WO2019085970A1 - 通信方法、网元、终端装置和*** - Google Patents
通信方法、网元、终端装置和*** Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
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- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
- H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information
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Definitions
- the present application relates to the field of communications and, more particularly, to communication methods, network elements, terminal devices and systems.
- the interworking network architecture may include a 5G system and an Evolved Packet System (EPS), and a communication interface exists between the 5G system and the EPS system for interoperation between the communication systems.
- EPS Evolved Packet System
- the network can establish a context in multiple communication systems for the terminal at the same time, for example, establishing a context in the 5G system and establishing a context in the EPS system.
- the context that may be established in a certain communication system is not used, so establishing a context for multiple communication systems will reduce the utilization of communication resources and increase system overhead.
- the present application provides a communication method, a network element, a terminal device, and a system, which can improve communication efficiency.
- a communication method including: receiving, by a first network element, first indication information from a second network element, where the first indication information is used to indicate that a current condition supports establishing a session of the first network for the terminal device; After receiving the first indication information, the first network element acquires first quality of service QoS control information of the first session of the terminal device, where the first session is that the terminal device passes the second network Establishing a session; the first network element sending the first QoS control information to the second network element.
- the first session may be established while establishing the second network session of the first session, if the condition indicated by the first indication information is met.
- the session of the first network can determine the session of the first network establishing the first session according to the current condition, avoiding establishing an unnecessary session of the first network, and improving communication efficiency.
- the first indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first network element determines, according to the first information included in the first indication information, the first quality of service QoS control information of the first session of the terminal device of the first network, so as to be determined according to the first indication information. Establishing a session of the first network avoids establishing an unnecessary first network session and improves communication efficiency.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the content of the first information is implicitly indicated by carrying the default bearer identifier of the first network of the terminal device in the first information, thereby saving overhead.
- the first indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the first indication information includes the first information and the second information, and may establish the first time while establishing the second network session of the first session, if the condition indicated by the first indication information is met.
- the session of the first network of the session avoids establishing an unnecessary session of the first network and improves communication efficiency.
- the method further includes: the first network element acquiring third information, where the third information is used to indicate that the attribute of the first session is to ensure continuity; After the first indication information, the first network element acquires the first QoS control information of the terminal device, including: after acquiring the first indication information and the third information, the first network element acquiring The first QoS control information is described.
- the first network of the first session may be established while establishing the second network session of the first session, if the network requirement indicated by the first indication information and the condition indicated by the third information are met.
- the session avoids the establishment of unnecessary first network sessions and improves communication efficiency.
- the acquiring, by the first network element, the first QoS control information of the terminal device includes: sending, by the first network element, subscription data acquisition of the first session to a third network element a request message, the subscription data acquisition request message includes fourth information, the fourth information is used to request to provide subscription data of the first network, and the first network element receives the first information from the third network element a contracted data response message of a session, the subscription data response message including second QoS control information, wherein the second QoS control information is subscription data of the first network provided by the fourth information request.
- the acquiring, by the first network element, the first QoS control information according to the second QoS control information includes: determining, by the first network element, the second QoS control information The first QoS control information; or the first network element sends the second QoS control information to a policy control network element; the first network element receives the first QoS from the policy control network element Control information, wherein the first QoS control information is based on the second QoS control information, and the first QoS control information is information authorized by the policy control network element.
- the fourth information includes an access point name APN of the first network.
- the acquiring, by the first network element, the first QoS control information of the terminal device includes: the first network element receiving the first QoS control information from the policy control network element Wherein the first QoS control information is authorized.
- the method further includes: the first network element sends a setup request message of the first session to a policy control network element, where the setup request message of the first session includes a fifth information.
- the fifth information is used to indicate that the policy control network element establishes a session of the first network; the first network element receives the first QoS control information from the policy control network element, including: The first network element receives the setup response message of the first session from the policy control network element, where the setup response message of the first session includes the first QoS control information.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the first network element receives the first indication information from the second network element, where the first network element receives the management request of the first session from the second network element.
- the message that the management request message of the first session includes the first indication information.
- the first QoS control information is carried in a first session management message, where the first session management message is used to indicate to modify or establish QoS control in the first network of the terminal device. information.
- the second aspect provides a communication method, including: sending, by the second network element, the first indication information to the first network element, where the first indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device; Receiving, by the second network element, the first quality of service QoS control information of the first session of the terminal device from the first network element, where the first session is a session established by the terminal device through the second network .
- the first session may be established while establishing the second network session of the first session, if the condition indicated by the first indication information is met.
- the session of the first network can determine the session of the first network establishing the first session according to the current condition, avoiding establishing an unnecessary session of the first network, and improving communication efficiency.
- the method further includes: the second network element receives the second indication information from the terminal device, where the second indication information is used to indicate that the current condition supports establishing the first network for the terminal device.
- the second network element determines the first indication information according to the second indication information.
- the first indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the first indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the sending, by the second network element, the first indication information to the first network element the second network element sending the management request of the first session to the first network element
- the message that the management request message of the first session includes the first indication information.
- the third aspect provides a communication method, including: the terminal device sends the second indication information to the second network element, where the second indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device; The terminal device receives first quality of service QoS control information of the first session of the terminal device, where the first session is a session established by the terminal device through the second network.
- the terminal device sends the second indication information to the second network element to indicate that the current condition supports establishing a session of the first network for the terminal device, so that the second network element determines the first indication according to the second indication information.
- the information can be configured to enable the network side to determine the session of the first network that establishes the first session according to the current condition, thereby avoiding establishing an unnecessary session of the first network, and improving communication efficiency.
- the second indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the second indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the first QoS control information is carried in a second session management message, where the second session management message is used to indicate to modify or establish QoS control in the first network of the terminal device. information.
- the fourth aspect provides a network element, including: a receiving unit, configured to receive first indication information from a second network element, where the first indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device.
- Obtaining unit configured to acquire first quality of service QoS control information of the first session of the terminal device after receiving the first indication information, where the first session is that the terminal device passes the second network
- the sending unit is configured to send the first QoS control information to the second network element.
- the first indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the first indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the acquiring unit is further configured to acquire third information, where the third information is used to indicate that the attribute of the first session is to ensure continuity; After obtaining the first QoS control information of the terminal device, the acquiring unit is configured to acquire the first QoS control information after acquiring the first indication information and the third information.
- the acquiring unit is specifically configured to send, by the third network element, a subscription data acquisition request message of the first session, in the acquiring the first QoS control information of the terminal device, where
- the subscription data acquisition request message includes fourth information, the fourth information is used to request to provide subscription data of the first network, and the subscription data response message of the first session is received from the third network element,
- the subscription data response message includes second QoS control information for the first network, wherein the subscription data of the first network is provided for the fourth information request.
- the acquiring unit is specifically configured to determine, according to the second QoS control information, the first QoS control information, First QoS control information; or transmitting the second QoS control information to a policy control network element; and receiving the first QoS control information from the policy control network element, wherein the first QoS control information is based on
- the second QoS control information is information that is authorized by the policy control network element.
- the fourth information includes an access point name APN of the first network.
- the acquiring unit is specifically configured to receive the first QoS control information from the policy control network element, where the acquiring the first QoS control information of the terminal device, where The first QoS control information is information that the policy controls network element authorization.
- the sending unit is further configured to send, to the policy control network element, the setup request message of the first session, where the setup request message of the first session includes fifth information, where the fifth The information is used to indicate that the policy control network element establishes a session of the first network; in the receiving the first QoS control information from the policy control network element, the acquiring unit is specifically configured to use the policy The control network element receives the setup response message of the first session, where the setup response message of the first session includes the first QoS control information.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the receiving unit is configured to receive, by the second network element, a management request message of the first session, where the first indication information is received from the second network element, where The management request message of a session includes the first indication information.
- the first QoS control information is carried in a first session management message, where the first session management message is used to indicate to modify or establish QoS control in the first network of the terminal device. information.
- the fifth aspect provides a network element, including: a sending unit, configured to send first indication information to the first network element, where the first indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device. a receiving unit, configured to receive first quality of service QoS control information of the first session of the terminal device from the first network element, where the first session is a session established by the terminal device through a second network .
- the receiving unit is further configured to receive, by the terminal device, the second indication information, where the second indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device;
- the element further includes a determining unit, and the determining unit is configured to determine the first indication information according to the second indication information.
- the first indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the first indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the sending unit is specifically configured to send, to the first network element, a management request message of the first session, in the sending the first indication information to the first network element, where The management request message of the first session includes the first indication information.
- the first QoS control information is carried in a first session management message, where the first session management message is used to indicate to modify or establish QoS control in the first network of the terminal device. information.
- the sixth aspect provides a terminal device, including: a sending unit, configured to send second indication information to a second network element, where the second indication information is used to indicate that the current condition supports establishing a first network for the terminal device. a receiving unit, configured to receive first quality of service QoS control information of the first session of the terminal device, where the first session is a session established by the terminal device through the second network.
- the second indication information includes first information, where the first information is used to indicate that the current condition is a mobility management entity of the second network and the first network. There is a communication interface between the mobility management entities.
- the first information includes a default bearer identifier of the first network of the terminal device.
- the second indication information further includes second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- the first QoS control information includes at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the first QoS control information is carried in a second session management message, where the second session management message is used to indicate to modify or establish QoS control in the first network of the terminal device. information.
- the seventh aspect provides a communication system, which includes the network element according to the fourth aspect and the fifth aspect.
- the communication system may further include the terminal device according to the sixth aspect.
- a network element comprising: a communication interface, a memory, a processor, and a bus system.
- the communication interface, the memory and the processor are connected by the bus system, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the communication interface to receive signals and/or transmit signals, and When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
- a network element comprising: a communication interface, a memory, a processor, and a bus system.
- the communication interface, the memory and the processor are connected by the bus system, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the communication interface to receive signals and/or transmit signals, and When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
- a terminal device comprising: a communication interface, a memory, a processor, and a bus system.
- the communication interface, the memory and the processor are connected by the bus system, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the communication interface to receive signals and/or transmit signals, and
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.
- a communication system comprising the network element according to the eighth aspect, the ninth aspect, and optionally the terminal system.
- a twelfth aspect a computer readable medium for storing a computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
- a thirteenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the second aspect or any of the possible implementations of the second aspect.
- a fourteenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the third or third aspect of the third aspect.
- FIG. 1 is a schematic diagram of a possible application environment of an embodiment of the present application.
- FIG. 2 is a schematic diagram of a possible application environment of still another embodiment of the present application.
- FIG. 3 is a schematic diagram of a possible application environment of still another embodiment of the present application.
- FIG. 4 is a schematic flowchart diagram of a communication method according to an embodiment of the present application.
- FIG. 5 is a schematic diagram of interaction of a communication method according to another embodiment of the present application.
- FIG. 6 is a schematic diagram of interaction of a communication method according to another embodiment of the present application.
- FIG. 7 is a schematic diagram of interaction of a communication method according to another embodiment of the present application.
- FIG. 8 is a schematic diagram of interaction of a communication method according to another embodiment of the present application.
- FIG. 9 is a schematic structural diagram of a network element according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a network element according to another embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- FIG. 12 is a schematic structural diagram of a network element according to another embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a network element according to another embodiment of the present application.
- FIG. 14 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- Evolved Packet System Evolved Packet System, EPS
- 5G 5th Generation
- NR New Radio
- the terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber 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 User device.
- the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- the base station in this embodiment of the present application may be a device for communicating with a terminal device, which may be in a Global System of Mobile communication (GSM) system or in Code Division Multiple Access (CDMA).
- Base station Base Transceiver Station, BTS
- BTS Base Transceiver Station
- NodeB, NB base station
- WCDMA Wideband Code Division Multiple Access
- Evolutional NodeB evolved base station
- the eNB or the eNodeB may also be a wireless controller in a cloud radio access network (CRAN) scenario, and the embodiment of the present application is not limited.
- CRAN cloud radio access network
- the network element in the embodiment of the present application may include a network device in a 5G system architecture and/or a 4G system architecture.
- the 4G system architecture may include an EPS system architecture.
- the network element may include an Access and Mobility Management Function (AMF) entity, a Mobility Management Entity (MME), a Session Management Function (SMF) entity, and a unified data management.
- AMF Access and Mobility Management Function
- MME Mobility Management Entity
- SMF Session Management Function
- UDM Unified Data Management
- PCF Policy Control Function
- PCF Policy and Charging Rule Function
- PDN Packet Data Network
- PDU Packet Data Unit
- PDU Packet Data Unit
- PGW-C PDN Gateway-Control Plane
- PGW-User plane PDN Gateway-User plane
- HSS Home Subscriber Server
- AF Application Function
- QoS flow The minimum QoS forwarding processing granularity in a 5G system. All services mapped to the same QoS flow receive the same forwarding processing, such as packet loss rate and packet delay budget. Different QoS forwarding processes require different 5G QoS flows.
- FIG. 1 shows an interworking architecture 100 between a 5G system and an EPS system in a non-roaming scenario.
- Figure 2 illustrates an interworking architecture 200 for a 5G system and an EPS system in a local breakout roaming scenario.
- 3 shows an interworking architecture 300 between a 5G system and an EPS system in a home-route or home-routed roaming scenario.
- a first interface in order to support the interworking of the 5G system and the EPS system, a first interface is introduced.
- the first interface refers to a communication interface between a mobility management entity of the 5G system and a mobility management entity of the EPS system.
- the mobility management entity of the 5G system may be an AMF
- the mobility management entity of the EPS system may be an MME.
- the foregoing first interface may be represented by an N26 interface.
- the interworking architecture can support switching between 5G and EPS systems. It should be noted that, in the interworking architecture, the support for the N26 interface is optional. Only in the interworking network supporting the N26 interface can the switching process be used to ensure service continuity.
- the network element in the EPS system and the network element in the 5G system may be included.
- Some of the modules in architectures 100-300 include the functionality of network elements in the EPS system and network elements in the 5G system.
- HSS+UDM module, PCF+PDRF module, SMF+PGW-C module, UPF+PGW-U module, the modules and communication interfaces involved in architecture 100-300 are described below.
- UPF+PGW-U module used for transmission and management of user data.
- this module can be used for both EPS data transmission and 5G data transmission.
- SMF+PGW-C module used for session establishment, deletion and modification management.
- this module can not only provide EPS session management functions, but also provide 5G session management functions.
- PCF+PCRF module used in the policy and charging control entity.
- the module can provide EPS policy and charging control for terminal devices, and provide 5G policy and charging control.
- HSS+UDM module used to store subscription data of a user.
- the module stores both the subscription information of the EPS of the terminal device and the subscription information of the 5G of the terminal device.
- 5G radio access network Provides a wireless air interface for the terminal device to access the core network to obtain the corresponding service.
- Application Function (Application Function, AF), interacts with the core network to provide services or services, supports access capability open functions, interacts with the policy architecture, and provides application information.
- AF Application Function
- N5 interface An interface between the PCF and the AF.
- the AF directly interacts with the PCF to transmit information related to the service.
- NEF Network Exposure Function
- Pnt interface An interface between the PCF and the NEF for the interaction between the NEF and the PCF.
- Third-party AF can interact with PCF through NEF.
- An evolved universal terrestrial radio access network (E-UTRAN) is used for radio resource management to establish, modify, or delete air interface resources for a terminal device. Provides transmission of data and signaling to the terminal device, and the like.
- AMF module for user access and mobility management, mainly including user registration management, reachability management mobility management, paging management, access authentication, and encryption and integrity protection for authorized non-access layer signaling. Wait.
- MME module Mobility management for users. For example, it mainly includes user attachment management, reachability management, mobility management, paging management, access authentication, and encryption and integrity protection for authorizing non-access stratum signaling.
- SGW module the gateway of the user plane, and the user plane endpoint of E-UTRAN.
- SGW module the gateway of the user plane, and the user plane endpoint of E-UTRAN.
- S1-MME interface A control plane interface between the MME and the E-UTRAN.
- S1-U interface User plane interface between S-GW and E-UTRAN.
- S5-U interface A user plane interface between the SGW and the PGW-U for transmitting user plane data of the UE.
- the S5-C interface is a control plane management interface between the SGW and the PGW-U, and is used to establish an SGW and a PGW-U user plane connection for the UE.
- S6a interface An interface between the MME and the HSS, configured to acquire subscription data of the user and perform authentication and authorization functions for the UE.
- S11 interface An interface between the SGW and the MME, used to establish a bearer of the user plane.
- N1 interface interface between the UE and the AMF, signaling management and transmission of the user non-access stratum.
- N2 interface (R) The interface between AN and AMF for signaling transmission.
- N3 interface A direct interface between UPF and (R)AN for transmitting user data.
- N4 interface An interface between the SMF and the UPF to establish a transmission channel for the user plane.
- N7 interface An interface between the SMF and the PCF. It is used to formulate and deliver policy control and accounting information.
- N8 interface An interface between the AMF and the UDM, which is used to obtain the mobility related subscription information of the user.
- N10 interface An interface between the SMF and the UDM. It is used to obtain the session management related subscription information of the user.
- N11 interface An interface between SMF and AMF for the transmission of session management information.
- N15 interface An interface between AMF and PCF for obtaining access and mobility related policy information.
- h-PCF+h-PCRF indicates the policy control body that supports interworking in the home network or the home network. It supports both 4G policy and charging control functions, and 5G policy and charging control functions.
- the S9/N15 interface represents the interface between the home network or the PCF in the home network.
- v-PCF+v-PCRF indicates the policy control body that supports interworking in the roaming network or the visited network. It supports both 4G policy and charging control functions, and 5G policy and charging control functions.
- v-SMF represents the SMF in the roaming network.
- v-PCF represents a PCF in a roaming network.
- HPLMN in FIGS. 2 and 3 represents a local network
- the VPLMN represents an access network or a roaming network.
- HPLMN stands for public land mobile network (HPLMN)
- VPLMN stands for visit or roaming PLMN.
- the terminal device may access the EPS system by using a Tracking Area Update (TAU).
- TAU Tracking Area Update
- the switching process between the 5G system and the EPS system mainly includes the following two methods: First, mobility management/session management during the interoperation of the 5G system and the EPS system (Mobility Management) /Session Management, MM/SM) Context mapping. Second, support the solution of reconstructing the MM/SM context during EPS and 5G handover.
- the process of the 5G system switching to the EPS system specifically includes: establishing an EPS QoS parameter and an EPS bearer identifier (ID) when establishing a 5G QoS flow in the 5G network.
- the establishing the EPS QoS parameter and the EPS bearer identifier includes: establishing a default EPS bearer corresponding to the QoS of the 5G default rule; and further comprising: establishing a corresponding corresponding to the 5G Guaranteed Bit Rate (GBR) QoS flow.
- GBR Guaranteed Bit Rate
- the embodiment of the present application is based on the interworking architecture of the 5G system and the EPS system, and proposes a communication method, which can establish a session of the EPS system while establishing a 5G system session according to the network requirement, thereby being able to determine whether to establish an EPS session according to current conditions. , avoiding the establishment of unnecessary EPS sessions and improving communication efficiency.
- the communication method of the embodiment of the present application will be described below with reference to FIG. 4.
- the method 400 of FIG. 4 can be applied to any of the architectures of FIGS. 1-3.
- the method of Figure 4 can be applied to other similar architectures as well.
- the first network may include an EPS system network or a 4G system network
- the second network may include a 5G system network.
- the first network element may be an SMF or an entity having SMF functionality.
- it may be an SMF+PGW-C module in the architecture 100-300
- the second network element may be an AMF or an AMF-capable entity.
- the third network element may be a UDM or an entity having UDM functionality, such as may be an HSS+UDM module in architecture 100-300.
- the policy control network element may be a PCF or an entity having a PCF function, such as a PCF+PCRF module in the architecture 100-300.
- Method 400 includes:
- the second network element sends the first indication information to the first network element, and the first network element receives the first indication information from the second network element, where the first indication information is used by the first network element.
- the foregoing current condition supports establishing a session of the first network for the terminal device, and may include: an N26 interface exists between the 5G system and the EPS system in the current network. In other words, there is a communication interface between the AMF in the 5G system and the MME in the EPS system.
- the foregoing current condition supports establishing a session of the first network for the terminal device, and may further include: the terminal device is in a single registration state.
- the first indication information may include first information, and the first information may indicate, in an explicit or implicit manner, that the current condition supports establishing a session of the first network for the terminal device.
- the first information may directly indicate that the mobility management entity of the second network has a communication interface with the mobility management entity of the first network.
- the first information is used to indicate that the current network supports the N26 interface between the AMF and the MME, or that the 5G network supports interworking with the 4G network.
- the first information may be a default bearer identifier of the first network of the terminal device, and the bearer identifier of the first network of the terminal device may be used to implicitly indicate that the current condition supports establishing the first device for the terminal device. Network session.
- the bearer identifier of the first network may be a dedicated bearer identifier of the first network, or may be a default bearer identifier of the first network.
- the default bearer identifier of the first network may be an EPS default bearer identifier of the terminal device
- the dedicated bearer identifier of the first network may be an EPS dedicated bearer identifier of the terminal device.
- the first network element determines, according to the first information included in the first indication information, the first quality of service QoS control information of the first session of the terminal device that needs to acquire the first network, so that the first indication information is obtained according to the first indication information. Determining the establishment of the session of the first network avoids establishing an unnecessary first network session and improves communication efficiency.
- the content of the first information is implicitly indicated by carrying the default bearer identifier of the first network of the terminal device in the first information, thereby saving overhead.
- the current condition supports the establishment of the session of the first network for the terminal device, and may further include: the terminal device is in a single registration state.
- the terminal device is in a single registration state, it means that the terminal device can only register in one of the first network or the second network at the same time, for example, can only be registered in the 5G system or can only be in the EPS system. Registered in.
- the terminal device is in the dual registration state, it indicates that the terminal device can be registered in the first network and the second network at the same time, for example, can be registered in both the 5G network and the EPS network.
- the first network element determines that a session of the first network needs to be established for the terminal device. If the terminal device is in the dual registration state, that is, the terminal device establishes a context with the first network and the second network at the same time, the terminal device can select any network to perform service transmission at any time. For example, the terminal device is established in the 5G system and the EPS system at the same time. Context.
- the first indication information may further include second information, where the second information is used to indicate that the terminal device is in a single registration state.
- the first indication information includes the first information and the second information, and may establish the first time while establishing the second network session of the first session, if the condition indicated by the first indication information is met.
- the session of the first network of the session avoids establishing an unnecessary session of the first network and improves communication efficiency.
- the receiving, by the first network element, the first indication information from the second network element may include: the first network element receiving, from the second network element, a management request message of the first session, where The management request message of a session includes the first indication information.
- the management request message of the first session described above may include multiple types.
- the management request message of the first session may include any one of the following: a PDU session establishment request message of the first session, and a PDU session modification request message of the first session.
- the management request message of the first session may be a service request of a serviced interface, such as a Namf communication (communication) or an Nsmf_PDU session service.
- Namf refers to the service provided by AMF, which includes the communication or session management provided by SMF, that is, the service.
- Step 402 After receiving the first indication information, the first network element acquires first QoS control information of the first session of the terminal device, where the first session is the terminal device The second network established session.
- the first QoS control information may be used to control the quality of service of the service transmitted in the first network.
- the first QoS control information may be control information related to the quality of service of the traffic transmitted in the first network.
- the first QoS control information may include at least one of the following: a QoS parameter, an identifier of a QoS parameter, a packet filter, and priority information of a packet filter.
- the first network element may determine, according to the first indication information, whether a session of the first network needs to be established for the terminal device. For example, after receiving the first indication information, the first network element may directly determine that a session of the first network needs to be established for the terminal device. Alternatively, after receiving the first indication information, the first network element may synthesize the first indication information and other information to determine whether a session of the first network needs to be established for the terminal device. For example, the other information described above may be the following third information.
- the method 400 further includes: the first network element acquiring third information, where the third information is used to indicate that the attribute of the first session is to ensure continuity.
- the third information may be session continuity mode information of the first session or service and session continuity mode (SSC_mode) information of the first session.
- the foregoing third information may indicate that the attribute of the first session is to ensure continuity or to indicate that the attribute of the first session is not guaranteed to be continuous.
- the first network element itself stores the third information, or the first network element may obtain the subscription data from the UDM, and the third information may be included in the subscription data obtained from the UDM.
- the third information may be SSC_mode information.
- the first network element obtains the SSC_mode information of the first session from the UDM. If the SSC_mode indicates that the session mode is the first mode, the first session may be used to ensure continuity. If the SSC_mode indicates that the session mode is the second mode, it may indicate that the first session is not guaranteed to be continuous.
- the first network element may further determine whether the attribute of the first session is guaranteed continuity. If the attribute of the first session is to ensure continuity, the first network element may determine that a session of the first network needs to be established for the terminal device. If the attribute of the first session is that continuity is not guaranteed, the first network element may determine that the session of the first network does not need to be established for the terminal device.
- the first network of the first session may be established while establishing the second network session of the first session, if the network requirement indicated by the first indication information and the condition indicated by the third information are met.
- the session avoids the establishment of unnecessary first network sessions and improves communication efficiency.
- the third information indicates that the attribute of the first session is that continuity is not required, the first network element does not need to establish a session of the first network for the terminal device, which saves communication resources.
- the first network element may acquire the first QoS control information of the terminal device.
- the first QoS control information is QoS control information of a service transmitted in an EPS system.
- the first QoS control information may include at least one of the following: a QoS parameter, an identifier of the QoS parameter, a packet filter, and priority information of the packet filter.
- the QoS parameter in the first QoS control information may be the QoS parameter of the EPS default bearer of the terminal device, or may be the QoS parameter of the EPS dedicated bearer of the terminal device, and the priority information of the packet filter and the packet filter is
- the EPS carries a corresponding Traffic Flow Template (TFT), and the service flow template includes at least one packet filter.
- TFT Traffic Flow Template
- the acquiring, by the first network element, the first QoS control information of the terminal device may include at least two modes.
- the first network element may obtain second QoS control information from the third network element, and determine the first QoS control information according to the second QoS control information.
- the first network element can determine the first QoS control information in two ways. In the first path, the first network element may not modify the second QoS control information, and determine the second QoS control information as the first QoS control information.
- the first network element may send the second QoS control information to the policy control network element, and after receiving the second QoS control information, the policy control network element may be configured according to the second QoS control information. Determining first QoS control information, the first QoS control information being information authorized by a policy control unit.
- the policy control network element may modify the second QoS control information to obtain the authorized first QoS control information. Alternatively, the policy control network element may not modify the second QoS control information to obtain the authorized first QoS control information.
- the policy control network element may send the first QoS control information of the authorization to the first network element.
- the first network element may receive the first QoS control information from a policy control network element, where the first QoS control information is information that is authorized by the policy control network element.
- the policy control network element can obtain the first QoS control information in two ways. In the first approach, the policy control network element can generate the first QoS control information. In the second method, the policy control network element may obtain the subscribed third QoS control information from the fourth network element, where the policy control network element may determine the first QoS control information according to the third QoS control information. . Specifically, the policy control unit may select to modify or not modify the third QoS control information to obtain the first QoS control information.
- the first network element sends a subscription data acquisition request message of the first session to a third network element, where the subscription data acquisition request message includes fourth information, where The fourth information is used to request to provide subscription data of the first network; the first network element receives a subscription data response message of the first session from the third network element, where the subscription data response message includes a second QoS And control information, wherein the second QoS control information is contracted; and the first network element acquires the first QoS control information according to the second QoS control information.
- the fourth information may include a data network name (DNN) and indicate that subscription data of the first network needs to be acquired.
- the fourth information may further include an access point name (APN) of the first network to indicate that subscription data of the first network needs to be acquired.
- DNN data network name
- API access point name
- the acquiring, by the first network element, the first QoS control information according to the second QoS control information may include: determining, by the first network element, the second QoS control information as the first QoS control information; or, the first network element sends the second QoS control information to the policy control network element; the first network element receives the first QoS control information from the policy control network element, where The first QoS control information is based on the second QoS control information, and the first QoS control information is information authorized by the policy control network element.
- the method 400 further includes: the first network element sending the setup request message of the first session to a policy control network element, where the setup request message of the first session includes a fifth Information, the fifth information is used to indicate that the policy control network element establishes a session of the first network; the first network element receives the first QoS control information from the policy control network element, including: The first network element receives the setup response message of the first session from the policy control network element, where the setup response message of the first session includes the first QoS control information.
- Step 403 The first network element sends the first QoS control information to the second network element, and correspondingly, the second network element receives the first QoS control information from the first network element. .
- the foregoing first QoS control information may be carried in a first session management message, where the first session management message may be used to indicate to modify or establish QoS control information in the first network of the terminal device.
- the foregoing first session management message may include multiple types.
- the foregoing first session management message may include any one of the following: a session establishment message, a session modification message.
- the first session management message may be a service interface based message.
- a communication method is proposed.
- the second network session of the first session may be established. And establishing a session of the first network of the first session, so that the session of the first network establishing the first session is determined according to the current condition, thereby avoiding establishing an unnecessary session of the first network, and improving communication efficiency.
- method 400 further includes a portion of step 404.
- the terminal device sends the second indication information to the second network element, and the second network element receives the second indication information, where the second indication information is used to indicate that the current condition is supported by the The terminal device establishes a session of the first network.
- the second network element may have at least two ways to determine the first indication information.
- the second network element may receive the second indication information from the terminal device, and may determine the first indication information according to the second indication information.
- the second network element determines, by using the second indication information, that the current network condition indicates that the terminal device establishes the session of the first network, and may send the first indication information to the first network element to indicate that the current condition is supported as the terminal device. Establish a session for the first network.
- the second indication information may include the foregoing first information, and further, the second indication information may further include the foregoing second information.
- the terminal device may acquire the fifth information from the second network element in the process of registering the network, where the fifth information is used to indicate that a communication interface exists between the mobility management entity of the second network and the mobility management entity of the first network. And determining the first information according to the fifth information.
- the first information can be either explicit or implicit.
- the second network element may generate the first indication information by itself.
- the second network element may acquire the fifth information by itself, and then determine the first information according to the fifth information, and generate the first indication information.
- the terminal device may send the second information to the second network element, so that the second network element adds the second information to the first indication information.
- the first information is usually explicit.
- the second network element can be an AMF. Therefore, the second network element is a mobility management entity of the second network, and the second network element can determine that a communication interface exists between the mobility management entity of the second network and the mobility management entity of the first network. Thus, in the presence of the communication interface, the second network element can generate the first indication information.
- the second network element may send the first QoS control information to the base station, where the base station receives the After the first QoS control information, the first QoS control information may be sent to the terminal device.
- method 400 also includes a portion of step 405.
- Step 405 The second network element sends the first QoS control information to the terminal device by using a base station, and correspondingly, the terminal device receives first QoS control information of the first session of the terminal device.
- the first session is a session established by the terminal device through the second network.
- the first QoS control information may be used to control the quality of service of the service transmitted in the first network.
- the first QoS control information may be control information related to the quality of service of the traffic transmitted in the first network.
- the first QoS control information may include at least one of the following: a QoS parameter, an identifier of a QoS parameter, a packet filter, and priority information of a packet filter.
- the first QoS control information may be carried in a second session management message, where the second session management message is used to indicate to modify or establish QoS in the first network of the terminal device. Control information.
- the second session management message can include multiple types.
- the second session management message may include at least one of the following: a PDU session establishment accept message, an AN-specific resource steup message, and a session modification message.
- the foregoing message may acquire an interaction for a service of the serviced interface.
- FIG. 5 and 6 show the communication flow of the session establishment process.
- Figure 7 shows the communication flow during the session modification process.
- Fig. 8 shows a communication flow in which a terminal device registers with a network.
- the first indication information in FIG. 5 is determined according to the second indication information sent by the terminal device.
- the first indication information in Fig. 6 is generated by the AMF.
- the (R)AN in FIG. 5 to FIG. 8 represents an access network (AN) entity or a radio access network (RAN) entity.
- the (R)AN may include a base station.
- FIG. 5 shows a process in which the first indication information is determined based on the second indication information.
- the method of Figure 5 includes:
- the terminal device acquires, in the process of registering to the network, fifth information, where the fifth information is used to indicate that a communication interface exists between the mobility management entity of the second network and the mobility management entity of the first network.
- the foregoing fifth information may indicate that the AMF supports the N26 interface (that is, the message interaction between the AMF and the MME) or the AMF support and the 4G interworking.
- the terminal device sends a first PDU session establishment request to the AMF, where the first PDU session establishment request is used to request to establish a first session of the terminal device in the 5G system.
- the first PDU session establishment request includes second indication information.
- the second indication information may include first information, where the first information is used to indicate that the AMF supports the N26 interface or the AMF supports the 4G interworking.
- the first information may be an EPS default bearer identifier of the terminal device.
- the terminal device determines to initiate a session request to the network, if the AMF supports the N26 interface, it may determine that the EPS default bearer identifier is allocated.
- the first information may be used to directly indicate that an N26 interface exists between the AMF and the MME of the EPS system.
- the first information may be determined according to the fifth information in S501.
- the second indication information may further include second information, where the second information is used to indicate that the current condition is that the terminal device is in a single registration state.
- determining the condition that the EPS session needs to be established may further include: the mode of the first session of the terminal device is to maintain continuity, or the DNN indicates a voice network or other network that needs to ensure session continuity.
- the PDU session establishment request message includes a DNN. If the terminal device has an EPS APN corresponding to the DNN, the first indication information may further include an EPS APN.
- the AMF may acquire the subscribed UE-AMBR of the user EPS network.
- the AMF may perform SMF selection based on the PDU session establishment request received from the terminal device.
- the AMF sends a second PDU session establishment request to the SMF+PGW-C according to the first PDU session establishment request, where the second PDU session establishment request message includes first indication information.
- the AMF may determine the second indication information as the first indication information.
- the first indication information For a detailed description of the first indication information, reference may be made to the related content in FIG.
- the second PDU session establishment request is generated according to the first PDU session request.
- the session request of the first PDU may be carried in the second session establishment request message.
- the first indication information may further include an EPS APN.
- SMF+PGW-C sends a subscription data acquisition request to the UDM+HSS, where the subscription data acquisition request includes fourth information, and the fourth information is used to request to provide subscription data of the first network.
- the fourth information may be added in the subscription data acquisition request sent to the UDM+HSS.
- the fourth information may include DNN/APN information for instructing the UDM+HSS to simultaneously provide subscription data of the EPS when providing 5G subscription data.
- the DNN/APN is used to indicate that the subscription data of the corresponding DNN/APN is obtained.
- UDM+HSS sends a subscription data response message to the SMF+PGW-C.
- the subscription data response message includes second QoS control information.
- the second QoS control information may include EPS subscription data of the terminal device.
- the EPS subscription data is the subscription data of a specific APN corresponding to the DNN, and includes the QoS text of the EPS subscription and the contracted APN-AMBR.
- the QoS text of the above EPS subscription may include: a QoS class identifier (QCI), an allocation and an retention priority (ARP).
- QCI QoS class identifier
- ARP retention priority
- the SMF+PGW-C sends a third PDU session establishment request to the PCF+PCRF.
- the third PDU session request includes second QoS control information.
- SMF+PGW-C can perform PCF selection. After selecting the PCF, the SMF+PGW-C sends a PDU session establishment request to the PCF+PCRF.
- the PCF+PCRF sends a third PDU session setup response to the SMF+PGW-C.
- the third PDU session setup response corresponds to the third PDU session request, and the third PDU session setup response includes the subscribed first QoS control information.
- the first QoS control information is determined according to the second QoS control information.
- details about the first QoS control information refer to related content in FIG. 4, and details are not described herein again.
- the PDU session setup response can include an authorized default PCC rule.
- the authorized default PCC rules contain authorized 5G default QoS rules and EPS default bearer information.
- the first signed QoS control information may include the EPS default bearer information.
- the PCF+PCRF determines that a session of the EPS system needs to be established for the terminal device. It may be indication information transmitted according to the received SMF+PGW-C.
- the second QoS control parameter may include an EPS default bearer QoS parameter.
- the SMF+PGW-C can allocate a 5G QoS flow ID and store the 5G QoS flow ID and the corresponding QoS flow parameters. Further, the SMF+PGW-C can store corresponding EPS default bearer information.
- the EPS default bearer information may include a default EPS bearer ID and a default EPS QoS text. For example, the above default EPS QoS text includes QCI or ARP.
- the EPS default bearer information and the 5G default QoS flow related information may be correspondingly stored.
- the EPS default bearer information includes an EPS default bearer QoS parameter obtained by the SMF+PGW-C according to the obtained from the UDM+HSS and determined according to the local policy; or an EPS default bearer QoS parameter acquired by the SMF+PGW-C from the PCF+PCRF;
- the SMF+PGW-C sends a fourth session establishment request message to the UPF+PGW-U.
- the fourth session establishment request message is a session establishment request of the N4 interface.
- the N4 interface is a communication interface between UPF+PGW-U and SMF+PGW-C.
- the UPF+PGW sends a fourth session setup response message to the SMF+PGW-C.
- the fourth session establishment response is a session establishment response message of the N4 interface.
- the SMF+PGW-C sends a session management request determination message to the AMF, where the session management request determination message includes a second PDU session establishment response message, where the second PDU session establishment response message includes the first QoS control information.
- the first QoS control information may include, for example, a QoS parameter of an EPS default bearer. Further, the first QoS control information includes a corresponding EPS bearer ID.
- the AMF sends a first PDU session request response message to the 5G AN.
- the first QoS session request response message includes the first QoS control information.
- the foregoing first QoS control information may include a QoS parameter of an EPS default bearer. Further, the first QoS control information may further include a corresponding EPS bearer ID.
- the first PDU session request message is a PDU session request message of the N2 interface.
- the N2 interface is a communication interface between the AMF and the 5G RAN.
- the AN sends an AN-dedicated resource setup message to the terminal device, where the AN-dedicated resource setup message includes the first QoS control information.
- the establishment process of the air interface resource may be performed between the AN and the terminal device, and the first QoS control information is carried in the flow.
- the terminal device performs uplink and downlink data transmission with the network device.
- the AMF determines and sends the first indication information according to the second indication information sent by the terminal device, so that the network side determines the session for generating the EPS system according to the first indication information, and does not need to establish the EPS system at any time.
- Sessions before certain conditions, send pre-established processes to minimize system overhead. Reduce unnecessary overhead caused by initiating an EPS system session at any time.
- FIG. 6 shows a process in which the first indication information is generated by the AMF.
- the method of Figure 6 includes:
- the terminal device sends a first PDU session establishment request to the AMF, where the first PDU session establishment request is used to request to establish a first session of the terminal device in the 5G system.
- the terminal device determines that a session needs to be established, and the terminal device sends the first PDU session establishment request to the AMF.
- the AMF sends a second PDU session establishment request to the selected SMF+PGW-C according to the first PDU session establishment request, where the second PDU session establishment request message includes first indication information.
- the second PDU session establishment request is generated according to the first PDU session establishment request.
- the AMF generates the first indication information, and includes the first indication information in the second PDU session establishment request.
- the first indication information may include first information, where the first information is used to indicate that the AMF supports N26 interface information or AMF supports interworking with 4G.
- the first information may be an EPS default bearer identifier of the terminal device.
- the terminal device determines to initiate a session request to the network, if the AMF supports the N26 interface, it may determine that the EPS default bearer identifier is allocated.
- the first information may be used to directly indicate that an N26 interface exists between the AMF and the MME of the EPS system.
- the AMF since the AMF itself can determine the first information, that is, the interface capability information of the N26. Therefore, the AMF may generate first indication information according to the first information, where the first indication information includes the first information. Further, the AMF may receive the second information from the terminal device, that is, the terminal device is in a single registration state. Therefore, the AMF may also add the above second information to the first indication information.
- the optional AMF according to its own capability of supporting the N26 interface, the terminal device is in a single registration state, and includes the indication information, which is used to indicate that the session management function establishes an EPS network session, such as EPS bearer information, including QoS parameters, and the like. information.
- SMF+PGW-C sends a subscription data acquisition request to the UDM+HSS, where the subscription data acquisition request includes fourth information, and the fourth information is used to request to provide subscription data of the first network.
- the fourth information may be added in the subscription data acquisition request sent to the UDM+HSS.
- the fourth information may include DNN/APN information for instructing the UDM+HSS to simultaneously provide subscription data of the EPS when providing 5G subscription data.
- the DNN/APN is used to indicate that the subscription data of the corresponding DNN/APN is obtained.
- UDM+HSS sends a subscription data response message to the SMF+PGW-C.
- the subscription data response message includes second QoS control information.
- the second QoS control information may include EPS subscription data of the terminal device.
- the EPS subscription data is the subscription data of a specific APN corresponding to the DNN, and includes the QoS text of the EPS subscription and the contracted APN-AMBR.
- the QoS text of the above EPS subscription may include: a QoS class identifier (QCI), an allocation and an retention priority (ARP).
- QCI QoS class identifier
- ARP retention priority
- the SMF+PGW-C sends a third PDU session establishment request to the PCF+PCRF.
- the third PDU session request includes second QoS control information.
- SMF+PGW-C can perform PCF selection. After selecting the PCF, the SMF+PGW-C sends a PDU session establishment request to the PCF+PCRF.
- the PCF+PCRF sends a third PDU session setup response to the SMF+PGW-C.
- the third PDU session setup response corresponds to a third PDU session request, and the third PDU session setup response includes the subscribed first QoS control information.
- the first QoS control information is determined according to the second QoS control information.
- details about the first QoS control information refer to related content in FIG. 4, and details are not described herein again.
- the PDU session setup response can include an authorized default PCC rule.
- the authorized default PCC rules contain authorized 5G default QoS rules and EPS default bearer information.
- the first signed QoS control information may include the EPS default bearer information.
- the PCF+PCRF determines that a session of the EPS system needs to be established for the terminal device. It may be indication information transmitted according to the received SMF+PGW-C.
- the second QoS control parameter may include an EPS default bearer QoS parameter.
- the SMF+PGW-C can allocate a 5G QoS flow ID and store the 5G QoS flow ID and the corresponding QoS flow parameters. Further, the SMF+PGW-C can store corresponding EPS default bearer information.
- the EPS default bearer information can include a default EPS bearer ID and a default EPS QoS rule. The EPS default bearer information and the 5G default QoS flow can be stored correspondingly.
- the EPS default bearer information includes an EPS default bearer QoS parameter obtained by the SMF+PGW-C according to the obtained from the UDM+HSS and determined according to the local policy; or an EPS default bearer QoS parameter acquired by the SMF+PGW-C from the PCF+PCRF;
- the SMF+PGW-C sends a fourth session establishment request message to the UPF+PGW-U.
- the fourth session establishment request message is a session establishment request of the N4 interface.
- the N4 interface is a communication interface between UPF+PGW-U and SMF+PGW-C.
- the UPF+PGW sends a fourth session establishment response message to the SMF+PGW-C.
- the fourth session establishment response is a session establishment response message of the N4 interface.
- the SMF+PGW-C sends a session management request determining message to the AMF.
- the session management request determining message includes a second PDU session setup response message, where the second PDU session setup response message includes the first QoS control information.
- the first QoS control information may include, for example, a QoS parameter of an EPS default bearer. Further, the first QoS control information includes a corresponding EPS bearer ID. Optionally, the QoS control information may further include TFT information.
- the AMF sends a first PDU session request response message to the 5G AN.
- the first QoS session request response message includes the first QoS control information.
- the foregoing first QoS control information may include a QoS parameter of an EPS default bearer. Further, the first QoS control information may further include a corresponding EPS bearer ID.
- the first PDU session request message is a PDU session request message of the N2 interface.
- the N2 interface is a communication interface between the AMF and the 5G RAN.
- the method further includes: the terminal device allocates a default EPS bearer identifier.
- the AN sends an AN-dedicated resource setup message to the terminal device, where the AN-dedicated resource setup message includes the first QoS control information.
- the establishment process of the air interface resource may be performed between the AN and the terminal device, and the first QoS control information is carried in the flow.
- the terminal device performs uplink and downlink transmission with the network device.
- the AMF autonomously generates the first indication information, so that the network side determines the session for generating the EPS system according to the first indication information, and does not need to establish the session of the EPS system at any time, and sends the pre-established session under certain conditions.
- Figure 7 shows the communication flow of session modification.
- S701, S702, and S703 are three parallel steps, and when executed, any one of steps S701, S702, and S703 can be executed.
- the first QoS control information may include established or modified EPS bearer information.
- the method of Figure 7 includes:
- the terminal device sends a PDU session modification request to the AMF. Further, after receiving the PDU modification request, the AMF sends the PDU session modification request to the SMF+PGW-C.
- the PDU session modification request is used to indicate that the QoS parameters of the 5G are modified, and the EPS session bearer parameters are instructed to be modified.
- the terminal device when the terminal device determines that it is necessary to modify an existing PDU session, the terminal device transmits a PDU session modification request to the AMF, and the AMF sends a PDU session modification request to the SMF+PGW-C.
- the terminal device can use the flow to modify an existing QoS resource, or delete an already established QoS resource or delete a service on a QoS resource.
- S702 The AF sends a session establishment request to the PCF+PCRF, and simultaneously establishes an EPS session bearer.
- the session establishment request is a session establishment request of the N5 interface.
- the N5 interface is a communication interface between the AF and the PCF+PCRF.
- the AF may actively request the network to establish resources for the service, and when needed, initiate an N5 session establishment process to the PCF+PCRF to provide service information and service QoS requirements.
- the PCF+PCRF determines according to the previous SMF request service transmission indication, and when determining the 5G QoS rule, simultaneously establishes the EPS QoS rule, and sends the determined 5G QoS to the SMF+PGW-C. PDU-CAN modification request for rules and EPS QoS rules.
- S703, SMF+PGW-C determines that the QoS parameters of the 5G QoS flow need to be modified, and determines that the QoS parameters of the EPS bearer need to be modified.
- the SMF+PGW-C determines to modify the QoS parameters of the 5G QoS flow according to the local policy, and determines to modify the QoS parameters of the EPS bearer according to the first indication information received during the session establishment process.
- S704 SMF+PGW-C and PCF+PCRF perform a PDU session modification process.
- the PDU session modification process is similar to the PDU session establishment process. For details, refer to S506-S507 in FIG. 5 and S605-S606 in FIG. 6.
- SMF+PGW-C stores or updates the QoS parameters of the EPS bearer.
- the SMF+PGW-C saves the updated new 5G QoS flow parameters while saving the QoS parameters of the corresponding EPS bearer.
- the network determines to establish a proprietary EPS bearer, and the SMF saves the established EPS bearer when the +PGW-C saves the new 5G QoS flow information.
- the SMF+PGW-C sends a PDU session modification request to the AMF, where the PDU session modification request includes the established or modified EPS bearer information.
- the SMF+PGW-C sends a session management request to the AMF, and the session management request includes a PDU session modification request, and the PDU session modification request includes the established or modified EPS bearer information.
- the AMF sends a PDU session request to the (R)AN, where the PDU session request includes the established or modified EPS bearer information.
- the PDU session request in S707 is a PDU session request of the N2 interface.
- the N2 interface is the communication interface between the AMF and the AN.
- the AN sends an AN dedicated resource modification message to the terminal device, where the AN dedicated resource modification message includes the established or modified EPS bearer information.
- an AN dedicated resource modification procedure is performed between the terminal device and the AN, and in the process, the AN sends the established or modified EPS bearer information to the terminal device. If the terminal device determines to create new EPS bearer information, the EPS bearer identifier is allocated for the bearer information.
- the AN sends a PDU session request confirmation message to the AMF.
- the PDU session request acknowledgement message in S709 is a PDU session request acknowledgement message of the N2 interface.
- the AN sends an N2 PDU session request acknowledgement to the AMF.
- the terminal device allocates an EPS bearer identifier
- the PDU session request acknowledgement message may include an EPS bearer identifier.
- the AMF sends a session right request to the SMF+PGW-C.
- the session rights request includes an EPS bearer identifier.
- the bearer parameters of the EPS system can be modified according to network requirements. In other words, only when certain conditions are met, the system will modify and establish the bearer parameters of the EPS system in the process of modifying the 5G session, thereby avoiding unnecessary overhead and improving communication efficiency.
- the network side may according to whether the network supports the N26 interface, the registration mode of the terminal device, and the session mode. Determine whether to establish a session for the EPS system.
- the SMF obtains the contracted PDN context of the EPS system while acquiring the context of the subscription of the 5G session from the UDM+HSS according to the received fourth information, and the PDN context includes the first QoS control information, for example, EPS subscribed QoS profile (subscribe access point name aggregate maximum bit rate, subscribed APN-AMBR).
- EPS subscribed QoS profile subscribe access point name aggregate maximum bit rate, subscribed APN-AMBR
- the SMF+PGW-C provides authorized default 5G QoS rules and authorized EPS default bearer information to the terminal device.
- the SMF+PGW-C interacts with the PCF to obtain the authorized default 5G QoS rules and authorized EPS default bearer information. Otherwise the SMF can perform authorization according to the local policy.
- the PCF/SMF+PGW-C determines the QoS rule of the EPS system while determining the 5G QoS rule according to the indication information. It is determined by SMF+PGW-C whether to establish a new EPS bearer bearer context. When a new EPS bearer bearer needs to be established, the EPS bearer information is sent to the terminal device and the EPS bearer ID assigned by the terminal device is received.
- the network side may synchronously modify or delete the corresponding EPS bearer information.
- FIG. 8 shows a communication flow of the terminal device registering to the network, and shows a process in which the terminal device acquires the fifth information when registering to the network, and the method of FIG. 8 includes:
- the terminal device sends a registration request (register request) to the (R) AN, and accordingly, the (R) AN receives the registration request.
- the (R)AN sends the registration request to the AMF.
- the (R)AN can perform AMF selection and send the above registration request to the selected AMF.
- the AMF sends a register accept message to the terminal device by using the (R)AN, where the registration accept message includes the fifth information.
- the fifth information can be used to indicate that the mobility management entity of the second network has a communication interface with the mobility management entity of the first network.
- the fifth information is used to indicate that the current network supports the N26 interface between the AMF and the MME.
- the fifth information is used to indicate that the mobility management entity of the second network has communication with the mobility management entity of the first network. interface. In order to communicate according to the fifth information, the communication efficiency is improved.
- the communication method of the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 8.
- the network element and the terminal device of the embodiment of the present application are described in detail below with reference to FIG. 9 to FIG.
- FIG. 9 is a schematic block diagram of a network element 900 in the embodiment of the present application. It should be understood that the network element 900 can perform the steps performed by the first network element in the methods of FIGS. 1-8, and is not detailed herein to avoid repetition.
- the network element 900 includes a receiving unit 910, an obtaining unit 920, and a transmitting unit 930.
- the receiving unit 910 is configured to receive first indication information from the second network element, where the first indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device;
- the acquiring unit 920 is configured to acquire first quality of service QoS control information of the first session of the terminal device after receiving the first indication information, where the first session is the terminal device a session established by the network;
- the sending unit 930 is configured to send the first QoS control information to the second network element.
- FIG. 10 is a schematic block diagram of a network element 1000 in the embodiment of the present application. It should be understood that the network element 1000 can perform the steps performed by the second network element in the methods of FIGS. 1-8, and is not detailed herein to avoid repetition.
- the network element 1000 includes a transmitting unit 1010 and a receiving unit 1020.
- the sending unit 1010 is configured to send first indication information to the first network element, where the first indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device;
- the receiving unit 1020 is configured to receive first quality of service QoS control information of the first session of the terminal device from the first network element, where the first session is established by the terminal device by using a second network. Conversation.
- FIG. 11 is a schematic block diagram of a terminal device 1100 according to an embodiment of the present application. It should be understood that the terminal device 1100 can perform the steps performed by the terminal device in the methods of FIGS. 1 to 8, and is not described in detail herein in order to avoid redundancy.
- the terminal device 1100 includes a transmitting unit 1110 and a receiving unit 1120.
- the sending unit 1110 is configured to send second indication information to the second terminal device, where the second indication information is used to indicate that the current condition supports establishing a session of the first network for the terminal device;
- the receiving unit 1120 is configured to receive first quality of service QoS control information of the first session of the terminal device, where the first session is a session established by the terminal device by using the second network.
- FIG. 12 is a schematic block diagram of a network element 1200 in the embodiment of the present application. It should be understood that the network element 1200 can perform the steps performed by the first network element in the methods of FIG. 1 to FIG. 8. To avoid repetition, details are not described herein.
- the network element 1200 includes:
- a memory 1210 configured to store a program
- a communication interface 1220 configured to communicate with other devices
- the processor 1230 is configured to execute a program in the memory 1210, when the program is executed, the processor 1230 is configured to receive, by using the communication interface 1220, first indication information from a second network element, where the first indication is The information is used to indicate that the current condition supports establishing a session of the first network for the terminal device; and after receiving the first indication information, acquiring first quality of service QoS control information of the first session of the terminal device, where The first session is a session established by the terminal device through the second network; and the first QoS control information is sent to the second network element by using the communication interface 1220.
- FIG. 13 is a schematic block diagram of a network element 1300 in the embodiment of the present application. It should be understood that the network element 1300 can perform the steps performed by the second network element in the methods of FIG. 1 to FIG. 8. To avoid repetition, details are not described herein.
- the network element 1300 includes:
- a memory 1310 configured to store a program
- a communication interface 1320 configured to communicate with other devices
- the processor 1330 is configured to execute a program in the memory 1310, when the program is executed, the processor 1330 is configured to send, by using the communication interface 1320, first indication information to the first network element, where the first indication is The information is used to indicate that the current condition supports establishing a session of the first network for the terminal device; and receiving, by the communication interface 1320, the first quality of service QoS control information of the first session of the terminal device from the first network element, where The first session is a session established by the terminal device through the second network.
- FIG. 14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application. It should be understood that the terminal device 1400 can perform the various steps performed by the terminal device in the methods of FIGS. 1 through 8, and in order to avoid repetition, it will not be described in detail herein.
- the terminal device 1400 includes:
- a memory 1410 configured to store a program
- a communication interface 1420 configured to communicate with other devices
- the processor 1430 is configured to execute a program in the memory 1410, when the program is executed, the processor 1430 is configured to send, by using the communication interface 1420, second indication information to the second terminal device, where the second indication is The information is used to indicate that the current condition supports establishing a session of the first network for the terminal device; and receiving, by the communication interface 1420, first quality of service QoS control information of the first session of the terminal device, where the first The session is a session established by the terminal device through the second network.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network element, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. medium.
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Abstract
Description
Claims (35)
- 一种通信方法,其特征在于,包括:第一网元从第二网元接收第一指示信息,所述第一指示信息用于指示当前条件支持为终端装置建立第一网络的会话;在接收所述第一指示信息之后,所述第一网元获取所述终端装置的第一会话的第一服务质量QoS控制信息,其中,所述第一会话为所述终端装置通过第二网络建立的会话;所述第一网元向所述第二网元发送所述第一QoS控制信息。
- 如权利要求1所述的通信方法,其特征在于,所述第一指示信息包括第一信息,所述第一信息用于指示所述当前条件为所述第二网络的移动性管理实体与所述第一网络的移动性管理实体之间存在通信接口。
- 如权利要求2所述的通信方法,其特征在于,所述第一信息包括所述终端装置的所述第一网络的默认承载标识。
- 如权利要求1至3中任一项所述的通信方法,其特征在于,所述第一指示信息还包括第二信息,所述第二信息用于指示所述当前条件为所述终端装置为单注册态。
- 如权利要求1至4中任一项所述的通信方法,其特征在于,所述方法还包括:所述第一网元获取第三信息,所述第三信息用于指示所述第一会话的属性为保证连续性;在获取所述第一指示信息和所述第三信息之后,所述第一网元获取所述第一QoS控制信息。
- 如权利要求1至5中任一项所述的通信方法,其特征在于,所述第一网元获取所述终端装置的第一QoS控制信息,包括:所述第一网元向第三网元发送所述第一会话的签约数据获取请求消息,所述签约数据获取请求消息包括第四信息,所述第四信息用于请求提供所述第一网络的签约数据;所述第一网元从所述第三网元接收所述第一会话的签约数据响应消息,所述签约数据响应消息包括第二QoS控制信息,其中所述第二QoS控制信息为所述第四信息请求提供的所述第一网络的签约数据;所述第一网元根据所述第二QoS控制信息,获取所述第一QoS控制信息。
- 如权利要求6所述的通信方法,其特征在于,所述第一网元根据所述第二QoS控制信息,获取所述第一QoS控制信息,包括:所述第一网元将所述第二QoS控制信息确定为所述第一QoS控制信息;或,所述第一网元向策略控制网元发送所述第二QoS控制信息;所述第一网元从所述策略控制网元接收所述第一QoS控制信息,其中,所述第一QoS控制信息基于所述第二QoS控制信息,所述第一QoS控制信息为被所述策略控制网元授权的信息。
- 如权利要求6或7所述的通信方法,其特征在于,所述第四信息包括所述第一网络的接入点名称APN。
- 如权利要求1至5中任一项所述的通信方法,其特征在于,所述第一网元获取所 述终端装置的第一QoS控制信息,包括:所述第一网元从所述策略控制网元接收所述第一QoS控制信息,其中,所述第一QoS控制信息是所述策略控制网元授权的信息。
- 如权利要求9所述的通信方法,其特征在于,所述方法还包括:所述第一网元向策略控制网元发送所述第一会话的建立请求消息,所述第一会话的建立请求消息包括第五信息,所述第五信息用于指示所述策略控制网元建立所述第一网络的会话;所述第一网元从所述策略控制网元接收所述第一QoS控制信息,包括:所述第一网元从所述策略控制网元接收所述第一会话的建立响应消息,所述第一会话的建立响应消息包括所述第一QoS控制信息。
- 如权利要求1至10中任一项所述的通信方法,其特征在于,所述第一QoS控制信息包括以下至少一个:QoS参数、QoS参数的标识、包过滤器、包过滤器的优先级信息。
- 根据权利要求1至11中任一项所述的通信方法,其特征在于,所述第一网元从第二网元接收第一指示信息,包括:所述第一网元从所述第二网元接收所述第一会话的管理请求消息,所述第一会话的管理请求消息包括所述第一指示信息。
- 如权利要求1至12中任一项所述的通信方法,其特征在于,所述第一QoS控制信息携带于第一会话管理消息中,所述第一会话管理消息用于指示修改或建立所述终端装置的第一网络中的QoS控制信息。
- 一种通信方法,其特征在于,包括:第二网元向第一网元发送第一指示信息,所述第一指示信息用于指示当前条件支持为终端装置建立第一网络的会话;所述第二网元从所述第一网元接收所述终端装置的第一会话的第一服务质量QoS控制信息,其中,所述第一会话为所述终端装置通过第二网络建立的会话。
- 如权利要求14所述的通信方法,其特征在于,所述方法还包括:所述第二网元从终端装置接收第二指示信息,所述第二指示信息用于指示当前条件支持为终端装置建立第一网络的会话;所述第二网元根据所述第二指示信息,确定所述第一指示信息。
- 如权利要求14或15所述的通信方法,其特征在于,所述第一指示信息包括第一信息,所述第一信息用于指示所述当前条件为所述第二网络的移动性管理实体与所述第一网络的移动性管理实体之间存在通信接口。
- 如权利要求16所述的通信方法,其特征在于,所述第一信息包括所述终端装置的所述第一网络的默认承载标识。
- 如权利要求14至17中任一项所述的通信方法,其特征在于,所述第一指示信息还包括第二信息,所述第二信息用于指示所述当前条件为所述终端装置为单注册态。
- 如权利要求14至18中任一项所述的通信方法,其特征在于,所述第一QoS控制信息包括以下至少一个:QoS参数、QoS参数的标识、包过滤器、包过滤器的优先级信息。
- 根据权利要求14至19中任一项所述的通信方法,其特征在于,所述第二网元向 第一网元发送第一指示信息,包括:所述第二网元向所述第一网元发送所述第一会话的管理请求消息,所述第一会话的管理请求消息包括所述第一指示信息。
- 如权利要求14至20中任一项所述的通信方法,其特征在于,所述第一QoS控制信息携带于第一会话管理消息中,所述第一会话管理消息用于指示修改或建立所述终端装置的第一网络中的QoS控制信息。
- 一种通信方法,其特征在于,包括:终端装置向第二网元发送第二指示信息,所述第二指示信息用于指示当前条件支持为所述终端装置建立第一网络的会话;所述终端装置接收所述终端装置的第一会话的第一服务质量QoS控制信息,其中,所述第一会话为所述终端装置通过第二网络建立的会话。
- 如权利要求22所述的通信方法,其特征在于,所述第二指示信息包括第一信息,所述第一信息用于指示所述当前条件为所述第二网络的移动性管理实体与所述第一网络的移动性管理实体之间存在通信接口。
- 如权利要求23所述的通信方法,其特征在于,所述第一信息包括所述终端装置的所述第一网络的默认承载标识。
- 如权利要求22至24中任一项所述的通信方法,其特征在于,所述第二指示信息还包括第二信息,所述第二信息用于指示所述当前条件为所述终端装置为单注册态。
- 如权利要求22至25中任一项所述的通信方法,其特征在于,所述第一QoS控制信息包括以下至少一个:QoS参数、QoS参数的标识、包过滤器、包过滤器的优先级信息。
- 如权利要求22至26中任一项所述的通信方法,其特征在于,所述第一QoS控制信息携带于第二会话管理消息中,所述第二会话管理消息用于指示修改或建立所述终端装置的第一网络中的QoS控制信息。
- 一种网元,其特征在于,包括:存储器,用于存储计算机指令;处理器,用于执行所述存储器中存储的计算机指令,当所述计算机指令被执行时,所述处理器用于执行如权利要求1-13中任一项所述方法。
- 一种网元,其特征在于,包括:存储器,用于存储计算机指令;处理器,用于执行所述存储器中存储的计算机指令,当所述计算机指令被执行时,所述处理器用于执行如权利要求14-21中任一项所述方法。
- 一种终端装置,其特征在于,包括:存储器,用于存储计算机指令;处理器,用于执行所述存储器中存储的计算机指令,当所述计算机指令被执行时,所述处理器用于执行如权利要求22-27中任一项所述方法。
- 一种通信***,其特征在于,包括:如权利要求1-13中任一项所述的网元以及如权利要求14-21中任一项所述的网元。
- 一种通信***,其特征在于,包括:如权利要求1-13中任一项所述的网元;如权利要求14-21中任一项所述的网元以及如权利要求22-27中任一项所述的终端装置。
- 一种计算机存储介质,其特征在于,包括计算机指令,当所述计算机指令在计算机上运行时,使得所述计算机执行如权利要求1-13中任一项所述的方法。
- 一种计算机存储介质,其特征在于,包括计算机指令,当所述计算机指令在计算机上运行时,使得所述计算机执行如权利要求14-21中任一项所述的方法。
- 一种计算机存储介质,其特征在于,包括计算机指令,当所述计算机指令在计算机上运行时,使得所述计算机执行如权利要求22-27中任一项所述的方法。
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CN115396851A (zh) * | 2019-09-26 | 2022-11-25 | 华为技术有限公司 | 一种基于nf的通信方法、设备及存储介质 |
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CN110944367B (zh) * | 2019-12-20 | 2021-12-24 | 广东工业大学 | 一种4g与5g互操作的方法 |
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EP3700256A1 (en) | 2020-08-26 |
EP3700256B1 (en) | 2024-01-03 |
CN109756938B (zh) | 2021-06-22 |
EP4325938A2 (en) | 2024-02-21 |
US20200260336A1 (en) | 2020-08-13 |
US11558783B2 (en) | 2023-01-17 |
US11997543B2 (en) | 2024-05-28 |
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