CN113994762B - Method and device for associating session - Google Patents
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- CN113994762B CN113994762B CN201980097135.5A CN201980097135A CN113994762B CN 113994762 B CN113994762 B CN 113994762B CN 201980097135 A CN201980097135 A CN 201980097135A CN 113994762 B CN113994762 B CN 113994762B
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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
Abstract
The application provides a method for associating sessions, which comprises the following steps: the terminal device receives first indication information, wherein the first indication information is used for indicating that the session can be used for eATSSS (S210); the terminal device associates a first session and a second session according to the first indication information (S220). The network element sends the indication information indicating that the session of the terminal equipment can be used for the eATSSS to the terminal equipment, so that the terminal equipment can associate a plurality of sessions and simultaneously transmit data by using the plurality of sessions, and the data transmission rate and flexibility are improved.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and apparatus for associating sessions.
Background
Fifth generation (5) th The generation, 5G) system supports a protocol data unit (protocol data unit, PDU) connection service, i.e. a service for transmitting PDU packets between a terminal device and a data network, a data channel for transmitting PDU packets may be called a PDU session, which is simply called a session.
The terminal device may transmit data through a single session belonging to different access networks, e.g. the terminal device may transmit data through a session belonging to the third generation partnership project (3 rd generation partnership project,3 GPP) access network or a non-3GPP access network establishes a session and transfers data between the data network and the session. However, there is currently no scheme how to transmit data over multiple sessions belonging to different access networks.
Disclosure of Invention
The application provides a method and a device for associating sessions, which can realize data transmission through a plurality of sessions belonging to different access networks.
In a first aspect, a method for associating sessions is provided, comprising: the terminal equipment receives first indication information, wherein the first indication information is used for indicating that a session can be used for enhancing access service steering switch splitting (enhanced access traffic steering switching splitting, eATSSS); and the terminal equipment associates a first session and a second session according to the first indication information.
In a second aspect, there is provided another method of associating a session, comprising: the network element sends first indication information to the terminal equipment, wherein the first indication information is used for indicating that the session can be used for the eATSSS.
In a third aspect, there is provided a method of associating a session, comprising: a mobility management function (access and mobility management function, AMF) receiving an identification of a second session and a session establishment request message requesting to associate a third session with the second session; the AMF determining a session management function (session management function, SMF) supporting etasss from a plurality of SMFs; the SMF sends the session establishment request message to the SMF supporting eATSSS.
In a fourth aspect, there is provided an apparatus for associating a session, for performing the method in any of the first to third aspects, or for performing the method in each implementation of any of the first to third aspects.
In particular, the means for associating a session comprises functional modules for performing the method of the first aspect or implementations thereof described above.
In a fifth aspect, an apparatus for associating a session is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, executing the method in any one of the first aspect to the third aspect, or executing the method in each implementation manner in any one of the first aspect to the third aspect.
A sixth aspect provides a chip for performing the method of any one of the first to third aspects or for performing the method of each implementation of any one of the first to third aspects.
Specifically, the chip includes: a processor for calling and running a computer program from a memory, such that a device on which the chip is mounted is for performing the method of any of the above first to third aspects or for performing the method of each implementation of any of the above first to third aspects.
In a seventh aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above first to third aspects or perform the method of each implementation of any one of the above first to third aspects.
In an eighth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to third aspects described above, or to perform the method of each implementation of any one of the first to third aspects described above.
A ninth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to third aspects described above, or to perform the method of each implementation of any one of the first to third aspects described above.
Through the technical scheme, the network element sends the indication information indicating that the session of the terminal equipment can be used for the eATSSS to the terminal equipment, so that the terminal equipment can associate a plurality of sessions and simultaneously transmit data by using the plurality of sessions, and the data transmission rate and flexibility are improved.
Drawings
FIG. 1 is a schematic diagram of a communication system suitable for use with the present application;
FIG. 2 is a schematic diagram of a method of associating sessions provided by the present application;
FIG. 3 is a schematic diagram of another method of associating sessions provided by the present application;
FIG. 4 is a schematic diagram of an apparatus for associating sessions provided by the present application;
FIG. 5 is a schematic diagram of another apparatus for associating sessions provided by the present application;
FIG. 6 is a schematic diagram of yet another apparatus for associating sessions provided by the present application;
fig. 7 is a schematic diagram of a device for associating sessions provided by the present application.
Detailed Description
The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Turning first to the application scenario of the present application, fig. 1 is a schematic diagram of a communication system suitable for use with the present application.
The communication system 100 comprises a network element 110 and a terminal device 120. Terminal device 120 may be in communication with network element 110. For example, the terminal device 120 may communicate with the network element 110 through radio waves, or may communicate with the network element 110 through an optical fiber or cable.
In the present application, the terminal device 120 may include various handheld devices, vehicle mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, such as a third generation partnership project (3 rd generation partnership project,3 GPP) defined User Equipment (UE), mobile Station (MS), soft terminal, home gateway, set top box, etc.
The network element 110 may be an access network device or a core network device compliant with 3GPP specifications, e.g. fifth generation (5 th generation, 5G) base stations (gNB) or AMFs in a communication system. The network element 110 may also be a non-3GPP (non-3 GPP) network device, such as an Access Gateway (AGF). The network element 110 may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
The communication system 100 is merely illustrative, and a communication system to which the present application is applied is not limited thereto.
The terminal device 120 may transmit data using different access technologies. For example, the terminal device 120 may communicate with a 3GPP core network (e.g., the network element 110 in FIG. 1) via a 3GPP access network, and the terminal device 120 may also communicate with the 3GPP core network via a non-3GPP interworking function (non-3GPP interworking function,N3IWF). The terminal device 120 transmits data with the 3GPP core network through a session, and in order to improve the rate and flexibility of transmitting data by the terminal device 120, the terminal device 120 may transmit data with the 3GPP core network through a session corresponding to different access technologies, for example, 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 of associating sessions provided by the present application will be described in detail below. For brevity, the terminal equipment and network elements will not be attached with reference numerals.
Fig. 2 is a schematic flow chart of a method for associating sessions provided by the present application. The method may be performed by a terminal device or a chip in a terminal device, the method comprising:
s210, the terminal device receives first indication information, where the first indication information is used to indicate that the session can be used for the etasss.
The first indication information may be a dedicated field in the message. For example, the terminal device receives a message including a dedicated field with a size of 1 bit, and when the value of the dedicated field is "0", indicates that the session of the terminal device cannot be used for the etasss; when the value of the special field is '1', indicating that the session of the terminal equipment can be used for eATSSS; the special field with the value of "1" is the first indication information.
The 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 the present application.
S220, the terminal equipment associates the first session and the second session according to the first indication information.
After receiving the first indication information, the terminal equipment determines that the session of the terminal equipment can be used for the eATSSS, and can associate the first session with the second session.
The specific manner in which the terminal device associates the first session with the second session is not limited, for example, the terminal device may locally store a parameter that indicates an association relationship between the first session and the second session.
In addition, the terminal device may associate more sessions. After the terminal equipment associates a plurality of conversations according to the first indication information, the conversations can be used for transmitting data of an application layer, so that the data transmission rate and flexibility are improved.
The first indication information may be carried in a different message, for example, the first indication information is carried in a rule sent by the policy control function (policy control function, PCF), or the first indication information is carried in a session establishment acceptance message sent by the SMF.
Next, these two cases will be described separately.
In the first case, the first indication information is carried in a rule sent by the PCF.
The rule sent by the PCF may be a user equipment routing policy (user equipment route selection policy, urs) containing one or more routing descriptors (route selection descriptor, RSD), the RSD containing a dedicated field, i.e. the first indication information. The PCF that transmits the urs may be a home PCF (home policy control function, H-PCF) or a roaming PCF (visited policy control function, V-PCF).
Optionally, the RSD further includes an identification of the associated urs and/or an identification of the associated RSD, where the urs described above may be referred to as first urs and the associated urs as second urs. The first urs are used to establish a first session and the second urs and/or associated RSDs are used to establish a second session. The contents of the RSD in the first urs are shown in table 1.
TABLE 1
An example of the first indication information is the etasss indication information in table 1. After receiving the first urs, 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 acceptance message; the terminal device may then send a session request to the SMF to establish the second session, the session request including a session identification of the first session, such that the SMF associates the first session with the second session, and the terminal device may then receive a session establishment acceptance message for the second session, optionally including an identification of the first session, indicating that the SMF has associated the first session with the second session, and the terminal device may associate the first session with the second session according to the session establishment acceptance message for the second session.
In the second case, the first indication information is carried in a session establishment acceptance message sent by the SMF.
Next, a case two will be described with reference to fig. 3. Fig. 3 shows a flow chart of a method of another association session provided by the present application. The method comprises the following steps:
s300, the terminal equipment establishes a third session. Optionally, the establishment acceptance message at the third session contains second indication information indicating that the third session is for the etats S. 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 a scheme of establishing the session in the prior art, which is not described herein.
S301, the terminal device sends an uplink non-access stratum (NAS) transport message to the AMF, where the uplink NAS transport message may include an identifier of a second session, single network slice selection assistance information (single network slice selection assistance information, S-nsai), a data network name (data network name, DNN) and N1 session management information (SM info), and the N1 session management information includes a second session establishment request, optionally, the second session establishment request may further include an identifier of a third session, where the second session establishment request is further used to request association of the third session with the second session.
It should be noted that, even if the establishment acceptance message of the third session in S300 does not include the second indication information, the terminal device may still attempt to associate the second session with the third session in S301 when it is required to associate the two sessions.
S302, AMF can select SMF according to S-NSSAI, DNN, local configuration, and the like, and send parameters in uplink NAS transmission message received from terminal equipment to SMF. Optionally, the SMF is an AMF-determined SMF supporting etasss.
S303, when the SMF supports eATSSS, the SMF can judge whether the second session can be used for eATSSS according to the information of S-NSSAI, DNN, local strategy and the like. When the second session is available for the etasss, the smass supporting the etasss selects a session having the same characteristics as the second session, such as the first session, from among the sessions established by the terminal device on the SMF, the SMF supporting the etasss associating the first session with the second session.
The same characteristics are for example PDU type identical, S-nsai identical, DNN identical, etc., alternatively the first session may be a third session when the third session is identical to the second session in nature.
Subsequently, the SMF supporting the etasss sends a second session establishment acceptance message to the terminal device, the establishment acceptance message including first indication information indicating that the session of the terminal device is available for the etasss. Wherein 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 an identifier of the first session; alternatively, the first indication information may be a dedicated field and an identification of the first session.
Alternatively, if the second session establishment request in S301 includes an identification of the third session, and the first session associated with the second session is the third session, the first indication information in S303 may be a dedicated field. If the second session establishment request in S301 does not contain the identity of the third session, the first indication information in S303 needs to contain the identity of the associated session (i.e. the identity of the first session).
S304, the AMF sends a second session establishment acceptance message to the terminal equipment, and optionally, the AMF sends the second session establishment acceptance message through a downlink NAS transmission message.
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 addresses of the first session and the second session and corresponding access technologies (access), so that the application can transmit the etasss data using the first session and the second session.
The above two cases are two embodiments provided by the present application, and embodiments obtained based on the inventive concept of the present application are not limited thereto. For example, both embodiments may also be implemented in combination.
After receiving the first URSP, the terminal device establishes a first session. The SMF may explicitly indicate whether the first session can be used for the etasss, for example, the SMF sends second indication information to the terminal device through an establishment acceptance message of the first session, indicating that the first session can be used for the etass S, and the terminal device may send an establishment request message of the second session and an identification of the first session at the same time according to the second indication information, so that the SMF associates the first session and the second session. In the scheme, the terminal equipment does not need to select the session needing to be associated, so that the burden of the terminal equipment is reduced.
Optionally, after receiving the second indication information sent by the SMF, if the terminal device determines that the first session is not applicable to the etasss, the terminal device may not perform indication of the second indication information, but select one or more suitable sessions from the established sessions, and send the identification of the one or more suitable sessions and the establishment request message of the second session to the SMF. In the scheme, the terminal equipment can select a proper session for association, so that the flexibility of the eATSSS is improved.
Examples of the method of associating sessions provided by the present application are described above in detail. It will be appreciated that the means for associating sessions, in order to achieve the above-described functions, comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The present application may divide functional units of devices associated with sessions according to the above-described method example, for example, each function may be divided into each functional unit, or two or more functions may be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional units. It should be noted that the division of the units in the present application is illustrative, and is merely a logic function division, and other division manners may be implemented in practice.
Fig. 4 is a schematic structural diagram of a device for associating sessions according to the present application. The apparatus 400 comprises a processing unit 410 and a receiving unit 420. Wherein, the processing unit 410 is configured to: receiving first indication information, wherein the first indication information is used for indicating that the session can be used for eATSSS two
The processing unit 410 is further configured to: associating a first session with a second session according to the first indication information;
optionally, the receiving unit 420 is specifically configured to: a first rule is received from the PCF, the first rule including the first indication information.
Optionally, the first rule is used for establishing the first session, the first rule includes an identification of a second rule and/or an identification of an RSD, and the second rule and/or the RSD is used for establishing the second session.
Optionally, the first rule is used to establish the first session and the second session.
Optionally, the apparatus 400 further comprises a sending unit, configured to send the identifier of the first session to the SMF through the request for establishing the second session.
Optionally, the first indication information is carried in a session establishment acceptance message of the second session.
Optionally, the first indication information includes an identification of the first session.
Optionally, the session establishment request message of the second session includes an identifier of a third session, and the session establishment request message is used for requesting to associate the third session with the second session.
Optionally, the third session is the first session.
Optionally, the receiving unit 420 receives an establishment acceptance message of the third session from the SMF, where the establishment acceptance message includes second indication information, where the second indication information is used to indicate that the third session can be used for a session of the etasss.
Fig. 5 is a schematic structural diagram of another apparatus for associating sessions according to the present application. The apparatus 500 comprises a transmitting unit 510. Wherein, the sending unit 510 is configured to: and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating that the session can be used for eATSSS.
Optionally, the first indication information is carried in a first rule.
Optionally, the first rule includes an identification of the second rule and/or an identification of the RSD.
Optionally, the first indication information is carried in a session establishment acceptance message of the second session.
Optionally, the first indication information includes an identification of a first session and an identification of the second session.
Optionally, the session establishment request message of the second session includes an identifier of a third session, and the session establishment request message is used for requesting to associate the third session with the second session.
Optionally, the third session is the first session.
Optionally, the session establishment acceptance message of the third session includes second indication information, where the second indication information is used to indicate that the third session supports the eATS S.
Fig. 6 is a schematic structural diagram of another apparatus for associating sessions according to the present application. The apparatus 600 includes a processing unit 610, a transmitting unit 620, and a receiving unit 630. Wherein, the liquid crystal display device comprises a liquid crystal display device,
the receiving unit 630 is configured to: receiving an identification of a second session and a session establishment request message, wherein the session establishment request message is used for requesting to associate a third session with the second session;
the processing unit 610 is configured to: determining an SMF supporting the etasss from a plurality of SMFs;
the transmitting unit 620 is configured to: and sending the session establishment request message to the SMF supporting eATSSS.
Optionally, the receiving unit 630 is configured to: receiving a session establishment acceptance message of the second session from the SMF supporting the etatss, the session establishment acceptance message including first indication information for indicating that the session supports the etatss S; the transmitting unit 620 is configured to: and sending the session establishment acceptance message to the terminal equipment.
Optionally, the first indication information includes an identification of the first session.
Optionally, the first session is the third session.
Fig. 7 shows a schematic structural diagram of a device for associating sessions according to the present application. The dashed line in fig. 7 indicates that the unit or the module is optional. The device 700 associated with a session may be used to implement the method described in the method embodiments above. The device 700 of the association session may be a terminal device or a network device or a chip.
The device 700 includes one or more processors 701, which one or more processors 701 may support the device 700 to implement the method in the corresponding method embodiment of fig. 2. The processor 701 may be a general-purpose processor or a special-purpose processor. For example, the processor 701 may be a central processing unit (central processing unit, CPU). The CPU may be used to control the device 700, execute a software program, and process data of the software program. The device 700 may further comprise a communication unit 705 for enabling input (receiving) and output (transmitting) of signals.
For example, the device 700 may be a chip, 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, which may be an integral part of a terminal device or a network device or other wireless communication device.
For another example, 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, or the communication unit 705 may be a transceiver circuit of the terminal device or the network device.
The apparatus 700 may include one or more memories 702 having a program 704 stored thereon, the program 704 being executable by the processor 701 to generate instructions 703 such that the processor 701 performs the methods described in the method embodiments above in accordance with the instructions 703. Optionally, the memory 702 may also have data stored therein. Optionally, processor 701 may also read data stored in memory 702 (e.g., the contents of the table above), which may be stored at the same memory address as program 704, or which may be stored at a different memory address than program 704.
The processor 701 and the memory 702 may be provided separately or may be integrated together, for example, on a board of a network device or a System On Chip (SOC) of a terminal device.
The device 700 may also include an antenna 706. The communication unit 705 is used to realize the transceiving function of the device 700 through the antenna 706.
The specific manner in which the processor 701 performs the method of associating sessions may be found in the relevant description of the method embodiments described above.
It should be understood that the steps of the above-described method embodiments may be accomplished by logic circuitry in the form of hardware or instructions in the form of software in the processor 701. The processor 701 may be a CPU, digital signal processor (digital signal processor, DSP), application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA), or other programmable logic device such as discrete gates, transistor logic, or discrete hardware components.
The application also provides a computer program product which, when executed by a processor 701, implements the method according to any of the method embodiments of the application.
The computer program product may be stored in the memory 702, for example, the program 704, and the program 704 is finally converted into an executable object file capable of being executed by the processor 701 through preprocessing, compiling, assembling, and linking.
The application also provides a computer readable storage medium having stored thereon a computer program which when executed by a computer implements the method according to any of the method embodiments of the application. The computer program may be a high-level language program or an executable object program.
Such as memory 702. The memory 702 may be volatile memory or nonvolatile memory, or the memory 702 may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and unit may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided by the present application, the disclosed systems, devices, and methods may be implemented in other manners. For example, some features of the method embodiments described above may be omitted, or not performed. The above-described apparatus embodiments are merely illustrative, the division of units is merely a logical function division, and there may be additional divisions in actual implementation, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the elements or the coupling between the elements may be direct or indirect, including electrical, mechanical, or other forms of connection.
It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely one association relationship describing the associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In summary, the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (44)
1. A method of associating sessions, comprising:
the terminal equipment receives first indication information, wherein the first indication information is used for indicating that a session can be used for enhancing access service steering switch splitting (eATSSS);
the terminal equipment associates a first session and a second session according to the first indication information, the first session and the second session belong to different access networks,
the terminal equipment receives first indication information, which comprises the following steps:
the terminal device receiving a first rule from a Policy Control Function (PCF), the first rule comprising the first indication information, the first rule comprising a user equipment routing policy (urs p); and/or
The first indication information is carried in a session establishment acceptance message of the second session.
2. The method according to claim 1, wherein the first rule is used to establish the first session, the first rule comprising an identification of a second rule and/or an identification of a routing descriptor (RSD), the second rule and/or the RSD being used to establish the second session, the second rule comprising an associated urs.
3. The method of claim 1, wherein the first rule is for establishing the first session and the second session.
4. A method according to any one of claims 1 to 3, further comprising:
the terminal device sends an identification of the first session to a Session Management Function (SMF) via a request for establishment of the second session.
5. The method of claim 1, wherein the first indication information comprises an identification of the first session.
6. The method of claim 5, wherein the second session includes an identification of a third session in a session establishment request message for requesting association of the third session with the second session.
7. The method of claim 6, wherein the third session is the first session.
8. The method according to claim 6 or 7, characterized in that the method further comprises:
the terminal device receives a session establishment acceptance message of the third session from the SMF, the session establishment acceptance message including second indication information for indicating that the third session can be used for a session of the etasss.
9. A method of associating sessions, comprising:
the network element sends first indication information to the terminal device, the first indication information being used to indicate that the session can be used to enhance access service diversion handover split (etasss) to associate a first session and a second session, the first session and the second session belonging to different access networks,
wherein the first indication information is carried in a first rule, the network element is a Policy Control Function (PCF), the first rule comprises a user equipment routing policy (urs p), and/or the first indication information is carried in a session establishment acceptance message of the second session.
10. The method of claim 9, wherein the first rule comprises an identification of a second rule and/or an identification of a routing descriptor (RSD), the second rule comprising an associated urs.
11. The method of claim 9, wherein the first indication information comprises an identification of a first session and an identification of the second session.
12. The method of claim 11, wherein the second session includes an identification of a third session in a session establishment request message for requesting association of the third session with the second session.
13. The method of claim 12, wherein the third session is the first session.
14. The method according to claim 12 or 13, wherein the session establishment acceptance message of the third session comprises second indication information indicating that the third session supports etasss.
15. The method of claim 9, wherein the method is performed by a Session Management Function (SMF) when the first indication information is carried in a session establishment accept message for the second session.
16. A method of associating sessions, comprising:
a mobility management function (AMF) receives an identification of a second session and a session establishment request message, wherein the session establishment request message is used for requesting to associate a third session with the second session, and the third session and the second session belong to different access networks;
the AMF determining, from a plurality of Session Management Functions (SMFs), an SMF that supports enhanced access service diversion handover split (etatsss);
the AMF sends the session establishment request message to the SMF supporting eATSSS.
17. The method as recited in claim 16, further comprising:
the AMF receives a session establishment acceptance message of the second session from the SMF supporting the eATSSS, wherein the session establishment acceptance message comprises first indication information, and the first indication information is used for indicating that the session supports the eATSSS;
the AMF sends the session establishment acceptance message to the terminal equipment.
18. The method of claim 17, wherein the first indication information comprises an identification of the first session.
19. The method of claim 18, wherein the first session is the third session.
20. An apparatus for associating sessions, comprising a receiving unit and a processing unit,
the receiving unit is used for: receiving first indication information, wherein the first indication information is used for indicating that a session can be used for enhancing access service steering switch splitting (eATSSS);
the processing unit is used for: associating a first session and a second session according to the first indication information, the first session and the second session belonging to different access networks,
the receiving unit is specifically configured to:
receiving a first rule from a Policy Control Function (PCF), the first rule comprising the first indication information, the first rule comprising a user equipment routing policy (urs p); and/or
The first indication information is carried in a session establishment acceptance message of the second session.
21. The apparatus of claim 20, wherein the first rule is for establishing the first session, the first rule comprising an identification of a second rule and/or an identification of a routing descriptor (RSD), the second rule and/or the RSD being for establishing the second session, the second rule comprising an associated urs.
22. The apparatus of claim 20, wherein the first rule is for establishing the first session and the second session.
23. The apparatus according to any one of claims 20 to 22, further comprising a transmitting unit configured to:
the identification of the first session is sent to a Session Management Function (SMF) by a request for establishment of the second session.
24. The apparatus of claim 20, wherein the first indication information comprises an identification of the first session.
25. The apparatus of claim 24, wherein a session establishment request message for the second session includes an identification of a third session, the session establishment request message being used to request association of the third session with the second session.
26. The apparatus of claim 25, wherein the third session is the first session.
27. The apparatus according to claim 25 or 26, wherein the receiving unit is further configured to:
and receiving a session establishment acceptance message of the third session from the SMF, wherein the session establishment acceptance message comprises second indication information, and the second indication information is used for indicating that the third session can be used for the eATSSS session.
28. An apparatus for associating sessions, comprising a processing unit and a sending unit, wherein the processing unit is configured to control the sending unit to perform:
sending first indication information to the terminal device, the first indication information being used to indicate that a session can be used to enhance access traffic diversion handover split (etasss) to associate a first session and a second session, the first session and the second session belonging to different access networks,
wherein the first indication information is carried in a first rule, the apparatus is a Policy Control Function (PCF), the first rule comprises a user equipment routing policy (urs p), and/or the first indication information is carried in a session establishment acceptance message of a second session.
29. The apparatus of claim 28, wherein the first rule comprises an identification of a second rule and/or an identification of a routing descriptor (RSD), the second rule comprising an associated urs.
30. The apparatus of claim 28, wherein the first indication information comprises an identification of a first session and an identification of the second session.
31. The apparatus of claim 30, wherein a session establishment request message for the second session includes an identification of a third session, the session establishment request message being used to request association of the third session with the second session.
32. The apparatus of claim 31, wherein the third session is the first session.
33. The apparatus according to claim 31 or 32, wherein the session establishment acceptance message of the third session comprises second indication information indicating that the third session supports etasss.
34. The apparatus of claim 28, wherein the apparatus is an SMF when the first indication information is carried in a session setup accept message for the second session.
35. An apparatus for associating sessions, comprising a processing unit, a receiving unit, and a transmitting unit:
the receiving unit is used for: receiving an identifier of a second session and a session establishment request message, wherein the session establishment request message is used for requesting to associate a third session with the second session, and the third session and the second session belong to different access networks;
the processing unit is used for: determining an enhanced access service diversion handover (eATSSS) supporting Session Management Functions (SMFs) from a plurality of SMFs;
the transmitting unit is used for: and sending the session establishment request message to the SMF supporting eATSSS.
36. The apparatus of claim 35, wherein the receiving unit is further configured to:
receiving a session establishment acceptance message of the second session from the SMF supporting the etasss, the session establishment acceptance message including first indication information for indicating that the session supports the etasss;
and sending the session establishment acceptance message to the terminal equipment.
37. The apparatus of claim 36, wherein the first indication information comprises an identification of a first session.
38. The apparatus of claim 37, wherein the first session is the third session.
39. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 8.
40. A network device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to perform the method of any of claims 9 to 19.
41. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 8.
42. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 9 to 19.
43. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 8.
44. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 9 to 19.
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| PCT/CN2019/091785 WO2020252667A1 (en) | 2019-06-18 | 2019-06-18 | Session association method and apparatus |
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| WO2023212960A1 (en) * | 2022-05-06 | 2023-11-09 | 北京小米移动软件有限公司 | Method and device for implementing extended reality service policy |
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