[go: up one dir, main page]

WO2022033543A1 - 一种中继通信方法及通信装置 - Google Patents

一种中继通信方法及通信装置 Download PDF

Info

Publication number
WO2022033543A1
WO2022033543A1 PCT/CN2021/112205 CN2021112205W WO2022033543A1 WO 2022033543 A1 WO2022033543 A1 WO 2022033543A1 CN 2021112205 W CN2021112205 W CN 2021112205W WO 2022033543 A1 WO2022033543 A1 WO 2022033543A1
Authority
WO
WIPO (PCT)
Prior art keywords
ambr
session
terminal device
relay
network element
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2021/112205
Other languages
English (en)
French (fr)
Inventor
邢玮俊
吴问付
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP21855593.6A priority Critical patent/EP4185011A4/en
Publication of WO2022033543A1 publication Critical patent/WO2022033543A1/zh
Priority to US18/166,663 priority patent/US20230189054A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • 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
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0257—Traffic management, e.g. flow control or congestion control per individual bearer or channel the individual bearer or channel having a maximum bit rate or a bit rate guarantee
    • 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
    • H04W28/08—Load balancing or load distribution
    • H04W28/0875—Load balancing or load distribution to or through Device to Device [D2D] links, e.g. direct-mode links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • 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

  • the embodiments of the present application relate to the field of communication, and in particular, to a relay communication method and a communication device.
  • a terminal device (referred to as a relay terminal device) that establishes a connection with a cellular network can provide a larger network coverage for the cellular network through the PC5 interface with other terminal devices.
  • the aggregate maximum bit rate (AMBR) of a terminal device when it acts as a common user equipment (UE) is different from the AMBR when the UE acts as a relay device.
  • the AMBR when acting as a relay device is larger than that when acting as a normal UE.
  • the "role" assumed by the UE when accessing the network is not considered, so that the AMBR allocated to the UE may not meet the actual service requirements of the UE. For example, if the AMBR allocated to the UE is too small, it can only support the service of the UE itself, and cannot support the relay service of the UE at the same time.
  • the embodiment of the present application provides a relay communication method and communication device, and the network side can modify the AMBR used by the UE according to the relay service of the UE, so as to meet the actual service requirements of the UE.
  • a relay communication method including: the access network device can obtain the AMBR of the first session and the UE-granular AMBR when the first terminal device provides the relay service.
  • the first session is used to transmit data of the second terminal device, and the first terminal device is a relay device of the second terminal device.
  • the access network device may also modify the AMBR of the first session according to the UE-granular AMBR when the first terminal device provides the relay service.
  • the UE-AMBR and Session-AMBR when providing relay services are configured for the UE.
  • the network side can determine the UE-AMBR corresponding to different roles according to the "roles" assumed by the UE, so as to modify the AMBR of the PDU session, so as to perform the UE-AMBR on the UE.
  • Reasonable bandwidth control can be used to determine the UE-AMBR corresponding to different roles according to the "roles" assumed by the UE, so as to modify the AMBR of the PDU session, so as to perform the UE-AMBR on the UE.
  • the access network equipment can
  • the UE-AMBR when the relay UE provides the relay service modifies the AMBR of the PDU session (for example, the first session), so that the sum of the AMBRs of all the current PDU sessions of the relay UE cannot exceed the UE-AMBR when the relay UE provides the relay service. , which supports the UE's own service and also supports the UE's relay service.
  • acquiring the AMBR of the first session by the access network device includes: if the first session is the session of the first terminal device, then the access network device obtains the AMBR of the first session through the access network device.
  • the access mobility management network element of the first terminal device receives the AMBR of the first session sent by the session management network element of the first terminal device; or, if the first session is the session of the second terminal device, the access network device passes the first session through the first session.
  • the access mobility management network element of the second terminal device receives the AMBR of the first session sent by the session management network element of the second terminal device.
  • the session management network element of the relay device (for example, the first terminal device) establishes or updates a PDU session (for example, the first session) for the relay device to provide relay services, and the access network device can The AMBR of the session is obtained from the session management network element of the relay device.
  • the session management network element of the remote device (for example, the second terminal device) establishes or updates the PDU session (for example, the first session), and the relay device can forward the session to provide relay services for the relay device , the access network device can obtain the AMBR of the session from the session management network element of the remote device.
  • the access network device obtains the UE-granular AMBR of the relay service provided by the first terminal device, including : Receive the UE-granular AMBR sent by the access mobility management network element of the first terminal device.
  • the UDM/UDR may pre-configure the UE-AMBR when the UE acts as a relay device.
  • the access mobility management network element of the UE can obtain the UE-AMBR when the UE acts as a relay device from the UDM/UDR, and send the UE-AMBR when the UE acts as a relay device to the access network device , so that the access network device modifies the AMBR of the session according to the UE-AMBR when the UE acts as a relay device, so that the sum of the AMBR of all sessions when the UE acts as a relay device cannot exceed the UE-AMBR when the UE acts as a relay device.
  • the access network device modifies the AMBR of the first session according to the UE granularity AMBR, including : If the AMBR of the first session is greater than the available AMBR of the first terminal device, the access network device sends the first information to the session management network element of the first terminal device through the access mobility management network element of the first terminal device; the available AMBR The difference between the UE granularity AMBR that provides relay services for the first terminal device and the AMBR occupied by the session, the first information is used to request the session management network element of the first terminal device to modify the AMBR of the first session; from the first terminal device The session management network element receives the modified AMBR of the first session.
  • the AMBR occupied by the session may be the sum of the AMBRs of the sessions for which the first terminal device currently provides the relay service.
  • This application supports the layer 3 relay scenario.
  • the AMBR of the session providing the relay service is greater than the currently available AMBR of the relay device (the remaining AMBR of the UE-AMBR providing the relay service)
  • the session management network element of the relay device is indicated. Modify the AMBR of the session to ensure that the AMBR of the session does not exceed the currently available AMBR of the relay device.
  • the access network device modifies the AMBR of the first session according to the UE granularity AMBR, including :
  • the access network device sends the second information to the session management network element of the second terminal device through the access mobility management network element of the second terminal device;
  • the available AMBR is: The difference between the UE granular AMBR and the AMBR occupied by the session, the second information is used to request the session management network element of the second terminal device to modify the AMBR of the first session; receive the first session modification from the session management network element of the second terminal device After AMBR.
  • This application supports the layer 2 relay scenario.
  • the session management network element of the remote device is instructed to modify The AMBR of the session ensures that the AMBR of the session does not exceed the currently available AMBR of the relay device.
  • the method further includes: the access network device performs a A session performs bandwidth control.
  • the method further includes: modifying the access network device according to the first session The subsequent AMBR updates the available AMBR of the first terminal device.
  • the access network device may also send the first The available AMBR of the end device.
  • the available AMBR sent by the access network device may be the latest available AMBR of the first terminal device, that is, the remaining amount of UE-AMBR (UE granular AMBR that provides relay services) after the first terminal device accesses the first session .
  • the AMBR of the first session may be modified or initially allocated.
  • the access network device sends the latest available AMBR to the relay device, so that the relay device notifies the remote device in the relay discovery with the remote device, the current available AMBR of the relay device, the remote device can judge whether it satisfies its own AMBR according to the available AMBR. Business needs.
  • a relay communication method including: accessing a mobility management network element to obtain a user equipment UE granularity aggregated maximum bit rate AMBR that provides a relay service by a first terminal device; The device sends the UE-granular AMBR of the relay service provided by the first terminal device.
  • the UE-AMBR when the UE acts as a relay device may be pre-configured.
  • the access mobility management network element of the UE can obtain the UE-AMBR when the UE acts as a relay device, and send the UE-AMBR when the UE acts as a relay device to the access network device of the UE, so as to receive the UE-AMBR when the UE acts as a relay device.
  • the network access device adjusts the AMBR of the session according to the UE-AMBR.
  • the method further includes: the access mobility management network element receives relay capability information from the first terminal device; the relay capability information is used to represent the first A terminal device supports relay services.
  • the access mobility management network element may acquire the UE-AMBR when the UE acts as a relay device in response to the relay capability information sent by the UE.
  • the access mobility management network element obtains the UE granularity AMBR of the relay service provided by the first terminal device , including: the access mobility management network element obtains the subscription information of the first terminal device from the user data management network element or the unified data storage network element, and the subscription information of the first terminal device includes the UE granularity AMBR of the relay service provided by the first terminal device .
  • the UDM/UDR can pre-configure the UE-AMBR when the UE acts as a relay device (that is, the UE granular AMBR that provides relay services), and the access mobility management network element of the UE can obtain the UE as a relay from the UDM/UDR UE-AMBR when device.
  • a communication apparatus configured to be an access network device or a component in the access network device.
  • the communication device includes: a processing unit configured to obtain the aggregated maximum bit rate AMBR of the first session and the UE granularity AMBR of the user equipment provided by the first terminal device to provide relay services; the first session is used to transmit the second terminal device's AMBR. data, the first terminal device is a relay device of the second terminal device;
  • the processing unit is further configured to modify the AMBR of the first session according to the UE-granular AMBR.
  • the UE-AMBR and Session-AMBR when the relay service is provided are configured for the UE, and the network side can modify the AMBR of the PDU session according to the "role" assumed by the UE, so as to perform reasonable bandwidth control for the UE.
  • the access network equipment can
  • the UE-AMBR when the relay UE provides the relay service modifies the AMBR of the PDU session (for example, the first session), so that the sum of the AMBRs of all the current PDU sessions of the relay UE cannot exceed the UE-AMBR when the relay UE provides the relay service. , which supports the UE's own service and also supports the UE's relay service.
  • the processing unit moves through the access of the first terminal device
  • the management network element receives the AMBR of the first session sent by the session management network element of the first terminal device; if the first session is the session of the second terminal device, the processing unit uses the second
  • the access mobility management network element of the terminal device receives the AMBR of the first session sent by the session management network element of the second terminal device.
  • the communication device further includes a communication unit, and the communication unit is configured to receive the The UE-granular AMBR sent by the access mobility management network element of the first terminal device.
  • the communication device includes a communication unit, and the communication unit is configured to, if The processing unit determines that the AMBR of the first session is greater than the available AMBR of the first terminal device, and then sends a message to the session management network element of the first terminal device through the access mobility management network element of the first terminal device Send first information;
  • the available AMBR is the difference between the UE granularity AMBR and the AMBR occupied by the session, and the first information is used to request the session management network element of the first terminal device to modify the first session Receive the AMBR modified by the first session from the session management network element of the first terminal device.
  • the communication device includes a communication unit, if the processing unit determines that the If the AMBR of the first session is greater than the available AMBR of the first terminal device, the second information is sent to the session management network element of the second terminal device through the access mobility management network element of the second terminal device; the The available AMBR is the difference between the UE granular AMBR and the AMBR occupied by the session, and the second information is used to request the session management network element of the second terminal device to modify the AMBR of the first session; The session management network element of the second terminal device receives the modified AMBR of the first session.
  • the processing unit is further configured to: Bandwidth control is performed on the first session.
  • the processing unit is configured to update the first terminal according to the AMBR modified by the first session the available AMBR of the device;
  • the communication unit is configured to send the updated available AMBR of the first terminal device to the first terminal device.
  • a communication device where the communication device may be an access mobility management network element, or a component in the access mobility management network element.
  • the communication apparatus includes: a processing unit, which obtains a user equipment (UE) granularity aggregated maximum bit rate AMBR for which a first terminal device provides a relay service; a communication unit, which sends the first terminal device to an access network device of the first terminal device.
  • UE user equipment
  • the UE-AMBR when the UE acts as a relay device may be pre-configured.
  • the access mobility management network element of the UE can obtain the UE-AMBR when the UE acts as a relay device, and send the UE-AMBR when the UE acts as a relay device to the access network device of the UE, so as to receive the UE-AMBR when the UE acts as a relay device.
  • the network access device adjusts the AMBR of the session according to the UE-AMBR.
  • the communication unit is further configured to receive relay capability information from the first terminal device; the relay capability information is used to represent all The first terminal device supports the relay service.
  • the processing unit is specifically configured to store data from user data network elements or unified data storage
  • the network element acquires subscription information of the first terminal device, where the subscription information of the first terminal device includes the UE-granular AMBR of the relay service provided by the first terminal device.
  • a communication device comprising at least one processor and a memory, the at least one processor is coupled with the memory; the memory is used to store a computer program;
  • the at least one processor is configured to execute a computer program stored in the memory, so that the apparatus executes the method according to the first aspect and any one of the implementation manners of the first aspect.
  • a communication device comprising at least one processor and a memory, the at least one processor is coupled with the memory; the memory is used to store a computer program;
  • the at least one processor is configured to execute a computer program stored in the memory, so that the apparatus executes the method according to the second aspect and any one of the implementation manners of the second aspect.
  • a computer-readable storage medium comprising: instructions are stored in the computer-readable storage medium; when the computer-readable storage medium communicates in the third aspect and any one of the implementations of the third aspect When running on the device, the communication device is caused to execute the communication method described in the first aspect and any one of the implementation manners of the first aspect.
  • a computer-readable storage medium comprising: instructions are stored in the computer-readable storage medium; when the computer-readable storage medium communicates in the fourth aspect and any one of the implementation manners of the fourth aspect When running on the device, the communication device is caused to execute the communication method described in the second aspect and any one of the implementation manners of the second aspect.
  • a wireless communication device includes a processor, for example, applied in a communication device, for implementing the method described in the first aspect and any one of the implementation manners of the first aspect, the communication device
  • the device may be, for example, a system-on-chip.
  • the chip system further includes a memory, and the memory is used for storing necessary program instructions and data to implement the functions of the method in the first aspect.
  • a tenth aspect provides a wireless communication device
  • the communication device includes a processor, for example, applied to the communication device, for implementing the functions or methods involved in the second aspect and any implementation manner of the second aspect
  • the communication device may be, for example, a system-on-chip.
  • the chip system further includes a memory, and the memory is used for storing necessary program instructions and data to implement the functions of the method described in the second aspect above.
  • the chip system in the above aspects may be a system on chip (system on chip, SOC), or a baseband chip, etc.
  • the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, an interface module, and the like.
  • a communication system in an eleventh aspect, includes a first terminal device, a second terminal device, the third aspect, any possible implementation manner of the third aspect, the fourth aspect and the fourth The communication apparatus described in any possible implementation manner of the aspect.
  • the communication system further includes a session management network element.
  • FIG. 1 is an architectural diagram of a communication system provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a protocol stack provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a relay provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a layer 2 relay protocol layer provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a layer 2 relay session provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a layer 3 relay protocol layer provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a layer 3 relay session provided by an embodiment of the present application.
  • FIG. 8a is a structural block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 8b is another structural block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a relay communication method provided by an embodiment of the present application.
  • FIG. 10 is another schematic flowchart of a relay communication method provided by an embodiment of the present application.
  • FIG. 11 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 12 to FIG. 15 are another structural block diagram of a communication apparatus provided by an embodiment of the present application.
  • the network architecture includes an access network device 10, a terminal device (only the terminal device 21 and the terminal device 22 are shown in the figure), an access network device 10, and a terminal device 22.
  • the terminal equipment can send service data to the data network and receive service data from the data network through the access network equipment and user plane network elements.
  • the terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as Aircraft, balloons and satellites, etc.
  • the terminal equipment can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • the terminal equipment can be a mobile phone (mobile phone) ), tablet computer (Pad), computer with wireless transceiver function, mobile internet device,
  • MID wearable devices
  • VR virtual reality
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self driving Terminal
  • wireless terminal in remote medical wireless terminal in smart grid
  • wireless terminal in transportation safety wireless terminal in smart city, smart home home
  • wireless terminal in smart city, smart home home wireless terminals, etc.
  • the embodiments of the present application do not limit application scenarios.
  • the terminal equipment may also be sometimes called user equipment (user equipment, UE), mobile station, remote station, etc.
  • UE user equipment
  • remote station remote station
  • the embodiments of this application do not limit the specific technology, equipment form, and name used by the terminal equipment.
  • An access network device is a device in the network that is used to connect a terminal device to a wireless network.
  • the access network device may be a node in a radio access network, and may also be referred to as a base station, and may also be referred to as a radio access network (radio access network, RAN) node (or device).
  • RAN radio access network
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as traditional Macro base station eNB and micro base station eNB in heterogeneous network scenarios, or may also include the next generation node B (next generation node B) in the fifth generation mobile communication technology (5th generation, 5G) new radio (new radio, NR) system , gNB), or may also include radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS) , transmission reception point (TRP), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (base band unit, BBU), baseband pool BBU pool, or WiFi access point ( access point, AP), etc
  • CU centralized unit
  • DU distributed unit
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • DU mainly supports radio link control layer (radio link control, RLC), media access control layer (media access control, MAC) and physical layer protocols.
  • the access management network element (the embodiment of this application may also be referred to as the access mobility management network element) is mainly used for the attachment, mobility management, and tracking area update procedures of the terminal in the mobile network.
  • Access stratum non access stratum, NAS
  • NAS non access stratum
  • the access management network element can be an access and mobility management function (AMF).
  • AMF access and mobility management function
  • future communication systems such as 6G communication systems
  • the mobility management network element may still be the AMF network element, or may have other names, which are not limited in this application.
  • the session management network element is mainly used for session management in the mobile network, such as session establishment, modification and release. Specific functions include allocating Internet Protocol (IP) addresses to terminals, and selecting user plane network elements that provide packet forwarding functions.
  • IP Internet Protocol
  • the session management network element may be a session management function (SMF).
  • SMF session management function
  • the session management network element may still be an SMF network element, or it may be With other names, this application is not limited.
  • User plane NEs are mainly used to process user packets, such as forwarding, accounting, and lawful interception.
  • the user plane network element may also be referred to as a protocol data unit (protocol data unit, PDU) session anchor (PDU session anchor, PSA).
  • PDU protocol data unit
  • PSA protocol data unit
  • the user plane network element may be a user plane function (UPF).
  • UPF user plane function
  • the user plane network element may still be a UPF network element, or it may be With other names, this application is not limited.
  • Policy control network element including user subscription data management function, policy control function, charging policy control function, quality of service (quality of service, QoS) control, etc.
  • the policy control network element may be a policy control function (PCF).
  • PCF policy control function
  • the policy control network element may still be a PCF network element, or it may be With other names, this application is not limited.
  • the network slice selection function network element is mainly used to select the appropriate network slice for the service of the terminal device.
  • the network slice selection network element may be the network slice selection function (NSSF) network element.
  • the network slice selection network element may still be the NSSF network element.
  • the network element may also have other names, which is not limited in this application.
  • the network storage function network element is mainly used to provide the registration and discovery functions of the network element or the services provided by the network element.
  • the network storage function network element may be a network repository function (NRF).
  • NRF network repository function
  • the network storage function network element may still be an NRF network element, or It can also have other names, which is not limited in this application.
  • Network data analysis network elements can be analyzed from various network functions (network functions, NF), such as policy control network elements, session management network elements, user plane network elements, access management network elements, and application function network elements (through the network capability opening function). network elements) to collect data and make analysis and predictions.
  • network functions such as policy control network elements, session management network elements, user plane network elements, access management network elements, and application function network elements (through the network capability opening function). network elements) to collect data and make analysis and predictions.
  • the network data analysis network element may be the network data analysis function (NWDAF).
  • NWDAF network data analysis function
  • the network data analysis network element may still be the NWDAF network element. , or may have other names, which are not limited in this application.
  • the unified data management network element is mainly used to manage the subscription information of terminal equipment.
  • the unified data management network element may be a unified data management (UDM), and in a future communication system (such as a 6G communication system), the unified data management network element may still be a UDM network element, or It can also have other names, which is not limited in this application.
  • UDM unified data management
  • the unified data storage network element is mainly used to store structured data information, including subscription information, policy information, and network data or service data defined in a standard format.
  • the unified data storage network element may be a unified data repository (UDR).
  • the unified data storage network element may still be a UDR network element, or It can also have other names, which is not limited in this application.
  • the authentication service function network element is mainly used to perform security authentication on terminal equipment.
  • the authentication service function network element may be an authentication server function (AUSF).
  • AUSF authentication server function
  • the authentication service function network element may still be an AUSF network element, or It can also have other names, which is not limited in this application.
  • the network capability exposure network element can expose some functions of the network to applications in a controlled manner.
  • the network capability exposure network element may be the network capability exposure function (NEF).
  • the network capability exposure network element may still be the NEF network element. Alternatively, it may have other names, which are not limited in this application.
  • the application function network element can provide service data of various applications to the control plane network element of the operator's communication network, or obtain network data information and control information from the control plane network element of the communication network.
  • the application function network element may be an application function (AF), and in the future communication system (such as a 6G communication system), the application function network element may still be the AF network element, or may also have other The name is not limited in this application.
  • the data network is mainly used to provide data transmission services for terminal equipment.
  • the data network can be a private network, such as a local area network, or a public data network (PDN) network, such as the Internet (Internet), or a private network jointly deployed by operators, such as a configured IP multimedia network sub-network.
  • PDN public data network
  • IMS IP multimedia core network subsystem
  • network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • a platform eg, a cloud platform
  • the foregoing network element or function may be implemented by one device, or may be implemented jointly by multiple devices, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.
  • the access management network element is the AMF network element
  • the network slice selection function network element is the NSSF network element as an example for description.
  • AMF AMF
  • NSSF NSSF
  • the AMF described later in this application can be replaced by an access management network element
  • the NSSFF can be replaced by a network slice selection function network element.
  • the core network devices of the terminal device 21 and the terminal device 22 may be different.
  • the terminal device 21 and the terminal device 22 are accessed and managed by different AMFs respectively, or the session management and control of the terminal device 21 and the terminal device 22 are respectively performed by different SMFs.
  • Quality of service quality of service, QoS
  • QoS parameters can be used to modify network QoS to provide better services for network communication. For example, problems such as network delay and congestion can be solved by modifying QoS parameters to ensure efficient network operation.
  • the UE can establish PDU sessions for different services, and the QoS parameters required by different services are different. For example, video services require high bandwidth, while voice communication requires reliable low latency.
  • the SMF can establish different QoS flows (QoS Flow) for different services according to the service requirements of the UE, and can use QFI (QoS Flow Identifier) to identify the QoS flow.
  • QoS Flow QoS flows
  • QFI QoS Flow Identifier
  • the QoS requirements corresponding to the same QoS flow are the same, and these requirements can be quantified by QoS parameters.
  • QoS parameters can be delay, bandwidth, packet loss rate, etc.
  • These QoS parameters can also be identified using 5QI (5G QoS Identifier).
  • the QoS parameter may also include an aggregate maximum bit rate (AMBR).
  • AMBR includes UE-AMBR and Session-AMBR.
  • UE-AMBR refers to the maximum bandwidth that can be achieved by all PDU Sessions corresponding to the UE
  • Session-AMBR refers to all non-guaranteed bit rate QoS flows (Non-guaranteed bit rate QoS Flow, Non-GBR) corresponding to the PDU sessions QoS Flow) can achieve the maximum bandwidth.
  • FIG. 2 is a schematic diagram of a protocol stack provided by an embodiment of the present application. Different devices may interact through the protocol layers shown in FIG. 2 .
  • the protocol stack includes an application layer (application layer), a protocol data unit (protocol data unit, PDU) layer, a network protocol (internet protocol, IP) layer, a business data adaptation protocol (new radio-service data adaptation protocol, SDAP) layer, packet data convergence protocol (packet data convergence protocol, PDCP) layer, radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer Floor.
  • application layer application layer
  • PDU protocol data unit
  • IP internet protocol
  • SDAP business data adaptation protocol
  • packet data convergence protocol packet data convergence protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • media access control media access control
  • MAC media access control
  • physical (physical, PHY) layer Floor physical (physical, PHY) layer Floor.
  • the relay may be understood as a terminal device accessing the network through another terminal device, and establishing an indirect connection with the network (indirect connection).
  • the terminal equipment that provides the relay service may be called a relay UE (relay UE), and the terminal equipment that accesses the network through the relay may be called a remote UE (remote UE).
  • FIG. 3 is a relay architecture diagram provided by an embodiment of the present application.
  • a remote device can communicate with an access network device through a relay device (relay UE), thereby establishing an indirect connection with the core network.
  • the terminal device 21 can be used as a relay UE, and the terminal device 22 can be used as a remote UE.
  • the terminal device 21 communicates with the access network device 10 through a uu link, and the terminal device 21 and the terminal device 22 communicate through a direct link.
  • the terminal device 21 can also provide relay services for the terminal device 22.
  • the terminal device 21 receives data sent by the terminal device 22 through the PC5 interface, and forwards the data of the terminal device 22 to the access network device 10;
  • the uu link receives the data sent by the access network device to the terminal device 22, and can also forward the received data to the terminal device 22 through the PC5 interface.
  • FIG. 4 is a schematic diagram of a protocol stack of a layer 2 relay.
  • the relay UE forwards the data packet for the remote UE, it only processes the data below the PDCP layer (does not process the data packet at the PDCP layer) and forwards it to the access network device for processing, which can ensure the remote UE.
  • FIG. 5 is a schematic diagram of the connection of a layer 2 relay.
  • a relay UE can connect to multiple remote UEs and provide layer 2 relay forwarding for these remote UEs.
  • the remote UE 1 establishes a PDU session 1 through the relay UE.
  • the relay UE can provide relay services for the remote UE 1 through the PDU session 1 of the remote UE 1.
  • the relay UE can forward the service data of the PDU session 1 of the Remote UE 1.
  • the remote UE 2 establishes a PDU session 2 through the relay UE, and the relay UE can use the PDU session 2 of the remote UE 2 to provide a relay service for the remote UE 2. It can be seen that in the layer 2 relay scenario, the SMF of the remote UE performs session management on the session used for relay.
  • FIG. 6 is a schematic diagram of a protocol stack of a layer 3 relay.
  • the relay UE forwards the data packet for the remote UE in the layer 3 relay scenario, it only processes the data below the IP layer (does not process the content of the data packet at the IP layer) and forwards it to the access network device for processing.
  • the access network device does not perceive whether the relay UE forwards the data of the remote UE.
  • FIG. 7 is a schematic diagram of the connection of a layer 3 relay.
  • a relay UE can connect to multiple remote UEs and provide layer 3 relay forwarding for these remote UEs. Different from the layer 2 relay, in the layer 3 relay scenario, the relay UE uses its own PDU session to forward data for the remote UE. It can be seen that in the layer 3 relay scenario, the SMF of the relay UE performs session management on the session used for relay.
  • the "role" assumed by the UE when accessing the network is not considered, so that the AMBR allocated to the UE may not meet the actual service requirements of the UE.
  • the AMBR allocated to the UE is too small, it can only support the service of the UE itself, and cannot support the relay service of the UE at the same time.
  • the UE granularity AMBR (UE-AMBR) when the UE provides the relay service should be larger than that of the UE as a normal UE ( That is, UE-AMBR that does not provide relay services).
  • the Session-AMBR of the relay UE should also be higher than the Session-AMBR of the normal UE.
  • the UE-AMBR of the relay UE is only controlled for the sum of its own PDU session AMBR, and when the remote UE is connected to the network through the relay UE, the relay UE may have another
  • the UE-AMBR is specially used to limit the total upper limit of the PDU session AMBR of the remote UE.
  • the embodiment of the present application provides a relay communication method, which configures the UE-AMBR and Session-AMBR when the relay service is provided for the UE, and the network side can modify the AMBR of the PDU session according to the "role" assumed by the UE, so as to carry out Reasonable bandwidth control.
  • the access network device can use the AMBR of the PDU session according to the UE-AMBR when the relay UE provides the relay service. Modify so that the sum of the AMBR of all current PDU sessions of the relay UE cannot exceed the UE-AMBR when the relay UE provides the relay service, and supports the relay service of the UE while supporting the service of the UE itself.
  • the operator can perform differentiated service control and charging according to the "role" assumed by the UE.
  • the UE-AMBR used by the relay UEs for relay services can be individually controlled, thereby limiting the upper limit of the bandwidth that the UE can use to provide relay services for other UEs, instead of Affects the authorized bandwidth when the UE normally uses its own services.
  • FIG. 8a shows a schematic diagram of a hardware structure of a communication apparatus 810 according to an embodiment of the present application.
  • the communication apparatus 810 includes a processor 8101 and at least one communication interface (in FIG. 8a , the communication interface 8103 is used as an example for illustration), and optionally, a memory 8102 is also included.
  • the processor 8101, the memory 8102 and the communication interface 8103 are connected to each other.
  • the processor 8101 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors used to control the execution of the programs of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication interface 8103 using any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN) Wait.
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 8102 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM) or other type of static storage device that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being executed by a computer Access any other medium without limitation.
  • the memory can exist independently or be connected to the processor.
  • the memory can also be integrated with the processor.
  • the memory 8102 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 8101 .
  • the processor 8101 is configured to execute the computer-executed instructions stored in the memory 8102, thereby implementing the intent processing method provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.
  • the processor 8101 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8a.
  • the communication apparatus 810 may include multiple processors, such as the processor 8101 and the processor 8106 in FIG. 8a.
  • processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the communication apparatus 810 may further include an output device 8104 and an input device 8105 .
  • the output device 8104 communicates with the processor 8101 and can display information in a variety of ways.
  • the output device 8104 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • the input device 8105 is in communication with the processor 8101 and can receive user input in a variety of ways.
  • the input device 8105 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.
  • the above-mentioned communication apparatus 810 may be a general-purpose device or a dedicated device.
  • the communication device 810 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in FIG. 8a. equipment.
  • PDA personal digital assistant
  • This embodiment of the present application does not limit the type of the communication device 810 .
  • the communication device 810 may be a complete terminal, may also be a functional component or component that implements the terminal, or may be a communication chip, such as a baseband chip.
  • the communication interface may be a radio frequency module.
  • the communication interface 8103 may be an input/output interface circuit of the chip, and the input/output interface circuit is used to read in and output baseband signals.
  • FIG. 8b is a schematic structural diagram of a communication device.
  • the communication apparatus 820 may be the access network device described in this embodiment of the present application.
  • the communication device includes at least one processor 8201 , at least one transceiver 8203 , at least one network interface 8204 and one or more antennas 8205 .
  • at least one memory 8202 is also included.
  • the processor 8201, the memory 8202, the transceiver 8203 and the network interface 8204 are connected, for example, through a bus.
  • the antenna 8205 is connected to the transceiver 8203.
  • the network interface 8204 is used for the communication device to connect with other communication devices through a communication link, for example, the communication device is connected to the core network element through the S1 interface.
  • the connection may include various types of interfaces, transmission lines, or buses, which are not limited in this embodiment.
  • the processor in this embodiment of the present application may include at least one of the following types: a general-purpose central processing unit (Central Processing Unit, CPU), a digital signal processor (Digital Signal Processor, DSP), a microprocessor, Application-Specific Integrated Circuit (ASIC), Microcontroller Unit (MCU), Field Programmable Gate Array (FPGA), or an integrated circuit for implementing logic operations .
  • the processor 8201 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. At least one processor 8201 may be integrated in one chip or located on multiple different chips.
  • the memory in this embodiment of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (Electrically erasable programmable read-only memory, EEPROM).
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • the memory may also be compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.) , a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.
  • CD-ROM compact disc read-only memory
  • optical disc storage including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.
  • magnetic disk storage medium or other magnetic storage device or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.
  • the memory 8202 may exist independently and be connected to the processor 8201 .
  • the memory 8202 can also be integrated with the processor 8201, for example, in one chip.
  • the memory 8202 can store program codes for implementing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 8201 .
  • the processor 8201 is configured to execute computer program codes stored in the memory 8202, thereby implementing the technical solutions in the embodiments of the present application.
  • the transceiver 8203 can be used to support the reception or transmission of radio frequency signals between the communication apparatus and the terminal equipment, and the transceiver 8203 can be connected to the antenna 8205 .
  • one or more antennas 8205 can receive radio frequency signals
  • the transceiver 8203 can be used to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and convert the digital baseband signals or digital intermediate frequency signals.
  • the digital intermediate frequency signal is provided to the processor 8201, so that the processor 8201 performs further processing on the digital baseband signal or the digital intermediate frequency signal, such as demodulation processing and decoding processing.
  • the transceiver 8203 can be used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 8201, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and transmit the modulated digital baseband signal or digital intermediate frequency signal to a radio frequency signal, and transmit the signal through one or more antennas 8205
  • the radio frequency signal is transmitted.
  • the transceiver 8203 can selectively perform one or more stages of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of precedence is adjustable.
  • the transceiver 8203 can selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal.
  • the up-mixing processing and digital-to-analog conversion processing The sequence of s is adjustable.
  • Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.
  • a transceiver may be referred to as a transceiver circuit, a transceiver unit, a transceiver device, a transmission circuit, a transmission unit, or a transmission device, and the like.
  • the communication device 820 may be a whole communication device, a component or a component that realizes the function of the communication device, or a communication chip.
  • the transceiver 8203 may be an interface circuit of the chip, and the interface circuit is used to read in and output baseband signals.
  • An embodiment of the present application provides a relay communication method. As shown in FIG. 9 , the method includes the following steps:
  • the access network device acquires the UE-granular AMBR of the relay service provided by the first terminal device.
  • the first terminal device can communicate with the network side through the access network device, and the first terminal device can also provide relay services for other terminal devices.
  • the first terminal device is a relay device of the second terminal device.
  • the second terminal device can send data to the access network device through the first terminal device, and the second terminal device can receive data sent by the access network device through the first terminal device.
  • the UE granularity AMBR that the first terminal device provides the relay service may be the UE-AMBR when the first terminal device acts as a relay (referred to as relay UE-AMBR), which is the upper limit of the AMBR when the first terminal device provides the relay service.
  • relay UE-AMBR the UE-AMBR when the first terminal device acts as a relay
  • the sum of the session-AMBR of the current session cannot exceed the UE-AMBR of the first terminal device as a relay device (ie, the UE-AMBR of which the first terminal device provides relay services).
  • the current session may be a session in which the first terminal device provides a relay service, or may be a session in which the first terminal device provides other services.
  • the session in which the first terminal device provides the relay service includes the session in which the first terminal device provides the relay service for the second terminal device, and the session in which the first terminal device provides the relay service for other remote devices (remote UE).
  • the session in which the first terminal device provides the relay service for the second terminal device may be a PDU session established by the first terminal device or a PDU session established by the second terminal device.
  • the access network device may acquire the UE-granular AMBR of the relay service provided by the first terminal device from an access mobility management network element (eg, AMF) of the first terminal device.
  • AMF access mobility management network element
  • the access network device can obtain the relay UE-AMBR of the first terminal device in the following two ways:
  • the access network device can obtain the information of the first terminal device from the AMF of the first terminal device during the registration process, service request process, base station handover process, session establishment process or session update process.
  • relay UE-AMBR relay UE-AMBR.
  • the first terminal device provides its own relay capability information in the registration process, and the AMF of the first terminal device can obtain the UE granularity AMBR of the relay service provided by the first terminal device from the UDM (or UDR). .
  • the UE-granularity AMBR for the relay service provided by the first terminal device may be the UE-granularity AMBR when the first terminal device acts as a relay device.
  • the first terminal device sends a registration request to the AMF, where the registration request includes relay capability information of the terminal device, and the relay capability information is used to indicate that the first terminal device supports the relay service, that is, the first terminal device can As a relay, it provides relay services for other terminals.
  • the relay capability information may be the communication capability information of the first terminal device on the PC5 port, indicating that the first terminal device can establish a direct connection with other terminal devices to provide relay services for other terminal devices.
  • the AMF of the first terminal device may acquire the subscription information of the first terminal device from the UDM (or UDR).
  • the subscription information of the first terminal device includes the relay UE-AMBR of the first terminal device, that is, the UE granularity AMBR of the relay service provided by the first terminal device.
  • the subscription information of the first terminal device may further include a session granularity AMBR (referred to as relay session-AMBR) for the relay service provided by the first terminal device.
  • the AMF of the first terminal device may also send the subscription information of the first terminal device to the access network device through an N2 message.
  • the first terminal device sends a session establishment request or a session update request to the AMF of the first terminal device, requesting to establish a new PDU session for the relay service of the first terminal device, or, for the first terminal device
  • the relay service of the terminal device updates the current PDU session of the first terminal device.
  • the AMF of the first terminal device After receiving the session establishment request or the session update request, sends the session establishment request or the session update request to the session management network element (eg, SMF) of the first terminal device.
  • the session management network element of the first terminal device acquires the subscription information of the first terminal device from the UDM.
  • the session management network element of the first terminal device may also send a session establishment response or a session update response to the AMF of the first terminal device, where the session establishment response or the session update response includes subscription information of the first terminal device.
  • the AMF of the first terminal device may send the subscription information of the first terminal device to the access network device of the first terminal device through a session establishment response or a session update response.
  • the subscription information of the first terminal device includes the relay UE-AMBR of the first terminal device, that is, the UE granularity AMBR of the relay service provided by the first terminal device.
  • the subscription information of the first terminal device may further include a session granularity AMBR (referred to as relay session-AMBR) for the relay service provided by the first terminal device.
  • the access network device can obtain the relay UE-AMBR of the first terminal device from the AMF of the first terminal device in the registration process, service request process, and base station handover process, or access The network device obtains the relay UE-AMBR of the first terminal device by means of configuration update.
  • the AMF of the first terminal device may obtain the subscription information of the first terminal device from the UDM, and send the subscription of the first terminal device to the access network device through an N2 message.
  • the subscription information of the first terminal device includes the relay UE-AMBR of the first terminal device, that is, the UE granularity AMBR of the relay service provided by the first terminal device.
  • the access network device determines that the first terminal device will provide the relay service, the access network device does not locally store the subscription information related to the relay service of the first terminal device, or the current UE-AMBR of the first terminal device cannot satisfy
  • the access network device sends a configuration update request to the AMF of the first terminal device according to the requirements of the relay service.
  • the AMF of the first terminal device may acquire subscription information of the first terminal device from the UDM, where the first subscription information includes the relay UE-AMBR of the first terminal device.
  • the AMF of the first terminal device may also send a configuration update response to the access network device, where the configuration update response includes subscription information of the first terminal device.
  • the session management network element acquires the AMBR of the first session.
  • the first session is used to carry the relay service of the first terminal device, and the first terminal device can forward data from the second terminal device to the access network device through the first session, or the first terminal device can pass The first session forwards the data from the access network device to the second terminal device.
  • the first session is a session of the first terminal device.
  • the first terminal device may create a new PDU session or update a current PDU session for the relay service, where the first session is a PDU session newly created by the first terminal device or the first terminal device The current PDU session.
  • the second terminal device establishes a PDU session, and the first terminal device can reuse the PDU session of the second terminal device to provide relay services for the second terminal device, and the first session is the second terminal device. session.
  • the session management network element of the first terminal device obtains the relay session-AMBR of the first terminal device, and uses the relay session-AMBR as the AMBR of the first session.
  • the session management network element of the first terminal device acquires the relay session-AMBR of the first terminal device by acquiring subscription information of the first terminal device.
  • the session management network element of the first terminal device receives the session establishment request or session update request sent by the first terminal device through the access mobility management network element of the first terminal device; the session establishment request is used for The session management network element is requested to establish the first session, and the session update request is used to request the session management network element to update the first session.
  • the session management network element acquires subscription information of the first terminal device from a user data management network element (eg, UDM) in response to the session establishment request or the session update request, where the subscription information includes the first terminal device relay session-AMBR, relay UE-AMBR.
  • a user data management network element eg, UDM
  • the session management network element may use the session granular AMBR as the AMBR of the first session.
  • the session management network element of the first terminal device obtains the relay session-AMBR of the first terminal device by updating the session association policy information, or, by updating the policy and charging control rules (policy and charging control) rule, PCC rule) to obtain the relay session-AMBR of the first terminal device.
  • policy and charging control rules policy and charging control rule, PCC rule
  • the session management network element of the first terminal device receives the session establishment request or session update request sent by the first terminal device through the access mobility management network element of the first terminal device; the session establishment request is used for The session management network element is requested to establish the first session, and the session update request is used to request the session management network element to update the first session.
  • the session management network element sends a session management policy association request (SM policy association establishment) or a session management policy modification request to the policy and charging control network element in response to the session establishment request or the session update request, SM Policy Association Establishment or Modification );
  • SM policy association establishment session management policy association request
  • session management policy modification request to the policy and charging control network element in response to the session establishment request or the session update request, SM Policy Association Establishment or Modification );
  • the session management network element receives session policy information from the policy and charging control network element; the session policy information includes the session granularity AMBR of the relay service provided by the first terminal device;
  • the session management network element may use the session granular AMBR as the AMBR of the first session.
  • the session update request or the session establishment request may carry the identifier of the first session
  • the UDM may determine that the first session is used for relaying services according to the identifier of the first session
  • the UDM may also The identifier determines the service type of the first terminal device, and determines the relay session-AMBR matching the service type in the subscription information of the first terminal device.
  • the session update request or the session establishment request carries a data network name (DNN)
  • the UDM may determine that the first session is used for relaying services according to the DNN, and the UDM may also determine the service type of the first terminal device according to the DNN, and determine The relay session-AMBR matching the service type in the subscription information of the first terminal device.
  • DNN data network name
  • the session establishment request or the session update request includes a relay service indication.
  • the UDM may determine that the first session is used to relay the service according to the identifier of the first session, and determine the relay session-AMBR used for the first session in the subscription information of the first terminal device.
  • the session management network element of the second terminal device acquires the session-AMBR of the second terminal device, and uses the session-AMBR of the second terminal device as the AMBR of the first session.
  • the session management network element of the second terminal device acquires the session-AMBR of the second terminal device by acquiring the subscription information of the second terminal device.
  • the session management network element of the second terminal device receives the session establishment request or session update request sent by the second terminal device through the access mobility management network element of the second terminal device; the session establishment request is used to request the session management The network element establishes the first session, and the session update request is used to request the session management network element to update the first session.
  • the session management network element of the second terminal device acquires the subscription information of the second terminal device from the user data management network element in response to the session establishment request or the session update request, where the subscription information includes the second terminal device
  • the session granularity AMBR that is, the session-AMBR of the second terminal device.
  • the session management network element of the second terminal device takes the session granular AMBR as the AMBR of the first session.
  • the session management network element of the second terminal device obtains the relay session-AMBR of the first terminal device by updating the session-related policy or PCC rule.
  • the session management network element of the second terminal device receives the session establishment request or the session update request sent by the second terminal device through the access mobility management network element of the second terminal device;
  • the session management network element of the second terminal device sends a session management policy association request or a session management policy modification request to the policy and charging control network element in response to the session establishment request or the session update request;
  • the session management network element of the second terminal device receives session policy information from the policy and charging control network element; the session policy information includes the session granularity AMBR of the second terminal device;
  • the session management network element of the second terminal device takes the session granular AMBR as the AMBR of the first session.
  • the session update request or the session establishment request may carry the identifier of the first session, and the UDM may determine the service type of the second terminal device according to the identifier of the first session, and determine that in the subscription information of the second terminal device. A session-AMBR that matches the service type.
  • the session update request or the session establishment request carries a data network name (DNN), and the UDM can determine the service type of the second terminal device according to the DNN, and determine whether the subscription information of the second terminal device matches the service type. matching session-AMBR.
  • DNN data network name
  • the session management network element sends the AMBR of the first session to the access network device through the access mobility management network element.
  • the session management network element of the first terminal device sends the AMBR of the first session to the access network device through the access mobility management network element of the first terminal device.
  • the session management network element of the second terminal device sends the AMBR of the first session to the access network device through the access mobility management network element of the second terminal device.
  • the access network device acquires the AMBR of the first session, and modifies the AMBR of the first session according to the UE-granular AMBR of the relay service provided by the first terminal device.
  • the access network device determines whether the UE-AMBR that the first terminal device provides the relay service can support the current first session. If not, the AMBR of the first session needs to be modified.
  • the access network device Different from layer 3 relay and layer 2 relay, there are two different implementations for the access network device to modify the AMBR of the first session:
  • the access network device instructs the session management network element of the first terminal device to modify the AMBR of the first session.
  • the access network device may record the sum of the session-AMBR of the current session when the first terminal device acts as a relay device, and may also refer to the relay UE-AMBR and the sum of the session-AMBR of the current session for the newly established current session.
  • the AMBR is modified. If the access network device determines that the AMBR of the first session is greater than the available AMBR of the first terminal device, the access network device sends the first terminal device's access mobility management network element to the first terminal device.
  • the session management network element of the terminal device sends first information, requesting the session management network element of the first terminal device to modify the AMBR of the first session.
  • the available AMBR of the first terminal device is the difference between the UE-granular AMBR that provides the relay service for the first terminal device and the AMBR occupied by the session.
  • the AMBR occupied by the session may be the sum of session-AMBR of all current sessions recorded by the first terminal device.
  • the relay UE-AMBR is 10 Mbps
  • the relay session-AMBR allocated by the UDM for the first session is 3 Mbps
  • the AMBR currently occupied by all sessions except the first session of the first terminal device is 8 Mbps. (10Mbps-8Mbps) ⁇ 3Mbps, that is, the available AMBR of the first terminal device cannot support the first session
  • the access network device requests the session management network element of the first terminal device to modify the AMBR of the first session. For example, modify the AMBR of the first session to 2Mbps.
  • the access network device may also send third information to the session management network element of the first terminal device through the access mobility management network element of the first terminal device, where the third information is used to indicate the the available AMBR of the first terminal device, so that the session management network element of the first terminal device modifies the AMBR of the first session according to the available AMBR of the first terminal device.
  • the modified AMBR of the first session is less than or equal to the available AMBR of the first terminal device.
  • the access network device instructs the session management network element of the second terminal device to modify the AMBR of the first session.
  • the access network device determines that the AMBR of the first session is greater than the available AMBR of the first terminal device, the access network device sends the information to the mobile management network element through the access mobility management network element of the second terminal device.
  • the session management network element of the second terminal device sends second information; the available AMBR is the difference between the UE granularity AMBR and the AMBR occupied by the session, and the second information is used to request the second terminal device for The session management network element modifies the AMBR of the first session.
  • the access network device may also send fourth information to the session management network element of the second terminal device through the access mobility management network element of the second terminal device, where the fourth information is used to indicate the the available AMBR of the first terminal device, so that the session management network element of the second terminal device modifies the AMBR of the first session according to the available AMBR of the first terminal device.
  • the modified AMBR of the first session is less than or equal to the available AMBR of the first terminal device.
  • the relay UE-AMBR is 10 Mbps
  • the relay session-AMBR allocated by the UDM for the first session is 3 Mbps
  • the AMBR currently occupied by all current sessions except the first session of the first terminal device is 8 Mbps. (10Mbps-8Mbps) ⁇ 3Mbps, that is, the available AMBR of the first terminal device cannot support the first session
  • the access network device requests the session management network element of the first terminal device to modify the AMBR of the first session. For example, modify the AMBR of the first session to 2Mbps.
  • the access network device modifies the AMBR of the first session.
  • the access network device may also send the modified AMBR to the session management network element.
  • the session management network element receives the modified AMBR sent by the access network device, and can send response information to the access network device.
  • the response information may indicate that the session management network element allows the AMBR currently modified by the first access network device.
  • the session management network element in the layer 2 relay scenario is the session management network element of the second terminal device
  • the session management network element in the layer 3 relay scenario is the session management network element of the first terminal device.
  • the access network device performs bandwidth control on the first session according to the modified AMBR.
  • the access network device receives the modified AMBR of the first session from the session management network element of the first terminal device or the session management network element of the second terminal device;
  • the access network device may further perform bandwidth control on the first session according to the modified AMBR.
  • the method shown in FIG. 9 further includes: the access network device sending the available AMBR to the first terminal device.
  • the available AMBR sent by the access network device may be the latest available AMBR of the first terminal device, that is, the remaining amount of UE-AMBR (UE granular AMBR providing relay service) after the first terminal device accesses the first session.
  • the AMBR of the first session may be modified or initially allocated.
  • the relay UE-AMBR of the first terminal device (that is, the UE granularity AMBR when the first terminal device provides the relay service) is 10 Mbps, and the remaining available UE-AMBR before the first terminal device accesses the first session is 3 Mbps. Assuming that the session-AMBR of the first session is 2 Mbps, the remaining available UE-AMBR after the first terminal device accesses the first session is 1 Mbps, and the access network device sends a message to the first terminal device, instructing the first terminal device to provide terminal services The remaining amount of UE-AMBR is 1Mbps.
  • the session-AMBR of the first session can be modified. For example, if the session-AMBR of the first session is modified to 1 Mbps, the remaining available UE-AMBR after the first terminal device accesses the first session is 2 Mbps, and the access network device sends a message to the first terminal device, indicating that the first terminal device The remaining amount of UE-AMBR providing terminal services is 2 Mbps.
  • the first terminal device may inform other terminals of the currently supported maximum bandwidth during the relay discovery process with other terminal devices.
  • an embodiment of the present application further provides a relay communication method.
  • the relay communication method provided in FIG. 10 is only applicable to the layer 3 relay scenario.
  • the first terminal device is the relay UE
  • the second terminal device is the remote UE as an example.
  • the remote UE can access the network through the relay UE and establish a non-direct connection with the network.
  • the relay UE can establish or update a PDU session to provide relay services for the remote UE.
  • the RAN may modify the AMBR of the session according to the role of the UE.
  • the method includes the following steps:
  • the UDM/UDR configures the subscription information of the UE.
  • the subscription information of the UE includes the QoS parameters of the UE as a common UE and the QoS parameters of the UE as a relay UE.
  • the UE serves as the UE-AMBR and/or Session-AMBR of the normal UE; the UE serves as the relay UE-AMBR and/or the relay Session-AMBR of the relay UE.
  • the UE can be understood as that the UE does not provide a relay service.
  • the subscription information of the UE may be configured and stored by the UDM, or the UDM may store the subscription information of the UE in a unified data repository (unified data repository, UDR) network element.
  • UDR unified data repository
  • the UDM directly sends the subscription information to the network element, or the UDM sends the UE's subscription information to the network element after acquiring the UE's subscription information from the UDR.
  • the UDM may also notify the changed UE subscription information to the network element that has subscribed to the UE's subscription information.
  • UDM and UDR can be deployed together.
  • the relay UE reports relay capability information to the AMF.
  • step 1002 is an optional step, and the AMF is the AMF of the relay UE, which provides services for the relay UE.
  • relay The UE can send relay capability information to the AMF when registering with the network, requesting network services, or switching cells.
  • the relay capability information indicates that the relay UE supports the relay service and has the capability of providing the relay service.
  • the relay UE sends a registration request to the AMF, where the registration request includes relay capability information of the relay UE.
  • the AMF obtains the subscription information of the relay UE from the UDM/UDR.
  • the subscription information of the relay UE includes the relay UE-AMBR.
  • the relay UE-AMBR is the UE granularity AMBR when the relay UE provides relay services, or when the relay UE acts as a relay device.
  • the subscription information obtained by the AMF from the UDM/UDR is also relay session-AMBR, that is, the session granularity AMBR when the UE acts as a relay device (or provides a relay service).
  • the AMF sends the relay UE-AMBR in the relay UE subscription information to the RAN.
  • the AMF may use the relay UE-AMBR as a part of the relay UE context, and send it to the base station (for example, RAN) serving the relay UE along with the N2 message when the relay UE performs the service request process, the registration process or the base station handover process.
  • the base station for example, RAN
  • the remote UE and the relay UE perform relay discovery.
  • the remote UE when the remote UE establishes a connection with the RAN, and the communication quality of the Uu interface between the remote UE and the RAN cannot meet the communication requirements, or the remote UE is out of network coverage or in a disconnected state (connection management-idle, CM- IDLE), the remote UE can initiate a relay connection to the relay UE according to the relay discovery information preconfigured on the network side or the locally preconfigured relay discovery information to complete the relay discovery.
  • the relay discovery information is used to establish a relay connection (for example, a direct connection between the remote UE and the relay UE, which can be a PC5 connection), including the authorization information for using the relay to connect to the network, and the strategy for discovering relay nodes information, spectrum information for relay communication, etc.
  • the remote UE can obtain the identifier of the relay UE in the relay discovery process.
  • the remote UE and the relay UE exchange signaling may include the relay service service information or QoS requirements to be performed, as follows:
  • the relay service service information may be specific services that require the relay UE to access the cellular network as the remote UE, such as VR video forwarding service, Internet access service, Service ID or Application ID, etc.
  • the relay service service information may also be a relay service code (relay service code, RSC) preconfigured by the network side, or DNN information.
  • the QoS requirement can be the QoS parameter corresponding to the QoS requirement of the service that the remote UE needs to request, for example, the PC5 QoS parameter and/or the Uu QoS parameter, the PC5 QoS parameter is used to represent the service quality requirement of the PC5 port, and the Uu QoS parameter is used for It is used to characterize the service quality requirements of the Uu interface.
  • the relay UE initiates a PDU session establishment request or a PDU session modification request.
  • the remote UE needs to use the PDU session of the relay UE, so the relay UE establishes or changes the PDU session here.
  • the session that the relay UE requests to establish or update may be referred to as the first session.
  • the PDU session establishment request or the PDU session modification request carries the relay service indication.
  • the relay service indication is used to indicate that the relay UE will provide relay services for the remote UE, and the role of the relay UE can be determined as a relay device according to the relay service indication.
  • the relay service indication may be an explicit indication information, or a specific combination of DNN and/or slice information (the combination is used to provide a relay connection service).
  • a PDU session establishment request or a PDU session change request may also include:
  • Relay service code used to indicate UE-to-Network relay service.
  • the relay service code can also indicate the specific relay service business content, such as the Service ID or Application ID of the relay service or DNN or slice information;
  • PC5 QoS parameters can be the QoS parameters obtained during the relay discovery process between the remote UE and the relay UE.
  • the AMF forwards the PDU session establishment request or the PDU session modification request to the SMF.
  • the SMF obtains the subscription information of the relay UE from the UDM/UDR, including the relay UE's relay
  • the relay session-AMBR is the session granularity AMBR used by the relay UE to provide relay services.
  • the SMF may use the relay session-AMBR as the AMBR of the first session.
  • step 1008 is an optional step.
  • the SMF can also obtain relay session-AMBR through steps 1009 and 1010.
  • the SMF updates the PCC rule or the session association policy information through the PCF, and obtains the relay session-AMBR.
  • the SMF instructs the PCF to update the PCC rule or session-associated policy information, and the PCF obtains user or session-related subscription information from the UDM/UDR in response to the SMF's instruction to generate or update the PCC rule or session-associated policy information.
  • the PCF may also send the generated or updated PCC rule or session associated policy information to the SMF, where the PCC rule or session associated policy information includes relay session-AMBR.
  • the SMF may use the relay session-AMBR as the AMBR of the first session.
  • the SMF either executes step 1008 to obtain the relay session-AMBR directly from the UDM/UDR, or executes step 1009 to obtain the relay session-AMBR through the PCF. If the SMF executes step 1008 and then executes step 1009 to obtain the Relay Session-AMBR from the PCF, the SMF uses the Relay Session-AMBR obtained from the PCF as the AMBR value of the current session.
  • the RAN determines whether the currently available UE-AMBR meets the relay service requirements of the relay UE.
  • the SMF sends third information to the RAN, where the third information is used to indicate that the first session is used to transmit data of the second terminal device, that is, to indicate that the first session is used to relay services.
  • third information may be added to the N2 message sent by the SMF to the RAN, indicating that the PDU session is used for relaying services.
  • the RAN After the RAN receives the N2 message, it can determine, according to the third information, that the AMBR of the PDU session is included in the overhead of the relay UE-AMBR. That is to say, the PDU session can be modified according to the relay UE-AMBR.
  • session-AMBR When the remaining amount of relay UE-AMBR does not meet the session-AMBR of the PDU session, modify the session-AMBR of the PDU session.
  • the RAN determines the UE-AMBR currently available to the first terminal device according to the sum of the relay UE-AMBR and the session-AMBR of the current session of the first terminal device.
  • the current session can be a session in which the relay UE provides relay services, or a session in which the relay UE provides other services.
  • the session in which relay UE provides relay service includes the session in which relay UE provides relay service for the current remote UE, and the session in which relay UE provides relay service for other remote devices.
  • the session in which the relay UE provides relay services for the current remote UE is the PDU session established by the relay UE.
  • session-AMBR of the first session does not exceed the currently available UE-AMBR of the first terminal device, it is determined that the relay service requirement of the relay UE is met, and the session-AMBR of the first session is not modified;
  • the RAN may modify the session-AMBR of the first session, or may instruct the SMF of the relay UE to modify the session-AMBR of the first session.
  • the RAN may also send the currently available UE-AMBR of the relay UE (the remaining available AMBR of the UE-AMBR when acting as a relay device) to the SMF of the relay UE, so that the SMF of the relay UE can use the UE-AMBR currently available to the relay UE according to the UE-AMBR currently available to the relay UE.
  • AMBR modifies the first session session-AMBR.
  • the relay UE-AMBR is 10 Mbps
  • the sum of the session-AMBR of the current session of the first terminal device is 7 Mbps
  • the currently available UE-AMBR of the first terminal device is 3 (ie 10-7) Mbps.
  • the SMF of the relay UE is instructed to modify the session-AMBR of the first session.
  • the SMF After completing the establishment or update of the PDU session, the SMF sends a feedback message to the AMF.
  • the feedback message is used to indicate that the PDU session of the relay UE has been established or changed.
  • the feedback message may include the session-AMBR modified by the SMF.
  • the RAN modifies the session-AMBR of the first session, and the feedback message may include response information indicating that the SMF supports (or agrees or allows) the session-AMBR modified by the RAN.
  • the AMF After receiving the feedback message from the SMF, the AMF forwards the feedback message to the RAN.
  • the RAN allocates radio resources to the relay UE through a radio resource control (radio resource control, RRC) configuration message.
  • RRC radio resource control
  • the RRC configuration message may also include the UE-AMBR currently available to the relay UE.
  • the RRC message may further include configuring an IP address for the remote UE and QoS parameters for PC5 communication, etc.
  • the relay UE sends the remote UE report information to the SMF.
  • the remote UE report information includes the user identity (remote UE ID) of the remote UE and the assigned IP address and is sent to the SMF.
  • the relay UE can send the remote UE report information to the SMF network element through the user plane UPF, or send the remote UE report information to the SMF through the AMF network element.
  • the SMF After receiving the remote UE report information, the SMF configures the IP address of the remote UE to the UPF network element.
  • the SMF sends the modified Session-AMBR of the first session to the UPF through the N4 configuration message.
  • the remote UE establishes a data communication connection with the application server through the relay UE.
  • the method shown in FIG. 10 implements the layer 3 relay function.
  • the network side modifies the AMBR of the PDU session of the relay UE according to the relay UE-AMBR.
  • an embodiment of the present application further provides a relay communication method.
  • the method shown in FIG. 11 is only applicable to a layer 2 relay scenario.
  • the first terminal device is the relay UE
  • the second terminal device is the remote UE as an example.
  • the remote UE can access the network through the relay UE and establish a non-direct connection with the network.
  • the remote UE can establish or update a PDU session, and the relay UE provides relay services for the remote UE through the PDU session.
  • the RAN may modify the AMBR of the session according to the role of the UE.
  • the method includes the following steps:
  • Steps 1101 to 1105 are the same as the steps 1001 to 1005 of the embodiment shown in FIG. 10 above, and are not repeated here.
  • the remote UE initiates a PDU session establishment request or a PDU session modification request.
  • the remote UE After the remote UE establishes the PC5 connection with the relay UE, the remote UE sends a PDU session establishment request or a PDU session modification request to the AMF of the remote UE through the relay UE and the RAN.
  • the remote UE can also send a relay service request to the AMF of the remote UE through a non-access stratum (non-access stratum, NAS) message, requesting to establish a connection with the network through the relay.
  • NAS non-access stratum
  • the RAN can obtain the binding relationship between the remote UE and the relay UE. Specifically, the remote UE sends an RRC message to the RAN through the relay, and after receiving the RRC message forwarded by the relay UE, the RAN forwards the NAS message in the RRC message to the AMF of the remote UE. At the same time, the RAN can obtain the identifier of the relay UE from the RRC message, thereby obtaining the binding relationship between the relay UE and the remote UE.
  • the AMF of the remote UE sends a PDU session establishment or PDU session modification request to the SMF of the remote UE, and the SMF establishes or modifies the PDU session for the remote UE according to the request.
  • the PDU session established or changed by the SMF for the remote UE according to the request is hereinafter referred to as the first session.
  • the SMF of the remote UE can also obtain the session-AMBR of the remote UE from the UDM/UDR, and convert the session-AMBR of the remote UE to the session-AMBR of the remote UE. session-AMBR as the first session.
  • the SMF of the remote UE may also send the session-AMBR of the first session to the AMF of the remote UE.
  • the AMF of the remote UE sends the session-AMBR of the first session to the RAN.
  • the relay UE may initiate a QoS parameter modification process to the RAN according to the PC5 service information or QoS parameters obtained in the relay discovery process, to obtain the relay UE-AMBR of the relay UE.
  • the relay UE initiates the QoS parameter change process through the QoS parameter change request message.
  • the QoS parameter change request message can carry the relay service indication, and the relay service indication is used to indicate that the relay UE will provide the relay service.
  • the RAN may obtain the subscription information of the UE as the relay device from the AMF of the relay UE according to the relay service indication, including the UE-AMBR of the UE as the relay device, that is, the relay UE-AMBR described in the embodiment of the present application.
  • the QoS parameter change request message can also carry relay service information or PC5 QoS requirements.
  • the RAN obtains the relay UE-AMBR of the relay UE from the AMF of the relay UE.
  • the RAN first determines whether the local configuration information includes the UE-AMBR used by the relay UE for the relay service. If there is no local storage, the RAN requests the relay UE-AMBR from the AMF of the relay UE.
  • step 1104 executes 1109 and 1110 to obtain the relay UE-AMBR of the relay UE.
  • the RAN determines whether the currently available UE-AMBR of the relay UE meets the relay service requirement of the remote UE.
  • the RAN determines the UE-AMBR currently available to the first terminal device according to the sum of the relay UE-AMBR and the session-AMBR of the current session of the first terminal device.
  • the current session may be a session in which the relay UE provides relay services.
  • the session in which relay UE provides relay service includes the session in which relay UE provides relay service for the current remote UE, and the session in which relay UE provides relay service for other remote devices.
  • the session in which the relay UE provides relay services for the current remote UE is the PDU session established by the remote UE.
  • the session-AMBR of the first session does not exceed the currently available UE-AMBR of the first terminal device, it is determined to meet the relay service requirements of the remote UE, and the session-AMBR of the first session is not modified; if the session-AMBR of the first session is If it exceeds the currently available UE-AMBR of the first terminal device, it is determined that the relay service requirement of the remote UE is not met, and the session-AMBR of the first session needs to be modified.
  • the relay UE-AMBR is 10M
  • the sum of the session-AMBR of the current session of the first terminal device is 7 Mbps
  • the currently available UE-AMBR of the first terminal device is 3 (ie 10-7) Mbps.
  • the SMF of the remote UE is instructed to modify the session-AMBR of the first session.
  • the RAN may also receive the modified session-AMBR from the SMF of the remote UE.
  • the RAN sends the radio resource feedback information to the SMF of the remote UE through the AMF of the remote UE.
  • the radio resource feedback information is used to indicate the PDU session or QoS flow that is not supported by the RAN and the reason for not supporting (Cause).
  • the session-AMBR currently supported by the relay UE may also be included, and the SMF of the remote UE may modify the session-AMBR of the first session according to the session-AMBR currently supported by the relay UE.
  • the radio resource feedback information may include a PDU session ID or a QFI (QoS Flow Identifier), which is used to identify an unsupported PDU session or a specific QoS flow.
  • QFI QoS Flow Identifier
  • the RAN sends the modified session-AMBR of the first session to the relay UE.
  • the RAN sends the updated available UE-AMBR to the relay UE.
  • Step 1113 is an optional step. Specifically, after the SMF of the relay UE modifies the session-AMBR of the first session, the RAN may also update the UE-AMBR currently available to the first terminal device.
  • the relay UE-AMBR is 10 Mbps
  • the sum of the session-AMBR of the current session of the first terminal device is 7 Mbps
  • the currently available UE-AMBR of the first terminal device is 3 (ie 10-7) Mbps.
  • the modified session-AMBR of SMF is 2Mbps.
  • the currently available UE-AMBR of the first terminal device is updated to be 1 Mbps (ie, 3-2).
  • the RAN may also notify the relay UE of the currently available UE-AMBR through the RRC configuration message.
  • the remote UE can send the relay service bandwidth requirement information to the relay UEs in the PC5 interactive signaling, and the relay UEs can use the currently available UE-AMBR Determine whether the relay service requirements of the remote UE can be met.
  • the remote UE establishes a data communication connection with the application server through the relay UE.
  • the method shown in FIG. 11 implements the layer 2 relay function.
  • the network side modifies the AMBR of the PDU session of the remote UE according to the relay UE-AMBR.
  • FIG. 12 shows a possible schematic structural diagram of the communication apparatus involved in the above embodiment.
  • the communication apparatus shown in FIG. 12 may be the access network device described in the embodiment of the present application, or may be a component in the access network device implementing the above method, or may be a chip applied in the access network device.
  • the chip may be a System-On-a-Chip (SOC) or a baseband chip with a communication function, or the like.
  • the communication device includes a processing unit 1201 and a communication unit 1202 .
  • the processing unit may be one or more processors, and the communication unit may be a transceiver or a communication interface.
  • the processing unit 1201 may be configured to support the communication apparatus to perform the processing actions in the foregoing method embodiments, and specifically, may perform the processing actions performed by the access network device in FIG. 9 to FIG. 11 .
  • it may be used to support an access network device to perform steps 901, 904, and 905, or steps 1010, 1111, and/or other processes for the techniques described herein.
  • a communication unit 1202 configured to support communication between the access network device and other communication apparatuses, and specifically perform the sending and/or receiving actions performed by the access network device in FIG. 9 to FIG. 11 , for example, supporting access
  • the network device performs one or more of steps 903, 1004, and 1012, and/or other processes for the techniques described herein.
  • the communication device may further include a storage unit 1203, where the storage unit 1203 is configured to store program codes and/or data of the communication device.
  • the processing unit 1201 may include at least one processor, the communication unit 1202 may be a transceiver or a communication interface, and the storage unit 1203 may include a memory.
  • Fig. 14 shows a possible schematic structural diagram of the communication device involved in the above embodiment.
  • the communication device shown in FIG. 14 may be the access mobility management network element described in the embodiments of the present application, may also be a component in the access mobility management network element that implements the above method, or may be applied to access mobility management
  • the chip in the network element may be a System-On-a-Chip (SOC) or a baseband chip with a communication function, or the like.
  • the communication apparatus includes a processing unit 1401 and a communication unit 1402 .
  • the processing unit 1401 may be one or more processors, and the communication unit 1402 may be a transceiver or a communication interface.
  • the processing unit 1401 may be configured to support the communication device to perform the processing actions in the foregoing method embodiments, and specifically, may perform the processing actions performed by the access mobility management network element in FIG. 9 to FIG. 11 .
  • the access mobility management network element may be configured to support access mobility management network elements to obtain subscription information for the UE as a relay, including UE-AMBR with the UE as a relay, and/or other procedures for the techniques described herein.
  • the communication unit 1402 is configured to support communication between the access mobility management network element and other communication apparatuses, and specifically may perform the sending and/or receiving actions performed by the incoming mobility management network element in FIG. 9 to FIG. 11 .
  • the supporting access mobility management network element performs step 1007, step 1010, and/or other processes for the techniques described herein.
  • the communication device may further include a storage unit 1403 for storing program codes and data of the communication device.
  • the processing unit 1401 may include at least one processor, the communication unit 1402 may be a transceiver or a communication interface, and the storage unit 1403 may include at least one memory.
  • each unit may also be called a module, a component, or a circuit, etc. accordingly.
  • An embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium; the instructions are used to execute the method shown in FIG. 9 or FIG. 10 or FIG. 11 .
  • Embodiments of the present application provide a computer program product including instructions, which, when executed on a communication device, cause the communication device to execute the method shown in FIG. 9 or FIG. 10 or FIG. 11 .
  • a wireless communication device includes: an instruction is stored in the wireless communication device; when the wireless communication device runs on the communication device shown in FIGS. 8a, 8b, and 12 to 15, the communication device is made to execute the following The method shown in FIG. 9 or FIG. 10 or FIG. 11 .
  • the wireless communication device may be a chip.
  • the processors in the embodiments of the present application may include, but are not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU) ), or artificial intelligence processors and other types of computing devices that run software, each computing device may include one or more cores for executing software instructions to perform operations or processing.
  • the processor can be a separate semiconductor chip, or can be integrated with other circuits into a semiconductor chip. For example, it can form a SoC (on-chip) with other circuits (such as codec circuits, hardware acceleration circuits, or various bus and interface circuits).
  • the processor may further include necessary hardware accelerators, such as field programmable gate arrays (FPGA), PLDs (Programmable Logic Devices) , or a logic circuit that implements dedicated logic operations.
  • FPGA field programmable gate arrays
  • PLD Programmable Logic Devices
  • the memory in this embodiment of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) , RAM) or other types of dynamic storage devices that can store information and instructions, and can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM).
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • the memory may also be compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.) , a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.
  • CD-ROM compact disc read-only memory
  • optical disc storage including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.
  • magnetic disk storage medium or other magnetic storage device or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.
  • At least one means one or more.
  • “Plural” means two or more.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • the disclosed apparatus and method for accessing a database may be implemented in other manners.
  • the embodiments of the database access apparatus described above are only illustrative.
  • the division of the modules or units is only a logical function division.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of database access devices or units through some interfaces, which may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (which may be a single chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Landscapes

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

Abstract

本申请实施例提供了一种中继通信方法及通信装置，涉及通信领域，网络侧可以根据UE的中继业务修改UE使用的AMBR，满足UE实际的业务需求。包括：接入网设备获取第一会话的聚合最大比特速率AMBR以及第一终端设备提供中继服务的用户设备UE粒度AMBR；所述第一会话用于传输第二终端设备的数据，所述第一终端设备为所述第二终端设备的中继设备；所述接入网设备根据所述UE粒度AMBR修改所述第一会话的AMBR。

Description

一种中继通信方法及通信装置
本申请要求于2020年08月12日提交国家知识产权局、申请号为202010809409.3、申请名称为“一种中继通信方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，尤其涉及一种中继通信方法及通信装置。
背景技术
在通信网络中，与蜂窝网络建立连接的终端设备(称为中继终端设备)可以通过与其他终端设备之间的PC5接口为蜂窝网络提供更大的网络覆盖范围。一个终端设备在作为普通用户设备(user equipment，UE)时的聚合最大比特速率(aggregate maximum bit rate，AMBR)，和UE作为中继设备时的AMBR是不同的。例如，作为中继设备时的AMBR大于作为普通UE时的AMBR。
但现有技术在为UE分配AMBR时，并不会考虑UE接入网络时承担的“角色”，导致为UE分配的AMBR可能不满足UE实际的业务需求。例如，为UE分配的AMBR过小，只能支持UE本身的业务，不能同时支持UE的中继业务。
发明内容
本申请实施例提供了一种中继通信方法及通信装置，网络侧可以根据UE的中继业务修改UE使用的AMBR，满足UE实际的业务需求。
第一方面，提供了一种中继通信方法，包括：接入网设备可以获取第一会话的AMBR以及第一终端设备提供中继服务时的UE粒度AMBR。第一会话用于传输第二终端设备的数据，第一终端设备是第二终端设备的中继设备。接入网设备还可以根据第一终端设备提供中继服务时的UE粒度AMBR修改第一会话的AMBR。
本申请中为UE配置提供中继服务时的UE-AMBR、Session-AMBR，网络侧可以根据UE承担的“角色”确定不同角色对应的UE-AMBR，从而修改PDU会话的AMBR，以便对UE进行合理的带宽控制。当relay UE(例如，第一终端设备)为中继业务建立PDU会话，或者relay UE转发remote UE(例如，第二终端设备的)本身的PDU会话提供中继业务时，接入网设备可以根据relay UE提供中继服务时的UE-AMBR对该PDU会话(例如，第一会话)的AMBR进行修改，使得relay UE当前所有PDU会话的AMBR总和不能超过relay UE提供中继服务时的UE-AMBR，支持UE本身的业务的同时支持UE的中继业务。
结合第一方面，在第一方面的第一种可能的实现方式中，接入网设备获取第一会话的AMBR，包括：若第一会话为第一终端设备的会话，则接入网设备通过第一终端设备的接入移动管理网元接收第一终端设备的会话管理网元发送的第一会话的AMBR；或，若第一会话为第二终端设备的会话，则接入网设备通过第二终端设备的接入移动管理网元接收第二终端设备的会话管理网元发送的第一会话的AMBR。
本申请适用于层2中继场景和层3中继场景。层3中继场景中，中继设备(例如，第一终端设备)的会话管理网元建立或更新PDU会话(例如，第一会话)用于中继设备 提供中继服务，接入网设备可以从中继设备的会话管理网元获取该会话的AMBR。层2中继场景中，远程设备(例如，第二终端设备)的会话管理网元建立或更新PDU会话(例如，第一会话)，中继设备可以转发该会话为中继设备提供中继服务，接入网设备可以从远程设备的会话管理网元获取该会话的AMBR。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，接入网设备获取第一终端设备提供中继服务的UE粒度AMBR，包括：接收第一终端设备的接入移动管理网元发送的UE粒度AMBR。
本申请中，UDM/UDR可以预先配置UE作为中继设备时的UE-AMBR。当UE提供中继服务时，UE的接入移动管理网元可从UDM/UDR获取UE作为中继设备时的UE-AMBR，将UE作为中继设备时的UE-AMBR发送给接入网设备，以便接入网设备根据UE作为中继设备时的UE-AMBR修改会话的AMBR，使得UE作为中继设备时所有会话的AMBR总和不得超过UE作为中继设备时的UE-AMBR。
结合第一方面或第一方面的第一或第二种可能的实现方式，在第一方面的第三种可能的实现方式中，接入网设备根据UE粒度AMBR修改第一会话的AMBR，包括：若第一会话的AMBR大于第一终端设备的可用AMBR，接入网设备则通过第一终端设备的接入移动管理网元向第一终端设备的会话管理网元发送第一信息；可用AMBR为第一终端设备提供中继服务的UE粒度AMBR与已被会话占用AMBR的差值，第一信息用于请求第一终端设备的会话管理网元修改第一会话的AMBR；从第一终端设备的会话管理网元接收第一会话修改后的AMBR。所述已被会话占用AMBR可以是第一终端设备当前提供中继服务的会话的AMBR的总和。
本申请支持层3中继场景，当提供中继服务的会话的AMBR大于中继设备当前可用的AMBR(提供中继服务的UE-AMBR的剩余AMBR)，则指示中继设备的会话管理网元修改该会话的AMBR，保证该会话的AMBR不超过中继设备当前可用的AMBR。
结合第一方面或第一方面的第一或第二种可能的实现方式，在第一方面的第四种可能的实现方式中，接入网设备根据UE粒度AMBR修改第一会话的AMBR，包括：
若第一会话的AMBR大于第一终端设备的可用AMBR，接入网设备则通过第二终端设备的接入移动管理网元向第二终端设备的会话管理网元发送第二信息；可用AMBR为UE粒度AMBR与已被会话占用AMBR的差值，第二信息用于请求第二终端设备的会话管理网元修改第一会话的AMBR；从第二终端设备的会话管理网元接收第一会话修改后的AMBR。
本申请支持层2中继场景，当提供中继服务的会话的AMBR大于中继设备当前可用的AMBR(提供中继服务的UE-AMBR的剩余AMBR)，则指示远程设备的会话管理网元修改该会话的AMBR，保证该会话的AMBR不超过中继设备当前可用的AMBR。
结合第一方面的第三或第四种可能的实现方式，在第一方面的第五种可能的实现方式中，所述方法还包括：接入网设备根据第一会话修改后的AMBR对第一会话进行带宽控制。
结合第一方面或第一方面的第一至第五钟可能的实现方式中，在第一方面的第六种可能的实现方式中，所述方法还包括：接入网设备根据第一会话修改后的AMBR更新第一终端设备的可用AMBR。
结合第一方面或第一方面的第一至第六种可能的实现方式，在第一方面的第七种可 能的实现方式中，所述接入网设备还可以向第一终端设备发送第一终端设备的可用AMBR。
本申请中，接入网设备发送的可用AMBR可以是第一终端设备最新的可用AMBR，即第一终端设备接入第一会话后UE-AMBR(提供中继服务的UE粒度AMBR)的剩余量。其中，第一会话的AMBR可以是修改后的，也可以是初始分配的。
接入网设备向中继设备发送最新的可用AMBR，以便中继设备在与远程设备的中继发现中通知远程设备，当前中继设备的可用AMBR，远程设备可以根据可用AMBR判断是否满足自身的业务需求。
第二方面，提供了一种中继通信方法，包括：接入移动管理网元获取第一终端设备提供中继服务的用户设备UE粒度聚合最大比特速率AMBR；向第一终端设备的接入网设备发送第一终端设备提供中继服务的UE粒度AMBR。
本申请中，可以预先配置UE作为中继设备时的UE-AMBR(即提供中继服务的UE粒度AMBR)。UE提供中继服务时，UE的接入移动管理网元可以获取UE作为中继设备时的UE-AMBR，将UE作为中继设备时的UE-AMBR发送给UE的接入网设备，以便接入网设备根据UE-AMBR调整会话的AMBR。
结合第二方面，在第二方面的第一种可能的实现方式中，所述方法还包括：接入移动管理网元从第一终端设备接收中继能力信息；中继能力信息用于表征第一终端设备支持中继服务。
本申请中，接入移动管理网元可以响应于UE发送的中继能力信息，获取UE作为中继设备时的UE-AMBR。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，接入移动管理网元获取第一终端设备提供中继服务的UE粒度AMBR，包括：接入移动管理网元从用户数据管理网元或统一数据存储网元获取第一终端设备的签约信息，第一终端设备的签约信息包括第一终端设备提供中继服务的UE粒度AMBR。
本申请中，UDM/UDR可以预先配置UE作为中继设备时的UE-AMBR(即提供中继服务的UE粒度AMBR)，UE的接入移动管理网元可以从UDM/UDR获取UE作为中继设备时的UE-AMBR。
第三方面，提供一种通信装置，该通信装置可以是接入网设备，或者接入网设备中的部件。所述通信设备包括：处理单元，用于获取第一会话的聚合最大比特速率AMBR以及第一终端设备提供中继服务的用户设备UE粒度AMBR；所述第一会话用于传输第二终端设备的数据，所述第一终端设备为所述第二终端设备的中继设备；
所述处理单元还用于，根据所述UE粒度AMBR修改所述第一会话的AMBR。
本申请中为UE配置提供中继服务时的UE-AMBR、Session-AMBR，网络侧可以根据UE承担的“角色”来修改PDU会话的AMBR，以便对UE进行合理的带宽控制。当relay UE(例如，第一终端设备)为中继业务建立PDU会话，或者relay UE转发remote UE(例如，第二终端设备的)本身的PDU会话提供中继业务时，接入网设备可以根据relay UE提供中继服务时的UE-AMBR对该PDU会话(例如，第一会话)的AMBR进行修改，使得relay UE当前所有PDU会话的AMBR总和不能超过relay UE提供中继服务时的UE-AMBR，支持UE本身的业务的同时支持UE的中继业务。
结合第三方面，在第三方面的第一种可能的实现方式中，若所述第一会话为所述第 一终端设备的会话，所述处理单元通过所述第一终端设备的接入移动管理网元接收所述第一终端设备的会话管理网元发送的所述第一会话的AMBR；若所述第一会话为所述第二终端设备的会话，所述处理单元通过所述第二终端设备的接入移动管理网元接收所述第二终端设备的会话管理网元发送的所述第一会话的AMBR。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述通信装置还包括通信单元，所述通信单元用于，接收所述第一终端设备的接入移动管理网元发送的所述UE粒度AMBR。
结合第三方面或第三方面的第一或第二种可能的实现方式，在第三方面的第三种可能的实现方式中，所述通信装置包括通信单元，所述通信单元用于，若所述处理单元判断所述第一会话的AMBR大于所述第一终端设备的可用AMBR，则通过所述第一终端设备的接入移动管理网元向所述第一终端设备的会话管理网元发送第一信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第一信息用于请求所述第一终端设备的会话管理网元修改所述第一会话的AMBR；从所述第一终端设备的会话管理网元接收所述第一会话修改后的AMBR。
结合第三方面或第三方面的第一或第二种可能的实现方式，在第三方面的第四种可能的实现方式中，所述通信装置包括通信单元，若所述处理单元判断所述第一会话的AMBR大于所述第一终端设备的可用AMBR，则通过所述第二终端设备的接入移动管理网元向所述第二终端设备的会话管理网元发送第二信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第二信息用于请求所述第二终端设备的会话管理网元修改所述第一会话的AMBR；从所述第二终端设备的会话管理网元接收所述第一会话修改后的AMBR。
结合第三方面的第三或第四种可能的实现方式，在第三方面的第五种可能的实现方式中，所述处理单元还用于，根据所述第一会话修改后的AMBR对所述第一会话进行带宽控制。
结合第三方面的第五种可能的实现方式，在第三方面的第六种可能的实现方式中，所述处理单元用于，根据所述第一会话修改后的AMBR更新所述第一终端设备的可用AMBR；
所述通信单元用于，向所述第一终端设备发送所述第一终端设备更新后的可用AMBR。
第四方面，一种通信装置，该通信装置可以是接入移动管理网元，或者接入移动管理网元中的部件。所述通信装置包括：处理单元，获取第一终端设备提供中继服务的用户设备UE粒度聚合最大比特速率AMBR；通信单元，向所述第一终端设备的接入网设备发送所述第一终端设备提供中继服务的UE粒度AMBR。
本申请中，可以预先配置UE作为中继设备时的UE-AMBR(即提供中继服务的UE粒度AMBR)。UE提供中继服务时，UE的接入移动管理网元可以获取UE作为中继设备时的UE-AMBR，将UE作为中继设备时的UE-AMBR发送给UE的接入网设备，以便接入网设备根据UE-AMBR调整会话的AMBR。
结合第四方面，在第四方面的第二种可能的实现方式中，所述通信单元还用于，从所述第一终端设备接收中继能力信息；所述中继能力信息用于表征所述第一终端设备支持中继服务。
结合第四方面或第四方面的第一种可能的可能的实现方式，在第四方面的第二种可能的实现方式中，所述处理单元具体用于，从用户数据网元或统一数据存储网元获取所述第一终端设备的签约信息，所述第一终端设备的签约信息包括所述第一终端设备提供中继服务的UE粒度AMBR。
第五方面，提供了一种通信装置，包括至少一个处理器和存储器，所述至少一个处理器与所述存储器耦合；所述存储器，用于存储计算机程序；
所述至少一个处理器，用于执行所述存储器中存储的计算机程序，以使得所述装置执行如上述第一方面以及第一方面任意一种实现方式所述的方法。
第六方面，提供了一种通信装置，包括至少一个处理器和存储器，所述至少一个处理器与所述存储器耦合；所述存储器，用于存储计算机程序；
所述至少一个处理器，用于执行所述存储器中存储的计算机程序，以使得所述装置执行如上述第二方面以及第二方面任意一种实现方式所述的方法。
第七方面，提供了一种计算机可读存储介质，包括：计算机可读存储介质中存储有指令；当计算机可读存储介质在上述第三方面以及第三方面任意一种实现方式所述的通信装置上运行时，使得通信装置执行如上述第一方面以及第一方面任意一种实现方式所述的通信方法。
第八方面，提供了一种计算机可读存储介质，包括：计算机可读存储介质中存储有指令；当计算机可读存储介质在上述第四方面以及第四方面任意一种实现方式所述的通信装置上运行时，使得通信装置执行如上述第二方面以及第二方面任意一种实现方式所述的通信方法。
第九方面，提供了一种无线通信装置，该通信装置包括处理器，例如，应用于通信装置中，用于实现上述第一方面以及第一方面任意一种实现方式所述的方法，该通信装置例如可以是芯片系统。在一种可行的实现方式中，所述芯片系统还包括存储器，所述存储器，用于保存实现上述第一方面所述方法的功能必要的程序指令和数据。
第十方面，提供了一种无线通信装置，该通信装置包括处理器，例如，应用于通信装置中，用于实现上述第二方面以及第二方面任意一种实现方式所涉及的功能或方法，该通信装置例如可以是芯片系统。在一种可行的实现方式中，所述芯片系统还包括存储器，所述存储器，用于保存实现上述第二方面所述方法的功能必要的程序指令和数据。
上述方面中的芯片系统可以是片上系统(system on chip，SOC)，也可以是基带芯片等，其中基带芯片可以包括处理器、信道编码器、数字信号处理器、调制解调器和接口模块等。
第十一方面，提供了一种通信系统，所述通信系统包括第一终端设备、第二终端设备、上述第三方面、第三方面任意一种可能的实现方式、上述第四方面和第四方面任意一种可能的实现方式所述的通信装置。
一种可能的实现方式中，所述通信系统还包括会话管理网元。
附图说明
图1为本申请实施例提供的通信系统的架构图；
图2为本申请实施例提供的协议栈示意图；
图3为本申请实施例提供的中继示意图；
图4为本申请实施例提供的层2中继协议层示意图；
图5为本申请实施例提供的层2中继会话示意图；
图6为本申请实施例提供的层3中继协议层示意图；
图7为本申请实施例提供的层3中继会话示意图；
图8a为本申请实施例提供的通信装置的结构框图；
图8b为本申请实施例提供的通信装置的另一结构框图；
图9为本申请实施例提供的中继通信方法的流程示意图；
图10为本申请实施例提供的中继通信方法的另一流程示意图；
图11为本申请实施例提供的通信方法的另一流程示意图；
图12～图15为本申请实施例提供的通信装置的另一结构框图。
具体实施方式
参考图1，为本申请实施例适用的一种通信系统的网络架构示意图，该网络架构中包括接入网设备10、终端设备(图中仅示出了终端设备21、终端设备22)、接入管理网元30、会话管理网元40、用户面网元50、策略控制网元60、网络切片选择网元70、网络存储功能网元80、统一数据管理网元90、统一数据存储网元100、认证服务功能网元110、应用功能网元120，网络数据分析网元130、网络能力开放网元140以及连接运营商网络的数据网络(data network，DN)150。终端设备可通过接入网设备、用户面网元向数据网络发送业务数据，以及从数据网络接收业务数据。
其中，终端设备是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等。所述终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音和/或数据。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、移动互联网设备(mobile internet device，
MID)、可穿戴设备、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。终端设备有时也可以称为用户设备(user equipment，UE)、移动台和远方站等，本申请的实施例对终端设备所采用的具体技术、设备形态以及名称不做限定。
接入网设备，是网络中用于将终端设备接入到无线网络的设备。所述接入网设备可以为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。网络设备可以包括长期演进(long term evolution，LTE)系统或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，如传统的宏基站eNB和异构网络场景下的微基站eNB，或者也可以包括第五代移动通信技术(5th generation，5G)新无线(new radio，NR)系统中的下一代节点B(next generation node B，gNB)，或者还可以包括无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、传输接收点(transmission reception point，TRP)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base  band unit，BBU)、基带池BBU pool，或WiFi接入点(access point，AP)等，再或者还可以包括云接入网(cloud radio access network，CloudRAN)系统中的集中式单元
(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。在接入网设备包括CU和DU的分离部署场景中，CU支持无线资源控制(radio resource control，RRC)、分组数据汇聚协议(packet data convergence protocol，PDCP)、业务数据适配协议(service data adaptation protocol，SDAP)等协议；DU主要支持无线链路控制层(radio link control，RLC)、媒体接入控制层(media access control，MAC)和物理层协议。
接入管理网元(本申请实施例还可以称为接入移动管理网元)，主要用于移动网络中的终端的附着、移动性管理、跟踪区更新流程，接入管理网元终结了非接入层(non access stratum，NAS)消息、完成注册管理、连接管理以及可达性管理、分配跟踪区域列表(track area list，TA list)以及移动性管理等，并且透明路由会话管理(session management，SM)消息到会话管理网元。在第五代(5th generation，5G)通信系统中，接入管理网元可以是接入与移动性管理功能(access and mobility management function，AMF)，在未来的通信系统(如6G通信系统)中，移动性管理网元可以仍是AMF网元，或者也可以具有其它名称，本申请并不限定。
会话管理网元，主要用于移动网络中的会话管理，如会话建立、修改、释放。具体功能如为终端分配互联网协议(internet protocol，IP)地址、选择提供报文转发功能的用户面网元等。在5G通信系统中，会话管理网元可以是会话管理功能(session management function，SMF)，在未来的通信系统(如6G通信系统)中，会话管理网元可以仍是SMF网元，或者也可以具有其它名称，本申请并不限定。
用户面网元，主要用于对用户报文进行处理，如转发、计费、合法监听等。用户面网元也可以称为协议数据单元(protocol data unit，PDU)会话锚点(PDU session anchor，PSA)。在5G通信系统中，用户面网元可以是用户面功能(user plane function，UPF)，在未来的通信系统(如6G通信系统)中，用户面网元可以仍是UPF网元，或者也可以具有其它名称，本申请并不限定。
策略控制网元，包含用户签约数据管理功能、策略控制功能、计费策略控制功能、服务质量(quality of service，QoS)控制等。在5G通信系统中，策略控制网元可以是策略控制功能(policy control function，PCF)，在未来的通信系统(如6G通信系统)中，策略控制网元可以仍是PCF网元，或者也可以具有其它名称，本申请并不限定。
网络切片选择功能网元，主要用于为终端设备的业务选择合适的网络切片。在5G通信系统中，网络切片选择网元可以是网络切片选择功能(network slice selection function，NSSF)网元，在未来的通信系统(如6G通信系统)中，网络切片选择网元可以仍是NSSF网元，或者也可以具有其它名称，本申请并不限定。
网络存储功能网元，主要用于提供网元或网元所提供服务的注册和发现功能。在5G通信系统中，网络存储功能网元可以是网络仓库功能(network repository function，NRF)，在未来的通信系统(如6G通信系统)中，网络存储功能网元可以仍是NRF网元，或者也可以具有其它名称，本申请并不限定。
网络数据分析网元，可以从各个网络功能(network function，NF)，例如策略控制网元、会话管理网元、用户面网元、接入管理网元、应用功能网元(通过网络能力开放 功能网元)收集数据，并进行分析和预测。在5G通信系统中，网络数据分析网元可以是网络数据分析功能(network data analytics function，NWDAF)，在未来的通信系统(如6G通信系统)中，网络数据分析网元可以仍是NWDAF网元，或者也可以具有其它名称，本申请并不限定。
统一数据管理网元，主要用于管理终端设备的签约信息。在5G通信系统中，统一数据管理网元可以是统一数据管理(unified data management，UDM)，在未来的通信系统(如6G通信系统)中，统一数据管理网元可以仍是UDM网元，或者也可以具有其它名称，本申请并不限定。
统一数据存储网元，主要用于存储结构化的数据信息，其中包括签约信息、策略信息，以及有标准格式定义的网络数据或业务数据。在5G通信系统中，统一数据存储网元可以是统一数据存储(unified data repository，UDR)，在未来的通信系统(如6G通信系统)中，统一数据存储网元可以仍是UDR网元，或者也可以具有其它名称，本申请并不限定。
认证服务功能网元，主要用于对终端设备进行安全认证。在5G通信系统中，认证服务功能网元可以是认证服务器功能(authentication server function，AUSF)，在未来的通信系统(如6G通信系统)中，认证服务功能网元可以仍是AUSF网元，或者也可以具有其它名称，本申请并不限定。
网络能力开放网元，可以将网络的部分功能有控制地暴露给应用。在5G通信系统中，网络能力开放网元可以是网络能力开放功能(network exposure function，NEF)，在未来的通信系统(如6G通信系统)中，网络能力开放网元可以仍是NEF网元，或者也可以具有其它名称，本申请并不限定。
应用功能网元，可以向运营商的通信网络的控制面网元提供各类应用的服务数据，或者从通信网络的控制面网元获得网络的数据信息和控制信息。在5G通信系统中，应用功能网元可以是应用功能(application function，AF)，在未来的通信系统(如6G通信系统)中，应用功能网元可以仍是AF网元，或者也可以具有其它名称，本申请并不限定。
数据网络，主要用于为终端设备提供数据传输服务。数据网络可以是私有网络，如局域网，也可以是公用数据网(public data network，PDN)网络，如因特网(Internet)，还可以是运营商共同部署的专有网络，如配置的IP多媒体网络子系统(IP multimedia core network subsystem，IMS)服务。
应理解，上述网元或者功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。可选的，上述网元或者功能可以由一个设备实现，也可以由多个设备共同实现，还可以是一个设备内的一个功能模块，本申请实施例对此不作具体限定。
为方便说明，本申请后续，以接入管理网元为AMF网元，网络切片选择功能网元为NSSF网元，为例进行说明。进一步地，将AMF网元简称为AMF，NSSF网元简称为NSSF。即本申请后续所描述的AMF均可替换为接入管理网元，NSSFF均可替换为网络切片选择功能网元。
尽管图1未示出，终端设备21、终端设备22的核心网设备可以不同。例如，由不同的AMF分别对终端设备21、终端设备22进行接入、移动管理，或者，由不同的SMF 分别对终端设备21、终端设备22进行会话管控。
首先，对本申请实施例涉及的术语进行解释说明：
(1)服务质量(quality of service，QoS)参数
利用QoS参数可以用来修改网络QoS，为网络通信提供更好的服务，例如，可以通过修改QoS参数解决网络延迟和阻塞等问题，保证网络的高效运行。
UE可以为不同的业务建立PDU会话，不同的业务所需要的QoS参数是不同的。例如视频业务需要高带宽，而语音通信则需要保障可靠的低时延。当UE发起PDU会话建立请求或PDU会话更新请求，SMF可以根据UE的业务需求，为不同业务建立不同的QoS流(QoS Flow)，可以用QFI(QoS Flow Identifier)来标识QoS流。同一个QoS流对应的QoS需求是相同的，这些需求可以用QoS参数进行量化。例如，QoS参数可以是时延，带宽，丢包率等。还可以使用5QI(5G QoS Identifier)来标识这些QoS参数。
根据业务的需求，QoS参数还可以包括流总和速率(aggregate maximum bit rate，AMBR)。AMBR包括UE-AMBR和Session-AMBR。其中，UE-AMBR指的是UE对应的所有PDU Session可以达到的最大带宽，Session-AMBR指的是PDU会话对应的所有非保障比特速率的QoS流(Non-guaranteed bit rate QoS Flow，Non-GBR QoS Flow)可以达到的最大带宽。
(2)协议栈
图2为本申请实施例提供的协议栈示意图，不同的设备之间可以通过图2所示的协议层进行交互。参考图2，协议栈包括应用层(application layer)、协议数据单元(protocol data unit，PDU)层、网络协议(internet protocol，IP)层、业务数据适配协议(new radio-service data adaptation protocol，SDAP)层、分组数据汇聚协议(packet data convergence protocol，PDCP)层、无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层以及物理(physical，PHY)层。
(3)中继(relay)
本申请实施例中，中继可以理解为一个终端设备通过另外一个终端设备接入网络，与网络建立非直接连接(indirect connection)。其中，提供中继服务的终端设备可以称为中继UE(relay UE)，通过中继接入网络的终端设备可以称为远程UE(remote UE)。
图3为本申请实施例提供的中继架构图。参考图3，远程设备(remote UE)可以通过中继设备(relay UE)与接入网设备进行通信，从而与核心网建立非直接连接。图1所示的网络架构中，终端设备21可以作为relay UE，终端设备22可以作为remote UE。具体地，终端设备21通过uu链路与接入网设备10进行通信，终端设备21和终端设备22之间通过直连链路进行通信。终端设备21还可以为终端设备22提供中继服务，例如，终端设备21通过PC5接口接收终端设备22发送的数据，将终端设备22的数据转发给接入网设备10；或者，终端设备21通过uu链路接收接入网设备发送给终端设备22的数据，还可以通过PC5接口将接收到的数据转发给终端设备22。
(4)层2中继(L2relay)
图4是层2中继的协议栈示意图。参考图4，层2中继场景下relay UE在为remote UE转发数据包时，仅处理到PDCP层以下(不在PDCP层对数据包进行处理)就转发给接入网设备进行处理，可以确保remote UE和接入网设备之间的数据安全，避免remote UE的数据过多的暴露在relay UE处。
图5是层2中继的连接示意图。参考图5，一个relay UE可以连接多个remote UE并为这些remote UE提供层2中继转发。remote UE 1通过relay UE建立PDU会话1，relay UE可以通过remote UE 1的PDU会话1为remote UE 1提供中继服务，relay UE可以转发Remote UE 1的PDU会话1的业务数据。remote UE 2通过relay UE建立PDU会话2，relay UE可以利用remote UE 2的PDU会话2为remote UE 2提供中继服务。可见，在层2中继场景中，由remote UE的SMF对用于中继的会话进行会话管理。
(5)层3中继(L3relay)
图6是层3中继的协议栈示意图。参考图4，层3中继场景下relay UE在为remote UE转发数据包时，仅处理到IP层以下(不在IP层对数据包内容进行处理)就转发给接入网设备进行处理。接入网设备并不感知relay UE是否转发了remote UE的数据。
图7是层3中继的连接示意图。参考图7，一个relay UE可以连接多个remote UE并为这些remote UE提供层3中继转发。与层2中继不同的是，层3中继场景中relay UE使用自身的PDU会话为remote UE转发数据。可见，在层3中继场景中，由relay UE的SMF对用于中继的会话进行会话管理。
现有技术在为UE分配AMBR时，并不会考虑UE接入网络时承担的“角色”，导致为UE分配的AMBR可能不满足UE实际的业务需求。例如，为UE分配的AMBR过小，只能支持UE本身的业务，不能同时支持UE的中继业务。在层2中继或层3中继场景中，为了在保证UE自身业务的同时支持UE的中继业务，UE提供中继服务时的UE粒度AMBR(UE-AMBR)应该大于UE作为普通UE(即不提供中继服务)的UE-AMBR。当remote UE复用relay UE的PDU会话时，relay UE的Session-AMBR也应该比其作为普通UE的Session-AMBR要高。
此外，可能存在另一种可能：中继UE的UE-AMBR仅针对其本身的PDU会话AMBR的总和进行控制，而当远程UE通过中继UE连接到网络时，中继UE可能存在另一种UE-AMBR专门用于限制远程UE的PDU会话AMBR总和上限。
本申请实施例提供一种中继通信方法，为UE配置提供中继服务时的UE-AMBR、Session-AMBR，网络侧可以根据UE承担的“角色”来修改PDU会话的AMBR，以便对UE进行合理的带宽控制。当relay UE为中继业务建立PDU会话，或者relay UE转发remote UE本身的PDU会话提供中继业务时，接入网设备可以根据relay UE提供中继服务时的UE-AMBR对该PDU会话的AMBR进行修改，使得relay UE当前所有PDU会话的AMBR总和不能超过relay UE提供中继服务时的UE-AMBR，支持UE本身的业务的同时支持UE的中继业务。
此外，引入中继服务后，运营商可以根据UE所承担的“角色”进行差异化服务控制和计费。例如，当UE为其他UE提供中继服务时，可以单独控制该中继UE用于中继服务的UE-AMBR，从而限制该UE为其他UE提供中继服务所能使用的带宽上限，而不影响该UE正常使用本身的业务时所授权的带宽。
本申请实施例所述的终端设备，可以通过图8a中的通信装置810来实现。图8a所示为本申请实施例提供的通信装置810的硬件结构示意图。该通信装置810包括处理器8101以及至少一个通信接口(图8a中仅是示例性的以包括通信接口8103为例进行说明)，可选的，还包括存储器8102。其中，处理器8101、存储器8102以及通信接口8103之间互相连接。
处理器8101可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信接口8103，使用任何收发器一类的装置，用于与其他设备或通信网络进行通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器8102可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，也可以与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器8102用于存储执行本申请方案的计算机执行指令，并由处理器8101来控制执行。处理器8101用于执行存储器8102中存储的计算机执行指令，从而实现本申请下述实施例提供的意图处理方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器8101可以包括一个或多个CPU，例如图8a中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置810可以包括多个处理器，例如图8a中的处理器8101和处理器8106。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信装置810还可以包括输出设备8104和输入设备8105。输出设备8104和处理器8101通信，可以以多种方式来显示信息。例如，输出设备8104可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备8105和处理器8101通信，可以以多种方式接收用户的输入。例如，输入设备8105可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的通信装置810可以是一个通用设备或者是一个专用设备。在具体实现中，通信装置810可以是台式机、便携式电脑、网络服务器、掌上电脑(personal digital assistant，PDA)、移动手机、平板电脑、无线终端装置、嵌入式设备或有图8a中类似结构的设备。本申请实施例不限定通信装置810的类型。
需要说明的是，通信装置810可以是终端整机，也可以是实现终端上的功能部件或组件，也可以是通信芯片，例如基带芯片等。通信装置810是终端整机时，通信接口可以是射频模块。当通信装置810为通信芯片，通信接口8103可以是该芯片的输入输出接口电路，输入输出接口电路用于读入和输出基带信号。
图8b是一种通信装置的结构示意图。通信装置820可以是本申请实施例所述接入网设备。
通信装置包括至少一个处理器8201、至少一个收发器8203、至少一个网络接口8204和一个或多个天线8205。可选的，还包括至少一个存储器8202。处理器8201、存储器8202、收发器8203和网络接口8204相连，例如通过总线相连。天线8205与收发器8203相连。网络接口8204用于通信装置通过通信链路与其它通信设备相连，例如通信装置通过S1接口与核心网网元相连。在本申请实施例中，所述连接可包括各类接口、传输线或总线等，本实施例对此不做限定。
本申请实施例中的处理器，例如处理器8201，可以包括如下至少一种类型：通用中央处理器(Central Processing Unit，CPU)、数字信号处理器(Digital Signal Processor，DSP)、微处理器、特定应用集成电路专用集成电路(Application-Specific Integrated Circuit，ASIC)、微控制器(Microcontroller Unit，MCU)、现场可编程门阵列(Field Programmable Gate Array，FPGA)、或者用于实现逻辑运算的集成电路。例如，处理器8201可以是一个单核(single-CPU)处理器或多核(multi-CPU)处理器。至少一个处理器8201可以是集成在一个芯片中或位于多个不同的芯片上。
本申请实施例中的存储器，例如存储器8202，可以包括如下至少一种类型：只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically erasable programmabler-only memory，EEPROM)。在某些场景下，存储器还可以是只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
存储器8202可以是独立存在，与处理器8201相连。可选的，存储器8202也可以和处理器8201集成在一起，例如集成在一个芯片之内。其中，存储器8202能够存储执行本申请实施例的技术方案的程序代码，并由处理器8201来控制执行，被执行的各类计算机程序代码也可被视为是处理器8201的驱动程序。例如，处理器8201用于执行存储器8202中存储的计算机程序代码，从而实现本申请实施例中的技术方案。
收发器8203可以用于支持通信装置与终端设备之间射频信号的接收或者发送，收发器8203可以与天线8205相连。具体地，一个或多个天线8205可以接收射频信号，该收发器8203可以用于从天线接收所述射频信号，并将射频信号转换为数字基带信号或数字中频信号，并将该数字基带信号或数字中频信号提供给所述处理器8201，以便处理器8201对该数字基带信号或数字中频信号做进一步的处理，例如解调处理和译码处理。此外，收发器8203可以用于从处理器8201接收经过调制的数字基带信号或数字中频信号，并将该经过调制的数字基带信号或数字中频信号转换为射频信号，并通过一个或多个天线8205发送所述射频信号。具体地，收发器8203可以选择性地对射频信号进行一级或多级下混频处理和模数转换处理以得到数字基带信号或数字中频信号，所述下混频处理和模数转换处理的先后顺序是可调整的。收发器8203可以选择性地对经过调制的数字基带信号或数字中频信号时进行一级或多级上混频处理和数模转换处理以得到射频信号， 所述上混频处理和数模转换处理的先后顺序是可调整的。数字基带信号和数字中频信号可以统称为数字信号。收发器可以称为收发电路、收发单元、收发器件、发送电路、发送单元或者发送器件等等。
需要说明的是，通信装置820可以是通信装置整机，也可以是实现通信装置功能的部件或组件，也可以是通信芯片。当通信装置820为通信芯片，收发器8203可以是该芯片的接口电路，该接口电路用于读入和输出基带信号。
本申请实施例提供一种中继通信方法，如图9所示，所述方法包括以下步骤：
901、接入网设备获取第一终端设备提供中继服务的UE粒度AMBR。
其中，第一终端设备可以通过所述接入网设备与网络侧进行通信，第一终端设备还可以为其他终端设备提供中继服务，例如，第一终端设备为第二终端设备的中继设备，第二终端设备可以通过第一终端设备向接入网设备发送数据，第二终端设备可以通过第一终端设备接收接入网设备发送的数据。
第一终端设备提供中继服务的UE粒度AMBR可以是第一终端设备作为relay时的UE-AMBR(记为relay UE-AMBR)，是第一终端设备提供中继服务时AMBR的上限。第一终端设备作为中继设备时，当前会话的session-AMBR的总和不能超过第一终端设备作为中继设备的UE-AMBR(即第一终端设备提供中继服务的UE-AMBR)。其中，当前会话可以是第一终端设备提供中继服务的会话，也可以是第一终端设备的其他业务的会话。第一终端设备提供中继服务的会话包括第一终端设备为第二终端设备提供中继服务的会话，以及第一终端设备为其他远程设备(remote UE)提供中继服务的会话。第一终端设备为第二终端设备提供中继服务的会话可以是第一终端设备建立的PDU会话，也可以是第二终端设备建立的PDU会话。
具体实现中，接入网设备可以从第一终端设备的接入移动管理网元(例如，AMF)获取所述第一终端设备提供中继服务的UE粒度AMBR。区别于层2中继场景、层3中继场景，接入网设备可以通过以下两种方式获取第一终端设备的relay UE-AMBR：
第一种、层3中继场景中，接入网设备可以在注册流程、服务请求流程、基站切换流程、会话建立过程或会话更新过程中从第一终端设备的AMF获取到第一终端设备的relay UE-AMBR。
一种可能的实现方式中，第一终端设备在注册流程中提供自身的中继能力信息，第一终端设备的AMF可以从UDM(或UDR)获取第一终端设备提供中继服务的UE粒度AMBR。所述第一终端设备提供中继服务的UE粒度AMBR可以是第一终端设备作为中继设备时的UE粒度AMBR。
具体地，第一终端设备向AMF发送注册请求，所述注册请求包括终端设备的中继能力信息，所述中继能力信息用于表征第一终端设备支持中继服务，即第一终端设备可以作为中继为其他终端提供中继服务。所述中继能力信息可以是第一终端设备在PC5口的通信能力信息，表征第一终端设备可以与其他终端设备建立直连连接，以为其他终端设备提供中继服务。
此外，第一终端设备的AMF接收第一终端设备的注册请求后可以从UDM(或UDR)获取第一终端设备的签约信息。其中，所述第一终端设备的签约信息包括所述第一终端设备的relay UE-AMBR，即所述第一终端设备提供中继服务的UE粒度AMBR。可选的，所述第一终端设备的签约信息还可以包括所述第一终端设备提供中继服务的会话粒度 AMBR(记为relay session-AMBR)。
第一终端设备的AMF还可以通过N2消息向所述接入网设备发送所述第一终端设备的签约信息。
另一种可能的实现方式中，第一终端设备向第一终端设备的AMF发送会话建立请求或会话更新请求，请求为第一终端设备的中继业务建立新的PDU会话，或者，为第一终端设备的中继业务更新第一终端设备当前的PDU会话。第一终端设备的AMF接收会话建立请求或会话更新请求后，向第一终端设备的会话管理网元(例如，SMF)发送会话建立请求或会话更新请求。第一终端设备的会话管理网元接收会话建立请求或会话更新请求后，从UDM获取第一终端设备的签约信息。第一终端设备的会话管理网元还可以向第一终端设备的AMF发送会话建立响应或会话更新响应，会话建立响应或会话更新响应包括第一终端设备的签约信息。第一终端设备的AMF可以通过会话建立响应或会话更新响应向第一终端设备的接入网设备发送第一终端设备的签约信息。
其中，所述第一终端设备的签约信息包括所述第一终端设备的relay UE-AMBR，即所述第一终端设备提供中继服务的UE粒度AMBR。可选的，所述第一终端设备的签约信息还可以包括所述第一终端设备提供中继服务的会话粒度AMBR(记为relay session-AMBR)。
第二种、层2中继场景中，接入网设备可以在注册流程、服务请求流程、基站切换流程从第一终端设备的AMF获取到第一终端设备的relay UE-AMBR，或者，接入网设备通过配置更新的方式获取第一终端设备的relay UE-AMBR。
示例的，在第一终端设备注册流程中，第一终端设备的AMF可以从UDM获取第一终端设备的签约信息，并通过N2消息向所述接入网设备发送所述第一终端设备的签约信息。其中，所述第一终端设备的签约信息包括所述第一终端设备的relay UE-AMBR，即所述第一终端设备提供中继服务的UE粒度AMBR。
或者，接入网设备确定第一终端设备将提供中继业务，接入网设备本地未存储第一终端设备与中继业务相关的签约信息，或者，第一终端设备当前的UE-AMBR不能满足中继业务的需求，接入网设备则向第一终端设备的AMF发送配置更新请求。第一终端设备的AMF可以从UDM获取第一终端设备的签约信息，所述第一签约信息包括第一终端设备的relay UE-AMBR。第一终端设备的AMF还可以向接入网设备发送配置更新响应，所述配置更新响应包括所述第一终端设备的签约信息。
902、当第一终端设备通过第一会话为第二终端设备提供中继服务，会话管理网元获取第一会话的AMBR。
其中，所述第一会话用于承载第一终端设备的中继业务，第一终端设备可以通过第一会话向接入网设备转发来自第二终端设备的数据，或者，第一终端设备可以通过第一会话向第二终端设备转发来自接入网设备的数据。所述第一会话为第一终端设备的会话。
具体地，层3中继场景中，第一终端设备可以为中继业务新建PDU会话或更新当前的PDU会话，所述第一会话为第一终端设备新建的PDU会话或所述第一终端设备当前的PDU会话。
层2中继场景中，第二终端设备建立一个PDU会话，第一终端设备可以复用第二终端设备的PDU会话为第二终端设备提供中继服务，所述第一会话为第二终端设备的会话。
区别于层3中继、层2中继，会话管理网元获取第一会话的AMBR也有以下两种不 同的实现：
第一种、层3中继场景中，第一终端设备的会话管理网元获取所述第一终端设备的relay session-AMBR，将relay session-AMBR作为所述第一会话的AMBR。
一种可能的实现方式中，第一终端设备的会话管理网元通过获取第一终端设备的签约信息的方式获取第一终端设备的relay session-AMBR。
具体地，第一终端设备的会话管理网元通过所述第一终端设备的接入移动管理网元接收所述第一终端设备发送的会话建立请求或会话更新请求；所述会话建立请求用于请求所述会话管理网元建立所述第一会话，所述会话更新请求用于请求所述会话管理网元更新所述第一会话。
所述会话管理网元响应于所述会话建立请求或所述会话更新请求从用户数据管理网元(例如，UDM)获取所述第一终端设备的签约信息，所述签约信息包括第一终端设备的relay session-AMBR、relay UE-AMBR。
所述会话管理网元可以将所述会话粒度AMBR作为所述第一会话的AMBR。
另一种可能的实现方式中，第一终端设备的会话管理网元通过更新会话关联策略信息获取第一终端设备的relay session-AMBR，或者，通过更新策略和计费控制规则(policy and charging control rule，PCC rule)的方式获取第一终端设备的relay session-AMBR。
具体地，第一终端设备的会话管理网元通过所述第一终端设备的接入移动管理网元接收所述第一终端设备发送的会话建立请求或会话更新请求；所述会话建立请求用于请求所述会话管理网元建立所述第一会话，所述所述会话更新请求用于请求所述会话管理网元更新所述第一会话。
所述会话管理网元响应于所述会话建立请求或所述会话更新请求向策略计费控制网元发送会话管理策略关联请求(SM policy association establishment)或会话管理策略更改请求SM Policy Association Establishment or Modification)；
所述会话管理网元从所述策略计费控制网元接收会话策略信息；所述会话策略信息包括所述第一终端设备提供中继服务的会话粒度AMBR；
所述会话管理网元可以将所述会话粒度AMBR作为所述第一会话的AMBR。
需要说明的是，会话更新请求或会话建立请求可以携带所述第一会话的标识，UDM可以根据第一会话的标识确定第一会话用于中继业务，UDM还可以根据所述第一会话的标识确定第一终端设备的业务类型，确定所述第一终端设备的签约信息中与所述业务类型匹配的relay session-AMBR。
或者，会话更新请求或会话建立请求携带数据网络名称(data network name，DNN)，UDM可以根据DNN确定第一会话用于中继业务，UDM还可以根据DNN确定第一终端设备的业务类型，确定所述第一终端设备的签约信息中与所述业务类型匹配的relay session-AMBR。
可选的，所述会话建立请求或所述会话更新请求包括中继服务指示。UDM可以根据第一会话的标识确定第一会话用于中继业务，确定所述第一终端设备的签约信息中用于第一会话的relay session-AMBR。
第二种、层2中继场景中，第二终端设备的会话管理网元获取所述第二终端设备的session-AMBR，将第二终端设备的session-AMBR作为所述第一会话的AMBR。
一种可能的实现方式中，第二终端设备的会话管理网元通过获取第二终端设备的签 约信息的方式获取第二终端设备的session-AMBR。
第二终端设备的会话管理网元通过第二终端设备的接入移动管理网元接收所述第二终端设备发送的会话建立请求或会话更新请求；所述会话建立请求用于请求所述会话管理网元建立所述第一会话，所述会话更新请求用于请求所述会话管理网元更新所述第一会话。
第二终端设备的会话管理网元响应于所述会话建立请求或所述会话更新请求从用户数据管理网元获取所述第二终端设备的签约信息，所述签约信息包括所述第二终端设备的会话粒度AMBR(即第二终端设备的session-AMBR)。
第二终端设备的会话管理网元将所述会话粒度AMBR作为所述第一会话的AMBR。
另一种可能的实现方式中，第二终端设备的会话管理网元通更新会话相关策略或PCC规则的方式获取第一终端设备的relay session-AMBR。
具体地，第二终端设备的会话管理网元通过第二终端设备的接入移动管理网元接收所述第二终端设备发送的会话建立请求或会话更新请求；
第二终端设备的会话管理网元响应于所述会话建立请求或所述会话更新请求向策略计费控制网元发送会话管理策略关联请求或会话管理策略更改请求；
第二终端设备的会话管理网元从所述策略计费控制网元接收会话策略信息；所述会话策略信息包括所述第二终端设备的会话粒度AMBR；
第二终端设备的会话管理网元将所述会话粒度AMBR作为所述第一会话的AMBR。
需要说明的是，会话更新请求或会话建立请求可以携带所述第一会话的标识，UDM可以根据第一会话的标识确定第二终端设备的业务类型，确定所述第二终端设备的签约信息中与所述业务类型匹配的session-AMBR。
或者，会话更新请求或会话建立请求携带数据网络名称(data network name，DNN)，UDM可以根据DNN确定第二终端设备的业务类型，确定所述第二终端设备的签约信息中与所述业务类型匹配的session-AMBR。
903、会话管理网元通过接入移动管理网元向接入网设备发送所述第一会话的AMBR。
层3中继场景中，第一终端设备的会话管理网元通过第一终端设备的接入移动管理网元向接入网设备发送第一会话的AMBR。
层2中继场景中，第二终端设备的会话管理网元通过第二终端设备的接入移动管理网元向接入网设备发送第一会话的AMBR。
904、接入网设备获取第一会话的AMBR，根据第一终端设备提供中继服务的UE粒度AMBR修改所述第一会话的AMBR。
具体地，接入网设备判断第一终端设备提供中继服务的UE-AMBR能否支持当前的第一会话。若不能，则需要修改第一会话的AMBR。
区别于层3中继、层2中继，接入网设备修改第一会话的AMBR也有以下两种不同的实现：
第一种、层3中继场景中，接入网设备指示第一终端设备的会话管理网元修改第一会话的AMBR。
示例的，接入网设备可以记录第一终端设备作为中继设备时，当前会话的session-AMBR的总和，还可以参考relay UE-AMBR、当前会话的session-AMBR的总和对新建立的当前会话的AMBR进行修改。若接入网设备判断所述第一会话的AMBR大 于所述第一终端设备的可用AMBR，所述接入网设备则通过所述第一终端设备的接入移动管理网元向所述第一终端设备的会话管理网元发送第一信息，请求所述第一终端设备的会话管理网元修改所述第一会话的AMBR。
其中，第一终端设备的可用AMBR为第一终端设备提供中继服务的UE粒度AMBR与已被会话占用AMBR的差值。其中，已被会话占用AMBR可以是第一终端设备记录的当前所有当前会话的session-AMBR的总和。
示例的，relay UE-AMBR为10Mbps，UDM为第一会话分配的relay session-AMBR为3Mbps，第一终端设备当前除第一会话外的所有会话占用的AMBR为8Mbps。(10Mbps-8Mbps)<3Mbps，即第一终端设备的可用AMBR无法支持第一会话，接入网设备则请求第一终端设备的会话管理网元修改第一会话的AMBR。例如，修改第一会话的AMBR为2Mbps。
具体实现中，接入网设备还可以通过所述第一终端设备的接入移动管理网元向所述第一终端设备的会话管理网元发送第三信息，所述第三信息用于指示所述第一终端设备的可用AMBR，以便第一终端设备的会话管理网元根据所述第一终端设备的可用AMBR修改所述第一会话的AMBR。例如，第一会话修改后的AMBR小于等于所述第一终端设备的可用AMBR。
第二种、层2中继场景中，接入网设备指示第二终端设备的会话管理网元修改第一会话的AMBR。
示例的，若接入网设备判断所述第一会话的AMBR大于所述第一终端设备的可用AMBR，所述接入网设备则通过所述第二终端设备的接入移动管理网元向所述第二终端设备的会话管理网元发送第二信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第二信息用于请求所述第二终端设备的会话管理网元修改所述第一会话的AMBR。
具体实现中，接入网设备还可以通过所述第二终端设备的接入移动管理网元向所述第二终端设备的会话管理网元发送第四信息，所述第四信息用于指示所述第一终端设备的可用AMBR，以便第二终端设备的会话管理网元根据所述第一终端设备的可用AMBR修改所述第一会话的AMBR。例如，第一会话修改后的AMBR小于等于所述第一终端设备的可用AMBR。
示例的，relay UE-AMBR为10Mbps，UDM为第一会话分配的relay session-AMBR为3Mbps，第一终端设备当前除第一会话外所有当前会话占用的AMBR为8Mbps。(10Mbps-8Mbps)<3Mbps，即第一终端设备的可用AMBR无法支持第一会话，接入网设备则请求第一终端设备的会话管理网元修改第一会话的AMBR。例如，修改第一会话的AMBR为2Mbps。
另一种可能的实现方式中，接入网设备修改第一会话的AMBR。接入网设备还可以将修改后的AMBR发送给会话管理网元。会话管理网元接收接入网设备发送的修改后的AMBR，可以向接入网设备发送响应信息。所述响应信息可以指示会话管理网元允许第一接入网设备当前修改的AMBR。其中，层2中继场景中所述会话管理网元为第二终端设备的会话管理网元，层3中继场景中所述会话管理网元为第一终端设备的会话管理网元。
905、接入网设备根据修改后的AMBR对所述第一会话进行带宽控制。
具体实现中，接入网设备从所述第一终端设备的会话管理网元或所述第二终端设备的会话管理网元接收所述第一会话修改后的AMBR；
接入网设备还可以根据所述修改后的AMBR对所述第一会话进行带宽控制。
可选的，图9所示的方法还包括：所述接入网设备向所述第一终端设备发送可用的AMBR。
接入网设备发送的可用AMBR可以是第一终端设备最新的可用AMBR，即第一终端设备接入第一会话后UE-AMBR(提供中继服务的UE粒度AMBR)的剩余量。其中，第一会话的AMBR可以是修改后的，也可以是初始分配的。
示例的，第一终端设备的relay UE-AMBR(即第一终端设备提供中继服务时的UE粒度AMBR)为10Mbps，第一终端设备接入第一会话之前剩余可用UE-AMBR为3Mbps。假设第一会话的session-AMBR为2Mbps，则第一终端设备接入第一会话后剩余可用UE-AMBR为1Mbps，接入网设备向第一终端设备发送消息，指示第一终端设备提供终端服务的UE-AMBR的剩余量为1Mbps。
假设第一会话的session-AMBR为4Mbps，超过当前剩余可用UE-AMBR(3Mbps)，则可以修改第一会话的session-AMBR。例如，将第一会话的session-AMBR修改为1Mbps，则第一终端设备接入第一会话后剩余可用UE-AMBR为2Mbps，接入网设备向第一终端设备发送消息，指示第一终端设备提供终端服务的UE-AMBR的剩余量为2Mbps。
第一终端设备接收剩余可用AMBR后，可以在与其他终端设备的中继发现过程中告知其他终端当前可以支持的最大带宽。
参考图10，本申请实施例还提供一种中继通信方法。与图9所示方法不同的是，图10提供的中继通信方法仅适用于层3中继场景。其中，以第一终端设备为relay UE，第二终端设备为remote UE作为示例。remote UE可以通过relay UE接入网络，与网络建立非直连连接。relay UE可以建立或更新PDU会话，为remote UE提供中继服务。RAN可以根据UE的角色修改会话的AMBR。如图10所示，所述方法包括以下步骤：
1001、UDM/UDR配置UE的签约信息。
其中，UE的签约信息包括UE作为普通UE的QoS参数，以及UE作为Relay UE的QoS参数。例如，UE作为普通UE的UE-AMBR和/或Session-AMBR；UE作为中继UE的relay UE-AMBR和/或relay Session-AMBR。需要说明的是，UE作为普通UE可以理解为UE不提供中继服务。
UE的签约信息可以由UDM配置并存储，或者，UDM可以将UE的签约信息存储在统一数据存储库(unified data repository，UDR)网元中。当其他网元向UMD请求UE的签约信息时，UDM直接将签约信息发送给该网元，或者，UDM从UDR获取UE的签约信息之后向该网元发送UE的签约信息。当用户的签约信息发生变更时，UDM也可以将变更的UE签约信息通知给订阅了UE签约信息的网元。一种可能的实现方式中，UDM和UDR可以部署在一起。
1002、relay UE向AMF上报中继能力信息。
需要说明的是，步骤1002为可选步骤，所述AMF为relay UE的AMF，为relay UE提供服务。relay UE可以在注册到网络时，或请求网络服务时，或小区切换时，向AMF发送中继能力信息。所述中继能力信息指示relay UE支持中继服务，具备提供中继服务的能力。
例如，relay UE向AMF发送注册请求，所述注册请求包括relay UE的中继能力信息。
1003、AMF从UDM/UDR获取relay UE的签约信息。
其中，relay UE的签约信息中包括relay UE-AMBR。relay UE-AMBR是relay UE提供中继服务时，或relay UE作为中继设备时的UE粒度AMBR。可选的，AMF从UDM/UDR获取的签约信息还relay session-AMBR，即UE作为中继设备(或提供中继服务)时的会话粒度AMBR。
1004、AMF将relay UE签约信息中的relay UE-AMBR发送给RAN。
具体地，AMF可以将relay UE-AMBR作为relay UE上下文的一部分，在relay UE执行服务请求流程、注册流程或基站切换流程时，随N2消息发送给服务于relay UE的基站(例如，RAN)。
1005、remote UE与relay UE进行中继发现。
例如，当remote UE与RAN建立连接，且remote UE与RAN之间的Uu接口的通信质量不能满足通信需求，或者，remote UE处于网络覆盖范围外或处于非连接态(connection management-idle，CM-IDLE)，remote UE可以根据网络侧预配置的中继发现信息或本地预配置的中继发现信息向relay UE发起中继连接，完成中继发现。其中，中继发现信息用于建立中继连接(例如，remote UE与relay UE之间的直连连接，可以是PC5连接)，包括使用中继连接到网络的授权信息，发现中继节点的策略信息，用于中继通信的频谱信息等。remote UE可以在中继发现流程获取relay UE的标识。
可选的，中继发现过程中remote UE与relay UE交互信令可以包括需要进行的中继服务业务信息或QoS需求，具体如下：
(1)中继服务业务信息可以是需要relay UE为remote UE接入蜂窝网络的具体业务，例如VR视频转发业务、上网业务、Service ID或Application ID等。中继服务业务信息也可以是由网络侧预配置的中继服务代码(relay service code，RSC)，或者是DNN信息。
(2)QoS需求可以是remote UE需要请求的业务的QoS需求对应的QoS参数，例如，PC5 QoS参数和/或Uu QoS参数，PC5 QoS参数用于表征PC5口的服务质量需求，Uu QoS参数用于表征Uu口的服务质量需求。
1006、relay UE发起PDU会话建立请求或PDU会话更改请求。
层3中继通信场景中，remote UE需要使用relay UE的PDU会话，所以在此由relay UE建立或更改PDU会话。以下可以将relay UE请求建立或更新的会话称为第一会话。
可选的，PDU会话建立请求或PDU会话更改请求携带中继服务指示。所述中继服务指示用于表征relay UE将为remote UE提供中继服务，根据中继服务指示可以确定relay UE的角色为中继设备。其中，中继服务指示可以是一个明确的指示信息，或者是一个特定的DNN和/或切片信息的组合(该组合用于提供中继连接服务)。
PDU会话建立请求或PDU会话更改请求还可以包括：
(1)中继服务代码，用于指示UE-to-Network中继服务。中继服务代码还可以指示具体的中继服务业务内容，例如中继服务的Service ID或Application ID或DNN或切片信息；
(2)PC5 QoS参数，PC5 QoS参数可以是remote UE与relay UE进行中继发现过程中获取到的QoS参数。
1007、AMF向SMF转发PDU会话建立请求或PDU会话更改请求。
1008、SMF从UDM/UDR获取relay UE的签约信息，包括relay UE的relay
session-AMBR。
其中，relay session-AMBR是relay UE提供中继服务时使用的会话粒度AMBR。SMF可以将relay session-AMBR作为第一会话的AMBR。
需要说明的是，步骤1008为可选步骤。SMF也可以通过步骤1009、步骤1010获取relay session-AMBR。
1009、SMF通过PCF进行PCC规则更新或会话关联策略信息更新，获取relay session-AMBR。
具体实现中，SMF指示PCF进行PCC规则更新或会话关联策略信息更新，PCF响应于SMF的指示从UDM/UDR获取用户或会话相关的签约信息以生成或更新PCC规则或会话关联策略信息。PCF还可以向SMF发送生成或更新的PCC规则或会话关联策略信息，所述PCC规则或会话关联策略信息包括relay session-AMBR。SMF可以将其中的relay session-AMBR作为第一会话的AMBR。
可以理解的是，SMF要么执行步骤1008，直接从UDM/UDR获取relay session-AMBR，要么执行步骤1009，通过PCF获取relay session-AMBR。如果SMF执行步骤1008后，又执行了步骤1009，从PCF获取了Relay Session-AMBR，则SMF以从PCF获取的Relay Session-AMBR作为当前会话的AMBR值。
1010、根据relay UE-AMBR修改Session-AMBR。
具体地，RAN判断当前可用的UE-AMBR是否满足relay UE的中继服务需求。
可选的，SMF向RAN发送第三信息，所述第三信息用于指示所述第一会话为用于传输第二终端设备的数据，即指示第一会话用于中继业务。
示例的，SMF向RAN发送的N2消息中可以加入第三信息，指示该PDU会话用于中继业务。RAN接收N2消息后，可以根据第三信息确定该PDU会话的AMBR计入relay UE-AMBR的开销。也就是说，可以根据relay UE-AMBR修改该PDU会话的
session-AMBR。当relay UE-AMBR的剩余量不满足该PDU会话的session-AMBR时，修改该PDU会话的session-AMBR。
例如，RAN根据relay UE-AMBR和第一终端设备当前会话的session-AMBR的总和，确定第一终端设备当前可用的UE-AMBR。层3中继场景中，当前会话可以是relay UE提供中继服务的会话，也可以是relay UE的其他业务的会话。relay UE提供中继服务的会话包括relay UE为当前的remote UE提供中继服务的会话，以及relay UE为其他远程设备提供中继服务的会话。relay UE为当前的remote UE提供中继服务的会话是relay UE建立的PDU会话。
若第一会话的session-AMBR未超过第一终端设备当前可用的UE-AMBR，则确定满足relay UE的中继服务需求，不修改第一会话的session-AMBR；若第一会话的
session-AMBR超过第一终端设备当前可用的UE-AMBR，则确定不满足relay UE的中继服务需求，需要修改第一会话的session-AMBR。RAN可以修改第一会话的session-AMBR，也可以指示relay UE的SMF修改第一会话的session-AMBR。可选的，RAN还可以向relay UE的SMF发送relay UE当前可用的UE-AMBR(作为中继设备时的UE-AMBR的剩余可用AMBR)，以便relay UE的SMF根据relay UE当前可用的UE-AMBR修改第一会 话session-AMBR。
示例的，relay UE-AMBR为10Mbps，第一终端设备当前会话的session-AMBR的总和为7Mbps，第一终端设备当前可用的UE-AMBR为3(即10-7)Mbps。假设步骤1008或1009获取到的第一会话的session-AMBR为4Mbps，大于第一终端设备当前可用的UE-AMBR，则指示relay UE的SMF修改第一会话的session-AMBR。
1011、SMF完成PDU会话建立或更新后向AMF发送反馈消息。
反馈消息用于指示已建立或更改relay UE的PDU会话。可选的，若RAN指示relay UE的SMF修改第一会话的session-AMBR，则所述反馈消息可以包括SMF修改后的session-AMBR。
或者，RAN修改第一会话的session-AMBR，则所述反馈消息可以包括响应信息，指示SMF支持(或同意或允许)RAN修改的session-AMBR。
1012、AMF接收到SMF的反馈消息后，向RAN转发反馈消息。
1013、RAN通过无线资源控制(radio resource control，RRC)配置消息为relay UE分配无线资源。
此外，RRC配置消息还可以包括relay UE当前可用的UE-AMBR。
可选的，RRC消息还可以包括为remote UE配置IP地址及用于PC5通信的QoS参数等。
1014、relay UE向SMF发送远程UE报告信息。
具体地，远程UE报告信息包括remote UE的用户标识(remote UE ID)和分配的IP地址发送给SMF。一种可能的实现方式中，可以relay UE可以通过用户面UPF向SMF网元发送远程UE报告信息，或，通过AMF网元向SMF发送远程UE报告信息。
1015、SMF在接收到远程UE报告信息后，将remote UE的IP地址配置给UPF网元。
此外，SMF通过N4配置消息将第一会话修改后的Session-AMBR发送给UPF。
1016、remote UE通过relay UE与应用服务器建立数据通信连接。
图10所示的方法实现了层3中继功能。当relay UE需要执行中继服务时，网络侧根据relay UE-AMBR，修改relay UE的PDU会话的AMBR。
参考图11，本申请实施例还提供一种中继通信方法，与图9、图10所示方法不同的是，图11所示方法仅适用于层2中继场景。其中，以第一终端设备为relay UE，第二终端设备为remote UE作为示例。remote UE可以通过relay UE接入网络，与网络建立非直连连接。remote UE可以建立或更新PDU会话，relay UE通过该PDU会话为remote UE提供中继服务。RAN可以根据UE的角色修改会话的AMBR。如图11所示，所述方法包括以下步骤：
步骤1101到步骤1105同前文图10所示实施例的步骤1001到步骤1005，在此不做赘述。
1106、remote UE发起PDU会话建立请求或PDU会话更改请求。
具体地，remote UE与relay UE建立PC5连接后，remote UE通过Relay UE和RAN向remote UE的AMF发送PDU会话建立请求或PDU会话更改请求。
此外，remote UE还可以通过非接入层(non-access stratum，NAS)消息向remote UE的AMF发送中继业务请求，请求通过中继与网络建立连接。
一种可能的实现中，RAN可以获取到remote UE和relay UE的绑定关系。具体地， remote UE通过relay向RAN发送RRC消息，RAN收到relay UE转发的RRC消息后，将RRC消息中的NAS消息转发给remote UE的AMF。同时，RAN可以从RRC消息中获取到relay UE的标识，由此获得relay UE和remote UE的绑定关系。
1107、remote UE的AMF将PDU会话建立或PDU会话更改请求发送给remote UE的SMF，SMF根据该请求为remote UE建立或更改PDU会话。
需要说明的是，SMF根据该请求为remote UE建立或更改的PDU会话以下简称为第一会话，remote UE的SMF还可以从UDM/UDR获取remote UE的session-AMBR，将remote UE的session-AMBR作为第一会话的session-AMBR。
remote UE的SMF还可以向remote UE的AMF发送第一会话的session-AMBR。
1108、remote UE的AMF向RAN发送第一会话的session-AMBR。
1109、可选的，relay UE可以根据中继发现过程中获取到的PC5业务信息或QoS参数向RAN发起QoS参数更改流程，获取relay UE的relay UE-AMBR。
relay UE通过QoS参数更改请求消息发起QoS参数更改流程，QoS参数更改请求消息可以携带中继服务指示，中继服务指示用于表征relay UE将提供中继服务。RAN可以根据中继服务指示从relay UE的AMF获取UE作为中继设备的签约信息，包括UE作为中继设备的UE-AMBR，即本申请实施例所述的relay UE-AMBR。同时，QoS参数更改请求消息中还可以携带中继业务信息或者PC5 QoS需求。
1110、RAN从relay UE的AMF获取relay UE的relay UE-AMBR。
具体实现中，RAN首先判断本地的配置信息是否包含了relay UE用于中继服务的UE-AMBR。如果本地没有存储，RAN则向relay UE的AMF请求relay UE-AMBR。
需要说明的是，如果RAN没有执行步骤1104获取到relay UE的relay UE-AMBR，则执行1109、1110获取relay UE的relay UE-AMBR。
1111、RAN判断relay UE当前可用的UE-AMBR是否满足remote UE的中继服务需求。
具体地，RAN根据relay UE-AMBR和第一终端设备当前会话的session-AMBR的总和，确定第一终端设备当前可用的UE-AMBR。层2中继场景中，当前会话可以是relay UE提供中继服务的会话。relay UE提供中继服务的会话包括relay UE为当前的remote UE提供中继服务的会话，以及relay UE为其他远程设备提供中继服务的会话。relay UE为当前的remote UE提供中继服务的会话是remote UE建立的PDU会话。
若第一会话的session-AMBR未超过第一终端设备当前可用的UE-AMBR，则确定满足remote UE的中继服务需求，不修改第一会话的session-AMBR；若第一会话的session-AMBR超过第一终端设备当前可用的UE-AMBR，则确定不满足remote UE的中继服务需求，需要修改第一会话的session-AMBR。
示例的，relay UE-AMBR为10M，第一终端设备当前会话的session-AMBR的总和为7Mbps，第一终端设备当前可用的UE-AMBR为3(即10-7)Mbps。假设步骤1008或1009获取到的第一会话的session-AMBR为4Mbps，大于第一终端设备当前可用的UE-AMBR，则指示remote UE的SMF修改第一会话的session-AMBR。RAN还可以从remote UE的SMF接收修改后的session-AMBR。
一种可能的实现方式中，如果第一会话的session-AMBR超过第一终端设备当前可用的UE-AMBR，RAN则通过remote UE的AMF向remote UE的SMF发送无线资源反馈 信息。无线资源反馈信息用于指示RAN不支持的PDU会话或QoS流以及不支持原因(Cause)。可选的，还可以包括relay UE当前支持的session-AMBR，remote UE的SMF可以根据relay UE当前支持的session-AMBR修改第一会话的session-AMBR。
其中，无线资源反馈信息可以包括PDU会话ID或QFI(QoS Flow Identifier标识)，用来标识不支持的PDU会话或具体的QoS流。
1112、RAN向relay UE发送第一会话修改后的session-AMBR。
1113、RAN向relay UE发送更新的可用UE-AMBR。
步骤1113为可选步骤。具体地，relay UE的SMF修改第一会话的session-AMBR后，RAN还可以更新第一终端设备当前可用的UE-AMBR。示例的，relay UE-AMBR为10Mbps，第一终端设备当前会话的session-AMBR的总和为7Mbps，第一终端设备当前可用的UE-AMBR为3(即10-7)Mbps。SMF修改后的session-AMBR为2Mbps。则更新第一终端设备当前可用的UE-AMBR为1Mbps(即3-2)。
RAN还可以通过RRC配置消息通知relay UE当前可用的UE-AMBR。当其他remote UE需要与relay UE建立UE-to-Network中继服务时，在PC5交互信令中remote UE可以将中继业务带宽需求信息发送给relay UE，relay UE可以根据当前可用的UE-AMBR判断是否可以满足remote UE的中继服务需求。
1114、remote UE通过中继UE与应用服务器建立数据通信连接。
图11所示的方法实现了层2中继功能。当relay UE需要执行中继服务时，网络侧根据relay UE-AMBR，修改remote UE的PDU会话的AMBR。
在采用对应各个功能划分各个功能模块的情况下，图12示出上述实施例中所涉及的通信装置的一种可能的结构示意图。图12所示的通信装置可以是本申请实施例所述的接入网设备，也可以是接入网设备中实现上述方法的部件，或者，也可以是应用于接入网设备中的芯片。所述芯片可以是片上系统(System-On-a-Chip，SOC)或者是具备通信功能的基带芯片等。如图12所示，通信装置包括处理单元1201以及通信单元1202。处理单元可以是一个或多个处理器，通信单元可以是收发器或者通信接口。
处理单元1201，可用于支持通信装置执行上述方法实施例中的处理动作，具体的，可以执行图9至图11中由接入网设备执行的处理动作。例如可以用于支持接入网设备执行步骤901、步骤904和步骤905，或者步骤1010、步骤1111，和/或用于本文所描述的技术的其它过程。
通信单元1202，用于支持该接入网设备与其他通信装置之间的通信，具体可执行图9至图11中由接入网设备执行的发送和/或接收的动作，例如，支持接入网设备执行步骤903，步骤1004和步骤1012中的一个或者多个步骤，和/或用于本文所描述的技术的其它过程。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
如图13所示，通信装置还可以包括存储单元1203，存储单元1203用于存储通信装置的程序代码和/或数据。
处理单元1201可以包括至少一个处理器，通信单元1202可以为收发器或者通信接口，存储单元1203可以包括存储器。
在采用对应各个功能划分各个功能模块的情况下，图14示出上述实施例中所涉及的 通信装置的一种可能的结构示意图。图14所示的通信装置可以是本申请实施例所述的接入移动管理网元，也可以是接入移动管理网元中实现上述方法的部件，或者，也可以是应用于接入移动管理网元中的芯片。所述芯片可以是片上系统(System-On-a-Chip，SOC)或者是具备通信功能的基带芯片等。如图14所示，通信装置包括处理单元1401以及通信单元1402。处理单元1401可以是一个或多个处理器，通信单元1402可以是收发器或者通信接口。
处理单元1401，可用于支持通信装置执行上述方法实施例中的处理动作，具体的，可以执行图9至图11中由接入移动管理网元执行的处理动作。例如，用于支持接入移动管理网元获取UE作为中继设备的签约信息，包括UE作为中继设备的UE-AMBR，和/或用于本文所描述的技术的其它过程。
通信单元1402，用于支持接入移动管理网元与其他通信装置之间的通信，具体可执行图9至图11中由入移动管理网元执行的发送和/或接收的动作。例如，支持接入移动管理网元执行步骤1007，步骤1010，和/或用于本文所描述的技术的其它过程。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
如图15所示，通信装置还可以包括存储单元1403，存储单元1403用于存储通信装置的程序代码和数据。
处理单元1401可以包括至少一个处理器，通信单元1402可以为收发器或者通信接口，存储单元1403可以包括至少一个存储器。
需要说明的是，上述各个通信装置实施例中，各个单元也可以相应的称之为模块或者部件或者电路等。
本申请实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有指令；指令用于执行如图9或图10或图11所示的方法。
本申请实施例提供一种包括指令的计算机程序产品，当其在通信装置上运行时，使得通信装置执行如图9或图10或图11所示的方法。
本申请实施例一种无线通信装置，包括：无线通信装置中存储有指令；当无线通信装置在图8a、图8b、图12至图15所示的通信装置上运行时，使得通信装置执行如图9或图10或图11所示的方法。该无线通信装置可以为芯片。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将通信装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
本申请实施例中的处理器，可以包括但不限于以下至少一种：中央处理单元(central processing unit，CPU)、微处理器、数字信号处理器(DSP)、微控制器(microcontroller unit，MCU)、或人工智能处理器等各类运行软件的计算设备，每种计算设备可包括一个或多个用于执行软件指令以进行运算或处理的核。该处理器可以是个单独的半导体芯片，也可以跟其他电路一起集成为一个半导体芯片，例如，可以跟其他电路(如编解码电路、硬件加速电路或各种总线和接口电路)构成一个SoC(片上系统)，或者也可以作为一个ASIC的内置处理器集成在所述ASIC当中，该集成了处理器的ASIC可以单独封装或者也可以跟其他电路封装在一起。该处理器除了包括用于执行软件指令以进行运 算或处理的核外，还可进一步包括必要的硬件加速器，如现场可编程门阵列(field programmable gate array，FPGA)、PLD(可编程逻辑器件)、或者实现专用逻辑运算的逻辑电路。
本申请实施例中的存储器，可以包括如下至少一种类型：只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmabler-only memory，EEPROM)。在某些场景下，存储器还可以是只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
本申请中，“至少一个”是指一个或者多个。“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
在本申请所提供的几个实施例中，应该理解到，所揭露的数据库访问装置和方法，可以通过其它的方式实现。例如，以上所描述的数据库访问装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，数据库访问装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器执行本申请各个实施例所述方法的全部或部分步骤。而前 述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种中继通信方法，其特征在于，包括：
    接入网设备获取第一会话的聚合最大比特速率AMBR以及第一终端设备提供中继服务的用户设备UE粒度AMBR；所述第一会话用于传输第二终端设备的数据，所述第一终端设备为所述第二终端设备的中继设备；
    所述接入网设备根据所述UE粒度AMBR修改所述第一会话的AMBR。
  2. 根据权利要求1所述的方法，其特征在于，所述接入网设备获取第一会话的AMBR，包括：
    若所述第一会话为所述第一终端设备的会话，则所述接入网设备通过所述第一终端设备的接入移动管理网元接收所述第一终端设备的会话管理网元发送的所述第一会话的AMBR；或，
    若所述第一会话为所述第二终端设备的会话，则所述接入网设备通过所述第二终端设备的接入移动管理网元接收所述第二终端设备的会话管理网元发送的所述第一会话的AMBR。
  3. 根据权利要求1或2所述的方法，其特征在于，所述接入网设备获取所述第一终端设备提供中继服务的UE粒度AMBR，包括：
    接收所述第一终端设备的接入移动管理网元发送的所述UE粒度AMBR。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述接入网设备根据所述UE粒度AMBR修改所述第一会话的AMBR，包括：
    若所述第一会话的AMBR大于所述第一终端设备的可用AMBR，所述接入网设备则通过所述第一终端设备的接入移动管理网元向所述第一终端设备的会话管理网元发送第一信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第一信息用于请求所述第一终端设备的会话管理网元修改所述第一会话的AMBR；
    从所述第一终端设备的会话管理网元接收所述第一会话修改后的AMBR。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述接入网设备根据所述UE粒度AMBR修改所述第一会话的AMBR，包括：
    若所述第一会话的AMBR大于所述第一终端设备的可用AMBR，所述接入网设备则通过所述第二终端设备的接入移动管理网元向所述第二终端设备的会话管理网元发送第二信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第二信息用于请求所述第二终端设备的会话管理网元修改所述第一会话的AMBR；
    从所述第二终端设备的会话管理网元接收所述第一会话修改后的AMBR。
  6. 根据权利要求4或5所述的方法，其特征在于，所述方法还包括：
    所述接入网设备根据所述第一会话修改后的AMBR对所述第一会话进行带宽控制。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述接入网设备根据所述第一会话修改后的AMBR更新所述第一终端设备的可用AMBR。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述方法还包括：
    向所述第一终端设备发送所述第一终端设备的可用AMBR。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述方法还包括：
    从会话管理网元接收第三信息，所述第三信息用于指示所述第一会话为用于传输第二终端设备的数据。
  10. 一种中继通信方法，其特征在于，包括：
    接入移动管理网元获取第一终端设备提供中继服务的用户设备UE粒度聚合最大比特速率AMBR；
    所述接入移动管理网元向所述第一终端设备的接入网设备发送所述第一终端设备提供中继服务的UE粒度AMBR。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    所述接入移动管理网元从所述第一终端设备接收中继能力信息；所述中继能力信息用于表征所述第一终端设备支持中继服务。
  12. 根据权利要求10或11所述的方法，其特征在于，所述接入移动管理网元获取第一终端设备提供中继服务的UE粒度AMBR，包括：
    所述接入移动管理网元从用户数据管理网元或统一数据存储网元获取所述第一终端设备的签约信息，所述第一终端设备的签约信息包括所述第一终端设备提供中继服务的UE粒度AMBR。
  13. 一种通信装置，其特征在于，包括：
    处理单元，用于获取第一会话的聚合最大比特速率AMBR以及第一终端设备提供中继服务的用户设备UE粒度AMBR；所述第一会话用于传输第二终端设备的数据，所述第一终端设备为所述第二终端设备的中继设备；
    所述处理单元还用于，根据所述UE粒度AMBR修改所述第一会话的AMBR。
  14. 根据权利要求13所述的装置，其特征在于，
    若所述第一会话为所述第一终端设备的会话，所述处理单元通过所述第一终端设备的接入移动管理网元接收所述第一终端设备的会话管理网元发送的所述第一会话的AMBR；
    若所述第一会话为所述第二终端设备的会话，所述处理单元通过所述第二终端设备的接入移动管理网元接收所述第二终端设备的会话管理网元发送的所述第一会话的AMBR。
  15. 根据权利要求13或14所述的装置，其特征在于，所述通信装置还包括通信单元，
    所述通信单元用于，接收所述第一终端设备的接入移动管理网元发送的所述UE粒度AMBR。
  16. 根据权利要求13-15任一项所述的装置，其特征在于，所述通信装置包括通信单元，
    所述通信单元用于，若所述处理单元判断所述第一会话的AMBR大于所述第一终端设备的可用AMBR，则通过所述第一终端设备的接入移动管理网元向所述第一终端设备的会话管理网元发送第一信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第一信息用于请求所述第一终端设备的会话管理网元修改所述第一会话的AMBR；
    从所述第一终端设备的会话管理网元接收所述第一会话修改后的AMBR。
  17. 根据权利要求13-15任一项所述的装置，其特征在于，所述通信装置包括通信单元，
    若所述处理单元判断所述第一会话的AMBR大于所述第一终端设备的可用AMBR，则通过所述第二终端设备的接入移动管理网元向所述第二终端设备的会话管理网元发送第二信息；所述可用AMBR为所述UE粒度AMBR与已被会话占用AMBR的差值，所述第二信息用于请求所述第二终端设备的会话管理网元修改所述第一会话的AMBR；
    从所述第二终端设备的会话管理网元接收所述第一会话修改后的AMBR。
  18. 根据权利要求16或17所述的通信装置，其特征在于，所述处理单元还用于，根据所述第一会话修改后的AMBR对所述第一会话进行带宽控制。
  19. 根据权利要求18所述的通信装置，其特征在于，
    所述处理单元用于，根据所述第一会话修改后的AMBR更新所述第一终端设备的可用AMBR；
    所述通信单元用于，向所述第一终端设备发送所述第一终端设备更新后的可用AMBR。
  20. 一种通信装置，其特征在于，包括：
    处理单元，获取第一终端设备提供中继服务的用户设备UE粒度聚合最大比特速率AMBR；
    通信单元，向所述第一终端设备的接入网设备发送所述第一终端设备提供中继服务的UE粒度AMBR。
  21. 根据权利要求20所述的通信装置，其特征在于，所述通信单元还用于，从所述第一终端设备接收中继能力信息；所述中继能力信息用于表征所述第一终端设备支持中继服务。
  22. 根据权利要求20或21所述的通信装置，其特征在于，
    所述处理单元具体用于，从用户数据网元或统一数据存储网元获取所述第一终端设备的签约信息，所述第一终端设备的签约信息包括所述第一终端设备提供中继服务的UE粒度AMBR。
  23. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合；
    存储器，用于存储计算机程序；
    处理器，用于执行所述存储器中存储的计算机程序，以使得所述装置执行如权利要求1至9中任一项所述的方法，或如权利要求10至12中任意一项所述的方法被执行。
  24. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被处理器运行时，如权利要求1至9中任意一项所述的方法被执行，或如权利要求10至12中任意一项所述的方法被执行。
  25. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令，当所述计算机指令被运行时，使得如权利要求1至9任一项所述的方法被执行，或者使得如权利要求10至12中任意一项所述的方法被执行。
  26. 一种芯片，其特征在于，所述芯片包括处理器和接口电路，所述接口电路和所述处理器耦合，所述处理器用于运行计算机程序或计算机指令，使得如权利要求1至9任一项所述的方法被执行，或者使得如权利要求10至12中任意一项所述的方法被执行。
  27. 一种处理器，其特征在于，用于执行如权利要求1至9任一项所述的方法，或者使得如权利要求10至12中任意一项所述的方法被执行。
  28. 一种传输信息的装置，其特征在于，用于执行如权利要求1至9任一项所述方法。
  29. 一种传输信息的装置，其特征在于，用于执行如权利要求10至12任一项所述方法。
  30. 一种通信系统，其特征在于，包括如权利要求13至19中任一项所述的通信装置，和/或，如权利要求20至22中任一项所述的通信装置。
PCT/CN2021/112205 2020-08-12 2021-08-12 一种中继通信方法及通信装置 Ceased WO2022033543A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21855593.6A EP4185011A4 (en) 2020-08-12 2021-08-12 Relay communication method, and communication apparatus
US18/166,663 US20230189054A1 (en) 2020-08-12 2023-02-09 Relay communication method, and communication apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010809409.3 2020-08-12
CN202010809409.3A CN114079934B (zh) 2020-08-12 2020-08-12 一种中继通信方法及通信装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/166,663 Continuation US20230189054A1 (en) 2020-08-12 2023-02-09 Relay communication method, and communication apparatus

Publications (1)

Publication Number Publication Date
WO2022033543A1 true WO2022033543A1 (zh) 2022-02-17

Family

ID=80247704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/112205 Ceased WO2022033543A1 (zh) 2020-08-12 2021-08-12 一种中继通信方法及通信装置

Country Status (4)

Country Link
US (1) US20230189054A1 (zh)
EP (1) EP4185011A4 (zh)
CN (1) CN114079934B (zh)
WO (1) WO2022033543A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112469024B (zh) * 2019-09-09 2022-03-29 华为技术有限公司 一种会话管理的方法及装置
CN116349402A (zh) * 2021-02-05 2023-06-27 Oppo广东移动通信有限公司 状态转换方法、装置、设备及存储介质
CN117378278A (zh) * 2022-05-06 2024-01-09 北京小米移动软件有限公司 一种中继通信方法、接入方法、装置及设备
CN118945887A (zh) * 2023-05-11 2024-11-12 华为技术有限公司 一种通信方法、装置及计算机可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160135203A1 (en) * 2013-07-05 2016-05-12 Lg Electronics Inc. Method for selecting or reselecting relay for proximity service
CN109041137A (zh) * 2016-01-16 2018-12-18 华为技术有限公司 一种切换的方法、基站及终端设备
CN109168180A (zh) * 2017-08-11 2019-01-08 华为技术有限公司 通信方法及源基站、目标基站、核心网设备、终端设备
WO2020155172A1 (zh) * 2019-02-03 2020-08-06 Oppo广东移动通信有限公司 业务处理方法、装置、芯片及计算机程序

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101998520B (zh) * 2009-08-17 2013-09-11 华为技术有限公司 数据传输速率控制方法、装置及系统
GB201402308D0 (en) * 2014-02-11 2014-03-26 Nec Corp Communication system
GB2524301A (en) * 2014-03-19 2015-09-23 Nec Corp Communication system
WO2018129543A1 (en) * 2017-01-09 2018-07-12 Idac Holdings, Inc. Relay for wireless communication system
CN110650498B (zh) * 2018-06-26 2022-04-05 华为技术有限公司 一种速率调整方法及其装置、系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160135203A1 (en) * 2013-07-05 2016-05-12 Lg Electronics Inc. Method for selecting or reselecting relay for proximity service
CN109041137A (zh) * 2016-01-16 2018-12-18 华为技术有限公司 一种切换的方法、基站及终端设备
CN109168180A (zh) * 2017-08-11 2019-01-08 华为技术有限公司 通信方法及源基站、目标基站、核心网设备、终端设备
WO2020155172A1 (zh) * 2019-02-03 2020-08-06 Oppo广东移动通信有限公司 业务处理方法、装置、芯片及计算机程序

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4185011A4

Also Published As

Publication number Publication date
EP4185011A4 (en) 2024-01-10
CN114079934A (zh) 2022-02-22
US20230189054A1 (en) 2023-06-15
CN114079934B (zh) 2025-05-30
EP4185011A1 (en) 2023-05-24

Similar Documents

Publication Publication Date Title
US20230199550A1 (en) Relay Management Method and Communication Apparatus
CN114173368B (zh) 一种服务质量QoS的监测方法
WO2022041285A1 (zh) 一种模型数据传输方法及通信装置
WO2022033543A1 (zh) 一种中继通信方法及通信装置
US20240172084A1 (en) Data transmission method and apparatus
CN116866881A (zh) 一种通信方法及装置
WO2021097858A1 (zh) 一种通信方法及装置
WO2021134601A1 (zh) 一种会话建立的方法及装置
WO2022237505A1 (zh) 一种通信方法、设备及系统
WO2023020046A1 (zh) 一种通信方法及通信装置
WO2021208813A1 (zh) 一种通信方法及通信装置
US20250203675A1 (en) Method to handle qos in wireline wireless convergence
WO2023088118A1 (zh) 数据传输方法及装置
WO2022170798A1 (zh) 确定策略的方法和通信装置
CN115915196A (zh) 一种链路状态检测方法、通信装置及通信系统
US20250254124A1 (en) Wireless communication method, network element, and apparatus
US12185422B2 (en) Communication method and apparatus
WO2024012376A1 (zh) 一种通信方法、通信装置及通信系统
CN104756541A (zh) 一种无线网络的分流方法及设备
WO2021042381A1 (zh) 一种通信方法、装置及系统
WO2021138784A1 (zh) 一种接入网络的方法、装置及系统
WO2025167556A1 (zh) 一种通信方法及装置
WO2025167635A1 (zh) 通信方法与装置、相关网元
WO2023197737A1 (zh) 报文发送方法、pin管理方法、通信装置及通信系统
WO2024193166A1 (zh) 一种通信方法及装置

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: 21855593

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021855593

Country of ref document: EP

Effective date: 20230216

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Ref document number: 2021855593

Country of ref document: EP