CN108810987A

CN108810987A - The method of wireless communication, AMF, RAN and SMF

Info

Publication number: CN108810987A
Application number: CN201710283997.XA
Authority: CN
Inventors: 朱奋勤; 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-26
Filing date: 2017-04-26
Publication date: 2018-11-13
Anticipated expiration: 2037-04-26
Also published as: CN108810987B

Abstract

This application provides a kind of method of wireless communication, AMF, RAN and SMF, when the AMF for providing service for multiple UE for residing under RAN changes, AMF sends request message to RAN, so that RAN delete or update multiple UE N2 interfaces context in AMF information, to reduce signaling overheads.This method includes：AMF determines the AMF information in the context for needing to change the N2 interfaces in the first RAN；The AMF sends the first request message to the first RAN, AMF information in the context that first request message is used to that the first RAN to be asked to delete the N2 interfaces for being directed to the first UE groups, or by for the AMF information updates in the context of the N2 interfaces of the first UE groups be for the first UE groups target AMF information, wherein, UE in first UE groups is to reside in the first RAN, by some or all of AMF services UE.

Description

The method of wireless communication, AMF, RAN and SMF

Technical field

This application involves the communications fields, and more particularly, to a kind of method of wireless communication, AMF, RAN and SMF.

Background technology

In 5G communication systems, core net access and mobile management function to ps domain (Core Access and Mobility Management Function, AMF) it is responsible for terminal device core network access and mobile management.In AMF load balancings, it is System may be that terminal device distributes new AMF, at this point, may there are the following problems：In AMF load balancings, AMF may be needed It moves out multiple terminal devices, at this point, AMF needs wireless access network (the Radio Access being resident to each terminal device Network, RAN) individually send message so that RAN modifications for the N2 of each terminal device, (signaling plane between RAN and AMF connects Mouthful) interface, however, individually sending messages to the method that RAN carries out N2 interface modifications for each terminal device using this It can lead to a large amount of N2 signalings.

Therefore, how in AMF load balancing, need to move out simultaneously multiple terminal devices when, notice RAN move out this part end End equipment, while not will produce a large amount of N2 signalings again, it is a technical problem urgently to be resolved hurrily.

Invention content

The application provides a kind of method and system of wireless communication, in AMF load balancing, and needs to will reside under RAN Multiple terminal devices when moving out, send request message to RAN so that RAN delete or update reside in it is multiple under oneself AMF information in the context of the N2 signaling connection interfaces of terminal device avoids sending primary request for each terminal device Message, to reduce signaling overheads.

In a first aspect, the embodiment of the present application provides a kind of method of wireless communication, including：

Core net accesses and mobile management function to ps domain AMF determines the needed to change in the first wireless access network equipment RAN AMF information in the context of one signaling connection interface；The AMF sends the first request message to the first RAN, first request Message is used to that the first RAN to be asked to delete for the AMF in the context of the first signaling connection interface of UE in the first UE groups Information, or by for the AMF information updates in the context of the first signaling connection interface of UE in the first UE groups be for The information of the target AMF of UE in first UE groups, wherein UE in the first UE groups be reside in the first RAN, and currently by Some or all of AMF services UE, the interface of the first signaling connection interface between the first RAN and the AMF, the AMF The interface transport layer information for the mark either interface identifier of AMF or AMF that information is AMF.

Therefore, in the method for the wireless communication of the embodiment of the present application, when to reside in the first UE groups under the first RAN UE provide service AMF change when, AMF to the first RAN send request message, request the first RAN delete or update be directed to AMF information in first UE groups in the context of the first signaling connection interface of each UE, it is thus possible to avoid being directed to the first UE Each UE sends a request message to the first RAN in group, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of first aspect, first request is sent to the first RAN in the AMF and disappeared Before breath, this method further includes：

Source AMF determines that it is the first UE groups to wait moving out and reside in all UE in the first RAN, and determine by this The first interface mark for the first signaling connection interface of each UE in the first UE groups of one RAN distribution, this first connects Down direction of the mouth mark in the first signaling connection interface identifies UE；Or

Target AMF determinations are newly moved into, the AMF information in the context of the first signaling connection interface of UE is not updated and stayed All UE stayed in the first RAN are the first UE groups, and determine and be directed in the first UE groups often by what the first RAN was distributed The first interface of the first signaling connection interface of a UE identifies.

Therefore, in the method for the wireless communication of the embodiment of the present application, when to reside in the first UE groups under the first RAN UE provide service AMF change when, the first UE groups can be determined by source AMF, the first UE can also be determined by target AMF Group.

It is the 2nd UE groups that AMF determinations in source, which do not move out and reside in all UE in the first RAN, and determine by this The first interface mark for the first signaling connection interface of each UE in the 2nd UE groups of one RAN distribution, wherein this Two UE groups are other UE in addition to the first UE groups resided under the first RAN.

Therefore, in the method for the wireless communication of the embodiment of the present application, it can be determined by source AMF and not move out and reside in All UE in first RAN are that the 2nd UE groups according to the UE in the 2nd UE groups, determine the first UE groups in turn, at this point, the first UE UE in group is either be in the UE of connected state, and can be the UE in Idle state.

Optionally, in a kind of realization method of first aspect, when in the source, AMF determines the first UE groups, the AMF to this First RAN sends the first request message, including：

Source AMF sends first request message to the first RAN.

Optionally, in a kind of realization method of first aspect, target AMF determines the first UE groups, including：

Target AMF receives the first instruction message from source AMF, which includes each UE in multiple UE Mark；

Target AMF determines the first UE groups according to first instruction message；

When target AMF determines the first UE groups, which sends the first request message to the first RAN, including：

Target AMF sends first request message to the first RAN.

Optionally, in a kind of realization method of first aspect, before target AMF determines the first UE groups, the party Method further includes：

Source AMF is that each UE in multiple UE distributes target AMF.

Optionally, in a kind of realization method of first aspect, which is characterized in that target AMF is sent to the first RAN First request message, including：

Target AMF sends first request message to the first RAN, which includes target AMF Information and first request message are for asking the first RAN will be for first signaling of each UE in the first UE groups The information that AMF information updates in the context of connecting interface are target AMF.

Therefore, in the method for the wireless communication of the embodiment of the present application, target AMF sends request message to the first RAN, makes It will be needle for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups to obtain the first RAN To the information of the target AMF of each UE in the first UE groups, it is thus possible to avoid for each UE in the first UE groups to first RAN sends a request message, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of first aspect, source AMF sends the first request message to the first RAN, Including：

Source AMF sends first request message to the first RAN, and first request message is for asking the first RAN Delete the AMF information in the context of the first signaling connection interface of each UE in the first UE groups, or will be directed to this AMF information updates in one UE groups in the context of the first signaling connection interface of UE are the target for UE in the first UE groups The information of AMF.

Optionally, in a kind of realization method of first aspect, first request is sent to the first RAN in source AMF Before message, this method further includes：

Source AMF is that each UE distributes target AMF respectively in the first UE groups；

Source AMF sends the first request message to the first RAN, including：

Source AMF sends first request message to the first RAN, which includes being directed to the first UE groups In each UE target AMF mark and first request message for asking the first RAN that will be directed in the first UE groups AMF information updates in the context of the first signaling connection interface of each UE are the mesh for each UE in the first UE groups Mark the information of AMF.

Therefore, in the method for the wireless communication of the embodiment of the present application, when to reside in the first UE groups under the first RAN UE provide service AMF change when, source AMF to the first RAN send request message, request the first RAN delete or update needle To the AMF information in the context of the first signaling connection interface of each UE in the first UE groups, it is thus possible to avoid being directed to first Each UE sends a request message to the first RAN in UE groups, in turn, reduces and is opened because sending the signaling that request message generates Pin.

Optionally, in a kind of realization method of first aspect, each UE difference in source AMF is the first UE groups It is assigned with after target AMF, this method further includes：

Source AMF sends the contextual information of corresponding UE to the target AMF for each UE in the first UE groups.

Optionally, in a kind of realization method of first aspect, which includes being distributed by the first RAN For in the first UE groups the first signaling connection interface of each UE first interface mark, the first interface mark for The down direction of the first signaling connection interface identifies the UE in the first UE groups；Or

First request message includes first signaling for each UE in the 2nd UE groups distributed by the first RAN The first interface of connecting interface identifies, and the 2nd UE groups are other UE in addition to the first UE groups resided under the first RAN, The first interface is identified for the UE in identifying the 2nd UE groups in the down direction of the first signaling connection interface.

Optionally, in a kind of realization method of first aspect, this method further includes：

Source AMF or target AMF determine the 3rd UE groups, and the UE in the 3rd UE groups exists by conversation management functional SMF The protocol Data Unit PDU sessions of service；

Source AMF or target AMF sends the second request message to the SMF, and second request message is for asking the SMF The AMF information in the context for the PDU sessions of each UE in the 3rd UE groups is deleted, or the 3rd UE groups will be directed to In each UE PDU sessions context in AMF information updates be letter for the target AMF of each UE in the 3rd UE groups Breath.

Therefore, in the method for the wireless communication of the embodiment of the present application, when in the 3rd UE groups to provide service by SMF When UE provides the AMF changes serviced, either target AMF deletes or updates needle to source AMF to SMF transmission request message requests SMF To the AMF information in the context of the PDU sessions of each UE in the 3rd UE groups, it is thus possible to avoid for every in the 3rd UE groups A UE sends a request message to SMF, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of first aspect, source AMF determines the 3rd UE groups, including：

Source AMF, which is determined, to be waited moving out, and there are all UE by the SMF PDU sessions serviced.

Optionally, in a kind of realization method of first aspect, when in the source, AMF determines the 3rd UE groups, source AMF or Target AMF sends the second request message to the SMF, including：

Source AMF sends second request message to the SMF.

Optionally, in a kind of realization method of first aspect, target AMF determines the 3rd UE groups, including：

Target AMF receives the second instruction message from source AMF, which includes each at least one UE The mark of UE and the SMF information that service is provided for PDU sessions；

Target AMF is determined according to second instruction message and is newly moved into and there is the institute by the SMF PDU sessions serviced It is the 3rd UE groups to have UE；

When target AMF determines the 3rd UE groups, source AMF or target AMF send the second request to the SMF and disappear Breath, including：

Target AMF sends second request message to the SMF.

Optionally, in a kind of realization method of first aspect, second request message is sent to the SMF in source AMF Before, this method further includes：

Source AMF is that each UE in the 3rd UE groups distributes target AMF respectively；

Source AMF sends the second request message to the SMF, including：

Source AMF sends the second request message to the SMF, which includes each UE in the 3rd UE groups Mark and for the target AMF of each UE in the 3rd UE groups information, second request message be used for ask the SMF that will be directed to AMF information updates in 3rd UE groups in the context of the PDU sessions of each UE are for each UE in the 3rd UE groups The information of target AMF.

Therefore, in the method for the wireless communication of the embodiment of the present application, when in the 3rd UE groups to provide service by SMF When the AMF that UE provides service changes, request message can be sent from target AMF to SMF, request SMF updates are directed to the 3rd UE groups In each UE PDU sessions context in AMF information, it is thus possible to avoid for each UE in the 3rd UE groups to SNF A request message is sent, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of first aspect, in the source, AMF is not that the 3rd UE groups distribute target AMF When, source AMF sends the second request message to the SMF, including：

Source AMF sends second request message to the SMF, which includes each UE in the 3rd UE groups Mark, the first signaling connection which is used to ask the SMF to delete for each UE in the 3rd UE groups connects The information of AMF in the context of mouth.

Therefore, in the method for the wireless communication of the embodiment of the present application, when the UE in the 3rd UE groups to be serviced by SMF is carried When changing for the AMF of service, request message can be sent from source AMF to SMF, request SMF is deleted for each in the 3rd UE groups AMF information in the context of the PDU sessions of UE, it is thus possible to avoid sending one to SNF for each UE in the 3rd UE groups Secondary request message reduces the signaling overheads generated because sending request message in turn.

Optionally, in a kind of realization method of first aspect, target AMF sends second request message to the SMF, Including：

Target AMF sends the second request message to the SMF, which includes each UE in the 3rd UE groups Mark and target AMF information, second request message is for asking the SMF will be for each UE in the 3rd UE groups The information that AMF information updates in the context of PDU sessions are target AMF.

Target AMF from the first RAN receive Redirection Request message, the Redirection Request message include by this first The first interface mark for the first signaling connection interface of each UE in the 4th UE groups of RAN distribution, wherein the first interface Identify and identify UE for the down direction in the first signaling connection interface, in the 4th UE groups the AMF information of each UE be should The information of target AMF；

Target AMF preserves the first interface mark for the first signaling connection interface of each UE in the 4th UE groups Know；

Second interface mark of the target AMF distribution for the first signaling connection interface of each UE in the 4th UE groups Know；

Target AMF sends the response message for the Redirection Request message to the first RAN, which includes It is identified for the first interface of the first signaling connection interface of each UE in the 4th UE groups and for every in the 4th UE groups The second interface of the first signaling connection interface of a UE identifies, which identifies in the first signaling connection interface Up direction identifies UE.

Therefore, in the method for the wireless communication of the embodiment of the present application, as the UE to reside in the 4th UE groups under RAN When providing the AMF changes of service, target AMF receives the Redirection Request message that the first RAN is sent, and according to redirection request Message distribution can assist the in turn for the second interface mark of the first signaling connection interface of each UE in the 4th UE groups One RAN establishes the first signaling connection interface for each UE in the 4th UE groups, it is thus possible to avoid for every in the 4th UE groups A UE sends the message that the first signaling connection is established in primary request to RAN, in turn, reduces the letter generated because sending request message Enable expense.

Optionally, in a kind of realization method of first aspect, in the Redirection Request message for receiving RAN transmissions Later, this method further includes：

Target AMF is that partly or entirely UE distributes respective UE temporary identifiers in the 4th UE groups.

Optionally, in a kind of realization method of first aspect, which is the mark of AMF or the interface of AMF The interface transport layer information of mark or AMF.

Second aspect, the embodiment of the present application provide a kind of method of wireless communication, including：

Wireless access network equipment RAN receives the first request message from core net access and mobile management function to ps domain AMF, this One request message is used to ask the RAN to delete for the first signaling connection interface of each UE in first terminal equipment UE group AMF information hereinafter, or will be for the AMF in the context of the first signaling connection interface of each UE in the first UE groups Information update is the information for the target AMF of each UE in the first UE groups, wherein the UE in the first UE groups is to reside in The part or all of UE of the RAN, the interface of the first signaling connection interface between the RAN and the AMF；The RAN according to this first Request message deletes the AMF information in the context of the first signaling connection interface of each UE in the first UE groups, or will It is for the first UE for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups The information of the target AMF of each UE in group.

Therefore, in the method for the wireless communication of the embodiment of the present application, as the UE to reside in the first UE groups under RAN When providing the AMF changes of service, AMF is deleted to RAN transmission request messages, request RAN or update is directed in the first UE groups often AMF information in the context of the first signaling connection interface of a UE, it is thus possible to avoid for each UE in the first UE groups A request message is sent to RAN, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of second aspect, which includes being directed to by what the RAN was distributed The first interface mark of the first signaling connection interface of each UE in first UE groups, first interface mark for this The down direction of one signaling connection interface identifies UE, and each UE is all in connected state in the first UE groups；

The RAN deletes the upper of the first signaling connection interface of each UE in the first UE groups according to first request message AMF information hereinafter, or will be for the AMF in the context of the first signaling connection interface of each UE in the first UE groups Information update is the information for the target AMF of each UE in the first UE groups, including：

The RAN should connect according to what first request message carried for the first signaling connection of each UE in the first UE groups The first interface mark of mouth deletes the AMF letters in the first UE groups in the context of the first signaling connection interface of each UE Breath.

Optionally, in a kind of realization method of second aspect, which includes being directed to by what the RAN was distributed The first interface of the first signaling connection interface of each UE in 2nd UE groups identifies, wherein the 2nd UE groups are to reside in Other UE in addition to the first UE groups that are under the RAN and being serviced by the AMF, first interface mark is in first letter The down direction of connecting interface is enabled to identify UE；

The RAN is identified according to the first interface of the first signaling connection interface for each UE that should be directed in the 2nd UE groups, Determine the UE in the first UE groups；

After the UE in determining the first UE groups, first signaling which deletes each UE in the first UE groups connects AMF information in the context of connection interface.

Optionally, in a kind of realization method of second aspect, after receiving first request message from the AMF, This method further includes：

The RAN is determined and all is serviced by the AMF according to the context of the first signaling connection interface of the UE in the RAN UE be the first UE groups；

The RAN deletes the upper of the first signaling connection interface of each UE in the first UE groups according to first request message AMF information hereinafter.

Therefore, in the method for the wireless communication of the embodiment of the present application, as the UE to reside in the first UE groups under RAN When providing the AMF of service and changing, AMF sends request message to RAN, and request RAN deletes for each UE in the first UE groups AMF information in the context of one signaling connection interface, it is thus possible to avoid sending out to RAN for each UE in the first UE groups A request message is sent, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of second aspect, which includes being directed to by what the RAN was distributed The first interface mark of the first signaling connection interface of each UE in first UE groups, and for each in the first UE groups The information of the target AMF of UE, down direction of the first interface mark in the first signaling connection interface identify UE；

First signaling connection that should be directed to each UE in the first UE groups that the RAN is carried according to first request message The first interface of interface identifies, and for the information of the target AMF of each UE in the first UE groups, will be directed to the first UE groups In each UE the first signaling connection interface context in AMF information updates be mesh for each UE in the first UE groups Mark the information of AMF.

Therefore, in the method for the wireless communication of the embodiment of the present application, as the UE to reside in the first UE groups under RAN When providing the AMF of service and changing, AMF sends request message to RAN, request RAN updates for each UE in the first UE groups the AMF information in the context of one signaling connection interface, it is thus possible to avoid sending out to RAN for each UE in the first UE groups A request message is sent, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of second aspect, this method further includes：

When the RAN receives Non-Access Stratum (Non-Access Stratum, NAS) message at the first UE, alternatively, When the RAN needs to send first message to core net, which inquires the contextual information of the first UE, wherein the first UE is in Connected state, the first message are the message for the arbitrary first signaling connection interface of the first UE；

When RAN determinations do not find that the corresponding AMF of the first UE are identified from the context of the first UE, the RAN Target AMF is distributed for the first UE.

Optionally, in a kind of realization method of second aspect, which is the mark of AMF or the interface of AMF The interface transport layer information of mark or AMF.

The third aspect, the embodiment of the present application provide a kind of method of wireless communication, including：

Conversation management functional SMF receives the second request message from core net access and mobile management function to ps domain AMF, wherein The protocol Data Unit PDU sessions that second request message is used to that the SMF to be asked to delete each UE being directed in the 3rd UE groups AMF information in context, or by for the AMF information in the context of the PDU sessions of each UE in the 3rd UE groups more New is the information for the target AMF of each UE in the 3rd UE groups, and the UE in the 3rd UE groups is currently to be serviced by the AMF, And there is the PDU sessions serviced by SMF, in the context of the PDU sessions of each UE in the 3rd UE groups preserved in the SMF AMF information is identical as the information of the AMF；The SMF is deleted according to second request message for each UE's in the 3rd UE groups AMF information in the context of PDU sessions, or will be in the context of the PDU sessions of each UE in the 3rd UE groups AMF information updates are the information for the target AMF of each UE in the 3rd UE groups.

Therefore, in the method for the wireless communication of the embodiment of the present application, when in the 3rd UE groups to provide service by SMF When the AMF that UE provides service changes, AMF sends request message to SMF, and request SMF is deleted or update is in the 3rd UE groups AMF information in the context of the PDU sessions of each UE, it is thus possible to avoid sending out to SMF for each UE in the 3rd UE groups A request message is sent, in turn, reduces the signaling overheads generated because sending request message.

Optionally, in a kind of realization method of the third aspect, which receives the second request message from AMF, including：

The SMF receives second request message from the AMF, which includes each UE in the 3rd UE groups Mark and for the target AMF of each UE in the 3rd UE groups information；

The SMF is deleted according to second request message in the context for the PDU sessions of each UE in the 3rd UE groups AMF information, or by for the AMF information updates in the context of the PDU sessions of each UE in the 3rd UE groups be for The information of the target AMF of each UE in 3rd UE groups, including：

The SMF is according to the mark of each UE in the 3rd UE groups and for the target AMF of each UE in the 3rd UE groups Information will be for the 3rd UE groups for the AMF information updates in the context of the PDU sessions of each UE in the 3rd UE groups In each UE target AMF information.

The SMF receives second request message from the AMF, which includes each UE in the 3rd UE groups Mark；

The SMF deletes the PDU sessions for each UE in the 3rd UE groups according to the mark of each UE in the 3rd UE groups Context in AMF information.

Optionally, in a kind of realization method of the third aspect, in first request message does not include the 3rd UE groups The mark of each UE, but when including the information of source AMF, the RAN according to the PDU sessions of source AMF information inquiries UE up and down Text, and determine UE PDU sessions context in AMF information UE identical with source AMF information be the first UE groups, And delete the AMF information in the first UE groups in the context of the PDU sessions of each UE.

Optionally, in a kind of realization method of the third aspect, which is the mark of AMF or the interface of AMF The interface transport layer information of mark or AMF.

Fourth aspect provides a kind of AMF, which includes the arbitrary possibility for executing first aspect or first aspect Realization method in method module.

5th aspect, provides a kind of RAN, which includes the arbitrary possibility for executing second aspect or second aspect Realization method in method module.

6th aspect, provides a kind of SMF, which includes the arbitrary possibility for executing the third aspect or the third aspect Realization method in method module.

7th aspect, provides a kind of AMF, which includes processor, memory and communication interface.Processor and storage Device is connected with communication interface.For storing instruction, processor is used for for executing the instruction, communication interface in processor memory Control under communicated with other network elements.When the processor executes the instruction of memory storage, which makes the processing Device executes the method in the arbitrary possible realization method of first aspect or first aspect.

Eighth aspect provides a kind of RAN, which includes processor, memory and communication interface.Processor and storage Device is connected with communication interface.For storing instruction, processor is used for for executing the instruction, communication interface in processor memory Control under communicated with other network elements.When the processor executes the instruction of memory storage, which makes the processing Device executes the method in the arbitrary possible realization method of second aspect or second aspect.

9th aspect, provides a kind of SMF, which includes processor, memory and communication interface.Processor and storage Device is connected with communication interface.For storing instruction, processor is used for for executing the instruction, communication interface in processor memory Control under communicated with other network elements.When the processor executes the instruction of memory storage, which makes the processing Device executes the method in the arbitrary possible realization method of the third aspect or the third aspect.

Tenth aspect, provides a kind of computer storage media, and have program stored therein code in the computer storage media, should Program code is used to indicate the finger of the method in any possible realization method for executing above-mentioned first aspect or first aspect It enables.

On the one hand tenth, provides a kind of computer storage media, have program stored therein code in the computer storage media, The program code is used to indicate the method in any possible realization method for executing above-mentioned second aspect or second aspect Instruction.

12nd aspect, provides a kind of computer storage media, and have program stored therein code in the computer storage media, The program code is used to indicate the method in any possible realization method for executing the above-mentioned third aspect or the third aspect Instruction.

13rd aspect, provide it is a kind of include instruction computer program product make when run on a computer It obtains computer and executes the method that above-mentioned various aspects are somebody's turn to do.

Description of the drawings

Fig. 1 shows a kind of schematic diagram of the communication system of the method for wireless communication using the application.

Fig. 2 is the schematic flow chart according to a kind of method of wireless communication of the embodiment of the present application.

Fig. 3 is the schematic flow chart according to a kind of method of wireless communication of another embodiment of the application.

Fig. 4 is the schematic flow chart according to a kind of method of wireless communication of the application another embodiment.

Fig. 5 shows a kind of schematic block diagram of computer equipment provided by the embodiments of the present application.

Fig. 6 shows the schematic block diagram of RAN provided by the embodiments of the present application a kind of.

Fig. 7 shows the schematic block diagram of the AMF of the embodiment of the present application.

Fig. 8 shows the schematic block diagram of the RAN of the embodiment of the present application.

Fig. 9 shows the schematic block diagram of the SMF of the embodiment of the present application.

Specific implementation mode

Below in conjunction with attached drawing, the technical solution in the application is described.

It should be understood that the technical solution of each embodiment of the application, can be applied to various lead to according to access standard to divide Letter system, such as：Global system for mobile communications (Global System of Mobile communication, GSM), code point Multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access Wireless, WCDMA), General Packet Radio Service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE), LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplexs (Time Division Duplex, TDD), universal mobile communications system Unite (Universal Mobile Telecommunication System, UMTS), cellular wireless network system, 5G systems with And following communication system etc..

Fig. 1 shows a kind of schematic diagram of the communication system 100 of the method for wireless communication using the application.Such as Fig. 1 institutes Show, the communication system 100 mainly include AMF 101, conversation management functional equipment (Session Management Function, SMF) 102, wireless access network (Radio Access Network, RAN) 103, authentication server function device (Authentication Server Function, AUSF) 104, uniform data management equipment (Unified Data Management, UDM) 105, policy control functions equipment (Policy Control function, PCF) 106, data network (Data Network, DN) 107, user plane functions equipment (User Plane Function, UPF) 108, user equipment (User Equipment, UE) 109.Wherein, UE 109 is connect by N1 interfaces with AMF 101, and UE 109 passes through wireless heterogeneous networks (Radio Resource Control, RRC) agreement is connect with RAN 103；RAN 103 is connect by N2 interfaces with AMF 101, RAN 103 is connect by N3 interfaces with UPF 108；It is connected by N9 interfaces between multiple UPF 108, UPF 108 is connect by N6 Mouth is connect with DN 107, meanwhile, UPF 108 is connect by N4 interfaces with SMF 102；SMF 102 passes through N7 interfaces and PCF 106 Connection, SMF 102 are connect by N10 interfaces with UDM 105, meanwhile, SMF 102 is connect by N11 interfaces with AMF 101；It is more It is connected by N14 interfaces between a AMF 101, AMF 101 is connect by N8 interfaces with UDM 105, and AMF 101 is connect by N12 Mouth is connect with AUSF 104, meanwhile, AMF 101 is connect by N15 interfaces with PCF 106；AUSF 104 by N13 interfaces with The connections of UDM 105.AMF 101 and SMF 102 obtains user contracting data by N8 and N10 interfaces from UDM 105 respectively, passes through N15 and N7 interfaces are from 106 acquisition strategy data of PCF.SMF 102 passes through N4 Interface Controllers UPF 108.

User equipment (User Equipment, UE) 109 can be referred to as terminal (Terminal), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal) etc., which can be through wireless access network (Radio Access Network, RAN) it is communicated with one or more core nets, UE can be described as access terminal, terminal device, user Unit, subscriber station, movement station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication are set Standby, user agent or user apparatus.UE can be cellular phone, wireless phone, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) stand, individual digital Handle (Personal Digital Assistant, PDA), the handheld device with wireless communication function, computer equipment or The terminal being connected in other processing equipments, mobile unit, wearable device and the future 5G networks of radio modem Equipment etc..

May include the equipment communicated with UE 109 in wireless access network RAN 103, for example, base station or base station control Device etc..It should be understood that the RAN 103 can be with the arbitrary number UE communication similar to UE 109.Each RAN can be specifically It manages region and communication overlay is provided, and can be led to the terminal device (such as UE) in the overlay area (cell) Letter, RAN 103 can support the communication protocol of different systems, or can support different communication patterns.Optionally, the RAN 103 can be evolved base station (Evolved Node B, eNodeB) or Wireless Fidelity access point (Wireless Fidelity Access Point, WiFi AP) or be World Interoperability for Microwave Access, WiMax base station (Worldwide Interoperability for Microwave Access Base Station, WiMAX BS) or cloud wireless access Wireless controller or the network equipment in network (Cloud Radio Access Network, CRAN) can be 5G nets The public land mobile network (Public Land Mobile Network, PLMN) of the network equipment or the following evolution in network In the network equipment etc..

Optionally, an AMF 101 can serve multiple UE 109 simultaneously.

Optionally, a SMF 102 can serve multiple UE 109 simultaneously.

Optionally, AMF 101 can be that UE 109 reselects service AMF.

It should be understood that when UE 109 enters Idle state, the RRC connections for the UE 109 and N2 interfaces can be discharged.

The various aspects or feature of the application may be implemented into method, apparatus or use standard program and/or engineering technology Product.Term " product " used herein is covered can be from any computer-readable device, carrier or the meter of medium access Calculation machine program.For example, computer-readable medium may include, but it is not limited to：Magnetic memory device is (for example, hard disk, floppy disk or tape Deng), CD is (for example, compact disk (Compact Disc, CD), digital versatile disc (Digital Versatile Disc, DVD) Deng), smart card and flush memory device are (for example, Erarable Programmable Read only Memory (Erasable Programmable Read- Only Memory, EPROM), card, stick or Keyed actuator etc.).It is used in addition, various storage media described herein can represent Store one or more equipment of information and/or other machine readable medias.Term " machine readable media " may include but unlimited In the various media that can be stored, include and/or carry instruction and/or data.

Fig. 2 is the schematic flow chart according to a kind of method 200 of wireless communication of the embodiment of the present application.As shown in Fig. 2, This method 200 includes the following contents.

S210, AMF determine the AMF information in the context for needing to change the first signaling connection interface in the first RAN.

It should be understood that the AMF can serve the UE under multiple RAN simultaneously.First RAN is one in multiple RAN.

It should also be understood that the first signaling connection interface is the interface between the first RAN and AMF, can be as shown in Figure 1 N2 interfaces.

Optionally, when AMF needs to move out some or all of UE, AMF changes the first signaling connection interface in RAN AMF information in context.

For example, AMF sends request message to RAN, notice RAN changes the AMF in the context of the first signaling connection interface Information.

In another example RAN can delete the context of the first signaling connection interface for some or all of UE for needing to move out AMF information in (stable state), at this point, the UE that these needs are moved out can be the UE in connected state, can also be in the free time The UE of state.

For another example after AMF (source AMF) is some or all of UE distribution target AMF for needing to move out, RAN can be with To need the AMF information updates in the context (stable state) of the first signaling connection interface of some or all of UE to move out is mesh The information of AMF is marked, at this point, the UE that these needs are moved out can be the UE in connected state.

Optionally, when AMF triggers load balancing flow, some or all of which can be serviced UE moves out, and stops Service is provided for these UE.

Optionally, the trigger condition of load balancing includes but not limited to：The dilatation capacity reducing of AMF increases or deletes AMF realities AMF loads are unbalanced caused by example, AMF failures, other reasons.

S220, the AMF send the first request message to the first RAN, and first request message is for asking the first RAN Delete for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or will be directed to this first AMF information updates in UE groups in the context of the first signaling connection interface of UE are the target for UE in the first UE groups The information of AMF, wherein UE in the first UE groups is to reside in the first RAN, and currently by parts serviced the AMF or complete Portion UE, the interface of the first signaling connection interface between the first RAN and the AMF, the AMF information are the mark of AMF, or The interface identifier of AMF or the interface transport layer information of AMF.

Optionally, the AMF by the information preservation of the UE contexts in the first UE groups in the database, such as it is unstructured In data storage network function (Unstructured Data Storage Network Function, UDSF).

It should be understood that the first RAN delete or newer first UE groups in UE the first signaling connection interface up and down AMF information preservations in text are inside the first RAN.

It should also be understood that at this point, the AMF only needs to send primary first request message, so that it may so that the first RAN is deleted For the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or the first UE groups will be directed to AMF information updates in the context of the first signaling connection interface of middle UE are for the target AMF of UE in the first UE groups Information.

Optionally, source AMF determines that all UE that waits moving out and reside in the first RAN are the first UE groups, and determines It, should by the first interface mark for the first signaling connection interface of each UE in the first UE groups of the first RAN distribution Down direction of the first interface mark in the first signaling connection interface identifies UE.Optionally, source AMF to this first RAN sends first request message, and first request message is for asking the first RAN to delete each UE in the first UE groups AMF information in the context of the first signaling connection interface.

Optionally, other UE in the first RAN that need not move out, source AMF can be determined and does not move out and resides in this All UE in first RAN are the 2nd UE groups, and determine and be directed to each UE in the 2nd UE groups by what the first RAN was distributed The first interface of the first signaling connection interface identifies, wherein the 2nd UE groups be reside under the first RAN remove this first Other UE outside UE groups.Optionally, source AMF sends first request message to the first RAN, which is used for Ask the first RAN delete each UE in the first UE groups (the first RAN can according in the 2nd UE groups each UE this One signaling connection interface first interface mark determine the first UE groups) the first signaling connection interface context in AMF information.

Therefore, source AMF can determine the first UE groups (all UE are all in connected state), and the first RAN is asked to delete first AMF information in UE groups in the context of the first signaling connection interface of each UE；Source AMF can also first determine the 2nd UE groups, First RAN determines the first UE groups (part UE is in connected state, and part UE is in Idle state), in turn, first according to the 2nd UE groups RAN deletes the AMF information in the context of the first signaling connection interface of each UE in the first UE groups.

It is possible to further avoid sending a request message to the first RAN for each UE in the first UE groups, into And reduce the signaling overheads generated because sending request message.

Optionally, when in the source, AMF determines the first UE groups, source AMF is that each UE is distributed respectively in the first UE groups Target AMF.Optionally, source AMF sends first request message to the first RAN, which includes being directed to The mark of the target AMF of each UE and first request message should for asking the first RAN that will be directed in first UE groups AMF information updates in first UE groups in the context of the first signaling connection interface of each UE are in the first UE groups The information of the target AMF of each UE.Optionally, source AMF is sent corresponding to the target AMF for each UE in the first UE groups The contextual information of UE.

Optionally, when in the source, AMF determines the first UE groups, source AMF sends first request to the first RAN and disappears Breath.

Optionally, above-mentioned steps S220 can not only be executed by source AMF, can also be executed by target AMF.For example, Target AMF determination is newly moved into, the AMF information in the context of the first signaling connection interface of UE does not update and reside in this All UE in one RAN are the first UE groups, and determine and be somebody's turn to do for each UE in the first UE groups by what the first RAN distribute The first interface of first signaling connection interface identifies.Optionally, target AMF sends first request message to the first RAN, First request message includes the information of target AMF and first request message should for asking the first RAN that will be directed to The information that AMF information updates in first UE groups in the context of the first signaling connection interface of each UE are target AMF.

Optionally, when target AMF determines the first UE groups, target AMF receives the first instruction from source AMF and disappears Breath, first instruction message include the first signaling connection interface of each UE in multiple UE first interface mark with it is multiple The cell information that each UE is currently resident in UE；Target AMF determines the first UE groups according to first instruction message.

Optionally, when target AMF determines the first UE groups, target AMF sends first request to the first RAN Message.

Therefore, when the AMF for providing service to reside in the UE in the first UE groups under the first RAN changes, source AMF can be with Instruction message directly is sent to target AMF, so that target AMF determines that the first UE groups and target AMF are asked to the first RAN transmissions Message is sought, the first RAN of request will be for the AMF information in the context of the first signaling connection interface of each UE in the first UE groups It is updated to the information of target AMF, it is thus possible to avoid sending primary request to the first RAN for each UE in the first UE groups Message reduces the signaling overheads generated because sending request message in turn.

Optionally, when in the source, AMF determines that the first UE groups or target AMF determine the first UE groups, first request Message includes the first interface for the first signaling connection interface of each UE in the first UE groups distributed by the first RAN Mark, the first interface are identified for the UE in identifying the first UE groups in the down direction of the first signaling connection interface；Or

S230, the first RAN receive the first request message from AMF.

It should be understood that there may be multiple RAN to receive first request message from the AMF simultaneously, the first RAN is that this is more One in a RAN.

First signaling that S240, the first RAN delete each UE in the first UE groups according to first request message connects AMF information in the context of connection interface, or by in the first UE groups the first signaling connection interface of each UE it is upper AMF information updates hereinafter are the information for the target AMF of each UE in the first UE groups.

Optionally, include being distributed by the first RAN for each UE in the first UE groups in first request message When the first interface mark of the first signaling connection interface, the first RAN is directed to according to this that first request message carries should The first interface mark of the first signaling connection interface of each UE in first UE groups, delete each UE in the first UE groups this AMF information in the context of one signaling connection interface.

Optionally, do not include the first signaling connection interface of each UE in the first UE groups in first request message First interface identifies, but when including the information of source AMF, and the first RAN is according to first signaling of source AMF information inquiries UE AMF information in the context of connecting interface, and the context of the first signaling connection interface of determining UE is believed with source AMF It is the first UE groups to cease the identical UE, and deletes the context of the first signaling connection interface of each UE in the first UE groups In AMF information.

Optionally, include being distributed by the first RAN for each UE in the first UE groups in first request message The first interface of the first signaling connection interface identifies, and in the first UE groups when the information of the target AMF of each UE, The first signaling connection interface that should be directed to each UE in the first UE groups that first RAN is carried according to first request message First interface mark, and for the information of the target AMF of each UE in the first UE groups, will be directed in the first UE groups often AMF information updates in the context of the first signaling connection interface of a UE are the target for each UE in the first UE groups The information of AMF.

S250, SMF receive the second request message from AMF, wherein second request message is for asking the SMF to delete needle To the AMF information in the context of the PDU sessions of each UE in the 3rd UE groups, or each UE in the 3rd UE groups will be directed to PDU sessions context in AMF information updates be information for the target AMF of each UE in the 3rd UE groups, this There is the PDU sessions serviced by SMF in the UE in three UE groups.

Optionally, it is the AMF that the UE in the 3rd UE groups, which can be the AMF information in SMF in the context of PDU sessions, All UE of information.

S260, the SMF delete the protocol Data Unit for each UE in the 3rd UE groups according to second request message AMF information in the context of PDU sessions, or will be in the context of the PDU sessions of each UE in the 3rd UE groups AMF information updates are the information for the target AMF of each UE in the 3rd UE groups.

Optionally, the mark of each UE and in the 3rd UE groups in second request message includes the 3rd UE groups When the information of the target AMF of each UE, the SMF is according to the mark of each UE in the 3rd UE groups and for every in the 3rd UE groups The information of the target AMF of a UE, will be for the AMF information updates in the context of the PDU sessions of each UE in the 3rd UE groups For the information for the target AMF of each UE in the 3rd UE groups.

Optionally, in the mark of each UE during second request message includes the 3rd UE groups, the SMF is according to the third The mark of each UE in UE groups deletes the information for the AMF in the context of the PDU sessions of each UE in the 3rd UE groups.

Therefore, in the method for the wireless communication of the embodiment of the present application, the UE in the 3rd UE groups for providing service for SMF When providing the AMF changes of service, AMF is deleted to SMF transmission request messages, request SMF or update is directed in the 3rd UE groups often AMF information in the context of the PDU sessions of a UE, it is thus possible to avoid sending to SMF for each UE in the 3rd UE groups Request message reduces the signaling overheads generated because sending request message in turn.

The method for introducing wireless communication provided by the embodiments of the present application with reference to flow chart (Fig. 3 and Fig. 4).

Fig. 3 shows the schematic flow chart of the method 300 of the wireless communication of the application one embodiment.

S301, source AMF trigger load balancing flow.

It should be understood that source AMF can provide service for multiple UE simultaneously.

It should also be understood that after triggering load balancing flow, some or all of source AMF can be serviced UE moves out, Stop providing service for these UE.

Optionally, the trigger condition of load balancing includes but not limited to：The dilatation capacity reducing of AMF increases or deletes AMF realities AMF load imbalances caused by example, AMF failures, other reasons.

S302, source AMF selection need the UE to move out, and the context of UE to be moved out is stored in UDSF.

Optionally, S303, source AMF are that the UE that these are moved out distinguishes selection target AMF.

Optionally, S304, if in S303, source AMF is that these UE to move out have selected target AMF respectively, source AMF The context of the UE to move out can also will be needed to be delivered separately to respective target AMF.

There may be two schemes to notify RAN modifications to be stored in the AMF instance identifications under RAN.Scheme one includes following Step 305 arrive step 309, scheme two includes following step 310 to step 314.It is carrying into execution a plan for the moment, the step of scheme two Suddenly can not execute, carry into execution a plan two when, the step of scheme one, can not execute.Separately below to scheme one and scheme two into Row description.

S305, source AMF treat the UE to move out according to the RAN that UE is resident and are sorted out, and reside in UE points under same RAN For a UE group.

Following steps are described for residing in the first UE groups under the first RAN.

Source AMF sends the first request message to the first RAN, and first request message is for asking the first RAN to delete Except for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or the first UE will be directed to AMF information updates in group in the context of the first signaling connection interface of UE are the target AMF for UE in the first UE groups Information, wherein UE in the first UE groups is some or all of to reside in the first RAN, and currently serviced by the AMF UE。

The interface of the first signaling connection interface between the first RAN and the AMF is should be understood that, for example, N2 interfaces.

It should also be understood that in step S305, the first signaling for UE in the first UE groups is deleted asking the first RAN When AMF information in the context of connecting interface, which can be that half release N2 signaling connection interface requests disappear Breath；AMF information in the first RAN of request is by for the first UE groups in the context of the first signaling connection interface of UE is more New is for when the information of the target AMF of UE, which can redirect AMF requests to disappear in the first UE groups Breath.

Optionally, the mark which is AMF either believe by the interface transport layer of the interface identifier of AMF or AMF Breath.

Optionally, it is the 2nd UE groups that AMF determinations in source, which do not move out and reside in all UE in the first RAN, and is determined It is identified by the first interface for the first signaling connection interface of each UE in the 2nd UE groups of the first RAN distribution, In, the 2nd UE groups are other UE in addition to the first UE groups resided under the first RAN.Optionally, source AMF to this One RAN sends first request message, and first request message is for asking the first RAN to delete each UE in the first UE groups (the first RAN can be determined according to the first interface mark of the first signaling connection interface of each UE in the 2nd UE groups should First UE groups) the first signaling connection interface context in AMF information.

Optionally, when in the source, AMF determines the first UE groups, source AMF is that each UE is distributed respectively in the first UE groups Target AMF.Optionally, source AMF sends first request message to the first RAN, which includes being directed to be somebody's turn to do In first UE groups the mark of the target AMF of each UE and first request message for ask the first RAN will be directed to this AMF information updates in one UE groups in the context of the first signaling connection interface of each UE are for every in the first UE groups The information of the target AMF of a UE.

Optionally, when in the source, AMF determines the first UE groups, which includes being distributed by the first RAN For in the first UE groups the first signaling connection interface of each UE first interface mark, the first interface mark for The down direction of the first signaling connection interface identifies UE；Or

First request message includes first signaling for each UE in the 2nd UE groups distributed by the first RAN The first interface of connecting interface identifies, and the 2nd UE groups are other UE in addition to the first UE groups resided under the first RAN, Down direction of the first interface mark in the first signaling connection interface identifies UE.

S306, the first RAN are deleted after source AMF receives first request message according to first request message AMF information in first UE groups in the context of the first signaling connection interface of each UE, or the first UE will be directed to AMF information updates in group in the context of the first signaling connection interface of each UE are for each UE in the first UE groups The information of target AMF.

Optionally, include each UE being directed in the 2nd UE groups distributed by the first RAN in first request message When the first interface mark of the first signaling connection interface, the first RAN should according to each UE's that should be directed in the 2nd UE groups The first interface of first signaling connection interface identifies, and determines the UE in the first UE groups；UE in determining the first UE groups it Afterwards, the first RAN deletes the AMF information in the context of the first signaling connection interface of each UE in the first UE groups.

S307, if in S303, source AMF is that these UE to move out have selected target AMF respectively, and in S308, are somebody's turn to do First RAN will be needle for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups After the information of the target AMF of each UE in the first UE groups, the target of the first RAN from each UE to the first UE groups AMF sends Redirection Request message.

Optionally, the first RAN, will be in the first UE groups according to the target AMF information of each UE in the first UE groups UE point is multiple UE groups, the UE target AMF information having the same in multiple UE groups in each UE groups.

It is to be described so that target AMF is the first UE groups of first object AMF as an example below.

Optionally, the first RAN sends Redirection Request message, the Redirection Request message packet to first object AMF The first interface mark for the first signaling connection interface of each UE in the first UE groups distributed by the first RAN is included, And the Redirection Request message is used to ask first object AMF distribution for the first letter of each UE in the first UE groups The second interface of connecting interface is enabled to identify.

It should be understood that Redirection Request message can redirect AMF request messages.

According to the Redirection Request message, the first object AMF distribution is each for this by S308, first object AMF The second interface of the first signaling connection interface of UE identifies.

Optionally, first object AMF can preserve first signaling connection for each UE in the first UE groups The first interface of interface identifies.

S309, first object AMF send the first response message to the first RAN, which includes needle The first interface of the first signaling connection interface of each UE is identified and should be connect for the first signaling connection of each UE The second interface mark of mouth.

It should be understood that first response message disappears for the response for the Redirection Request message sent in step S308 Breath.

Step 310 to step 314 is the content in scheme two.

S310, source AMF send the first instruction message to target AMF, which includes each in multiple UE The first interface mark of the first signaling connection interface of UE and the current cell informations being resident of each UE in multiple UE.

The interface of the first signaling connection interface between source AMF and the first RAN is should be understood that, for example, N2 interfaces.

In another example first interface mark can be：First RAN UE N2ID, first interface mark for this The down direction of one signaling connection interface identifies UE.

Optionally, which can be Redirection Request message.

It should be understood that first instruction message, which is used to indicate target AMF, determines the first UE groups, and determine the first UE groups it Afterwards, the first request message of 313 step of forwarding step.

Optionally, target AMF determines the first UE groups according to first instruction message.

It should be understood that at least one UE that target AMF will reside under the first RAN is determined as the first UE groups.

S311 is identical as step 308.

S312, target AMF send the first request message to the first RAN, first request message for ask this One RAN by for the AMF information updates in the context of the first signaling connection interface of UE in the first UE groups be for this The information of the target AMF of UE in one UE groups, wherein UE in the first UE groups is to reside in the first RAN, and currently by this Some or all of AMF services UE.

It should be understood that in step S312, which can redirect AMF request messages.

Optionally, target AMF determinations newly move into, the AMF information in the context of the first signaling connection interface of UE not more Newly and reside in all UE in the first RAN be the first UE groups, and determine by the first RAN distribute be directed to this first The first interface mark of the first signaling connection interface of each UE in UE groups.Optionally, target AMF is sent out to the first RAN First request message is given, which includes that the information of target AMF and first request message are used to ask First RAN will be for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups For the information of target AMF.

Optionally, when target AMF determines the first UE groups, which includes the information of target AMF, And the first interface mark for the first signaling connection interface of each UE in the first UE groups by the first RAN distribution Know.

S313, the first RAN are after target AMF receives first request message, according to first request message by needle It is for the first UE groups to the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups In each UE target AMF information.

S314, the first RAN disappear in the response for the Redirection Request message for receiving first object AMF transmissions After the first request message of breath or target AMF, by first signaling connection for each UE in the first UE groups The second interface mark of interface is stored in the context of the first signaling connection interface of corresponding UE.

S315, source AMF, which are determined, to be stopped providing service for the UE in the 3rd UE groups, and the UE in the 3rd UE groups exists by meeting Talk about the protocol Data Unit PDU sessions of management function SMF services.

S316, source AMF send the second request message to the SMF, and second request message is for asking the SMF to delete needle To the AMF information in the context of the protocol Data Unit PDU sessions of each UE in the 3rd UE groups, or the third will be directed to AMF information updates in UE groups in the context of the PDU sessions of each UE are the target AMF for each UE in the 3rd UE groups Information.

It should be understood that in step S316, the upper of the PDU sessions for each UE being directed in the 3rd UE groups is deleted in request SMF When AMF information hereinafter, which can be half release N11 signaling connection interface requests message；In request SMF To be for every in the 3rd UE groups for the AMF information updates in the context of the PDU sessions of each UE in the 3rd UE groups When the information of the target AMF of a UE, which can redirect AMF request messages.

Optionally, source AMF is that each UE in the 3rd UE groups distributes target AMF respectively.Optionally, source AMF to The SMF sends the second request message, which includes the mark of each UE and for the third in the 3rd UE groups The information of the target AMF of each UE in UE groups, second request message are each in the 3rd UE groups for asking the SMF that will be directed to AMF information updates in the context of the PDU sessions of UE are the information for the target AMF of each UE in the 3rd UE groups.

Optionally, source AMF be not the 3rd UE groups distribution target AMF when, source AMF to the SMF send this second Request message, second request message include the mark of each UE in the 3rd UE groups, and second request message is for asking this SMF deletes the information for the AMF in the context of the PDU sessions of each UE in the 3rd UE groups.

Optionally, source AMF be not the 3rd UE groups distribution target AMF when, source AMF to the SMF send this second Request message, second request message be used to ask the SMF delete in the 3rd UE groups the PDU sessions of each UE up and down The information of AMF in text, the UE in the 3rd UE groups are AMF information and source in the context of the PDU sessions of UE in the SMF The identical all UE of information of AMF.

It should be understood that in the embodiment of the present application, when executing step S316, not executing step S317 and S318, and holding When row step S317 and S318, step S316 is not executed.

S317, target AMF determine the 3rd UE groups.

Optionally, target AMF determines that it is the third newly to move into and exist by all UE of the SMF PDU sessions serviced UE groups.

S318, target AMF send the second request message to the SMF, which includes in the 2nd UE groups The information of the mark and target AMF of each UE, second request message are every in the 3rd UE groups for asking the SMF that will be directed to The information that AMF information updates in the context of the PDU sessions of a UE are target AMF.

It should be understood that in step S318, the PDU sessions of each UE is upper and lower in request SMF is by for the 3rd UE groups AMF information updates in text are in the 3rd UE groups when the information of the target AMF of each UE, which can be with It is to redirect AMF request messages.

S319, the SMF delete the protocol Data Unit for each UE in the 3rd UE groups according to second request message AMF information in the context of PDU sessions, or will be in the context of the PDU sessions of each UE in the 3rd UE groups AMF information updates are the information for the target AMF of each UE in the 3rd UE groups.

S320, if in S306, the first RAN deletes the first signaling connection interface of each UE in the first UE groups Context in AMF information when, when the first RAN receives non access stratum NAS message at the first UE, alternatively, at this When first RAN needs to send the N2 signaling messages for the first UE to core net, the first RAN inquires the context of the first UE Information, and according to query result, it is determined whether distributing target AMF for the first UE, wherein the first UE is in connected state, The NAS message includes the corresponding AMF marks of the first UE.

For example, the first RAN can inquire the contextual information of the first UE in the following way, determined in the first RAN Do not found from the context of the first UE the first UE corresponding AMF marks and/or by the AMF distribute for this first When the second interface mark of the first signaling connection interface of UE, the first RAN is that the first UE distributes target AMF.

In another example second interface mark can be：AMF UE N2ID, second interface mark is in first letter The up direction of connecting interface is enabled to identify UE.

S321, after distributing target AMF for the first UE, the first RAN sends the second instruction to target AMF and disappears Breath, second instruction message include the first interface mark of the first signaling connection interface of the first UE.

It is established for the first UE between the first RAN it should be understood that second instruction is used to indicate target AMF First signaling connection interface (N2 interfaces).

S322, the target AMF are after receiving the second instruction information, according to the first signaling connection interface of the first UE First interface mark the context of the first UE is obtained from UDSF.

S323 establishes the first signaling connection between the first RAN and target AMF for the first UE.

Therefore, in the method for the wireless communication of the embodiment of the present application, when carrying into execution a plan one and step S316, when When the AMF that the UE resided in the first UE groups under the first RAN provides service changes, source AMF sends request to the first RAN and disappears Breath, the first RAN of request is deleted or update is in the context of the first signaling connection interface of each UE in the first UE groups AMF information, it is thus possible to avoid in turn subtracting to a first RAN request message of transmission for each UE in the first UE groups Few signaling overheads generated because sending request message.

Further, when the AMF that the UE in the 3rd UE groups for providing service for SMF provides service changes, AMF is to SMF Request message is sent, request SMF is deleted or update is for the AMF in the context of the PDU sessions of each UE in the 3rd UE groups Information in turn, is reduced because sending it is thus possible to avoid sending a request message to SMF for each UE in the 3rd UE groups The signaling overheads that request message generates.

Therefore, in the method for the wireless communication of the embodiment of the present application, in two and the step S317 and S318 of carrying into execution a plan When, when the AMF for residing in the UE offer services in the first UE groups under the first RAN changes, target AMF is sent to the first RAN Request message, the first RAN of request will believe for the AMF in the context of the first signaling connection interface of each UE in the first UE groups Breath is updated to the information for the target AMF of each UE in the first UE groups, it is thus possible to avoid for each UE in the first UE groups A request message all is sent to the first RAN, in turn, reduces the signaling overheads generated because sending request message.

Further, when the UE in the 3rd UE groups for providing service for SMF provide service AMF change when, target AMF to SMF sends request message, and request SMF will be for the AMF information updates in the context of the PDU sessions of each UE in the 3rd UE groups For the information for the target AMF of each UE in the 3rd UE groups, it is thus possible to avoid for each UE in the 3rd UE groups to SMF sends a request message, in turn, reduces the signaling overheads generated because sending request message.

Fig. 4 shows the schematic flow chart of the method 400 of the wireless communication of the application one embodiment.

S401, source AMF trigger load balancing flow.

S402, source AMF selection need the UE to move out, and the context of UE to be moved out is stored in UDSF.

Sorted out it should be understood that source AMF treats the UE to move out according to the RAN that UE is resident, is resided under same RAN UE points are a UE group.

Optionally, at this point, source AMF can notify RAN modifications to be stored in the AMF instance identifications under RAN.

S403, source AMF to the first RAN send the first request message, first request message for ask this first RAN deletes the AMF information in the context of the first signaling connection interface of each UE in the first UE groups.

It should be understood that the interface of the first signaling connection interface between the first RAN and source AMF, such as N2 interfaces.

It should be understood that in step S403, which can be half release N2 signaling connection interface requests message.

Optionally, which can also carry fault list, which includes being distributed by the first RAN The first interface mark for the first signaling connection interface of each UE in the 2nd UE groups, the 2nd UE groups is reside in Other UE in addition to the first UE groups under first RAN, the first interface are identified in the first signaling connection interface Down direction identifies UE.

S404, the first RAN are deleted after source AMF receives first request message according to first request message AMF information in first UE groups in the context of the first signaling connection interface of each UE.

S405, the first RAN send the first response message to source AMF.

It should be understood that first response message is the response message for the first request message sent in step S403.

It should also be understood that after having sent first response message, the first RAN will be in the first UE groups AMF information in the context of UE is updated to target AMF or the first RAN from source AMF will be in the first UE groups AMF information deletions in the context of UE.

S406, source AMF, which are determined, to be stopped for the UE in the 3rd UE groups providing service, the UE in the 3rd UE groups for currently by The AMF is serviced, and there is the PDU sessions serviced by SMF, in the context of the PDU sessions of each UE in the 3rd UE groups AMF information is identical as the information of the AMF.

S407, source AMF send the second request message to the SMF, and second request message is for asking the SMF that will be directed to AMF information deletions in the context of the PDU sessions of each UE in 3rd UE groups.

It should be understood that in step S 407, which can be that half release N11 signaling connection interface requests disappear Breath.

Optionally, source AMF sends second request message to the SMF, which includes the 3rd UE groups In each UE mark, which is used to ask the SMF to delete the PDU sessions for each UE in the 3rd UE groups Context in AMF information.

Optionally, source AMF sends second request message to the SMF, and second request message is for asking the SMF to delete Except the information for the AMF in the context of the PDU sessions of each UE in the 3rd UE groups, the UE in the 3rd UE groups is should AMF information all UEs identical with the information of source AMF in the context of the PDU sessions of UE in SMF.

S408, the SMF delete the protocol Data Unit PDU of each UE in the 3rd UE groups according to second request message AMF information in the context of session.

S409, the SMF send the second response message to source AMF.

It should be understood that second response message is the response message for step S407 the second request messages sent.

It should also be understood that after having sent second response message, which will be for the UE's in the 3rd UE groups AMF information in context is updated to target AMF from source AMF.

S410, when the first RAN receives NAS message at the first UE, alternatively, being needed to core in the first RAN When net sends the N2 signaling messages for the first UE, the first RAN inquires the contextual information of the first UE, and according to inquiry As a result, it is determined whether distribute target AMF for the first UE, wherein the first UE is in connected state, the NAS message include this The corresponding AMF marks of one UE.

For example, the first RAN can inquire the contextual information of the first UE in the following way, determined in the first RAN Do not found from the context of the first UE the first UE corresponding AMF marks and/or by the AMF distribute for this first When the second interface mark of the first signaling connection interface of UE, the first RAN is that the first UE distributes target AMF, this second connects Mouth mark in the up direction of the first signaling connection interface for identifying the first UE.

S411, after distributing target AMF for the first UE, the first RAN sends the first instruction to target AMF and disappears Breath, first instruction message are used to indicate target AMF and establish the first signaling between the first RAN for being directed to the 2nd UE Connection.

It is established for the first UE between the first RAN it should be understood that first instruction is used to indicate target AMF First signaling connection (N2 interfaces).

S412, target AMF inquire the contextual information of the first UE from UDSF.

S413 establishes the first signaling connection between the first RAN and target AMF for the first UE.

Therefore, in the method for the wireless communication of the embodiment of the present application, when to reside in the first UE groups under the first RAN UE provide service occur AMF change when, source AMF to the first RAN send request message, request the first RAN delete be directed to first AMF information in UE groups in the context of the first signaling connection interface of each UE, it is thus possible to avoid in the first UE groups Each UE sends a request message to the first RAN, in turn, reduces the signaling overheads generated because sending request message.

Further, when the UE in the 3rd UE groups for providing service for SMF provide service AMF change when, source AMF to SMF sends request message, and request SMF is deleted for the AMF information in the context of the PDU sessions of each UE in the 3rd UE groups, It is thus possible to avoid sending a request message to SMF for each UE in the 3rd UE groups, in turn, reduces and asked because sending The signaling overheads that message generates.

Fig. 5 shows a kind of schematic block diagram of computer equipment 500 provided by the embodiments of the present application.Specifically such as Fig. 5 institutes Show, the computer equipment 500 include at least one processor 502 (such as with calculate and processing capacity general processor

(CPU), digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field Programmable Gata Array, FPGA) etc.), processor 502 be used for each module in computer equipment 500 and device into Row management and scheduling.The computer equipment 500 further includes at least one transceiver 505 (receiver/transmitter), memory 506. The various components of computer equipment 500 are communicated by bus, transmit control and/or data-signal.

The method that above-mentioned the embodiment of the present application discloses can be applied to processor 502, or for executing in memory 506 The executable module of storage, such as computer program.Memory 506 may include high-speed random access memory (Random Access Memory, RAM), it is also possible to further include non-labile memory (non-volatile memory), memory can To include read-only memory and random access memory, and the signaling needed or data, program etc. are provided to processor.Storage The a part of of device can also include non-volatile row random access memory (NVRAM).It (can be with by least one transceiver 505 Wired or wireless) realize and at least one other network element between communication connection.

In the concrete realization, as a kind of embodiment, computer equipment 500 may include multiple processors, each to handle Device can be monokaryon (single-CPU) processor, can also be multinuclear (multi-CPU) processor.Here place Reason device can refer to one or more equipment, circuit, and/or the process cores for handling data (such as computer program instructions).

In the concrete realization, as a kind of embodiment, computer equipment 500 can also include transceiver 505.Transceiver 505 and processor 502 communicate, can show information in many ways.For example, transceiver 505 can be liquid crystal display (liquid crystal display, LCD), Light-Emitting Diode (light emitting diode, LED) shows equipment, cloudy Extreme ray pipe (cathode ray tube, CRT) shows equipment or projecting apparatus (projector) etc..Transceiver 505 and processing Device 502 communicates, and can receive the input of user in many ways.It is set for example, input equipment can be mouse, keyboard, touch screen Standby or sensing equipment etc..

Above-mentioned computer equipment 500 can be an a general purpose computing device either dedicated computing machine equipment. In the concrete realization, computer equipment 500 can be desktop computer, portable computer, network server, palm PC (Personal Digital Assistant, PDA), cell phone, tablet computer, wireless terminal device, communication equipment, insertion Formula equipment or the equipment for having similar structures in Fig. 5.The unlimited type for determining computer equipment 500 of the embodiment of the present application.

Fig. 6 shows a kind of possible structural schematic diagram of RAN involved in above-described embodiment.The RAN includes transmitting-receiving Device 610, controller/processor 620.The transceiver 610 can be used for supporting RAN and the UE (first being somebody's turn to do in above-described embodiment UE in UE groups, the UE in the 2nd UE groups, the UE in the 3rd UE groups, the first UE and the 2nd UE) and/or AMF (source AMF or mesh Mark AMF) between receive and send messages, support to carry out radio communication between the UE and other UE, and support the AMF and other AMF Between carry out radio communication.Controller/the processor 620 can be used for executing various be used for and UE, AMF and other networks The function of equipment communication.In uplink, the uplink signal from the UE is received via antenna, is carried out by transceiver 610 It reconciles, and is further handled by controller/processor 620 to restore transmitted by the UE to business datum and signaling information. On the uplink, business datum and signaling message are handled by controller/processor 620, and are adjusted by transceiver 610 Solution is transmitted to the UE to generate down link signal via antenna.Controller/the processor 620 is additionally operable to execute as above-mentioned The method of the wireless communication of embodiment description receives the first request message from AMF, and first request message is for asking the RAN It deletes for the AMF information in the context of the first signaling connection interface of each UE in first terminal equipment UE group, or will It is for the first UE for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups The information of the target AMF of each UE in group, wherein UE in the first UE groups is to reside in the part or all of UE of the RAN, this Interface of the one signaling connection interface between the RAN and the AMF；The RAN deletes the first UE groups according to first request message In each UE the first signaling connection interface context in AMF information, or each UE in the first UE groups will be directed to The first signaling connection interface context in AMF information updates be for the target AMF of each UE in the first UE groups Information.The RAN can also include memory 630, can be used for storing the program code and data of RAN.The RAN can also include Communication unit 640, for supporting RAN to be communicated with other network entities.For example, for supporting shown in RAN and Fig. 1 it He communicates between communicating network entities, such as AMF101 etc..

It is designed it is understood that Fig. 6 illustrate only simplifying for RAN.In practical applications, RAN can include arbitrary The transmitter of quantity, receiver, processor, controller, memory, communication unit etc., and all RAN that the application may be implemented All within the protection domain of the application.

The embodiment of the present application also provides a kind of computer storage media, which can store and be used to indicate The program instruction of any of the above-described kind of method.

Optionally, which is specifically as follows memory 630 shown in memory 506 or Fig. 6.

Illustratively, in the AMF in Fig. 2, Fig. 3 or Fig. 4, one or more software modules are stored in memory.AMF can To realize software module by the program code in processor and memory, wireless communication is realized.

Illustratively, the RAN in Fig. 2, Fig. 3 or Fig. 4 stores one or more software modules in memory.RAN can be with Software module is realized by the program code in processor and memory, realizes message transmission rate control.

Illustratively, the SMF in Fig. 2, Fig. 3 or Fig. 4 stores one or more software modules in memory.SMF can be with Software module is realized by the program code in processor and memory, realizes message transmission rate control.

Fig. 7 shows the schematic block diagram of the AMF 700 of the embodiment of the present application.As shown in fig. 7, the AMF 700 includes：

Processing module 710 needs to change the first signaling connection interface in the first wireless access network equipment RAN for determining Context in AMF information；

Sending module 720, for sending the first request message to the first RAN, first request message is for asking this First RAN is deleted for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or will be directed to AMF information updates in first UE groups in the context of the first signaling connection interface of UE are for UE in the first UE groups The information of target AMF, wherein the UE in the first UE groups is to reside in the first RAN, and the part currently serviced by the AMF Or whole UE, the interface of the first signaling connection interface between the first RAN and the AMF, the AMF information are the mark of AMF, The either interface transport layer information of the interface identifier of AMF or AMF.

Optionally, before the sending module 720 sends first request message to the first RAN,

The processing module 710 is additionally operable to determine that all UE for waiting moving out and residing in the first RAN are the first UE groups, And determine the first interface for the first signaling connection interface of each UE in the first UE groups distributed by the first RAN Mark, down direction of the first interface mark in the first signaling connection interface identify UE；Or

The processing module 710, be additionally operable to determine newly move into, AMF in the context of the first signaling connection interface of UE believes Breath does not update and resides in all UE in the first RAN as the first UE groups, and determination is directed to by what the first RAN was distributed The first interface mark of the first signaling connection interface of each UE in first UE groups.

Optionally, the sending module 720 is additionally operable to send first request message to the first RAN, which disappears Breath includes that the information of target AMF and first request message are used to ask the first RAN will be directed in the first UE groups often The information that AMF information updates in the context of the first signaling connection interface of a UE are target AMF；Or

The sending module 720 is additionally operable to send first request message to the first RAN, which is used for The first RAN is asked to delete for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or To be for the first UE groups for the AMF information updates in the context of the first signaling connection interface of UE in the first UE groups The information of the target AMF of middle UE.

Optionally, before the sending module 720 sends first request message to the first RAN, the processing module 710, it is additionally operable to distribute target AMF respectively for each UE in the first UE groups；

The sending module 720 is additionally operable to send first request message to the first RAN, which includes For the mark of the target AMF of each UE in the first UE groups and first request message for asking the first RAN by needle It is for the first UE to the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups The information of the target AMF of each UE in group.

Optionally, first request message include by the first RAN distribute in the first UE groups each UE should The first interface of first signaling connection interface identifies, which identifies in the downlink side of the first signaling connection interface UE into the first UE groups of mark.

Optionally, the processing module 710 is additionally operable to determine the 2nd UE groups, and the UE in the 2nd UE groups exists by session pipe Manage the protocol Data Unit PDU sessions of function SMF services；

The sending module 720 is additionally operable to send the second request message to the SMF, and second request message is for asking this SMF deletes the AMF information in the context for the PDU sessions of each UE in the 2nd UE groups, or will be directed to this second AMF information updates in UE groups in the context of the PDU sessions of each UE are the target AMF for each UE in the 2nd UE groups Information.

Optionally, the processing module 710 is additionally operable to determine the institute that waits moving out and exist by the SMF PDU sessions serviced It is the 2nd UE groups to have UE；Or

The processing module 710 is additionally operable to determine that it is to be somebody's turn to do newly to move into and exist by all UE of the SMF PDU sessions serviced 2nd UE groups.

Optionally, before the sending module 720 sends second request message to the SMF, the processing module 710, also For distributing target AMF respectively for each UE in the 2nd UE groups；

The sending module 720, be additionally operable to the SMF send the second request message, second request message include this second The mark of each UE and the information for the target AMF of each UE in the 2nd UE groups, second request message are used in UE groups Ask the SMF by for the AMF information updates in the context of the PDU sessions of each UE in the 2nd UE groups be for this second The information of the target AMF of each UE in UE groups.

Optionally, when the processing module 710 is not that the 2nd UE groups distribute target AMF, which also uses In sending second request message to the SMF, which includes the mark of each UE in the 2nd UE groups, this second Request message is used to ask the SMF to delete the letter for the AMF in the context of the PDU sessions of each UE in the 2nd UE groups Breath.

Optionally, the sending module 720 is additionally operable to send the second request message to the SMF, which includes The information of the mark and target AMF of each UE in 2nd UE groups, second request message should for asking the SMF that will be directed to The information that AMF information updates in 2nd UE groups in the context of the PDU sessions of each UE are target AMF.

The AMF 700 of the embodiment of the present application can correspond to the AMF of above-mentioned Fig. 2, Fig. 3 and embodiment of the method shown in Fig. 4.And Each module or unit in the AMF 700 are respectively used to execute and be held by AMF (source AMF or target AMF) in above method embodiment Capable corresponding flow (S210, S220, S250, S301-S307, S313-S316, S320, S401-S403, S406, S407, S412 And S413).For sake of simplicity, details are not described herein.

It should be understood that in the present embodiment, AMF 700 is presented in the form of function module.Here " module " can be with Refer to application-specific integrated circuit (application-specific integrated circuit, ASIC), circuit, execute one The processor and memory of a or multiple softwares or firmware program, integrated logic circuit and/or other above-mentioned function can be provided Device.In another embodiment, those skilled in the art is contemplated that form shown in fig. 5 may be used in AMF 700. Processing module 710 can be realized by processor 502 and memory 506 shown in fig. 5.Sending module 720 can pass through Transceiver 502 shown in fig. 5 is realized.Specifically, processor is realized by executing the computer program stored in memory.

Fig. 8 shows the schematic block diagram of the RAN 800 of the embodiment of the present application.As shown in figure 8, the RAN 800 includes：

Receiving module 810, for receiving the first request message from core net access and mobile management function to ps domain AMF, this One request message is used to ask the RAN to delete for the first signaling connection interface of each UE in first terminal equipment UE group AMF information hereinafter, or will be for the AMF in the context of the first signaling connection interface of each UE in the first UE groups Information update is the information for the target AMF of each UE in the first UE groups, wherein the UE in the first UE groups is to reside in The part or all of UE of the RAN, the interface of the first signaling connection interface between the RAN and the AMF；

Processing module 820, first signaling for deleting each UE in the first UE groups according to first request message AMF information in the context of connecting interface, or will be for the first signaling connection interface of each UE in the first UE groups AMF information updates in context are the information for the target AMF of each UE in the first UE groups.

Optionally, the processing module 820, be additionally operable to first request message include by the RAN distribute for this In one UE groups when the first interface mark of the first signaling connection interface of each UE, it is somebody's turn to do according to what first request message carried For the first interface mark of the first signaling connection interface of each UE in the first UE groups, each UE in the first UE groups is deleted The first signaling connection interface context in AMF information, the first interface identify for being connect in first signaling connection The down direction of mouth identifies UE；Or

The processing module 820 is additionally operable in first request message include being distributed by the RAN in the first UE groups The first interface mark of the first signaling connection interface of each UE, and for the target AMF of each UE in the first UE groups Information when, according to first request message carry should be for the first signaling connection interface of each UE in the first UE groups First interface mark, and for the information of the target AMF of each UE in the first UE groups, will be directed in the first UE groups often AMF information updates in the context of the first signaling connection interface of a UE are the target for each UE in the first UE groups The information of AMF；Or

The processing module 820, be additionally operable in first request message does not include the first UE groups each UE this first The first interface of signaling connection interface identifies, but when including the information of source AMF, according to source AMF information inquiries UE this The context of one signaling connection interface, and determine UE the first signaling connection interface context in AMF information with should AMF information identical UE in source is the first UE groups, and deletes the first signaling connection interface of each UE in the first UE groups Context in AMF information.

The RAN 800 of the embodiment of the present application can correspond to the RAN of above-mentioned Fig. 2, Fig. 3 and embodiment of the method shown in Fig. 4.And Each module or unit in the RAN 800 are respectively used to be executed by RAN (the first RAN) in execution above method embodiment corresponding Flow (S230, S240, S308, S309, S312, S320, S404, S405 and S411).For sake of simplicity, details are not described herein.

It should be understood that in the present embodiment, RAN 800 is presented in the form of function module.Here " module " can be with Refer to application-specific integrated circuit (application-specific integrated circuit, ASIC), circuit, execute one The processor and memory of a or multiple softwares or firmware program, integrated logic circuit and/or other above-mentioned function can be provided Device.In another embodiment, those skilled in the art is contemplated that form shown in fig. 6 may be used in RAN 800. Processing module 820 can be realized by controller/processor 620 and memory 630 shown in fig. 6.Receiving module 810 can To be realized by transceiver 610 shown in fig. 6.Specifically, processor is by executing the computer program stored in memory To realize.

Fig. 9 shows the schematic block diagram of the SMF 900 of the embodiment of the present application.As shown in figure 9, the SMF 900 includes：

Receiving module 910, for receiving the second request message from core net access and mobile management function to ps domain AMF, wherein The protocol Data Unit PDU sessions that second request message is used to that the SMF to be asked to delete each UE being directed in the 2nd UE groups AMF information in context, or by for the AMF information in the context of the PDU sessions of each UE in the 2nd UE groups more New is the information for the target AMF of each UE in the 2nd UE groups, and the UE in the 2nd UE groups exists by conversation management functional The PDU sessions of SMF services；

Processing module 920, for according to second request message, deleting the agreement number for each UE in the 2nd UE groups According to the AMF information in the context of unit PDU sessions, or by in the 2nd UE groups the PDU sessions of each UE up and down AMF information updates in text are the information for the target AMF of each UE in the 2nd UE groups.

Optionally, the processing module 920 is additionally operable to the mark of each UE in second request message includes the 2nd UE groups Know and in the 2nd UE groups when the information of the target AMF of each UE, according to the mark and needle of each UE in the 2nd UE groups It, will be for the context of the PDU sessions of each UE in the 2nd UE groups to the information of the target AMF of each UE in the 2nd UE groups In AMF information updates be for the target AMF of each UE in the 2nd UE groups information；Or

The processing module 920 is additionally operable in the mark of each UE during second request message includes the 2nd UE groups, root According to the mark of each UE in the 2nd UE groups, delete for the AMF in the context of the PDU sessions of each UE in the 2nd UE groups Information；Or

The processing module 920 is additionally operable to the mark of each UE in second request message does not include the 2nd UE groups, But when information including source AMF, according to the context of the PDU sessions of the information inquiry UE of source AMF, and determine UE's AMF information UE identical with the information of source AMF in the context of PDU sessions is the 2nd UE groups, and deletes to be directed to and be somebody's turn to do The information of AMF in 2nd UE groups in the context of the PDU sessions of each UE.

The SMF 900 of the embodiment of the present application can correspond to the SMF of above-mentioned Fig. 2, Fig. 3 and embodiment of the method shown in Fig. 4.And Each module or unit in the SMF 900 are respectively used to execute the corresponding flow executed by SMF in above method embodiment (S260, S317, S318, S408 and S409).For sake of simplicity, details are not described herein.

It should be understood that in the present embodiment, SMF 900 is presented in the form of function module.Here " module " can be with Refer to application-specific integrated circuit (application-specific integrated circuit, ASIC), circuit, execute one The processor and memory of a or multiple softwares or firmware program, integrated logic circuit and/or other above-mentioned function can be provided Device.In a simple embodiment, it is shown in fig. 5 to be contemplated that SMF 900 may be used by those skilled in the art Form.Processing module 920 can be realized by processor 502 and memory 506 shown in fig. 5.Receiving module 910 can be with It is realized by transceiver 502 shown in fig. 5.Specifically, processor by execute in memory the computer program that stores come It realizes.

Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit It closes or communicates to connect, can be electrical, machinery or other forms.

The unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme 's.

In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its arbitrary combination real It is existing.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, all or It partly generates according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, special meter Calculation machine, computer network or other programmable devices.The computer instruction can be stored in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state disk Solid State Disk (SSD)) etc..

The above, the only specific implementation mode of the application, but the protection domain of the application is not limited thereto, it is any Those familiar with the art can easily think of the change or the replacement in the technical scope that the application discloses, and should all contain It covers within the protection domain of the application.Therefore, the protection domain of the application should be based on the protection scope of the described claims.

Claims

1. a kind of method of wireless communication, which is characterized in that including：

Core net accesses and mobile management function to ps domain AMF determines the first letter needed to change in the first wireless access network equipment RAN Enable the AMF information in the context of connecting interface；

The AMF sends the first request message to the first RAN, and first request message is for asking the first RAN It deletes for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or will be directed to described AMF information updates in first UE groups in the context of the first signaling connection interface of UE are for UE in the first UE groups The information of target AMF, wherein the UE in the first UE groups is to reside in the first RAN, and currently serviced by the AMF Some or all of UE, interface of the first signaling connection interface between the first RAN and AMF, AMF letter The interface transport layer information for the mark either interface identifier of AMF or AMF that breath is AMF.

2. according to the method described in claim 1, being asked it is characterized in that, sending described first to the first RAN in the AMF Before seeking message, the method further includes：

Source AMF determines that it is the first UE groups to wait moving out and reside in all UE in the first RAN, and determines by described the The first interface mark for the first signaling connection interface of each UE in the first UE groups of one RAN distribution, it is described Down direction of the first interface mark in the first signaling connection interface identifies UE；Or

Target AMF determinations are newly moved into, the AMF information in the context of the first signaling connection interface of UE is not updated and resided in All UE in first RAN are the first UE groups, and determine and be directed in the first UE groups by what the first RAN was distributed The first interface mark of the first signaling connection interface of each UE.

3. method according to claim 1 or 2, which is characterized in that the AMF sends the first request to the first RAN Message, including：

Target AMF sends first request message to the first RAN, and first request message includes the target AMF Information and first request message for asking the first RAN will be for the institute of each UE in the first UE groups State the information that the AMF information updates in the context of the first signaling connection interface are the target AMF；Or

Source AMF sends first request message to the first RAN, and first request message is for asking described first RAN is deleted for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or will be directed to institute It is for UE in the first UE groups to state the AMF information updates in the context of the first signaling connection interface of UE in the first UE groups Target AMF information.

4. according to the method described in claim 3, it is characterized in that, sending described first to the first RAN in the source AMF Before request message, the method further includes：

The source AMF is that each UE distributes target AMF respectively in the first UE groups；

The source AMF sends the first request message to the first RAN, including：

The source AMF sends first request message to the first RAN, and first request message includes for described the The mark of the target AMF of each UE and first request message are for asking the first RAN that will be directed to institute in one UE groups It is for described first to state the AMF information updates in the first UE groups in the context of the first signaling connection interface of each UE The information of the target AMF of each UE in UE groups.

5. according to any method in Claims 1-4, which is characterized in that first request message includes by described The first interface mark for the first signaling connection interface of each UE in the first UE groups of first RAN distribution, institute First interface mark is stated for the UE in identifying the first UE groups in the down direction of the first signaling connection interface.

6. according to any method in claim 1 to 5, which is characterized in that the method further includes：

The source AMF or described targets AMF determines the 2nd UE groups, and the UE in the 2nd UE groups exists by conversation management functional The protocol Data Unit PDU sessions of SMF services；

The source AMF or described targets AMF sends the second request message to the SMF, and second request message is for asking The SMF deletes the AMF information in the context for the PDU sessions of each UE in the 2nd UE groups, or will be directed to AMF information updates in the 2nd UE groups in the context of the PDU sessions of each UE are for each in the 2nd UE groups The information of the target AMF of UE.

7. according to the method described in claim 6, it is characterized in that, the source AMF or described targets AMF determines the 2nd UE groups, Including：

The source AMF determines that it is the 2nd UE groups to wait moving out and exist by all UE of the SMF PDU sessions serviced；Or Person

The target AMF determines that it is the 2nd UE groups newly to move into and exist by all UE of the SMF PDU sessions serviced.

8. the method described according to claim 6 or 7, which is characterized in that send described second to the SMF in the source AMF Before request message, the method further includes：

The source AMF is that each UE in the 2nd UE groups distributes target AMF respectively；

The source AMF sends the second request message to the SMF, including：

The source AMF sends the second request message to the SMF, and second request message includes each in the 2nd UE groups The mark of UE and information for the target AMF of each UE in the 2nd UE groups, second request message is for asking institute It will be for described second for the AMF information updates in the context of the PDU sessions of each UE in the 2nd UE groups to state SMF The information of the target AMF of each UE in UE groups.

9. the method described according to claim 6 or 7, which is characterized in that do not distribute mesh for the 2nd UE groups in the source AMF When marking AMF, the source AMF sends the second request message to the SMF, including：

The source AMF sends second request message to the SMF, and second request message includes in the 2nd UE groups The mark of each UE, second request message are used to ask the SMF to delete the PDU for each UE in the 2nd UE groups The information of AMF in the context of session.

10. the method described according to claim 6 or 7, which is characterized in that the target AMF sends described second to the SMF Request message, including：

The target AMF sends the second request message to the SMF, and second request message includes every in the 2nd UE groups The mark of a UE and the information of the target AMF, second request message is for asking the SMF that will be directed to the 2nd UE The information that AMF information updates in group in the context of the PDU sessions of each UE are the target AMF.

11. a kind of method of wireless communication, which is characterized in that including：

Wireless access network equipment RAN is accessed from core net and mobile management function to ps domain AMF the first request messages of reception, and described first Request message is used to ask the RAN to delete for the first signaling connection interface of each UE in first terminal equipment UE group AMF information hereinafter, or will be in the context of the first signaling connection interface of each UE in the first UE groups AMF information updates are the information for the target AMF of each UE in the first UE groups, wherein the UE in the first UE groups To reside in the part or all of UE of the RAN, interface of the first signaling connection interface between the RAN and the AMF；

The RAN deletes the first signaling connection interface of each UE in the first UE groups according to first request message Context in AMF information, or will be for the context of the first signaling connection interface of each UE in the first UE groups In AMF information updates be for the target AMF of each UE in the first UE groups information.

12. according to the method for claim 11, which is characterized in that the RAN deletes institute according to first request message It states the AMF information in the context of the first signaling connection interface of each UE in the first UE groups, or described the will be directed to AMF information updates in one UE groups in the context of the first signaling connection interface of each UE are for every in the first UE groups The information of the target AMF of a UE, including：

Include first letter for being directed to each UE in the first UE groups distributed by the RAN in first request message When the first interface of connecting interface being enabled to identify, the RAN is directed to described first according to described in first request message carrying The first interface mark of the first signaling connection interface of each UE in UE groups deletes described the of each UE in the first UE groups AMF information in the context of one signaling connection interface, the first interface mark is in the first signaling connection interface Down direction identify UE；Or

Include first letter for being directed to each UE in the first UE groups distributed by the RAN in first request message The first interface of connecting interface is enabled to identify, and in the first UE groups when information of the target AMF of each UE, it is described RAN connects according to described in first request message carrying for first signaling connection of each UE in the first UE groups The first interface mark of mouth, and for the information of the target AMF of each UE in the first UE groups, the first UE will be directed to AMF information updates in group in the context of the first signaling connection interface of each UE are for each UE in the first UE groups Target AMF information；Or

Do not include the first of the first signaling connection interface of each UE in the first UE groups in first request message Interface identifier, but when including the information of the source AMF, the RAN is according to first signaling of the source AMF information inquiries UE AMF information in the context of connecting interface, and the context of the first signaling connection interface of determining UE and the source The identical UE of AMF information is the first UE groups, and first signaling for deleting each UE in the first UE groups connects AMF information in the context of connection interface.

13. a kind of method of wireless communication, which is characterized in that including：

Conversation management functional SMF receives the second request message from core net access and mobile management function to ps domain AMF, wherein described The protocol Data Unit PDU sessions that second request message is used to that the SMF to be asked to delete each UE being directed in the 2nd UE groups AMF information in context, or will be for the AMF information in the context of the PDU sessions of each UE in the 2nd UE groups It is updated to the information for the target AMF of each UE in the 2nd UE groups, the UE in the 2nd UE groups exists by session pipe Manage the PDU sessions of function SMF services；

The SMF deletes the protocol Data Unit PDU meetings for each UE in the 2nd UE groups according to second request message AMF information in the context of words, or will be for the AMF in the context of the PDU sessions of each UE in the 2nd UE groups Information update is the information for the target AMF of each UE in the 2nd UE groups.

14. according to the method for claim 13, which is characterized in that the SMF deletes needle according to second request message To the AMF information in the context of the protocol Data Unit PDU sessions of each UE in the 2nd UE groups, or described the will be directed to AMF information updates in two UE groups in the context of the PDU sessions of each UE are the mesh for each UE in the 2nd UE groups The information of AMF is marked, including：

The mark of each UE and for each in the 2nd UE groups in second request message includes the 2nd UE groups When the information of the target AMF of UE, the SMF is according to the mark of each UE in the 2nd UE groups and in the 2nd UE groups The information of the target AMF of each UE, will be for the AMF information in the context of the PDU sessions of each UE in the 2nd UE groups It is updated to the information for the target AMF of each UE in the 2nd UE groups；Or

In the mark of each UE during second request message includes the 2nd UE groups, the SMF is according to the 2nd UE The mark of each UE in group deletes the information for the AMF in the context of the PDU sessions of each UE in the 2nd UE groups； Or

The mark of each UE in second request message does not include the 2nd UE groups, but include the letter of the source AMF When breath, the SMF is according to the contexts of the PDU sessions of the information inquiry UE of the source AMF, and determines the PDU meetings of UE The AMF information UE identical with the information of source AMF in the context of words is the 2nd UE groups, and deletes and be directed to institute State the information of the AMF in the 2nd UE groups in the context of the PDU sessions of each UE.

15. a kind of core net access and mobile management function to ps domain AMF, which is characterized in that including：

Processing module needs to change the upper and lower of the first signaling connection interface in the first wireless access network equipment RAN for determination AMF information in text；

Sending module, for sending the first request message to the first RAN, first request message is for asking described the One RAN is deleted for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, or will be directed to AMF information updates in the first UE groups in the context of the first signaling connection interface of UE are in the first UE groups The information of the target AMF of UE, wherein UE in the first UE groups is to reside in the first RAN, and currently by the AMF Some or all of service UE, interface of the first signaling connection interface between the first RAN and AMF are described The interface transport layer information for the mark either interface identifier of AMF or AMF that AMF information is AMF.

16. AMF according to claim 15, which is characterized in that in the sending module to described in the first RAN transmissions Before first request message,

The processing module is additionally operable to determine that all UE for waiting moving out and residing in the first RAN are the first UE groups, with And determine be directed to the first signaling connection interface of each UE in the first UE groups first distributed by the first RAN Interface identifier, down direction of the first interface mark in the first signaling connection interface identify UE；Or

The processing module, be additionally operable to determine newly move into, the AMF information in the context of the first signaling connection interface of UE not more Newly and all UE in the first RAN are resided in as the first UE groups, and determine and be directed to institute by what the first RAN was distributed State the first interface mark of the first signaling connection interface of each UE in the first UE groups.

17. AMF according to claim 15 or 16, which is characterized in that

The sending module is additionally operable to send first request message to the first RAN, and first request message includes The information of the target AMF and first request message are for asking the first RAN that will be directed in the first UE groups The information that AMF information updates in the context of the first signaling connection interface of each UE are the target AMF；Or

The sending module is additionally operable to send first request message to the first RAN, and first request message is used for The first RAN is asked to delete for the AMF information in the context of the first signaling connection interface of UE in the first UE groups, Or will be for described for the AMF information updates in the context of the first signaling connection interface of UE in the first UE groups The information of the target AMF of UE in first UE groups.

18. AMF according to claim 17, which is characterized in that in the sending module to described in the first RAN transmissions Before first request message, the processing module is additionally operable to distribute target AMF respectively for each UE in the first UE groups；

The sending module is additionally operable to send first request message to the first RAN, and first request message includes For the mark of the target AMF of each UE in the first UE groups and first request message for asking described first RAN will be for the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups For the information of the target AMF of each UE in the first UE groups.

19. according to any AMF in claim 15 to 18, which is characterized in that first request message includes by institute The first interface mark for the first signaling connection interface of each UE in the first UE groups of the first RAN distribution is stated, The first interface mark is for the UE in identifying the first UE groups in the down direction of the first signaling connection interface.

20. according to any AMF in claim 15 to 19, which is characterized in that the processing module is additionally operable to determine the There is the protocol Data Unit PDU sessions serviced by conversation management functional SMF in two UE groups, the UE in the 2nd UE groups；

The sending module is additionally operable to send the second request message to the SMF, and second request message is described for asking SMF deletes the AMF information in the context for the PDU sessions of each UE in the 2nd UE groups, or will be directed to described AMF information updates in 2nd UE groups in the context of the PDU sessions of each UE are for each UE in the 2nd UE groups The information of target AMF.

21. AMF according to claim 20, which is characterized in that

The processing module is additionally operable to determine that it is described to wait moving out and exist all UE of the PDU sessions serviced by the SMF 2nd UE groups；Or

The processing module is additionally operable to determine that it is described newly to move into and exist all UE of the PDU sessions serviced by the SMF 2nd UE groups.

22. the AMF according to claim 20 or 21, which is characterized in that in the sending module to described in SMF transmissions Before second request message, the processing module is additionally operable to distribute target AMF respectively for each UE in the 2nd UE groups；

The sending module is additionally operable to send the second request message to the SMF, and second request message includes described second The mark of each UE and the information for the target AMF of each UE in the 2nd UE groups, second request message in UE groups To be needle for the AMF information updates in the context of the PDU sessions of each UE in the 2nd UE groups for asking the SMF To the information of the target AMF of each UE in the 2nd UE groups.

23. the AMF according to claim 20 or 21, which is characterized in that the processing module be not the 2nd UE groups When distributing target AMF, the sending module is additionally operable to send second request message to the SMF, and second request disappears Breath includes the mark of each UE in the 2nd UE groups, and second request message is for asking the SMF to delete for described The information of AMF in 2nd UE groups in the context of the PDU sessions of each UE.

24. the method according to claim 20 or 21, which is characterized in that the sending module is additionally operable to send out to the SMF It includes the mark of each UE and the target AMF in the 2nd UE groups to send the second request message, second request message Information, second request message be used to ask the SMF by in the 2nd UE groups PDU sessions of each UE it is upper and lower The information that AMF information updates in text are the target AMF.

25. a kind of wireless access network equipment RAN, which is characterized in that including：

Receiving module, for receiving the first request message, first request from core net access and mobile management function to ps domain AMF Message is used to ask the RAN to delete the context for the first signaling connection interface of each UE in first terminal equipment UE group In AMF information, or will in the context of the first signaling connection interface of each UE in the first UE groups AMF believe Breath is updated to the information for the target AMF of each UE in the first UE groups, wherein the UE in the first UE groups is resident In the part or all of UE of the RAN, interface of the first signaling connection interface between the RAN and the AMF；

Processing module, first signaling for deleting each UE in the first UE groups according to first request message connect AMF information in the context of connection interface, or will be for the first signaling connection interface of each UE in the first UE groups AMF information updates in context are the information for the target AMF of each UE in the first UE groups.

26. RAN according to claim 25, which is characterized in that

The processing module is additionally operable in first request message include being directed to the first UE groups by what the RAN was distributed In each UE the first signaling connection interface first interface mark when, carried according to first request message described in For the first interface mark of the first signaling connection interface of each UE in the first UE groups, delete every in the first UE groups AMF information in the context of the first signaling connection interface of a UE, the first interface mark is for described first The down direction of signaling connection interface identifies UE；Or

The processing module is additionally operable in first request message include being directed to the first UE groups by what the RAN was distributed In each UE the first signaling connection interface first interface mark, and for the mesh of each UE in the first UE groups When marking the information of AMF, according to first request message carry described in for described the of each UE in the first UE groups The first interface of one signaling connection interface identifies, and for the information of the target AMF of each UE in the first UE groups, by needle It is for described first to the AMF information updates in the context of the first signaling connection interface of each UE in the first UE groups The information of the target AMF of each UE in UE groups；Or

The processing module is additionally operable to not include described first of each UE in the first UE groups in first request message The first interface of signaling connection interface identifies, but when including the information of the source AMF, according to the source AMF information inquiries UE's AMF in the context of the first signaling connection interface, and the context of the first signaling connection interface of determining UE The information UE identical with the source AMF information is the first UE groups, and deletes the institute of each UE in the first UE groups State the AMF information in the context of the first signaling connection interface.

27. a kind of conversation management functional SMF, which is characterized in that including：

Receiving module, for receiving the second request message from core net access and mobile management function to ps domain AMF, wherein described the The protocol Data Unit PDU sessions that two request messages are used to that the SMF to be asked to delete each UE being directed in the 2nd UE groups AMF information hereinafter, or by for the AMF information in the context of the PDU sessions of each UE in the 2nd UE groups more New is the information for the target AMF of each UE in the 2nd UE groups, and the UE in the 2nd UE groups exists by session management The PDU sessions of function SMF services；

Processing module, for according to second request message, deleting the protocol data list for each UE in the 2nd UE groups AMF information in the context of first PDU sessions, or will be for the context of the PDU sessions of each UE in the 2nd UE groups In AMF information updates be for the target AMF of each UE in the 2nd UE groups information.

28. SMF according to claim 27, which is characterized in that

The processing module is additionally operable to the mark of each UE in second request message includes the 2nd UE groups and is directed to In the 2nd UE groups when information of the target AMF of each UE, according to the mark of each UE in the 2nd UE groups and it is directed to institute The information for stating the target AMF of each UE in the 2nd UE groups, will be for the context of the PDU sessions of each UE in the 2nd UE groups In AMF information updates be for the target AMF of each UE in the 2nd UE groups information；Or

The processing module is additionally operable in the mark of each UE during second request message includes the 2nd UE groups, root According to the mark of each UE in the 2nd UE groups, delete in the context of the PDU sessions of each UE in the 2nd UE groups AMF information；Or

The processing module is additionally operable to the mark of each UE in second request message does not include the 2nd UE groups, But when information including the source AMF, according to the context of the PDU sessions of the information inquiry UE of the source AMF, and UE is determined PDU sessions context in the AMF information UE identical with the information of source AMF be the 2nd UE groups, and delete Except the information for the AMF in the context of the PDU sessions of each UE in the 2nd UE groups.