WO2021163894A1 - Communication method and apparatus based on relay - Google Patents

Communication method and apparatus based on relay Download PDF

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Publication number
WO2021163894A1
WO2021163894A1 PCT/CN2020/075756 CN2020075756W WO2021163894A1 WO 2021163894 A1 WO2021163894 A1 WO 2021163894A1 CN 2020075756 W CN2020075756 W CN 2020075756W WO 2021163894 A1 WO2021163894 A1 WO 2021163894A1
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WIPO (PCT)
Prior art keywords
information
relay
communication
indicate
ran device
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PCT/CN2020/075756
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French (fr)
Chinese (zh)
Inventor
许胜锋
李濛
杨艳梅
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华为技术有限公司
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Priority to PCT/CN2020/075756 priority Critical patent/WO2021163894A1/en
Publication of WO2021163894A1 publication Critical patent/WO2021163894A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • 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 present invention relates to the field of communication technology, and in particular to a relay-based communication method and device.
  • UEs communicate through the PC5 interface, which can be used for information transmission on the data plane and the control plane.
  • the first UE may communicate with the network-side server through the second UE.
  • the first UE is also called a remote UE (Remote UE)
  • the second UE is also called a relay UE (Relay UE).
  • the remote UE communicates with the relay UE
  • the relay UE communicates with the network-side RAN device
  • the RAN device accesses the Data Network (DN) through the user plane function (UPF) network element.
  • the remote UE's indirect communication through the relay UE includes two forms: indirect communication based on layer 2 relay or layer 2 evolved relay and layer 3 based relay or layer 3 relay. layer 3 evolved relay) indirect communication.
  • layer 2 relay when the indirect communication method based on layer 2 relay is used, if the first remote UE and the second remote UE access the network through the same relay UE, the data flow of the first remote UE and the second remote UE The data stream of the remote UE will be mapped to the same data radio bear (DRB) or the same logical channel of the Uu interface (the radio interface between the relay UE and the RAN device).
  • DRB data radio bear
  • the relay UE and the RAN device use adaptation layer information to identify the data stream of the first remote UE and the data of the second remote UE respectively. flow. Therefore, in indirect communication based on layer 2 relay, both the relay UE and the RAN device need to have the ability to support layer 2 relay.
  • a remote UE when a remote UE selects a relay UE, it may select a relay UE that does not support the layer 2 relay capability; or, when the remote UE accesses the network through a layer 2 relay mode, the relay The RAN device of the cell where the UE resides may not support the ability of layer 2 relay, which causes the remote UE to be unable to access the network based on the indirect communication mode of layer 2 relay, thereby affecting user experience.
  • the embodiment of the present invention provides a relay-based communication method and device.
  • an embodiment of the present application provides a relay-based communication method.
  • the method includes: a first UE (for example, a relay UE) receives first information from a RAN device, where the first information is used to indicate the RAN The device supports adaptation layer communication, and the first UE sends second information to the second UE according to the first information, and the second information is used to indicate that the first UE supports providing a relay service for the second UE (for example, a remote UE).
  • the first UE can determine that the RAN device supports the adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, so as to ensure that the second UE adopts the layer 2 based on the first UE.
  • the subsequent indirect communication method is connected to the network, thereby improving the user experience.
  • the present application also discloses a relay-based communication method, the method includes: a second UE (for example, a remote UE) receives first indication information.
  • the first indication information is used to indicate that the first UE (for example, a relay UE) supports the provision of adaptation layer relay services for the communication between the second UE and the first RAN device, or the first indication information is used to indicate the first
  • the RAN device supports adaptation layer communication
  • the second UE determines according to the first indication information that the first UE provides a relay service for the second UE.
  • the second UE determines the first UE according to the received first indication information, which can ensure that the second UE uses the indirect communication method based on layer 2 relay to access the network through the first UE, thereby improving user experience .
  • the second UE when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, the second UE receives the first indication information, including : The second UE receives the first indication information from the first UE, the first indication information is determined according to the first information and the second information, the first information is used to indicate that the first RAN device supports adaptation layer communication, and the second information is used to indicate The first UE supports adaptation layer communication. In this way, the second UE can learn, according to the first indication information, that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device.
  • the second UE when the first indication information is used to indicate that the first RAN device supports communication at the adaptation layer, the second UE receives the first indication information, including: Receive the first instruction information.
  • the second UE can learn that the first RAN device supports adaptation layer communication according to the first indication information.
  • the second UE receives the second indication information
  • the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for the communication between the second UE and the second RAN device, or,
  • the second indication information is used to indicate that the second RAN device does not support adaptation layer communication. Therefore, the second UE will not select the third UE and the UE provides the relay service.
  • the second UE when the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for communication between the second UE and the second RAN device, the second UE receives the second indication information, Including: the second UE receives the second indication information from the third UE, the second indication information is determined according to the third information and/or the fourth information, the third information is used to indicate that the second RAN device does not support adaptation layer communication, and the fourth The information is used to indicate that the third UE does not support adaptation layer communication. Therefore, the second UE can learn that the third UE does not support the provision of adaptation layer relay services for communication between the second UE and the second RAN device according to the second indication information.
  • the second UE receiving the second indication information includes: The device receives the second indication information. Therefore, the second UE can learn that the second RAN device does not support adaptation layer communication according to the second indication information.
  • the present application also discloses a relay-based communication method.
  • the method includes: a UE (for example, a relay UE) receives first information from a first RAN device, and the first information is used to indicate the first RAN device Whether to support adaptation layer communication; if the first information is used to indicate that the first RAN device supports adaptation layer communication, the UE determines based on the first information to reside in the cell served by the first RAN device; or, if the first information is used to indicate The first RAN device does not support adaptation layer communication, and the UE determines to reselect a cell according to the first information.
  • a relay UE receives first information from a first RAN device, and the first information is used to indicate the first RAN device Whether to support adaptation layer communication; if the first information is used to indicate that the first RAN device supports adaptation layer communication, the UE determines based on the first information to reside in the cell served by the first RAN device; or, if the first information is used to indicate The first RAN
  • the UE when the UE selects a cell to camp on, by receiving the first information from the first RAN device of the cell, it can determine whether to camp on the cell. Through this method, it can be ensured that the first RAN device of the cell where the UE resides can support adaptation layer communication, thereby ensuring that the UE can be used as a relay UE that provides a layer 2 relay service.
  • the UE determines that the UE supports adaptation layer communication; or, the UE receives second information from the second RAN device, the second information is used to indicate that the UE is authorized to perform relay communication, and the second RAN device is in A RAN device that serves the UE before the UE accesses the first RAN device; or, the UE receives third information from the first RAN device, and the third information is used to indicate that the UE is authorized to perform relay communication.
  • this application also discloses a relay-based communication method.
  • the method includes: an AMF network element receives first information from a RAN device, the first information is used to indicate that the RAN device supports adaptation layer communication, and the AMF network element
  • the second information is received from the UE (for example, a relay UE), the second information is used to indicate that the UE supports adaptation layer communication, and the AMF network element sends the first information to the PCF network element according to the second information.
  • the RAN device 203 involved in this system is a device for providing 3GPP access functions for the relay UE 202, and is mainly responsible for functions such as radio resource management, service quality management, data compression, and encryption on the air interface side.
  • the RAN device 203 may include various forms of base stations, such as: macro base stations, micro base stations (also referred to as small stations), relay stations, and access points.
  • base stations such as: macro base stations, micro base stations (also referred to as small stations), relay stations, and access points.
  • the names of devices with base station functions may be different, such as eNB, Node B, and gNB.
  • the AMF 206 involved in this system can be responsible for terminal device registration, mobility management, and tracking area update procedures.
  • the AMF network element 206 When the AMF network element 206 provides services for the session in the terminal device, it will provide storage resources of the control plane for the session to store the session identifier, the SMF network element identifier associated with the session identifier, and so on.
  • AMF may also be called AMF equipment or AMF network element or AMF entity.
  • the embodiments of the present application may also be applicable to other future-oriented communication technologies.
  • the network architecture and business scenarios described in this application are intended to explain the technical solutions of this application more clearly, and do not constitute a limitation on the technical solutions provided by this application. Those of ordinary skill in the art will know that with the evolution of the network architecture and new business scenarios The technical solutions provided in this application are equally applicable to similar technical problems.
  • the first UE sends second information to the second UE according to the first information.
  • the second information is used to indicate that the first UE supports providing a relay service for the second UE.
  • the second UE is the remote UE in FIG. 2.
  • the manner in which the first UE supports the provision of relay services for the second UE can be combined with the control plane protocol stack of indirect communication based on layer 2 relay shown in Figure 4a and the non-direct communication based on layer 2 relay shown in Figure 4b.
  • the user plane protocol stack of direct communication is described.
  • step S302 can be implemented in any of the following three ways:
  • Manner 1 The first UE determines the second information according to the first information, and the first UE sends the second information to the second UE.
  • all relay UEs support adaptation layer communication by default. Therefore, after the first UE learns that the RAN device supports adaptation layer communication according to the first information, it is determined that the first UE can provide a relay for the second UE, so that the second UE can receive indirect communication based on the layer 2 relay. Into the network.
  • Manner 2 The first UE determines the second information according to the first information and the third information, and the first UE sends the second information to the second UE.
  • the third information is used to indicate that the first UE supports adaptation layer communication.
  • Manner 3 The first UE determines the second information according to the first information and the fourth information, and the first UE sends the second information to the second UE.
  • the fourth information is used to indicate that the first UE is authorized to perform relay communication.
  • the remote UE supporting communication at the adaptation layer can also be described as the remote UE supporting communication with the RAN device through the adaptation layer.
  • the first UE can determine that the RAN device supports adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, Therefore, it is ensured that the second UE accesses the network through the indirect communication mode based on the layer 2 relay through the first UE, thereby improving the user experience.
  • the Remote UE is the remote UE in Figure 2, that is, the second UE in Figure 3;
  • the Relay UE is the relay UE in Figure 2, that is, the first UE in Figure 3;
  • the RAN device is the second UE in Figure 2
  • the AMF network element is the AMF network element in Figure 2
  • the UPF network element is the UPF network element in Figure 2.
  • the first RAN device sends first information to the first UE.
  • the first UE receives the first information from the first RAN device.
  • the first information is used to indicate that the first RAN device supports adaptation layer communication.
  • For the first information reference may be made to the description of the first information in step S301 in FIG. 3, which will not be repeated here.
  • the first information may be sent through a system information broadcast (SIB) message.
  • SIB system information broadcast
  • the first UE camps on the cell served by the first RAN device.
  • the relay discovery message is used to request discovery of a relay UE that can provide a relay for the second UE.
  • the first UE determines second information.
  • the manner of determining the second information by the first UE may refer to any one of the three manners of determining the second information in step S302 in FIG. 3, which will not be repeated here.
  • the first UE sends a relay response message to the second UE.
  • step 504 is not executed.
  • the first UE after the first UE receives the relay discovery message sent by the second UE, according to the second determination that the first UE supports the provision of a relay service for the second UE, it returns a relay response message to the second UE.
  • the relay UE selected by the second UE can support the relay service based on the layer 2 relay, thereby ensuring that the second UE can access the network based on the indirect communication mode of the layer 2 relay.
  • the first UE does not return a relay response message, which can ensure that the relay UE that the second UE can select supports
  • the relay UE of layer 2 relay can save signaling.
  • the first UE determines second information.
  • the manner of determining the second information by the first UE may refer to any one of the three manners of determining the second information in step S302 in FIG. 3, which will not be repeated here.
  • the first UE sends a relay discovery message to the second UE.
  • the relayed message includes the second information in step 505.
  • step 506 is not executed.
  • the second UE performs relay selection.
  • the second UE selects the first UE as the relay UE according to the second information.
  • the method further includes: the second UE sends indication information to the first UE, and the indication information is used to notify the first UE that the second UE has selected the second UE.
  • a UE provides a relay service.
  • the first UE can determine that the RAN device supports adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, thereby ensuring that the second UE adopts The indirect communication method based on layer 2 relay accesses the network, thereby improving the user experience.
  • Fig. 6 is a flowchart of another relay-based communication method provided by an embodiment of the application.
  • the second UE receives first indication information, the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, or the first indication information Used to instruct the first RAN device to support adaptation layer communication; the second UE determines according to the first indication information that the first UE provides a relay service for the second UE.
  • FIG. 6 may include any of the following implementation scenarios: when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, as shown in the scenario in FIG.
  • steps 601 to 603 are included; when the first indication information is used to indicate that the first RAN device supports adaptation layer communication, as shown in scenario d in FIG. 6, steps 604 and 605 are included.
  • FIG. 6 will be described in conjunction with FIG. 2, FIG. 3 and FIG. 5.
  • scenario c including:
  • the first RAN device sends first information to the first UE.
  • the first UE receives the first information from the first RAN device.
  • the first UE determines first indication information according to the first information and the fifth information.
  • the fifth information is used to indicate that the first UE supports adaptation layer communication.
  • the first indication information is used to indicate that the first UE supports providing an adaptation layer relay service for the communication between the second UE and the first RAN device.
  • the first UE sends first indication information to the second UE.
  • the first UE sends the first indication information to the second UE through a relay response message or a relay discovery message.
  • the first UE determines whether the first UE can provide the adaptation layer relay service for the second UE.
  • the first RAN device only forwards the indication information that the first RAN device supports adaptation layer communication through the first UE to the second UE, and the second UE determines whether the first UE can provide adaptation for the second UE. Layer relay service.
  • scenario d including:
  • the first indication information is used to indicate that the first RAN device supports adaptation layer communication.
  • the first UE sends first indication information to the second UE.
  • the first UE may send the first indication information to the second UE through a relay response message or a relay discovery.
  • This embodiment also includes step 606.
  • the second UE determines, according to the first indication information, that the first UE provides a relay service for the second UE.
  • the method further includes: the second UE knows that the first UE supports adaptation layer communication, and/or the second UE knows that the first UE is authorized to perform relay communication.
  • the second UE learns through the first indication information in step 603 or step 605 that the first UE supports adaptation layer communication, and/or the second UE learns that the first UE is authorized to perform relay communication.
  • the method for the second UE to determine that a first UE provides a relay service for the second UE may refer to the description in step 507, which will not be repeated here.
  • the second UE can select the first UE that can provide layer 2 relay according to the first indication information, thereby ensuring that the second UE adopts the indirect communication method based on layer 2 relay through the first UE Access to the network, thereby improving the user experience.
  • the method further includes either scenario e or scenario f: the second UE receives second indication information, and the second indication information is used to indicate that the third UE does not support the second UE and the second RAN device. Communication provides an adaptation layer relay service, or the second indication information is used to indicate that the second RAN device does not support adaptation layer communication.
  • the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for the communication between the second UE and the second RAN device, as shown in scenario c in FIG. 6, steps 607 to 609 are included;
  • steps 610 and 611 are included.
  • scenario e including:
  • the second RAN device sends third information to the third UE.
  • the third UE receives the third information from the second RAN device.
  • the third information is used to indicate that the second RAN device does not support adaptation layer communication.
  • the third information may be sent through a SIB message.
  • the third UE camps on the cell served by the second RAN device.
  • the second RAN device learns that the first UE can act as a relay according to the relay authorization information of the third UE before sending the third information, and the relay authorization information of the third UE is obtained from the PCF network element.
  • the third information may be sent through an RRC message.
  • the second RAN device receives the relay authorization information of the third UE from the PCF network element through the AMF network element, and learns that the third UE can After acting as a relay, the second RAN device sends third information to the third UE.
  • the third UE determines the second indication information according to the third information and/or the fourth information.
  • the fourth information is used to indicate that the third UE does not support adaptation layer communication.
  • the second indication information is used to indicate that the third UE does not support providing an adaptation layer relay service for the communication between the second UE and the second RAN device.
  • the third UE sends second indication information to the second UE.
  • the third UE determines whether the third UE can provide the adaptation layer relay service for the second UE.
  • the second RAN device only forwards the indication information that the second RAN device does not support adaptation layer communication to the second UE through the third UE, and the second UE determines whether the third UE can provide the second UE with adaptation information. Distribution layer relay service.
  • step 610 Since the second indication information is the same as the third information in step 607 at this time, in step 610, reference may be made to the description of sending the third information by the second RAN device to the third UE in step 607, which will not be repeated here.
  • the third UE sends second indication information to the second UE.
  • the third UE may send the second indication information to the second UE through a relay response message or a relay discovery.
  • the second UE can learn the third UE that cannot support layer 2 relay, so that when the second UE selects the relay UE, it avoids selecting the third UE, thereby ensuring that the second UE can
  • the indirect communication method based on layer 2 relay is used to access the network, thereby improving the user experience.
  • FIG. 7 is a flowchart of another relay-based communication method provided by an embodiment of the application. This method can be applied to the communication system shown in FIG. 2. With this method, when the first UE selects a cell to camp on, by receiving the sixth information from the first RAN device of the cell, it can be determined to camp on the cell or to reselect the cell. As shown in Figure 7, the method may include:
  • the first UE receives sixth information from the first RAN device, where the sixth information is used to indicate whether the first RAN device supports adaptation layer communication.
  • the first UE may be the relay UE in FIG. 2.
  • the sixth information may be sent through a SIB message or an RRC message.
  • the first UE determines based on the sixth information to camp on the cell served by the first RAN device; or, if the sixth information is used to indicate the first RAN The device does not support adaptation layer communication, and the first UE determines the cell to be reselected according to the first information.
  • the first UE determines to camp on a cell served by the first RAN device, it can also be understood that the first UE determines that the first RAN device serves the first UE.
  • the first UE also determines to camp on the cell according to the signal strength of the cell served by the first RAN device. That is, only when the sixth information is used to indicate that the first RAN device supports adaptation layer communication, and the signal strength of the cell served by the first RAN device meets the access requirements of the first UE, the first UE determines to camp on The cell. If the signal strengths of multiple cells all meet the access requirement of the first UE, the first UE determines, according to the sixth information, to camp on the cell served by the first RAN device supporting the adaptation layer communication.
  • the method further includes any one of the following three situations:
  • the first case the first UE determines that the UE supports adaptation layer communication
  • the second case the first UE receives second information from the second RAN device, the second information is used to indicate that the first UE is authorized to perform relay communication, where the second RAN device is before the UE accesses the first RAN device RAN equipment serving the first UE;
  • the third case the first UE receives third information from the first RAN device, and the third information is used to indicate that the first UE is authorized to perform relay communication. For example, when the first UE accesses the cell served by the first RAN device, it does not consider whether the first RAN device supports adaptation layer communication, and when the first UE camps on the cell successfully, it receives the relay authorization information of the first UE from the AMF, According to the sixth information, it is determined whether to continue camping on the cell or to perform cell reselection.
  • the first UE when the first UE selects a cell to camp on, by receiving the sixth information from the first RAN device of the cell, it can determine whether to camp on the cell.
  • This method can ensure that the first RAN device of the cell where the first UE resides can support adaptation layer communication, thereby ensuring that the first UE can serve as a relay UE that provides a layer 2 relay service.
  • FIG. 8 is a flowchart of another relay-based communication method provided by an embodiment of the application.
  • the PCF network element obtains the first information that the RAN device supports communication at the adaptation layer, thereby ensuring that the PCF network element is authorized to act as a relay.
  • the first UE of the UE may provide a layer 2 relay-based relay service.
  • FIG. 8 will be described in conjunction with FIG. 2 and FIG. 5.
  • the AMF network element obtains first information.
  • the RAN device sends the first information to the AMF network element.
  • the AMF network element receives the first information from the RAN device.
  • the first information is used to indicate that the RAN device supports adaptation layer communication.
  • the first information reference may be made to the description of the first information in step S301 in FIG. 3, which will not be repeated here.
  • the RAN device when the RAN device performs the N2 interface establishment process with the AMF network element, it sends the first information to the AMF network element through the interface establishment message.
  • the AMF network element determines according to the first information that the RAN device supports adaptation layer communication, and sends the first information to the first UE.
  • the network management device configures the first information to the AMF network element. For example, the network management device obtains information from the RAN device that the RAN device supports communication at the adaptation layer.
  • the AMF network element sends the first information to the PCF network element.
  • the PCF network element receives the first information from the AMF network element.
  • the AMF network element sends the first information to the PCF network element through a policy acquisition message.
  • the PCF network element determines seventh information according to the first information and the subscription information of the first UE.
  • the seventh information is used to indicate that the first UE is authorized to perform relay communication when camping in the cell served by the RAN device.
  • the seventh information is used to indicate that the first UE is authorized to camp on the cell corresponding to the RAN device to perform relay communication, or in other words, the seventh information is used to indicate that the first UE is authorized to be the second UE and the Communication between RAN devices provides relay services.
  • the PCF determines that the first UE can be authorized as a relay UE not only to consider the relay authorization information in the subscription information of the first UE, but also to determine that the RAN device accessed by the first UE supports adaptation layer communication.
  • the PCF network element obtains the subscription information of the first UE from the UDR.
  • the subscription information is used to indicate that the first UE is authorized to perform relay communication.
  • the PCF network element sends seventh information to the first UE.
  • the first UE receives the seventh information from the PCF network element.

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Abstract

The present application relates to the technical field of wireless communication, and provides a communication method based on a relay. The method comprises: a first UE receiving first information from an RAN device, wherein the first information is used for indicating that the RAN device supports adaptation layer communication; and the first UE sending second information to a second UE according to the first information, wherein the second information is used for indicating that the first UE supports providing a relay service for the second UE. By means of the solution provided by the present embodiment, it can be ensured that a second UE can access a network by means of a first UE in a layer 2 based relay non-direct communication mode, thereby improving the user experience.

Description

一种基于中继的通信方法及装置Communication method and device based on relay 技术领域Technical field
本发明涉及通信技术领域，特别涉及一种基于中继的通信方法及装置。The present invention relates to the field of communication technology, and in particular to a relay-based communication method and device.
背景技术Background technique
随着移动通信的高速发展，视频聊天、虚拟现实/增强现实(virtual reality/augmented reality,VR/AR)等新业务的普遍使用提高了用户对带宽的需求。设备到设备(Device-to-Device，D2D)通信允许用户设备(User Equipment，UE)之间直接进行通信，可以在小区网络的控制下与小区用户共享频谱资源，有效地提高了频谱资源的利用率。With the rapid development of mobile communications, the widespread use of new services such as video chat, virtual reality/augmented reality (VR/AR), etc., has increased users' demand for bandwidth. Device-to-Device (D2D) communication allows direct communication between User Equipment (UE), and can share spectrum resources with cell users under the control of the cell network, effectively improving the utilization of spectrum resources Rate.
在D2D通信中，UE之间通过PC5接口进行通信，可用于数据面和控制面的信息传输。当第一UE处于网络覆盖之外或与无线网络(radio access network,RAN)设备间通信信号不好时，该第一UE可以通过第二UE实现与网络侧服务器的通信。其中，第一UE又称为远端UE(Remote UE)，第二UE又称为中继UE(Relay UE)。如图1所示，通过远端UE与中继UE通信，中继UE与网络侧RAN设备通信，RAN设备通过用户面功能(user plane function，UPF)网元访问数据网络(Data Network，DN)，从而实现远端UE与网络间的通信。In D2D communication, UEs communicate through the PC5 interface, which can be used for information transmission on the data plane and the control plane. When the first UE is outside the network coverage or the communication signal with the radio access network (RAN) device is not good, the first UE may communicate with the network-side server through the second UE. Among them, the first UE is also called a remote UE (Remote UE), and the second UE is also called a relay UE (Relay UE). As shown in Figure 1, the remote UE communicates with the relay UE, the relay UE communicates with the network-side RAN device, and the RAN device accesses the Data Network (DN) through the user plane function (UPF) network element. , So as to realize the communication between the remote UE and the network.
目前，远端UE通过中继UE进行非直接通信包括两种形式：基于层2中继(layer 2 based relay或layer 2 evolved relay)的非直接通信和基于层3中继(layer 3 based relay或layer 3 evolved relay)的非直接通信。其中，当使用基于层2中继的非直接通信方式时，若第一远端UE和第二远端UE通过同一中继UE接入到网络，则第一远端UE的数据流和第二远端UE的数据流会映射到Uu接口(中继UE与RAN设备之间的无线接口)的同一个数据无线承载(Data radio bear,DRB)或同一个逻辑信道上。此时，为了区分不同远端UE的数据流，中继UE与RAN设备之间通过使用适配层(adaptation layer)的信息分别标识第一远端UE的数据流和第二远端UE的数据流。因此，在基于层2中继的非直接通信中，中继UE和RAN设备都需要具备支持层2中继的能力。At present, the remote UE's indirect communication through the relay UE includes two forms: indirect communication based on layer 2 relay or layer 2 evolved relay and layer 3 based relay or layer 3 relay. layer 3 evolved relay) indirect communication. Among them, when the indirect communication method based on layer 2 relay is used, if the first remote UE and the second remote UE access the network through the same relay UE, the data flow of the first remote UE and the second remote UE The data stream of the remote UE will be mapped to the same data radio bear (DRB) or the same logical channel of the Uu interface (the radio interface between the relay UE and the RAN device). At this time, in order to distinguish the data streams of different remote UEs, the relay UE and the RAN device use adaptation layer information to identify the data stream of the first remote UE and the data of the second remote UE respectively. flow. Therefore, in indirect communication based on layer 2 relay, both the relay UE and the RAN device need to have the ability to support layer 2 relay.
在现有技术中，远端UE在选择中继UE时，可能会选择到不支持层2中继能力的中继UE；或者，远端UE通过层2中继方式接入网络时，中继UE所驻留的小区的RAN设备可能不支持层2中继的能力，导致该远端UE不能基于层2中继的非直接通信方式接入网络，从而影响了用户体验。In the prior art, when a remote UE selects a relay UE, it may select a relay UE that does not support the layer 2 relay capability; or, when the remote UE accesses the network through a layer 2 relay mode, the relay The RAN device of the cell where the UE resides may not support the ability of layer 2 relay, which causes the remote UE to be unable to access the network based on the indirect communication mode of layer 2 relay, thereby affecting user experience.
发明内容Summary of the invention
本发明实施例提供了一种基于中继的通信方法及装置。The embodiment of the present invention provides a relay-based communication method and device.
一方面，本申请的实施例提供了一种基于中继的通信方法，该方法包括：第一UE(例如，中继UE)从RAN设备接收第一信息，其中，第一信息用于指示RAN设备支持适配层通信，第一UE根据第一信息向第二UE发送第二信息，第二信息用于指示第一UE支持为第二UE(例如，远端UE)提供中继服务。In one aspect, an embodiment of the present application provides a relay-based communication method. The method includes: a first UE (for example, a relay UE) receives first information from a RAN device, where the first information is used to indicate the RAN The device supports adaptation layer communication, and the first UE sends second information to the second UE according to the first information, and the second information is used to indicate that the first UE supports providing a relay service for the second UE (for example, a remote UE).
根据上述方法，第一UE通过从RAN设备接收第一信息，可以确定RAN设备支持适配层通信，并向第二UE发送第二信息，从而保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the above method, the first UE can determine that the RAN device supports the adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, so as to ensure that the second UE adopts the layer 2 based on the first UE. The subsequent indirect communication method is connected to the network, thereby improving the user experience.
在一种可能的设计中，第一UE根据第一信息确定第二信息，第一UE向第二UE发送第二信息；或者，第一UE根据第一信息和第三信息确定第二信息，第一UE向第二UE发送第二信息，第三信息用于指示第一UE支持适配层通信；或者，第一UE根据第一信息和第四信息确定第二信息，第一UE向第二UE发送第二信息，第四信息用于指示第一UE被授权执行中继通信。由此，第一UE可以确定第二信息。In a possible design, the first UE determines the second information according to the first information, and the first UE sends the second information to the second UE; or, the first UE determines the second information according to the first information and the third information, The first UE sends second information to the second UE, and the third information is used to indicate that the first UE supports adaptation layer communication; or, the first UE determines the second information according to the first information and the fourth information, and the first UE sends the second information to the first UE. The second UE sends second information, and the fourth information is used to indicate that the first UE is authorized to perform relay communication. Thus, the first UE can determine the second information.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：第二UE(例如，远端UE)接收第一指示信息。其中，第一指示信息用于指示第一UE(例如，中继UE)支持为第二UE与第一RAN设备的通信提供适配层中继服务，或者，第一指示信息用于指示第一RAN设备支持适配层通信，第二UE根据第一指示信息确定第一UE为第二UE提供中继服务。In another aspect, the present application also discloses a relay-based communication method, the method includes: a second UE (for example, a remote UE) receives first indication information. The first indication information is used to indicate that the first UE (for example, a relay UE) supports the provision of adaptation layer relay services for the communication between the second UE and the first RAN device, or the first indication information is used to indicate the first The RAN device supports adaptation layer communication, and the second UE determines according to the first indication information that the first UE provides a relay service for the second UE.
根据上述方法，第二UE根据接收到的第一指示信息确定第一UE，可以保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the above method, the second UE determines the first UE according to the received first indication information, which can ensure that the second UE uses the indirect communication method based on layer 2 relay to access the network through the first UE, thereby improving user experience .
在一种可能的设计中，当第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务时，第二UE接收第一指示信息，包括：第二UE从第一UE接收第一指示信息，第一指示信息根据第一信息和第二信息确定，第一信息用于指示第一RAN设备支持适配层通信，第二信息用于指示第一UE支持适配层通信。由此，第二UE根据第一指示信息可以获知第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务。In a possible design, when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, the second UE receives the first indication information, including : The second UE receives the first indication information from the first UE, the first indication information is determined according to the first information and the second information, the first information is used to indicate that the first RAN device supports adaptation layer communication, and the second information is used to indicate The first UE supports adaptation layer communication. In this way, the second UE can learn, according to the first indication information, that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device.
在一种可能的设计中，当第一指示信息用于指示第一RAN设备支持适配层通信时，第二UE接收第一指示信息，包括：第二UE通过第一UE从第一RAN设备接收第一指示信息。由此，第二UE根据第一指示信息可以获知第一RAN设备支持适配层通信。In a possible design, when the first indication information is used to indicate that the first RAN device supports communication at the adaptation layer, the second UE receives the first indication information, including: Receive the first instruction information. Thus, the second UE can learn that the first RAN device supports adaptation layer communication according to the first indication information.
在一种可能的设计中，第二UE接收第二指示信息，第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务，或者，第二指示信息用于指示第二RAN设备不支持适配层通信。由此，第二UE不会选择第三UE位第而UE提供中继服务。In a possible design, the second UE receives the second indication information, the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for the communication between the second UE and the second RAN device, or, The second indication information is used to indicate that the second RAN device does not support adaptation layer communication. Therefore, the second UE will not select the third UE and the UE provides the relay service.
在一种可能的设计中，当第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务时，第二UE接收第二指示信息，包括：第二UE从第三UE接收第二指示信息，第二指示信息根据第三信息和/或第四信息确定，第三信息用于指示第二RAN设备不支持适配层通信，第四信息用于指示第三UE不支持适配层通信。由此，第二UE根据第二指示信息可以获知第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务。In a possible design, when the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for communication between the second UE and the second RAN device, the second UE receives the second indication information, Including: the second UE receives the second indication information from the third UE, the second indication information is determined according to the third information and/or the fourth information, the third information is used to indicate that the second RAN device does not support adaptation layer communication, and the fourth The information is used to indicate that the third UE does not support adaptation layer communication. Therefore, the second UE can learn that the third UE does not support the provision of adaptation layer relay services for communication between the second UE and the second RAN device according to the second indication information.
在一种可能的设计中，当第二指示信息用于指示第二RAN设备不支持适配层通信时，第二UE接收第二指示信息，包括：第二UE通过第三UE从第二RAN设备接收第二指示信息。由此，第二UE根据第二指示信息可以获知第二RAN设备不支持适配层通信。In a possible design, when the second indication information is used to indicate that the second RAN device does not support adaptation layer communication, the second UE receiving the second indication information includes: The device receives the second indication information. Therefore, the second UE can learn that the second RAN device does not support adaptation layer communication according to the second indication information.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：UE(例如，中继UE)从第一RAN设备接收第一信息，第一信息用于指示第一RAN设备是否支持适配层通信；若第一信息用于指示第一RAN设备支持适配层通信，UE根据第一信息确定驻留在第一RAN设备服务的小区；或者，若第一信息用于指示第一RAN设备不支持适配层通信，UE根据第一信息确定重选小区。In another aspect, the present application also discloses a relay-based communication method. The method includes: a UE (for example, a relay UE) receives first information from a first RAN device, and the first information is used to indicate the first RAN device Whether to support adaptation layer communication; if the first information is used to indicate that the first RAN device supports adaptation layer communication, the UE determines based on the first information to reside in the cell served by the first RAN device; or, if the first information is used to indicate The first RAN device does not support adaptation layer communication, and the UE determines to reselect a cell according to the first information.
根据上述方法，UE在选择小区驻留时，通过从小区的第一RAN设备接收第一信息，可以确定是否在该小区驻留。通过该方法可以保证UE驻留的小区的第一RAN设备可以支持适配层通信，进而保证了该UE可以作为提供基于层2中继服务的中继UE。According to the above method, when the UE selects a cell to camp on, by receiving the first information from the first RAN device of the cell, it can determine whether to camp on the cell. Through this method, it can be ensured that the first RAN device of the cell where the UE resides can support adaptation layer communication, thereby ensuring that the UE can be used as a relay UE that provides a layer 2 relay service.
在一种可能的设计中，UE确定UE支持适配层通信；或者，UE从第二RAN设备接收第二信息，第二信息用于指示UE被授权执行中继通信，第二RAN设备为在UE接入第一RAN设备之前为UE服务的RAN设备；或者，UE从第一RAN设备接收第三信息，第三信息用于指示UE 被授权执行中继通信。In a possible design, the UE determines that the UE supports adaptation layer communication; or, the UE receives second information from the second RAN device, the second information is used to indicate that the UE is authorized to perform relay communication, and the second RAN device is in A RAN device that serves the UE before the UE accesses the first RAN device; or, the UE receives third information from the first RAN device, and the third information is used to indicate that the UE is authorized to perform relay communication.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：PCF网元从RAN设备接收第一信息，第一信息用于指示RAN设备支持适配层通信，PCF网元根据第一信息和UE(例如，中继UE)的签约信息确定第二信息，第二信息用于指示UE被授权在RAN设备服务的小区中驻留时执行中继通信，签约信息用于指示UE被授权执行中继通信，PCF网元向UE发送第二信息。In another aspect, this application also discloses a relay-based communication method. The method includes: the PCF network element receives first information from the RAN device, the first information is used to indicate that the RAN device supports adaptation layer communication, and the PCF network element The second information is determined according to the first information and the subscription information of the UE (for example, a relay UE). The second information is used to indicate that the UE is authorized to perform relay communication when camping in a cell served by the RAN device, and the subscription information is used to indicate The UE is authorized to perform relay communication, and the PCF network element sends the second information to the UE.
根据上述方法，PCF网元在确定第一UE是否能被授权作为中继UE之前，获取了RAN设备支持适配层通信的第一信息，从而可以保证PCF网元授权作为中继UE的第一UE可以提供基于层2中继的中继服务。According to the above method, before determining whether the first UE can be authorized as a relay UE, the PCF network element obtains the first information that the RAN device supports communication at the adaptation layer, thereby ensuring that the PCF network element is authorized to be the first UE of the relay UE. The UE can provide a layer 2 relay-based relay service.
在一种可能的设计中，PCF网元从UDR网元获取签约信息。In a possible design, the PCF network element obtains the subscription information from the UDR network element.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：AMF网元从RAN设备接收第一信息，第一信息用于指示RAN设备支持适配层通信，AMF网元从UE(例如，中继UE)接收第二信息，第二信息用于指示UE支持适配层通信，AMF网元根据第二信息向PCF网元发送第一信息。In another aspect, this application also discloses a relay-based communication method. The method includes: an AMF network element receives first information from a RAN device, the first information is used to indicate that the RAN device supports adaptation layer communication, and the AMF network element The second information is received from the UE (for example, a relay UE), the second information is used to indicate that the UE supports adaptation layer communication, and the AMF network element sends the first information to the PCF network element according to the second information.
根据上述方法，AMF网元获知RAN设备支持适配层通信后向PCF网元发送第一信息，使PCF网元可以根据第一信息和UE(例如，中继UE)的签约信息确定第二信息，第二信息用于指示UE被授权在RAN设备服务的小区中驻留时执行中继通信。According to the above method, the AMF network element sends the first information to the PCF network element after learning that the RAN device supports communication at the adaptation layer, so that the PCF network element can determine the second information based on the first information and the subscription information of the UE (for example, relay UE) , The second information is used to indicate that the UE is authorized to perform relay communication when camping in the cell served by the RAN device.
在一种可能的设计中，第二信息为D2D能力信息。In a possible design, the second information is D2D capability information.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：AMF网元从RAN设备接收第一信息，第一信息用于指示RAN设备支持适配层通信；AMF网元确定RAN支持适配层通信，AMF网元向UE发送第一信息。In another aspect, this application also discloses a relay-based communication method. The method includes: an AMF network element receives first information from a RAN device, the first information is used to instruct the RAN device to support adaptation layer communication; the AMF network element It is determined that the RAN supports the adaptation layer communication, and the AMF network element sends the first information to the UE.
根据上述方法，AMF网元获知RAN设备支持适配层通信后向中继UE发送第一信息，使中继UE获知RAN设备支持适配层通信。According to the above method, the AMF network element learns that the RAN device supports the adaptation layer communication and sends the first information to the relay UE, so that the relay UE knows that the RAN device supports the adaptation layer communication.
在一种可能的设计中，AMF网元从UE接收第二信息，第二信息用于指示UE支持适配层通信，AMF网元根据第二信息向UE发送第一信息。由此，AMF网元在确定RAN设备和中继UE都支持适配层通信时向UE发送第一信息。In a possible design, the AMF network element receives second information from the UE, the second information is used to indicate that the UE supports adaptation layer communication, and the AMF network element sends the first information to the UE according to the second information. Therefore, the AMF network element sends the first information to the UE when it is determined that both the RAN device and the relay UE support adaptation layer communication.
又一方面，本申请还公开了一种基于中继的通信方法，该方法包括：RAN设备确定RAN设备支持通过适配层与第一UE(例如，中继UE)通信，RAN设备向第一UE或者AMF网元发送第一信息，第一信息用于指示RAN设备支持通过适配层与第一UE通信。In another aspect, the present application also discloses a relay-based communication method. The method includes: the RAN device determines that the RAN device supports communication with a first UE (for example, a relay UE) through an adaptation layer, and the RAN device communicates to the first UE (for example, a relay UE). The UE or the AMF network element sends first information, where the first information is used to indicate that the RAN device supports communication with the first UE through the adaptation layer.
根据上述方法，第一UE或者AMF网元可以获知RAN设备支持通过适配层与第一UE通信。According to the above method, the first UE or the AMF network element can learn that the RAN device supports communication with the first UE through the adaptation layer.
又一方面，本申请实施例提供了一种终端设备，该终端设备具有实现上述方法中第一UE行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述终端设备的结构中包括处理器和收发器，所述处理器被配置为处理该终端设备执行上述方法中相应的功能。所述收发器用于实现上述终端设备与RAN设备/第二UE之间的通信。所述终端设备还可以包括存储器，所述存储器用于与处理器耦合，其保存该终端设备必要的程序指令和数据。In another aspect, an embodiment of the present application provides a terminal device, which has a function of implementing the first UE behavior in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the structure of the foregoing terminal device includes a processor and a transceiver, and the processor is configured to process the terminal device to perform corresponding functions in the foregoing method. The transceiver is used to implement the communication between the aforementioned terminal device and the RAN device/second UE. The terminal device may also include a memory, which is used for coupling with the processor, and stores the necessary program instructions and data of the terminal device.
又一方面，本申请实施例提供了一种终端设备，该终端设备具有实现上述方法中第二UE行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述终端设备的结构中包括处理器和收发器，所述处理器被配置为处理该终端设备执行上述方法中相应的功能。所述收发器用于实现上述终端设备与第一UE/第一RAN设备之间的通信。所述终端设备还可 以包括存储器，所述存储器用于与处理器耦合，其保存该终端设备必要的程序指令和数据。In another aspect, an embodiment of the present application provides a terminal device, which has a function of realizing the behavior of the second UE in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the structure of the foregoing terminal device includes a processor and a transceiver, and the processor is configured to process the terminal device to perform corresponding functions in the foregoing method. The transceiver is used to implement communication between the aforementioned terminal device and the first UE/first RAN device. The terminal device may also include a memory, which is used for coupling with the processor and stores the necessary program instructions and data of the terminal device.
又一方面，本申请实施例提供了一种基于中继的通信装置，该通信装置具有实现上述方法中PCF行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述通信装置的结构中包括处理器和收发器，所述处理器被配置为处理该通信装置执行上述方法中相应的功能。所述收发器用于实现上述装置与RAN设备/UDR网元之间的通信。所述通信装置还可以包括存储器，所述存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。In another aspect, an embodiment of the present application provides a relay-based communication device, which has the function of realizing the PCF behavior in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the structure of the foregoing communication device includes a processor and a transceiver, and the processor is configured to process the communication device to perform corresponding functions in the foregoing method. The transceiver is used to implement the communication between the above-mentioned device and the RAN equipment/UDR network element. The communication device may also include a memory, which is used for coupling with the processor and stores the program instructions and data necessary for the device.
又一方面，本申请实施例提供了一种基于中继的通信装置，该通信装置具有实现上述方法中AMF网元行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述通信装置的结构中包括处理器和收发器，所述处理器被配置为处理该装置执行上述方法中相应的功能。所述收发器用于实现上述装置与RAN设备/UE之间的通信。所述通信装置还可以包括存储器，所述存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。In another aspect, an embodiment of the present application provides a relay-based communication device, which has the function of realizing the behavior of the AMF network element in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the structure of the foregoing communication device includes a processor and a transceiver, and the processor is configured to process the device to perform corresponding functions in the foregoing method. The transceiver is used to implement the communication between the above-mentioned apparatus and the RAN equipment/UE. The communication device may also include a memory, which is used for coupling with the processor and stores the program instructions and data necessary for the device.
又一方面，本申请实施例提供了一种基于中继的通信装置，该通信装置具有实现上述方法中RAN设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，上述装置的结构中包括处理器和收发器，所述处理器被配置为处理该通信装置执行上述方法中相应的功能。所述收发器用于实现上述装置与第一UE/AMF网元之间的通信。所述通信装置还可以包括存储器，所述存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。In another aspect, an embodiment of the present application provides a relay-based communication device, which has a function of realizing the behavior of the RAN device in the foregoing method. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. In a possible design, the structure of the foregoing device includes a processor and a transceiver, and the processor is configured to process the communication device to perform corresponding functions in the foregoing method. The transceiver is used to implement the communication between the above-mentioned device and the first UE/AMF network element. The communication device may also include a memory, which is used for coupling with the processor and stores the program instructions and data necessary for the device.
又一方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。In another aspect, an embodiment of the present application provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods described in the foregoing aspects.
又一方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。In another aspect, the embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the methods described in the foregoing aspects.
又一方面，本申请提供了一种芯片***，该芯片***包括处理器，用于支持上述装置或终端设备实现上述方面中所涉及的功能，例如，生成或处理上述方法中所涉及的信息。在一种可能的设计中，所述芯片***还包括存储器，所述存储器，用于保存数据发送设备必要的程序指令和数据。该芯片***，可以由芯片构成，也可以包含芯片和其他分立器件。In another aspect, the present application provides a chip system that includes a processor for supporting the above-mentioned device or terminal device to implement the functions involved in the above-mentioned aspects, for example, generating or processing the information involved in the above-mentioned method. In a possible design, the chip system further includes a memory, and the memory is used to store program instructions and data necessary for the data sending device. The chip system can be composed of chips, or include chips and other discrete devices.
附图说明Description of the drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对本发明实施例或背景技术中所需要使用的附图进行说明。In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will describe the accompanying drawings that need to be used in the embodiments of the present invention or the background art.
图1为基于中继的通信示意图；Figure 1 is a schematic diagram of relay-based communication;
图2为根据本申请实施例提供的一种通信架构示意图；Fig. 2 is a schematic diagram of a communication architecture provided according to an embodiment of the present application;
图3为根据本申请实施例提供的一种基于中继的通信方法；Fig. 3 is a relay-based communication method provided according to an embodiment of the present application;
图4a为根据本申请实施例提供的一种基于层2中继的非直接通信的控制面协议栈；Fig. 4a is a control plane protocol stack for indirect communication based on layer 2 relay provided according to an embodiment of the present application;
图4b为根据本申请实施例提供的一种基于层2中继的非直接通信的用户面协议栈；Fig. 4b is a user plane protocol stack for indirect communication based on layer 2 relay provided according to an embodiment of the present application;
图5为根据本申请实施例提供的一种基于中继的通信方法的流程图；Fig. 5 is a flowchart of a relay-based communication method according to an embodiment of the present application;
图6为根据本申请实施例提供的又一种基于中继的通信方法的流程图；Fig. 6 is a flowchart of another relay-based communication method provided according to an embodiment of the present application;
图7为根据本申请实施例提供的又一种基于中继的通信方法的流程图；Fig. 7 is a flowchart of another relay-based communication method provided according to an embodiment of the present application;
图8为根据本申请实施例提供的又一种基于中继的通信方法的流程图；FIG. 8 is a flowchart of another relay-based communication method provided according to an embodiment of the present application;
图9A、9B为根据本申请实施例中提供的一种基于中继的通信装置的结构示意图；9A and 9B are schematic structural diagrams of a relay-based communication device provided in an embodiment of the present application;
具体实施方式Detailed ways
在本申请的描述中，为了便于清楚描述本申请实施例的技术方案，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。该“第一”、第二”描述的技术特征间无先后顺序或者大小顺序。In the description of the present application, in order to clearly describe the technical solutions of the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items that have basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference. The “first” and second descriptions have no order or size order among the technical features.
在本申请的描述中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。In the description of the present application, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner to facilitate understanding.
在本申请的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种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这三种情况。另外，在本申请的描述中，“多个”是指两个或两个以上。“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。In the description of this application, unless otherwise stated, "/" means or, for example, A/B can mean A or B; "and/or" in this application is merely an association relationship describing the associated objects , Indicates that there can be three relationships, for example, A and/or B, which can indicate: A alone exists, A and B exist at the same time, and B exists alone. In addition, in the description of the present application, "a plurality of" means two or more. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述。The technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application.
图2示出了本申请实施例提供的通信架构示意图。在5G移动网络架构中，移动网关的控制面功能和转发面功能解耦，其分离出来的控制面功能与3GPP传统的控制网元移动性管理实体(mobility management entity，MME)等合并成统一的控制面(control plane)。UPF网元能实现服务网关(serving gateway，SGW)和分组数据网络网关(packet data network gateway，PGW)的用户面功能(SGW-U和PGW-U)。进一步的，统一的控制面网元可以分解成接入和移动性管理功能(access and mobility management function，AMF)网元和会话管理功能(session management function，SMF)网元。Fig. 2 shows a schematic diagram of a communication architecture provided by an embodiment of the present application. In the 5G mobile network architecture, the control plane function of the mobile gateway is decoupled from the forwarding plane function, and its separated control plane function is merged with the traditional 3GPP control network element mobility management entity (mobility management entity, MME), etc., into a unified Control plane. The UPF network element can implement the user plane functions (SGW-U and PGW-U) of a serving gateway (serving gateway, SGW) and a packet data network gateway (packet data network gateway, PGW). Further, the unified control plane network elements can be decomposed into access and mobility management function (AMF) network elements and session management function (session management function, SMF) network elements.
如图2所示的通信***至少包括远端UE 201、中继UE 202、RAN设备203、UPF网元204、DN 205和AMF网元206。The communication system shown in FIG. 2 at least includes a remote UE 201, a relay UE 202, a RAN device 203, a UPF network element 204, a DN 205, and an AMF network element 206.
其中，本***中所涉及到的远端UE 201和/或中继UE 202不受限于5G网络，包括：手机、物联网设备、智能家居设备、工业控制设备、车辆设备等等。所述远端UE和/或中继UE也可以称为移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、终端设备(User Terminal)、用户代理(User Agent)，在此不作限定。上述远端UE和/或中继UE还可以为车与车(Vehicle-to-vehicle，V2V)通信中的汽车、机器类通信中的机器等。例如，在车联网通信中，远端UE和/或中继UE可以为车辆上载的通信终端，或者是路边单元(RSU，Road Side Unit)。上述远端UE和/或中继UE还可以为无人机上载有的通信终端。Among them, the remote UE 201 and/or the relay UE 202 involved in this system are not limited to 5G networks, including: mobile phones, IoT devices, smart home devices, industrial control devices, vehicle equipment, and so on. The remote UE and/or relay UE may also be referred to as a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), a remote terminal (Remote Terminal), an access terminal (Access Terminal), The terminal equipment (User Terminal) and User Agent (User Agent) are not limited here. The aforementioned remote UE and/or relay UE may also be a car in vehicle-to-vehicle (V2V) communication, a machine in machine-type communication, and the like. For example, in vehicle networking communication, the remote UE and/or the relay UE may be a communication terminal uploaded by the vehicle, or a road side unit (RSU, Road Side Unit). The aforementioned remote UE and/or relay UE may also be a communication terminal carried by the drone.
本***中所涉及到的RAN设备203是一种用于为中继UE 202提供3GPP接入功能的装置，主要负责空口侧的无线资源管理、服务质量管理、数据压缩和加密等功能。RAN设备203可以包括各种形式的基站，例如：宏基站，微基站(也称为小站)，中继站，接入点等。在采用不同的无线接入技术的***中，具备基站功能的设备的名称可能会有所不同，例如，eNB、Node B和gNB等。The RAN device 203 involved in this system is a device for providing 3GPP access functions for the relay UE 202, and is mainly responsible for functions such as radio resource management, service quality management, data compression, and encryption on the air interface side. The RAN device 203 may include various forms of base stations, such as: macro base stations, micro base stations (also referred to as small stations), relay stations, and access points. In systems using different wireless access technologies, the names of devices with base station functions may be different, such as eNB, Node B, and gNB.
本***中所涉及到的UPF 204可以实现用户报文的转发、统计和检测等功能。UPF 204 负责终端设备中用户数据的转发和接收。可以从数据网络接收用户数据，通过接入网设备传输给终端设备；UPF网元还可以通过RAN设备203从终端设备接收用户数据，转发到数据网络。UPF网元中为终端设备提供服务的传输资源和调度功能由SMF网元管理控制的。UPF也可称为UPF设备或UPF网元或UPF实体。The UPF 204 involved in this system can implement functions such as forwarding, statistics, and detection of user messages. UPF 204 is responsible for the forwarding and receiving of user data in terminal equipment. The user data can be received from the data network and transmitted to the terminal device through the access network device; the UPF network element can also receive the user data from the terminal device through the RAN device 203 and forward it to the data network. The transmission resources and scheduling functions of the UPF network element that provide services for the terminal equipment are managed and controlled by the SMF network element. UPF may also be called UPF equipment or UPF network element or UPF entity.
本***中所涉及到的AMF 206可负责终端设备的注册、移动性管理、跟踪区更新流程等。AMF网元206为终端设备中的会话提供服务的情况下，会为该会话提供控制面的存储资源，以存储会话标识、与会话标识关联的SMF网元标识等。AMF也可称为AMF设备或AMF网元或AMF实体。The AMF 206 involved in this system can be responsible for terminal device registration, mobility management, and tracking area update procedures. When the AMF network element 206 provides services for the session in the terminal device, it will provide storage resources of the control plane for the session to store the session identifier, the SMF network element identifier associated with the session identifier, and so on. AMF may also be called AMF equipment or AMF network element or AMF entity.
本***中所涉及到的DN 206可以为运营商提供的服务、互联网接入服务，或者第三方提供的服务。The DN 206 involved in this system can be a service provided by an operator, an Internet access service, or a service provided by a third party.
可选的，上述的通信***中还包括策略控制功能(policy control function，PCF)网元。该网元包括策略控制和基于流计费控制的功能。例如，PCF网元可实现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。PCF网元可也称为PCF实体或PCF设备。Optionally, the aforementioned communication system further includes a policy control function (PCF) network element. The network element includes policy control and flow-based charging control functions. For example, PCF network elements can implement user subscription data management functions, policy control functions, charging policy control functions, quality of service (QoS) control, etc. PCF network elements may also be referred to as PCF entities or PCF devices.
上述各网元既可以是在专用硬件上实现的网络元件，也可以是在专用硬件上运行的软件实例，或者是在虚拟化平台上虚拟化功能的实例，例如，上述虚拟化平台可以为云平台。The aforementioned network elements can be network elements implemented on dedicated hardware, software instances running on dedicated hardware, or instances of virtualized functions on a virtualization platform. For example, the aforementioned virtualization platform can be a cloud platform.
此外，本申请实施例还可以适用于面向未来的其他通信技术。本申请描述的网络架构以及业务场景是为了更加清楚的说明本申请的技术方案，并不构成对本申请提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。In addition, the embodiments of the present application may also be applicable to other future-oriented communication technologies. The network architecture and business scenarios described in this application are intended to explain the technical solutions of this application more clearly, and do not constitute a limitation on the technical solutions provided by this application. Those of ordinary skill in the art will know that with the evolution of the network architecture and new business scenarios The technical solutions provided in this application are equally applicable to similar technical problems.
在图2所示的通信***中，远端UE 201与中继UE 202通信，中继UE 202与RAN设备203通信，RAN设备203接入核心网，并通过UPF网元204访问DN 205，从而实现远端UE与网络间的通信。In the communication system shown in Figure 2, the remote UE 201 communicates with the relay UE 202, the relay UE 202 communicates with the RAN device 203, and the RAN device 203 accesses the core network and accesses the DN 205 through the UPF network element 204, thereby Realize the communication between the remote UE and the network.
下面以图2所示的通信架构为例，通过一些实施例对本申请的技术方案进行详细说明。下面这几个实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。The following takes the communication architecture shown in FIG. 2 as an example, and the technical solutions of the present application are described in detail through some embodiments. The following embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
图3为本申请实施例提供的一种基于中继的通信方法，该方法可以适用于图2所示的通信***。通过该方法，可以保证远端UE能够基于层2中继的非直接通信方式接入网络。如图3所示，该方法可以包括：FIG. 3 is a relay-based communication method provided by an embodiment of the application, and the method may be applicable to the communication system shown in FIG. 2. Through this method, it can be ensured that the remote UE can access the network based on the indirect communication mode of layer 2 relay. As shown in Figure 3, the method may include:
S301、第一UE从RAN设备接收第一信息。其中，第一信息用于指示RAN设备支持适配层通信。S301. The first UE receives first information from a RAN device. Among them, the first information is used to indicate that the RAN device supports adaptation layer communication.
例如，第一UE为图2中的中继UE，RAN设备为图2中的RAN设备。For example, the first UE is the relay UE in FIG. 2 and the RAN device is the RAN device in FIG. 2.
例如，RAN设备支持适配层通信还可以表示为RAN设备支持通过适配层与第一UE通信。For example, the RAN device supporting communication at the adaptation layer may also mean that the RAN device supports communication with the first UE through the adaptation layer.
S302、第一UE根据第一信息向第二UE发送第二信息。其中，第二信息用于指示第一UE支持为第二UE提供中继服务。S302: The first UE sends second information to the second UE according to the first information. Wherein, the second information is used to indicate that the first UE supports providing a relay service for the second UE.
例如，第二UE为图2中的远端UE。For example, the second UE is the remote UE in FIG. 2.
例如，第一UE支持为第二UE提供中继服务的方式可结合图4a所示的基于层2中继的非直接通信的控制面协议栈和图4b所示的基于层2中继的非直接通信的用户面协议栈来描述。For example, the manner in which the first UE supports the provision of relay services for the second UE can be combined with the control plane protocol stack of indirect communication based on layer 2 relay shown in Figure 4a and the non-direct communication based on layer 2 relay shown in Figure 4b. The user plane protocol stack of direct communication is described.
例如，步骤S302可通过以下三种方式中的任一种方式实现：For example, step S302 can be implemented in any of the following three ways:
方式一:第一UE根据第一信息确定第二信息，第一UE向第二UE发送第二信息。Manner 1: The first UE determines the second information according to the first information, and the first UE sends the second information to the second UE.
在方式一中，默认所有的中继UE都支持适配层通信。由此，第一UE根据第一信息获知RAN设备支持适配层通信后，确定该第一UE可以为第二UE提供中继，使第二UE可以基于层 2中继的非直接通信方式接入网络。In method 1, all relay UEs support adaptation layer communication by default. Therefore, after the first UE learns that the RAN device supports adaptation layer communication according to the first information, it is determined that the first UE can provide a relay for the second UE, so that the second UE can receive indirect communication based on the layer 2 relay. Into the network.
方式二：第一UE根据第一信息和第三信息确定第二信息，第一UE向第二UE发送第二信息。其中，第三信息用于指示第一UE支持适配层通信。Manner 2: The first UE determines the second information according to the first information and the third information, and the first UE sends the second information to the second UE. Wherein, the third information is used to indicate that the first UE supports adaptation layer communication.
方式二与方式一不同的是，在方式二中，并非所有的中继UE都支持适配层通信。第一UE在获知该第一UE支持适配层通信后，再根据第一信息确定该第一UE可以为第二UE提供中继。换句话说，如果第一UE获知该第一UE不支持适配层通信，则第一UE确定该第一UE不能为第二UE提供中继。The second method is different from the first method in that in the second method, not all relay UEs support adaptation layer communication. After learning that the first UE supports adaptation layer communication, the first UE determines according to the first information that the first UE can provide a relay for the second UE. In other words, if the first UE learns that the first UE does not support adaptation layer communication, the first UE determines that the first UE cannot provide a relay for the second UE.
方式三：第一UE根据第一信息和第四信息确定第二信息，第一UE向第二UE发送第二信息。其中，第四信息用于指示第一UE被授权执行中继通信。Manner 3: The first UE determines the second information according to the first information and the fourth information, and the first UE sends the second information to the second UE. Wherein, the fourth information is used to indicate that the first UE is authorized to perform relay communication.
在方式三中，第一UE从网络侧获取第四信息，获知该第一UE被授权执行中继通信后，再根据第一信息确定该第一UE可以为第二UE提供中继。换句话说，如果第一UE获知该第一UE未被授权执行中继通信，则第一UE确定该第一UE不能为第二UE提供中继服务。In the third manner, the first UE obtains the fourth information from the network side, and knows that the first UE is authorized to perform relay communication, and then determines according to the first information that the first UE can provide a relay for the second UE. In other words, if the first UE learns that the first UE is not authorized to perform relay communication, the first UE determines that the first UE cannot provide a relay service for the second UE.
需要说明的是，在本申请的各实施例中，远端UE支持适配层通信也可以描述为远端UE支持通过适配层与RAN设备通信。It should be noted that, in the embodiments of the present application, the remote UE supporting communication at the adaptation layer can also be described as the remote UE supporting communication with the RAN device through the adaptation layer.
根据本发明实施例的方法，在图2所示的通信***中，第一UE通过从RAN设备接收第一信息，可以确定RAN设备支持适配层通信，并向第二UE发送第二信息，从而保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the method of the embodiment of the present invention, in the communication system shown in FIG. 2, the first UE can determine that the RAN device supports adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, Therefore, it is ensured that the second UE accesses the network through the indirect communication mode based on the layer 2 relay through the first UE, thereby improving the user experience.
图4a为基于层2中继的非直接通信中控制面协议栈，图4b为基于层2中继的非直接通信中用户面协议栈。图4a和图4b中，Remote UE与Relay UE之间通过PC5接口通信，Relay UE与RAN设备之间通过Uu接口通信，RAN设备和AMF网元的控制面通过N2接口通信，RAN设备和UPF网元的用户面通过N3接口通信。Fig. 4a shows the control plane protocol stack in indirect communication based on layer 2 relay, and Fig. 4b shows the user plane protocol stack in indirect communication based on layer 2 relay. In Figure 4a and Figure 4b, Remote UE and Relay UE communicate through the PC5 interface, Relay UE and RAN equipment communicate through the Uu interface, the RAN equipment and the control plane of the AMF network element communicate through the N2 interface, and the RAN equipment communicates with the UPF network. The user plane of the meta communicates through the N3 interface.
例如，Remote UE为图2中的远端UE，也即图3中的第二UE；Relay UE为图2中的中继UE，也即图3中的第一UE；RAN设备为图2中的RAN设备，AMF网元为图2中的AMF网元，UPF网元为图2中的UPF网元。For example, the Remote UE is the remote UE in Figure 2, that is, the second UE in Figure 3; the Relay UE is the relay UE in Figure 2, that is, the first UE in Figure 3; the RAN device is the second UE in Figure 2 For RAN equipment, the AMF network element is the AMF network element in Figure 2, and the UPF network element is the UPF network element in Figure 2.
在图4a所示的控制面协议栈和图4b所示的用户面协议栈中，Relay UE和RAN设备在无线链路控制(Radio Link Control，RLC)层的上面都有适配(Adaptation)层，可以通过适配层中的标识信息区分来自不同远端UE的数据流，由此第一UE支持为第二UE提供基于层2的中继服务。In the control plane protocol stack shown in Figure 4a and the user plane protocol stack shown in Figure 4b, Relay UE and RAN equipment have an Adaptation layer on top of the Radio Link Control (RLC) layer The identification information in the adaptation layer can be used to distinguish data streams from different remote UEs, so that the first UE supports the provision of layer 2 based relay services for the second UE.
图5为本申请实施例提供的一种基于中继的通信方法的流程图。图5适用于图2所示的通信***，是对图3所示的方法的具体实现。图5将结合图2和图3进行描述。如图5所示，该方法可以包括：Fig. 5 is a flowchart of a relay-based communication method provided by an embodiment of the application. Fig. 5 is suitable for the communication system shown in Fig. 2 and is a specific implementation of the method shown in Fig. 3. Fig. 5 will be described in conjunction with Fig. 2 and Fig. 3. As shown in Figure 5, the method may include:
501、第一RAN设备向第一UE发送第一信息。相应的，第一UE从第一RAN设备接收第一信息。501. The first RAN device sends first information to the first UE. Correspondingly, the first UE receives the first information from the first RAN device.
其中，第一信息用于指示第一RAN设备支持适配层通信。该第一信息可参考图3的步骤S301中对第一信息的描述，此处不再赘述。The first information is used to indicate that the first RAN device supports adaptation layer communication. For the first information, reference may be made to the description of the first information in step S301 in FIG. 3, which will not be repeated here.
例如，该第一信息可以通过***消息广播(system information broadcast，SIB)消息发送。在这种情况下，第一UE驻留在第一RAN设备服务的小区。For example, the first information may be sent through a system information broadcast (SIB) message. In this case, the first UE camps on the cell served by the first RAN device.
例如，第一信息还可以通过无线资源控制(radio resource control，RRC)消息发送。可选的，第一RAN设备在发送第一信息之前根据第一UE的中继授权信息获知第一UE可以作为中继，该第一UE的中继授权信息从PCF网元中获取。可选的，在第一RAN设备注册的时候或者在第一UE的策略更新流程中，第一RAN设备通过AMF网元从PCF网元接收第一UE的中 继授权信息，并获知第一UE可以作为中继后，第一RAN设备向第一UE发送第一信息。For example, the first information may also be sent through a radio resource control (radio resource control, RRC) message. Optionally, before sending the first information, the first RAN device learns that the first UE can act as a relay according to the relay authorization information of the first UE, and the relay authorization information of the first UE is obtained from the PCF network element. Optionally, when the first RAN device registers or in the policy update procedure of the first UE, the first RAN device receives the relay authorization information of the first UE from the PCF network element through the AMF network element, and learns the first UE After acting as a relay, the first RAN device sends the first information to the first UE.
例如，PCF网元从用户数据库(User Data Repository，UDR)中获取UE签约信息，并根据UE的签约信息确定中继授权信息。For example, the PCF network element obtains UE subscription information from a user database (User Data Repository, UDR), and determines relay authorization information according to the UE's subscription information.
可选的，第一UE获取第一信息后，存储第一信息。Optionally, after obtaining the first information, the first UE stores the first information.
在步骤501之后，可以通过方式a和方式b中任一种方式实现该方法，方式a是由第二UE发起的中继发现过程，方式b是由第一UE发起的中继发现过程。其中，方式a包括步骤502至504。方式b包括步骤505和506。After step 501, the method can be implemented in either way a or way b, way a is the relay discovery process initiated by the second UE, and way b is the relay discovery process initiated by the first UE. Wherein, the method a includes steps 502 to 504. Method b includes steps 505 and 506.
502、第二UE向第一UE发送中继发现消息。相应的，第一UE从第二UE接收中继发现消息。502. The second UE sends a relay discovery message to the first UE. Correspondingly, the first UE receives the relay discovery message from the second UE.
例如，该中继发现消息用于请求发现可以为第二UE提供中继的中继UE。For example, the relay discovery message is used to request discovery of a relay UE that can provide a relay for the second UE.
可选的，中继发现消息中包括层2中继指示信息，该层2中继指示信息用于指示第二UE使用基于层2中继的非直接通信方式。Optionally, the relay discovery message includes layer 2 relay indication information, and the layer 2 relay indication information is used to instruct the second UE to use an indirect communication method based on layer 2 relay.
503、第一UE确定第二信息。503. The first UE determines second information.
例如，第一UE确定第二信息的方式可参考图3步骤S302中确定第二信息的三种方式中的任一种方式，此处不再赘述。For example, the manner of determining the second information by the first UE may refer to any one of the three manners of determining the second information in step S302 in FIG. 3, which will not be repeated here.
504、第一UE向第二UE发送中继响应消息。504. The first UE sends a relay response message to the second UE.
例如，中继响应消息中包括步骤503中的第二信息。For example, the relay response message includes the second information in step 503.
可选的，如果在步骤503中，第一UE不支持适配层通信，或者，第一UE未被授权执行中继通信，则第一UE确定第一UE不能为第二UE提供基于层2中继的中继服务，则步骤504不执行。Optionally, if in step 503, the first UE does not support adaptation layer communication, or the first UE is not authorized to perform relay communication, the first UE determines that the first UE cannot provide the second UE based on layer 2 For the relay service of the relay, step 504 is not executed.
通过方式a，当第一UE接收到第二UE发送的中继发现消息后，根据第二确定第一UE支持为第二UE提供中继服务，则向第二UE返回中继响应消息。由此，可以保证第二UE选择的中继UE可以支持基于层2中继的中继服务，从而保证第二UE可以基于层2中继的非直接通信方式接入网络。可选的，当第一UE不能为第二UE提供基于层2中继的中继服务时，第一UE不返回中继响应消息，既可以保证第二UE可以选择的中继UE是支持基于层2中继的中继UE，又可以节省信令。In way a, after the first UE receives the relay discovery message sent by the second UE, according to the second determination that the first UE supports the provision of a relay service for the second UE, it returns a relay response message to the second UE. In this way, it can be ensured that the relay UE selected by the second UE can support the relay service based on the layer 2 relay, thereby ensuring that the second UE can access the network based on the indirect communication mode of the layer 2 relay. Optionally, when the first UE cannot provide the layer 2 relay-based relay service for the second UE, the first UE does not return a relay response message, which can ensure that the relay UE that the second UE can select supports The relay UE of layer 2 relay can save signaling.
505、第一UE确定第二信息。505. The first UE determines second information.
例如，第一UE确定第二信息的方式可参考图3步骤S302中确定第二信息的三种方式中的任一种方式，此处不再赘述。For example, the manner of determining the second information by the first UE may refer to any one of the three manners of determining the second information in step S302 in FIG. 3, which will not be repeated here.
506、第一UE向第二UE发送中继发现消息。506. The first UE sends a relay discovery message to the second UE.
例如，中继发送消息中包括步骤505中的第二信息。For example, the relayed message includes the second information in step 505.
可选的，如果在步骤505中，第一UE不支持适配层通信，或者，第一UE未被授权执行中继通信，则第一UE确定第一UE不能为第二UE提供基于层2中继的中继服务，则步骤506不执行。Optionally, if in step 505, the first UE does not support adaptation layer communication, or the first UE is not authorized to perform relay communication, the first UE determines that the first UE cannot provide the second UE based on layer 2 For the relay service of the relay, step 506 is not executed.
通过方式b，当第一UE根据第二确定第一UE支持为第二UE提供中继服务后，则向第二UE发送中继发现消息。由此，可以保证第二UE选择的中继UE可以支持基于层2中继的中继服务，从而保证第二UE可以基于层2中继的非直接通信方式接入网络。可选的，当第一UE不能为第二UE提供基于层2中继的中继服务时，第一UE不发送中继发现消息，既可以保证第二UE可以选择的中继UE是支持基于层2中继的中继UE，又可以节省信令。By way b, when the first UE determines according to the second that the first UE supports providing a relay service for the second UE, it sends a relay discovery message to the second UE. In this way, it can be ensured that the relay UE selected by the second UE can support the relay service based on the layer 2 relay, thereby ensuring that the second UE can access the network based on the indirect communication mode of the layer 2 relay. Optionally, when the first UE cannot provide the layer 2 relay-based relay service for the second UE, the first UE does not send a relay discovery message, which can ensure that the relay UE that the second UE can select supports The relay UE of layer 2 relay can save signaling.
本实施例还包括步骤507。This embodiment further includes step 507.
507、第二UE进行中继选择。507. The second UE performs relay selection.
例如，第二UE根据第二信息选择第一UE作为中继UE。For example, the second UE selects the first UE as the relay UE according to the second information.
可选的，当存在多个第一UE时，换句话说，如果有多个第一UE向第二UE分别发送了第二信息，则第二UE从多个第一UE中选择一个第一UE作为中继UE。例如，第二UE可以随机从多个第一UE中选择一个第一UE，或者，第二UE基于第一UE与第二UE之间的信号质量或第一UE能提供的QoS情况从多个第一UE中选择一个第一UE。例如，第一UE与第二UE之间的信号质量可以通过步骤504的中继响应消息或步骤506的中继发现消息的信号质量得到。例如，步骤504的中继响应消息或步骤506的中继发现消息中包括第一UE能提供的QoS情况。需要说明的是，第二UE从多个第一UE中选择一个第一UE的方式不限于以上描述。Optionally, when there are multiple first UEs, in other words, if multiple first UEs respectively send second information to the second UE, the second UE selects one first UE from the multiple first UEs. The UE acts as a relay UE. For example, the second UE may randomly select a first UE from a plurality of first UEs, or the second UE may select a first UE based on the signal quality between the first UE and the second UE or the QoS that the first UE can provide. One of the first UEs is selected. For example, the signal quality between the first UE and the second UE may be obtained through the signal quality of the relay response message in step 504 or the relay discovery message in step 506. For example, the relay response message in step 504 or the relay discovery message in step 506 includes the QoS conditions that the first UE can provide. It should be noted that the manner in which the second UE selects one first UE from the multiple first UEs is not limited to the above description.
可选的，当第二UE选择第一UE作为中继UE后，该方法还包括：第二UE向第一UE发送指示信息，该指示信息用于通知第一UE：第二UE选择了第一UE提供中继服务。Optionally, after the second UE selects the first UE as the relay UE, the method further includes: the second UE sends indication information to the first UE, and the indication information is used to notify the first UE that the second UE has selected the second UE. A UE provides a relay service.
根据本发明实施例的方法，第一UE通过从RAN设备接收第一信息，可以确定RAN设备支持适配层通信，并向第二UE发送第二信息，从而保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the method of the embodiment of the present invention, the first UE can determine that the RAN device supports adaptation layer communication by receiving the first information from the RAN device, and send the second information to the second UE, thereby ensuring that the second UE adopts The indirect communication method based on layer 2 relay accesses the network, thereby improving the user experience.
图6为本申请实施例提供的又一种基于中继的通信方法的流程图。图6中，第二UE接收第一指示信息，该第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务，或者，第一指示信息用于指示第一RAN设备支持适配层通信；第二UE根据第一指示信息确定第一UE为第二UE提供中继服务。其中，图6可以包括以下任一种实现场景：当第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务时，如图6中场景c所示，包括步骤601至603；当第一指示信息用于指示第一RAN设备支持适配层通信时，如图6中场景d所示，包括步骤604和605。图6将结合图2、图3和图5进行描述。Fig. 6 is a flowchart of another relay-based communication method provided by an embodiment of the application. In FIG. 6, the second UE receives first indication information, the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, or the first indication information Used to instruct the first RAN device to support adaptation layer communication; the second UE determines according to the first indication information that the first UE provides a relay service for the second UE. Wherein, FIG. 6 may include any of the following implementation scenarios: when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, as shown in the scenario in FIG. 6 As shown in c, steps 601 to 603 are included; when the first indication information is used to indicate that the first RAN device supports adaptation layer communication, as shown in scenario d in FIG. 6, steps 604 and 605 are included. FIG. 6 will be described in conjunction with FIG. 2, FIG. 3 and FIG. 5.
如场景c所示，包括：As shown in scenario c, including:
601、第一RAN设备向第一UE发送第一信息。相应的，第一UE从第一RAN设备接收第一信息。601. The first RAN device sends first information to the first UE. Correspondingly, the first UE receives the first information from the first RAN device.
步骤601可参考步骤501中的描述，此处不再赘述。For step 601, refer to the description in step 501, which will not be repeated here.
602、第一UE根据第一信息和第五信息确定第一指示信息。602. The first UE determines first indication information according to the first information and the fifth information.
其中，第五信息用于指示所述第一UE支持适配层通信。第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务。Wherein, the fifth information is used to indicate that the first UE supports adaptation layer communication. The first indication information is used to indicate that the first UE supports providing an adaptation layer relay service for the communication between the second UE and the first RAN device.
例如，在该场景中，并非所有的中继UE都支持适配层通信，第一UE在获知该第一UE支持适配层通信(即第五信息)后，再根据第一信息和第五信息确定该第一UE可以为第二UE提供中继。换句话说，如果第一UE获知该第一UE不支持适配层通信，则第一UE确定该第一UE不能为第二UE提供中继。For example, in this scenario, not all relay UEs support adaptation layer communication. The first UE learns that the first UE supports adaptation layer communication (that is, the fifth information), and then according to the first information and the fifth information. The information determines that the first UE can provide a relay for the second UE. In other words, if the first UE learns that the first UE does not support adaptation layer communication, the first UE determines that the first UE cannot provide a relay for the second UE.
603、第一UE向第二UE发送第一指示信息。603. The first UE sends first indication information to the second UE.
例如，第一UE通过中继响应消息或者中继发现消息向第二UE发送第一指示信息。For example, the first UE sends the first indication information to the second UE through a relay response message or a relay discovery message.
在场景c中，由第一UE确定第一UE能否为第二UE提供适配层中继服务。而在场景d中，第一RAN设备仅通过第一UE向第二UE转发第一RAN设备支持适配层通信的指示信息，由第二UE确定第一UE能否为第二UE提供适配层中继服务。In scenario c, the first UE determines whether the first UE can provide the adaptation layer relay service for the second UE. In scenario d, the first RAN device only forwards the indication information that the first RAN device supports adaptation layer communication through the first UE to the second UE, and the second UE determines whether the first UE can provide adaptation for the second UE. Layer relay service.
如场景d所示，包括：As shown in scenario d, including:
604、第一RAN设备向第一UE发送第一指示信息。604. The first RAN device sends first indication information to the first UE.
例如，第一指示信息用于指示第一RAN设备支持适配层通信。For example, the first indication information is used to indicate that the first RAN device supports adaptation layer communication.
由于此时第一指示信息与步骤501中第一信息相同，步骤604可参考步骤501中第一RAN 设备向第一UE发送第一信息的描述，此处不再赘述。Since the first indication information is the same as the first information in step 501 at this time, in step 604, reference may be made to the description of the first RAN device sending the first information to the first UE in step 501, which will not be repeated here.
605、第一UE向第二UE发送第一指示信息。605. The first UE sends first indication information to the second UE.
例如，第一UE可以通过中继响应消息或者中继发现向第二UE发送第一指示信息。For example, the first UE may send the first indication information to the second UE through a relay response message or a relay discovery.
本实施例还包括步骤606。This embodiment also includes step 606.
606、第二UE根据第一指示信息确定第一UE为第二UE提供中继服务。606. The second UE determines, according to the first indication information, that the first UE provides a relay service for the second UE.
可选的，在步骤606之前，还包括：第二UE获知该第一UE支持适配层通信，和/或，第二UE获知第一UE被授权执行中继通信。例如，第二UE通过步骤603或者步骤605中的第一指示信息获知：该第一UE支持适配层通信，和/或，第二UE获知第一UE被授权执行中继通信。Optionally, before step 606, the method further includes: the second UE knows that the first UE supports adaptation layer communication, and/or the second UE knows that the first UE is authorized to perform relay communication. For example, the second UE learns through the first indication information in step 603 or step 605 that the first UE supports adaptation layer communication, and/or the second UE learns that the first UE is authorized to perform relay communication.
当存在多个第一UE时，第二UE确定一个第一UE为第二UE提供中继服务的方法可参考步骤507中的描述，此处不再赘述。When there are multiple first UEs, the method for the second UE to determine that a first UE provides a relay service for the second UE may refer to the description in step 507, which will not be repeated here.
根据本发明实施例的方法，第二UE根据第一指示信息可以选择到可以提供层2中继的第一UE，从而保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the method of the embodiment of the present invention, the second UE can select the first UE that can provide layer 2 relay according to the first indication information, thereby ensuring that the second UE adopts the indirect communication method based on layer 2 relay through the first UE Access to the network, thereby improving the user experience.
可选的，该方法还包括场景e和场景f中任一种场景：第二UE接收第二指示信息，第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务，或者，第二指示信息用于指示第二RAN设备不支持适配层通信。其中，当第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务时，如图6中场景c所示，包括步骤607至609；当第二指示信息用于指示第二RAN设备不支持适配层通信时，如图6中场景f所示，包括步骤610和611。Optionally, the method further includes either scenario e or scenario f: the second UE receives second indication information, and the second indication information is used to indicate that the third UE does not support the second UE and the second RAN device. Communication provides an adaptation layer relay service, or the second indication information is used to indicate that the second RAN device does not support adaptation layer communication. Wherein, when the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for the communication between the second UE and the second RAN device, as shown in scenario c in FIG. 6, steps 607 to 609 are included; When the second indication information is used to indicate that the second RAN device does not support adaptation layer communication, as shown in scenario f in FIG. 6, steps 610 and 611 are included.
如场景e所示，包括：As shown in scenario e, including:
607、第二RAN设备向第三UE发送第三信息。相应的，第三UE从第二RAN设备接收第三信息。607. The second RAN device sends third information to the third UE. Correspondingly, the third UE receives the third information from the second RAN device.
其中，第三信息用于指示第二RAN设备不支持适配层通信。The third information is used to indicate that the second RAN device does not support adaptation layer communication.
例如，该第三信息可以通过SIB消息发送。在这种情况下，第三UE驻留在第二RAN设备服务的小区。可选的，第二RAN设备在发送第三信息之前根据第三UE的中继授权信息获知第一UE可以作为中继，该第三UE的中继授权信息从PCF网元中获取。或者，第三信息可以通过RRC消息发送。可选的，在第三UE注册流程中或者在第三UE的策略更新流程中，第二RAN设备通过AMF网元从PCF网元接收第三UE的中继授权信息，并获知第三UE可以作为中继后，第二RAN设备向第三UE发送第三信息。For example, the third information may be sent through a SIB message. In this case, the third UE camps on the cell served by the second RAN device. Optionally, the second RAN device learns that the first UE can act as a relay according to the relay authorization information of the third UE before sending the third information, and the relay authorization information of the third UE is obtained from the PCF network element. Alternatively, the third information may be sent through an RRC message. Optionally, in the third UE registration process or in the policy update process of the third UE, the second RAN device receives the relay authorization information of the third UE from the PCF network element through the AMF network element, and learns that the third UE can After acting as a relay, the second RAN device sends third information to the third UE.
例如，PCF网元从UDR中获取UE签约信息，并根据UE的签约信息确定中继授权信息。例如，UE的签约信息中包括中继授权信息，PCF网元从UE的签约信息中接收中继授权信息。For example, the PCF network element obtains the UE subscription information from the UDR, and determines the relay authorization information according to the UE's subscription information. For example, the subscription information of the UE includes relay authorization information, and the PCF network element receives the relay authorization information from the subscription information of the UE.
608、第三UE根据第三信息和/或第四信息确定第二指示信息。608. The third UE determines the second indication information according to the third information and/or the fourth information.
其中，第四信息用于指示第三UE不支持适配层通信。第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务。Among them, the fourth information is used to indicate that the third UE does not support adaptation layer communication. The second indication information is used to indicate that the third UE does not support providing an adaptation layer relay service for the communication between the second UE and the second RAN device.
例如，在该场景中，并非所有的中继UE都支持适配层通信，第三UE在获知第三信息和第四信息中任一信息时，第三UE都可以确定该第三UE不能为第二UE提供中继。For example, in this scenario, not all relay UEs support adaptation layer communication. When the third UE learns any of the third information and the fourth information, the third UE can determine that the third UE cannot be The second UE provides a relay.
609、第三UE向第二UE发送第二指示信息。609. The third UE sends second indication information to the second UE.
例如，第三UE通过中继响应消息或者中继发现消息向第二UE发送第二指示信息。For example, the third UE sends the second indication information to the second UE through a relay response message or a relay discovery message.
在场景e中，由第三UE确定第三UE能否为第二UE提供适配层中继服务。而在场景f中，第二RAN设备仅通过第三UE向第二UE转发第二RAN设备不支持适配层通信的指示信息，由 第二UE确定第三UE能否为第二UE提供适配层中继服务。In scenario e, the third UE determines whether the third UE can provide the adaptation layer relay service for the second UE. In scenario f, the second RAN device only forwards the indication information that the second RAN device does not support adaptation layer communication to the second UE through the third UE, and the second UE determines whether the third UE can provide the second UE with adaptation information. Distribution layer relay service.
如场景f所示，包括：As shown in scenario f, including:
610、第二RAN设备向第三UE发送第二指示信息。610. The second RAN device sends second indication information to the third UE.
例如，第二指示信息用于指示第二RAN设备不支持适配层通信。For example, the second indication information is used to indicate that the second RAN device does not support adaptation layer communication.
由于此时第二指示信息与步骤607中第三信息相同，步骤610可参考步骤607中第二RAN设备向第三UE发送第三信息的描述，此处不再赘述。Since the second indication information is the same as the third information in step 607 at this time, in step 610, reference may be made to the description of sending the third information by the second RAN device to the third UE in step 607, which will not be repeated here.
611、第三UE向第二UE发送第二指示信息。611. The third UE sends second indication information to the second UE.
例如，第三UE可以通过中继响应消息或者中继发现向第二UE发送第二指示信息。For example, the third UE may send the second indication information to the second UE through a relay response message or a relay discovery.
根据场景e或场景f的方法，第二UE可以获知不能支持层2中继的第三UE，使得第二UE在选择中继UE时，避免选到第三UE，从而保证了第二UE可以采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。According to the method of scenario e or scenario f, the second UE can learn the third UE that cannot support layer 2 relay, so that when the second UE selects the relay UE, it avoids selecting the third UE, thereby ensuring that the second UE can The indirect communication method based on layer 2 relay is used to access the network, thereby improving the user experience.
图7为本申请实施例提供的又一种基于中继的通信方法的流程图。该方法可以适用于图2所示的通信***。通过该方法，使第一UE在选择小区驻留时，通过从小区的第一RAN设备接收第六信息，可以确定在该小区驻留或者重选小区。如图7所示，该方法可以包括：FIG. 7 is a flowchart of another relay-based communication method provided by an embodiment of the application. This method can be applied to the communication system shown in FIG. 2. With this method, when the first UE selects a cell to camp on, by receiving the sixth information from the first RAN device of the cell, it can be determined to camp on the cell or to reselect the cell. As shown in Figure 7, the method may include:
S701、第一UE从第一RAN设备接收第六信息，第六信息用于指示第一RAN设备是否支持适配层通信。S701. The first UE receives sixth information from the first RAN device, where the sixth information is used to indicate whether the first RAN device supports adaptation layer communication.
例如，该第一UE可以为图2中的中继UE。For example, the first UE may be the relay UE in FIG. 2.
例如，第六信息可以通过SIB消息或者RRC消息发送。For example, the sixth information may be sent through a SIB message or an RRC message.
S702、若第六信息用于指示第一RAN设备支持适配层通信，第一UE根据第六信息确定驻留在第一RAN设备服务的小区；或者，若第六信息用于指示第一RAN设备不支持适配层通信，第一UE根据第一信息确定重选小区。S702. If the sixth information is used to indicate that the first RAN device supports adaptation layer communication, the first UE determines based on the sixth information to camp on the cell served by the first RAN device; or, if the sixth information is used to indicate the first RAN The device does not support adaptation layer communication, and the first UE determines the cell to be reselected according to the first information.
例如，第一UE确定驻留在第一RAN设备服务的小区，也可以理解为，第一UE确定由第一RAN设备为第一UE服务。For example, if the first UE determines to camp on a cell served by the first RAN device, it can also be understood that the first UE determines that the first RAN device serves the first UE.
可选的，第一UE还根据第一RAN设备服务的小区的信号强度确定驻留在该小区。也就是说，只有当第六信息用于指示第一RAN设备支持适配层通信，且第一RAN设备服务的小区的信号强度满足第一UE的接入需求时，第一UE确定驻留在该小区。如果有多个小区的信号强度都满足第一UE的接入要求，则第一UE根据第六信息确定驻留在支持适配层通信的第一RAN设备服务的小区。Optionally, the first UE also determines to camp on the cell according to the signal strength of the cell served by the first RAN device. That is, only when the sixth information is used to indicate that the first RAN device supports adaptation layer communication, and the signal strength of the cell served by the first RAN device meets the access requirements of the first UE, the first UE determines to camp on The cell. If the signal strengths of multiple cells all meet the access requirement of the first UE, the first UE determines, according to the sixth information, to camp on the cell served by the first RAN device supporting the adaptation layer communication.
可选的，在步骤702之前，该方法还包括以下三种情况中的任一种：Optionally, before step 702, the method further includes any one of the following three situations:
第一种情况：第一UE确定该UE支持适配层通信；The first case: the first UE determines that the UE supports adaptation layer communication;
第二种情况：第一UE从第二RAN设备接收第二信息，第二信息用于指示第一UE被授权执行中继通信，其中，第二RAN设备为在UE接入第一RAN设备之前为第一UE服务的RAN设备；The second case: the first UE receives second information from the second RAN device, the second information is used to indicate that the first UE is authorized to perform relay communication, where the second RAN device is before the UE accesses the first RAN device RAN equipment serving the first UE;
第三种情况：第一UE从第一RAN设备接收第三信息，第三信息用于指示第一UE被授权执行中继通信。例如，当第一UE接入第一RAN设备服务的小区时未考虑第一RAN设备是否支持适配层通信，当第一UE驻留小区成功后从AMF接收第一UE的中继授权信息，再根据第六信息确定是继续驻留该小区还是进行小区重选。The third case: the first UE receives third information from the first RAN device, and the third information is used to indicate that the first UE is authorized to perform relay communication. For example, when the first UE accesses the cell served by the first RAN device, it does not consider whether the first RAN device supports adaptation layer communication, and when the first UE camps on the cell successfully, it receives the relay authorization information of the first UE from the AMF, According to the sixth information, it is determined whether to continue camping on the cell or to perform cell reselection.
根据本实施例提供的方法，第一UE在选择小区驻留时，通过从小区的第一RAN设备接收第六信息，可以确定是否在该小区驻留。通过该方法可以保证第一UE驻留的小区的第一RAN设备可以支持适配层通信，进而保证了该第一UE可以作为提供基于层2中继服务的中继UE。According to the method provided in this embodiment, when the first UE selects a cell to camp on, by receiving the sixth information from the first RAN device of the cell, it can determine whether to camp on the cell. This method can ensure that the first RAN device of the cell where the first UE resides can support adaptation layer communication, thereby ensuring that the first UE can serve as a relay UE that provides a layer 2 relay service.
图8为本申请实施例提供的又一种基于中继的通信方法的流程图。通过图8所示的方法， PCF网元在确定第一UE是否能被授权作为中继UE之前，获取了RAN设备支持适配层通信的第一信息，从而可以保证PCF网元授权作为中继UE的第一UE可以提供基于层2中继的中继服务。图8将结合图2和图5进行描述。FIG. 8 is a flowchart of another relay-based communication method provided by an embodiment of the application. Through the method shown in FIG. 8, before determining whether the first UE can be authorized as a relay UE, the PCF network element obtains the first information that the RAN device supports communication at the adaptation layer, thereby ensuring that the PCF network element is authorized to act as a relay. The first UE of the UE may provide a layer 2 relay-based relay service. FIG. 8 will be described in conjunction with FIG. 2 and FIG. 5.
801、AMF网元获取第一信息。801. The AMF network element obtains first information.
例如，RAN设备向AMF网元发送第一信息。相应的,AMF网元从RAN设备接收第一信息。For example, the RAN device sends the first information to the AMF network element. Correspondingly, the AMF network element receives the first information from the RAN device.
其中，第一信息用于指示RAN设备支持适配层通信。该第一信息可参考图3的步骤S301中对第一信息的描述，此处不再赘述。Among them, the first information is used to indicate that the RAN device supports adaptation layer communication. For the first information, reference may be made to the description of the first information in step S301 in FIG. 3, which will not be repeated here.
例如，RAN设备在与AMF网元进行N2接口建立流程时，通过接口建立消息向AMF网元发送第一信息。For example, when the RAN device performs the N2 interface establishment process with the AMF network element, it sends the first information to the AMF network element through the interface establishment message.
可选的，AMF网元根据第一信息确定RAN设备支持适配层通信，并向第一UE发送第一信息。Optionally, the AMF network element determines according to the first information that the RAN device supports adaptation layer communication, and sends the first information to the first UE.
或者，网络管理设备向AMF网元配置第一信息。例如，网络管理设备从RAN设备获取RAN设备支持适配层通信的信息。Or, the network management device configures the first information to the AMF network element. For example, the network management device obtains information from the RAN device that the RAN device supports communication at the adaptation layer.
803、AMF网元向PCF网元发送第一信息。相应的,PCF网元从AMF网元接收第一信息。803. The AMF network element sends the first information to the PCF network element. Correspondingly, the PCF network element receives the first information from the AMF network element.
例如，AMF网元通过策略获取消息向PCF网元发送第一信息。For example, the AMF network element sends the first information to the PCF network element through a policy acquisition message.
804、PCF网元根据第一信息和第一UE的签约信息确定第七信息。804. The PCF network element determines seventh information according to the first information and the subscription information of the first UE.
例如，第七信息用于指示第一UE被授权在该RAN设备服务的小区中驻留时执行中继通信。换句话说，第七信息用于指示第一UE被授权驻留在该RAN设备对应的小区时执行中继通信，或者说，第七信息用于指示第一UE被授权为第二UE和该RAN设备之间通信提供中继服务。For example, the seventh information is used to indicate that the first UE is authorized to perform relay communication when camping in the cell served by the RAN device. In other words, the seventh information is used to indicate that the first UE is authorized to camp on the cell corresponding to the RAN device to perform relay communication, or in other words, the seventh information is used to indicate that the first UE is authorized to be the second UE and the Communication between RAN devices provides relay services.
也就是说，PCF确定第一UE能被授权作为中继UE不仅要考虑第一UE的签约信息中的中继授权信息，还需要确定第一UE接入的RAN设备支持适配层通信。In other words, the PCF determines that the first UE can be authorized as a relay UE not only to consider the relay authorization information in the subscription information of the first UE, but also to determine that the RAN device accessed by the first UE supports adaptation layer communication.
可选的，在步骤804之前，PCF网元从UDR中获取第一UE的签约信息。例如，该签约信息用于指示第一UE被授权执行中继通信。Optionally, before step 804, the PCF network element obtains the subscription information of the first UE from the UDR. For example, the subscription information is used to indicate that the first UE is authorized to perform relay communication.
805、PCF网元向第一UE发送第七信息。相应的,第一UE从PCF网元接收第七信息。805. The PCF network element sends seventh information to the first UE. Correspondingly, the first UE receives the seventh information from the PCF network element.
例如，第一UE为图2中的中继UE。For example, the first UE is the relay UE in FIG. 2.
例如，PCF网元通过N1N2消息传递消息(例如，N1N2MessageTransfer message)向AMF网元发送第七信息，AMF网元再通过下行非接入层(non-access stratum，NAS)传送消息(例如，DL NAS TRANSPORT message)向第一UE发送第七信息。For example, the PCF network element sends the seventh message to the AMF network element through the N1N2 message transfer message (for example, N1N2MessageTransfer message), and the AMF network element transmits the message (for example, DL NAS) through the downlink non-access stratum (NAS). TRANSPORT message) sends the seventh message to the first UE.
可选的，第一UE接收第七信息后，存储该第七信息。Optionally, after receiving the seventh information, the first UE stores the seventh information.
可选的，在步骤803之前，该方法还包括步骤802。Optionally, before step 803, the method further includes step 802.
802、第一UE向AMF网元发送第三信息。相应的,AMF网元从第一UE接收第三信息。802. The first UE sends third information to the AMF network element. Correspondingly, the AMF network element receives the third information from the first UE.
其中，该第三信息用于指示第一UE支持适配层通信。例如，第三信息为D2D能力信息。Wherein, the third information is used to indicate that the first UE supports adaptation layer communication. For example, the third information is D2D capability information.
例如，第一UE通过注册请求消息向AMF网元发送第三信息。For example, the first UE sends the third information to the AMF network element through a registration request message.
例如，当步骤802执行时，步骤803可以描述为：AMF网元根据第三信息向PCF网元发送第一信息。For example, when step 802 is performed, step 803 can be described as: the AMF network element sends the first information to the PCF network element according to the third information.
可选的，AMF网元根据第三信息向PCF网元发送第一信息。Optionally, the AMF network element sends the first information to the PCF network element according to the third information.
根据本实施例提供的方法，PCF网元通过获取RAN设备支持适配层通信的第一信息，根据第一信息和第一UE的签约信息可以授权第一UE作为中继UE。由此，通过该方法可以保证第一UE可以作为提供基于层2中继服务的中继UE。According to the method provided in this embodiment, the PCF network element obtains the first information that the RAN device supports communication at the adaptation layer, and can authorize the first UE as a relay UE according to the first information and the subscription information of the first UE. Therefore, this method can ensure that the first UE can serve as a relay UE that provides a layer 2 relay service.
上述本申请提供的实施例中，分别从各个网元本身、以及从各个网元之间交互的角度对本申请实施例提供的一种基于中继的通信方法的各方案进行了介绍。可以理解的是，各个网 元和设备，例如上述RAN设备、AMF网元、第一UE、第二UE、和PCF网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。In the above-mentioned embodiments provided by the present application, the solutions of the relay-based communication method provided by the embodiments of the present application are respectively introduced from the perspective of each network element itself and the interaction between each network element. It is understandable that each network element and device, such as the above-mentioned RAN device, AMF network element, first UE, second UE, and PCF network element, in order to realize the above functions, includes corresponding hardware structures and/or Software module. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
例如，当上述通过软件模块来实现相应的功能。该基于中继的通信装置可包括接收模块901和发送模块903，可选的，还包括处理模块902，如图9A所示。For example, when the above-mentioned software modules are used to realize the corresponding functions. The relay-based communication device may include a receiving module 901 and a sending module 903, and optionally, a processing module 902, as shown in FIG. 9A.
在一个实施例中，该基于中继的装置可用于执行上述图3、图5和图6中第一UE的操作。例如，该基于中继的通信装置包括：In one embodiment, the relay-based device may be used to perform the operations of the first UE in FIG. 3, FIG. 5, and FIG. 6 described above. For example, the relay-based communication device includes:
接收模块901，用于从RAN设备接收第一信息，其中，第一信息用于指示RAN设备支持适配层通信。发送模块903，用于根据第一信息向第二UE发送第二信息，其中，第二信息用于指示第一UE支持为第二UE提供中继服务。The receiving module 901 is configured to receive first information from a RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication. The sending module 903 is configured to send second information to the second UE according to the first information, where the second information is used to indicate that the first UE supports providing a relay service for the second UE.
由此，本发明实施例中，第一UE通过从RAN设备接收第一信息，可以确定RAN设备支持适配层通信，并向第二UE发送第二信息，从而保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。Therefore, in the embodiment of the present invention, by receiving the first information from the RAN device, the first UE can determine that the RAN device supports adaptation layer communication, and send the second information to the second UE, thereby ensuring that the second UE passes through the first UE. The indirect communication method based on layer 2 relay is used to access the network, thereby improving the user experience.
可选的，该装置包括处理模块902，该处理模块902用于根据第一信息确定第二信息，该发送模块903用于向第二UE发送第二信息。或者，该处理模块902用于根据第一信息和第三信息确定第二信息，该发送模块903用于向第二UE发送第二信息，其中，第三信息用于指示第一UE支持适配层通信。或者，该处理模块902用于根据第一信息和第四信息确定第二信息，该发送模块903用于向第二UE发送第二信息，其中，第四信息用于指示第一UE被授权执行中继通信。Optionally, the device includes a processing module 902 configured to determine the second information according to the first information, and the sending module 903 configured to send the second information to the second UE. Alternatively, the processing module 902 is configured to determine the second information according to the first information and the third information, and the sending module 903 is configured to send the second information to the second UE, where the third information is used to indicate that the first UE supports adaptation Layer communication. Alternatively, the processing module 902 is configured to determine the second information according to the first information and the fourth information, and the sending module 903 is configured to send the second information to the second UE, where the fourth information is used to indicate that the first UE is authorized to perform Relay communication.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图3、图5和图6中第一UE的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the first UE in FIG. 3, FIG. 5, and FIG. 6, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图3、图5和图6中第二UE的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication device shown in FIG. 9A may also be used to perform operations of the second UE in FIG. 3, FIG. 5, and FIG. 6. For example, the relay-based communication device includes:
接收模块901，用于接收第一指示信息，其中，第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务，或者，第一指示信息用于指示第一RAN设备支持适配层通信。第二UE根据第一指示信息确定第一UE为第二UE提供中继服务。The receiving module 901 is configured to receive first indication information, where the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, or the first indication information Used to instruct the first RAN device to support adaptation layer communication. The second UE determines according to the first indication information that the first UE provides a relay service for the second UE.
由此，本发明实施例中，第二UE根据接收到的第一指示信息确定第一UE，可以保证第二UE通过第一UE采用基于层2中继的非直接通信方式接入网络，由此提高了用户体验。Therefore, in the embodiment of the present invention, the second UE determines the first UE according to the received first indication information, which can ensure that the second UE accesses the network through the first UE in an indirect communication mode based on layer 2 relay, and This improves the user experience.
可选的，当第一指示信息用于指示第一UE支持为第二UE与第一RAN设备的通信提供适配层中继服务时，该接收模块901用于从第一UE接收第一指示信息，其中，第一指示信息根据第一信息和第二信息确定，第一信息用于指示第一RAN设备支持适配层通信，第二信息用于指示第一UE支持适配层通信。Optionally, when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the second UE and the first RAN device, the receiving module 901 is configured to receive the first indication from the first UE Information, where the first indication information is determined according to the first information and the second information, the first information is used to indicate that the first RAN device supports adaptation layer communication, and the second information is used to indicate that the first UE supports adaptation layer communication.
可选的，当第一指示信息用于指示第一RAN设备支持适配层通信时，该接收模块901用于通过第一UE从第一RAN设备接收第一指示信息。Optionally, when the first indication information is used to indicate that the first RAN device supports adaptation layer communication, the receiving module 901 is configured to receive the first indication information from the first RAN device through the first UE.
可选的，该接收模块901还用于接收第二指示信息，其中，第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适配层中继服务，或者，第二指示信息用于指示第二RAN设备不支持适配层通信。Optionally, the receiving module 901 is further configured to receive second indication information, where the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for communication between the second UE and the second RAN device, Or, the second indication information is used to indicate that the second RAN device does not support adaptation layer communication.
可选的，当第二指示信息用于指示第三UE不支持为第二UE与第二RAN设备的通信提供适 配层中继服务时，该接收模块901用于从第三UE接收第二指示信息，其中，第二指示信息根据第三信息和/或第四信息确定，第三信息用于指示第二RAN设备不支持适配层通信，第四信息用于指示第三UE不支持适配层通信。Optionally, when the second indication information is used to indicate that the third UE does not support the provision of adaptation layer relay services for the communication between the second UE and the second RAN device, the receiving module 901 is used to receive the second indication from the third UE. Indication information, where the second indication information is determined according to the third information and/or the fourth information, the third information is used to indicate that the second RAN device does not support adaptation layer communication, and the fourth information is used to indicate that the third UE does not support adaptation layer communication. Distribution layer communication.
可选的，当第二指示信息用于指示第二RAN设备不支持适配层通信时，该接收模块901用于通过第三UE从第二RAN设备接收第二指示信息。Optionally, when the second indication information is used to indicate that the second RAN device does not support adaptation layer communication, the receiving module 901 is configured to receive the second indication information from the second RAN device through the third UE.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图3、图5和图6中第二UE的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the second UE in FIG. 3, FIG. 5, and FIG. 6, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图7中第二UE的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication device shown in FIG. 9A may also be used to perform the operation of the second UE in FIG. 7. For example, the relay-based communication device includes:
接收模块901，用于从第一RAN设备接收第一信息，第一信息用于指示第一RAN设备是否支持适配层通信。若第一信息用于指示第一RAN设备支持适配层通信，处理模块902用于根据第一信息确定驻留在第一RAN设备服务的小区；或者，若第一信息用于指示第一RAN设备不支持适配层通信，处理模块902用于根据第一信息确定重选小区。The receiving module 901 is configured to receive first information from a first RAN device, where the first information is used to indicate whether the first RAN device supports adaptation layer communication. If the first information is used to indicate that the first RAN device supports adaptation layer communication, the processing module 902 is configured to determine based on the first information to reside in a cell served by the first RAN device; or, if the first information is used to indicate that the first RAN The device does not support adaptation layer communication, and the processing module 902 is configured to determine a reselection cell according to the first information.
由此，本发明实施例中，UE在选择小区驻留时，通过从小区的第一RAN设备接收第一信息，可以确定是否在该小区驻留。通过该方法可以保证UE驻留的小区的第一RAN设备可以支持适配层通信，进而保证了该UE可以作为提供基于层2中继服务的中继UE。Therefore, in the embodiment of the present invention, when the UE selects a cell to camp on, by receiving the first information from the first RAN device of the cell, it can determine whether to camp on the cell. Through this method, it can be ensured that the first RAN device of the cell where the UE resides can support adaptation layer communication, thereby ensuring that the UE can be used as a relay UE that provides a layer 2 relay service.
可选的，处理模块902用于确定UE支持适配层通信；或者，接收模块901用于从第二RAN设备接收第二信息，其中，第二信息用于指示UE被授权执行中继通信，第二RAN设备为在UE接入第一RAN设备之前为UE服务的RAN设备；或者，接收模块901用于从第一RAN设备接收第三信息，其中，第三信息用于指示UE被授权执行中继通信。Optionally, the processing module 902 is configured to determine that the UE supports adaptation layer communication; or, the receiving module 901 is configured to receive second information from a second RAN device, where the second information is used to indicate that the UE is authorized to perform relay communication, The second RAN device is a RAN device that serves the UE before the UE accesses the first RAN device; or, the receiving module 901 is used to receive third information from the first RAN device, where the third information is used to indicate that the UE is authorized to perform Relay communication.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图7中第二UE的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the second UE in FIG. 7, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图8中PCF的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication device shown in FIG. 9A may also be used to perform the operation of the PCF in FIG. 8. For example, the relay-based communication device includes:
接收模块901，用于从RAN设备接收第一信息，其中，第一信息用于指示RAN设备支持适配层通信。处理模块902，用于根据第一信息和UE的签约信息确定第二信息，其中，第二信息用于指示UE被授权在RAN设备服务的小区中驻留时执行中继通信，签约信息用于指示UE被授权执行中继通信。发送模块903，用于向UE发送第二信息。The receiving module 901 is configured to receive first information from a RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication. The processing module 902 is configured to determine the second information according to the first information and the subscription information of the UE, where the second information is used to indicate that the UE is authorized to perform relay communication when camping in a cell served by the RAN device, and the subscription information is used for Indicates that the UE is authorized to perform relay communication. The sending module 903 is configured to send second information to the UE.
由此，本发明实施例中，PCF网元在确定第一UE是否能被授权作为中继UE之前，获取了RAN设备支持适配层通信的第一信息，从而可以保证PCF网元授权作为中继UE的第一UE可以提供基于层2中继的中继服务。Therefore, in the embodiment of the present invention, before determining whether the first UE can be authorized as a relay UE, the PCF network element obtains the first information that the RAN device supports communication at the adaptation layer, thereby ensuring that the PCF network element is authorized to act as a medium The first UE following the UE may provide a layer 2 relay-based relay service.
可选的，该接收模块901用于从UDR网元获取签约信息。Optionally, the receiving module 901 is configured to obtain subscription information from the UDR network element.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图8中PCF的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the PCF in FIG. 8, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图8中AMF的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication device shown in FIG. 9A may also be used to perform the operation of the AMF in FIG. 8. For example, the relay-based communication device includes:
接收模块901，用于从RAN设备接收第一信息，其中，第一信息用于指示RAN设备支持适配层通信。该接收模块901还用于从UE接收第二信息，其中，第二信息用于指示UE支持适配层通信。发送模块903，用于根据第二信息向PCF网元发送第一信息。The receiving module 901 is configured to receive first information from a RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication. The receiving module 901 is further configured to receive second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication. The sending module 903 is configured to send the first information to the PCF network element according to the second information.
由此，本发明实施例中，AMF网元获知RAN设备支持适配层通信后向PCF网元发送第一信息，使PCF网元可以根据第一信息和UE(例如，中继UE)的签约信息确定第二信息，第二信 息用于指示UE被授权在RAN设备服务的小区中驻留时执行中继通信。Therefore, in the embodiment of the present invention, the AMF network element sends the first information to the PCF network element after knowing that the RAN device supports communication at the adaptation layer, so that the PCF network element can contract with the UE (for example, relay UE) according to the first information The information determines the second information, and the second information is used to indicate that the UE is authorized to perform relay communication when camping in the cell served by the RAN device.
可选的，第二信息为D2D能力信息。Optionally, the second information is D2D capability information.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图8中AMF的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the AMF in FIG. 8, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图8中AMF的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication device shown in FIG. 9A may also be used to perform the operation of the AMF in FIG. 8. For example, the relay-based communication device includes:
接收模块901，用于从RAN设备接收第一信息，其中，第一信息用于指示RAN设备支持适配层通信。处理模块902，用于确定RAN支持适配层通信。发送模块903，用于向UE发送第一信息。The receiving module 901 is configured to receive first information from a RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication. The processing module 902 is configured to determine that the RAN supports adaptation layer communication. The sending module 903 is configured to send the first information to the UE.
由此，本发明实施例中，AMF网元获知RAN设备支持适配层通信后向中继UE发送第一信息，使中继UE获知RAN设备支持适配层通信。Therefore, in the embodiment of the present invention, the AMF network element learns that the RAN device supports the adaptation layer communication and sends the first information to the relay UE, so that the relay UE learns that the RAN device supports the adaptation layer communication.
可选的，该接收模块901还用于从UE接收第二信息，其中，第二信息用于指示UE支持适配层通信。发送模块903还用于根据第二信息向UE发送第一信息。Optionally, the receiving module 901 is further configured to receive second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication. The sending module 903 is further configured to send the first information to the UE according to the second information.
此外，该基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图8中AMF的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the AMF in FIG. 8, which will not be repeated here.
在另一个实施例中，图9A所示的基于中继的通信装置还可用于执行图3中RAN设备、图5至图7中第一RAN设备的操作。例如，该基于中继的通信装置包括：In another embodiment, the relay-based communication apparatus shown in FIG. 9A may also be used to perform operations of the RAN device in FIG. 3 and the first RAN device in FIG. 5 to FIG. 7. For example, the relay-based communication device includes:
处理模块902，用于确定RAN设备支持通过适配层与第一终端设备UE通信。发送模块903，用于向第一UE或者AMF网元发送第一信息，其中，第一信息用于指示RAN设备支持通过适配层与第一UE通信。The processing module 902 is configured to determine that the RAN device supports communication with the first terminal device UE through the adaptation layer. The sending module 903 is configured to send the first information to the first UE or the AMF network element, where the first information is used to indicate that the RAN device supports communication with the first UE through the adaptation layer.
由此，本发明实施例中，第一UE或者AMF网元可以获知RAN设备支持通过适配层与第一UE通信。Therefore, in the embodiment of the present invention, the first UE or the AMF network element can learn that the RAN device supports communication with the first UE through the adaptation layer.
此外，基于中继的通信装置中的接收模块901、处理模块902和发送模块903还可实现图8中AMF的其他操作或功能，此处不再赘述。In addition, the receiving module 901, the processing module 902, and the sending module 903 in the relay-based communication device can also implement other operations or functions of the AMF in FIG. 8, which will not be repeated here.
图9B示出了上述实施例中所涉及的基于中继的通信装置的另一种可能的结构示意图。基于中继的通信装置包括收发器904和处理器905，如图9B所示。例如，处理器905可以为通用微处理器、数据处理电路、专用集成电路(application specific integrated circuit，ASIC)或者现场可编程门阵列(field-programmable gate arrays，FPGA)电路。所述基于中继的通信装置还可以包括存储器906，例如，存储器为随机存取存储器(random access memory，RAM)。所述存储器用于与处理器905耦合，其保存该基于中继的通信装置必要的计算机程序9061。FIG. 9B shows another possible structural schematic diagram of the relay-based communication device involved in the foregoing embodiment. The relay-based communication device includes a transceiver 904 and a processor 905, as shown in FIG. 9B. For example, the processor 905 may be a general-purpose microprocessor, a data processing circuit, an application specific integrated circuit (ASIC) or a field-programmable gate array (FPGA) circuit. The relay-based communication device may further include a memory 906, for example, the memory is a random access memory (RAM). The memory is used for coupling with the processor 905, and it stores a computer program 9061 necessary for the relay-based communication device.
此外，上述实施例中所涉及的基于中继的通信装置还提供了一种载体907，所述载体内保存有该基于中继的通信装置的计算机程序9071，可以将计算机程序9071加载到处理器905中。上述载体可以为光信号、电信号、电磁信号或者计算机可读存储介质(例如，硬盘)。In addition, the relay-based communication device involved in the above-mentioned embodiments further provides a carrier 907 in which the computer program 9071 of the relay-based communication device is stored, and the computer program 9071 can be loaded into the processor. 905 in. The above-mentioned carrier may be an optical signal, an electric signal, an electromagnetic signal, or a computer-readable storage medium (for example, a hard disk).
当上述计算机程序9061或9071在计算机(例如，处理器905)上运行时，可使得计算机执行上述的方法。When the above-mentioned computer program 9061 or 9071 runs on a computer (for example, the processor 905), the computer can be caused to execute the above-mentioned method.
在一个实施例中，处理器905被配置为第一UE(例如，图3、图5和图6中第一UE)的其他操作或功能。收发器904用于实现第一UE与RAN设备/第二UE之间的通信。In one embodiment, the processor 905 is configured as other operations or functions of the first UE (for example, the first UE in FIG. 3, FIG. 5, and FIG. 6). The transceiver 904 is used to implement communication between the first UE and the RAN device/second UE.
在另一个实施例中，处理器905被配置为第二UE(例如，图3、图5和图6中第二UE)的其他操作或功能。收发器904用于实现第二UE与第一UE/第一RAN设备之间的通信。In another embodiment, the processor 905 is configured as other operations or functions of the second UE (for example, the second UE in FIG. 3, FIG. 5, and FIG. 6). The transceiver 904 is used to implement communication between the second UE and the first UE/first RAN device.
在另一个实施例中，处理器905被配置为PCF(例如，图8中PCF)的其他操作或功能。 收发器904用于实现PCF与RAN设备/UDR网元之间的通信。In another embodiment, the processor 905 is configured as other operations or functions of the PCF (for example, the PCF in FIG. 8). The transceiver 904 is used to implement communication between the PCF and the RAN device/UDR network element.
在另一个实施例中，处理器905被配置为AMF(例如，图8中AMF)的其他操作或功能。收发器904用于实现AMF与RAN设备/UE之间的通信。In another embodiment, the processor 905 is configured for other operations or functions of the AMF (eg, AMF in FIG. 8). The transceiver 904 is used to implement communication between the AMF and the RAN device/UE.
以上模块或单元的一个或多个可以软件、硬件或二者结合来实现。当以上任一模块或单元以软件实现的时候，所述软件以计算机程序指令的方式存在，并被存储在存储器中，处理器可以用于执行所述程序指令并实现以上方法流程。所述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。该处理器可以内置于SoC(片上***)或专用集成电路(application specific integrated circuit，ASIC)，也可是一个独立的半导体芯片。该处理器内处理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。One or more of the above modules or units can be implemented by software, hardware or a combination of both. When any of the above modules or units are implemented by software, the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and implement the above method flow. The processor may include, but is not limited to, at least one of the following: central processing unit (CPU), microprocessor, digital signal processor (DSP), microcontroller (microcontroller unit, MCU), or artificial intelligence Various computing devices such as processors 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 built in SoC (system on chip) or application specific integrated circuit (ASIC), or it can be an independent semiconductor chip. The processor's internal processing is used to execute software instructions for calculations or processing, and may further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device) , Or a logic circuit that implements dedicated logic operations.
当以上模块或单元以硬件实现的时候，该硬件可以是CPU、微处理器、DSP、MCU、人工智能处理器、ASIC、SoC、FPGA、PLD、专用数字电路、硬件加速器或非集成的分立器件中的任一个或任一组合，其可以运行必要的软件或不依赖于软件以执行以上方法流程。When the above modules or units are implemented in hardware, the hardware can be CPU, microprocessor, DSP, MCU, artificial intelligence processor, ASIC, SoC, FPGA, PLD, dedicated digital circuit, hardware accelerator or non-integrated discrete device For any one or any combination of the above, it can run necessary software or does not rely on software to perform the above method flow.
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention. The protection scope, any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims (25)

  1. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    第一终端设备UE从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；The first terminal device UE receives first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    所述第一UE根据所述第一信息向第二UE发送第二信息，所述第二信息用于指示所述第一UE支持为所述第二UE提供中继服务。The first UE sends second information to the second UE according to the first information, where the second information is used to indicate that the first UE supports providing a relay service for the second UE.
  2. 根据权利要求1所述的方法，其特征在于，所述第一UE根据所述第一信息向第二UE发送第二信息，包括：The method according to claim 1, wherein the first UE sending second information to the second UE according to the first information comprises:
    所述第一UE根据所述第一信息确定所述第二信息，所述第一UE向所述第二UE发送所述第二信息；或者，The first UE determines the second information according to the first information, and the first UE sends the second information to the second UE; or,
    所述第一UE根据所述第一信息和第三信息确定所述第二信息，所述第一UE向所述第二UE发送所述第二信息，所述第三信息用于指示所述第一UE支持适配层通信；或者，The first UE determines the second information according to the first information and the third information, the first UE sends the second information to the second UE, and the third information is used to indicate the The first UE supports adaptation layer communication; or,
    所述第一UE根据所述第一信息和第四信息确定所述第二信息，所述第一UE向所述第二UE发送所述第二信息，所述第四信息用于指示所述第一UE被授权执行中继通信。The first UE determines the second information according to the first information and fourth information, the first UE sends the second information to the second UE, and the fourth information is used to indicate the The first UE is authorized to perform relay communication.
  3. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    第二终端设备UE接收第一指示信息，所述第一指示信息用于指示第一UE支持为所述第二UE与第一RAN设备的通信提供适配层中继服务，或者，所述第一指示信息用于指示第一RAN设备支持适配层通信；The second terminal equipment UE receives the first indication information, where the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for the communication between the second UE and the first RAN device, or the second UE An indication information is used to indicate that the first RAN device supports adaptation layer communication;
    所述第二UE根据所述第一指示信息确定所述第一UE为所述第二UE提供中继服务。The second UE determines, according to the first indication information, that the first UE provides a relay service for the second UE.
  4. 根据权利要求3所述的方法，其特征在于，当所述第一指示信息用于指示第一UE支持为所述第二UE与第一RAN设备的通信提供适配层中继服务时，所述第二UE接收第一指示信息，包括：The method according to claim 3, wherein when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for the communication between the second UE and the first RAN device, the The receiving of the first indication information by the second UE includes:
    所述第二UE从所述第一UE接收所述第一指示信息，所述第一指示信息根据第一信息和第二信息确定，所述第一信息用于指示所述第一RAN设备支持适配层通信，所述第二信息用于指示所述第一UE支持适配层通信。The second UE receives the first indication information from the first UE, the first indication information is determined according to the first information and the second information, and the first information is used to indicate that the first RAN device supports Adaptation layer communication, where the second information is used to indicate that the first UE supports adaptation layer communication.
  5. 根据权利要求3所述的方法，其特征在于，当所述第一指示信息用于指示第一RAN设备支持适配层通信时，所述第二UE接收第一指示信息，包括：The method according to claim 3, wherein when the first indication information is used to indicate that the first RAN device supports adaptation layer communication, the second UE receiving the first indication information comprises:
    所述第二UE通过所述第一UE从所述第一RAN设备接收所述第一指示信息。The second UE receives the first indication information from the first RAN device through the first UE.
  6. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    终端设备UE从第一无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述第一RAN设备是否支持适配层通信；The terminal device UE receives first information from a first radio access network RAN device, where the first information is used to indicate whether the first RAN device supports adaptation layer communication;
    若所述第一信息用于指示所述第一RAN设备支持适配层通信，所述UE根据所述第一信息确定驻留在所述第一RAN设备服务的小区；或者，If the first information is used to indicate that the first RAN device supports adaptation layer communication, the UE determines according to the first information to camp on the cell served by the first RAN device; or,
    若所述第一信息用于指示所述第一RAN设备不支持适配层通信，所述UE根据所述第一信息确定重选小区。If the first information is used to indicate that the first RAN device does not support adaptation layer communication, the UE determines a cell to be reselected according to the first information.
  7. 根据权利要求6所述的方法，其特征在于，还包括：The method according to claim 6, further comprising:
    所述UE确定所述UE支持适配层通信；或者，The UE determines that the UE supports adaptation layer communication; or,
    所述UE从第二RAN设备接收第二信息，所述第二信息用于指示所述UE被授权执行中继通信，所述第二RAN设备为在所述UE接入所述第一RAN设备之前为所述UE服务的RAN设备；或者，The UE receives second information from a second RAN device, the second information is used to indicate that the UE is authorized to perform relay communication, and the second RAN device is used when the UE accesses the first RAN device The RAN equipment previously serving the UE; or,
    所述UE从所述第一RAN设备接收第三信息，所述第三信息用于指示所述UE被授权执行中继通信。The UE receives third information from the first RAN device, where the third information is used to indicate that the UE is authorized to perform relay communication.
  8. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    策略控制功能PCF网元从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；The policy control function PCF network element receives first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    所述PCF网元根据所述第一信息和所述UE的签约信息确定第二信息，所述第二信息用于指示所述UE被授权在所述RAN设备服务的小区中驻留时执行中继通信，所述签约信息用于指示所述UE被授权执行中继通信；The PCF network element determines second information according to the first information and the subscription information of the UE, and the second information is used to indicate that the UE is authorized to camp in the cell served by the RAN device. After communication, the subscription information is used to indicate that the UE is authorized to perform relay communication;
    所述PCF网元向所述UE发送所述第二信息。The PCF network element sends the second information to the UE.
  9. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    接入和移动性管理功能AMF网元从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；The access and mobility management function AMF network element receives first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    所述AMF网元从UE接收第二信息，所述第二信息用于指示所述UE支持适配层通信；The AMF network element receives second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication;
    所述AMF网元根据所述第二信息向策略控制功能PCF网元发送所述第一信息。The AMF network element sends the first information to the policy control function PCF network element according to the second information.
  10. 根据权利要求9所述的方法，其特征在于，所述第二信息为设备到设备D2D能力信息。The method according to claim 9, wherein the second information is device-to-device D2D capability information.
  11. 一种基于中继的通信方法，其特征在于，包括：A relay-based communication method, characterized in that it includes:
    接入和移动性管理功能AMF网元从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；The access and mobility management function AMF network element receives first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    所述AMF网元确定所述RAN支持适配层通信；The AMF network element determines that the RAN supports adaptation layer communication;
    所述AMF网元向所述UE发送所述第一信息。The AMF network element sends the first information to the UE.
  12. 根据权利要求11所述的方法，其特征在于，还包括：The method according to claim 11, further comprising:
    所述AMF网元从所述UE接收第二信息，所述第二信息用于指示所述UE支持适配层通信；The AMF network element receives second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication;
    所述AMF网元根据所述第二信息向所述UE发送所述第一信息。The AMF network element sends the first information to the UE according to the second information.
  13. 一种终端设备，其特征在于，包括：A terminal device, characterized in that it comprises:
    接收模块，用于从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；A receiving module, configured to receive first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    发送模块，用于根据所述第一信息向第二UE发送第二信息，所述第二信息用于指示所述第一UE支持为所述第二UE提供中继服务。The sending module is configured to send second information to a second UE according to the first information, where the second information is used to indicate that the first UE supports providing a relay service for the second UE.
  14. 根据权利要求13所述的终端设备，其特征在于，还包括：The terminal device according to claim 13, further comprising:
    处理模块，用于根据所述第一信息确定所述第二信息，所述发送模块用于向所述第二UE发送所述第二信息；或者，The processing module is configured to determine the second information according to the first information, and the sending module is configured to send the second information to the second UE; or,
    处理模块，用于根据所述第一信息和第三信息确定所述第二信息，所述发送模块用于向所述第二UE发送所述第二信息，所述第三信息用于指示所述第一UE支持适配层通信；或者，The processing module is configured to determine the second information according to the first information and the third information, the sending module is configured to send the second information to the second UE, and the third information is used to indicate the The first UE supports adaptation layer communication; or,
    处理模块，用于根据所述第一信息和第四信息确定所述第二信息，所述发送模块用于向所述第二UE发送所述第二信息，所述第四信息用于指示所述第一UE被授权执行中继通信。The processing module is configured to determine the second information according to the first information and the fourth information, the sending module is configured to send the second information to the second UE, and the fourth information is used to indicate the The first UE is authorized to perform relay communication.
  15. 一种终端设备，其特征在于，包括：A terminal device, characterized in that it comprises:
    接收模块，用于接收第一指示信息，所述第一指示信息用于指示第一UE支持为所述终端设备与第一RAN设备的通信提供适配层中继服务，或者，所述第一指示信息用于指示第一RAN设备支持适配层通信；The receiving module is configured to receive first indication information, where the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for the communication between the terminal device and the first RAN device, or the first The indication information is used to indicate that the first RAN device supports adaptation layer communication;
    处理模块，用于根据所述第一指示信息确定所述第一UE为所述终端设备提供中继服务。The processing module is configured to determine, according to the first indication information, that the first UE provides a relay service for the terminal device.
  16. 根据权利要求15所述的终端设备，其特征在于，当所述第一指示信息用于指示第一 UE支持为所述终端设备与第一RAN设备的通信提供适配层中继服务时，包括：The terminal device according to claim 15, wherein when the first indication information is used to indicate that the first UE supports the provision of adaptation layer relay services for communication between the terminal device and the first RAN device, it comprises :
    所述接收模块用于从所述第一UE接收所述第一指示信息，所述第一指示信息根据第一信息和第二信息确定，所述第一信息用于指示所述第一RAN设备支持适配层通信，所述第二信息用于指示所述第一UE支持适配层通信。The receiving module is configured to receive the first indication information from the first UE, the first indication information is determined according to the first information and the second information, and the first information is used to indicate the first RAN device The adaptation layer communication is supported, and the second information is used to indicate that the first UE supports adaptation layer communication.
  17. 根据权利要求15所述的终端设备，其特征在于，当所述第一指示信息用于指示第一RAN设备支持适配层通信时，包括：The terminal device according to claim 15, wherein when the first indication information is used to indicate that the first RAN device supports adaptation layer communication, it comprises:
    所述接收模块用于通过所述第一UE从所述第一RAN设备接收所述第一指示信息。The receiving module is configured to receive the first indication information from the first RAN device through the first UE.
  18. 一种终端设备，其特征在于，包括：A terminal device, characterized in that it comprises:
    接收模块，用于从第一无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述第一RAN设备是否支持适配层通信；A receiving module, configured to receive first information from a first radio access network RAN device, where the first information is used to indicate whether the first RAN device supports adaptation layer communication;
    处理模块，若所述第一信息用于指示所述第一RAN设备支持适配层通信，用于根据所述第一信息确定驻留在所述第一RAN设备服务的小区；或者，The processing module, if the first information is used to indicate that the first RAN device supports adaptation layer communication, it is used to determine, according to the first information, the cell served by the first RAN device; or,
    处理模块，若所述第一信息用于指示所述第一RAN设备不支持适配层通信，用于根据所述第一信息确定重选小区。The processing module, if the first information is used to indicate that the first RAN device does not support adaptation layer communication, is used to determine a reselection cell according to the first information.
  19. 根据权利要求18所述的装置，其特征在于，包括：The device according to claim 18, characterized in that it comprises:
    所述处理模块还用于确定所述终端设备支持适配层通信；或者，The processing module is further configured to determine that the terminal device supports adaptation layer communication; or,
    所述接收模块还用于从第二RAN设备接收第二信息，所述第二信息用于指示所述终端设备被授权执行中继通信，所述第二RAN设备为在所述UE接入所述第一RAN设备之前为所述终端设备服务的RAN设备；或者，The receiving module is further configured to receive second information from a second RAN device, the second information is used to indicate that the terminal device is authorized to perform relay communication, and the second RAN device The RAN device that served the terminal device before the first RAN device; or,
    所述接收模块还用于从所述第一RAN设备接收第三信息，所述第三信息用于指示所述终端设备被授权执行中继通信。The receiving module is further configured to receive third information from the first RAN device, and the third information is used to indicate that the terminal device is authorized to perform relay communication.
  20. 一种基于中继的通信装置，其特征在于，包括：A relay-based communication device, characterized in that it comprises:
    接收模块，用于从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；A receiving module, configured to receive first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    处理模块，用于根据所述第一信息和所述UE的签约信息确定第二信息，所述第二信息用于指示所述UE被授权在所述RAN设备服务的小区中驻留时执行中继通信，所述签约信息用于指示所述UE被授权执行中继通信；The processing module is configured to determine second information according to the first information and the subscription information of the UE, and the second information is used to indicate that the UE is authorized to camp in the cell served by the RAN device. After communication, the subscription information is used to indicate that the UE is authorized to perform relay communication;
    发送模块，用于向所述UE发送所述第二信息。The sending module is configured to send the second information to the UE.
  21. 一种基于中继的通信装置，其特征在于，包括：A relay-based communication device, characterized in that it comprises:
    接收模块，用于从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；A receiving module, configured to receive first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    所述接收模块，还用于从UE接收第二信息，所述第二信息用于指示所述UE支持适配层通信；The receiving module is further configured to receive second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication;
    发送模块，用于根据所述第二信息向策略控制功能PCF网元发送所述第一信息。The sending module is configured to send the first information to the policy control function PCF network element according to the second information.
  22. 根据权利要求21所述的装置，其特征在于，所述第二信息为设备到设备D2D能力信息。The apparatus according to claim 21, wherein the second information is device-to-device D2D capability information.
  23. 一种基于中继的通信装置，其特征在于，包括：A relay-based communication device, characterized in that it comprises:
    接收模块，用于从无线接入网络RAN设备接收第一信息，所述第一信息用于指示所述RAN设备支持适配层通信；A receiving module, configured to receive first information from a radio access network RAN device, where the first information is used to indicate that the RAN device supports adaptation layer communication;
    处理模块，用于确定所述RAN支持适配层通信；A processing module, configured to determine that the RAN supports adaptation layer communication;
    发送模块，用于向所述UE发送所述第一信息。The sending module is configured to send the first information to the UE.
  24. 根据权利要求23所述的装置，其特征在于，还包括：The device according to claim 23, further comprising:
    所述接收模块还用于从所述UE接收第二信息，所述第二信息用于指示所述UE支持适配层通信；The receiving module is further configured to receive second information from the UE, where the second information is used to indicate that the UE supports adaptation layer communication;
    所述发送模块还用于根据所述第二信息向所述UE发送所述第一信息。The sending module is further configured to send the first information to the UE according to the second information.
  25. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-12任意一项所述的方法。A computer-readable storage medium, comprising instructions, which when run on a computer, causes the computer to execute the method according to any one of claims 1-12.
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