Method, terminal device and network device for enabling reverse mapping mechanism

Abstract

Embodiments of the present application relate to a method, a terminal device and a network device for enabling a reverse mapping mechanism, wherein the method comprises: the terminal device receiving a reverse mapping indication; and the terminal device generating a quality of service (QoS) rule for corresponding data according to the reverse mapping indication. Embodiments of the present application can enable the reverse mapping mechanism for a UE, thereby reducing signaling interaction between the UE and the network.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communications, and more particularly, to a method, a terminal device and a network device for enabling a reverse mapping mechanism. BACKGROUND

[0002] The fifth generation mobile communication technology (5G, 5th generation mobile networks or 5th generation wireless systems, 5th-Generation) network considers supporting multiple new services, which may result in complex and frequent updates of the quality of service (QoS, Quality of Service) rules configured to the user equipment (UE, User Equipment). Therefore, an optional mechanism of reverse mapping QoS control is introduced in the 5G network. The main idea is to add a QoS flow identity (QFI, QoS Flow Identity) and a reverse mapping indication in the header of the downlink data packet, and the UE generates QoS rules by itself according to the received downlink data, which are used for the transmission of uplink data, thereby reducing the signaling interaction between the session management function (SMF, Session Management Function) and the UE.

[0003] A UE with proximity service (ProSe, Proximity-based Services) capability can directly communicate with another UE with ProSe capability through a PC5 wireless interface. When a UE has both the ability to connect to an external data network through a 5G network and the ProSe capability, this UE can act as a relay UE, and another remote UE with ProSe capability can establish a direct connection with the relay UE through the PC5 interface, and interact with the external network through the protocol data unit (PDU, Protocol Data Unit) session established by the relay UE and the 5G network. Multiple remote UEs can access the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) network through the same relay UE, which may result in frequent interaction between the relay UE and the 3GPP network, for example, the SMF sends corresponding QoS rules to the relay UE for each remote UE service, and the signaling congestion between the relay UE and the 3GPP network is greatly increased. The prior art cannot enable the reverse mapping mechanism for the UE in this case. SUMMARY

[0004] The embodiment of the present application provides a method, a terminal device and a network device for enabling a reverse mapping mechanism, and the reverse mapping mechanism can be enabled for some specific UEs to reduce signaling interaction between the UEs and the network.

[0005] The embodiment of the present application provides a method for enabling a reverse mapping mechanism, comprising:

[0006] The terminal device receives a reverse mapping indication.

[0007] The terminal device generates a quality of service (QoS) rule for corresponding data according to the reverse mapping indication.

[0008] The embodiment of the present application also provides a method for enabling a reverse mapping mechanism, comprising:

[0009] The first network device sends a reverse mapping indication.

[0010] The embodiment of the present application also provides a method for enabling a reverse mapping mechanism, comprising:

[0011] The second network device receives at least one of a reverse mapping request of a terminal device, a state of the terminal device and a type of the terminal device.

[0012] The second network device enables a reverse mapping mechanism for the terminal device according to the received content.

[0013] The embodiment of the present application also provides a method for enabling a reverse mapping mechanism, comprising:

[0014] The third network device sends at least one of a reverse mapping request of a terminal device, a state of the terminal device and a type of the terminal device.

[0015] The embodiment of the present application also provides a terminal device, comprising:

[0016] An indication receiving module is configured to receive a reverse mapping indication.

[0017] A rule generating module is configured to generate a QoS rule for corresponding data according to the reverse mapping indication.

[0018] The embodiment of the present application also provides a network device, comprising:

[0019] A first indication module is configured to send a reverse mapping indication.

[0020] The embodiment of the present application also provides a network device, comprising:

[0021] A request receiving module is configured to receive at least one of a reverse mapping request of a terminal device, a state of the terminal device and a type of the terminal device.

[0022] An enabling module is configured to enable the reverse mapping mechanism for the terminal device according to the received content.

[0023] A second indication module is configured to send the reverse mapping indication.

[0024] Embodiments of the present application further provide a network device, comprising:

[0025] A second sending module is configured to send at least one of the reverse mapping request of the terminal device, the state of the terminal device and the type of the terminal device.

[0026] Embodiments of the present application further provide a terminal device, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory to execute any method performed by the terminal device.

[0027] Embodiments of the present application further provide a network device, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory to execute any method performed by the network device.

[0028] Embodiments of the present application further provide a chip, comprising a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip executes any method performed by the terminal device.

[0029] Embodiments of the present application further provide a chip, comprising a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip executes any method performed by the network device.

[0030] Embodiments of the present application further provide a computer readable storage medium configured to store a computer program, wherein the computer program causes a computer to execute any method performed by the terminal device.

[0031] Embodiments of the present application further provide a computer readable storage medium configured to store a computer program, wherein the computer program causes a computer to execute any method performed by the network device.

[0032] Embodiments of the present application further provide a computer program product, comprising computer program instructions, wherein the computer program instructions cause a computer to execute any method performed by the terminal device.

[0033] Embodiments of the present application further provide a computer program product, comprising computer program instructions, wherein the computer program instructions cause a computer to execute any method performed by the network device.

[0034] The embodiment of the present application further provides a computer program, which enables a computer to execute any method performed by the terminal device.

[0035] The embodiment of the present application further provides a computer program, which enables a computer to execute any method performed by the network device.

[0036] The embodiment of the present application enables the reverse mapping mechanism for some UEs by receiving the reverse mapping indication by the terminal device and generating the QoS rule according to the reverse mapping indication, thereby reducing the signaling interaction between the UE and the network. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1A is a schematic diagram of an application scenario one of the embodiment of the present application.

[0038] Figure 1B is a schematic diagram of an application scenario two of the embodiment of the present application.

[0039] Figure 2 is a schematic flow chart of a method 200 for enabling the reverse mapping mechanism according to the embodiment of the present application.

[0040] Figure 3A is a schematic diagram one for enabling the reverse mapping mechanism of the embodiment of the present application.

[0041] Figure 3B is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Two .

[0042] Figure 3C is a schematic diagram three for enabling the reverse mapping mechanism of the embodiment of the present application.

[0043] Figure 3D is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Four .

[0044] Figure 3E is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Five .

[0045] Figure 3F is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Six .

[0046] Figure 3G is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Seven .

[0047] Figure 3H is a schematic diagram for enabling the reverse mapping mechanism of the embodiment of the present application Figure Eight .

[0048] Figure 4 is a schematic flow chart of a method 400 for enabling a reverse mapping mechanism according to an embodiment of the application.

[0049] Figure 5 is a schematic flow chart of a method 500 for enabling a reverse mapping mechanism according to an embodiment of the application.

[0050] Figure 6 is a schematic flow chart of a method 600 for enabling a reverse mapping mechanism according to an embodiment of the application.

[0051] Figure 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the application.

[0052] Figure 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the application.

[0053] Figure 9 is a schematic structural diagram of a network device 900 according to an embodiment of the application.

[0054] Figure 10 is a schematic structural diagram of a network device 1000 according to an embodiment of the application.

[0055] Figure 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the application.

[0056] Figure 12 is a schematic structural diagram of a network device 1200 according to an embodiment of the application.

[0057] Figure 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the application.

[0058] Figure 14 is a schematic structural diagram of a chip 1400 according to an embodiment of the application. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the application will be described below with reference to the drawings in the embodiments of the application.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the embodiments of the application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. The objects described by "first", "second" can be the same or different.

[0061] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a 5th-Generation (5G) system, or other communication systems.

[0062] Generally, a conventional communication system supports a limited number of connections, and is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), and Vehicle to Vehicle (V2V) communication, and the like. The embodiments of the present application can also be applied to these communication systems.

[0063] Optionally, the communication system in the embodiments of the present application can be applied to a Carrier Aggregation (CA) scenario, can also be applied to a Dual Connectivity (DC) scenario, and can also be applied to a Standalone (SA) network deployment scenario.

[0064] The spectrum to which the embodiments of the present application are applied is not limited. For example, the embodiments of the present application can be applied to licensed spectrum, and can also be applied to unlicensed spectrum.

[0065] The embodiments of the present application describe various embodiments in combination with network devices and terminal devices, wherein the terminal device can also be referred to as a user equipment (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 user terminal, a terminal, a wireless communication device, a user agent or a user apparatus, etc. The terminal device can be a station (STA) in a WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a next-generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0066] By way of example and not limitation, in the embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing and shoes, etc. The wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. The wearable device is not only a hardware device, but also a powerful function realized through software support and data interaction, cloud interaction. The general wearable smart device includes a full function, large size, and can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses, etc., and focuses on a certain application function, and needs to cooperate with other devices such as a smart phone, such as various smart wristbands, smart jewelry, etc. for monitoring body signs.

[0067] The network device can be a device for communicating with the mobile device, can be an access point (AP) in a WLAN, a base transceiver station (BTS) in GSM or CDMA, can also be a base station (NodeB, NB) in WCDMA, can further be an evolved base station (eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in an NR network (gNB) or a network device in a future evolved PLMN network, and the like.

[0068] In the embodiments of the present application, the network device provides services for a cell, and a terminal device communicates with the network device by using transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, and the like. The small cell has the characteristics of small coverage and low transmission power, and is suitable for providing high-speed data transmission services.

[0069] Figure 1A FIG. 1 is a schematic diagram of an application scenario one of the embodiments of the present application. Figure 1AAn exemplary 5G network system architecture is shown. Among them, the UE is connected with the access network (AN) through the Uu wireless interface to access the layer, and interacts with the access layer message and wireless data transmission. The UE is connected with the mobility management function (AMF) through the N1 interface to interact with the non-access layer (NAS) message. The AMF is the mobility management function in the core network, the session management function (SMF) is the session management function in the core network, and the AMF is responsible for forwarding the session management related messages between the UE and the SMF in addition to the mobility management of the UE. The policy control function (PCF) is the policy management function in the core network, which is responsible for formulating the policy related to the mobility management, session management, charging and the like of the UE. The user plane function (UPF) is the user plane function in the core network, which transmits data with the external data network through the N6 interface and transmits data with the AN through the N3 interface.

[0070] After the UE accesses the 5G network, the SMF in the core network sends the QoS rule to the UE through the control signaling, and the UE uses the QoS rule to match the uplink service data and map the uplink service data to the appropriate QoS flow for QoS control. The 5G network considers supporting multiple new services, which may result in complex configuration and frequent update of the QoS rule configured to the UE. Therefore, the 5G network introduces an optional mechanism of reverse mapping QoS control. The main idea of the reverse mapping mechanism is to add QFI and reverse mapping indication in the downlink packet header, and the UE generates QoS rule according to the received downlink data for uplink data transmission, thereby reducing the signaling interaction between the SMF and the UE.

[0071] Figure 1B is a schematic diagram of application scenario two of the embodiment of the application. As shown in Figure 1B , the UE with Prose capability can directly communicate with another UE with Prose capability through the PC5 wireless interface. When a UE has both the function of connecting to the external data network through the 5G network and the Prose capability, the UE can act as a relay UE, and another remote UE with Prose capability can establish a direct connection with the relay UE through the PC5 interface, and interact with the external network through the PDU session established by the relay UE and the 5G network. As shown in Figure 1BAs shown, the remote UE establishes a PDU session with the 5G network through the relay UE, i.e., the ProSe 5G UE-to-Network Relay.

[0072] The prior art Figure 1B In the technical solution, multiple remote UEs can access the 3GPP network through the same relay UE, which can cause the relay UE to frequently interact with the 3GPP network, for example, for the service of each remote UE, the SMF needs to send the corresponding QoS rule to the relay UE, and the possibility of signaling congestion between the relay UE and the 3GPP network is greatly increased.

[0073] The above application scenarios are examples of scenarios in which embodiments of the present application can be applied. Embodiments of the present application are not limited to the above application scenarios and are not limited to the 5G network scenario. The above related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all fall within the scope of protection of the embodiments of the present application.

[0074] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein is merely a description of the associated relationship between the associated objects. For example, A and / or B can represent three cases: A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects.

[0075] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or an indication representing an associated relationship. For example, A indicates B, which can mean that B can be obtained by A directly; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0076] The embodiments of the present application propose a method for enabling a reverse mapping mechanism, Figure 2 is a schematic flowchart of a method 200 for enabling a reverse mapping mechanism according to the embodiments of the present application. The method can be optionally applied to Figure 1A and Figure 1B The system shown, as applied to Figure 1A and Figure 1B The terminal device (UE) in the system shown, such as the remote UE, but not limited thereto. The method includes at least part of the following content.

[0077] S210: The terminal device receives a reverse mapping indication;

[0078] S220: The terminal device generates a quality of service (QoS) rule for the corresponding data according to the reverse mapping indication.

[0079] Optionally, the terminal device described above can include a remote UE, such as a remote UE connected with multiple remote UEs. The possibility of signaling congestion between such remote UEs and the 3GPP network is relatively large. Embodiments of the present application can use the PCF or the SMF to obtain the state or type of the UE as a relay UE, or enable the reverse mapping mechanism for the UE according to the UE request. Optionally, the reverse mapping mechanism can be enabled for all data of the UE, or for data of a specific PDU session or specific service data flow of the UE, thereby reducing the signaling interaction between the relay UE and the network.

[0080] The present application includes implementation manners, Figure 1A In the 3GPP network, multiple network devices can enable the reverse mapping mechanism or request to enable the reverse mapping mechanism. The following describes Figures 3A to 3H specific ways of enabling the reverse mapping mechanism.

[0081] Figure 3A An example of enabling the reverse mapping mechanism for embodiments of the present application is shown in Figure 1. As shown in Figure 1, the following steps are included: Figure 3A

[0082] Step 1: The UE sends a reverse mapping request to the AMF to request to enable the reverse mapping mechanism, for example, the UE can send the request when detecting or predicting a signaling congestion situation. Or the UE sends the state of the UE to the AMF, indicating that it is currently in the relay state of serving other remote UEs; or the UE sends the type of the UE to the AMF, indicating that the type of the UE is the relay type.

[0083] Step 2: The AMF sends the reverse mapping request received from the UE, the state of the UE as a relay, or the type of the UE as a relay to the SMF.

[0084] Step 3: The SMF sends the reverse mapping request received from the AMF, the state of the UE as a relay, or the type of the UE as a relay to the PCF.

[0085] ​Step 4: The PCF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the state of the UE as a relay, or the type of the UE as a relay. The PCF can enable the reverse mapping mechanism for all data of the UE, or for the data of a certain PDU session of the UE, or for the data of a certain application of the UE, or for the data of a certain traffic data flow of the UE.

[0086] Step 5: The PCF sends a reverse mapping indication to the SMF, and indicates the corresponding range of the reverse mapping, such as all data of the UE, data of the UE with a certain PDU session identifier, or data of the UE with certain traffic data flow information. The traffic data flow information can include flow template information of the traffic data, a traffic data flow identifier, or an application identifier, etc. The flow template information of the traffic data can include IP five-tuple information.

[0087] After receiving the reverse mapping indication and the corresponding range of the reverse mapping sent by the SMF, the SMF can perform the following step 6 or step 7. That is, the following step 6 and step 7 are two parallel optional schemes.

[0088] Step 6: The SMF sends the traffic data flow information and the reverse mapping indication received from the PCF to the UPF, and enables the reverse mapping mechanism in the user plane by the UPF. The UE can generate QoS rules by itself after receiving the user plane data carrying the reverse mapping indication sent by the UPF.

[0089] Step 7: The SMF sends a reverse mapping indication to the UE through signaling, and indicates the corresponding range of the reverse mapping, such as all data of the UE, data of the UE with a PDU session identifier, or data of the UE with a certain application identifier. The UE can generate QoS rules for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0090] Figure 3B Enabling the reverse mapping mechanism for the embodiments of the present application Figure Two . As Figure 3B shown, the following steps are included:

[0091] Step 1: The UE sends a reverse mapping request to the AMF to request to enable the reverse mapping mechanism, for example, the UE can send the request when detecting or predicting a signaling congestion situation. Or the UE sends the state of the UE to the AMF, indicating that it is currently in the state of a relay serving other remote UEs; or the UE sends the type of the UE to the AMF, indicating that the type of the UE is a relay type.

[0092] Step 2: The AMF sends the reverse mapping request received from the UE, the status of the UE as a relay, or the type of the UE as a relay to the PCF.

[0093] Step 3: The PCF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the status of the UE as a relay, or the type of the UE as a relay. The PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a certain application of the UE, or for data of a certain traffic data flow of the UE.

[0094] Step 4: The PCF sends a reverse mapping indication to the SMF and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with a certain PDU session identifier, or data of the UE with certain traffic data flow information. The traffic data flow information can include flow template information of the traffic data, a traffic data flow identifier, or application identifier, etc. The flow template information of the traffic data can include IP five-tuple information.

[0095] After receiving the reverse mapping indication and the corresponding range of the reverse mapping sent by the SMF, the SMF can perform the following step 5 or step 6. That is, the following step 5 and step 6 are two parallel optional solutions.

[0096] Step 5: The SMF sends the traffic data flow information and the reverse mapping indication received from the PCF to the UPF, and enables the reverse mapping mechanism in the user plane by the UPF. The UE can generate QoS rules by itself after receiving the user plane data carrying the reverse mapping indication sent by the UPF.

[0097] Step 6: The SMF sends the reverse mapping indication to the UE through signaling and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with a PDU session identifier, or data of the UE with a certain application identifier. The UE can generate QoS rules for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0098] Figure 3C An example of enabling the reverse mapping mechanism for the embodiment of the present application is shown in Figure 3. As shown in Figure 3, the following steps are included: Figure 3C

[0099] ​Step 1: AMF determines the status / type of the UE. For example, the AMF obtains from the Unified Data Manager (UDM) that the UE is of relay type, or the AMF obtains from the UDM that the UE is in a relay state serving other remote UEs. Alternatively, the AMF determines to request enabling the reverse mapping mechanism for the UE according to the signaling load status.

[0100] Step 2: The AMF sends the reverse mapping request, the status of the UE being a relay, or the type of the UE being a relay, to the SMF.

[0101] Step 3: The SMF sends the reverse mapping request, the status of the UE being a relay, or the type of the UE being a relay, received from the AMF to the PCF.

[0102] Step 4: The PCF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the status of the UE being a relay, or the type of the UE being a relay. The PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a certain application of the UE, or for data of a certain traffic data flow of the UE.

[0103] Step 5: The PCF sends a reverse mapping indication to the SMF, and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with a certain PDU session identifier, or data of the UE with certain traffic data flow information. The traffic data flow information can include flow template information of the traffic data, a traffic data flow identifier, or an application identifier, etc. The flow template information of the traffic data can include IP five-tuple information.

[0104] After receiving the reverse mapping indication and the corresponding range of the reverse mapping sent by the SMF, the SMF can perform the following step 6 or step 7. That is, the following step 6 and step 7 are two parallel optional solutions.

[0105] Step 6: The SMF sends the traffic data flow information and the reverse mapping indication received from the PCF to the UPF, and the UPF enables the reverse mapping mechanism in the user plane. The UE can generate a QoS rule by itself after receiving user plane data carrying the reverse mapping indication sent by the UPF.

[0106] Step 7: The SMF signals the reverse mapping indication to the UE, and indicates the corresponding range of the reverse mapping, such as all data of the UE, data of the UE with a PDU session identifier, or data of the UE with a specific application identifier. The UE can generate QoS rules for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0107] Figure 3D Enabling the reverse mapping mechanism for the embodiments of the present application Figure Four As shown in Figure 3D , the following steps are included:

[0108] Step 1: The AMF determines the state / type of the UE. For example, the AMF obtains from the UDM that the UE is of a relay type, or the AMF obtains from the UDM that the UE is in a relay state of serving other remote UEs. Alternatively, the AMF determines to request enabling the reverse mapping mechanism for the UE according to the signaling load condition.

[0109] Step 2: The AMF sends a reverse mapping request, a state of the UE being a relay, or a type of the UE being a relay, to the PCF.

[0110] Step 3: The PCF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the state of the UE being a relay, or the type of the UE being a relay. The PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a specific application of the UE, or for data of a specific traffic data flow of the UE.

[0111] Step 4: The PCF sends a reverse mapping indication to the SMF, and indicates the corresponding range of the reverse mapping, such as all data of the UE, data of the UE with a specific PDU session identifier, or data of the UE with specific traffic data flow information. The traffic data flow information can include flow template information of traffic data, a traffic data flow identifier, or application identifier, etc. The flow template information of traffic data can include IP five-tuple information.

[0112] After receiving the reverse mapping indication and the corresponding range of the reverse mapping sent by the SMF, the SMF can perform the following step 5 or step 6. That is, the following step 5 and step 6 are two parallel optional schemes.

[0113] Step 5: The SMF sends the traffic data flow information and the reverse mapping indication received from the PCF to the UPF, and enables the reverse mapping mechanism in the user plane by the UPF. The UE can generate QoS rules by itself after receiving the user plane data carrying the reverse mapping indication sent by the UPF.

[0114] Step 6: The SMF signals the reverse mapping indication to the UE, and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with a PDU session identifier, or data of the UE with a specific application identifier. The UE can generate the QoS rule for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0115] Figure 3E Enabling the reverse mapping mechanism for the embodiments of the present application Figure Five As shown in Figure 3E , the following steps are included:

[0116] Step 1: The SMF determines the state / type of the UE. For example, the SMF obtains from the UDM that the UE is of a relay type, or the SMF obtains from the UDM that the UE is in a relay state of serving other remote UEs. Alternatively, the SMF determines to request enabling the reverse mapping mechanism for the UE according to the signaling load condition.

[0117] Step 2: The SMF sends the reverse mapping request, the state of the UE being a relay, or the type of the UE being a relay, to the PCF.

[0118] Step 3: The PCF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the state of the UE being a relay, or the type of the UE being a relay. The PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a specific application of the UE, or for data of a specific service data flow of the UE.

[0119] Step 4: The PCF sends the reverse mapping indication to the SMF, and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with a specific PDU session identifier, or data of the UE with specific service data flow information. The service data flow information can include flow template information of service data, service data flow identifier, or application identifier, etc. The flow template information of service data can include IP five-tuple information.

[0120] After receiving the reverse mapping indication and the corresponding range of the reverse mapping sent by the SMF, the SMF can perform the following Step 5 or Step 6. That is, Step 5 and Step 6 below are two parallel optional solutions.

[0121] Step 5: SMF sends the traffic data flow information and the reverse mapping indication received from PCF to UPF, and UPF enables the reverse mapping mechanism in the user plane. UE can generate QoS rules by itself after receiving the user plane data sent by UPF carrying the reverse mapping indication.

[0122] Step 6: SMF sends the reverse mapping indication to UE through signaling, and indicates the range corresponding to the reverse mapping, for example, all data of the UE, data of the UE with PDU session identifier, or data of the UE with specific application identifier. UE can generate QoS rules for corresponding data by itself according to the reverse mapping indication received from SMF.

[0123] Figure 3F Enabling reverse mapping mechanism for embodiments of the present application Figure Six As shown in Figure 3F , the following steps are included:

[0124] Step 1: UE sends a reverse mapping request to AMF, requesting to enable the reverse mapping mechanism, for example, UE can send the request when detecting or predicting signaling congestion. Or UE sends the state of the UE to AMF, indicating that it is currently in the state of relay serving other remote UE; or UE sends the type of the UE to AMF, indicating that the type of the UE is relay type.

[0125] Step 2: AMF sends the reverse mapping request received from UE, the state of UE as relay, or the type of UE as relay to SMF.

[0126] Step 3: SMF determines to enable the reverse mapping mechanism for UE according to the received reverse mapping request, the state of UE as relay, or the type of UE as relay. PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a specific application of the UE, or for data of a specific traffic data flow of the UE. Among them, the traffic data flow information can include flow template information of traffic data, traffic data flow identifier or application identifier and other information. Among them, the flow template information of traffic data can include IP five tuple information.

[0127] After enabling the reverse mapping mechanism, SMF can perform the following steps 4 or step 5. That is, the following steps 4 and step 5 are two parallel optional schemes.

[0128] Step 4: SMF sends the traffic data flow information and the reverse mapping indication to UPF, and UPF enables the reverse mapping mechanism in the user plane. UE can generate QoS rules by itself after receiving the user plane data sent by UPF carrying the reverse mapping indication.

[0129] Step 5: SMF sends the reverse mapping indication to UE through signaling, and indicates the corresponding range of reverse mapping, such as all data of the UE, data of the UE with PDU session identifier, or data of the UE with specific application identifier. UE can generate QoS rules for corresponding data by itself according to the reverse mapping indication received from SMF.

[0130] Figure 3G Enabling reverse mapping mechanism for embodiments of the present application Figure Seven As shown in Figure 3G , the following steps are included:

[0131] Step 1: AMF determines the state / type of UE. For example, AMF obtains from UDM that the UE is of relay type, or AMF obtains from UDM that the UE is in the state of serving other remote UEs as relay. Or, AMF determines to request enabling the reverse mapping mechanism for the UE according to the signaling load condition.

[0132] Step 2: AMF sends the reverse mapping request, the state of UE as relay, or the type of UE as relay to SMF.

[0133] Step 3: SMF determines to enable the reverse mapping mechanism for the UE according to the received reverse mapping request, the state of UE as relay, or the type of UE as relay. PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a specific application of the UE, or for data of a specific traffic data flow of the UE. Among them, the traffic data flow information can include flow template information of traffic data, traffic data flow identifier or application identifier and the like. Among them, the flow template information of traffic data can include IP five tuple information.

[0134] After enabling the reverse mapping mechanism, SMF can perform the following step 4 or step 5. That is, the following step 4 and step 5 are two parallel optional schemes.

[0135] Step 4: SMF sends the traffic data flow information and the reverse mapping indication received from PCF to UPF, and UPF enables the reverse mapping mechanism in the user plane. UE can generate QoS rules by itself after receiving the user plane data sent by UPF carrying the reverse mapping indication.

[0136] Step 5: The SMF signals the reverse mapping indication to the UE, and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with PDU session identity, or data of the UE with specific application identity. The UE can generate QoS rules for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0137] Figure 3H Enabling the reverse mapping mechanism for the embodiments of the present application Figure Eight As shown in Figure 3H , the following steps are included:

[0138] Step 1: The SMF determines the state / type of the UE. For example, the SMF obtains from the UDM that the UE is of the relay type, or the SMF obtains from the UDM that the UE is in the relay state of serving other remote UEs. Alternatively, the SMF determines to enable the reverse mapping mechanism for the UE according to the signaling load condition.

[0139] The PCF can enable the reverse mapping mechanism for all data of the UE, or for data of a certain PDU session of the UE, or for data of a specific application of the UE, or for data of a specific traffic flow of the UE.

[0140] The traffic flow information can include flow template information of the traffic data, traffic flow identity, or application identity, etc. The flow template information of the traffic data can include IP five-tuple information.

[0141] After enabling the reverse mapping mechanism, the SMF can perform the following step 2 or step 3. That is, the following step 2 and step 3 are two parallel optional schemes.

[0142] Step 2: The SMF sends the traffic flow information and the reverse mapping indication received from the PCF to the UPF, and enables the reverse mapping mechanism in the user plane by the UPF. The UE can generate QoS rules by itself after receiving the user plane data carrying the reverse mapping indication sent by the UPF.

[0143] Step 3: The SMF signals the reverse mapping indication to the UE, and indicates the corresponding range of the reverse mapping, for example, all data of the UE, data of the UE with PDU session identity, or data of the UE with specific application identity. The UE can generate QoS rules for the corresponding data by itself according to the reverse mapping indication received from the SMF.

[0144] Based on the above various embodiments, Figure 2The terminal device receiving the reverse mapping indication of step S210 can include that the terminal device receives the reverse mapping indication from the SMF through signaling.

[0145] Optionally, the terminal device further receives a first range corresponding to the reverse mapping indication, and the first range can include at least one of the following:

[0146] All data of the terminal device;

[0147] Data of the terminal device with a PDU session identifier;

[0148] Data of the terminal device with a specific application identifier.

[0149] Optionally, Figure 2 Before step S210, the method can further include that the terminal device sends at least one of a reverse mapping request, a state of the terminal device and a type of the terminal device. Specifically, the terminal device can send at least one of the reverse mapping request, the state of the terminal device and the type of the terminal device to the AMF.

[0150] Optionally, the method can further include that the terminal device sends a second range corresponding to the reverse mapping request, and the second range includes at least one of the following:

[0151] All data of the terminal device;

[0152] Data of the terminal device with a specific PDU session identifier;

[0153] Data of the terminal device with a specific application identifier.

[0154] Optionally, the state of the terminal device includes that the terminal device is in a state of serving as a relay for a remote terminal device.

[0155] Optionally, the type of the terminal device includes a relay type.

[0156] Optionally, the terminal device sending the reverse mapping request includes that the terminal device sends the reverse mapping request when detecting or predicting signaling congestion.

[0157] The embodiments of the present application further provide a method for enabling a reverse mapping mechanism, Figure 4 is a schematic flow chart of a method 400 for enabling a reverse mapping mechanism according to the embodiments of the present application. The method can be optionally applied to Figure 1A and Figure 1B the system shown in the figure, such as the SMF in the system shown in the figure, but is not limited thereto. The method includes at least part of the following contents. Figure 1A

[0158] ​S410: The first network device sends the reverse mapping indication.

[0159] Optionally, the first network device comprises an SMF.

[0160] Optionally, the first network device sending the reverse mapping indication comprises: the first network device sending the reverse mapping indication to the terminal device.

[0161] Optionally, the first network device sending the reverse mapping indication to the terminal device comprises: the first network device sending a first range corresponding to the reverse mapping indication to the terminal device, the first range comprising at least one of:

[0162] all data of the terminal device;

[0163] data of the terminal device with a specific PDU session identifier;

[0164] data of the terminal device with a specific application identifier.

[0165] Optionally, the first network device sending the reverse mapping indication comprises: the first network device sending the reverse mapping indication of the terminal device to a UPF.

[0166] Optionally, the method further comprises: the first network device sending a third range corresponding to the reverse mapping indication to the UPF, the third range comprising at least one of:

[0167] all data of the terminal device;

[0168] data of the terminal device with specific service data flow information.

[0169] Optionally, the service data flow information comprises at least one of:

[0170] flow template information of service data;

[0171] service data flow identifier;

[0172] application identifier.

[0173] Optionally, the first network device sending the reverse mapping indication comprises:

[0174] the first network device receiving at least one of a reverse mapping request of the terminal device, a state of the terminal device, and a type of the terminal device;

[0175] the first network device sending at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device to a PCF;

[0176] the first network device receiving the reverse mapping indication from the PCF, and sending the reverse mapping indication.

[0177] Optionally, the first network device sends a reverse mapping indication, including:

[0178] The first network device receives at least one of the following: the reverse mapping request from the terminal device, the status of the terminal device, and the type of the terminal device, and enables the reverse mapping mechanism for the terminal device.

[0179] The first network device sends a reverse mapping instruction.

[0180] Optionally, the first network device sends a reverse mapping indication, including:

[0181] The first network device sends a reverse mapping request for the terminal device, the terminal device status, and the terminal device type to the PCF based on at least one of the terminal device status, the terminal device type, and the terminal device signaling load status.

[0182] The first network device receives the reverse mapping instruction from the PCF and then sends the reverse mapping instruction.

[0183] Optionally, the first network device sends a reverse mapping indication, including:

[0184] The first network device enables the reverse mapping mechanism for the terminal device based on at least one of the terminal device's status, terminal device type, and terminal device signaling load status.

[0185] The first network device sends a reverse mapping instruction.

[0186] Optionally, the first network device obtains the status and / or type of the terminal device from the UDM.

[0187] Optionally, the state of the aforementioned terminal device includes: the terminal device is in a relay state serving remote terminal devices.

[0188] Optionally, the types of the aforementioned terminal equipment include: relay type.

[0189] This application also proposes a method for enabling a reverse mapping mechanism. Figure 5 This is a schematic flowchart of a method 500 for enabling a reverse mapping mechanism according to an embodiment of this application. This method can optionally be applied to... Figure 1A and Figure 1B The system shown, if applied to Figure 1A The method includes, but is not limited to, the PCF in the system shown. It comprises at least a portion of the following:

[0190] S510: The second network device receives at least one of the following: the reverse mapping request of the terminal device, the status of the terminal device, and the type of the terminal device;

[0191] S520: The second network device enables the reverse mapping mechanism for the terminal device according to the received content.

[0192] S530: The second network device sends the reverse mapping indication.

[0193] Optionally, the second network device includes a PCF.

[0194] Optionally, the state of the terminal device includes that the terminal device is in a state of relaying service for a remote terminal device.

[0195] Optionally, the type of the terminal device includes a relay type.

[0196] Optionally, the method further includes that the second network device receives a fourth range corresponding to the reverse mapping indication, and the fourth range includes at least one of the following:

[0197] All data of the terminal device;

[0198] Data of the terminal device with a specific PDU session identifier;

[0199] Data of the terminal device with specific service data flow information.

[0200] Optionally, the service data flow information includes at least one of the following:

[0201] Flow template information of service data;

[0202] Service data flow identifier;

[0203] Application identifier.

[0204] Optionally, the first network device includes a PCF.

[0205] Optionally, the second network device receiving at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device includes that the second network device receives at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device from an AMF.

[0206] Optionally, the second network device receiving at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device includes that the second network device receives at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device from an SMF.

[0207] Optionally, the second network device sending the reverse mapping indication includes that the second network device sends the reverse mapping indication to an SMF.

[0208] The embodiments of the present application also propose a method for enabling a reverse mapping mechanism, Figure 6This is a schematic flowchart of a method 600 for enabling a reverse mapping mechanism according to an embodiment of this application. This method can optionally be applied to... Figure 1A and Figure 1B The system shown, if applied to Figure 1A The method includes, but is not limited to, the AMF in the system shown. It comprises at least a portion of the following:

[0209] S410: The third network device sends at least one of the following: the reverse mapping request of the terminal device, the status of the terminal device, and the type of the terminal device.

[0210] Optionally, the aforementioned third network device includes AMF.

[0211] Optionally, before step S410, the method further includes: the third network device receiving at least one of the following from the terminal device: a reverse mapping request, the status of the terminal device, and the type of the terminal device.

[0212] Optionally, it further includes: a third network device receiving a second range corresponding to the reverse mapping request from the terminal device, the second range including at least one of the following:

[0213] All data from the terminal device;

[0214] Data from the terminal device that has a specific PDU session identifier;

[0215] Data from terminal devices that has a specific application identifier.

[0216] Optionally, the third network device sending at least one of the following: a reverse mapping request, the status of the terminal device, and the type of the terminal device, includes:

[0217] The third network device sends a reverse mapping request for the terminal device, the terminal device's status, and the terminal device's type, based on at least one of the terminal device's status, terminal device type, and terminal device's signaling load status.

[0218] Optionally, the aforementioned third network device obtains the status and / or type of the terminal device from the UDM.

[0219] Optionally, the state of the aforementioned terminal device includes: the terminal device is in a relay state serving remote terminal devices.

[0220] Optionally, the types of the aforementioned terminal equipment include: relay type.

[0221] Optionally, the third network device sending at least one of the following: a reverse mapping request, the status of the terminal device, and the type of the terminal device, includes: the third network device sending at least one of the following: a reverse mapping request, the status of the terminal device, and the type of the terminal device to the SMF.

[0222] Optionally, the third network device sending the at least one of the reverse mapping request, the state of the terminal device and the type of the terminal device comprises: the third network device sending the at least one of the reverse mapping request, the state of the terminal device and the type of the terminal device to the PCF.

[0223] The embodiments of the present application further provide a terminal device, Figure 7 is a structural schematic diagram of a terminal device 700 according to the embodiments of the present application, comprising:

[0224] an indication receiving module 710, configured to receive a reverse mapping indication;

[0225] a rule generating module 720, configured to generate a QoS rule for corresponding data according to the reverse mapping indication.

[0226] Optionally, the indication receiving module 710 is configured to receive the reverse mapping indication from the SMF through signaling.

[0227] Optionally, the indication receiving module 710 is further configured to receive a first range corresponding to the reverse mapping indication, and the first range comprises at least one of:

[0228] all data of the terminal device;

[0229] data of the terminal device with a specific PDU session identifier;

[0230] data of the terminal device with a specific application identifier.

[0231] Figure 8 is a structural schematic diagram of a terminal device 800 according to the embodiments of the present application, as Figure 8 indicated, the terminal device can further comprise:

[0232] a first sending module 830, configured to send the at least one of the reverse mapping request, the state of the terminal device and the type of the terminal device.

[0233] Optionally, the first sending module 830 is further configured to send a second range corresponding to the reverse mapping request, and the second range comprises at least one of:

[0234] all data of the terminal device;

[0235] data of the terminal device with a specific PDU session identifier;

[0236] data of the terminal device with a specific application identifier.

[0237] Optionally, the state of the terminal device comprises: the terminal device is in a state of serving as a relay for a remote terminal device.

[0238] Optionally, the type of the terminal device includes a relay type.

[0239] Optionally, the first sending module 830 is configured to send a reverse mapping request in a case where signaling congestion is detected or predicted.

[0240] Optionally, the first sending module 830 is configured to send, to the AMF, at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device.

[0241] It should be understood that the above and other operations and / or functions of the modules in the terminal device according to the embodiments of the present application are respectively for implementing the corresponding procedures of the terminal device in the method 200, and for brevity, will not be repeated here. Figure 2

[0242] The embodiments of the present application also propose a network device, Figure 9 is a structural schematic diagram of a network device 900 according to the embodiments of the present application, comprising:

[0243] The first indication module 910 is configured to send a reverse mapping indication.

[0244] Optionally, the first indication module 910 is configured to send the reverse mapping indication to the terminal device.

[0245] Optionally, the first indication module 910 is further configured to send, to the terminal device, a first range corresponding to the reverse mapping indication, the first range including at least one of:

[0246] all data of the terminal device;

[0247] data of the terminal device having a specific PDU session identifier;

[0248] data of the terminal device having a specific application identifier.

[0249] Optionally, the first indication module 910 is configured to send, to the UPF, the reverse mapping indication of the terminal device.

[0250] Optionally, the first indication module 910 is further configured to send, to the UPF, a third range corresponding to the reverse mapping indication, the third range including at least one of:

[0251] all data of the terminal device;

[0252] data of the terminal device having specific service data flow information.

[0253] Optionally, the service data flow information includes at least one of:

[0254] flow template information of the service data; ​

[0255] service data flow identifier;

[0256] application identifier.

[0257] Optionally, the first indication module 910 is configured to:

[0258] receive at least one of a reverse mapping request of the terminal device, a state of the terminal device, and a type of the terminal device;

[0259] send the at least one of the reverse mapping request of the terminal device, the state of the terminal device, and the type of the terminal device to the PCF;

[0260] receive a reverse mapping indication from the PCF, and send the reverse mapping indication.

[0261] Optionally, the first indication module 910 is configured to:

[0262] receive at least one of a reverse mapping request of the terminal device, a state of the terminal device, and a type of the terminal device, and enable a reverse mapping mechanism for the terminal device according to at least one of the state of the terminal device, the type of the terminal device, and a signaling load status of the terminal device;

[0263] send a reverse mapping indication.

[0264] Optionally, the first indication module 910 is configured to:

[0265] send at least one of a reverse mapping request of the terminal device, a state of the terminal device, and a type of the terminal device to the PCF according to at least one of the state of the terminal device, the type of the terminal device, and a signaling load status of the terminal device;

[0266] receive a reverse mapping indication from the PCF, and send the reverse mapping indication.

[0267] Optionally, the first indication module 910 is configured to:

[0268] enable a reverse mapping mechanism for the terminal device according to at least one of a state of the terminal device, a type of the terminal device, and a signaling load status of the terminal device;

[0269] send a reverse mapping indication.

[0270] Optionally, the first indication module 910 obtains the state of the terminal device and / or the type of the terminal device from a UDM.

[0271] Optionally, the state of the terminal device includes that the terminal device is in a state of serving a remote terminal device as a relay.

[0272] Optionally, the type of the terminal device includes a relay type.

[0273] Optionally, the network device includes an SMF.

[0274] It should be understood that the above and other operations and / or functions of the modules in the network device according to the embodiments of the present application are respectively for implementing the corresponding procedures of the first network device in the method 400, and for brevity, will not be repeated here. Figure 4 The above and other operations and / or functions of the modules in the network device according to the embodiments of the present application are respectively for implementing the corresponding procedures of the first network device in the method 400, and for brevity, will not be repeated here.

[0275] The embodiments of the present application also propose a network device, Figure 10 is a structural schematic diagram of the network device 1000 according to the embodiments of the present application, comprising:

[0276] The request receiving module 1010 is configured to receive at least one of a reverse mapping request of a terminal device, a state of the terminal device, and a type of the terminal device.

[0277] The enabling module 1020 is configured to enable a reverse mapping mechanism for the terminal device according to the received content.

[0278] The second indication module 1030 is configured to send a reverse mapping indication.

[0279] Optionally, the state of the terminal device includes that the terminal device is in a state of relaying service for a remote terminal device.

[0280] Optionally, the type of the terminal device includes a relay type.

[0281] Optionally, the request receiving module 1010 is further configured to receive a fourth range corresponding to the reverse mapping request, and the fourth range includes at least one of:

[0282] All data of the terminal device;

[0283] Data of the terminal device with a specific PDU session identifier;

[0284] Data of the terminal device with specific service data flow information.

[0285] Optionally, the service data flow information includes at least one of:

[0286] Flow template information of service data;

[0287] Service data flow identifier;

[0288] Application identifier.

[0289] Optionally, the network device includes a PCF.

[0290] Optionally, the request receiving module 1010 receives at least one of the reverse mapping request, the state of the terminal device, and the type of the terminal device from an AMF.

[0291] Optionally, the request receiving module 1010 receives at least one of a reverse mapping request, a state of the terminal device, and a type of the terminal device from the SMF.

[0292] Optionally, the second indication module 1030 sends a reverse mapping indication to the SMF.

[0293] It should be understood that the above and other operations and / or functions of the modules in the terminal device according to the embodiments of the present application are respectively for implementing the corresponding procedures of the second network device in the method 500, and for brevity, will not be repeated here. Figure 5

[0294] The embodiments of the present application also propose a network device, Figure 6 is a structural schematic diagram of a network device 1100 according to the embodiments of the present application, which comprises:

[0295] The second sending module 1110 is configured to send at least one of a reverse mapping request of the terminal device, a state of the terminal device, and a type of the terminal device.

[0296] Figure 12 is a structural schematic diagram of a terminal device 1200 according to the embodiments of the present application, as Figure 12 indicated above, the network device can further comprise:

[0297] The first receiving module 1220 is configured to receive at least one of a reverse mapping request, a state of the terminal device, and a type of the terminal device from the terminal device.

[0298] Optionally, the first receiving module 1220 is further configured to receive, from the terminal device, a second range corresponding to the reverse mapping request, the second range comprising at least one of:

[0299] all data of the terminal device;

[0300] data of the terminal device with a specific PDU session identifier;

[0301] data of the terminal device with a specific application identifier.

[0302] Optionally, the second sending module 1110 is configured to send at least one of the reverse mapping request of the terminal device, the state of the terminal device, and the type of the terminal device according to at least one of the state of the terminal device, the type of the terminal device, and a signaling load status of the terminal device.

[0303] Optionally, the second sending module 1110 obtains the state of the terminal device and / or the type of the terminal device from the UDM.

[0304] Optionally, the state of the terminal device comprises a state in which the terminal device is a relay serving a remote terminal device.​

[0305] Optionally, the types of the aforementioned terminal equipment include: relay type.

[0306] Optionally, the aforementioned network equipment includes AMF.

[0307] Optionally, the second sending module 1110 sends at least one of the following to the SMF: a reverse mapping request, the status of the terminal device, and the type of the terminal device.

[0308] Optionally, the second sending module sends at least one of the following to the PCF: a reverse mapping request, the status of the terminal device, and the type of the terminal device.

[0309] It should be understood that the above and other operations and / or functions of the modules in the terminal device according to the embodiments of this application are respectively for implementing Figure 6 The corresponding procedures for the third network device in Method 600 are omitted here for the sake of brevity.

[0310] Figure 13 This is a schematic structural diagram of a communication device 1300 according to an embodiment of this application. Figure 13 The communication device 1300 shown includes a processor 1310, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0311] Optionally, such as Figure 13 As shown, the communication device 1300 may further include a memory 1320. The processor 1310 can retrieve and run computer programs from the memory 1320 to implement the methods described in this embodiment.

[0312] The memory 1320 can be a separate device independent of the processor 1310, or it can be integrated into the processor 1310.

[0313] Optionally, such as Figure 13 As shown, the communication device 1300 may also include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0314] The transceiver 1330 may include a transmitter and a receiver. The transceiver 1330 may further include an antenna, and the number of antennas may be one or more.

[0315] Optionally, the communication device 1300 may be a terminal device in the embodiments of this application, and the communication device 1300 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0316] Optionally, the communication device 1300 can be a network device of the embodiments of the present application, and the communication device 1300 can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the network device. For brevity, details are not repeated here.

[0317] Figure 14 is a schematic structural diagram of a chip 1400 according to the embodiments of the present application. Figure 14 The chip 1400 shown includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0318] Optionally, as shown, the chip 1400 can also include a memory 1420. Among them, the processor 1410 can call and run a computer program from the memory 1420 to implement the method in the embodiments of the present application. Figure 14 Among them, the memory 1420 can be a separate device independent of the processor 1410, or can be integrated in the processor 1410.

[0319] Optionally, the chip 1400 can also include an input interface 1430. Among them, the processor 1410 can control the input interface 1430 to communicate with other devices or chips, and specifically, information or data sent by other devices or chips can be obtained.

[0320] Optionally, the chip 1400 can also include an output interface 1440. Among them, the processor 1410 can control the output interface 1440 to communicate with other devices or chips, and specifically, information or data can be output to other devices or chips.

[0321] Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the terminal device. For brevity, details are not repeated here.

[0322] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes in the various methods of the embodiments of the present application implemented by the network device. For brevity, details are not repeated here.

[0323] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.

[0324]

[0325] ​The processors mentioned above can be general-purpose processors, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processors mentioned above can be microprocessors or any conventional processor.

[0326] The aforementioned memory can be volatile memory or non-volatile memory, or a combination of both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM).

[0327] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0328] In the above embodiments, all or part of the processes can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the processes can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions generate all or part of the processes or functions described in the embodiments of the present application. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. containing one or more available media sets. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, solid state disk (SSD)), etc.

[0329] It should be understood that the size of the sequence number of each process described above in various embodiments of the present application does not mean the order of execution, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0330] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0331] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for enabling a reverse mapping mechanism, comprising: When a terminal device detects or predicts signaling congestion, it sends a reverse mapping request. The terminal device sends a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier; The terminal device receives a reverse mapping instruction; The terminal device generates Quality of Service (QoS) rules for the corresponding data based on the reverse mapping instruction.

2. The method according to claim 1, wherein the terminal device receives the reverse mapping instruction, comprising: The terminal device receives the reverse mapping instruction from the Session Management Function (SMF) via signaling.

3. The method according to claim 1, wherein the state of the terminal device includes: The terminal device is in a relay state serving remote terminal devices.

4. The method according to claim 1, wherein the type of the terminal device includes: Relay type.

5. A method for enabling a reverse mapping mechanism, comprising: The first network device receives a reverse mapping request sent by the terminal device when it detects or predicts signaling congestion, and a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier. The first network device sends a reverse mapping instruction.

6. The method according to claim 5, wherein the first network device sends a reverse mapping indication, comprising: The first network device sends a reverse mapping instruction to the terminal device.

7. The method according to claim 5, wherein the first network device sends a reverse mapping indication, comprising: The first network device sends a reverse mapping instruction for the terminal device to the User Plane Function (UPF).

8. The method according to any one of claims 5 to 7, wherein the first network device sends a reverse mapping indication, comprising: The first network device enables a reverse mapping mechanism for the terminal device; The first network device sends a reverse mapping instruction.

9. The method according to any one of claims 5 to 7, wherein the first network device sends a reverse mapping indication, comprising: The first network device sends at least one of the terminal device's status and type to the PCF based on at least one of the terminal device's status, terminal device type, and terminal device signaling load status. The first network device receives a reverse mapping indication from the PCF and sends the reverse mapping indication.

10. The method according to any one of claims 5 to 7, wherein the first network device sends a reverse mapping indication, comprising: The first network device enables a reverse mapping mechanism for the terminal device based on at least one of the terminal device's status, terminal device type, and terminal device signaling load status. The first network device sends a reverse mapping instruction.

11. The method according to claim 9, wherein the first network device obtains the status of the terminal device and / or the type of the terminal device from the unified data management function UDM.

12. The method according to any one of claims 5 to 7, wherein the first network device comprises an SMF.

13. A method for enabling a reverse mapping mechanism, comprising: The second network device receives a reverse mapping request sent by the terminal device when it detects or predicts signaling congestion, and a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier. The second network device enables a reverse mapping mechanism for the terminal device based on the received content; The second network device sends a reverse mapping instruction.

14. The method of claim 13, wherein the second network device includes a PCF.

15. The method of claim 13, wherein the second network device sends a reverse mapping indication, comprising: The second network device sends the reverse mapping instruction to the SMF.

16. A terminal device, comprising: A first sending module is configured to send a reverse mapping request when signaling congestion is detected or predicted, and to send a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier; Instruction receiving module, used to receive reverse mapping indication; The rule generation module is used to generate Quality of Service (QoS) rules for the corresponding data based on the reverse mapping indication.

17. The terminal device according to claim 16, wherein the indication receiving module is configured to receive the reverse mapping indication from the SMF via signaling.

18. The terminal device according to claim 16, wherein the state of the terminal device includes: The terminal device is in a relay state serving remote terminal devices.

19. The terminal device according to claim 16, wherein the type of the terminal device includes: Relay type.

20. A network device, comprising: The first indication module is configured to receive a reverse mapping request sent by the terminal device when it detects or predicts signaling congestion, and a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier; The first indication module is also used to send a reverse mapping indication.

21. The network device according to claim 20, wherein the first indication module is configured to send a reverse mapping indication to the terminal device.

22. The network device according to claim 20, wherein the first indication module is configured to send a reverse mapping indication of the terminal device to the UPF.

23. The network device according to any one of claims 20 to 22, wherein the first indication module is configured to: Enable the reverse mapping mechanism for the terminal device; Send a reverse mapping instruction.

24. The network device according to any one of claims 20 to 22, wherein the first indication module is configured to: Based on at least one of the terminal device's status, terminal device type, and terminal device signaling load status, send at least one of the terminal device's status and terminal device type to the PCF; Receive a reverse mapping instruction from the PCF and send the reverse mapping instruction.

25. The network device according to any one of claims 20 to 22, wherein the first indication module is configured to: The reverse mapping mechanism is enabled for the terminal device based on at least one of the terminal device status, terminal device type, and terminal device signaling load status. Send a reverse mapping instruction.

26. The network device according to claim 24, wherein the first indication module obtains the status of the terminal device and / or the type of the terminal device from the UDM.

27. The network device according to any one of claims 20 to 22, wherein the network device includes an SMF.

28. A network device, comprising: The request receiving module is configured to receive a reverse mapping request sent by the terminal device when signaling congestion is detected or predicted, and a second range corresponding to the reverse mapping request, wherein the second range includes data of the terminal device with a specific application identifier; An enabling module is used to enable a reverse mapping mechanism for the terminal device based on the received content. The second instruction module is used to send the reverse mapping instruction.

29. The network device of claim 28, wherein the network device includes a PCF.

30. The network device according to claim 28, wherein the second indication module sends the reverse mapping indication to the SMF.

31. A terminal device, comprising: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 1 to 4.

32. A network device, comprising: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 5 to 15.

33. A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 4.

34. A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 5 to 15.

35. A computer-readable storage medium for storing a computer program that causes a computer to perform the method as described in any one of claims 1 to 4.

36. A computer-readable storage medium for storing a computer program that causes a computer to perform the method as described in any one of claims 5 to 15.

37. A computer program product comprising computer program instructions that cause a computer to perform the method as described in any one of claims 1 to 4.

38. A computer program product comprising computer program instructions that cause a computer to perform the method as described in any one of claims 5 to 15.

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