the remote terminal equipment, it will also perform paging at the PO. Wherein, monitoring the paging on the PO may be monitoring DCI for scheduling paging messages on the PO.
  • the relay terminal device forwards the paging to the remote terminal device.
  • the remote terminal device receives the forwarded paging sent from the relay terminal device.
  • the relay terminal device After the relay terminal device determines whether the received paging is used to page the remote terminal device, the relay terminal device forwards the paging to the remote terminal device. For the relay terminal device, in addition to monitoring the paging of the relay terminal device, it also monitors the paging for the remote terminal device and forwards the paging to the remote terminal device.
  • one terminal device forwards paging to another terminal device, which can be understood as that one terminal device sends to another terminal device the paging of another terminal device that it monitors or receives. , for example, listening to or receiving a paging message from another terminal device, or listening to or receiving indication information indicating that another terminal device is paged, or listening to or receiving an indication of itself sending another terminal device The indication information of the terminal device to send paging.
  • the forwarding paging may also be generated after monitoring or receiving the paging of another terminal device, for example, generating indication information that the other terminal device is paged.
  • forwarding paging may be either that one terminal device forwards to another terminal device the instruction information that the other terminal device is paged, or one terminal device forwards the paging instruction information to another terminal device, or one terminal device sends Another terminal device forwards at least one item of the paging message.
  • the forwarding of paging by the first terminal device to the second terminal device may include that the first terminal device sends to the second terminal device the paging of the second terminal device received by the first terminal device from the network device (including the A paging message, third indication information, or fourth indication information of the second terminal device, where the third indication information is used to indicate that the first terminal device is paged; the fourth indication information is used to indicate that the The first terminal device forwards the paging to the second terminal device) and the first terminal device sends to the second terminal device indication information that the second terminal device is paged (fifth indication information, and the fifth indication information is used for indicating that the second terminal device is paged).
  • the description of "the first terminal device forwards paging to the second terminal device” is equivalent to “the second terminal device receives the paging of the network device through the first terminal device”.
  • the description of "the second terminal device forwards paging for the first terminal device” is equivalent to “the first terminal device receives a paging from the network device through the second terminal device”.
  • the relay UE monitors or receives the paging of the remote terminal device. It can be understood that the relay UE monitors or receives the paging of the remote terminal device, including one or more of the following: monitor or receive paging DCI, monitor or receive paging message, listen to or receive paging indications.
  • the relay terminal device may use the SL-SCH transmission channel to forward the paging to the remote terminal device.
  • the relay terminal device may select sidelink resources according to the remaining packet delay budget (remaining PDB) of SL data.
  • the upper layer (V2X layer or ProSe layer) of the relay terminal device can pass the PDB of SL data to the access (access stadium, AS) layer, so that the relay terminal device can determine the remaining packet delay budget by itself, for example,
  • the relay terminal device can determine the remaining PDB according to the PDB of the SL data and the buffering time of the SL data. According to the remaining PDB, the relay terminal device selects sidelink resources so that the sidelink resources meet the condition of the remaining packet delay budget of SL data.
  • the relay terminal device can send the SL data according to the remaining PDB of 1 ms to ensure the service delay requirement.
  • the relay terminal device forwards the paging of the remote terminal device
  • the relay UE does not know the PDB that the relay terminal device forwards the paging to the remote terminal device, so it cannot It is determined that the relay terminal device forwards the remaining PDB of the paging to the remote terminal device, so that resources cannot be selected according to the remaining PDB of the relay terminal device forwarding the paging to the remote terminal device, and the relay terminal device forwards the paging to the remote terminal device
  • the delay cannot be guaranteed, and the reliability of transmission performance is reduced.
  • the embodiment of the present application provides a communication method to ensure the time delay for the relay terminal device to forward paging to the remote terminal device.
  • the communication method and device provided in the embodiments of the present application will be described in detail below in combination with different scenarios and accompanying drawings.
  • the relay terminal device By configuring the PDB for the relay terminal device to forward paging to the remote terminal device (PDB for forwarding paging) or the delay requirement for the relay terminal device to forward paging to the remote terminal device (the PDB for forwarding paging) Delay requirement), so that the relay terminal device determines the PDB or delay requirement for forwarding paging to the remote terminal device, so that the relay terminal device forwards the paging to the remote terminal device according to the PDB or delay requirement for forwarding paging paging to ensure the delay of paging being forwarded.
  • FIG. 4A it is a flow chart of a communication method provided by the embodiment of the present application. In the following introduction process, it is taken as an example that this method is applied to the network architecture shown in FIG. 1 , FIGS. 2A-2B , and FIGS. 3A-3B .
  • the network device described below may be a core network device and/or access network device serving the first terminal device, or a core network device and/or access network device serving the second terminal device, the core network device For example, it is an AMF, and the access network device is, for example, a base station.
  • the second terminal device described below may be the terminal device 2 (that is, the remote terminal device) in the network architecture shown in FIG. 1
  • the first terminal device described herein may be the terminal device 1 (that is, the relay terminal device) in the network architecture shown in FIG. 1 .
  • the second terminal device described below can be the The terminal device 2 (that is, the remote terminal device) in the network architecture shown in 3B, the first terminal device described below may be the network architecture shown in Figure 1, Figure 2A-2B, and Figure 3A-3B
  • the terminal device 1 (that is, the relay terminal device), the network device described below may be the core network device 1 or the base station in the network architecture shown in Figure 1, Figure 2A-2B, and Figure 3A-3B .
  • S401 The first terminal device obtains first information.
  • the first terminal device obtains the first information.
  • the first information is used to indicate at least one of the following: a packet delay budget for forwarding paging, and a delay requirement for forwarding paging.
  • the forwarded paging may be forwarded paging corresponding to the paging sent by the network device to the second terminal device.
  • the first information may include at least one of the following: a packet delay budget for forwarding paging, and a delay requirement for forwarding paging.
  • the first terminal device may directly obtain at least one of the packet delay budget for forwarding paging and the delay requirement for forwarding paging based on the first information.
  • the first terminal device may obtain indication information of at least one of packet delay budget for forwarding paging and delay requirement for forwarding paging based on the first information, and then, according to the indication information , at least one of packet delay budget for forwarding paging and delay requirement for forwarding paging is obtained.
  • indication information of at least one of packet delay budget for forwarding paging and delay requirement for forwarding paging based on the first information
  • the indication information at least one of packet delay budget for forwarding paging and delay requirement for forwarding paging is obtained.
  • the first terminal device may obtain one or more items of a packet delay budget for forwarding paging and a delay requirement for forwarding paging according to the delay information for forwarding paging.
  • the delay information of forwarding paging may include at least one of the following: the value of packet delay budget for forwarding paging (PDB for forwarding paging), the range interval where the PDB for forwarding paging is located, and the value of the PDB for forwarding paging.
  • PDB packet delay budget for forwarding paging
  • the maximum or minimum value of the value of the delay requirement for forwarding paging, the range of the delay requirement for forwarding paging, the maximum or minimum value of the delay requirement for forwarding paging, etc.
  • the first terminal device may, according to the delay information for forwarding paging, Obtain packet delay budget for forwarding paging.
  • the delay information for forwarding paging is the value of the packet delay budget for forwarding paging (PDB for forwarding paging)
  • the first terminal device may obtain the delay information for forwarding paging according to the delay information for forwarding paging. Latency requirements.
  • the first terminal device may obtain the delay requirement for forwarding paging according to the delay information for forwarding paging.
  • the delay information for forwarding paging is the value of the delay requirement for forwarding paging
  • the first terminal device can obtain the packet delay budget for forwarding paging (forwarding paging PDB).
  • the delay information for forwarding paging includes the range interval where the PDB for forwarding the page is located, the maximum or minimum value of the PDB for forwarding the page, the value of the delay requirement for forwarding the page, When the range of the delay requirement for forwarding paging is located, the maximum or minimum value of the delay requirement for forwarding paging, etc., the first terminal device can determine the PDB for forwarding paging according to the delay information for forwarding paging value or the value of the delay requirement for forwarding paging.
  • the first terminal device may determine that the PDB for forwarding paging or the delay requirement is in the range interval according to the delay information. value.
  • the delay information is the maximum value of the PDB or delay requirement for forwarding paging
  • the first terminal device may determine that the PDB or delay requirement for forwarding paging is less than or equal to the maximum value according to the delay information value.
  • the delay information is the minimum value of the PDB or delay requirement for forwarding paging
  • the first terminal device may determine that the PDB or delay requirement for forwarding paging is greater than or equal to the maximum value according to the delay information value.
  • the first terminal device may also use the range of the PDB or delay requirement for forwarding paging in the delay information, the maximum or minimum value of the PDB or delay requirement for forwarding paging, and the PDB for forwarding paging Priority, sidelink communication channel status between the second terminal device and the first terminal device (for example, channel quality, busy or congested condition of the channel), load of the first terminal device, capability of the first terminal device, One or more of the QoS of the service of the second terminal device determines the value of the PDB or the delay requirement for forwarding the page.
  • the first terminal device may obtain the delay information of forwarding paging, and the way A1 and way A2 are used as examples below.
  • the first terminal device may obtain the delay information of forwarding the paging in a manner indicated by the network device.
  • the network device may determine the delay information for forwarding the paging in various ways. For example, the network device may, according to the paging index (KPI) of the network, the paging priority (paging priority) of paging of the second terminal device, the side link between the second terminal device and the first terminal device Communication channel status (for example, channel quality, busy or congested condition of the channel), load of the first terminal device, capability of the first terminal device, QoS of the service of the second terminal device, data corresponding to trigger paging of the second terminal device.
  • KPI paging index
  • ARP Priority of Allocation and Retention
  • the paging priority of the paging of the second terminal device may be determined according to one or more of the QoS of the service of the second terminal device, the allocation corresponding to the data triggering paging of the second terminal device, and the reservation priority of.
  • the paging priority of the paging of the second terminal device may be determined by a network element of the core network, and the network element of the core network may indicate the paging priority of the paging of the second terminal device to the access network device, The access network device initiates the paging of the second terminal device according to the paging priority of the paging of the second terminal device.
  • the paging priority of the paging of the second terminal device may be the last serving access network device (for example, serving base station) or anchor access network device (for example, Anchor base station), the last serving access network device (for example, serving base station) or anchor access network device (for example, anchor base station) of the second terminal device may initiate paging of the second terminal device, or,
  • the last serving access network device (for example, serving base station) or anchor point access network device (for example, anchor point base station) of the second terminal device may send a message to other access network devices (for example, neighboring base stations or the current
  • the serving base station or the new serving base station of the second terminal device indicates the paging priority of the paging of the second terminal device, so that the other access network device can base the paging priority of the paging of the second terminal device, Initiate paging for the second terminal device.
  • the network device may send the first indication information.
  • the first indication information can be used to indicate the value of the PDB or delay requirement for forwarding paging (that is, the first indication information can be used to indicate the PDB or delay requirement for forwarding paging), and can also be used to indicate the value of forwarding paging
  • the range interval where the PDB or delay requirement of the paging is located may also be used to indicate the maximum or minimum value of the PDB or the delay requirement for forwarding the paging, which is not limited here.
  • the first terminal device receives the first indication information, and determines the delay information of forwarding paging according to the first indication information, and correspondingly, the first terminal device may determine the delay information of forwarding paging according to the delay information of forwarding paging.
  • the first indication information is carried in any of the following: system information block, radio resource control signaling.
  • the network device may include the first indication information in a broadcast signal (for example, a system information block (system information block, SIB)).
  • the network device may include the first indication information in the RRC signaling sent to the UE.
  • the network device may include the first indication information in the RRC dedicated signaling sent to the first terminal device.
  • the core network device sends the first indication information to the first terminal device.
  • the core network device includes the first indication information in non-access stratum (Non-access stratum, NAS) signaling.
  • Non-access stratum Non-access stratum
  • the network device can send the paging and the first indication information at the same time, or the network device can also send the paging and the first indication information separately, for example, the paging and the first indication information can be sent in the same message , can also be sent in different messages, which is not limited here.
  • the network device may also carry sixth indication information in the paging of the second terminal device, where the sixth indication information may be used to indicate the delay information of forwarding the paging, that is, by sending the first When the terminal device sends the paging, it indicates the delay information of forwarding the paging.
  • the first terminal device may determine the delay information of forwarding paging according to the sixth indication information, and then, the first terminal device may determine the delay information of forwarding paging according to the delay information of forwarding paging. The value of the PDB or delay requirement of the call.
  • the network device may determine the delay information for forwarding the paging in various ways.
  • the delay information for forwarding paging may be configured based on each cell or each resource pool or each terminal device (first terminal device or second terminal device), or resource configuration for forwarding paging.
  • the delay information for forwarding paging can be configured based on each cell (per cell). That is, one cell corresponds to one delay information for forwarding paging. According to the cell serving the first terminal device, the first terminal device determines the paging forwarding delay information corresponding to the cell. At this time, the first indication information may be sent by the network device in the system information block. The first terminal device receives the system information block of the serving cell sent by the network device, where the system information block may contain first indication information, and the first terminal device determines delay information for forwarding paging according to the first indication information.
  • the network device may also establish a corresponding relationship between cells and delay information for forwarding paging. For example, there may be a corresponding relationship between the delay information of forwarding paging and the identifier of the cell, and the network device determines the delay information of forwarding paging according to the cell accessed by the first terminal device, or, when the first terminal device accesses or When staying in a cell, the time delay information for forwarding paging may also be determined according to the cell where the first terminal device accesses or resides. For another example, the delay information for forwarding paging may also be determined according to the cell accessed by the first terminal device and the cell accessed by the second terminal device. It is not limited here.
  • the first indication information may be sent in radio resource control signaling or NAS signaling.
  • the delay information for forwarding paging can be configured based on resource pool (per resource pool).
  • a resource pool corresponds to a delay information for forwarding paging.
  • the first terminal device determines the delay information of forwarding the paging corresponding to the resource pool.
  • the first indication information may be sent in a system information block, NAS signaling or radio resource control signaling.
  • the first terminal device receives the resource pool configuration sent by the network device, and the first indication information may be included in the resource pool configuration.
  • the first terminal device determines the configuration of the resource pool used for forwarding the paging, which includes first indication information, and determines the delay information for forwarding the paging according to the first indication information.
  • the network device indicates the correspondence between the first indication information and the resource pool, the first terminal device determines the resource pool used to forward the paging, and determines the first indication information corresponding to the resource pool according to the correspondence, and determines the forwarding according to the first indication information. Paging delay information. In another possible implementation manner, the network device determines the corresponding relationship between the resource pool and the delay information for forwarding paging, and the network device determines the paging forwarding time corresponding to the resource pool according to the resource pool for forwarding paging by the first terminal device. Delay information, sending first indication information indicating the delay information of forwarding the paging to the first terminal device.
  • the delay information for forwarding paging may be configured based on the first terminal device (for example, per relay UE).
  • One first terminal device corresponds to one piece of delay information for forwarding paging. Forwarding the paging by the first terminal device to one or more second terminal devices corresponds to the delay information for forwarding the paging.
  • the first terminal device receives first indication information directed to the first terminal device sent by the network device, and determines delay information for forwarding paging according to the first indication information. At this time, the first indication information may be sent in radio resource control signaling or NAS signaling.
  • the network device may determine the delay information when determining that the first terminal device provides the relay service for the second terminal device.
  • the delay information for forwarding paging may be updated.
  • the first information may be updated when the first terminal device updates the second terminal device that provides the relay service for the second terminal device.
  • the network device may establish a corresponding relationship between the identifier of the first terminal device and the delay information for forwarding the paging.
  • the network device may determine paging forwarding delay information of the first terminal device according to the capability of the first terminal device. In this manner, when the first terminal device forwards paging to different second terminal devices, the time delay information used for forwarding paging is the same. At this time, the network device may determine the delay information for forwarding the paging according to the first terminal device.
  • the delay information for forwarding paging may be configured based on the second terminal device (for example, per remote UE).
  • One second terminal device corresponds to one piece of delay information for forwarding paging. Forwarding the paging by the first terminal device to a second terminal device corresponds to the delay information of forwarding the paging corresponding to the second terminal device.
  • the first terminal device receives first indication information directed to the second terminal device sent by the network device. At this time, the first indication information may be sent in radio resource control signaling or NAS signaling. In a possible implementation manner, there is a corresponding relationship between the first indication information and the second terminal device.
  • the network device indicates the corresponding relationship between the first indication information and the second terminal device, the first terminal device determines to forward paging to a second terminal device, and determines the first indication information corresponding to the second terminal device according to the corresponding relationship, and according to the first The indication information determines the delay information of forwarding the paging.
  • the network device may determine the delay information when determining that the first terminal device provides the relay service for the second terminal device.
  • the delay information may be updated when the second terminal device updates the first terminal device served by the relay.
  • the delay information for forwarding paging may be updated.
  • the network device may establish a correspondence relationship between the identifier of the second terminal device and the delay information for forwarding the paging.
  • the network device may determine paging forwarding delay information of the second terminal device according to the capability of the second terminal device. In this manner, when different first terminal devices forward paging to the same second terminal device, they use the same delay information for forwarding paging. Or, when the first terminal device forwards different paging to the same second terminal device, the same delay information for forwarding the paging is used. At this time, the network device may determine the delay information for forwarding the paging according to the second terminal device.
  • the delay information for forwarding paging may be configured based on the sidelink radio bearer (eg, sidelink SRB) or sidelink logical channel used for forwarding paging.
  • sidelink radio bearer eg, sidelink SRB
  • sidelink logical channel used for forwarding paging.
  • the sidelink radio bearer or the sidelink logical channel used for paging forwarding has corresponding paging forwarding delay information.
  • the first terminal device determines the delay information of forwarding the paging corresponding to the sidelink radio bearer or the sidelink logical channel.
  • the first indication information may be sent in a system information block, NAS signaling or radio resource control signaling.
  • the first terminal device receives the sidelink radio bearer configuration or the sidelink logical channel configuration sent by the network device, and the first indication information may be included in the sidelink radio bearer configuration or the sidelink logical channel configuration. In the logical channel configuration.
  • the first terminal device determines the sidelink radio bearer configuration or the sidelink logical channel configuration used for forwarding the paging, which includes first indication information, and determines the delay information for forwarding the paging according to the first indication information. In another possible implementation manner, there is a corresponding relationship between the first indication information and the sidelink radio bearer or the sidelink logical channel.
  • the network device indicates the correspondence between the first indication information and the sidelink radio bearer or the sidelink logical channel, and the first terminal device determines the sidelink radio bearer or the sidelink logical channel used to forward the paging, And according to the corresponding relationship, the first indication information corresponding to the sidelink radio bearer or the sidelink logical channel is determined, and the delay information for forwarding the paging is determined according to the first indication information.
  • the network device determines the corresponding relationship between the radio bearer of the side link or the logical channel of the side link and the delay information of forwarding paging, and the network device forwards the paging according to the side link used by the first terminal device.
  • the uplink radio bearer or the sidelink logical channel determines the delay information of the forwarded paging corresponding to the sidelink radio bearer or the sidelink logical channel, and sends a message indicating the forwarded paging to the first terminal device The first indication information of the delay information.
  • the delay information for forwarding paging can be configured based on the MAC CE on the sidelink used for forwarding paging.
  • the MAC CE on the sidelink used for forwarding paging has corresponding delay information for forwarding paging.
  • the first terminal device determines the delay information of forwarding paging corresponding to the MAC CE on the sidelink according to the MAC CE on the sidelink used for forwarding the paging.
  • the first indication information may be sent in a system information block, NAS signaling or radio resource control signaling. In a possible implementation manner, there is a corresponding relationship between the first indication information and the MAC CE on the sidelink.
  • the network device indicates the correspondence between the first indication information and the MAC CE on the side link, and the first terminal device determines the first indication information corresponding to the MAC CE on the side link used for forwarding paging according to the correspondence, according to The first indication information determines the delay information of forwarding the paging.
  • the network device determines the correspondence between the MAC CE on the side link and the delay information for forwarding the paging, and the network device forwards the paging according to the time delay information on the side link used by the first terminal device.
  • the MAC CE determines the delay information of forwarding paging corresponding to the MAC CE on the sidelink, and sends first indication information indicating the delay information of forwarding paging to the first terminal device.
  • Mode a2 The delay information for forwarding paging is configured based on each paging (per paging) or each paging message.
  • one paging corresponds to one paging forwarding delay information, that is, the first terminal device needs to apply the paging forwarding delay information to forward the paging.
  • a paging message corresponds to paging forwarding delay information, that is, the paging forwarding delay information needs to be applied when the first terminal device forwards the paging in the paging message.
  • the delay information for forwarding paging corresponding to different paging may be different.
  • the delay information for forwarding paging corresponding to different paging messages may be different.
  • the network device may carry sixth indication information indicating the delay information of forwarding the paging in the paging of the second terminal device.
  • the network device may carry sixth indication information indicating the delay information of forwarding the paging in the signaling of the paging location of the second terminal device.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), and each paging record includes The identity (UE-identity, UE ID) of the terminal equipment being paged.
  • the paging record of the second terminal device means that the terminal identifier in the paging record is the identifier of the second terminal device.
  • Some paging records also include sixth indication information.
  • the first terminal device determines that the identifier of the terminal device in the paging record is the identifier of the second terminal device, and determines the delay information for forwarding paging according to the sixth indication information in the paging record.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), and each paging record Contains the ID of the end device being paged.
  • the paging message also includes one or more sixth indication information, each sixth indication information has a corresponding relationship with a paging record, and the first terminal device determines that the identifier of the terminal device in the paging record is that of the second terminal device. According to the corresponding relationship, the sixth indication information corresponding to the paging record is determined, and the delay information for forwarding the paging is determined according to the sixth indication information.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), each paging record Contains the ID of the end device being paged.
  • the paging message also includes sixth indication information, and one or more paging records in the paging message correspond to the sixth indication information.
  • the first terminal device determines that the identifier of the terminal device in the paging record in the paging message is the identifier of the second terminal device, and determines the delay information for forwarding the paging according to the sixth indication information in the paging message.
  • the base station may configure paging forwarding delay information only for the second terminal device or only for the second terminal device that receives paging through the first terminal device.
  • the network device determines that the second terminal device corresponding to the paging is the remote terminal device, it determines to send the first indication information or the sixth indication information to the first terminal device.
  • the manner in which the network device determines that the second terminal device to be paged is a remote terminal device may be: determining that the second terminal device is a remote terminal device according to the capability or identity of the second terminal device, or determining that the terminal device is a A remote terminal device supporting L2 relay, or, determine that the terminal device is a UE capable of serving as a remote terminal device, or determine that the terminal device is a UE capable of serving as a remote terminal device supporting L2 relay, or, determine The terminal device is a UE that (possibly) receives forwarded pages.
  • the network device here may be a core network element (for example, AMF), or a last serving base station (last serving gNB) or an anchor base station (anchor gNB) of a remote terminal device.
  • the way a3 may be combined with the way a1 or the way a2, and is used for the network device to execute the way a1 or the way a2 when determining that the second terminal device is a remote terminal device.
  • the network device may send the first indication information or the sixth indication information to the first terminal device, so that the first terminal device obtains the forwarded paging information of the remote terminal device. time delay information.
  • the paging monitored by the UE in the RRC idle state can be CN paging (CN-initiated paging, CN paging), for CN paging, the core network element (for example, AMF) can send the access
  • a network device for example, a base station (NG-RAN node)
  • NG-RAN node a base station
  • the core network element (such as AMF) can determine that the paged UE is a remote terminal device, and then send the eighth indication information to the access network device, and the eighth indication information is used to indicate the terminal to be paged
  • the device is a remote terminal device.
  • the eighth indication information may be used to indicate that the terminal device is a remote terminal device, or that the terminal device is a remote terminal device that supports L2 relay, or that the terminal device is capable of being a remote terminal device
  • the UE, or the terminal device is a UE capable of serving as a remote terminal device supporting L2 relay, or the terminal device is a UE that (possibly) receives forwarded paging.
  • the eighth indication information may be included in the paging message sent by the core network element to the access network device.
  • the network element of the core network that sends the eighth indication information may be a network device serving the second terminal device, and the network device may be a different network device from the network device that sends the first indication information or the sixth indication information , can also be the same network device, which is not limited here.
  • the access network device may determine to send the first indication information or the sixth indication information for the paging. After the access network device receives the paging of the terminal device but does not receive the eighth indication information, it may determine not to send the first indication information or the sixth indication information for the paging.
  • the paging monitored by the UE in the RRC inactive state may be RAN-initiated paging (RAN paging).
  • RAN paging RAN-initiated paging
  • the remote terminal equipment moves in an inactive state, which may cause the access network equipment to be accessed to change.
  • the last serving base station (last serving gNB) of the UE in the RRC inactive state or the anchor base station (anchor gNB) of the UE can be the base station that stores the UE context of the UE, or it can be the base station that finally releases the UE to the RRC inactive state For example, the base station releases the UE from the RRC connected state to the RRC inactive state.
  • the UE's last serving base station (last serving gNB) or UE's anchor base station (anchor gNB) pages the remote terminal equipment, and can also send messages to neighboring base stations or UE's current serving base station or UE's new serving base station Send RAN paging (for example, RAN Paging of the Xn interface application protocol (application protocol, AP)), the neighboring base station or the current serving base station or the new serving base station paging the remote terminal equipment.
  • the last serving access network device (last serving base station) or anchor access network device (anchor base station) of the remote terminal device may determine that the paged UE is the remote terminal device.
  • the access network device After the last serving access network device or anchor access network device of the remote terminal device determines that the paged UE is the remote terminal device, it may send the first indication information or the sixth indication information for the paging of the terminal device. Correspondingly, after determining that the paged UE is not a remote terminal device, the access network device may not send the first indication information or the sixth indication information for the paging of the terminal device.
  • the last serving access network device (the last serving base station) or the anchor point access network device (anchor point base station) of the remote terminal device can also send a message to other access network devices (for example, other than the last serving base station) Other base stations or adjacent base stations or current serving base stations or new serving base stations) send eighth indication information, where the eighth indication information is used to indicate that the terminal device to be paged is a remote terminal device.
  • the other access network devices may send the first indication information or the sixth indication information for the paging.
  • the eighth indication information may be included in the XnAP RAN Paging sent by the last serving access network device or the anchor access network device to other access network devices.
  • the access network device sending the eighth indication information may be a network device serving the second terminal device, and the network device may be a different network device from the access network device sending the first indication information, or may be It is the same network device, which is not limited here.
  • the network device configures default delay information for forwarding paging.
  • the default paging forwarding delay information may be a default paging forwarding PDB or a delay requirement value configured by the network device.
  • the network device configures the default mode of forwarding the delay information of the paging, and may also refer to the mode of forwarding the delay information of the paging determined in at least one of the mode a1, the mode a2, and the mode a3, Determine the default delay information for forwarding paging.
  • the delay information for forwarding paging determined in ways a1-a3 can also be used as the default delay information for forwarding paging, for example, the default delay information for forwarding paging can be based on the The determination by the device may also be based on each second terminal device, may also be determined based on each cell, and may also be determined based on each paging resource. For a specific implementation manner, reference may be made to the foregoing manners a1 to a3, which will not be repeated here.
  • manner a4 may be combined with any one of manners a1 to a3.
  • the first terminal device may determine the forwarding time corresponding to the paging of the second terminal device according to the default paging delay information.
  • the paging delay information that is, the paging forwarding delay information corresponding to when the first terminal device forwards the paging to the second terminal device is the default paging forwarding delay information.
  • the first terminal device determines the delay information of forwarding paging corresponding to the paging of the second terminal device according to the first indication information or the sixth indication information .
  • the delay information for forwarding paging can be pre-configured or predefined.
  • the delay information for forwarding pages may be pre-configured.
  • the sidelink pre-configuration includes indication information of delay information for forwarding paging.
  • the sidelink pre-configuration may be pre-configured in a mobile equipment (mobile equipment, ME), or configured in a universal integrated circuit card (Universal Integrated Circuit Card, UICC).
  • the delay information for forwarding paging is predefined, for example, stipulated in a standard protocol.
  • mode A2 at least one of example a1.2, example a1.5, example a1.6, and mode a4 in mode A1 may also be referred to to determine the delay information for forwarding paging.
  • the difference from mode A1 is that in mode A2, the delay information for forwarding paging is not configured by the network device, but pre-configured or predefined.
  • the first indication information may be included in pre-configuration, or the first indication information is predefined, for example, stipulated in a standard protocol.
  • the first terminal device determines the delay information for forwarding paging according to the first indication information.
  • the first terminal device may determine the PDB for forwarding paging or the delay requirement for paging forwarding according to the delay information for forwarding paging. value.
  • the resource pool configuration is pre-configured or predefined.
  • the correspondence between the first indication information and the resource pool is preconfigured or predefined.
  • the sidelink radio bearer configuration or the sidelink logical channel configuration is preconfigured or predefined.
  • the correspondence between the first indication information and the sidelink radio bearer or the sidelink logical channel is preconfigured or predefined.
  • it indicates that the correspondence between the first indication information and the MAC CE on the sidelink is pre-configured or predefined.
  • the default delay information for forwarding paging is pre-configured or predefined.
  • the pre-configured or pre-defined default delay information for forwarding paging may be combined with any one of modes a1 to a3 in A1.
  • the first terminal device may determine the forwarding time corresponding to the paging of the second terminal device according to the default paging delay information.
  • the paging delay information that is, the paging forwarding delay information corresponding to when the first terminal device forwards the paging to the second terminal device is the default paging forwarding delay information.
  • the first terminal device determines the delay information of forwarding paging corresponding to the paging of the second terminal device according to the first indication information or the sixth indication information .
  • the network device sends the paging of the second terminal device to the first terminal device.
  • the first terminal device receives a page from the second terminal device of the network device.
  • the paging of the second terminal device includes one or more of the following:
  • the third indication information is used to indicate that the second terminal device is paged
  • the fourth indication information is used to instruct the first terminal device to forward the paging to the second terminal device.
  • the paging message used for paging the second terminal device may refer to a paging message including the paging record of the second terminal device, wherein the paging record of the second terminal device means that the paging record contains the paging record of the second terminal device. 2.
  • S402 may include at least one of S402-1 to S402-3.
  • the first terminal device receives a paging message sent by the network device for paging the second terminal device.
  • S402-2 The first terminal device receives third indication information sent by the network device.
  • S402-3 The first terminal device receives fourth indication information sent by the network device.
  • the first terminal device may receive the paging message sent by the network device and the fourth indication information, so that the first terminal device determines to forward the paging message to the second terminal device.
  • the first terminal device may receive the third indication information and the fourth indication information, so that the first terminal device determines that the second terminal device is paged, and determines to send The second terminal forwards the page.
  • the first terminal device may receive the paging message and the fourth indication information sent by the network device, so that the first terminal device determines to forward the paging message to the second terminal device.
  • the first terminal device may determine to forward the paging message to the second terminal device, and forward the paging message to the second terminal device.
  • S401 and S402 are not limited, and S401 and S402 may also be simultaneous.
  • the base station sends the first indication information and the paging information of the second terminal device to the first terminal device in the same signaling. .
  • the base station includes the sixth indication information in the paging of the second terminal device. For details, refer to S401, which will not be repeated here.
  • S403a The first terminal device forwards the paging to the second terminal device.
  • the first terminal device forwards the paging to the second terminal device after receiving the paging of the second terminal device sent by the base station.
  • forwarding paging from the first terminal device to the second terminal device may include one or more of the following:
  • forwarding paging from the first terminal device to the second terminal device may include one or more of the following:
  • S403a may include at least one of S403-1 to S403-4.
  • S403 may include S403-1: the first terminal device sends (or forwards) a paging message to the second terminal device.
  • the paging message is the paging message received by the first terminal device in S402-1.
  • the forwarding method may be transparent transmission, or the first terminal device may forward the paging message to the second terminal device after parsing the paging message, which is not limited here.
  • S403 may include S403-2: the first terminal device forwards (or sends) the third indication information to the second terminal device.
  • the third indication information is the third indication information received by the first terminal device in S402-2.
  • the forwarding method may be transparent transmission, or may be forwarded to the second terminal device after the first terminal device parses the third indication information, which is not limited here.
  • S403 may include S403-3: the first terminal device forwards (or sends) the fourth indication information to the second terminal device.
  • the fourth indication information is the fourth indication information received by the first terminal device in S402-3.
  • the forwarding method may be transparent transmission, or may be forwarded to the second terminal device after the first terminal device parses the fourth indication information, which is not limited here.
  • S403a may also determine fifth indication information according to receiving the paging of the second terminal device sent by the base station, for example, after receiving at least one of S402-1 to S402-3, where the fifth indication information is used to indicate that the second terminal equipment Two end devices are paged. Therefore, S403a may further include S403-4: the first terminal device sends fifth indication information to the second terminal device.
  • the first terminal device may receive the paging message sent by the network device and the fourth indication information, and at this time, the first terminal device may perform S403 -1 and S403-3, alternatively, the first terminal device may perform S403-1 and S403-4, so that the first terminal device determines to forward the paging to the second terminal device.
  • the first terminal device may receive the third indication information and the fourth indication information, at this time, the first terminal device may execute S403-2 and S403-3, or , the first terminal device may execute S403-2 and S403-4, so that the first terminal device determines that the second terminal device is paged, and determines to forward the paging to the second terminal device.
  • the first terminal device may receive the paging message and the fourth indication information sent by the network device, and at this time, the first terminal device may execute S403-1 and S403- 2.
  • the first terminal device may perform S403-1 and S403-4, or, the first terminal device may perform S403-2 and S403-3, or, the first terminal device may perform S403-1, S402-2 and S403-4, enabling the first terminal device to determine to forward the paging message or forward the paging indication (for example, forward the fifth indication information) to the second terminal device.
  • S402-1, S402-2, and S402-3 may also be performed simultaneously, at this time, the first terminal device may determine that the second terminal device forwards the paging message, and forward the paging message to the second terminal device.
  • S403a reference may be made to the foregoing examples, and details are not repeated here.
  • the first terminal device forwards the paging to the second terminal device according to the first information.
  • the first terminal device may determine the remaining PDBs for forwarding the paging according to the PDB for forwarding the paging or the delay requirement, and forward the paging to the second terminal device according to the remaining PDBs for forwarding the paging.
  • the first terminal device may determine the remaining PDBs for forwarding the paging according to the PDBs for forwarding the paging, and forward the paging to the second terminal device according to the remaining PDBs for forwarding the paging.
  • the remaining PDB can be determined to be 1 ms according to the paging buffering time of the first terminal device, for example, 1 ms. Therefore, the first terminal device can forward the paging page to the second terminal device within 1 ms. call.
  • the first terminal device may determine the remaining delay requirement for forwarding the paging according to the delay requirement for forwarding the paging, and forward the paging to the second terminal device according to the remaining delay requirement for forwarding the paging .
  • the remaining delay requirement may be determined based on the delay requirement for forwarding paging and the capability of the first terminal device to forward paging. After determining the remaining delay requirement, the first terminal device may The delay requirement is met, and the paging is forwarded to the second terminal device.
  • the first terminal device determines, according to the first information, the sidelink resources for the first terminal device to forward paging to the second terminal device.
  • the first terminal device may use the SL resource to forward the paging to the second terminal device.
  • For the content of forwarding paging reference may be made to at least one of S403-1 to S403-4 in FIG. 4B , which will not be repeated here.
  • the first terminal device determines the sidelink resources used by the first terminal device to forward the paging to the second terminal device according to the PDB or delay requirement for forwarding the paging.
  • the first terminal device determines SL resources for forwarding paging to the second terminal device according to the PDB or delay requirements for forwarding paging.
  • the first terminal device may receive multiple pages to be forwarded by the second terminal device.
  • the first terminal device may perform a logical channel priority processing procedure (logical channel priority Determine one SL resource for forwarding the paging to one of the second terminal devices according to the PDB or delay requirement of paging corresponding to the paging of the multiple second terminal devices.
  • a logical channel priority processing procedure logical channel priority Determine one SL resource for forwarding the paging to one of the second terminal devices according to the PDB or delay requirement of paging corresponding to the paging of the multiple second terminal devices.
  • the first terminal device determines the remaining PDBs for forwarding paging according to the PDB or delay requirements for forwarding paging, and selects SL resources according to the remaining PDBs for forwarding paging.
  • the side link resource used by the second terminal device to forward the paging.
  • the first terminal device After receiving the paging of the second terminal device sent by the base station, the first terminal device selects sidelink resources for forwarding the paging to the second terminal device.
  • the SL resource selected by the first terminal device satisfies the remaining PDB for forwarding paging, for example, the time domain position of the SL resource selected by the first terminal device is earlier than or equal to the current time domain position plus the remaining PDB.
  • the sidelink grant (SL grant) resources selected by the first terminal device cannot satisfy the remaining PDBs for forwarding paging, then clear the selected SL grant, and/or, trigger the selection of sidelink resources or re-election.
  • SL grant sidelink grant
  • the first terminal device can configure the PDB or delay requirement for forwarding paging through the base station, or pre-defined PDB or delay requirement for forwarding paging, and obtain the PDB or delay requirement for forwarding paging, the first terminal The device forwards paging to the second terminal device according to the PDB or delay requirements of forwarding paging, or the first terminal device selects SL resources according to the PDB or delay requirements of forwarding paging, so as to ensure the paging of the second terminal device The delay in which the call is forwarded meets the requirement of the upper limit of the delay, and the performance of the first terminal device forwarding the paging of the second terminal device is improved.
  • S403b The first terminal device selects sidelink resources according to the first information.
  • the first terminal device selects the sidelink resource after receiving the paging of the second terminal device sent by the base station. Specifically, the first terminal device may determine side link resources according to the PDB or delay requirements for forwarding paging, where the side link resources may be used for forwarding paging to the second terminal device, or for Sending other messages to the second terminal device may also be used to send messages to other terminal devices.
  • the first terminal device determines remaining PDBs for forwarding paging according to PDBs for forwarding paging or delay requirements, and selects SL resources according to the remaining PDBs for forwarding paging.
  • the SL resource selected by the first terminal device satisfies the remaining PDB for forwarding paging, for example, the time domain position of the SL resource selected by the first terminal device is earlier than or equal to the current time domain position plus the remaining PDB.
  • the sidelink grant (SL grant) resources selected by the first terminal device cannot satisfy the remaining PDBs for forwarding paging, then clear the selected SL grant, and/or, trigger the selection of sidelink resources or re-election.
  • SL grant sidelink grant
  • the selected sidelink resource helps to ensure the time delay of the message sent to the second terminal, and improves the performance of the first terminal device forwarding the message of the second terminal device.
  • S403a and S403b may be executed, or may be executed separately in different scenarios, which is not limited here.
  • a core network element for example, AMF
  • the remote terminal device may be in an inactive state, and the access network device (for example, the last serving base station) or the anchor point access network device (for example, the anchor point base station) that the remote terminal device accesses last can be based on The context of the remote terminal equipment determines the paging priority and sends the paging priority to other base stations.
  • An access network device (for example, a base station) can page the remote terminal device UE according to the paging priority, for example, the high-priority paging is preferentially transmitted in the paging occasion.
  • the relay terminal device forwards paging to the remote terminal device, the paging priority configured by the network device cannot be taken into consideration, which may result in that high-priority paging is not preferentially forwarded.
  • a communication method in which the base station indicates the priority of forwarding paging to the relay terminal device, so that the high priority paging can be preferentially forwarded.
  • FIG. 5 it is a flow chart of a communication method provided by the embodiment of the present application. Take this method applied to the network architectures shown in FIG. 1 , FIGS. 2A-2B , and FIGS. 3A-3B as an example.
  • the network device described below may be a core network device and/or an access network device serving the first terminal device.
  • the core network device is, for example, an AMF
  • the access network device is, for example, a base station. If the embodiment of the present application is applied to the network architecture shown in FIG.
  • the second terminal device described below may be the terminal device 2 (that is, the remote terminal device) in the network architecture shown in FIG. 1, and the following
  • the first terminal device described herein may be the terminal device 1 (that is, the relay terminal device) in the network architecture shown in FIG. 1 , which specifically includes the following steps:
  • S501 The first terminal device obtains first information.
  • the first information may be used to indicate the priority of forwarding the paging, and in a possible implementation manner in the second example, the first information may include the priority of forwarding the paging.
  • the forwarded paging may be forwarded paging corresponding to the paging sent by the network device to the second terminal device.
  • the first terminal device may obtain the priority of forwarding paging, and the way B1 and the way B2 are used as examples below to illustrate.
  • the first terminal device may obtain the priority of forwarding paging through the manner indicated by the network device.
  • the network device may determine the priority of forwarding the paging in various ways. For example, the network device may, according to the paging index (KPI) of the network, the paging priority (paging priority) of paging of the second terminal device, the side link between the second terminal device and the first terminal device Communication channel status (for example, channel quality, busy or congested condition of the channel), load of the first terminal device, capability of the first terminal device, QoS of the service of the second terminal device, data corresponding to trigger paging of the second terminal device.
  • KPI paging index
  • ARP Priority of Allocation and Retention
  • the network device sends the second indication information.
  • the second indication information is used to indicate the priority of forwarding the paging.
  • the first terminal device receives the second indication information, and determines the priority of forwarding the paging according to the second indication information.
  • the second indication information is carried in any of the following: system information block, radio resource control signaling.
  • the network device may include the second indication information in the RRC dedicated signaling sent to the first terminal device.
  • the network device may include the second indication information in a broadcast signal (for example, a system information block (system information block, SIB)).
  • the network device may include the second indication information in the RRC signaling sent to the UE.
  • the network device may include the second indication information in the RRC dedicated signaling sent to the first terminal device.
  • the core network device sends the second indication information to the first terminal device.
  • the core network device includes the second indication information in non-access stratum (Non-access stratum, NAS) signaling.
  • Non-access stratum Non-access stratum
  • the network device can send the paging and the second indication information at the same time, or the network device can also send the paging and the second indication information separately, for example, the paging and the second indication information can be sent in the same message , can also be sent in different messages, which is not limited here.
  • the first indication information may also be sent together with the second indication information, or sent separately, which is not limited here.
  • the network device may also carry seventh indication information in the paging of the second terminal device, where the seventh indication information may be used to indicate the priority of forwarding the paging, that is, by sending the paging information to the first terminal device When the device sends paging, it indicates the priority of forwarding paging.
  • the first terminal device may determine the priority of forwarding the paging according to the seventh indication information.
  • the network device can determine the priority of forwarding paging in various ways, and correspondingly, the network device can also send the second indication information or the seventh indication information in various ways, and the following uses modes b1 to b5 as examples for illustration.
  • Mode b1 the priority of forwarding paging is configured based on each second terminal device (for example, per remote UE).
  • a second terminal device corresponds to a priority for forwarding paging. Forwarding the paging by the first terminal device to a second terminal device corresponds to the priority of forwarding the paging corresponding to the second terminal device.
  • the first terminal device receives the second indication information for the second terminal device sent by the network device. At this time, the second indication information may be sent in radio resource control signaling or NAS signaling. In a possible implementation manner, there is a corresponding relationship between the second indication information and the second terminal device.
  • the network device indicates the correspondence between the second indication information and the second terminal equipment, the first terminal equipment determines to forward paging to a first terminal equipment, and determines the second indication information corresponding to the first terminal equipment according to the correspondence relationship, and according to the first terminal equipment
  • the two indication information determine the priority of forwarding the paging.
  • the priority of forwarding paging may be determined by the network device based on the service of the second terminal device or based on the capability of the second terminal device or the capability of the first terminal device, and the network device may determine that the first terminal device is the second terminal device When the device provides relay service, it determines the priority of forwarding paging.
  • the priority of forwarding the paging may be updated.
  • the priority of forwarding the paging may be updated.
  • the network device may establish a corresponding relationship between the identifier of the second terminal device and the priority of forwarding the paging.
  • the second indication information may be determined with reference to the manner of configuring the first indication information based on each second terminal device in manner a1.4, and details are not repeated here.
  • Mode b2 The priority of forwarding paging is configured based on the transmission resource used for forwarding paging.
  • the transmission resource includes one of the sidelink radio bearer, the sidelink logical channel, and the MAC CE on the sidelink.
  • the priority of forwarding paging is configured for the sidelink SRB used for forwarding paging, or the priority of forwarding paging is configured for the MAC CE on the sidelink used for forwarding paging.
  • the first terminal device determines the priority of forwarding the paging corresponding to the sidelink radio bearer or the sidelink logical channel.
  • the second indication information may be sent in a system information block, NAS signaling or radio resource control signaling.
  • the first terminal device receives the sidelink radio bearer configuration or the sidelink logical channel configuration sent by the network device, and the second indication information may be included in the sidelink radio bearer configuration or the sidelink logical channel configuration. In the logical channel configuration.
  • the first terminal device determines the configuration of the sidelink radio bearer or the configuration of the sidelink logical channel used for forwarding the paging, which includes second indication information, and determines the priority of forwarding the paging according to the second indication information.
  • the network device indicates the correspondence between the second indication information and the sidelink radio bearer or the sidelink logical channel, and the first terminal device determines the sidelink radio bearer or the sidelink logical channel used to forward the paging,
  • the second indication information corresponding to the sidelink radio bearer or the sidelink logical channel is determined according to the corresponding relationship, and the priority of forwarding the paging is determined according to the second indication information.
  • the network device determines the corresponding relationship between the sidelink radio bearer or the sidelink logical channel and the priority of forwarding paging, and the network device forwards the paging according to the sidelink used by the first terminal device.
  • link radio bearer or side link logical channel determine the priority of forwarding paging corresponding to the side link radio bearer or side link logical channel, and send a message indicating the priority of forwarding paging to the first terminal device The second instruction message for .
  • the MAC CE on the sidelink used for forwarding the paging has a corresponding priority for forwarding the paging.
  • the first terminal device determines the priority of forwarding paging corresponding to the MAC CE on the sidelink according to the MAC CE on the sidelink used for forwarding the paging.
  • the second indication information may be sent in a system information block, NAS signaling or radio resource control signaling.
  • the network device indicates the correspondence between the second indication information and the MAC CE on the side link, and the first terminal device determines the second indication information corresponding to the MAC CE on the side link used for forwarding paging according to the correspondence, according to The second indication information determines the priority of forwarding the paging.
  • the network device determines the corresponding relationship between the MAC CE on the side link and the priority of forwarding paging, and the network device forwards the paging according to the MAC on the side link used by the first terminal device.
  • the CE determines the priority of forwarding paging corresponding to the MAC CE on the sidelink, and sends second indication information indicating the priority of forwarding paging to the first terminal device.
  • Mode b3 The priority of forwarding paging is configured based on per paging or per paging message.
  • one paging corresponds to one paging forwarding priority, that is, the relay terminal device needs to apply the paging forwarding priority when forwarding the paging.
  • a paging message corresponds to a paging forwarding priority, that is, the paging forwarding priority needs to be applied when the first terminal device forwards the paging in the paging message.
  • the priorities of forwarding pages corresponding to different paging may be different.
  • the priorities of forwarding paging corresponding to different paging messages may be different.
  • the network device may carry seventh indication information indicating the priority of forwarding the paging in the paging of the second terminal device.
  • the network device may carry seventh indication information indicating the priority of forwarding the paging in the signaling where the paging of the second terminal device is located.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), and each paging record includes The identity of the paged terminal equipment (UE-Identity, UE ID).
  • the paging record of the second terminal device means that the terminal identifier (UE-Identity, UE ID) in the paging record is the identifier of the second terminal device.
  • Some paging records also include seventh indication information.
  • the first terminal device determines that the identifier of the terminal device in the paging record is the identifier of the second terminal device, and determines the priority according to the seventh indication information in the paging record.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), and each paging record Contains the ID of the end device being paged.
  • the paging message also includes one or more seventh indication information, each seventh indication information has a corresponding relationship with a paging record, and the first terminal device determines that the identifier of the terminal device in the paging record is that of the second terminal device. identify, determine the seventh indication information corresponding to the paging record according to the corresponding relationship, and determine the priority according to the seventh indication information.
  • the paging of the second terminal device is a paging message for paging the second terminal device, and the paging message includes one or more paging records (PagingRecord), each paging record Contains the ID of the end device being paged.
  • the paging message also includes seventh indication information, and one or more paging records in the paging message correspond to the seventh indication information.
  • the first terminal device determines that the identifier of the terminal device in the paging record in the paging message is the identifier of the second terminal device, and determines the priority according to the seventh indication information in the paging message.
  • the base station may configure the priority of forwarding paging only for the second terminal device or only for the second terminal device receiving paging through the first terminal device.
  • the network device determines that the second terminal device corresponding to the paging is the remote terminal device, it determines to send the second indication information or the seventh indication information to the first terminal device.
  • the manner in which the network device determines that the second terminal device to be paged is a remote terminal device may be: determining that the terminal device is a remote terminal device according to the capability or identity of the second terminal device, or determining that the terminal device supports L2 relay
  • the remote terminal device or, determine that the terminal device is a UE capable of serving as a remote terminal device, or determine that the terminal device is a UE capable of serving as a remote terminal device supporting L2 relay, or determine that the terminal device is a A UE that (possibly) receives a forwarded page.
  • the network device here may be a core network element (for example, AMF), or a last serving base station (last serving gNB) or an anchor base station (anchor gNB) of a remote terminal device.
  • manner b4 may be combined with manner b1 to manner b3, and is used for the network device to execute any one of manner b1 to manner b3 when determining that the second terminal device is a remote terminal device. For example, when the network device determines that the second terminal device is a remote terminal device, it may send the second indication information or the seventh indication information to the first terminal device, so that the first terminal device obtains the forwarded paging information of the remote terminal device. priority.
  • the core network element for example, AMF
  • the core network element determines that the paged UE is a remote terminal device
  • the eighth indication information is used to indicate that the terminal device is a remote terminal device, or that the terminal device is a remote terminal device supporting L2 relay, or that the terminal device is a UE capable of serving as a remote terminal device, or , the terminal device is a UE capable of serving as a remote terminal device supporting L2 relay, or the terminal device is a UE that (possibly) receives forwarded paging.
  • the eighth indication information may be included in the paging message sent by the core network element to the access network device.
  • the network element of the core network that sends the eighth indication information may be a network device serving the second terminal device, and the network device may be a different network device from the network device that sends the second indication information or the seventh indication information , can also be the same network device, which is not limited here.
  • the access network device After receiving the indication, the corresponding paging information and the eighth indication information, the access network device (for example, base station) may send the second indication information or the seventh indication information to the first terminal device for the paging.
  • the access network device may not send the second indication information or the seventh indication information for the paging.
  • the UE's last serving base station (last serving gNB) or UE's anchor base station (anchor gNB) can be the base station that stores the UE context of the UE, or it can be the base station that finally releases the UE to the RRC
  • the base station in the active state for example, releases the UE from the RRC connected state to the base station in the RRC inactive state.
  • the UE's last serving base station (last serving gNB) or UE's anchor base station (anchor gNB) pages the remote terminal equipment, and may also send RAN paging ( For example, XnAP RAN Paging), the neighboring base station or the current serving base station of the UE or the new serving base station of the UE is used for paging the remote terminal equipment.
  • the last serving access network device (last serving base station) or anchor access network device (anchor base station) of the remote terminal device may determine that the paged UE is the remote terminal device.
  • the access network device last accessed by the remote terminal device may determine that the second terminal device is the remote terminal device based on the second terminal device accessed.
  • the specific determination method may be: according to the capability or indication of the second terminal Determining that the second terminal device is a remote terminal device, or determining that the second terminal device is a remote terminal device supporting L2 relay, or determining that the second terminal device is a UE capable of serving as a remote terminal device, or , determining that the second terminal device is a UE capable of serving as a remote terminal device supporting L2 relay, or determining that the second terminal device is (or may be) a UE that receives forwarded paging.
  • the access network device that the remote terminal device accesses After the access network device that the remote terminal device accesses last determines that the second terminal device is the remote terminal device, it may send the second indication information or the seventh indication information to the first terminal device for paging of the terminal device. Correspondingly, after determining that the terminal device is not a remote terminal device, the access network device may not send the second indication information or the seventh indication information for the paging of the terminal device.
  • the access network device (the last serving base station) that the remote terminal device finally accesses or the anchor base station (anchor gNB) of the UE may also send a message to other access network devices (for example, other than the last serving base station) base station, adjacent base station, UE's current serving base station or UE's new serving base station) sends the eighth indication information, and other access network devices receive the eighth indication information and the paging corresponding to the terminal equipment, other access network devices
  • the network device may send the second indication information or the seventh indication information to the first terminal device.
  • the access network device may determine not to send the second indication information or the seventh indication information for the paging.
  • the priority of forwarding paging may be a default value.
  • the default value may be a default paging forwarding priority value configured by the network device.
  • the network device configures the default way of forwarding the delay information of paging, or it can refer to the way b1 or way b2 to determine the priority of forwarding paging, and determine the default priority of forwarding paging .
  • the priority of forwarding paging determined in mode b1 or b2 may also be used as the default priority of forwarding paging, for example, the default priority of forwarding paging may be determined based on each second terminal device , can also be determined based on the resources of each paging.
  • manner b5 may be combined with any one of manners b1 to b3.
  • the first terminal device may determine the paging forwarding priority corresponding to the paging of the second terminal device according to the default value, that is, The paging of the second terminal device corresponds to the default paging forwarding priority.
  • the priority for forwarding pages can be pre-configured.
  • the side link pre-configuration includes indication information of the priority of forwarding paging.
  • the sidelink pre-configuration may be pre-configured in a mobile equipment (mobile equipment, ME), or configured in a universal integrated circuit card (Universal Integrated Circuit Card, UICC).
  • the priority for forwarding pages is pre-defined, eg, specified in a standard protocol.
  • the priority relationship with the priority of other services can be set. For example, if the priority of service 1 is higher than the priority of forwarding paging, you can set The priority of the first terminal device for forwarding the message of service 1 is priority 1, and the priority of forwarding the paging is priority 2, and priority 1 is greater than priority 2. If the priority of service 1 is lower than the priority of forwarding paging, you can set the priority of the first terminal device to forward the message of service 1 as priority 3, and the priority of forwarding paging as priority 4, and priority 4 is greater than priority 3.
  • the priority of forwarding paging can be configured for the radio bearer (PC5 SRB) used for forwarding paging, or the PC5 radio link control (radio link control, RLC) bearer (bearer) used for forwarding paging configured, or configured for the MAC CE on the sidelink used to forward paging.
  • resource priority can be configured.
  • the priority of the resource can be used as the priority of forwarding paging. For example, after confirming that the priority of radio bearer (PC5 SRB) 1 is Priority 1, and when the forwarded paging 1 is sent using the radio bearer (PC5 SRB) 1, it can be confirmed that the forwarded paging priority of the forwarded paging 1 is priority 1.
  • the priority of forwarding paging can be configured for the logical channel on the sidelink used for forwarding paging.
  • each The logical channel configuration on each side link can correspond to the corresponding priority. Therefore, after determining the logical channel configuration on the side link selected by forwarding paging, based on the logical channel configuration on each side link to determine the priority of forwarding paging.
  • the priority of forwarding paging may also be determined with reference to mode b2 or mode b5 in mode B1.
  • the difference from mode B1 is that the priority of forwarding paging in mode B2 is not configured by the network device, but pre-configured or predefined.
  • the second indication information may be included in the pre-configuration, or the second indication information is predefined, for example, stipulated in a standard protocol.
  • the first terminal device determines the priority of forwarding the paging according to the second indication information.
  • the transmission resource configuration used for paging forwarding is pre-configured or pre-defined.
  • the correspondence between the second indication information and the transmission resources used for forwarding paging is preconfigured or predefined.
  • the default paging forwarding priority is pre-configured or predefined.
  • the pre-configured or pre-defined default priority for forwarding paging may be combined with any one of modes b1 to b4 in B1.
  • the first terminal device may determine the forwarding page corresponding to the paging of the second terminal device according to the default paging forwarding priority.
  • the paging priority that is, the corresponding paging forwarding priority when the first terminal device forwards the paging to the second terminal device is the default paging forwarding priority.
  • the first terminal device determines the priority of forwarding the paging corresponding to the paging of the second terminal device according to the first indication information or the sixth indication information.
  • the first terminal device receives paging from the second terminal device of the network device.
  • the order of S501 and S502 is not limited, and S501 and S502 may also be simultaneous.
  • the base station sends the second indication information and the paging information of the second terminal device to the first terminal device in the same signaling. .
  • the base station includes the second indication information in the paging of the second terminal device sent to the first terminal device. For details, refer to manner b5, which will not be repeated here.
  • S503a The first terminal device forwards the paging to the second terminal device.
  • the first terminal device forwards the paging to the second terminal device after receiving the paging of the second terminal device sent by the base station.
  • forwarding paging may be at least one of the following: a paging message, or fifth indication information.
  • the fifth indication information is used to indicate that the second terminal device is paged.
  • the first terminal device forwards the paging to the second terminal device according to the first information.
  • the first terminal device may forward the paging to the second terminal device according to the priority of forwarding the paging.
  • the higher the priority of the forwarded paging the forwarded paging may be preferentially transmitted.
  • a smaller value of the priority corresponds to a higher priority, or a larger value of the priority corresponds to a higher priority.
  • the first terminal device when the first terminal device receives 3 pages to be forwarded, at this time, the first terminal device can determine the order of forwarding according to the priorities of the 3 pages to be forwarded, and forward the 3 pages to be forwarded according to the forwarding order. paging.
  • the first terminal device may determine the sidelink resources for forwarding paging according to the three priorities of the paging to be forwarded, and the sidelink resources used for forwarding paging with high priority are earlier than those with low priority. The sidelink resources used by the forwarded paging.
  • the first terminal device determines the sidelink resources for the first terminal device to forward the paging to the second terminal device according to the priority of forwarding the paging.
  • the first terminal device forwards the paging to the second terminal device using the sidelink resource.
  • the first terminal device may receive the paging priority of the paging message. Furthermore, according to the priority of forwarding the paging, determine the SL resource, and use the SL resource to forward the paging to the second terminal device corresponding to the priority of forwarding the paging.
  • the first terminal device When the first terminal device selects a terminal device to send a message for an SL grant, the first terminal device can determine that the SL grant is used to forward paging to the second terminal device according to the priority of forwarding paging, and use the SL grant The grant forwards the paging to the second terminal device. In a possible implementation manner, if the priority of paging to be forwarded to the second terminal device is higher than the priority of sending messages to other terminals, the relay terminal determines that the SL grant is used to forward the paging to the second terminal device.
  • the relay terminal determines that the SL grant is used to forward the paging to the second terminal device. call.
  • the first terminal device receives two forwarded pages to be forwarded, for example, forwarded page 1 and forwarded page 2, forwarded page 1 is used to forward to the second terminal device 1, forwarded page 2 is used to forward The second terminal device 2 forwards.
  • the first terminal device can determine the forwarding target of the SL resource according to the forwarding priority of forwarding paging 1 and forwarding paging 2, for example, the forwarding priority of forwarding paging 1 is higher than the forwarding priority of forwarding paging 2 , then the first terminal device determines that the SL grant is used to forward paging 1 to the second terminal device 1.
  • the first terminal device selects a terminal device to send a message for an SL grant, it can determine that the SL grant is used to forward the message to the second terminal device according to the priority of the logical channel on the sidelink used to forward the paging paging.
  • the relay terminal determines that the SL grant is used to forward the paging to the second terminal device.
  • the relay terminal determines that the SL grant is used to forward the paging to the second terminal device.
  • the priority of the logical channels on the sidelink for forwarding the paging is determined according to the priority of forwarding the paging.
  • the priority of the logical channels on the sidelink used to forward paging is the priority of forwarding paging.
  • the first terminal device determines the priority of the paging to be forwarded according to the corresponding relationship between the priority of the logical channel on the side link used for forwarding the paging and the priority of forwarding the paging, and the priority of the paging to be forwarded.
  • the priority of the logical channel on the sidelink may be configured by the base station or defined in a standard protocol, which is not limited here.
  • the first terminal device can configure the priority of forwarding paging through the base station, or the priority of forwarding paging defined in advance, and obtain the priority of forwarding paging, so that the first terminal device can Priority, to forward paging to the second terminal device, or, the first terminal device performs the LCP process according to the priority of forwarding the paging, to ensure that the paging of the second terminal device with high priority can be forwarded preferentially.
  • S503b The first terminal device determines sidelink resources according to the first information.
  • the first terminal device may determine side link resources according to the priority of forwarding paging, where the side link resource may be a side link for forwarding paging sent to the second terminal device
  • the resources may also be sidelink resources used to send other messages to the second terminal device. For a specific determination method, reference may be made to method c2, which will not be repeated here.
  • the selected side link resource helps to ensure the forwarding priority of the message sent to the second terminal, and improves the performance of the first terminal device forwarding the message of the second terminal device.
  • S503a and S503b may be executed, or may be executed separately in different scenarios, which is not limited here.
  • FIG. 6 it is a flow chart of a communication method provided by the embodiment of the present application.
  • the network device described below may be a core network device and/or an access network device serving the first terminal device.
  • the core network device is, for example, an AMF
  • the access network device is, for example, a base station.
  • the second terminal device described below may be the terminal device 2 (for example, a remote terminal device) in the network architecture shown in FIG. 1
  • the first terminal device described herein may be the terminal device 1 (for example, a relay terminal device) in the network architecture shown in FIG. 1 .
  • the first terminal device obtains first information.
  • the first information is used to indicate: delay information of forwarding paging and priority of forwarding paging.
  • delay information of forwarding paging and priority of forwarding paging.
  • the first terminal device receives paging from the second terminal device of the network device.
  • S603a The first terminal device forwards the paging to the second terminal device.
  • forwarding the paging may be any of the following: a paging message, or fifth indication information, where the fifth indication information is used to indicate that the second terminal device is paged.
  • the first terminal device forwards the paging to the second terminal device according to at least one of the PDB or delay requirement for forwarding the paging, and the priority for forwarding the paging.
  • the first terminal device determines the remaining PDBs for forwarding the paging according to the PDB for forwarding the paging or the delay requirement, and forwards the paging to the second terminal device according to the remaining PDBs for forwarding the paging.
  • PDB for forwarding the paging or the delay requirement
  • the first terminal device forwards the paging to the second terminal device according to the priority of forwarding the paging.
  • the manner d1 which will not be repeated here.
  • the first terminal device determines the remaining PDBs for forwarding paging according to the PDBs for forwarding paging or the delay requirement, and forwards the paging to the second terminal device according to the remaining PDBs for forwarding paging and the priority of forwarding paging.
  • the remaining PDBs for forwarding paging according to the PDBs for forwarding paging or the delay requirement, and forwards the paging to the second terminal device according to the remaining PDBs for forwarding paging and the priority of forwarding paging.
  • the first terminal device determines the sidelink for forwarding paging between the first terminal device and the second terminal device according to at least one of the PDB or delay requirement for forwarding paging and the priority of forwarding paging resource.
  • the first terminal device may use the SL resource to forward the paging to the second terminal device.
  • the first terminal device determines sidelink resources for forwarding paging between the first terminal device and the second terminal device according to the PDB or delay requirements for forwarding paging.
  • the first terminal device may use the SL resource to forward the paging to the second terminal device.
  • manner c2.1 which will not be repeated here.
  • the first terminal device determines the paging sidelink resources of the second terminal device according to the priority of forwarding the paging and the packet delay budget of the forwarding paging. Alternatively, the first terminal device determines the paging sidelink resource of the second terminal device according to the priority of forwarding the paging and the delay requirement of the forwarding paging. The first terminal device may use the SL resource to forward the paging to the second terminal device.
  • the first terminal device may first determine the forwarded paging to be forwarded according to the priority of the forwarded paging, and then determine the packet delay budget or The delay requirement for forwarding paging is to select side link resources.
  • the packet delay budget For a specific implementation manner, refer to mode c2.1 and mode d2, or a combination of mode c2.1 and mode d2.
  • the first terminal device determines the remaining paging time of the second terminal device according to the priority of forwarding paging, the packet delay budget of forwarding paging, or the delay requirement of forwarding paging Packet delay budget: the first terminal device selects sidelink resources according to the remaining packet delay budget of paging of the second terminal device. The first terminal device may use the SL resource to forward the paging to the second terminal device.
  • the forwarded paging to be forwarded can be determined first according to the priority of the forwarded paging, and then according to the determined forwarded paging to be forwarded, the packet delay budget of the forwarded paging corresponding to the forwarded page or the forwarded paging
  • the paging delay requirement determines the paging remaining packet delay budget of the second terminal device; the first terminal device selects sidelink resources according to the second terminal device's paging remaining packet delay budget.
  • manners c2.2 and d2 which will not be repeated here.
  • the first terminal device can configure the PDB or delay requirement for forwarding paging through the base station, or pre-defined PDB or delay requirement for forwarding paging, and obtain the PDB or delay requirement for forwarding paging.
  • the first terminal device may obtain the priority of paging forwarding through configuring the priority of paging forwarding by the base station, or pre-defining the priority of paging forwarding.
  • the first terminal device forwards the paging to the second terminal device according to the PDB or delay requirement of forwarding paging and the priority of forwarding paging, so as to ensure that the paging delay of the second terminal device is forwarded to meet the delay
  • the requirement of the upper limit can also ensure that the paging of the second terminal device with high priority can be forwarded preferentially, and improve the performance of the first terminal device forwarding the paging of the second terminal device.
  • S603b The first terminal device determines sidelink resources according to the first information.
  • the first terminal device may determine sidelink resources according to at least one of the PDB for forwarding paging, delay requirements, and forwarding priorities, where the sidelink resources may be used to send to the second
  • the sidelink resources sent by the terminal device to forward the paging may also be the sidelink resources used to send other messages to the second terminal device.
  • S403b or S503b which will not be repeated here.
  • the selected side link resources help to ensure the delay and forwarding priority of the message sent to the second terminal, and improve the performance of the relay terminal device forwarding the message of the second terminal device.
  • S603a and S603b may be executed, or may be executed separately in different scenarios, which is not limited here.
  • FIG. 7 it is a flow chart of a communication method provided by the embodiment of the present application.
  • this method is applied to the network architecture shown in FIG. 1 , FIGS. 2A-2B , and FIGS. 3A-3B .
  • FIG. 7 it is a flow chart of a communication method provided by the embodiment of the present application. Take this method applied to the network architectures shown in FIG. 1 , FIGS.
  • the network device described below may be a core network device and/or an access network device serving the first terminal device.
  • the core network device is, for example, an AMF
  • the access network device is, for example, a base station.
  • the second terminal device described below may be the terminal device 2 (that is, the remote terminal device) in the network architecture shown in FIG. 1
  • the first terminal device described herein may be the terminal device 1 (that is, the relay terminal device) in the network architecture shown in FIG. 1 . Specifically include the following steps:
  • the first terminal device obtains first information.
  • the first information may include the priority of forwarding the paging
  • the paging may be a paging sent by the network device to the second terminal device.
  • the content of the paging and the manner of sending the paging by the network device reference may be made to the manner in S501, which will not be repeated here.
  • the first terminal device may obtain the priority of forwarding the paging in a manner indicated by the network device (for example, the network device sends the second indication information to the first terminal device).
  • the priority of forwarding paging is pre-defined. For details, refer to the example descriptions of the manner B1 and the manner B2 in reference S501, which will not be repeated here.
  • the network device sends the second indication information.
  • the second indication information is used to indicate the priority of forwarding the paging.
  • the first terminal device receives the second indication information, and determines the priority of forwarding the paging according to the second indication information, that is, the priority of forwarding the paging.
  • the network device may determine the second indication information in various ways, for details, please refer to the illustrations of scenarios 1 to 2, which will not be repeated here.
  • the network device may send the second indication information in various ways, and the network device may include the second indication information in the RRC dedicated signaling sent to the first terminal device.
  • the base station may include the second indication information in the RRC signaling sent to the UE.
  • manner b1 to manner b5 For the specific sending manner, reference may be made to manner b1 to manner b5, which will not be repeated here.
  • the first terminal device determines the delay information of forwarding the paging according to the priority of forwarding the paging.
  • the first terminal device may determine at least one of the PDB for forwarding the paging or the delay requirement according to the priority of forwarding the paging.
  • the first terminal device may determine the paging forwarding delay information corresponding to the paging to be forwarded according to the correspondence between the first information and the priority of forwarding the paging, and the priority of the paging to be forwarded.
  • the first terminal device may establish a correspondence between a PDB for forwarding paging and a priority for forwarding paging, or a correspondence between a delay requirement and a priority for forwarding paging, for example, A paging with a higher priority for forwarding a page may correspond to a smaller PDB for forwarding a page. Paging with low priority for forwarding paging can correspond to a larger PDB for forwarding paging, so as to ensure that high-priority paging can be forwarded preferentially, and ensure that the paging delay of the second terminal device is forwarded to meet Latency requirements.
  • the first terminal device may determine the corresponding PDB for forwarding the page based on the correspondence between the PDB for forwarding the page and the priority for forwarding the page, that is, the priority for forwarding the page.
  • the first terminal device may determine the corresponding delay requirement for forwarding paging based on the corresponding relationship between the delay requirement for forwarding paging and the priority for forwarding paging, that is, the priority for forwarding paging .
  • the above-mentioned correspondence between the PDB for forwarding paging and the priority of forwarding paging, or the correspondence between the delay requirement and the priority of forwarding paging may be configured by the base station, or may be It is defined in the standard protocol and is not limited here.
  • the network device can also configure a default delay information for forwarding paging (PDB or delay requirement for forwarding paging), or, the default PDB or delay requirement for forwarding paging is Predefined, for example, is preconfigured, or specified in a standard protocol.
  • PDB delay information for forwarding paging
  • the first terminal device may use the default PDB/delay requirement for forwarded paging as the forwarded paging corresponding to the forwarded paging PDB or latency requirements for paging.
  • the first terminal device receives paging from the second terminal device of the network device.
  • S702 and S703 is not limited, and the order of S701 and S703 is not limited. S702 and S703 may also be simultaneous, and S701 and S703 may also be simultaneous.
  • the base station sends the second indication information and the paging of the second terminal device to the first terminal device in the same signaling.
  • the base station includes the second indication information in the paging of the second terminal device sent to the first terminal device. For details, refer to mode a5, which will not be repeated here.
  • S704a The first terminal device forwards the paging to the second terminal device.
  • the first terminal device may forward the paging to the second terminal device according to the paging forwarding delay information. That is, the first terminal device forwards the paging to the second terminal device according to the delay information of forwarding the paging.
  • the paging forwarding may be any of the following: paging message, fifth indication information.
  • the first terminal device forwards the paging to the second terminal device according to the PDB or delay requirement for forwarding the paging.
  • the first terminal device determines the remaining PDBs for forwarding the paging according to the PDB for forwarding the paging or the delay requirement, and forwards the paging to the second terminal device according to the remaining PDBs for forwarding the paging.
  • mode c1 which will not be repeated here.
  • the first terminal device determines sidelink resources for paging forwarding between the first terminal device and the second terminal device according to the delay information of paging forwarding.
  • the first terminal device may use the SL resource to forward the paging to the second terminal device.
  • the first terminal device may determine sidelink resources for forwarding paging between the first terminal device and the second terminal device according to the PDB or delay requirements for forwarding paging.
  • the first terminal device determines the remaining PDBs for forwarding paging according to the PDBs for forwarding paging or the delay requirement, and selects SL resources according to the remaining PDBs for forwarding paging.
  • the first terminal device may use the SL resource to forward the paging to the second terminal device.
  • the SL resource selected by the first terminal device satisfies the remaining PDB for forwarding paging, that is, the time domain position of the selected SL resource is earlier than or equal to the current time domain position plus the remaining PDB.
  • the sidelink grant (SL grant) resources selected by the first terminal device cannot satisfy the remaining PDBs for forwarding paging, then clear the selected SL grant, and/or, trigger the selection of sidelink resources or re-election.
  • the first terminal device may receive pages to be forwarded by multiple second terminal devices. At this time, the first terminal device may use the SL resource corresponding to each second terminal device in the LCP to send The second terminal forwards the page.
  • the first terminal device may forward the paging to the second terminal device according to the paging forwarding delay information and the paging forwarding priority. For example, the first terminal device may forward the paging to the second terminal device according to the priority of forwarding the paging, the PDB for forwarding the paging, or the delay requirement. Wherein, after receiving the paging of the second terminal device sent by the base station, the first terminal device may determine to forward the paging to the second terminal device according to the paging.
  • the first terminal device may receive the paging sent by the network device to the second terminal device, the priority of the forwarded paging corresponding to the paging, and the priority of the forwarded paging corresponding to the paging. PDB or delay requirements, determine forwarding paging. Furthermore, after it is determined to forward the paging, the forwarded paging is sent to the second terminal device. For specific implementation manners, reference may be made to manner c2 and manner d2, which will not be repeated here.
  • the high-priority paging can be preferentially forwarded, and at the same time, the time delay for the paging of the second terminal device to be forwarded can be guaranteed.
  • the first terminal device may determine the PDB or delay requirement for forwarding paging according to the priority of forwarding paging, so that the base station does not need to indicate the PDB or delay requirement for forwarding paging.
  • S704b The first terminal device selects sidelink resources according to the first information.
  • the first terminal device may determine the sidelink resource according to the PDB or delay requirement of forwarding the paging, where the sidelink resource may be the forwarding paging used to send to the second terminal device
  • the sidelink resource for the call may also be the sidelink resource for sending other messages to the second terminal device.
  • the first terminal device may also determine sidelink resources according to the PDB or delay requirement of forwarding paging and the priority of forwarding paging, for details, refer to the implementation in S403b, S503b or S603b , which will not be repeated here.
  • the selected sidelink resource helps to ensure the time delay of the message sent to the second terminal, and improves the performance of the first terminal device forwarding the message of the second terminal device.
  • S704a and S704b may be executed, or may be executed separately in different scenarios, which is not limited here.
  • FIG. 8 it is a flow chart of a communication method provided by the embodiment of the present application.
  • this method is applied to the network architecture shown in FIG. 1 , FIGS. 2A-2B , and FIGS. 3A-3B .
  • FIG. 8 it is a flow chart of a communication method provided by the embodiment of the present application. Take this method applied to the network architectures shown in FIG. 1 , FIGS. 2A-2B , and FIGS.
  • the network device described below may be a core network device and/or an access network device serving the first terminal device.
  • the core network device is, for example, an AMF
  • the access network device is, for example, a base station.
  • the second terminal device described below may be the terminal device 2 (that is, the remote terminal device) in the network architecture shown in FIG. 1
  • the first terminal device described herein may be the terminal device 1 (that is, the relay terminal device) in the network architecture shown in FIG. 1 . Specifically include the following steps:
  • the first terminal device obtains first information.
  • the first information may include delay information for forwarding paging
  • the delay information for forwarding paging may include at least one of the following: the value of packet delay budget for forwarding paging (PDB for forwarding paging), The range interval of the PDB for paging, the maximum or minimum value of the PDB for forwarding paging, the value of the delay requirement for forwarding paging, the range interval for the delay requirement for forwarding paging, and the delay requirement for forwarding paging maximum or minimum value, etc.
  • PDB packet delay budget for forwarding paging
  • the range interval of the PDB for paging The range interval of the PDB for paging, the maximum or minimum value of the PDB for forwarding paging, the value of the delay requirement for forwarding paging, the range interval for the delay requirement for forwarding paging, and the delay requirement for forwarding paging maximum or minimum value, etc.
  • the first terminal device may obtain the delay information of forwarding paging through the way indicated by the network device (for example, sending the first indication information).
  • the PDB or delay requirement for forwarding paging can be preset.
  • the first terminal device determines the priority of forwarding the paging according to the delay information of forwarding the paging.
  • the first terminal device determines the priority of forwarding the paging according to at least one item of the PDB for forwarding the paging or the delay requirement.
  • the first terminal device may determine the paging to be forwarded according to the corresponding relationship between the delay information of the forwarded paging and the priority of the forwarded paging, and the delay information of the forwarded paging corresponding to the paging to be forwarded. priority.
  • the corresponding relationship between the delay information of forwarding paging and the priority of forwarding paging may be configured by the base station or defined in a standard protocol, which is not limited here.
  • the first terminal device may determine the priority of paging forwarding according to the corresponding relationship between the PDB to forward the paging and the priority of paging forwarding, and the PDB to forward the paging.
  • the first terminal device may determine the priority of forwarding the paging according to the corresponding relationship between the delay requirement for forwarding the paging and the priority of forwarding the paging, and the delay requirement for the paging to be forwarded.
  • the corresponding relationship may be configured by the base station, or defined in a standard protocol.
  • the base station may also configure a default priority for forwarding paging, or the default priority for forwarding paging is predefined, for example, pre-configured, or specified in a standard protocol.
  • the first terminal device may use the default priority of forwarding paging as the priority of forwarding paging, that is, the priority of forwarding paging is the default priority of forwarding paging. priority.
  • the first terminal device receives paging from the second terminal device of the network device.
  • the order of S801 and S802 is not limited, and S801 and S802 may also be simultaneous.
  • the base station sends the first indication information and the paging information of the second terminal device to the first terminal device in the same signaling. .
  • the base station includes the first indication information in the paging of the second terminal device sent to the first terminal device.
  • manner b5 which will not be repeated here.
  • S402 which will not be repeated here.
  • S804a The first terminal device forwards the paging to the second terminal device according to the first information.
  • the first terminal device after receiving the paging of the second terminal device sent by the base station, the first terminal device forwards the paging to the second terminal device.
  • forwarding the paging may be any of the following: a paging message, or indication information for indicating that the second terminal device is paged.
  • S804a may be implemented in multiple manners, and the manner g1 and the manner g2 are used as examples below to illustrate.
  • the first terminal device forwards the paging to the second terminal device according to the paging forwarding priority.
  • the higher the priority of the forwarded paging the forwarded paging may be preferentially transmitted.
  • a smaller value of the priority corresponds to a higher priority, or a larger value of the priority corresponds to a higher priority.
  • the first terminal device forwards the paging to the second terminal device according to the priority of forwarding the paging and the delay information of forwarding the paging.
  • the manner d1, e1 or manner f1 which will not be repeated here.
  • the first terminal device determines sidelink resources for forwarding paging between the first terminal device and the second terminal device according to the priority of forwarding paging.
  • the first terminal device uses the SL resource to forward the paging to the second terminal device.
  • the first terminal device performs the LCP process according to the priority of forwarding the paging.
  • the first terminal device may receive the paging priority of the paging message.
  • an SL resource is determined according to the priority of forwarding the paging, and the SL resource is used to send the forwarding paging to the second terminal device corresponding to the priority of forwarding the paging. For details, reference may be made to method d2, which will not be repeated here.
  • the first terminal device determines side link resources for paging forwarding between the first terminal device and the second terminal device according to at least one of the paging forwarding priority and paging forwarding delay information.
  • the first terminal device uses the SL resource to forward the paging to the second terminal device. For details, reference may be made to manner d2, e2, or manner f2, which will not be repeated here.
  • the high-priority paging can be forwarded preferentially, and at the same time, the time delay for the paging of the remote UE to be forwarded can be guaranteed.
  • the first terminal device can determine the priority of forwarding paging according to the PDB or delay requirement of forwarding paging, so that the network device does not need to indicate the priority of forwarding paging to the first terminal device, which can reduce the signaling overhead of the network device. overhead.
  • S804b The first terminal device selects sidelink resources according to the first information.
  • the first terminal device may determine side link resources according to the priority of forwarding paging, where the side link resources may be used for forwarding paging sent to the second terminal device.
  • the sidelink resources may also be sidelink resources used to send other messages to the second terminal device. For a specific determination method, reference may be made to S503b, which will not be repeated here.
  • the first terminal device may determine the sidelink resource according to at least one of the priority of forwarding the paging and the delay information of forwarding the paging, where the sidelink resource may be It is a sidelink resource used for forwarding paging sent to the second terminal device, and may also be a sidelink resource used for sending other messages to the second terminal device.
  • the sidelink resource may be It is a sidelink resource used for forwarding paging sent to the second terminal device, and may also be a sidelink resource used for sending other messages to the second terminal device.
  • S603b, S704b, etc. which will not be repeated here.
  • the selected sidelink resource helps to ensure the time delay of the message sent to the second terminal, and improves the performance of the first terminal device forwarding the message of the second terminal device.
  • S804a and S804b may be executed, or may be executed separately in different scenarios, which is not limited here.
  • the network device or the terminal device may include a hardware structure and/or a software module, and realize the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module . Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or physically exist separately, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
  • the present application provides a communication device 900 .
  • the communication apparatus 900 may be a terminal device, or a component in the terminal device, such as a chip.
  • the communications apparatus 900 may be the first terminal device in the foregoing embodiments.
  • the first terminal device may be a relay terminal device.
  • the communication device 900 may include a processing module 910 , a sending module 920 and a receiving module 930 .
  • the receiving module 930 is configured to receive the paging sent from the network device to the second terminal device; the processing module 910 is configured to send the paging to the second terminal device through the sending module 920 according to the first information
  • the device forwards paging or determines sidelink resources, and the first information is used to indicate at least one of the following: a packet delay budget for forwarding paging, a delay requirement for forwarding paging, or a priority for forwarding paging.
  • the method further includes: receiving first indication information from the network device, where the first indication information is used to indicate the packet delay budget of the forwarded paging or the forwarded paging delay requirements.
  • the receiving module 930 is further configured to receive second indication information from the network device, where the second indication information is used to indicate the priority of forwarding the paging.
  • the first indication information is carried in any of the following: system information block, radio resource control signaling;
  • the second indication information is carried in any of the following: system information block, radio resource control signaling.
  • the paging of the second terminal device includes: sixth indication information, where the sixth indication information is used to indicate a packet delay budget for forwarding paging or a delay requirement for forwarding paging ;
  • the paging of the second terminal device includes: seventh indication information, where the seventh indication information is used to indicate the priority of forwarding the paging.
  • the processing module 910 is configured to determine the priority of the forwarded paging according to the packet delay budget of the forwarded paging or the delay requirement of the forwarded paging.
  • the processing module 910 is configured to determine a packet delay budget for forwarding paging or a delay requirement for forwarding paging according to the priority of forwarding paging.
  • the processing module 910 is configured to determine the remaining packet delay budget for forwarding paging according to the packet delay budget for forwarding paging or the delay requirement for forwarding paging; The remaining packet delay budget of the paging is forwarded to the second terminal device through the sending module 920 .
  • the side link resource is a side link resource used for forwarding paging to the second terminal device.
  • the processing module 910 is configured to determine the remaining packet delay budget for forwarding paging according to the packet delay budget for forwarding paging or the delay requirement for forwarding paging; Based on the remaining packet delay budget for forwarding paging, sidelink resources are selected.
  • the second terminal device is at least one of the following: a remote terminal device, a remote terminal device supporting layer 2 relay, a terminal device supporting the capability of a remote terminal device, and a layer 2 relay supporting The terminal equipment with remote terminal equipment capability, and the terminal equipment that receives and forwards paging.
  • the paging of the second terminal device includes at least one of the following:
  • third indication information where the third indication information is used to indicate that the second terminal device is paged
  • Fourth indication information where the fourth indication information is used to instruct the first terminal device to forward paging to the second terminal device.
  • the forwarding the paging to the second terminal device includes at least one of the following:
  • the present application provides a communication device 1000 .
  • the communication apparatus 1000 may be a network device, or a component in the network device, such as a chip.
  • the communication device 1000 may include a processing module 1010 , a sending module 1020 , and may also include a receiving module 1030 .
  • the processing module 1010 is configured to send the paging of the second terminal device through the sending module 1020, and the paging of the second terminal device is used for the first terminal device to forward the paging to the second terminal device according to the first information , the first information is used to indicate at least one of the following: a packet delay budget for forwarding paging, a delay requirement for forwarding paging, or a priority for forwarding paging.
  • the processing module 1010 is configured to send first indication information to the first terminal device through the sending module 1020, where the first indication information is used to indicate the packet delay budget or The delay requirement for forwarding paging.
  • the processing module 1010 is configured to send second indication information to the first terminal device through the sending module 1020, where the second indication information is used to indicate the priority of forwarding the paging.
  • the first indication information is carried in any of the following: system information block, radio resource control signaling;
  • the second indication information is carried in any of the following: system information block, radio resource control signaling.
  • the paging of the second terminal device includes: sixth indication information, where the sixth indication information is used to indicate a packet delay budget for forwarding paging or a delay requirement for forwarding paging ;
  • the paging of the second terminal device includes: seventh indication information, where the seventh indication information is used to indicate the priority of forwarding the paging.
  • the first information is further used to determine a sidelink resource, where the sidelink resource is a sidelink resource used for forwarding paging to the second terminal device.
  • the first information is also used to determine a remaining packet delay budget for forwarding paging, and the remaining packet delay budget for forwarding paging is also used to determine side link resources.
  • the processing module 1010 is further configured to determine that the second terminal device is At least one of the following: remote terminal equipment, remote terminal equipment supporting layer 2 relay, terminal equipment supporting remote terminal equipment capabilities, terminal equipment supporting layer 2 relaying remote terminal equipment capabilities, receiving and forwarding paging terminal equipment.
  • the processing module 1010 before the processing module 1010 sends the first indication information to the first terminal device through the sending module 1020 or sends the second indication information to the first terminal device, it is further configured to receive the information from the core network through the receiving module 1030
  • the eighth indication information of the device where the eighth indication information is used to indicate that the second terminal device is at least one of the following: a remote terminal device, a remote terminal device supporting Layer 2 relay, and a remote terminal device supporting the capability of terminal devices, terminal devices that support Layer 2 relay capabilities, and terminal devices that receive forwarded paging.
  • the paging of the second terminal device includes at least one of the following:
  • third indication information where the third indication information is used to indicate that the second terminal device is paged
  • Fourth indication information where the fourth indication information is used to instruct the first terminal device to forward paging to the second terminal device.
  • the forwarding the paging to the second terminal device includes at least one of the following:
  • the above communication device 900 or 1000 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above units may interact or be coupled with the storage unit to implement corresponding method or function.
  • the processing module 910 or 1010 may read data or instructions in the storage unit, so that the communication device implements the methods in the foregoing embodiments.
  • each unit in the device can be implemented in the form of software called by the processing element; they can also be implemented in the form of hardware; some units can also be implemented in the form of software called by the processing element, and some units can be implemented in the form of hardware.
  • each unit can be a separate processing element, or it can be integrated in a certain chip of the device.
  • it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device. Function.
  • all or part of these units can be integrated together, or implemented independently.
  • the processing element mentioned here may also be a processor, which may be an integrated circuit with signal processing capability.
  • each step of the above method or each unit above can be implemented by an integrated logic circuit of hardware in the processor element, or can also be implemented in the form of software called by the processing element.
  • the units in any of the above devices may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (application specific integrated circuit, ASIC), or, one or Multiple microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the units in the device can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above unit for receiving is an interface circuit of the device for receiving signals from other devices.
  • the receiving unit is an interface circuit for the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device, and is used to send signals to other devices.
  • the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
  • the communication device is used to realize the operations of the network device or the terminal device in the above embodiments.
  • the communication device includes: an antenna 1110 , a radio frequency device 1120 , and a signal processing part 1130 .
  • the antenna 1110 is connected to the radio frequency device 1120 .
  • the radio frequency device 1120 receives the information sent by the network equipment or other terminal equipment through the antenna 1110, and sends the information sent by the network equipment or other terminal equipment to the signal processing part 1130 for processing.
  • the signal processing part 1130 processes the information of the terminal equipment and sends it to the radio frequency device 1120
  • the radio frequency device 1120 processes the information of the terminal equipment and sends it to network equipment or other terminal equipment through the antenna 1110.
  • the communication device includes: an antenna 1110 , a radio frequency device 1120 , and a signal processing part 1130 .
  • the antenna 1110 is connected to the radio frequency device 1120 .
  • the radio frequency device 1120 receives the information sent by the first terminal or other terminal equipment through the antenna 1110, and sends the information sent by the first terminal or other terminal equipment to the signal processing part 1130 for processing.
  • the signal processing part 1130 processes the information of the network equipment and sends it to the radio frequency device 1120
  • the radio frequency device 1120 processes the information of the network equipment and sends it to the first terminal or other terminal equipment through the antenna 1110.
  • the signal processing part 1130 is used to realize the processing of each communication protocol layer of data.
  • the signal processing part 1130 can be a subsystem of the communication device, and the communication device can also include other subsystems, such as a central processing subsystem, which is used to realize the processing of the operating system and application layer of the communication device; another example, the peripheral subsystem The system is used to realize the connection with other devices.
  • the signal processing part 1130 may be a separately provided chip.
  • the above devices may be located in the signal processing part 1130 .
  • Signal processing section 1130 may include one or more processing elements 1131 , including, for example, a master CPU and other integrated circuits, and interface circuitry 1133 .
  • the signal processing section 1130 may further include a storage element 1132 .
  • the storage element 1132 is used to store data and programs, and the program for performing the method executed by the communication device in the above methods may or may not be stored in the storage element 1132, for example, stored in a memory outside the signal processing part 1130 During use, the signal processing part 1130 loads the program into the cache for use.
  • Interface circuitry 1133 is used to communicate with the device.
  • the above means can be located in the signal processing part 1130, and the signal processing part 1130 can be realized by a chip, and the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method performed by the above communication means, and the interface Circuits are used to communicate with other devices.
  • the unit that implements each step in the above method can be implemented in the form of a processing element scheduler, for example, the device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to execute the above method embodiment.
  • the storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element.
  • the program for executing the method executed by the communication device in the above method may be stored in a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element invokes or loads a program from the off-chip storage element to the on-chip storage element, so as to invoke and execute the method performed by the communication device (network device or terminal device) in the above method embodiments.
  • the unit of the communication device implementing each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the signal processing part 1130, where the processing elements may be integrated circuits, such as : One or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the units for implementing each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC chip is used to implement the above method.
  • the chip may integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to realize the method performed by the above communication device; or, the chip may integrate at least one integrated circuit for realizing the above communication
  • the above device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any method performed by a communication device provided in the above method embodiments.
  • the processing element can perform some or all of the steps performed by the communication device in the first way: that is, by calling the program stored in the storage element; or in the second way: that is, through the integrated logic circuit of the hardware in the processor element combined with instructions Part or all of the steps performed by the communication device may be performed in a manner; of course, some or all of the steps performed by the communication device may also be performed in combination with the first method and the second method.
  • the processing element here is the same as the above description, and can be a general-purpose processor, such as a CPU, and can also be one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
  • a storage element may be a memory, or may be a general term for multiple storage elements.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computer, it implements any of the method embodiments corresponding to the network device or the first terminal device in the above-mentioned embodiments. method.
  • the embodiment of the present application also provides a computer program product.
  • the computer program product is executed by a computer, the method described in any method embodiment of the network device or the first terminal device is implemented.
  • An embodiment of the present application further provides a communication system, where the communication system includes the network device and the first terminal device in the foregoing embodiments, and optionally, may further include a second terminal device.
  • An embodiment of the present application further provides an apparatus, including a unit for implementing the method introduced in any embodiment of the present application.
  • the AMF can include a paging priority indication in the paging message sent to the gNB, so that the gNB can transmit the paging with priority accordingly.
  • a gNB may determine the paging priority and indicate the paging priority to other gNBs in a RAN paging message.
  • the gNB can perform prioritization of different paging, for example, sending paging with high priority in one paging occasion.
  • prioritization of paging cannot be achieved.
  • the relay UE receives two pages with paging priority 1 (higher priority) and paging priority 8 (lower priority). In the absence of any priority information, the relay UE may forward pages with paging priority 8 before forwarding pages with paging priority 1. In this way, high-priority paging does not have priority over low-priority paging, resulting in that the paging priority indicated by the core network is useless, and the effect of prioritization cannot be achieved. If the base station provides paging priority information to the relay UE, high-priority paging can be transmitted preferentially. Therefore, the standard is proposed to discuss whether the gNB provides the paging priority information of each paging message to the relay UE.
  • the solutions of the above embodiments may be used in combination.
  • the above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • a computer program product consists of one or more computer programs. When the computer program is loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be transmitted from a website site, computer, server or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, etc. integrated with one or more available media.
  • Available media can be magnetic media (e.g., floppy disk, hard disk, magnetic tape), optical media (e.g., high-density digital video disc (digital video disc, DVD)), or semiconductor media (e.g., solid state disk (SSD) )Wait.
  • magnetic media e.g., floppy disk, hard disk, magnetic tape
  • optical media e.g., high-density digital video disc (digital video disc, DVD)
  • semiconductor media e.g., solid state disk (SSD)
  • An embodiment of the present application further provides a processing apparatus, including a processor and an interface; the processor is configured to execute the method described in any method embodiment of the network device or the first terminal device.
  • the above-mentioned processing device may be a chip, and the processor may be implemented by hardware or by software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor It may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, or located outside the processor and exist independently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande divulgue un procédé et un appareil de communication. Lorsqu'il est appliqué à un dispositif terminal de relais, le procédé consiste à : recevoir une radiomessagerie envoyée à un second dispositif terminal par un dispositif réseau ; et selon des premières informations, transférer la radiomessagerie au second dispositif terminal ou déterminer une ressource de liaison latérale, les premières informations servant à indiquer au moins l'un des éléments suivants : un budget de retard de paquet pour transférer la radiomessagerie, une exigence de latence pour transférer la radiomessagerie, ou une priorité pour transférer la radiomessagerie. En obtenant des premières informations, le dispositif terminal de relais peut, selon les premières informations, transférer la radiomessagerie reçue par le dispositif réseau et envoyée au second dispositif terminal afin de garantir la latence pour transférer la radiomessagerie et la priorité pour transférer la radiomessagerie, ce qui permet d'améliorer les performances de transfert de la radiomessagerie.
PCT/CN2022/097444 2021-06-24 2022-06-07 Procédé et appareil de communication WO2022267883A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110703126 2021-06-24
CN202110703126.5 2021-06-24
CN202110898616.5 2021-08-05
CN202110898616.5A CN115529662A (zh) 2021-06-24 2021-08-05 一种通信方法及装置

Publications (1)

Publication Number Publication Date
WO2022267883A1 true WO2022267883A1 (fr) 2022-12-29

Family

ID=84544121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/097444 WO2022267883A1 (fr) 2021-06-24 2022-06-07 Procédé et appareil de communication

Country Status (1)

Country Link
WO (1) WO2022267883A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108207017A (zh) * 2016-12-20 2018-06-26 电信科学技术研究院 一种处理寻呼的方法和装置
WO2018170948A1 (fr) * 2017-03-23 2018-09-27 Oppo广东移动通信有限公司 Procédé et appareil de radiomessagerie
WO2018201366A1 (fr) * 2017-05-04 2018-11-08 Oppo广东移动通信有限公司 Procédé et appareil de radiomessagerie
CN109314950B (zh) * 2017-04-25 2020-09-11 华为技术有限公司 一种寻呼方法及装置
WO2021034126A1 (fr) * 2019-08-21 2021-02-25 엘지전자 주식회사 Communication associée à un relais de couche 2

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108207017A (zh) * 2016-12-20 2018-06-26 电信科学技术研究院 一种处理寻呼的方法和装置
WO2018170948A1 (fr) * 2017-03-23 2018-09-27 Oppo广东移动通信有限公司 Procédé et appareil de radiomessagerie
CN109314950B (zh) * 2017-04-25 2020-09-11 华为技术有限公司 一种寻呼方法及装置
WO2018201366A1 (fr) * 2017-05-04 2018-11-08 Oppo广东移动通信有限公司 Procédé et appareil de radiomessagerie
WO2021034126A1 (fr) * 2019-08-21 2021-02-25 엘지전자 주식회사 Communication associée à un relais de couche 2

Similar Documents

Publication Publication Date Title
EP3499975B1 (fr) Procédé et appareil de traitement d'informations, ue, base station, et support de stockage
JP6772281B2 (ja) 無線リソース制御接続を確立するための方法及び装置
WO2018137284A1 (fr) Procédé et dispositif de transmission de message de radiomessagerie
CN109565743B (zh) 一种系统信息传输方法及装置
EP4333519A2 (fr) Procédé et appareil de traitement d'informations, ue, station de base et support de stockage
EP4164323B1 (fr) Procédé, dispositif et système de transmission de données
WO2020200135A1 (fr) Procédé de configuration de ressources et dispositif de communication
WO2019232732A1 (fr) Procédé de transmission de message de radiomessagerie et équipement associé
WO2018019001A1 (fr) Procédé et appareil de changement d'état d'un terminal
CN113382379B (zh) 无线通信方法和通信装置
US10237778B2 (en) Method for reporting buffer status of terminal and apparatus therefor in system in which heterogeneous wireless communication technologies are utilized
WO2018137364A1 (fr) Procédé d'envoi de données, terminal d'envoi de données, et station de base
KR20190073504A (ko) 데이터 전송/수신 장치 및 방법, 및 통신 시스템
WO2021062797A1 (fr) Procédé et appareil de configuration
WO2022068611A1 (fr) Procédé de transmission de liaison latérale et terminal
WO2018170911A1 (fr) Procédé et appareil pour configurer un paramètre de consommation d'énergie
CN115529662A (zh) 一种通信方法及装置
WO2022257733A1 (fr) Procédé et appareil de traitement de communication dans un scénario de partage de réseau
WO2023082356A1 (fr) Procédé de communication sans fil et dispositif terminal
US20230413229A1 (en) Method and Apparatus for Relay Communication
WO2022267883A1 (fr) Procédé et appareil de communication
JP2023500209A (ja) 第１の情報をハンドリングするためのユーザ装置、ネットワークノード、およびそれによって実行される方法
WO2023103958A1 (fr) Procédé et appareil de communication
KR20200071736A (ko) 네트워크 액세스 우선 순위화
WO2023225936A1 (fr) Procédé et dispositif de communication sans fil

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22827379

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22827379

Country of ref document: EP

Kind code of ref document: A1