CN110121897A - A kind of method and apparatus of session establishment - Google Patents

A kind of method and apparatus of session establishment Download PDF

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Publication number
CN110121897A
CN110121897A CN201780081592.6A CN201780081592A CN110121897A CN 110121897 A CN110121897 A CN 110121897A CN 201780081592 A CN201780081592 A CN 201780081592A CN 110121897 A CN110121897 A CN 110121897A
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China
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entity
information
pdu session
smf entity
smf
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CN201780081592.6A
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CN110121897B (en
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杨皓睿
金辉
欧阳国威
窦凤辉
李小娟
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1446—Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relates to a kind of method and apparatus of session establishment.This method specifically includes, and: UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so that AMF entity is when determining that the switching between access technology is supported in PDU session, according to the registration scenarios of UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated.SMF entity is not in all cases, just to update DNN to UDM entity as a result, saves signal resource.

Description

A kind of method and apparatus of session establishment Technical field
The invention relates to field of communication technology more particularly to a kind of method and apparatus of session establishment.
Background technique
In 5G network, user equipment (user equipment, UE it) can be registered in the core network by third generation partner program (the third generation partnership project, 3GPP) access technology and Non-3GPP access technology.For example, Non-3GPP access technology can be WLAN (wireless local area networks, WLAN) technology.When registration, access and mobile management entity (access and mobility management function, it AMF) can be to uniform data management (unified data management, UDM) entity updates the AMF ID and address that UE is currently registered, UDM physically saves the corresponding AMF ID of each access technology type (access technology type, AT type) and/or address.
Protocol Data Unit (packet data unit, PDU) session establishment can be carried out by corresponding access technology respectively when UE is needed using business.Also, UE, which can choose, to be switched to another access technology by a kind of PDU session that access technology is established.
In PDU session switching, UDM entity is notified that the AMF entity of UE registration, the signing information of UE after PDU session switching.But, conversation management functional (session management function, SMF) entity and UDM entity are not aware that the access technology that UE is used in PDU session handoff procedure, when the corresponding information of update PDU session, it is notified that the AMF entity of all access technology registrations, but the AMF entity of access technology registration that uses of current PDU session is not required to be updated, wastes signaling.
Summary of the invention
The embodiment of the present application provides a kind of session establishing method and equipment.To realize during session establishment, less signal resource is occupied.
In a first aspect, the embodiment of the present application provides a kind of session establishing method.This method comprises: UE sends first message to AMF entity, such as the first message can be Non-Access Stratum (Non-Access Stratum, NAS) message；The first message includes the first information, such as the first information can be N1 session management (session management, SM) information；The first information includes the information that PDU session is established in request, and the information which establishes PDU session includes the first parameter, for example, first parameter can be switching instruction；First parameter is used to indicate the switching between PDU session support different access technologies, such as supports the switching between 3GPP access technology and non-3 GPP access technology.Or, first parameter is used to indicate data network title (the data network name that SMF entity is used to UDM registers entities PDU session, DNN) and the information of SMF entity, wherein the information of SMF entity includes mark and/or the address of SMF entity.UE receives the second message that AMF entity is sent, which includes the second information, such as second information can be N1SM information, which includes the information that PDU session establishment receives.By the embodiment of the present application, UE can be to AMF reality Whether the PDU session that body indicates that its request is established supports switching between access technology, when so as to switching between AMF entity determines that access technology is supported in PDU session, according to the registration scenarios of UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated.SMF entity is not in all cases, just to UDM entity more new information, alternatively, not all situation all updates the corresponding DNN of UE, saves signal resource when SMF entity is updated to UDM entity as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities.
In optionally being realized at one, before UE sends first message to AMF entity, further includes: UE determines first parameter according at least one in user equipment strategy or business.Pass through the embodiment of the present application, UE can judge whether a PDU session supports the switching between access technology according to the access style in user equipment strategy, or according to specific Business Stream, such as traffic stream identifier, determine whether the corresponding PDU session of the Business Stream supports the switching between different access technologies.
In another optional realization, when the access style in user equipment strategy indicates that a variety of access technologies or user equipment strategy do not limit access style, UE determines the first parameter.For example, then UE determines the first parameter when indicating 3GPP access technology and non-3 GPP access technology in access style in user equipment strategy, which is used to indicate the PDU session and supports switching between 3GPP access technology and non-3 GPP access technology.It may be implemented by the embodiment of the present application, the switching between whether PDU session supports access technology determined according to the access style in user equipment strategy.
In another is optionally realized, UE sends first message to AMF entity, aforementioned first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in the request includes the first parameter, first parameter is used to indicate mark and/or the address for DNN the and SMF entity that SMF entity is used to UDM registers entities PDU session, it specifically includes: when UE is registered by a kind of access technology, or, when the AMF entity difference that UE is registered and registered by a variety of access technologies, UE sends first message to AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in the request includes the first parameter, first parameter is used to indicate SMF entity The information of the DNN and SMF entity used to UDM registers entities PDU session.By the embodiment of the present application, when UE determines that it is registered by a kind of access technology, alternatively, UE can just send the first message for carrying the first parameter to AMF entity when being registered by a variety of access technologies and being registered in different AMF entities, signal resource occupies few.
Pass through the embodiment of the present application, UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so as to when AMF entity determine PDU session support access technology between switching when, according to the registration scenarios of UE, it is determined whether need to UDM entity update DNN.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated.SMF entity is not that in all cases, just to UDM entity more new information, alternatively, SMF entity to UDM entity when updating, not all situation all updates DNN as a result, saves signal resource.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.
Second aspect, the embodiment of the present application provide a kind of session establishing method.It include: that AMF entity receives the first message that UE is sent, the first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in the request includes the first parameter, first parameter is used to indicate the switching between PDU session support different access technologies, or indicate the information of DNN and the SMF that SMF entity is used to UDM registers entities PDU session, wherein the information of SMF entity includes mark and/or the address of SMF entity；AMF entity sends the request for calling the first service of SMF entity to SMF entity, and the request of the first service of calling SMF entity includes the first information；The AMF entity receives the response of the first service for the calling SMF entity that SMF entity is sent, and the response of the first service of calling SMF entity includes the second information, which includes PDU session establishment received message；AMF entity sends the 4th message to UE, and the 4th message includes the second information.Pass through the embodiment of the present application, when the switching between the PDU session support access technology that AMF entity receives its request foundation of the instruction of UE transmission, registration scenarios of the AMF entity further according to UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated by AMF.SMF entity is not in all cases, just to UDM entity more new information as a result, alternatively, not all situation all updates DNN when SMF entity is updated to UDM entity, UE is also not in all cases, and the NAS message of transmission all carries the first parameter, saves signal resource.
In optionally being realized at one, the first message that UE is sent is received in AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in the request includes the first parameter, first parameter is used to indicate after the switching that PDU session is supported between different access technologies, further includes: AMF entity determines the second parameter, which is used to indicate the UE and is registered in the AMF by a kind of access technology.At this time, AMF entity sends the request for calling the first service of SMF entity to SMF entity, the request of the first service of calling SMF entity includes the first information, specifically include: AMF entity sends the request for calling the first service of the SMF entity to SMF entity, and the request of the first service of the calling SMF entity includes the first information and the second parameter.Pass through the embodiment of the present application, when AMF entity receives the first message of UE transmission, AMF determines the registration scenarios of UE, and when determining that UE is registered on AMF by a kind of access technology, the request of the first service of the calling SMF entity including the first parameter and the second parameter is sent to SMF entity.In other situations, the request of the first service of the callings SMF entity sent to SMF entity does not need the second parameter of carrying, saves signaling with this.
By the embodiment of the present application, AMF entity is when receiving its switching between requesting the PDU session established to support access technology of the instruction of UE transmission, registration scenarios of the AMF entity further according to UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated by AMF.SMF entity is not in all cases, just to update DNN to UDM entity as a result, and UE is also not in all cases, and the NAS message of transmission all carries the first parameter, saves signal resource.
The third aspect, the embodiment of the present application provide a kind of session establishing method.It include: the request that SMF entity receives the first service for the calling SMF entity that AMF entity is sent, the request of the first service of calling SMF entity includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in the request includes the first parameter, first parameter indicates that the switching between different access technologies is supported in PDU session, or indicate the information of DNN and SMF that SMF entity is used to UDM registers entities PDU session, wherein, the information of SMF entity includes mark and/or the address of SMF entity；SMF entity sends the response for calling the first service of SMF entity to the first AMF entity, and calling the response of the first service of SMF entity includes the second information, which includes the information that PDU session establishment receives. Just information can be sent to UDM entity after receiving corresponding instruction by the embodiment of the present application SMF entity, alternatively, when SMF entity is updated to UDM entity, just updating DNN after receiving corresponding instruction, saving signal resource.
In an optional realization, when the switching between different access technologies is supported in the instruction PDU session of the first parameter, the request for calling the first service of the SMF entity further includes the second parameter, which, which is used to indicate, establishes the UE of PDU session and be registered in the first AMF by a kind of access technology.By the embodiment of the present application, switching of the SMF between determining UE support different access technologies, and only registered by a kind of access technology on current AMF entity is, at this point, SMF entity updates the signing information of UE to UDM entity again, the signing information of the UE includes DNN.
In another optional realization, further includes: SMF entity sends the request for calling the first service of UDM entity to UDM entity, and the request of the first service of calling UDM entity includes the information for the DNN and SMF entity that PDU session uses.
By the embodiment of the present application, SMF can just update after receiving corresponding instruction to UDM entity, alternatively, SMF entity just sends DNN to UDM entity after receiving corresponding instruction, save signal resource.
Fourth aspect, the embodiment of the present application provide a kind of session establishing method.This method comprises: UDM entity receives the request of the first service for the calling UDM entity that SMF entity is sent, the request of the first service of calling UDM entity includes access style, and the corresponding UE of PDU session which is used to indicate SMF entity management passes through the first access technology in the first AMF registers entities；UDM entity determines the 2nd AMF entity that UE uses the second access technology to register according to access style, if the 2nd AMF entity exists, then UDM entity calls the second service of UDM entity, the 2nd AMF entity is notified to update the subscription data of the UE saved, the subscription data of the UE includes the information of SMF entity and the DNN that the PDU session of the SMF entity management uses, wherein, the information of SMF entity includes mark and/or the address of SMF entity.
By the embodiment of the present application, UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
5th aspect, provides a kind of UE, the UE have the function of the above-mentioned first aspect of realization and its optionally realize in UE behavior.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.Pass through the embodiment of the present application, UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so that AMF entity is when determining that the switching between access technology is supported in PDU session, according to the registration scenarios of UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, indicate information of the SMF entity to UDM registers entities DNN and SMF entity, wherein the information of SMF entity includes mark and/or the address of SMF entity.SMF entity is not in all cases, just to UDM entity more new information, alternatively, not all situation all updates DNN, saves signal resource when SMF entity is updated to UDM entity as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.
6th aspect, provides a kind of AMF entity, the AMF entity have the function of the above-mentioned second aspect of realization and its optionally realize in AMF entity behavior.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.Implemented by the application Example, when AMF entity receives its switching between requesting the PDU session established to support access technology of the instruction of UE transmission, registration scenarios of the AMF entity further according to UE, it is determined whether need to update DNN to UDM entity.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated by AMF.SMF entity is not in all cases, just to UDM entity more new information as a result, alternatively, not all situation all updates DNN when SMF entity is updated to UDM, UE is also not in all cases, and the NAS message of transmission all carries the first parameter, saves signal resource.
7th aspect, provides a kind of SMF entity, the SMF entity have the function of the above-mentioned third aspect of realization and its optionally realize in SMF entity behavior.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.By the embodiment of the present application, SMF just can send DNN to UDM entity after receiving corresponding instruction, save signal resource.
Eighth aspect provides a kind of UDM entity, the UDM entity have the function of realizing the above-mentioned third aspect and its optionally realize in UDM entity behavior.The function can also execute corresponding software realization by hardware realization by hardware.The hardware or software include one or more modules corresponding with above-mentioned function.By the embodiment of the present application, UDM entity can be determined according to access style, when UE by different access technologies in different AMF registers entities, UDM entity can be to the subscription data of the update of the AMF entity in addition to current AMF entity UE.
9th aspect, provide a kind of computer readable storage medium, it is stored with computer program on the computer readable storage medium, which realizes above-mentioned first aspect, second aspect when being executed by processor, method described in either side or various aspects in the third aspect and fourth aspect.
Tenth aspect, provides a kind of computer program product comprising instruction, when described instruction is run on computers, so that computer executes above-mentioned first aspect, second aspect, method described in either side or various aspects in the third aspect and fourth aspect.
Pass through the embodiment of the present application, UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so as to when AMF entity determine PDU session support access technology between switching when, according to the registration scenarios of UE, it determines the need for UDM entity more new information, alternatively, when SMF entity is updated to UDM entity, it is determined whether need to update DNN.Alternatively, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, information of the SMF entity to UDM registers entities DNN and SMF entity is indicated.SMF entity is not in all cases, just to UDM entity more new information, alternatively, not all situation all updates DNN, saves signal resource when SMF entity is updated to UDM entity as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.SMF just can send DNN to UDM entity after receiving corresponding instruction, save signal resource.UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
Detailed description of the invention
Fig. 1 is a kind of 5G schematic diagram of a communication network structure provided by the embodiments of the present application；
Fig. 2 is another kind 5G schematic diagram of a communication network structure provided by the embodiments of the present application；
Fig. 3 is a kind of session establishing method Signalling exchange schematic diagram provided by the embodiments of the present application；
Fig. 4 is another session establishing method Signalling exchange schematic diagram provided by the embodiments of the present application；
Fig. 5 is a kind of Signalling exchange example of session establishing method provided by the embodiments of the present application；
Fig. 6 is the Signalling exchange example of another session establishing method provided by the embodiments of the present application；
Fig. 7 is a kind of structural schematic diagram of UE provided by the embodiments of the present application；
Fig. 8 is a kind of AMF entity structure schematic diagram provided by the embodiments of the present application；
Fig. 9 is a kind of SMF entity structure schematic diagram provided by the embodiments of the present application；
Figure 10 is a kind of UDM entity structure schematic diagram provided by the embodiments of the present application；
Figure 11 is the structural schematic diagram of another kind UE provided by the embodiments of the present application；
Figure 12 is another kind AMF entity structure schematic diagram provided by the embodiments of the present application；
Figure 13 is another kind SMF entity structure schematic diagram provided by the embodiments of the present application；
Figure 14 is another kind UDM entity structure schematic diagram provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, the embodiment of the present application is described.
The embodiment of the present application provides a kind of method and apparatus of session establishment, is applied to 5G communication network.
In the embodiment of the present application, user equipment is referred to as terminal (terminal), it can be directed to user and the equipment of voice and/or data connectivity is provided, there is the handheld device of wireless connecting function or be connected to other processing equipments of radio modem.Wireless terminal can be communicated through RAN with one or more core nets, wireless terminal can be mobile terminal, such as mobile phone (or be " honeycomb " phone) and the computer with mobile terminal device, such as, can be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.Such as, personal communication service (personal communication service, PCS) phone, wireless phone, Session initiation Protocol (session initiated protocol, SIP) phone, wireless local loop (wireless local loop, WLL it) stands, the equipment such as personal digital assistant (personal digital assistant, PDA).Wireless terminal is referred to as system, subscriber unit (subscriber unit), subscriber station (subscriber station), movement station (mobile station), mobile station (mobile), distant station (remote station), access point (access point), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment), in the embodiment of the present application It does not limit.Divided according to type of service, the present embodiments relate to UE, can be the terminal device, such as mobile phone, multimedia equipment etc. for above having high requirements to rate and mobility, be also possible to the terminal of Internet of Things, can also be the terminal of car networking.
One network slice, which is realized, is sliced example (network slice instance, NSI) into network deployment for a network.Multiple network slice examples may be implemented out in one network slice.
Fig. 1 is a kind of 5G schematic diagram of a communication network structure provided by the embodiments of the present application.Fig. 2 is another kind 5G schematic diagram of a communication network structure provided by the embodiments of the present application.
Referring to figs. 1 and 2 in the embodiment of the present application, AMF entity, SMF entity, UDM entity and user plane functions (user plane function, UPF) entity can be one or more servers in the core net of 5G communication network.UE can be communicated by 3GPP access technology or non-3 GPP access technology with the core net of 5G communication network.Such as, UE can access the core net of 5G communication network by evolved base station (Evolved Node B, eNB) or by Radio Access Network (Radio Access Network, RAN), UE can also pass through Wireless Fidelity (Wireless-Fidelity Wi-Fi) technology and the core net of non-3 gpp interworking function (non-3GPP inter-working function, N3IWF) entity access 5G communication network are communicated.Wherein, pass through universal terrestrial wireless access (the evolved-universal terrestrial radio access of evolution, E-UTRA) technology is accessed by eNB, or pass through new wireless technology (New Radio, NR it) accessed by RAN, it is believed that is accessed by 3GPP access technology；It may be considered by Wi-Fi technology access and accessed by non-3 GPP access technology.
The function of the modules in 5G communication network is simply introduced below.
AMF entity has the function of the mobile management of UE, registration management, connection management, Lawful Interception, supports SM information, access authentication and insertion authority between transmission UE and SMF entity etc..
SMF entity has the function of session management, roaming etc..Wherein, conversation management functional, for example, session establishment, modification and release, including the tunnel maintenance of UPF and access net (access network, AN) node (node).Roaming function may include that accounting data collection, support and external (external) data network (data network, DN) carry out the signalling for authenticating/authorizing.
UPF entity has the function of data packet by with Lawful Interception etc..
UDM entity has the processing of certification certificate, user's identifying processing, access mandate, registration and mobile management, the functions such as subscription management and short message managing.
N3IWF entity has the signaling of relay uplink and downlink between UE and AMF entity, relays the user plane data packet of uplink and downlink between UE and UPF entity, and supports the functions such as AMF selection.
Wherein, UE is connect with RAN by Uu interface；Signaling and data between RAN equipment and AMF entity pass through N2 interface；Signaling and data between AMF entity and SMF entity are transmitted by N11 interface；Signaling and data between SMF entity and UPF entity are transmitted by N4.It should be noted that for details, reference can be made to 3GPP standards for the definition of Uu interface, N2 interface, N3 interface, N11 interface and N4 interface.
As shown in Figure 1, when UE is registered in 5G network, it may be possible to by 3GPP access technology and non-3 GPP access technology in same AMF registers entities.
As shown in Fig. 2, when UE is registered in 5G network, it is also possible to by 3GPP access technology and non-3 GPP access technology in different AMF registers entities.Wherein, Fig. 2 shows being that 3GPP access technology and N3GPP access technology are registered in different public land mobile networks (Public Land Mobile Network, PLMN) respectively, then the SMF entity in embodiment is the SMF entity of HPLMN.
It certainly, can also be only by 3GPP access technology or non-3 GPP access technology in AMF registers entities when UE is registered in 5G network.
Wherein, 3GPP access technology and non-3 GPP access technology are passed through in same AMF registers entities for UE, the PDU session of UE needs to be switched to another access technology from an access technology.
In order to guarantee business continuance, when PDU session is switched to another access technology, IP address used in the PDU session needs to guarantee constant.In order to reach this purpose, when UE initiates the switching of PDU session to AMF entity, AMF entity needs the SMF entity used before selecting the PDU session.Because SMF physically preserves the IP address of the PDU session, selecting identical SMF entity then can guarantee that the IP address of the PDU session is constant.
For example, AMF entity can save session id and SMF ID and/or the corresponding relationship of address when UE establishes PDU session on 3GPP, SMF entity can save the corresponding relationship of session id and IP address.When UE initiates PDU session switching, i.e. PDU session rebuilding in non-3 gpp, UE carries identical session id.Because AMF entity is identical, Then AMF entity can find identical SMF according to the session id and SMF ID and/or the corresponding relationship of address being saved.SMF is after receiving the request of PDU session establishment, according to the corresponding relationship of the session id and IP address that keep inside SMF, uses identical IP address to UE.
Again for example, when UE registers different AMF by two kinds of access technologies, because different by the AMF entity that 3GPP access technology is registered with N3GPP technology, when carrying out PDU session switching, the address SMF ID/ for including in the UE subscription data that AMF entity is notified by UDM, selects identical SMF.
With reference to the accompanying drawing, to UE only by a kind of access technology register or UE is registered by a variety of access technologies but the AMF entity of registration it is different when, UE carries out PDU session establishment (reconstruction) method and is described further.
Fig. 3 is a kind of session establishing method Signalling exchange schematic diagram provided by the embodiments of the present application.As shown in figure 3, this method specifically comprises the following steps:
S310, UE send first message to the first AMF entity.Wherein, which includes the first information, which includes the information that PDU session is established in request, and the information which establishes PDU session includes the first parameter.First message can be NAS message, and the information that PDU session is established in request is used to establish PDU session to SMF entity requests, which is used to indicate the switching between PDU session support different access technologies.
UE can determine whether PDU session supports the switching between access technology according at least one in user equipment strategy or business.
For example, will receive the user equipment strategy (UE policy) that network issues, for example, user equipment routing strategy (UE routing selection policy, URSP) when UE success is registered in 5G network.UE should be transmitted according to the data that URSP determines that application program uploads in the PDU session for the condition that meets.It is transmitted on it if the PDU session for having had the condition of satisfaction, if it has not, then UE initiates PDU session establishment.
UE can be according to it in the first AMF registers entities, and the first AMF entity is sent to the corresponding parameter of access style (access type, AT) in the URSP rule of UE and determines whether PDU session supports the switching between access technology.As an example, URSP rule may refer to shown in table 1.
Table 1
Wherein, screening washer: the information that can be compared with data flow is flowed, and determines whether the rule is suitable for this data flow.It may include the application program identification and other information of its applicable data flow.It is referred to as " matching stream (matching traffic) " with the data flow that the flow filter of URSP rule matches, this is URSP rule " matching stream ".
Direct to shunt: if instruction matching stream is prohibited, preferred or permission (allows but not preferential) the non-3gpp except PDU session to access.It is also possible to show a specific non-3 gpp access type (such as WLAN, ssid-x), and in the type, matching stream is forbidden, preferred or permission.
Slice information: this includes S-NSSAI needed for matching stream.If matching stream can support these S-NSSAI by a PDU session, it may further include multiple S-NSSAI.It associates for that will match stream with one or more S-NSSAI.When S-NSSAI is unavailable, UE also selects to substitute S-NSSAI used at present for matching stream using this information.
Continuity type: this includes SSC mode needed for matching stream.If match stream can by a PDU session come Any one SSC mode is supported, then it may can include also multiple SSC modes with priority.It is for getting up matched flow and one or more SSC pattern association.
DNNs: this includes DNN needed for matching stream.Can be by PDU Session Hand-off into these DNN if matching stream, it may also include the DNN of multiple priority.It associates for that will match stream with one or more DNN.
Access style: if UE needs to establish a PDU session for matching stream, show the access style (3GPP or non-3 gpp) that establish PDU session.It, which is also possible to instruction, should attempt the priority access list of PDU session setting.Wherein, the corresponding parameter of access style directly indicates 3GPP access and N3GPP access, then it is assumed that supports the switching between different access technologies, alternatively, URSP rule does not limit access style, such as, there is no this parameter of access style in URSP rule, is the switching between supporting different access technologies with regard to default.
It can determine that " DummyApp " corresponding PDU session only allows to be established by 3GPP access technology according to the information provided in table 1, namely the switching between access technology is not supported in " DummyApp " corresponding PDU session, and the switching between access technology is then supported in " APP1 " and " APP2 " corresponding PDU session.
Each URSP rule should include stream screening washer and one or more other assemblies, these components specify how matched routings stream.
UE sends first message to the first AMF entity to indicate whether UE initiation PDU session establishment and the PDU session support the switching between access technology, wherein, when first message carries the first parameter, i.e. it is believed that the switching between access technology is supported in the PDU session, when first message does not carry the first parameter, then it is assumed that the switching between access technology is not supported in the PDU session；Alternatively, when the first parameter value is 1, i.e., it is believed that the switching between access technology is supported in the PDU session, when the first parameter value is 0, then it is assumed that the switching between access technology is not supported in the PDU session；Vice versa.
Such as, first message can be NAS message, the NAS message includes session id, DNN and the first information, the first information can be " N1SM information ", the N1SM information includes the information (PDU Session Establishment Request) of PDU session establishment request, the information of PDU session establishment request includes the first parameter, first parameter can be switching instruction (Handover Indication), switching instruction is used to indicate the switching between PDU session support access technology, such as, switching instruction is used to indicate the switching between PDU session support 3GPP access technology and non-3 GPP access technology.
S320, the first AMF entity determine the second parameter, which is used to indicate UE and is registered in AMF by a kind of access technology.
If UE is only registered by a kind of access technology on AMF entity (the first AMF entity), UE may be registered on other AMF entities (the 2nd AMF entity) by other access technologies.So the first AMF entity is after the first message for receiving UE transmission, it is thus necessary to determine that whether UE is only registered by a kind of access technology in the first AMF.If UE is only registered by a kind of access technology in the first AMF, the first AMF determines the second parameter.It is registered if UE also passes through other access technologies in the first AMF, is not then needed to determine the second parameter, for example, UE is registered on same AMF by 3GPP access technology and non-3 GPP access technology.
Such as, first AMF entity is after the first message for receiving UE transmission, determine that UE is physically only registered by 3GPP access technology or non-3 GPP access technology in the first AMF, then the first AMF entity determines the second parameter, which is that single AMF entity indicates (Single AMF Indication).
S330, the first AMF entity send the request for calling the first service of the SMF entity to SMF entity, and the request of the first service for calling the SMF entity includes the first information and the second parameter.Wherein, which establishes PDU session for requesting.
First AMF entity needs to select SMF, saves session id and SMF ID and/or the corresponding relationship of address after the first message for receiving UE transmission.
When UE initiates PDU session establishment, the corresponding SMF entity of PDU session needs to UDM entity register mark and/or the address for DNN the and SMF entity that the PDU session uses.Since the session id of the PDU session corresponding DNN and SMF can change or not change, when SMF entity is in UDM registers entities, can only more new change content.
For example, when the PDU session of UE is switched to another access technology from an access technology, DNN and SMF used in UE is constant for UE by 3GPP access technology and non-3 GPP access technology in same AMF registers entities.And for UE by 3GPP access technology and non-3 GPP access technology in different AMF registers entities, AMF entity changes.
The case where different AMF entities are registered in by different access technologies for UE, UDM also needs for the relevant information after PDU session establishment to be sent to another AMF entity, for example, SMF ID after PDU session establishment and/or one or more in address or DNN etc..
First AMF entity can determine that the access technology registration scenarios of UE on it notify to give SMF entity.Wherein, the first AMF entity can reinform SMF entity only when UE is registered on it by a kind of access technology, that is, to SMF entity send the second parameter,
For example, the first AMF entity sends N11 message to SMF entity, which includes session id, DNN, the first information and the second parameter when the first AMF determines that UE is only registered by a kind of access technology on it.
S340, SMF entity send the request for calling the first service of UDM entity to UDM entity.
The request of the first service of calling UDM entity includes the information for the DNN and SMF entity that the PDU session uses, the request of the first service of calling UDM entity can also include access style, and the corresponding UE of PDU session which is used to indicate SMF entity management passes through the first access technology in the first AMF registers entities.The request of the first service of calling UDM entity can be used for requesting to register the information of the corresponding DNN and SMF entity of the PDU session, wherein the information of SMF entity includes mark and/or the address of SMF entity.
SMF entity is after receiving the first AMF entity and sending the request for calling the first service of SMF entity, IP address can be distributed for the corresponding PDU session of request of the first service of calling SMF entity, and save the corresponding relationship of session id He the IP address, so that UE is communicated using the IP address and user plane functions (User Plane Function, UPF) entity and data network.
SMF entity also needs to be registered to UDM entity, registers the information for the DNN and SMF entity that the PDU session of the UE uses, wherein the information of SMF entity includes mark and/or the address of SMF entity, and the mark of SMF entity can be SMF ID.
Wherein, if calling in the request of the first service of SMF entity does not include the first information and the second parameter, then SMF entity can consider the corresponding UE of the PDU session not in other AMF registers entities, then SMF entity can not be to UDM registers entities, or, in registration, the request of the service of the calling UDM entity sent to UDM can not include DNN.
If calling includes the first information and the second parameter in the request of the first service of UDM entity, SMF entity is believed that UE may have registered other AMF entities.The request for the calling UDM entity that then SMF entity is sent to UDM may include DNN.S350, UDM entity determines the 2nd AMF entity that UE uses the second access technology to register according to access style, if the 2nd AMF entity exists, then UDM entity calls the second service of UDM entity, the 2nd AMF entity is notified to update the subscription data of the UE saved, the subscription data of the UE includes the information and SMF entity of SMF entity The DNN that the PDU session of management uses.
Wherein, if not including the information such as DNN or access style in the request of the first service of calling UDM entity, UDM entity updates the context for the corresponding UE that UDM is saved according to the request for the first service for calling UDM entity.
If calling includes the information such as DNN or access style in the request of the first service of UDM entity, UDM entity updates the context for the corresponding UE that UDM is saved according to the request for the first service for calling UDM entity.And the 2nd AMF entity that UE uses the second access technology to register is determined whether there is according to access style, if the 2nd AMF entity exists, then UDM entity calls the second service of UDM entity, the 2nd AMF entity is notified to update the subscription data for the UE that the 2nd AMF entity saves, the subscription data of the UE includes the information of SMF entity and the DNN that the PDU session of SMF entity management uses.
The response of the first service for the calling SMF entity that S360, SMF entity are sent to AMF entity, the response of the first service of the calling SMF entity includes second information, which includes PDU session establishment received message.For example, second information can be N1SM information.
S370, AMF entity send second message to UE, which includes the second information.
It should be noted that the SMF entity in embodiment is the SMF entity of HPLMN if 3GPP access technology and N3GPP access technology are registered in different PLMN respectively.
Pass through the embodiment of the present application, UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so that AMF entity is when determining that the switching between access technology is supported in PDU session, according to the registration scenarios of UE, it determines the need for updating to UDM entity, alternatively, when updating, if need to update DNN.SMF entity is not in all cases, just to UDM entity more new information, alternatively, not all situation all updates DNN when updating, to save signal resource as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.SMF can just update after receiving corresponding instruction to UDM entity, alternatively, when updating, just sending DNN after receiving corresponding instruction to UDM, saving signal resource.UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
Fig. 4 is another session establishing method Signalling exchange schematic diagram provided by the embodiments of the present application.As shown in figure 3, this method specifically comprises the following steps:
S410, UE send first message to the first AMF entity.Wherein, which includes the first information, which includes the information that PDU session is established in request, and the information which establishes PDU session includes the first parameter.First message can be NAS message, the information that PDU session is established in request is used to establish PDU session to SMF entity requests, which is used to indicate mark and/or the address of the data network title DNN that conversation management functional SMF entity is used to PDU session described in user data management UDM registers entities and the SMF entity.
UE can determine whether PDU session supports the switching between access technology according at least one in user equipment strategy or business.For details, reference can be made to the associated descriptions in embodiment as shown in connection with fig. 3, and details are not described herein again.
UE is after determining that the switching between access technology is supported in PDU session, it is also necessary to determine it the first AMF registers entities the case where.
When UE determine its by a kind of access technology in the first AMF registers entities, alternatively, register and register by a variety of access technologies AMF entity difference when, then to the first AMF entity send carry the first parameter first message.Wherein, the unique interim UE in the whole world that UE can hold according to it identifies (Global User Temporary ID, GUTI) quantity to determine the quantity of the AMF entity of its registration.General UE one AMF entity of every registration, the AMF entity can distribute a GUTI for the UE.When UE holds a GUTI and only by a kind of access technology in the first AMF registers entities, UE determines it by a kind of access technology in the first AMF registers entities, alternatively, UE determines it by a kind of access technology in the first AMF registers entities when UE holds multiple GUTI.Such as, first message can be NAS message, the NAS message includes session id, DNN and the first information, the first information can be " N1SM information ", the N1SM information includes the information (PDU Session Establishment Request) of PDU session establishment request, the information of PDU session establishment request includes the first parameter, first parameter can be switching instruction (Handover Indication), switching instruction is used to indicate data network title DNN and the SMF entity that SMF entity is used to PDU session described in user data management UDM registers entities, wherein, the information of SMF entity includes mark and/or the address of SMF entity.
S420, the first AMF entity send the request for calling the first service of the SMF entity to SMF entity, and the request of the first service for calling the SMF entity includes the first information.Wherein, which establishes PDU session for requesting.
AMF entity needs to select SMF, saves session id and SMF ID and/or the corresponding relationship of address after the first message for receiving UE transmission.
When UE initiates PDU session establishment, the corresponding SMF entity of PDU session needs to UDM entity register the information of data network title (data network name, DNN) and SMF entity that the PDU session uses.
For example, the first AMF entity sends the request for calling the first service of the SMF entity to SMF entity, the request of the first service of the calling SMF entity includes session id, DNN and the first information.
S430, SMF entity sends the request for calling the first service of UDM entity to UDM entity, the request of the first service of calling UDM entity includes the information for the DNN and SMF entity that the PDU session uses, the request of the first service of calling UDM entity can also include access style, and the corresponding UE of PDU session which is used to indicate SMF entity management passes through the first access technology in the first AMF registers entities.The request of the first service of calling UDM entity can be used for requesting to register the information of the corresponding DNN and SMF entity of the PDU session.
SMF entity is after receiving the first AMF entity and sending the request for calling the first service of SMF entity, IP address can be distributed for the corresponding PDU session of request of the first service of calling SMF entity, and the corresponding relationship of session id He the IP address is saved, so that UE is communicated using the IP address with UPF entity and data network.
SMF entity also needs to be registered to UDM entity, registers the information for the DNN and SMF entity that the PDU session of the UE uses.
Wherein, if calling in the request of the first service of SMF entity does not include the first information, then SMF entity can consider the corresponding terminal of PDU session not in other AMF registers entities, then SMF entity can not be to UDM registers entities, or, in registration, the request of the calling UDM entity sent to UDM can not include DNN.
If calling includes the first information in the request of the first service of SMF entity, SMF entity is believed that UE may have registered other AMF entities.The request for the calling UDM entity that then SMF entity is sent to UDM may include DNN.It can also include the corresponding access style of PDU session.S440, UDM entity determines the 2nd AMF entity that UE uses the second access technology to register according to access style, if the 2nd AMF entity exists, UDM entity calls the second service of UDM entity, the 2nd AMF entity is notified to update the subscription data for the UE that AMF entity saves, the UE Subscription data include the information of SMF entity and the DNN that the PDU session of SMF entity management uses.
Step S440 can be found in the description of step S350 in aforementioned embodiment as shown in connection with fig. 3, and details are not described herein again.
The response of the first service for the calling SMF entity that S450, SMF entity are sent to AMF entity, the response of the first service of the calling SMF entity includes second information, which includes PDU session establishment received message.For example, second information can be N1SM information.
S460, AMF entity send second message to UE, which includes the second information.
It should be noted that the SMF entity in embodiment is the SMF entity of HPLMN if 3GPP access technology and N3GPP access technology are registered in different PLMN respectively.
By the embodiment of the present application, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, indicate information of the SMF entity to UDM registers entities DNN and SMF entity.SMF entity is not in all cases, just to UDM entity more new information or not all situation, all to carry DNN when SMF entity is updated to UDM entity, save signal resource as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.SMF just can send information to UDM entity after receiving corresponding instruction, alternatively, just updating DNN when SMF entity is updated to UDM entity after receiving corresponding instruction, saving signal resource.UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
Fig. 5 is a kind of Signalling exchange example of session establishing method provided by the embodiments of the present application.As shown in figure 5, this method specifically comprises the following steps:
S501, UE determine the first parameter, for example, switching instruction (Handover Indication).Wherein, UE can be according to URSP rule and the whether identical judgement of access technology registration AMF entity.If the corresponding parameter instruction of access style in URSP rule, two kinds of access technologies are ok, and following two condition meets first, UE is only registered by a kind of access technology, or, UE passes through two kinds of access technology registrations, and there are two different AMF entities (there are two Global User Temporary ID, GUTI).So, when UE judges SMF entity in UDM registers entities, SMF entity needs to update the information and DNN of SMF, it is determined that the first parameter.
S502, UE send NAS message to AMF entity, wherein including session id, DNN and N1SM information.It include the information (PDU Session Establishment Request) that PDU session is established in request in the N1SM information, it includes the first parameter in the information of PDU session that the request, which is established, first parameter is used to indicate SMF entity in UDM registers entities, mark and/or the address of the data network title DNN and the SMF entity that use to PDU session described in user data management UDM registers entities.The NAS message, which may be embodied in, is first sent to RAN entity in RRC information, be sent to AMF entity by RAN entity, RAN can carry access style (access type) when forwarding simultaneously.
S503, AMF entity selection SMF entity save session id and SMF ID and/or the corresponding relationship of address.
S504, AMF entity sends the request for calling the first service of SMF entity to SMF entity, it include the N1SM information received from UE in the request of the first service of calling SMF entity, wherein can also include session id, DNN, access style in the request of the first service of calling SMF entity.
S505, SMF entity obtain UE subscription data to UDM entity, wherein UE subscription data includes DNN, also It may include the information of SMF.
S506, SMF entity select UPF entity according to DNN etc., distribute IP address for the PUD session, save the corresponding relationship of session id and IP address, distribute tunnel ID and address for UPF, are sent to UPF, establish PDU session with UPF.
S507, SMF entity sends the response for calling the request of first service of SMF entity to AMF entity, the response of the request of the first service of calling SMF entity may include SM response, wherein comprising tunnel ID and address that SMF entity is the distribution of UPF entity and the information (PDU session Est.Accept) that PDU session establishment receives.
SM response is placed in PDU session request by S508, AMF entity, and is sent to RAN entity, and RAN entity obtains the tunnel ID and address that SMF entity is the distribution of UPF entity, and RAN entity sends upstream data to UPF entity according to the ID and address.
The information that PDU session establishment receives is sent to UE by S509, RAN entity, and establishes the radio bearer of the PDU session.
S510, RAN entity send the response of PDU session request to AMF entity, wherein tunnel ID and address comprising RAN and entity distribution.
S511, AMF entity sends the request for calling SMF entity second service to SMF entity, the request of the second service of calling SMF entity includes N2 information, SM request (SM Request with N2Info) is carried in the N2 information, wherein, SM request includes tunnel ID and the address for receiving the RAN distribution that RAN entity is sent.
S512, SMF entity carry out PDU session modification to UPF entity, and UPF entity is informed in the tunnel ID that RAN entity is distributed and address, and the tunnel ID and address that UPF entity is distributed according to RAN entity send downlink data.
S513, SMF entity reply the response for calling the request of second service of SMF entity to AMF entity.
S514, SMF entity determine that the information of the corresponding SMF entity of DNN of the PDU session in UDM entity is oneself.
Wherein it is possible to determine that the information of the corresponding SMF entity of DNN of PDU session in UDM is not oneself according to the UE signing information obtained in S505.
For example, whether being oneself in the request for calling SMF first service according to the information of the corresponding SMF entity of DNN identical in the determining UE signing information obtained in S505 of the DNN for including.
If it is, SMF entity can not to UDM registers entities, or, the first service for calling UDM entity, only updates the information of the corresponding SMF entity of the DNN, without updating DNN to UDM entity, wherein, the request of the first service of UDM entity is called to include the information of SMF entity.
S515, if the information of the corresponding SMF entity of DNN is not the information of oneself in UE signing information, SMF entity calls the first service of UDM entity, to be registered as the SMF (Register UE Serving SMF) of UE service in UDM entity.Wherein, the content for needing to register includes DNN, SMF information and access style.
S516, UDM entity determines the access technology that the PDU session uses according to access style, if UDM physically preserves the corresponding relationship of the information of another access technology and AMF entity in the context of the UE, and the information of the AMF entity of access style that the information of the AMF entity in the corresponding relationship is registered with current UE is different, then the corresponding AMF entity of the information of AMF entity of the UDM into the corresponding relationship updates the information of SMF entity, DNN.
Wherein, the information of SMF entity may include SMF ID and/or address；The information of AMF entity may include AMF ID and/or address.
If 3GPP and N3GPP are registered in different PLMN respectively, the SMF in embodiment is the SMF of HPLMN.
Pass through the embodiment of the present application, UE can indicate whether the PDU session that its request is established supports the switching between access technology to AMF entity, so that AMF entity is when determining that the switching between access technology is supported in PDU session, according to the registration scenarios of UE, it determines the need for updating to UDM entity, alternatively, when SMF entity is updated to UDM entity, it is determined whether need to update DNN.SMF entity is not in all cases, all to save signal resource to UDM entity more new information alternatively, SMF entity is not in all cases, all to update DNN to UDM entity as a result,.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, the signing information of UE is updated to other AMF entities, and signal resource is saved with this.SMF entity can just update after receiving corresponding instruction to UDM entity, alternatively, when SMF entity is updated to UDM entity, just sending DNN after receiving corresponding instruction to UDM, saving signal resource.UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
Fig. 6 is, for the Signalling exchange example of another session establishing method provided by the embodiments of the present application.As shown in fig. 6, this method specifically comprises the following steps:
S601, UE determine the first parameter, for example, switching instruction (Handover Indication).Wherein, UE judges according to URSP rule.If the corresponding parameter instruction of access style in URSP rule, two kinds of access technologies of the PDU session are ok, need to send the first parameter to AMF then UE is determined.
S602, UE send NAS message to AMF entity, wherein including session id, DNN and N1SM information.It include the information (PDU Session Establishment Request) that PDU session is established in request in the N1SM information, it includes the first parameter in the information of PDU session which, which establishes, which supports the switching between access technology for UE.The NAS message, which may be embodied in, is first sent to RAN entity in RRC information, be sent to AMF entity by RAN entity, RAN can carry access style (access type) when forwarding simultaneously.
S603, AMF entity selection SMF entity save session id and SMF ID and/or the corresponding relationship of address.
If AMF entity judges that UE is registered by a kind of access technology, AMF entity, which determines, to be needed to send the second parameter to SMF.
S604, AMF entity sends the request for calling the first service of SMF entity to SMF entity, the request of the first service of calling SMF entity includes the N1SM information received from UE, it wherein, can also include session id, DNN, access style and the second parameter in the request of the first service of calling SMF entity.
S605, SMF entity obtain UE subscription data to UDM entity, wherein UE subscription data includes DNN, can also include SMF ID and/or address.
S606, SMF entity select UPF entity according to DNN etc., distribute IP address for the PUD session, save the corresponding relationship of session id and IP address, distribute tunnel ID and address for UPF, are sent to UPF, establish PDU session with UPF.
S607, SMF entity sends the response for calling the request of first service of SMF entity to AMF entity, the response of the request of the first service of calling SMF entity may include SM response, wherein comprising tunnel ID and address that SMF entity is the distribution of UPF entity and the information (PDU session Est.Accept) that PDU session establishment receives.
SM response is placed in PDU session request by S608, AMF entity, and is sent to RAN entity, and RAN entity obtains the tunnel ID and address that SMF entity is the distribution of UPF entity, and RAN entity is real to UPF according to the ID and address Body sends upstream data.
The information that PDU session establishment receives is sent to UE by S609, RAN entity, and establishes the radio bearer of the PDU session.
S610, RAN entity send the response of PDU session request to AMF entity, wherein tunnel ID and address comprising RAN and entity distribution.
S611, AMF entity sends the request for calling the second service of SMF entity to SMF entity, the request of the second service of calling SMF entity includes N2 information, SM request (SM Request with N2Info) is carried in the N2 information, wherein, SM request includes tunnel ID and the address for receiving the RAN distribution that RAN entity is sent.
S612, SMF entity carry out PDU session modification to UPF entity, and UPF entity is informed in the tunnel ID that RAN entity is distributed and address, and the tunnel ID and address that UPF entity is distributed according to RAN entity send downlink data.
S613, SMF entity reply the response for calling the request of second service of SMF entity to AMF entity.
S614, SMF entity determine that the information of the corresponding SMF entity of DNN of the PDU session in UDM entity is oneself after receiving the first parameter and the second parameter.
Wherein it is possible to determine that the information of the corresponding SMF entity of DNN of PDU session in UDM is not oneself according to the UE signing information obtained in S505.
For example, determining whether the information of the corresponding SMF entity of identical DNN in UE signing information is oneself according to the DNN for including in the request for calling SMF first service.
If SMF entity receives the first parameter and the second parameter, and the DNN for including in the request of SMF first service is called to determine that the information of the corresponding SMF entity of identical DNN in the UE signing information that obtains in S505 is oneself, then SMF entity can not be to UDM registers entities, or, the first service for calling UDM entity, only updates the information of the corresponding SMF entity of the DNN, without updating DNN to UDM entity, wherein, the request of the first service of UDM entity is called to include the information of SMF entity.
S615, if the information of the corresponding SMF entity of DNN is not the information of oneself in UE signing information, SMF entity calls the second service of UDM entity, to be registered as the SMF (Register UE Serving SMF) of UE service in UDM entity.Wherein, the content for needing to register includes DNN, SMF information and access style.
S616, UDM entity determines the access technology that the PDU session uses according to access style, if UDM physically preserves the corresponding relationship of the information of another access technology and AMF entity in the context of the UE, and the information of the AMF entity of access style that the information of the AMF entity in the corresponding relationship is registered with current UE is different, then the corresponding AMF of the information of AMF entity of the UDM into the corresponding relationship updates the information of SMF entity, DNN.
Wherein, the information of SMF entity may include SMF ID and/or address；The information of AMF entity may include AMF ID and/or address.
If 3GPP and N3GPP are registered in different PLMN respectively, the SMF in embodiment is the SMF of HPLMN.
By the embodiment of the present application, UE can directly determine whether PDU session supports the switching between access technology and the registration scenarios of UE, when the two all meets condition, indicate information of the SMF entity to UDM registers entities DNN and SMF entity.SMF entity is not in all cases, just to update to UDM entity as a result, alternatively, when SMF entity is updated to UDM entity, SMF entity just sends DNN to UDM, saves signal resource after receiving corresponding instruction.In addition, SMF entity can also be according to the instruction of the first parameter of UE, judge whether UDM entity needs to update the signing information of UE to other AMF entities, the information sent so as to UDM entity combination SMF entity, when determining other AMF entities registered there are UE by other access technologies, update UE's to other AMF entities Signing information saves signal resource with this.SMF can just update after receiving corresponding instruction to UDM entity, alternatively, when SMF entity is updated to UDM entity, SMF entity just sends DNN to UDM, saves signal resource after receiving corresponding instruction.UDM entity can be determined according to access style UE by different access technologies in different AMF registers entities, UDM entity can to the AMF entity in addition to current AMF entity update UE subscription data.
Fig. 7 is a kind of structural schematic diagram of UE provided by the embodiments of the present application.As shown in fig. 7, the UE may include:
Transmission unit 701, for sending first message to AMF entity, first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter is used to indicate the switching between PDU session support different access technologies, or indicates the information for the DNN and SMF entity that conversation management functional SMF entity is used to UDM registers entities PDU session；
Receiving unit 702, for receiving the second message of AMF entity transmission, second message includes the second information, and the second information includes the information that PDU session establishment receives.
Optionally, UE further include:
Determination unit 703, for determining the first parameter according at least one in user equipment strategy or business.
Optionally it is determined that unit 703 is also used to, when the access style in the user equipment strategy indicates a variety of access technologies or the user equipment strategy does not include the access style, first parameter is determined.
Optionally, transmission unit 701 is also used to, when UE is registered by a kind of access technology, alternatively, UE register and register by a variety of access technologies AMF entity difference when, to AMF entity send first message, first message includes the first information, the first information includes the information that PDU session is established in request, and the information that PDU session is established in request includes the first parameter, and the first parameter is used to indicate the information for the DNN and SMF entity that SMF entity is used to UDM registers entities PDU session.
The UE can be used as the UE of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus the network equipment can according to UE provide information determine PDU session between the support situation switched different access technologies, even UE is the case where network side is registered, it determines the need for updating to UDM entity, or, when SMF entity is updated to UDM entity, SMF entity determines the need for updating DNN to UDM entity.SMF entity is not in all cases, just to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Fig. 8 is a kind of AMF entity structure schematic diagram provided by the embodiments of the present application.As shown in figure 8, the AMF entity may include:
Receiving unit 801, for receiving the first message of user equipment (UE) transmission, first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter is used to indicate the switching between PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and SMF that the PDU session of UDM registers entities uses to uniform data；
Transmission unit 802, for sending the request for calling the first service of SMF entity to SMF entity, calling the request of the first service of SMF entity includes the first information；
Receiving unit 801 is also used to, and receives the response of the first service for the calling SMF entity that SMF entity is sent, and calling the response of the first service of SMF entity includes the second information, and the second information includes the information that PDU session establishment receives；
Transmission unit 802 is also used to, and sends the 4th message to UE, the 4th message includes the second information.
Optionally, the AMF entity further include:
Determination unit 803, for determining that the second parameter, the second parameter are used to indicate UE and are registered in AMF by a kind of access technology；
Transmission unit 802 is also used to, and the request for calling the first service of SMF entity is sent to SMF entity, and calling the request of the first service of SMF entity includes the first information and the second parameter.
The AMF entity can be used as the AMF entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus SMF entity can according to UE and AMF entity provide information determine PDU session between the support situation switched different access technologies, even UE is the case where network side is registered, it determines the need for updating to UDM entity, or, when SMF entity is updated to UDM entity, SMF entity determines the need for updating DNN to UDM entity.SMF entity is not in all cases, all to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Fig. 9 is a kind of SMF entity structure schematic diagram provided by the embodiments of the present application.As shown in figure 9, the SMF entity may include:
Receiving unit 901, for receiving the request of the first service for the calling SMF entity that the first access and mobile management function AMF entity are sent, the request for calling the first service of SMF entity includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter indicates that the switching between different access technologies is supported in PDU session, or indicates the information of data network title DNN and SMF that SMF entity is used to user data management UDM registers entities PDU session；
Transmission unit 902, for sending the response for calling the first service of SMF entity to the first AMF entity, calling the response of the first service of SMF entity includes the second information, and the second information includes the information that PDU session establishment receives.
Optionally, when the switching between different access technologies is supported in the instruction PDU session of the first parameter, calling the request of the first service of SMF entity further includes the second parameter, and the second parameter, which is used to indicate, to be established the UE of PDU session and be registered in the first AMF by a kind of access technology.
Optionally, transmission unit 902 is also used to, and the request for calling the first service of UDM entity is sent to UDM entity, the information for the DNN and SMF entity for calling the request of the first service of UDM entity to use including PDU session.
The SMF entity can be used as the SMF entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus SMF entity can according to UE and AMF entity provide information determine PDU session between the support situation switched different access technologies, even UE is the case where network side is registered, it determines the need for updating to UDM entity, or, when SMF entity is updated to UDM entity, SMF entity determines the need for updating DNN to UDM entity.SMF entity is not in all cases, all to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Figure 10 is a kind of UDM entity structure schematic diagram provided by the embodiments of the present application.As shown in Figure 10, which includes:
Receiving unit 1001, for receiving the request of the first service of the calling UDM entity of conversation management functional SMF entity transmission, the request for calling the first service of UDM entity includes access style, and the corresponding UE of PDU session that access style is used to indicate SMF entity management passes through the first access technology in the first AMF registers entities；
Determination unit 1002, for determining that UE uses the 2nd AMF entity of the second access technology registration according to access style；
Transmission unit 1003, if existed for the 2nd AMF entity, the second service for then calling UDM entity notifies the 2nd AMF entity to update the subscription data of the UE saved, and the subscription data of UE includes the information of SMF entity and the DNN that the PDU session of SMF entity management uses.
The UDM entity can be used as the UDM entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus UDM entity can according to UE and AMF entity provide information determine PDU session between the support situation or even UE switched different access technologies network side register the case where, it is determined whether need to other AMF entities update UE signing information.UDM is not the signing information that all AMF entities registered to UE update UE as a result, saves signal resource.
Figure 11 is a kind of structural schematic diagram of UE provided by the embodiments of the present application.As shown in figure 11, which may include:
Transmitter 1101, for sending first message to AMF entity, first message includes the first information, the first information includes the information that PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter is used to indicate the switching between PDU session support different access technologies, or indicates the information for the DNN and SMF entity that conversation management functional SMF entity is used to UDM registers entities PDU session；
Receiver 1102, for receiving the second message of AMF entity transmission, second message includes the second information, and the second information includes the information that PDU session establishment receives.
Optionally, UE further include:
Processor 1103, for determining the first parameter according at least one in user equipment strategy or business.
Optionally, processor 1103 is also used to, and when the access style in the user equipment strategy indicates a variety of access technologies or the user equipment strategy does not include the access style, determines first parameter.
Optionally, transmitter 1101 is also used to, when UE is registered by a kind of access technology, alternatively, UE register and register by a variety of access technologies AMF entity difference when, to AMF entity send first message, first message includes the first information, the first information includes the information that PDU session is established in request, and the information that PDU session is established in request includes the first parameter, and the first parameter is used to indicate the information for the DNN and SMF entity that SMF entity is used to UDM registers entities PDU session.
Further optionally, UE provided by the embodiments of the present application can also include memory and processor 1103.Memory, in order to which processor transfers the instruction of memory, performs corresponding processing data for storing corresponding instruction and data.
The UE can be used as the UE of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus the network equipment can according to UE provide information determine PDU session between the support situation switched different access technologies, even UE is the case where network side is registered, it determines the need for updating to UDM entity, or, when SMF entity is updated to UDM entity, SMF entity determines the need for updating DNN to UDM entity.SMF entity is not in all cases, just to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Figure 12 is a kind of AMF entity structure schematic diagram provided by the embodiments of the present application.As shown in figure 12, which may include:
Receiver 1201, for receiving the first message of user equipment (UE) transmission, first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter is used to indicate the switching between PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and SMF that the PDU session of UDM registers entities uses to uniform data；
Transmitter 1202, for sending the request for calling the first service of SMF entity to SMF entity, calling the request of the first service of SMF entity includes the first information；
Receiver 1201 is also used to, and receives the response of the first service for the calling SMF entity that SMF entity is sent, and calling the response of the first service of SMF entity includes the second information, and the second information includes the information that PDU session establishment receives；
Transmitter 1202 is also used to, and sends the 4th message to UE, the 4th message includes the second information.
Optionally, the AMF entity further include:
Processor 1203, for determining that the second parameter, the second parameter are used to indicate UE and are registered in AMF by a kind of access technology；
Transmitter 1202 is also used to, and the request for calling the first service of SMF entity is sent to SMF entity, and calling the request of the first service of SMF entity includes the first information and the second parameter.
Further optionally, AMF entity provided by the embodiments of the present application can also include memory and processor 1203.Memory, in order to which processor transfers the instruction of memory, performs corresponding processing data for storing corresponding instruction and data.
The AMF entity can be used as the AMF entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus SMF entity can according to UE and AMF entity provide information determine PDU session between the support situation switched different access technologies, even UE is the case where network side is registered, it determines the need for updating to UDM entity, or, when SMF entity is updated to UDM entity, SMF entity determines the need for updating DNN to UDM entity.SMF entity is not in all cases, all to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Figure 13 is a kind of SMF entity structure schematic diagram provided by the embodiments of the present application.As shown in figure 13, which may include:
Receiver 1301, for receiving the request of the first service for the calling SMF entity that the first access and mobile management function AMF entity are sent, the request for calling the first service of SMF entity includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, the information that PDU session is established in request includes the first parameter, first parameter indicates that the switching between different access technologies is supported in PDU session, or indicates the information of data network title DNN and SMF that SMF entity is used to user data management UDM registers entities PDU session；
Transmitter 1302, for sending the response for calling the first service of SMF entity to the first AMF entity, calling the response of the first service of SMF entity includes the second information, and the second information includes the information that PDU session establishment receives.
Optionally, when the switching between different access technologies is supported in the instruction PDU session of the first parameter, calling the request of the first service of SMF entity further includes the second parameter, and the second parameter, which is used to indicate, to be established the UE of PDU session and be registered in the first AMF by a kind of access technology.
Optionally, transmitter 1302 is also used to, and the request for calling the first service of UDM entity is sent to UDM entity, the information for the DNN and SMF entity for calling the request of the first service of UDM entity to use including PDU session.
Further optionally, SMF entity provided by the embodiments of the present application can also include memory and processor 1303.Memory, in order to which processor transfers the instruction of memory, performs corresponding processing data for storing corresponding instruction and data.
The SMF entity can be used as the SMF entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus SMF entity can determine PDU according to the information that UE and AMF entity provides Session between the support situation or even UE switched different access technologies network side register the case where, it is determined whether need to UDM entity update, alternatively, when SMF entity to UDM entity update when, SMF entity determine the need for UDM entity update DNN.SMF entity is not in all cases, all to UDM entity more new information, alternatively, SMF entity is not all to update DNN to UDM entity in all cases when SMF entity is updated to UDM entity, to save signal resource as a result,.
Figure 14 is a kind of UDM entity structure schematic diagram provided by the embodiments of the present application.As shown in figure 14, which includes:
Receiver 1401, for receiving the request of the first service of the calling UDM entity of conversation management functional SMF entity transmission, the request for calling the first service of UDM entity includes access style, and the corresponding UE of PDU session that access style is used to indicate SMF entity management passes through the first access technology in the first AMF registers entities；
Processor 1402, for determining that UE uses the 2nd AMF entity of the second access technology registration according to access style；
Transmitter 1403, if existed for the 2nd AMF entity, the second service for then calling UDM entity notifies the 2nd AMF entity to update the subscription data of the UE saved, and the subscription data of UE includes the mark of SMF entity and/or the DNN that the PDU session of address and SMF entity management uses.
The UDM entity can be used as the UDM entity of the session establishing method as described in Fig. 3 to Fig. 6, and execute Fig. 3 step performed by UE into Fig. 6.Thus UDM entity can according to UE and AMF entity provide information determine PDU session between the support situation or even UE switched different access technologies network side register the case where, it is determined whether need to other AMF entities update UE signing information.UDM is not the signing information that all AMF entities registered to UE update UE as a result, saves signal resource.
The embodiment of the present application provides a kind of computer program product comprising instruction, when described instruction is run on computers, executes method/step of the above-mentioned Fig. 3 into Fig. 6.
The embodiment of the present application provides a kind of computer readable storage medium, for storing instruction, when described instruction executes on computers, executes method/step of the above-mentioned Fig. 3 into Fig. 6.
In above-mentioned each embodiment of the present invention, it can be realized wholly or partly by software, hardware, firmware or any combination thereof.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program product includes one or more computer instructions.When loading on computers and executing the computer program instructions, entirely or partly generate according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, special purpose computer, computer network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or it is transmitted from a computer-readable medium to another computer-readable medium, such as, the computer instruction can be transmitted from a web-site, computer, server or data center by wired (such as coaxial cable, optical fiber, Digital Subscriber Line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or data center.The computer readable storage medium can be any usable medium that computer can access or include the data storage devices such as one or more usable mediums integrated server, data center.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (for example, solid state hard disk) etc..
It is described above; the only preferable specific embodiment of the application, but the protection scope of the application is not limited thereto, and anyone skilled in the art is within the technical scope of the present application; any changes or substitutions that can be easily thought of, should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be subject to the protection scope in claims.

Claims (32)

  1. A kind of session establishing method characterized by comprising
    User equipment (UE) sends first message to access and mobile management function AMF entity, the first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and the SMF entity that PDU session described in UDM registers entities uses to uniform data；
    The UE receives the second message that the AMF entity is sent, and the second message includes the second information, and second information includes the information that the PDU session establishment receives.
  2. The method according to claim 1, wherein before the UE sends first message to AMF entity, further includes:
    The UE determines first parameter according at least one in user equipment strategy or business.
  3. According to the method described in claim 2, it is characterized in that, the UE determines that first parameter includes: according to user equipment strategy
    When the access style in the user equipment strategy indicates that a variety of access technologies or the user equipment strategy do not limit access style, the UE determines first parameter.
  4. Method according to claim 1 to 3, it is characterized in that, the UE sends first message to AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, the information for requesting to establish PDU session includes the first parameter, and first parameter is used to indicate SMF entity to the information of PDU session uses described in UDM registers entities DNN and the SMF entity, specifically includes:
    When the UE is registered by a kind of access technology, or, when the AMF entity difference that the UE is registered and registered by a variety of access technologies, the UE sends first message to AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, and the information for requesting to establish PDU session includes the first parameter, and first parameter is used to indicate SMF entity to the information of PDU session uses described in UDM registers entities DNN and the SMF entity.
  5. A kind of session establishing method characterized by comprising
    Access receives the first message that user equipment (UE) is sent with mobile management function AMF entity, the first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and the SMF that PDU session described in UDM registers entities uses to uniform data；
    The AMF entity sends the request for calling the first service of the SMF entity to the SMF entity, and the request of the first service for calling the SMF entity includes the first information；
    The AMF entity receives the response of the first service for the calling SMF entity that the SMF entity is sent, and the response of the first service for calling the SMF entity includes the second information, and second information includes the information that PDU session establishment receives；
    The AMF entity sends the 4th message to the UE, and the 4th message includes second information.
  6. According to the method described in claim 5, the first message includes the first information it is characterized in that, receiving the first message that UE is sent in the AMF entity, the first information includes the information that PDU session is established in request, described The information that PDU session is established in request includes the first parameter, and first parameter is used to indicate after the switching that the PDU session is supported between different access technologies, further includes:
    The AMF entity determines that the second parameter, second parameter are used to indicate the UE and are registered in the AMF by a kind of access technology；
    The AMF entity sends the request for calling the first service of the SMF entity to conversation management functional SMF entity, the request of the first service for calling the SMF entity includes the first information, specifically include: the AMF entity sends the request of the first service for calling the SMF entity to the SMF entity, and the request of the first service for calling the SMF entity includes the first information and second parameter.
  7. A kind of session establishing method characterized by comprising
    Conversation management functional SMF entity receives the request of the first service for the calling SMF entity that the first access is sent with mobile management function AMF entity, the request of the first service for calling the SMF entity includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter indicates that the switching between different access technologies is supported in the PDU session, or indicate the information of data network title DNN and the SMF that the SMF entity is used to PDU session described in user data management UDM registers entities；
    The SMF entity sends the response for calling the first service of the SMF entity to the first AMF entity, and the response of the first service for calling the SMF entity includes the second information, and second information includes the information that PDU session establishment receives.
  8. According to the method for claim 7, it is characterized in that, when the switching between different access technologies is supported in first parameter instruction PDU session, the request of the first service for calling the SMF entity further includes the second parameter, and second parameter, which is used to indicate, to be established the UE of the PDU session and be registered in the first AMF by a kind of access technology.
  9. Method according to claim 7 or 8, which is characterized in that further include:
    The SMF entity sends the request for calling the first service of the UDM entity to UDM entity, and the request of the first service for calling the UDM entity includes the information of DNN and the SMF entity that the PDU session uses.
  10. A kind of session establishing method characterized by comprising
    User data management UDM entity receives the request of the first service for the calling UDM entity that conversation management functional SMF entity is sent, the request of the first service for calling the UDM entity includes access style, and the corresponding UE of PDU session that the access style is used to indicate the SMF entity management passes through the first access technology in the first AMF registers entities；
    The UDM entity determines the 2nd AMF entity that the UE uses the second access technology to register according to the access style, if the 2nd AMF entity exists, then the UDM entity calls the second service of the UDM entity, the 2nd AMF entity is notified to update the subscription data of the UE saved, the subscription data of the UE includes the information of the SMF entity and the DNN that the PDU session of the SMF entity management uses.
  11. A kind of user equipment (UE) characterized by comprising
    Transmitter, for sending first message to access and mobile management function AMF entity, the first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity is used to PDU session described in uniform data management UDM registers entities Data network title DNN and the SMF entity information；
    Receiver, the second message sent for receiving the AMF entity, the second message include the second information, and second information includes the information that the PDU session establishment receives.
  12. UE according to claim 11, which is characterized in that further include:
    Processor, for determining first parameter according at least one in user equipment strategy or business.
  13. UE according to claim 12, which is characterized in that the processor is also used to, and when the access style in the user equipment strategy indicates that a variety of access technologies or the user equipment strategy do not limit access style, determines first parameter.
  14. UE described in 1-13 any one according to claim 1, it is characterized in that, the transmitter is also used to, when the UE is registered by a kind of access technology, or, when the AMF entity difference that the UE is registered and registered by a variety of access technologies, first message is sent to AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate SMF entity to the information of PDU session uses described in UDM registers entities DNN and the SMF entity.
  15. It is a kind of to access and mobile management function AMF entity characterized by comprising
    Receiver, for receiving the first message of user equipment (UE) transmission, the first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and the SMF that PDU session described in UDM registers entities uses to uniform data；
    Transmitter, for sending the request for calling the first service of the SMF entity to SMF entity, the request of the first service for calling the SMF entity includes the first information；
    The receiver is also used to, and receives the response of the first service for the calling SMF entity that the SMF entity is sent, and the response of the first service for calling the SMF entity includes the second information, and second information includes the information that PDU session establishment receives；
    The transmitter is also used to, and Xiang Suoshu UE sends the 4th message, and the 4th message includes second information.
  16. AMF entity according to claim 15, which is characterized in that further include:
    Processor, for determining that the second parameter, second parameter are used to indicate the UE and are registered in the AMF by a kind of access technology；
    The transmitter is also used to, and Xiang Suoshu SMF entity sends the request of the first service for calling the SMF entity, and the request of the first service for calling the SMF entity includes the first information and second parameter.
  17. A kind of conversation management functional SMF entity characterized by comprising
    Receiver, for receiving the request of the first service for the calling SMF entity that the first access and mobile management function AMF entity are sent, the request of the first service for calling the SMF entity includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter indicates that the switching between different access technologies is supported in the PDU session, or indicate the information of data network title DNN and the SMF that the SMF entity is used to PDU session described in user data management UDM registers entities；
    Transmitter, for sending the response for calling the first service of the SMF entity to the first AMF entity, the response of the first service for calling the SMF entity includes the second information, and second information includes that PDU session establishment connects The information received.
  18. SMF entity according to claim 17, it is characterized in that, when the switching between different access technologies is supported in first parameter instruction PDU session, the request of the first service for calling the SMF entity further includes the second parameter, and second parameter, which is used to indicate, to be established the UE of the PDU session and be registered in the first AMF by a kind of access technology.
  19. SMF entity described in 7 or 18 according to claim 1, it is characterized in that, the transmitter is also used to, the request for calling the first service of the UDM entity is sent to UDM entity, the request of the first service for calling the UDM entity includes address and/or the mark of DNN and the SMF entity that the PDU session uses.
  20. A kind of user data management UDM entity characterized by comprising
    Receiver, for receiving the request of the first service of the calling UDM entity of conversation management functional SMF entity transmission, the request of the first service for calling the UDM entity includes access style, and the corresponding UE of PDU session that the access style is used to indicate the SMF entity management passes through the first access technology in the first AMF registers entities；
    Processor, for determining that the UE uses the 2nd AMF entity of the second access technology registration according to the access style；
    Transmitter, if existed for the 2nd AMF entity, then call the second service of the UDM entity, the 2nd AMF entity is notified to update the subscription data of the UE saved, the subscription data of the UE includes the information of the SMF entity and the DNN that the PDU session of the SMF entity management uses.
  21. A kind of user equipment (UE) characterized by comprising
    Transmission unit, for sending first message to access and mobile management function AMF entity, the first message includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and the SMF entity that PDU session described in UDM registers entities uses to uniform data；
    Receiving unit, the second message sent for receiving the AMF entity, the second message include the second information, and second information includes the information that the PDU session establishment receives.
  22. UE according to claim 21, which is characterized in that further include:
    Determination unit, for determining first parameter according at least one in user equipment strategy or business.
  23. UE according to claim 22, which is characterized in that the determination unit is also used to, and when the access style in the user equipment strategy indicates that a variety of access technologies or the user equipment strategy do not limit access style, determines first parameter.
  24. According to UE described in claim 21-23 any one, it is characterized in that, the transmission unit is also used to, when the UE is registered by a kind of access technology, or, when the AMF entity difference that the UE is registered and registered by a variety of access technologies, first message is sent to AMF entity, the first message includes the first information, the first information includes the information that PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter is used to indicate SMF entity to the information of PDU session uses described in UDM registers entities DNN and the SMF entity.
  25. It is a kind of to access and mobile management function AMF entity characterized by comprising
    Receiving unit, for receiving the first message of user equipment (UE) transmission, the first message includes the first information, and the first information includes the information that protocol Data Unit PDU session is established in request, the information for requesting to establish PDU session Include the first parameter, first parameter is used to indicate the switching between the PDU session support different access technologies, or instruction conversation management functional SMF entity manages the information of data network title DNN and the SMF that PDU session described in UDM registers entities uses to uniform data；
    Transmission unit, for sending the request for calling the first service of the SMF entity to SMF entity, the request of the first service for calling the SMF entity includes the first information；
    The receiving unit is also used to, and receives the response of the first service for the calling SMF entity that the SMF entity is sent, and the response of the first service for calling the SMF entity includes the second information, and second information includes the information that PDU session establishment receives；
    The transmission unit is also used to, and Xiang Suoshu UE sends the 4th message, and the 4th message includes second information.
  26. AMF entity according to claim 25, which is characterized in that further include:
    Determination unit, for determining that the second parameter, second parameter are used to indicate the UE and are registered in the AMF by a kind of access technology；
    The transmission unit is also used to, and Xiang Suoshu SMF entity sends the request of the first service for calling the SMF entity, and the request of the first service for calling the SMF entity includes the first information and second parameter.
  27. A kind of conversation management functional SMF entity characterized by comprising
    Receiving unit, for receiving the request of the first service for the calling SMF entity that the first access and mobile management function AMF entity are sent, the request of the first service for calling the SMF entity includes the first information, the first information includes the information that protocol Data Unit PDU session is established in request, it is described that the information for establishing PDU session is requested to include the first parameter, first parameter indicates that the switching between different access technologies is supported in the PDU session, or indicate the information of data network title DNN and the SMF that the SMF entity is used to PDU session described in user data management UDM registers entities；
    Transmission unit, for sending the response for calling the first service of the SMF entity to the first AMF entity, the response of the first service for calling the SMF entity includes the second information, and second information includes the information that PDU session establishment receives.
  28. SMF entity according to claim 27, it is characterized in that, when the switching between different access technologies is supported in first parameter instruction PDU session, the request of the first service for calling the SMF entity further includes the second parameter, and second parameter, which is used to indicate, to be established the UE of the PDU session and be registered in the first AMF by a kind of access technology.
  29. The SMF entity according to claim 27 or 28, it is characterized in that, the transmission unit is also used to, the request for calling the first service of the UDM entity is sent to UDM entity, the request of the first service for calling the UDM entity includes address and/or the mark of DNN and the SMF entity that the PDU session uses.
  30. A kind of user data management UDM entity characterized by comprising
    Receiving unit, for receiving the request of the first service of the calling UDM entity of conversation management functional SMF entity transmission, the request of the first service for calling the UDM entity includes access style, and the corresponding UE of PDU session that the access style is used to indicate the SMF entity management passes through the first access technology in the first AMF registers entities；
    Determination unit, for determining that the UE uses the 2nd AMF entity of the second access technology registration according to the access style；
    Transmission unit calls the second service of the UDM entity if existed for the 2nd AMF entity, and the 2nd AMF entity is notified to update the subscription data of the UE saved, and the subscription data of the UE includes described The DNN that the PDU session of the information of SMF entity and the SMF entity management uses.
  31. A kind of computer readable storage medium, including computer-readable instruction, when computer is read and executes the computer-readable instruction, so that computer executes the method as described in claim 1-10 any one.
  32. A kind of computer program product, including computer-readable instruction, when computer reads and execute the computer-readable instruction, so that computer executes the method as described in claim 1-10 any one.
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