Parameter configuration method, device, system, equipment and storage medium

Abstract

The present application provides a parameter configuration method, apparatus, system, equipment and storage medium, and relates to the field of communication technology. The method comprises: the core network sends parameter configuration information to the relay terminal device, wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started. The present application ensures the service transmission quality between the relay terminal device and the remote terminal device. In addition, the present application does not limit which functional entity in the core network sends the parameter configuration information to the relay terminal device. Therefore, in the actual application process, the sending entity of the parameter configuration information can be flexibly set according to the known information interaction architecture. On the one hand, it is consistent with the known information interaction architecture and improves the compatibility and efficiency of the parameter configuration. On the other hand, it improves the flexibility of the parameter configuration.

Description

[0001] This application is a divisional application of the PCT national phase application with a filing date of November 4, 2020 and national application number 202080083017.1. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and in particular to a parameter configuration method, apparatus, system, device and storage medium. Background Art

[0003] 3GPP (3rd Generation Partnership Project) introduced the concept of relay communication in the R13 (Release 13) ProSe (Proximity Service) architecture.

[0004] Relay communication refers to UE (User Equipment, terminal equipment)-to-Network (terminal equipment connected to the network) based on IP (Internet Protocol) layer relay. That is, Remote UE (remote terminal equipment) accesses the network through Relay UE (relay terminal equipment). Among them, Relay UE assumes the function of IP layer relay, transmits data between Remote UE and the network to establish a communication connection between Remote UE and the network. In order to ensure the quality of service transmission, the relevant technology introduces the Quality of Service (QoS) architecture to support different services corresponding to different QoS requirements. For non-relay communication, the terminal device directly establishes a connection with the network, and the network can regulate the transmission of different services between the terminal device and the network according to different QoS parameters. However, for relay communication, the network can regulate the transmission of different services between relay terminal devices directly connected to the network according to different QoS parameters, but cannot regulate the transmission of different services between remote terminal devices and relay terminal devices, and thus cannot guarantee the service transmission quality between remote terminal devices and relay terminal devices.

[0005] Therefore, for relay communication, how to configure QoS parameters between remote terminal devices and relay terminal devices requires further discussion and research. Summary of the invention

[0006] The embodiments of the present application provide a parameter configuration method, apparatus, system, device and storage medium. The technical solution is as follows:

[0007] On the one hand, an embodiment of the present application provides a parameter configuration method, which is applied to a relay terminal device, and the method includes:

[0008] Receive parameter configuration information from the core network;

[0009] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0010] On the other hand, an embodiment of the present application provides a parameter configuration method, which is applied in a core network, and the method includes:

[0011] Send parameter configuration information to the relay terminal device;

[0012] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0013] On the other hand, an embodiment of the present application provides a parameter configuration device, which is provided in a relay terminal device, and the device includes:

[0014] A configuration information receiving module, used to receive parameter configuration information from the core network;

[0015] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0016] In another aspect, an embodiment of the present application provides a parameter configuration system, wherein the parameter configuration system is used to:

[0017] Send parameter configuration information to the relay terminal device;

[0018] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0019] In another aspect, an embodiment of the present application provides a relay terminal device, the relay terminal device comprising: a processor, and a transceiver connected to the processor; wherein:

[0020] The transceiver is used to receive parameter configuration information from the core network;

[0021] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0022] In another aspect, an embodiment of the present application provides a core network device, the core network device comprising: a processor, and a transceiver connected to the processor; wherein:

[0023] The transceiver is used to send parameter configuration information to the relay terminal device;

[0024] The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0025] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a relay terminal device to implement the parameter configuration method on the relay terminal device side as described above.

[0026] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a core network device to implement the parameter configuration method on the core network side as described above.

[0027] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a relay terminal device, it is used to implement the parameter configuration method on the relay terminal device side as described above.

[0028] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a core network device, it is used to implement the parameter configuration method on the core network side as described above.

[0029] On the other hand, an embodiment of the present application provides a computer program product, which, when executed on a relay terminal device, is used to implement the parameter configuration method on the relay terminal device side as described above.

[0030] On the other hand, an embodiment of the present application provides a computer program product, which, when the computer program product runs on a core network device, is used to implement the parameter configuration method on the core network side as described above.

[0031] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0032] When the core network determines to start the reverse mapping QoS parameter mechanism, the core network sends parameter configuration information to the relay terminal device to configure the QoS parameters between the relay terminal device and the remote terminal device, thereby solving the defect that the relay terminal device cannot obtain the QoS parameters when the core network starts the reverse mapping QoS parameters in the relay communication system, and ensuring the service transmission quality between the relay terminal device and the remote terminal device. In addition, in the embodiment of the present application, it is not limited which functional entity in the core network sends the parameter configuration information to the relay terminal device, so that in the actual application process, the sending entity of the parameter configuration information can be flexibly set according to the known information interaction architecture, which is consistent with the known information interaction architecture on the one hand, and improves the compatibility and efficiency of the parameter configuration, and on the other hand, improves the flexibility of the parameter configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

[0035] Figure 2 is a schematic diagram of a 5GS system architecture provided by an embodiment of the present application;

[0036] Figure 3 is a schematic diagram of a 5GS system architecture provided by another embodiment of the present application;

[0037] Figure 4 is a schematic diagram of a relay communication system provided by an embodiment of the present application;

[0038] Figure 5 is a flow chart of a parameter configuration method provided by an embodiment of the present application;

[0039] Figure 6 is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0040] Figure 7 is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0041] Figure 8 is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0042] Fig. 9is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0043] Fig.10 is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0044] Fig.11 is a flow chart of a parameter configuration method provided by another embodiment of the present application;

[0045] Fig.12 is a block diagram of a parameter configuration device provided by an embodiment of the present application;

[0046] Fig.13 is a block diagram of a parameter configuration device provided by another embodiment of the present application;

[0047] Fig.14 is a block diagram of a parameter configuration system provided by an embodiment of the present application;

[0048] Fig.15 is a structural block diagram of a relay terminal device provided by an embodiment of the present application;

[0049] Fig.16 It is a structural block diagram of a core network device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0051] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0052] The technical solution provided in the embodiments of the present application can be applied to various communication systems, for example: GSM (Global System of Mobile Communication) system, CDMA (Code Division Multiple Access) system, WCDMA (Wideband Code Division Multiple Access) system, GPRS (General Packet Radio Service), LTE (Long Term Evolution) system, FDD (Frequency Division Duplex) system, TDD (Time Division Duplex) system, UMTS (Universal Mobile Telecommunication System), WiMAX (Worldwide Interoperability for Microwave Access) communication system, 5GS (5th-Generation System) or New Radio (NR) system, or other subsequent evolution systems.

[0053] Please refer to Figure 1 , which shows a schematic diagram of the system architecture of a communication system provided by an embodiment of the present application. Figure 1 As shown, the system architecture 100 may include: a terminal device 10 , an access network device 20 and a core network device 30 .

[0054] The terminal device 10 may refer to a UE, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent or a user device. Optionally, the terminal device may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5GS or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto.

[0055] The access network device 20 is a device deployed in the access network to provide wireless communication functions for terminal devices. The access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different. For example, in 5GS, they are called gNodeB or gNB. With the evolution of communication technology, the name "access network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for terminal devices are collectively referred to as access network devices.

[0056] The core network device 30 refers to a device that can provide session management, mobility relations, policy management, security authentication and other functions for the terminal device. In the embodiment of the present application, the core network device 30 may include a first core network device, a second core network device and a third core network device, wherein the first core network device is responsible for the session management of the terminal device; the second core network device is responsible for forwarding user data packets according to the routing rules of the first core network device; and the third core network device is responsible for user policy management. Exemplarily, in the 5GS system, the first core network can be implemented as SMF (Session Management Function), the second core network device can be implemented as UPF (User Plane Function), and the third core network device can be implemented as PCF (Policy Control Function).

[0057] In one example, if Figure 1 As shown, the terminal device includes a remote terminal device 12 and a relay terminal device 14. The relay terminal device 14 can perform data transmission with the remote terminal device 12 to establish a communication connection between the remote terminal device 12 and a network device, which includes an access network device 20 and / or a core network device 30.

[0058] Figure 2 FIG. 5 is a schematic diagram showing the system architecture of the 5GS provided in the embodiment of the present application. Figure 2 As shown, the system architecture 200 may include: UE, (R)AN ((Radio) Access Network), Core (core network) and DN (data network). Among them, UE, AN, Core are the main components of the architecture, and they can be logically divided into two parts: user plane and control plane. The control plane is responsible for the management of the mobile network, and the user plane is responsible for the transmission of service data. Figure 2In the RAN, the NG2 reference point is located between the RAN control plane and the Core control plane, the NG3 reference point is located between the RAN user plane and the Core user plane, and the NG6 reference point is located between the Core user plane and the data network.

[0059] UE: It is the entry point for mobile users to interact with the network. It can provide basic computing and storage capabilities, display service windows to users, and accept user operation input. UE will use the next generation air interface technology to establish signal and data connections with RAN, thereby transmitting control signals and service data to the mobile network.

[0060] (R)AN: Similar to the base station in the traditional network, it is deployed close to the UE, provides network access for authorized users in a specific area, and can use transmission tunnels of different qualities to transmit user data according to the user level and business requirements. RAN can manage its own resources, use them reasonably, provide access services to UE on demand, and forward control signals and user data between UE and the core network.

[0061] Core: Responsible for maintaining the subscription data of the mobile network, managing the network elements of the mobile network, and providing the UE with functions such as session management, mobility management, policy management, and security authentication. When the UE is attached, it provides the UE with network access authentication; when the UE has a service request, it allocates network resources to the UE; when the UE moves, it updates the network resources for the UE; when the UE is idle, it provides the UE with a fast recovery mechanism; when the UE is detached, it releases network resources for the UE; when the UE has service data, it provides the UE with data routing functions, such as forwarding uplink data to the DN; or receiving UE downlink data from the DN, forwarding it to the RAN, and then sending it to the UE.

[0062] DN: It is a data network that provides business services to users. Generally, the client is located in the UE and the server is located in the data network. The data network can be a private network, such as a local area network, or an external network that is not controlled by the operator, such as the Internet, or a proprietary network jointly deployed by operators, such as for configuring IMS (IP Multimedia Core Network Subsystem) services.

[0063] Figure 3 is Figure 2The detailed architecture is determined based on the core network user plane, including UPF; the core network control plane includes AUSF (Authentication Server Function), AMF (Core Access and Mobility Management Function), SMF, UDM (Unified Data Management), PCF, AF (Application Function). The functions of these functional entities are as follows:

[0064] UPF: performs user data packet forwarding according to the routing rules of SMF;

[0065] AUSF: performs security authentication of UE;

[0066] AMF: UE access management and mobility management;

[0067] SMF: UE session management;

[0068] UDM: User contract context management;

[0069] PCF: User Policy Management;

[0070] AF: User application management.

[0071] exist Figure 3 In the architecture shown, the Uu interface is the reference point between the UE and the AN, and is used for exchanging access layer messages and wireless data transmission; the N1 interface is the reference point between the UE and the AMF; the N2 interface is the reference point between the RAN and the AMF, and is used for sending NAS messages, etc.; the N3 interface is the reference point between the RAN and the UPF, and is used for transmitting user plane data, etc.; the N4 interface is the reference point between the SMF and the UPF, and is used for transmitting information such as tunnel identification information of the N3 connection, data cache indication information, and downlink data notification messages; the N6 interface is the reference point between the UPF and the DN, and is used for transmitting user plane data, etc.

[0072] It should be noted that Figure 2 and Figure 3 The interface name between the various network elements is only an example. The name of the interface in a specific implementation may be other names, and the embodiments of the present application do not specifically limit this. Figure 2 and Figure 3The names of the various network elements (such as SMF, AF, UPF, etc.) included in are only examples and do not limit the functions of the network elements themselves. In 5GS and other future networks, the above-mentioned network elements may also have other names, and the embodiments of the present application do not specifically limit this. For example, in a 6G network, some or all of the above-mentioned network elements may use the terminology in 5G, or may use other names, etc., which are uniformly explained here and will not be repeated below. In addition, it should be understood that the name of the message (or signaling) transmitted between the above-mentioned network elements is only an example and does not constitute any limitation on the function of the message itself.

[0073] After the terminal device accesses the network, the SMF located in the core network sends the QoS rules to the terminal device through control signaling. The terminal device uses the QoS rules to match the uplink service data and maps the uplink service data to the appropriate QoS flow for QoS control. Considering the support of multiple new services in the 5G network, the QoS parameters configured for the terminal device may be complex in structure and updated frequently. For this reason, an optional reverse mapping QoS parameter mechanism is introduced in the 5G network. The main idea of ​​the reverse mapping QoS parameter mechanism is to add the QoS flow identifier QFI and the reverse mapping indication to the downlink data packet header. The terminal device determines the QoS rules based on the received downlink data packet for the transmission of uplink data, thereby reducing the signaling interaction between the SMF and the terminal device.

[0074] In the embodiment of the present application, when a terminal device has the ability to connect to an external data network through a 5G network and also has ProSe (Proximity-based Services) capability, this terminal device can act as a relay terminal device, and another terminal device with ProSe capability can act as a remote terminal device. A terminal device with ProSe capability can communicate directly with another terminal device with ProSe capability through a PC5 interface. Figure 4 As shown, the remote terminal device can establish a direct connection with the relay terminal device through the PC5 interface, and interact with the external network through the PDU session established between the relay terminal device and the network.

[0075] In one example, the core network sends the QoS parameters (also called PC5 QoS parameters) between the relay terminal device and the remote terminal device to the relay terminal device through a control plane message, or sends the QoS parameters (also called Uu QoS parameters) between the network device and the relay terminal device to the relay terminal device, and the network device includes the core network device and / or the access network device. Thus, when the relay terminal device receives the QoS parameters between the relay terminal device and the remote terminal device, the QoS parameters can be directly used to regulate the service transmission between the relay terminal device and the remote terminal device; when the relay terminal device receives the QoS parameters between the network device and the relay terminal device, the QoS parameters between the relay terminal device and the remote terminal device can be further determined according to the QoS parameters between the network device and the relay terminal device, and the determined QoS parameters are subsequently used to regulate the service transmission between the remote terminal device and the remote terminal device.

[0076] However, for relay communications, if the SMF in the core network starts the reverse mapping QoS parameter mechanism, the relay terminal device will no longer interact with the SMF in signaling, and the relay terminal device will not be able to obtain the QoS parameters. Therefore, although the header of the downlink data packet sent by the UPF in the core network to the relay terminal device carries the QFI, the relay terminal device cannot determine the QoS parameters corresponding to the QFI, and thus cannot guarantee the service transmission quality between the remote terminal device and the relay terminal device.

[0077] Based on this, an embodiment of the present application provides a parameter configuration method, by sending parameter configuration information to a relay terminal device when the core network determines to start a reverse mapping QoS parameter mechanism, and the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device. In an embodiment of the present application, the core network can send the parameter configuration information to the relay terminal device through a control plane message, or through a user plane message, and when different sending methods are used, the content of the parameter configuration information may also be different.

[0078] The technical solution of the present application is introduced and explained below through several embodiments.

[0079] Please refer to Figure 5 , which shows a flow chart of a parameter configuration method provided by an embodiment of the present application, which can be applied to the above Figure 1 or Figure 4 In the communication system shown in FIG. 1 , the method may include the following steps:

[0080] Step 510: The core network sends parameter configuration information to the relay terminal device, wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0081] The QoS parameters between the relay terminal device and the remote terminal device, which can also be called PC5 QoS parameters, are used to ensure the service transmission quality between the relay terminal device and the remote terminal device. In the embodiment of the present application, when the core network determines that the reverse mapping QoS parameter mechanism needs to be started, it sends parameter configuration information to the relay terminal device to configure the QoS parameters between the relay terminal device and the remote terminal device.

[0082] The embodiments of the present application do not limit the timing and manner in which the core network sends parameter configuration information to the relay terminal device. In one example, the core network sends parameter configuration information to the relay terminal device before determining to start the reverse mapping QoS mechanism and starting the reverse mapping QoS parameter mechanism, so that the parameter configuration information is sent by the core network to the relay terminal device through a control plane message, that is, the control plane functional entity in the core network sends the parameter configuration information to the relay terminal device. In another example, the core network sends parameter configuration information to the relay terminal device when determining to start the reverse mapping QoS mechanism, and during the process of starting the reverse mapping QoS parameter mechanism or after starting the reverse mapping QoS parameter mechanism, so that the parameter configuration information is sent by the core network to the relay terminal device through a user plane message, that is, the user plane functional entity in the core network sends the parameter configuration information to the relay terminal device.

[0083] As can be seen from the above description, the sending entity of the parameter configuration information is different for the core network to send parameter configuration information to the relay terminal device at different times. As an example, at a certain time, the sending entity of the parameter configuration information coincides with the core network function entity that interacts with the relay terminal device at that time in the existing information interaction architecture.

[0084] For example, in the existing information interaction architecture, before the reverse mapping QoS parameter mechanism is started, the control plane function entity in the core network interacts with the relay terminal device, so that before the reverse mapping QoS parameter mechanism is started, the control plane function entity serves as the entity that sends the parameter configuration information. For another example, in the existing information interaction architecture, during or after the reverse mapping QoS parameter mechanism is started, the user plane function entity in the core network interacts with the relay terminal device, so that during or after the reverse mapping QoS parameter mechanism is started, the user plane function entity serves as the entity that sends the parameter configuration information.

[0085] By setting the sending entity of parameter configuration information that is consistent with the existing information interaction architecture at different times, it is possible to avoid excessive and cumbersome modifications to the existing information interaction architecture, thereby improving the compatibility of QoS parameter configuration when starting reverse mapping of QoS parameters. In addition, it also avoids the relay terminal device from interacting with too many different functional entities at the same time, which helps to improve the efficiency of QoS parameter configuration.

[0086] Optionally, the content of parameter configuration information sent by different functional entities in the core network to the relay terminal device may be different. Exemplarily, the parameter configuration information sent by the control plane functional entity to the relay terminal device includes QoS parameters, and the parameter configuration information sent by the user plane functional entity to the relay terminal device includes QFI. Although the content of the parameter configuration information is different, in the embodiment of the present application, the relay terminal device can determine the QoS parameters between the relay terminal device and the remote terminal device based on the received parameter configuration information. For an introduction to the content of the parameter configuration information and how the relay terminal device determines the QoS parameters, please refer to the following embodiments, which will not be elaborated here.

[0087] In summary, the technical solution provided by the embodiment of the present application, when the core network determines to start the reverse mapping QoS parameter mechanism, the core network sends parameter configuration information to the relay terminal device to configure the QoS parameters between the relay terminal device and the remote terminal device, thereby solving the defect that the relay terminal device cannot obtain the QoS parameters when the core network starts the reverse mapping QoS parameters in the relay communication system, and ensuring the service transmission quality between the relay terminal device and the remote terminal device. In addition, in the embodiment of the present application, it is not limited which functional entity in the core network sends the parameter configuration information to the relay terminal device, so that in the actual application process, the sending entity of the parameter configuration information can be flexibly set according to the known information interaction architecture, which is consistent with the known information interaction architecture on the one hand, and improves the compatibility and efficiency of the parameter configuration, and on the other hand, improves the flexibility of the parameter configuration.

[0088] In an example, the parameter configuration information includes the QFI bound to the PCC rule and the QoS parameters corresponding to the QFI.

[0089] PCC (Policy and Charging Control) rules are rules related to user policy management, in which PCC rules specify requirements related to QoS flows. It can be seen from the above description that during or after the reverse mapping QoS parameter mechanism is started, the relay terminal device determines the QoS parameters between the remote terminal device and the remote terminal device based on the QFI and reverse mapping indication carried by the header of the downlink data packet. Therefore, a corresponding relationship between the QFI and the QoS parameters can be established to facilitate the subsequent relay terminal device to determine the corresponding QoS parameters based on the QFI carried by the header of the downlink data packet.

[0090] Based on this, the parameter configuration information sent by the core network to the relay terminal device includes the QFI bound to the PCC rule and the QoS parameters corresponding to the QFI. Optionally, the QoS parameters corresponding to the QFI include at least one of the following: the QoS parameters between the relay terminal device and the remote terminal device, and the QoS parameters between the relay terminal device and the network device. Among them, the embodiment of the present application does not limit the type of network device, and the network device can be an access network device, such as a base station, etc.; it can also be a core network device, such as a UPF, etc.

[0091] Since the QoS parameters are configured by the control plane functional entity in the core network, when the parameter configuration information includes the QoS parameters, the control plane functional entity can send the parameter configuration information to the relay terminal device. Optionally, the core network includes a first core network device, and the first core network device is used to provide a control plane function, that is, the first core network device is a control plane functional entity. For example, the first core network device is implemented as the SMF introduced in the above embodiment. Therefore, the parameter configuration information is carried in the control plane message interacted between the first core network device and the relay terminal device.

[0092] In the embodiment of the present application, the QoS parameters in the parameter configuration information correspond to the QFI bound to the PCC rule, so the first core network device needs to determine the QFI bound to the PCC rule. Based on this, the above core network also includes a third core network device, which is used to provide a control plane function, that is, the third core network device is also a control plane function entity. For example, the third core network device is implemented as the PCF introduced in the above embodiment. Figure 6 As shown, the above step 510 includes the following steps:

[0093] Step 512: The third core network device sends a PCC rule to the first core network device. The PCC rule includes first mapping indication information. The first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism.

[0094] The third core network device is used for user policy management, and thus, the PCC rule is generated by the third core network device. After generating the PCC rule, the third core network device may send the PCC rule to the first core network device. Optionally, the third core network device may also determine whether to start the reverse mapping QoS parameter mechanism, and inform the first core network device of the determination result. In order to reduce the signaling exchanges between the third core network device and the first core network device, the third core network device may carry the first mapping indication information in the PCC rule to indicate to the first core network device whether to start the reverse mapping QoS parameter mechanism.

[0095] Step 514: The first core network device determines a configuration status corresponding to the PCC rule.

[0096] After receiving the PCC rule, the first core network device can determine the QoS flow bound to the PCC rule, and then determine the QoS flow identifier QFI as the QFI bound to the PCC rule, and then configure parameter configuration information according to the QFI bound to the PCC rule.

[0097] In addition, since the embodiment of the present application sends parameter configuration information to the relay terminal device during the relay communication process, the first core network device also needs to determine whether the configuration corresponding to the PCC rule is in a relay state. If the configuration corresponding to the PCC rule is in a non-relay state, the first core network device does not need to configure parameter configuration information for the terminal device. Optionally, the configuration corresponding to the PCC rule includes at least one of the following: a terminal device corresponding to the PCC rule, a PDU (Protocol Data Unit) session corresponding to the PCC rule, and an SDF (Service Data Flow) corresponding to the PCC rule.

[0098] Step 516: When the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state, the first core network device sends parameter configuration information to the relay terminal device.

[0099] When the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism, and the configuration corresponding to the PCC rule is in the relay state, the first core network device determines that the parameter configuration information needs to be configured for the relay terminal device. After the first core network device determines the parameter configuration information according to the QFI bound to the PCC rule, before starting the reverse mapping QoS parameter mechanism, the first core network device sends the parameter configuration information to the relay terminal device.

[0100] During or after the initiation of the reverse mapping QoS parameter mechanism, the control plane functional entity in the core network no longer exchanges signals with the relay terminal device, but the user plane functional entity in the core network exchanges signals with the relay terminal device. Therefore, in an embodiment of the present application, the core network also includes a second core network device, which is used to provide user plane functions, that is, the second core network device is a user plane functional entity. For example, the second core network device is the UPF introduced in the above embodiment. Based on this, Figure 6 As shown, the above method also includes the following steps:

[0101] Step 522: The second core network device sends a downlink data packet to the relay terminal device.

[0102] The second core network device can relay the terminal device to send a downlink data packet, and the downlink data packet carries the QFI. Optionally, the QFI is carried by the header of the downlink data packet.

[0103] Step 524: The relay terminal device determines the QFI carried by the downlink data packet.

[0104] After receiving the downlink data packet, the relay terminal device may parse the downlink data packet to obtain the QFI carried by the downlink data packet.

[0105] Step 526: The relay terminal device determines the QoS parameters between the relay terminal device and the remote terminal device based on the parameter configuration information and the QFI carried by the downlink data packet.

[0106] On the one hand, the relay terminal device clarifies the correspondence between QFI and QoS parameters based on the parameter configuration information sent by the first core network device; on the other hand, the relay terminal device parses the QFI based on the downlink data packet sent by the second core network device. Therefore, the relay terminal device can determine the QoS parameters corresponding to the QFI carried by the downlink service data packet according to the correspondence between QFI and QoS parameters, and further determine the QoS parameters between the relay terminal device and the remote terminal device.

[0107] As can be seen from the above introduction, in the parameter configuration information sent by the first core network device, the QoS parameters corresponding to the QFI may be the QoS parameters between the relay terminal device and the remote terminal device, or may be the QoS parameters between the relay terminal device and the network device. The QoS parameters corresponding to the QFI include the QoS parameters between the relay terminal device and the remote terminal device, and the relay terminal device directly determines the QoS parameters between the relay terminal device and the remote terminal device, that is, the above step 526 includes: the relay terminal device uses the QoS parameters corresponding to the QFI carried by the header of the downlink data packet as the QoS parameters between the relay terminal device and the remote terminal device. The QoS parameters corresponding to the QFI include the QoS parameters between the relay terminal device and the network device, and the relay terminal device indirectly determines the QoS parameters between the remote terminal device, that is, the above step 526 includes: the relay terminal device uses the QoS parameters corresponding to the QFI carried by the header of the downlink data packet as the QoS parameters between the relay terminal device and the network device; based on the QoS parameters between the relay terminal device and the network device, the QoS parameters between the relay terminal device and the remote terminal device are determined.

[0108] To summarize, the technical solution provided by the embodiment of the present application is that before the core network starts the reverse mapping QoS parameter mechanism, the control plane function entity in the core network sends parameter configuration information to the relay terminal device, and the parameter configuration information includes QFI and QoS parameters corresponding to the QFI, so that the subsequent relay terminal device can determine the QoS parameters between the remote terminal device and the remote terminal device based on the QFI carried by the received downlink data packet, thereby effectively ensuring the service transmission quality between the relay terminal device and the remote terminal device.

[0109] In an example, the parameter configuration information includes a QFI bound to the PCC rule; wherein the QFI bound to the PCC rule is equal to a system QoS identifier.

[0110] The system QoS identifier is the most important part of the QoS parameters between the terminal device and the network device. Under normal circumstances, if the system QoS identifier is clarified, the QoS parameters between the terminal device and the network device are also clarified. In addition, for relay communication, the QoS parameters between the relay terminal device and the network device can establish a corresponding relationship with the QoS parameters between the relay terminal device and the remote terminal device, so that the relay terminal device clarifies the QoS parameters between the relay terminal device and the network device, and can further clarify the QoS parameters between the relay terminal device and the remote terminal device. Therefore, if the QFI bound to the PCC rule is equal to the system QoS identifier, then the relay terminal device clarifies the QFI bound to the PCC rule, and also clarifies the QoS parameters between the relay terminal device and the network device, so that the QoS parameters between the relay terminal device and the remote terminal device can be further clarified.

[0111] Based on this, when the QFI bound to the PCC rule is equal to the system QoS identifier, the parameter configuration information sent by the core network to the relay terminal device includes the QFI bound to the PCC rule. Optionally, the system QoS identifier includes 5QI (5G QoS Identifier, fifth generation mobile communication system QoS identifier).

[0112] After the reverse mapping QoS parameter mechanism is started, the user plane message is exchanged between the core network and the relay terminal device, and the message carries the QFI. Based on this, the core network includes a second core network device, and the second core network device is used to provide user plane functions, that is, the second core network device is a user plane functional entity. For example, the second core network device is the UPF introduced in the above embodiment. Therefore, the parameter configuration information is carried in the user plane message exchanged between the second core network device and the relay terminal device. Optionally, the user plane message includes a downlink data packet, and the parameter configuration information is carried in the packet header of the downlink data packet.

[0113] In the embodiment of the present application, the QFI bound by the PCC rule is sent by the control plane function entity in the core network to the user plane function entity. Based on this, the core network also includes a first core network device and a third core network device, and the first core network device and the third core network device are used to provide control plane functions, that is, the first core network device and the third core network device are control plane function entities. For example, the first core network device is the SMF introduced in the above embodiment, and the third core network device is the PCF introduced in the above embodiment.

[0114] In addition, in the embodiment of the present application, the first core network device may determine whether to start the reverse mapping QoS parameter mechanism, or the third core network device may determine whether to start the reverse mapping QoS parameter mechanism.

[0115] In one example, if Figure 7 As shown, the above step 510 includes the following steps:

[0116] Step 51A: The third core network device sends a PCC rule to the first core network device. The PCC rule includes first mapping indication information. The first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism.

[0117] For the description of step 51A, please refer to the description of step 512 above, which will not be repeated here.

[0118] Step 51C, the first core network device sends second mapping indication information and the QFI bound to the PCC rule to the second core network device when the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism, the configuration corresponding to the PCC rule is in a relay state, and the QFI bound to the PCC rule can be equal to the system QoS identifier, and the second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0119] In an embodiment of the present application, after receiving the PCC rule, the first core network device determines whether to start the reverse mapping QoS parameter mechanism. It can be seen from the above description that when the QFI bound to the PCC rule is equal to the system QoS identifier, the relay terminal device can determine the QoS parameters according to the QFI bound to the PCC rule. Therefore, the first core network device determines whether to start the reverse mapping QoS parameter mechanism according to whether the QFI bound to the PCC rule can be equal to the system QoS parameter.

[0120] In addition, as described in the above step 514, since the embodiment of the present application sends parameter configuration information to the relay terminal device during the relay communication process, the first core network device can also determine whether the configuration corresponding to the PCC rule is in a relay state. If the configuration corresponding to the PCC rule is in a non-relay state, the first core network device does not need to configure parameter configuration information for the terminal device. Optionally, the configuration corresponding to the PCC rule includes at least one of the following: a terminal device corresponding to the PCC rule, a PDU session corresponding to the PCC rule, and an SDF corresponding to the PCC rule.

[0121] Based on this, when the first mapping information received by the first core network device is used to indicate the start of the reverse mapping QoS parameter mechanism, the configuration corresponding to the PCC rule is in the relay state, and the QFI bound to the PCC rule can be equal to the system QoS identifier, the first core network device determines to start the reverse mapping QoS parameter mechanism, and sends the second mapping indication information and the QFI bound to the PCC rule to the second core network device to inform the second core network device to start the reverse mapping QoS parameter mechanism. In addition, in an embodiment of the present application, when the above three conditions are not met at the same time, the first core network device determines not to start the reverse mapping QoS parameter mechanism.

[0122] Step 51E: The second core network device sends parameter configuration information to the relay terminal device.

[0123] The second core network device receives the second mapping indication information and the QFI bound to the PCC rule, and when determining to start the reverse mapping QoS parameter mechanism, determines the parameter configuration information according to the QFI bound to the PCC rule. Optionally, the second core network device sets the QFI bound to the PCC rule in the header of the downlink data packet, that is, the parameter configuration information is carried in the header of the downlink data packet. Thus, after receiving the downlink data packet, the relay terminal device can parse and obtain the QFI bound to the PCC rule.

[0124] It is precisely because the condition that the QFI bound to the PCC rule is equal to the system QoS identifier that the relay terminal device can clarify the QoS parameters between the relay terminal device and the remote terminal device based on the QFI bound to the PCC rule. Therefore, the first core network device also needs to set the QFI bound to the PCC rule as the system QoS identifier. Based on this, optionally, Figure 7 As shown, the above method also includes: when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, the first core network device sets the QFI bound to the PCC rule as the system QoS identifier.

[0125] In another example, Figure 7 As shown, the above step 510 includes the following steps:

[0126] Step 51B, when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, the third core network device sends the PCC rule to the first core network device, and the PCC rule includes first mapping indication information, and the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0127] It can be seen from the above introduction that when the QFI bound to the PCC rule is equal to the system QoS identifier, the relay terminal device can determine the QoS parameters according to the QFI bound to the PCC rule. Therefore, the third core network device can determine whether to start the reverse mapping QoS parameter mechanism according to whether the QFI bound to the PCC rule can be equal to the system QoS parameters. In addition, as described in the above step 514, since the embodiment of the present application sends parameter configuration information to the relay terminal device during the relay communication process, the third core network device can also determine whether the configuration corresponding to the PCC rule is in a relay state. If the configuration corresponding to the PCC rule is in a non-relay state, the third core network device does not need to determine whether the QFI bound to the PCC rule can be equal to the system QoS identifier. Optionally, the configuration corresponding to the PCC rule includes at least one of the following: a terminal device corresponding to the PCC rule, a PDU session corresponding to the PCC rule, and an SDF corresponding to the PCC rule.

[0128] Based on this, when the third core network device determines that the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, the third core network device determines to start the reverse mapping QoS parameter mechanism and sends the first mapping indication information to the first core network device to inform the first core network device to start the reverse mapping QoS parameter mechanism. In addition, in an embodiment of the present application, when the third core network device determines that the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule cannot be equal to the system QoS identifier, the first core network device determines not to start the reverse mapping QoS parameter mechanism.

[0129] Step 51D: The first core network device sends second mapping indication information and the QFI bound to the PCC rule to the second core network device, where the second mapping indication information is used to indicate the start of a reverse mapping QoS parameter mechanism.

[0130] When the first core network device receives the first mapping indication information and explicitly starts the reverse mapping QoS parameter mechanism, it sends the second mapping indication information and the QFI bound to the PCC rule to the second core network device to inform the second core network device to start the reverse mapping QoS parameter mechanism.

[0131] Step 51F: The second core network device sends parameter configuration information to the relay terminal device.

[0132] For the description of step 51F, please refer to the description of step 51E above, which will not be repeated here.

[0133] It can be seen from the above description that the first core network device also needs to set the QFI bound to the PCC rule as the system QoS identifier. In the embodiment of the present application, the first core network device can determine whether the QFI bound to the PCC rule needs to be set as the system QoS identifier, or the third core network device can inform the first core network device whether the QFI bound to the PCC rule needs to be set as the system QoS identifier. Based on this, in an example, Figure 7 As shown, the above method also includes: when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, the third core network device sends an identifier setting indication information to the first core network device; the first core network device sets the QFI bound to the PCC rule as the system QoS identifier according to the first identifier indication information. Optionally, the identifier setting indication information can be carried in the PCC rule or can be independent of the PCC rule, which is not limited in this embodiment of the present application. In another example, Figure 7 As shown, the above method also includes: when the configuration corresponding to the PCC rule is in a relay state, the first core network device sets the QFI bound to the PCC rule as the system QoS identifier.

[0134] After the relay terminal device has clarified the parameter configuration information, that is, the QFI bound to the PCC rule, it can determine the QoS parameters between the relay terminal device and the remote terminal device according to the QFI. Figure 7 As shown, the method further includes the following steps: Step 532, the relay terminal device determines the QoS parameters between the relay terminal device and the network device based on the parameter configuration information. Step 534, the relay terminal device determines the QoS parameters between the relay terminal device and the remote terminal device based on the QoS parameters between the relay terminal device and the network device.

[0135] In summary, the technical solution provided by the embodiment of the present application is that during or after the core network starts the reverse mapping QoS parameter mechanism, the user plane function entity in the core network sends parameter configuration information to the relay terminal device, and the parameter configuration information includes QFI, and the QFI is equal to the system QoS identifier. Since the relay terminal device clarifies the system QoS identifier, it also clarifies the QoS parameters between the network device, and further clarifies the QoS parameters between the relay terminal device and the remote terminal device based on the QoS parameters between the network device. Therefore, the relay terminal device can determine the QoS parameters between the relay terminal device and the remote terminal device based on the QFI equal to the system QoS identifier, which effectively guarantees the service transmission quality between the relay terminal device and the remote terminal device.

[0136] The technical solution of the present application is described below with several exemplary embodiments. It is assumed that the first core network device is SMF, the second core network device is UPF, the third core network device is PCF, the system QoS identifier is 5QI, and so on.

[0137] Please refer to Figure 8 , which shows a flow chart of a parameter configuration method provided by an embodiment of the present application, which can be applied to the above Figure 1 or Figure 4 In the communication system shown in FIG. 1 , the method may include the following steps:

[0138] Step 801: The PCF sends a PCC rule to the SMF, where the PCC rule includes first mapping indication information. The first mapping indication information is used to indicate starting a reverse mapping QoS parameter mechanism.

[0139] Step 802: SMF determines the QoS flow bound to the PCC rule. After SMF determines the QoS flow bound to the PCC rule, it can determine the QFI corresponding to the QoS flow as the QFI bound to the PCC rule.

[0140] Step 803: SMF determines the state of the UE or PDU session or SDF corresponding to the PCC rule. SMF needs to determine whether the UE or PDU session or SDF corresponding to the PCC rule is in a relay state.

[0141] Step 804: SMF sends the QFI bound to the PCC rule and the QoS parameters corresponding to the QFI to the Relay UE. The QoS parameters corresponding to the QFI can be Uu QoS parameters or PC5 QoS parameters.

[0142] Step 805: SMF sends second mapping indication information and the QFI bound to the PCC rule to UPF. The second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0143] Step 806: UPF sends a downlink data packet to the Relay UE. The downlink data packet carries the QFI and third mapping indication information, where the third mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0144] Step 807: The Relay UE determines the QFI carried by the downlink data packet.

[0145] Step 808: The Relay UE determines the PC5 QoS parameters based on the QFI carried by the downlink data packet, the QFI bound to the PCC rule, and the QoS parameters corresponding to the QFI.

[0146] In the above step 804, if the QoS parameters corresponding to the QFI obtained by the Relay UE are PC5 QoS parameters, then in step 808, the Relay UE directly uses the QoS parameters corresponding to the QFI carried by the downlink data packet as the PC5 QoS parameters; if the QoS parameters corresponding to the QFI obtained by the Relay UE are Uu QoS parameters, then in step 808, the Relay UE needs to further determine the PC5 QoS parameters based on the QoS parameters corresponding to the QFI carried by the downlink data packet.

[0147] Please refer to Fig. 9 , which shows a flow chart of a parameter configuration method provided by an embodiment of the present application, which can be applied to the above Figure 1 or Figure 4 In the communication system shown in FIG. 1 , the method may include the following steps:

[0148] Step 901, the PCF sends a PCC rule to the SMF, where the PCC rule includes first mapping indication information. The first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism. In the embodiment of the present application, the PCC rule may also include 5QI.

[0149] Step 902: SMF determines the state of the UE or PDU session or SDF corresponding to the PCC rule. SMF needs to determine whether the UE or PDU session or SDF corresponding to the PCC rule is in a relay state.

[0150] When the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism, the UE or PDU session or SDF corresponding to the PCC rule is in the relay state, and the 5QI can be set to the QFI bound to the PCC rule, the SMF determines to start the reverse mapping QoS mechanism, and then performs the following steps:

[0151] Step 903, SMF determines the QFI bound to the PCC rule and sets the QFI bound to the PCC rule to 5QI. SMF determines the QoS flow bound to the PCC rule, and can determine the QFI corresponding to the QoS flow, that is, the QFI bound to the PCC rule. At the same time, SMF sets the QFI bound to the PCC rule to 5QI, such as setting the value of the QFI bound to the PCC rule to the value of 5QI.

[0152] Step 904: SMF sends second mapping indication information and the QFI bound to the PCC rule to UPF. The second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0153] Step 905: UPF sends a downlink data packet to the Relay UE. The downlink data packet carries the QFI and third mapping indication information, where the third mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0154] Step 906: The Relay UE determines the QFI carried by the downlink data packet.

[0155] Step 907: The Relay UE determines the PC5 QoS parameters based on the QFI carried by the downlink data packet. Since the QFI carried by the downlink data packet sent by the SMF is equal to 5QI, the Relay UE can determine the Uu QoS based on the QFI carried by the downlink data packet, and further determine the PC5 QoS based on the Uu QoS.

[0156] Please refer to Fig.10 , which shows a flow chart of a parameter configuration method provided by an embodiment of the present application, which can be applied to the above Figure 1 or Figure 4 In the communication system shown in FIG. 1 , the method may include the following steps:

[0157] Step 1001: The PCF determines the state of the UE or PDU session or SDF corresponding to the PCC rule. The PCF needs to determine whether the UE or PDU session or SDF corresponding to the PCC rule is in a relay state.

[0158] When the UE or PDU session or SDF corresponding to the PCC rule is in the relay state and the 5QI can be set to the QFI bound to the PCC rule, the PCF determines to start the reverse mapping QoS mechanism and then executes the following steps.

[0159] Step 1002: PCF sends PCC rules and identification setting indication information to SMF, where the PCC rules include first mapping indication information. The first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism, and the identification setting indication information is used to indicate that the QFI bound to the PCC rules is set to 5QI. The PCC rules may also include 5QI.

[0160] Step 1003, SMF determines the QFI bound to the PCC rule and sets the QFI bound to the PCC rule to 5QI. SMF determines the QoS flow bound to the PCC rule, and can determine the QFI corresponding to the QoS flow, that is, the QFI bound to the PCC rule. At the same time, SMF sets the QFI bound to the PCC rule to 5QI, such as setting the value of the QFI bound to the PCC rule to the value of 5QI.

[0161] Step 1004: SMF sends second mapping indication information and the QFI bound to the PCC rule to UPF. The second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0162] Step 1005: UPF sends a downlink data packet to the Relay UE. The downlink data packet carries the QFI and third mapping indication information, where the third mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0163] Step 1006: The Relay UE determines the QFI carried by the downlink data packet.

[0164] Step 1007: The Relay UE determines the PC5 QoS parameters based on the QFI carried by the downlink data packet. Since the QFI carried by the downlink data packet sent by the SMF is equal to 5QI, the Relay UE can determine the Uu QoS based on the QFI carried by the downlink data packet, and further determine the PC5 QoS based on the Uu QoS.

[0165] Please refer to Fig.11 , which shows a flow chart of a parameter configuration method provided by an embodiment of the present application, which can be applied to the above Figure 1 or Figure 4 In the communication system shown in FIG. 1 , the method may include the following steps:

[0166] Step 1101: The PCF determines the state of the UE or PDU session or SDF corresponding to the PCC rule. The PCF needs to determine whether the UE or PDU session or SDF corresponding to the PCC rule is in a relay state.

[0167] When the UE or PDU session or SDF corresponding to the PCC rule is in the relay state and the 5QI can be set to the QFI bound to the PCC rule, the PCF determines to start the reverse mapping QoS mechanism and then executes the following steps.

[0168] Step 1102: The PCF sends a PCC rule to the SMF, where the PCC rule includes first mapping indication information. The first mapping indication information is used to indicate the start of a reverse mapping QoS parameter mechanism. The PCC rule may also include 5QI.

[0169] Step 1103: The SMF determines the state of the UE or PDU session or SDF corresponding to the PCC rule. The SMF needs to determine whether the UE or PDU session or SDF corresponding to the PCC rule is in a relay state.

[0170] When the SMF determines that the UE or PDU session or SDF corresponding to the PCC rule is in the relay state, the following steps are performed.

[0171] Step 1104, SMF determines the QFI bound to the PCC rule and sets the QFI bound to the PCC rule to 5QI. SMF determines the QoS flow bound to the PCC rule, and can determine the QFI corresponding to the QoS flow, that is, the QFI bound to the PCC rule. At the same time, SMF sets the QFI bound to the PCC rule to 5QI, such as setting the value of the QFI bound to the PCC rule to the value of 5QI.

[0172] Step 1105: SMF sends second mapping indication information and the QFI bound to the PCC rule to UPF. The second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0173] Step 1106: UPF sends a downlink data packet to the Relay UE. The downlink data packet carries the QFI and third mapping indication information, where the third mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism.

[0174] Step 1107: The Relay UE determines the QFI carried by the downlink data packet.

[0175] Step 1108: The Relay UE determines the PC5 QoS parameters based on the QFI carried by the downlink data packet. Since the QFI carried by the downlink data packet sent by the SMF is equal to 5QI, the Relay UE can determine the Uu QoS based on the QFI carried by the downlink data packet, and further determine the PC5 QoS based on the Uu QoS.

[0176] It should be noted that the embodiment of the present application introduces and explains the parameter configuration method provided by the embodiment of the present application from the perspective of the interaction between the relay terminal device and the core network. The above steps performed by the relay terminal device can be independently implemented as a parameter configuration method on the relay terminal device side; the above steps performed by the core network can be independently implemented as a parameter configuration method on the core network side.

[0177] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0178] Please refer to Fig.12 , which shows a block diagram of a parameter configuration device provided by an embodiment of the present application. The device has the function of implementing the method example on the relay terminal device side, and the function can be implemented by hardware or by hardware executing corresponding software. The device can be the relay terminal device described above, or it can be set in the relay terminal device. Fig.12 As shown, the device 1200 may include: a configuration information receiving module 1210.

[0179] The configuration information receiving module 1210 is used to receive parameter configuration information from the core network; wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0180] In an example, the parameter configuration information includes a QFI bound to a PCC rule and a QoS parameter corresponding to the QFI.

[0181] In one example, the QoS parameter corresponding to the QFI includes at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

[0182] In one example, the core network includes a first core network device, which is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacting between the first core network device and the relay terminal device.

[0183] In one example, the core network includes a second core network device, wherein the second core network device is used to provide a user plane function; Fig.13 As shown, the apparatus 1200 also includes: a data packet receiving module 1220, for receiving a downlink data packet from the second core network device; an identification determination module 1230, for determining the QFI carried by the downlink data packet; and a first parameter determination module 1240, for determining the QoS parameters between the relay terminal device and the remote terminal device based on the parameter configuration information and the QFI carried by the downlink data packet.

[0184] In one example, the QoS parameters corresponding to the QFI include QoS parameters between the relay terminal device and the remote terminal device; Fig.13 As shown, the first parameter determination module 1240 is used to: use the QoS parameter corresponding to the QFI carried by the header of the downlink data packet as the QoS parameter between the relay terminal device and the remote terminal device.

[0185] In one example, the QoS parameters corresponding to the QFI include QoS parameters between the relay terminal device and the network device; Fig.13As shown, the first parameter determination module 1240 is used to: use the QoS parameters corresponding to the QFI carried by the header of the downlink data packet as the QoS parameters between the relay terminal device and the network device; based on the QoS parameters between the relay terminal device and the network device, determine the QoS parameters between the relay terminal device and the remote terminal device.

[0186] In an example, the parameter configuration information includes a QFI bound to a PCC rule; wherein the QFI bound to the PCC rule is equal to a system QoS identifier.

[0187] In one example, the system QoS identifier includes 5QI.

[0188] In one example, the core network includes a second core network device, which is used to provide user plane functions; the parameter configuration information is carried in a user plane message interacting between the second core network device and the relay terminal device.

[0189] In one example, the user plane message includes a downlink data packet, and the parameter configuration information is carried in a packet header of the downlink data packet.

[0190] In one example, if Fig.13 As shown, the apparatus 1200 also includes: a second parameter determination module 1250, for determining the QoS parameters between the relay terminal device and the network device based on the parameter configuration information; and a first parameter determination module 1260, for determining the QoS parameters between the relay terminal device and the remote terminal device based on the QoS parameters between the relay terminal device and the network device.

[0191] In summary, the technical solution provided by the embodiment of the present application, when the core network determines to start the reverse mapping QoS parameter mechanism, the core network sends parameter configuration information to the relay terminal device to configure the QoS parameters between the relay terminal device and the remote terminal device, thereby solving the defect that the relay terminal device cannot obtain the QoS parameters when the core network starts the reverse mapping QoS parameters in the relay communication system, and ensuring the service transmission quality between the relay terminal device and the remote terminal device. In addition, in the embodiment of the present application, it is not limited which functional entity in the core network sends the parameter configuration information to the relay terminal device, so that in the actual application process, the sending entity of the parameter configuration information can be flexibly set according to the known information interaction architecture, which is consistent with the known information interaction architecture on the one hand, and improves the compatibility and efficiency of the parameter configuration, and on the other hand, improves the flexibility of the parameter configuration.

[0192] Please refer to Fig.14, which shows a block diagram of a parameter configuration system provided by an embodiment of the present application. The system has the function of implementing the method example on the core network side, and the function can be implemented by hardware, or by hardware executing corresponding software. The system can be the core network described above, or it can be set in the core network. Among them, the parameter configuration system 1400 is used to:

[0193] Send parameter configuration information to the relay terminal device; wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0194] In an example, the parameter configuration information includes a QFI bound to a PCC rule and a QoS parameter corresponding to the QFI.

[0195] In one example, the QoS parameter corresponding to the QFI includes at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

[0196] In one example, the parameter configuration system 1400 includes a first core network device, which is used to provide a control plane function; the parameter configuration information is carried in a control plane message that the first core network device 1410 interacts with the relay terminal device.

[0197] In one example, if Fig.14 As shown, the parameter configuration system 1400 includes a first core network device 1410 and a third core network device 1430, wherein the first core network device 1410 and the third core network device 1430 are used to provide control plane functions; wherein: the third core network device 1430 is used to send PCC rules to the first core network device, the PCC rules include first mapping indication information, and the first mapping indication information is used to indicate whether to start the reverse mapping QoS parameter mechanism; the first core network device 1410 is used to determine the status of the configuration corresponding to the PCC rule; the first core network device 1410 is also used to send the parameter configuration information to the relay terminal device when the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in the relay state.

[0198] In an example, the parameter configuration information includes a QFI bound to a PCC rule; wherein the QFI bound to the PCC rule is equal to a system QoS identifier.

[0199] In one example, the system QoS identifier includes 5QI.

[0200] In one example, if Fig.14 As shown, the parameter configuration system 1400 includes a second core network device 1420, and the second core network device 1420 is used to provide user plane functions; the parameter configuration information is carried in the user plane message interacted between the second core network device 1420 and the relay terminal device.

[0201] In one example, the user plane message includes a downlink data packet, and the parameter configuration information is carried in a packet header of the downlink data packet.

[0202] In one example, if Fig.14 As shown, the parameter configuration system 1400 includes a first core network device 1410, a second core network device 1420 and a third core network device 1430, wherein the first core network device 1410 and the third core network device 1430 are used to provide control plane functions, and the second core network device 1420 is used to provide user plane functions; wherein: the third core network device 1430 is used to send a PCC rule to the first core network device, the PCC rule includes a first mapping indication information, and the first mapping indication information is used to indicate whether to start the reverse mapping QoS parameter mechanism; the first core network device 1410 is used to send a second mapping indication information and a QFI bound to the PCC rule to the second core network device when the first mapping indication information is used to indicate whether to start the reverse mapping QoS parameter mechanism, the configuration corresponding to the PCC rule is in a relay state, and the QFI bound to the PCC rule can be equal to the system QoS identifier, and the second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism; the second core network device 1420 is used to send the parameter configuration information to the relay terminal device.

[0203] In one example, if Fig.14 As shown, the first core network device 1410 is also used to: when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, set the system QoS identifier to the QFI bound to the PCC rule.

[0204] In one example, if Fig.14As shown, the parameter configuration system 1400 includes a first core network device 1410, a second core network device 1420 and a third core network device 1430, wherein the first core network device 1410 and the third core network device 1430 are used to provide control plane functions, and the second core network device 1420 is used to provide user plane functions; wherein: the third core network device 1430 is used to send the PCC rule to the first core network device when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, and the PCC rule includes first mapping indication information, and the first mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism; the first core network device 1410 is used to send the second mapping indication information and the QFI bound to the PCC rule to the second core network device, and the second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism; the second core network device 1420 is used to send the parameter configuration information to the relay terminal device.

[0205] In one example, if Fig.14 As shown, the third core network device 1430 is also used to send an identification setting indication information to the first core network device when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier; the first core network device 1410 is also used to set the system QoS identifier to the QFI bound to the PCC rule according to the first identification indication information.

[0206] In one example, if Fig.14 As shown, the first core network device 1410 is further used to set the system QoS identifier to the QFI bound to the PCC rule when the configuration corresponding to the PCC rule is in a relay state.

[0207] In an example, the configuration corresponding to the PCC rule includes at least one of the following: a terminal device corresponding to the PCC rule, a PDU session corresponding to the PCC rule, and a service data flow SDF corresponding to the PCC rule.

[0208] One point that needs to be explained is that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0209] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0210] Please refer to Fig.15 , which shows a schematic diagram of the structure of a relay terminal device 150 provided in an embodiment of the present application. For example, the relay terminal device can be used to execute the parameter configuration method on the relay terminal device side. Specifically, the relay terminal device 150 may include: a processor 151, and a transceiver 152 connected to the processor 151; wherein:

[0211] The processor 151 includes one or more processing cores. The processor 151 executes various functional applications and information processing by running software programs and modules.

[0212] The transceiver 152 includes a receiver and a transmitter. Optionally, the transceiver 152 is a communication chip.

[0213] In one example, the relay terminal device 150 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement the various steps performed by the relay terminal device in the above method embodiment.

[0214] In addition, the memory may be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tapes, disk storage or other magnetic storage devices. Among them:

[0215] The transceiver 152 is used to receive parameter configuration information from the core network; wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0216] In one example, the parameter configuration information includes a QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI.

[0217] In one example, the QoS parameter corresponding to the QFI includes at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

[0218] In one example, the core network includes a first core network device, which is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacting between the first core network device and the relay terminal device.

[0219] In one example, the core network includes a second core network device, which is used to provide user plane functions; the transceiver 152 is used to receive downlink data packets from the second core network device; the processor 151 is used to determine the QFI carried by the downlink data packet; the processor 151 is used to determine the QoS parameters between the relay terminal device and the remote terminal device based on the parameter configuration information and the QFI carried by the downlink data packet.

[0220] In one example, the QoS parameters corresponding to the QFI include QoS parameters between the relay terminal device and the remote terminal device; the processor 151 is used to: use the QoS parameters corresponding to the QFI carried by the header of the downlink data packet as the QoS parameters between the relay terminal device and the remote terminal device.

[0221] In one example, the QoS parameters corresponding to the QFI include QoS parameters between the relay terminal device and the network device; the processor 151 is used to: use the QoS parameters corresponding to the QFI carried by the header of the downlink data packet as the QoS parameters between the relay terminal device and the network device; based on the QoS parameters between the relay terminal device and the network device, determine the QoS parameters between the relay terminal device and the remote terminal device.

[0222] In an example, the parameter configuration information includes a QFI bound to a PCC rule; wherein the QFI bound to the PCC rule is equal to a system QoS identifier.

[0223] In one example, the system QoS identifier includes 5QI.

[0224] In one example, the core network includes a second core network device, which is used to provide user plane functions; the parameter configuration information is carried in a user plane message interacting between the second core network device and the relay terminal device.

[0225] In one example, the user plane message includes a downlink data packet, and the parameter configuration information is carried in a packet header of the downlink data packet.

[0226] In one example, the processor 151 is used to: determine the QoS parameters between the relay terminal device and the network device based on the parameter configuration information; determine the QoS parameters between the relay terminal device and the remote terminal device based on the QoS parameters between the relay terminal device and the network device.

[0227] Please refer to Fig.16 , which shows a schematic diagram of the structure of a core network device 160 provided in an embodiment of the present application. For example, the core network device can be used to execute the parameter configuration method on the core network side. Specifically, the core network device 160 may include: a processor 161, and a transceiver 162 connected to the processor 161; wherein:

[0228] The processor 161 includes one or more processing cores. The processor 161 executes various functional applications and information processing by running software programs and modules.

[0229] The transceiver 162 includes a receiver and a transmitter. Optionally, the transceiver 162 is a communication chip.

[0230] In one example, the core network device 160 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement each step performed by the core network in the above method embodiment.

[0231] In addition, the memory may be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tapes, disk storage or other magnetic storage devices. Among them:

[0232] The transceiver 162 is used to send parameter configuration information to the relay terminal device; wherein the parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping QoS parameter mechanism is started.

[0233] In an example, the parameter configuration information includes a QFI bound to a PCC rule and a QoS parameter corresponding to the QFI.

[0234] In one example, the QoS parameter corresponding to the QFI includes at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

[0235] In one example, the parameter configuration system includes a first core network device, which is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacted between the first core network device and the relay terminal device.

[0236] In one example, the parameter configuration system includes a first core network device and a third core network device, wherein the first core network device and the third core network device are used to provide control plane functions; wherein: the transceiver of the third core network device is used to send PCC rules to the first core network device, the PCC rules include first mapping indication information, and the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism; the processor of the first core network device is used to determine the status of the configuration corresponding to the PCC rule; the transceiver of the first core network device is also used to send the parameter configuration information to the relay terminal device when the first mapping indication information is used to indicate the start of a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state.

[0237] In an example, the parameter configuration information includes a QFI bound to a PCC rule; wherein the QFI bound to the PCC rule is equal to a system QoS identifier.

[0238] In one example, the system QoS identifier includes 5QI.

[0239] In one example, the parameter configuration system includes a second core network device, which is used to provide user plane functions; the parameter configuration information is carried in a user plane message interacting between the second core network device and the relay terminal device.

[0240] In one example, the user plane message includes a downlink data packet, and the parameter configuration information is carried in a packet header of the downlink data packet.

[0241] In one example, the parameter configuration system includes a first core network device, a second core network device and a third core network device, the first core network device and the third core network device are used to provide control plane functions, and the second core network device is used to provide user plane functions; wherein: the transceiver of the third core network device is used to send PCC rules to the first core network device, the PCC rules include first mapping indication information, and the first mapping indication information is used to indicate whether to start the reverse mapping QoS parameter mechanism; the transceiver of the first core network device is used to send second mapping indication information and the QFI bound to the PCC rule to the second core network device when the first mapping indication information is used to indicate whether to start the reverse mapping QoS parameter mechanism, the configuration corresponding to the PCC rule is in a relay state, and the QFI bound to the PCC rule can be equal to the system QoS identifier, and the second mapping indication information is used to indicate the start of the reverse mapping QoS parameter mechanism; the transceiver of the second core network device is used to send the parameter configuration information to the relay terminal device.

[0242] In one example, the processor of the first core network device is further used to: when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, set the system QoS identifier to the QFI bound to the PCC rule.

[0243] In one example, the parameter configuration system includes a first core network device, a second core network device and a third core network device, the first core network device and the third core network device are used to provide control plane functions, and the second core network device is used to provide user plane functions; wherein: the transceiver of the third core network device is used to send the PCC rule to the first core network device when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier, the PCC rule includes first mapping indication information, and the first mapping indication information is used to indicate the start of a reverse mapping QoS parameter mechanism; the transceiver of the first core network device is used to send second mapping indication information and the QFI bound to the PCC rule to the second core network device, and the second mapping indication information is used to indicate the start of a reverse mapping QoS parameter mechanism; the transceiver of the second core network device is used to send the parameter configuration information to the relay terminal device.

[0244] In one example, the transceiver of the third core network device is also used to send identification setting indication information to the first core network device when the configuration corresponding to the PCC rule is in a relay state and the QFI bound to the PCC rule can be equal to the system QoS identifier; the processor of the first core network device is also used to set the system QoS identifier to the QFI bound to the PCC rule according to the first identification indication information.

[0245] In an example, the processor of the first core network device is further configured to set the system QoS identifier to the QFI bound to the PCC rule when the configuration corresponding to the PCC rule is in a relay state.

[0246] In an example, the configuration corresponding to the PCC rule includes at least one of the following: a terminal device corresponding to the PCC rule, a PDU session corresponding to the PCC rule, and a service data flow SDF corresponding to the PCC rule.

[0247] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a relay terminal device to implement the parameter configuration method on the relay terminal device side as described above.

[0248] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a core network device to implement the parameter configuration method on the core network side as described above.

[0249] An embodiment of the present application further provides a chip, wherein the storage medium stores a computer program, and the computer program is used to be executed by a processor of a relay terminal device to implement the parameter configuration method on the relay terminal device side as described above.

[0250] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a core network device, it is used to implement the parameter configuration method on the core network side as described above.

[0251] The embodiment of the present application also provides a computer program product, which, when executed on a relay terminal device, is used to implement the parameter configuration method on the relay terminal device side as described above.

[0252] An embodiment of the present application also provides a computer program product, which, when running on a core network device, is used to implement the parameter configuration method on the core network side as described above.

[0253] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0254] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A parameter configuration method, characterized in that: Applied in a relay terminal device, the method comprises: Receiving parameter configuration information from the first core network device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; The receiving parameter configuration information from the first core network device includes: When the first mapping indication information included in the PCC rule is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state, receiving the parameter configuration information from the first core network device; The PCC rule is received by the first core network device from a third core network device, the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism, the third core network device is used to provide a control plane function, and a state of the configuration corresponding to the PCC rule is determined by the first core network device; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

2. The method according to claim 1, characterized in that The QoS parameters corresponding to the QFI include at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

3. The method according to claim 1 or 2, characterized in that: The first core network device is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacted between the first core network device and the relay terminal device.

4. A parameter configuration method, characterized in that: Applied to a first core network device, the method includes: Send parameter configuration information to the relay terminal device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; The sending of parameter configuration information to the relay terminal device includes: The first core network device receives a PCC rule from a third core network device, where the PCC rule includes first mapping indication information, where the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism, and the third core network device is used to provide a control plane function; The first core network device determines a state of a configuration corresponding to the PCC rule; The first core network device sends the parameter configuration information to the relay terminal device when the first mapping indication information is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

5. The method according to claim 4, characterized in that The QoS parameters corresponding to the QFI include at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

6. The method according to claim 4 or 5, characterized in that: The first core network device is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacted between the first core network device and the relay terminal device.

7. The method according to claim 4, characterized in that The configuration corresponding to the PCC rule also includes at least one of the following: a terminal device corresponding to the PCC rule, and a service data flow SDF corresponding to the PCC rule.

8. A parameter configuration device, characterized in that: Set in a relay terminal device, the device includes: A configuration information receiving module, used to receive parameter configuration information from the first core network device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; Wherein, the configuration information receiving module is also used for: When the first mapping indication information included in the PCC rule is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state, receiving the parameter configuration information from the first core network device; The PCC rule is received by the first core network device from a third core network device, the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism, the third core network device is used to provide a control plane function, and a state of the configuration corresponding to the PCC rule is determined by the first core network device; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

9. The device according to claim 8, characterized in that The QoS parameters corresponding to the QFI include at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

10. The device according to claim 8 or 9, characterized in that The first core network device is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacted between the first core network device and the relay terminal device.

11. A parameter configuration system, characterized in that: The parameter configuration system is used to: Send parameter configuration information to the relay terminal device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; The parameter configuration system includes a first core network device and a third core network device, and the third core network device is used to provide a control plane function; The third core network device is used to send a PCC rule to the first core network device, where the PCC rule includes first mapping indication information, and the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism; The first core network device is used to determine a state of a configuration corresponding to the PCC rule; The first core network device is further configured to send the parameter configuration information to the relay terminal device when the first mapping indication information is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

12. The system according to claim 11, characterized in that The QoS parameters corresponding to the QFI include at least one of the following: a QoS parameter between the relay terminal device and the remote terminal device, and a QoS parameter between the relay terminal device and a network device.

13. The system according to claim 11 or 12, characterized in that The first core network device is used to provide a control plane function; the parameter configuration information is carried in a control plane message interacted between the first core network device and the relay terminal device.

14. The system according to claim 11, characterized in that The configuration corresponding to the PCC rule also includes at least one of the following: a terminal device corresponding to the PCC rule, and a service data flow SDF corresponding to the PCC rule.

15. A relay terminal device, characterized in that: The relay terminal device includes: a processor, and a transceiver connected to the processor; wherein: The transceiver is used to receive parameter configuration information from the first core network device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; Wherein, the transceiver is also used for: When the first mapping indication information included in the PCC rule is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state, receiving the parameter configuration information from the first core network device; The PCC rule is received by the first core network device from a third core network device, the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism, the third core network device is used to provide a control plane function, and a state of the configuration corresponding to the PCC rule is determined by the first core network device; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

16. A core network device, characterized in that: The core network device includes: a processor, and a transceiver connected to the processor; wherein: The transceiver is used to send parameter configuration information to the relay terminal device; The parameter configuration information is used to configure the QoS parameters between the relay terminal device and the remote terminal device when the reverse mapping service quality QoS parameter mechanism is started; The parameter configuration information includes a QoS flow identifier QFI bound to a policy and charging control PCC rule, and a QoS parameter corresponding to the QFI; Wherein, the transceiver is also used for: receiving a PCC rule from a third core network device, where the PCC rule includes first mapping indication information, where the first mapping indication information is used to indicate whether to start a reverse mapping QoS parameter mechanism, and the third core network device is used to provide a control plane function; Determining a status of a configuration corresponding to the PCC rule; When the first mapping indication information is used to indicate starting a reverse mapping QoS parameter mechanism and the configuration corresponding to the PCC rule is in a relay state, sending the parameter configuration information to a relay terminal device; and The configuration corresponding to the PCC rule includes a PDU session corresponding to the PCC rule.

17. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to be executed by a processor of the relay terminal device to implement the parameter configuration method according to any one of claims 1 to 3.

18. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is used to be executed by a processor of a core network device to implement the parameter configuration method as described in any one of claims 4 to 7.

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