WO2020252667A1 - Procédé et appareil d'association de session - Google Patents

Procédé et appareil d'association de session Download PDF

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Publication number
WO2020252667A1
WO2020252667A1 PCT/CN2019/091785 CN2019091785W WO2020252667A1 WO 2020252667 A1 WO2020252667 A1 WO 2020252667A1 CN 2019091785 W CN2019091785 W CN 2019091785W WO 2020252667 A1 WO2020252667 A1 WO 2020252667A1
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WIPO (PCT)
Prior art keywords
session
indication information
identifier
eatsss
rule
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Ceased
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PCT/CN2019/091785
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English (en)
Chinese (zh)
Inventor
杨皓睿
许阳
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to PCT/CN2019/091785 priority Critical patent/WO2020252667A1/fr
Priority to CN201980097135.5A priority patent/CN113994762B/zh
Publication of WO2020252667A1 publication Critical patent/WO2020252667A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • This application relates to the field of communications, and in particular to a method and device for associating sessions.
  • PDU protocol data unit support system protocol data unit, PDU
  • PDU terminal connection service i.e. PDU terminal connection service and network traffic data
  • PDU packet data channel It can be called a PDU session, and a PDU session is called a session for short.
  • the terminal device may transmit data through a single session belong to different access networks, e.g., through the terminal apparatus belongs to the third generation partnership project (3 rd generation partnership project, 3GPP ) access network or a non-3GPP access network to establish a session, and by Data is transferred between the session and the data network.
  • 3GPP third generation partnership project
  • 3GPP third generation partnership project
  • a method for associating a session including: a terminal device receives first indication information, where the first indication information is used to indicate that the session can be used for enhanced access traffic steering switching and splitting (enhanced access traffic steering switching). splitting, eATSSS); the terminal device associates the first session with the second session according to the first indication information.
  • a network element sends first indication information to a terminal device, where the first indication information is used to indicate that the session can be used for eATSSS.
  • another method for associating a session including: a mobility management function (access and mobility management function, AMF) receives the identifier of the second session and a session establishment request message, where the session establishment request message is used to request Associate the third session with the second session; the AMF determines from multiple SMFs that it supports the session management function (session management function, SMF) of eATSSS; the SMF sends the session establishment request to the SMF that supports eATSSS news.
  • AMF access and mobility management function
  • a device for associating a session is provided, which is used to perform the method in any one of the first to third aspects, or to perform any one of the first to third aspects.
  • the apparatus for associating a session includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • a device for associating a session including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, execute the method in any one of the first aspect to the third aspect, or execute the first aspect to the third aspect.
  • the method in each implementation in any one of the aspects.
  • the chip includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip is used for executing the method in any one of the first to third aspects, or using The method in any one of the foregoing first aspect to the third aspect is executed.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in any one of the first aspect to the third aspect, or execute the first aspect to the third aspect. The method in any one of the third aspects.
  • a computer program product including computer program instructions that cause a computer to execute the method in any one of the first to third aspects, or to execute the first to third aspects.
  • the method in each implementation in any one of the aspects.
  • a computer program which when running on a computer, causes the computer to execute the method in any one of the first to third aspects, or execute the method in the first to third aspects.
  • the method in each implementation in any aspect of.
  • the network element sends to the terminal device the indication information indicating that the session of the terminal device can be used for eATSSS, so that the terminal device can associate multiple sessions and use multiple sessions to transmit data at the same time, which improves the data transmission rate and flexibility.
  • Figure 1 is a schematic diagram of a communication system suitable for the present application
  • Figure 2 is a schematic diagram of a method for associating a session provided by the present application
  • FIG. 3 is a schematic diagram of another method for associating a session provided by this application.
  • Fig. 4 is a schematic diagram of a device for associating a session provided by the present application.
  • FIG. 5 is a schematic diagram of another apparatus for associating a session provided by this application.
  • Fig. 6 is a schematic diagram of yet another apparatus for associating a session provided by the present application.
  • Fig. 7 is a schematic diagram of a device for associating a session provided by the present application.
  • FIG. 1 is a schematic diagram of a communication system suitable for this application.
  • the communication system 100 includes a network element 110 and a terminal device 120.
  • the terminal device 120 can communicate with the network device 110.
  • the terminal device 120 may communicate with the network element 110 through radio waves, and may also communicate with the network element 110 through optical fibers or cables.
  • the terminal device 120 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, for example, the third-generation partnership project (3 rd Generation partnership project, 3GPP) defined user equipment (user equipment, UE), mobile station (mobile station, MS), soft terminal, home gateway, set-top box, etc.
  • 3GPP Third-generation partnership project
  • Network element 110 may conform to specifications 3GPP access network device or the core network device, e.g., the fifth generation (5 th generation, 5G) communication system, a base station (GNB) or AMF.
  • the network element 110 may also be a non-3GPP (non-3GPP) network device, such as an access gateway (AGF).
  • the network element 110 may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.
  • the communication system 100 is only an example, and the communication system applicable to the present application is not limited to this.
  • the terminal device 120 can use different access technologies to transmit data.
  • the terminal device 120 may communicate with the 3GPP core network (such as the network element 110 in Figure 1) through the 3GPP access network, and the terminal device 120 may also communicate with the 3GPP core network through the non-3GPP interworking function (N3IWF). Network to communicate.
  • the terminal device 120 transmits data with the 3GPP core network through a session.
  • the terminal device 120 may transmit data with the 3GPP core network through sessions corresponding to different access technologies.
  • the terminal device 120 may Associate two sessions corresponding to different access technologies, and transmit data from the application layer through the two sessions. The method for associating sessions provided by this application will be described in detail below. For the sake of brevity, the following terminal devices and network elements are no longer accompanied by reference numerals.
  • Fig. 2 is a schematic flowchart of a method for associating a session provided by this application.
  • the method may be executed by a terminal device or a chip in the terminal device, and the method includes:
  • the terminal device receives first indication information, where the first indication information is used to indicate that the session can be used for eATSSS.
  • the first indication information may be a dedicated field in the message.
  • the terminal device receives a message that contains a dedicated field with a size of 1 bit.
  • the dedicated field has a value of "0”
  • the dedicated field has a value of "1”
  • the dedicated field with a value of "1” is the first indication information.
  • the foregoing first indication information may also be a field multiplexed in the message, and the specific form of the first indication information is not limited in this application.
  • S220 The terminal device associates the first session with the second session according to the first indication information.
  • the terminal device After receiving the first indication information, the terminal device determines that its own session can be used for eATSSS, and can associate the first session with the second session.
  • the first session and the second session are two different sessions established by the terminal device.
  • This application does not limit the specific manner in which the terminal device associates the first session and the second session.
  • the terminal device may save a parameter locally. Represents the association relationship between the first conversation and the second conversation.
  • the terminal device can also associate more sessions. After the terminal device associates multiple sessions according to the first indication information, the multiple sessions can be used to transmit application layer data at the same time, which improves the data transmission rate and flexibility
  • the first indication information may be carried in different messages, for example, the first indication information may be carried in a rule sent by a policy control function (PCF), or the first indication information may be carried in a session establishment acceptance message sent by SMF in.
  • PCF policy control function
  • Case 1 The first indication information is carried in the rules sent by the PCF.
  • the rule sent by the PCF can be a user equipment route selection policy (URSP).
  • the URSP contains one or more route selection descriptors (RSD).
  • RSD route selection descriptors
  • the RSD contains a dedicated field.
  • the dedicated field is the first Instructions.
  • the PCF sending the URSP may be the home PCF (home policy control function, H-PCF), or the roaming PCF (visited policy control function, V-PCF).
  • the RSD further includes the identifier of the associated URSP and/or the identifier of the associated RSD.
  • the URSP described above may be referred to as the first URSP, and the associated URSP may be referred to as the second URSP.
  • the first URSP is used to establish the first session, and the second URSP and/or the associated RSD is used to establish the second session.
  • the content of the RSD in the first URSP is shown in Table 1.
  • the eATSSS indication information in Table 1 is an example of the first indication information.
  • the terminal device After receiving the first URSP, the terminal device determines that two associated sessions can be established. The terminal device may send a session establishment request for establishing the first session to the SMF, and establish the first session based on the received session establishment accept message; subsequently, the terminal device may send a session request for establishing a second session to the SMF, the session request including the first session A session identifier of a session, so that SMF can associate the first session with the second session. Then, the terminal device can receive the session establishment accept message of the second session.
  • the session establishment accept message includes the identifier of the first session, indicating The SMF has associated the first session and the second session, and the terminal device may associate the first session and the second session according to the session establishment acceptance message of the second session.
  • Case 2 The first indication information is carried in the session establishment accept message sent by the SMF.
  • FIG. 3 shows a flowchart of another method for associating a session provided by the present application.
  • the method includes:
  • the terminal device establishes a third session.
  • the establishment acceptance message in the third session includes second indication information, and the second indication information indicates that the third session is used for eATSSS.
  • the terminal device may receive the establishment acceptance message of the third session from the SMF, and the process of establishing the third session by the terminal device may refer to the session establishment solution in the prior art, which will not be repeated here.
  • the terminal device sends an uplink non-access stratum (NAS) transmission message to the AMF.
  • the uplink NAS transmission message may include the identifier of the second session, and the single network slice selection assistance information (single network slice selection assistance information, S). -NSSAI), data network name (DNN) and N1 session management information (SM info).
  • the N1 session management information includes the second session establishment request.
  • the second session establishment request may also include the third The session identifier, where the second session establishment request is also used to request to associate the third session with the second session.
  • the terminal device will still try to associate the second session and the third session in S301 when the two sessions need to be associated.
  • the AMF may select the SMF according to information such as S-NSSAI, DNN, and local configuration, and send the parameters in the uplink NAS transmission message received from the terminal device to the SMF.
  • the SMF is an SMF determined by AMF to support eATSSS.
  • the SMF can determine whether the second session can be used for eATSSS according to information such as S-NSSAI, DNN, and local policy.
  • the SMF supporting eATSSS selects a session with the same characteristics as the second session from the sessions established on the SMF by the terminal device.
  • the session with the same characteristics is, for example, the first session, which supports The SMF of eATSSS associates the first session with the second session.
  • the same characteristics are, for example, the same PDU type, the same S-NSSAI, the same DNN, etc.
  • the first session may be the third session.
  • the SMF supporting eATSSS sends a second session establishment acceptance message to the terminal device.
  • the establishment acceptance message includes the first indication information.
  • the first indication information indicates that the session of the terminal device can be used for eATSSS.
  • the first indication information may be a dedicated field; the first indication information may also be a multiplexed field, for example, the first indication information is the identifier of the first session; or the first indication information may also be a dedicated field And the identity of the first conversation.
  • the first indication information in S303 may be a dedicated field. If the second session establishment request in S301 does not include the identifier of the third session, the first indication information in S303 needs to include the identifier of the associated session (ie, the identifier of the first session).
  • the AMF sends a second session establishment acceptance message to the terminal device.
  • the AMF sends the second session establishment acceptance message through a downlink NAS transmission message.
  • the terminal device After receiving the establishment acceptance message of the second session, the terminal device associates the second session with the first session, and notifies the upper layer of the addresses of the first session and the second session and the corresponding access technology (access), so that the application can use the first session.
  • One session and the second session transmit eATSSS data.
  • the terminal device After receiving the first URSP, the terminal device establishes the first session.
  • SMF can clearly indicate whether the first session can be used for eATSSS. For example, SMF sends second indication information to the terminal device through the establishment acceptance message of the first session, indicating that the first session can be used for eATSSS, then the terminal device can follow the second instruction The information sends the establishment request message of the second session and the identifier of the first session at the same time, so that the SMF can associate the first session with the second session.
  • the terminal device does not need to select the session to be associated, which reduces the burden on the terminal device.
  • the terminal device may not execute the instruction of the second instruction information, but from the established session Select one or more suitable sessions in the, and send the identification of the one or more suitable sessions to the SMF together with the establishment request message of the second session.
  • the terminal device can select a suitable session for association, which improves the flexibility of eATSSS.
  • the apparatus for associating a session includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • This application can divide the device associated with the session into functional units based on the above method examples.
  • each function can be divided into functional units, or two or more functions can be integrated into one processing unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • Fig. 4 is a schematic structural diagram of an apparatus for associating a session provided by the present application.
  • the device 400 includes a processing unit 410 and a receiving unit 420.
  • the processing unit 410 is configured to receive first indication information, where the first indication information is used to indicate that the session can be used for eATSSS;
  • the processing unit 410 is further configured to: associate the first session with the second session according to the first indication information;
  • the receiving unit 420 is specifically configured to: receive a first rule from the PCF, where the first rule includes the first indication information.
  • the first rule is used to establish the first session
  • the first rule includes the identifier of the second rule and/or the RSD identifier
  • the second rule and/or the RSD is used to establish The second conversation.
  • the first rule is used to establish the first session and the second session.
  • the apparatus 400 further includes a sending unit configured to send the identifier of the first session to the SMF through the establishment request of the second session.
  • the first indication information is carried in a session establishment accept message of the second session.
  • the first indication information includes an identifier of the first session.
  • the session establishment request message of the second session includes an identifier of the third session, and the session establishment request message is used to request to associate the third session with the second session.
  • the third session is the first session.
  • the receiving unit 420 receives the establishment acceptance message of the third session from the SMF, the establishment acceptance message includes second indication information, and the second indication information is used to indicate that the third session can be used for eATSSS Conversation.
  • the first indication information is carried in a first rule.
  • the first rule includes the identifier of the second rule and/or the identifier of the RSD.
  • the first indication information is carried in a session establishment accept message of the second session.
  • the first indication information includes an identifier of the first session and an identifier of the second session.
  • the session establishment request message of the second session includes an identifier of the third session, and the session establishment request message is used to request to associate the third session with the second session.
  • the third session is the first session.
  • the session establishment acceptance message of the third session includes second indication information, and the second indication information is used to indicate that the third session supports eATSSS.
  • Fig. 6 is a schematic structural diagram of another apparatus for associating a session provided by the present application.
  • the device 600 includes a processing unit 610, a sending unit 620, and a receiving unit 630. among them,
  • the receiving unit 630 is configured to receive an identifier of the second session and a session establishment request message, where the session establishment request message is used to request to associate the third session with the second session;
  • the processing unit 610 is configured to: determine an SMF supporting eATSSS from a plurality of SMFs;
  • the sending unit 620 is configured to send the session establishment request message to the SMF supporting eATSSS.
  • the receiving unit 630 is configured to: receive a session establishment accept message of the second session from the SMF supporting eATSSS, where the session establishment accept message includes first indication information, and the first indication information is used to indicate The session supports eATSSS; the sending unit 620 is configured to send the session establishment accept message to the terminal device.
  • the first indication information includes an identifier of the first session.
  • the first session is the third session.
  • FIG. 7 shows a schematic structural diagram of a device for associating a session provided by this application.
  • the dotted line in Figure 7 indicates that the unit or the module is optional.
  • the device 700 for associating a session may be used to implement the methods described in the foregoing method embodiments.
  • the device 700 associated with the session may be a terminal device or a network device or a chip.
  • the device 700 includes one or more processors 701, and the one or more processors 701 can support the device 700 to implement the method in the method embodiment corresponding to FIG. 2.
  • the processor 701 may be a general-purpose processor or a special-purpose processor.
  • the processor 701 may be a central processing unit (CPU).
  • the CPU can be used to control the device 700, execute software programs, and process data of the software programs.
  • the device 700 may further include a communication unit 705 to implement signal input (reception) and output (transmission).
  • the device 700 may be a chip, and the communication unit 705 may be an input and/or output circuit of the chip, or the communication unit 705 may be a communication interface of the chip, and the chip may be used as a terminal device or a network device or other wireless communication device made of.
  • the device 700 may be a terminal device or a network device
  • the communication unit 705 may be a transceiver of the terminal device or the network device
  • the communication unit 705 may be a transceiver circuit of the terminal device or the network device.
  • the device 700 may include one or more memories 702 with a program 704 stored thereon.
  • the program 704 can be run by the processor 701 to generate an instruction 703 so that the processor 701 executes the method described in the foregoing method embodiment according to the instruction 703.
  • the memory 702 may also store data.
  • the processor 701 can also read data stored in the memory 702 (for example, the content in the table above), the data can be stored in the same storage address as the program 704, and the data can also be stored in the program 704. Different storage addresses.
  • the processor 701 and the memory 702 may be provided separately or integrated together, for example, integrated on a single board of a network device or a system on chip (SOC) of a terminal device.
  • SOC system on chip
  • the device 700 may also include an antenna 706.
  • the communication unit 705 is configured to implement the transceiver function of the device 700 through the antenna 706.
  • the processor 701 may be a CPU, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices , For example, discrete gates, transistor logic devices, or discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • This application also provides a computer program product, which, when executed by the processor 701, implements the method described in any method embodiment in this application.
  • the computer program product may be stored in the memory 702, for example, a program 704.
  • the program 704 is finally converted into an executable object file that can be executed by the processor 701 after preprocessing, compilation, assembly, and linking.
  • This application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the method described in any method embodiment in this application is implemented.
  • the computer program can be a high-level language program or an executable target program.
  • the computer-readable storage medium is, for example, the memory 702.
  • the memory 702 may be a volatile memory or a non-volatile memory, or the memory 702 may include both a volatile memory and a non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above may be ignored or not implemented.
  • the device embodiments described above are merely illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system.
  • the coupling between the units or the coupling between the components may be direct coupling or indirect coupling, and the foregoing coupling includes electrical, mechanical or other forms of connection.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing associated objects, which means that there can be three types of relationships. For example, A and/or B can mean that there is A alone, and both A and B exist. There are three cases of B.
  • the character “/” in this text generally indicates that the associated objects before and after are in an "or” relationship.

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Abstract

La présente invention concerne un procédé d'association de session, qui comprenant : la réception, par un dispositif de terminal, de premières informations d'indication, les premières Informations d'indication étant utilisées pour indiquer qu'une session peut être utilisée pour eATSSS (S210) ; et l'association, par le dispositif de terminal, d'une première session et d'une seconde session selon les premières informations d'indication (S220). Un élément de réseau envoie, au dispositif de terminal, des informations d'indication qui indiquent qu'une session du dispositif de terminal peut être utilisée pour eATSSS, de sorte que le dispositif de terminal puisse associer une pluralité de sessions et utiliser la pluralité de sessions pour transmettre des données en même temps, améliorant le débit et la flexibilité de transmission de données.
PCT/CN2019/091785 2019-06-18 2019-06-18 Procédé et appareil d'association de session Ceased WO2020252667A1 (fr)

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CN201980097135.5A CN113994762B (zh) 2019-06-18 2019-06-18 关联会话的方法和装置

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