CN109996303A - A kind of method and communication entity of system switching - Google Patents
A kind of method and communication entity of system switching Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
- H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
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Abstract
This application provides the methods and communication entity of a kind of switching of system, comprising: the ability information of PCF receiver terminal device；The PCF sends request message to NWDAF, the request message is for requesting EPC information according to the ability information of the terminal installation；Wherein, the EPC information is the information for the EPC that the terminal installation may access；The PCF receives the EPC information that the NWDAF is sent；The PCF is according at least to the EPC information, it is determined whether release PDU session.PCF is by being obtained ahead of time a possibility that UE is moved to each EPC, after UE is moved to specific position, a possibility that PCF can be moved to the EPC according to the UE got, judge whether to need to discharge the PDU session of UE, to guarantee that UE is synchronous with the PDU session status of EPC, TAU is executed when UE is moved to EPC not will fail, to save space interface signaling, reduce time delay of eating dishes without rice or wine.
Description
Technical field
This application involves the methods of one of wireless communication technology field more particularly to wireless communication system system switching
And communication entity.
Background technique
The intercommunication of 5G network and 4G network existing 3GPP (3rd Generation Partnership Project, the
Third generation partnership project) in standard, there are two types of intercommunication modes: single registration mode and double registration modes.In registration mode, when
When UE (ueser equipment, user equipment) supports single registration mode, network support and the intercommunication of N26 interface, for from
5GC (5th generation core, the 5th generation core net) arrives EPC (evolved packet core, the block core of evolution
Net) Idle state it is mobile, UE executes that (globally unique temporary identity, the whole world are uniquely faced from 5G-GUTI
When identify) mapping 4G-GUTI TAU (tracking area update, location area updating) process, if UE have establish
Packet Data Unit (Packet Data Unit, PDU) session, or if UE or EPC support " connectionless attachment ",
The MM (mobility management, mobile management) and SM (session management, session pipe of MME acquisition UE
Reason) context.If UE does not have PDU session registration in 5GC, UE or EPC do not support " connectionless attachment ", then UE executes attachment
Process.It is mobile for the connected state from 5GC to EPC, execute intersystem handover.It is mobile for the Idle state from EPC to 5GC, UE
Execute the registration process from the 4G-GUTI 5G-GUTI mapped, access and mobile management function to ps domain (Access and Mobility
Management function, AMF) entity and conversation management functional (Session Management function, SMF) be real
Body obtains MM the and SM context of UE from EPC.It is mobile for the connected state from EPC to 5GC, execute intersystem handover.
I.e. under single registration mode, when the UE in Idle state is moved to EPC from 5GC, UE and EPC support connectionless attached
, UE executes TAU；UE and EPC at least one when not supporting connectionless attachment, when UE perceives the PDU session for oneself having foundation,
TAU operation can be executed；Otherwise, attachment operation can be executed.In 5G, when UE being allowed to be in idle (free time) state, core net is implicit
PDU session is deactivated, the PDU session status of such UE and the PDU session status of core net are likely to be out of synchronization, i.e., UE perceives oneself
There is PDU session, but network side thinks do not have PDU session.The UE of Idle state is moved to EPC from 5GC, if perceiving oneself has PDU
Session can initiate TAU process.When not supporting connectionless attachment for UE or EPC, network side detects the PDU that UE is not established
The TAU of session, UE can be rejected, and UE will re-initiate attachment flow.The mode of such a trial and error increases the time delay eated dishes without rice or wine
And signaling.
Summary of the invention
This application provides a kind of system switching method, for UE from 5G network switching to EPC network when, guarantee UE with
The PDU session status of EPC is synchronous, and TAU is executed when UE is moved to EPC not will fail.
In a first aspect, the embodiment of the present application provides a kind of analysis method of system switching, the method is the first communication
The ability information of entity receiver terminal device；First communication entity is according to the ability information of the terminal installation, to second
Communication entity sends request message, and the request message is for requesting EPC information；Wherein, the EPC information is terminal dress
Set the information for the EPC that may be accessed；First communication entity receives the EPC information that second communication entity is sent；First
Communication entity is according at least to the EPC information, it is determined whether release PDU session.First communication entity is moved by the way that UE is obtained ahead of time
A possibility that moving each EPC, after UE is moved to specific position, the first communication entity can be moved to according to the UE got
A possibility that EPC, judges whether the PDU session for needing to discharge UE, thus guarantee that UE is synchronous with the PDU session status of EPC,
TAU is executed when UE is moved to EPC not will fail, to save space interface signaling, reduce time delay of eating dishes without rice or wine.
In a kind of possible design, the first communication entity is sent according at least to the EPC information, generation strategy information
The policy information gives third communication entity, and first communication entity receives the third communication entity and meeting policy information
When the PDU session of the terminal installation that is reported.
In alternatively possible design, the information that the first communication entity is reported according to fourth communication entity, described in update
Policy information.
In alternatively possible design, the first communication entity is according at least one in the EPC information and status information
Kind, it is determined whether discharge the PDU session.
In alternatively possible design, when the determination of the first communication entity does not discharge the PDU session, the first communication entity
It sends refuse information and gives third communication entity.
In alternatively possible design, first communication entity, which determines, discharges the PDU session, the user equipment
When in idle state, first communication entity pages the user apparatus.
Second aspect, the embodiment of the present application provide a kind of communication entity, can execute and realize what above-mentioned first aspect provided
Any one method.
In a kind of possible design, which, which has, realizes that the first communication is real in above-mentioned first aspect either method
The function of body behavior, the function can also execute corresponding software realization by hardware realization by hardware.It is described hard
Part or software include one or more than one module corresponding with above-mentioned function.Optionally, which can be AMF reality
Body, MME, session management entity, policy control entity or UE.
It include processor and transceiver in the structure of communication entity in a kind of possible design, the processor is matched
It is set to and communication entity is supported to execute corresponding function in above-mentioned first aspect either method, such as generate, receive or handle and is above-mentioned
Data and/or information involved in method.The transceiver is used to support communication between communication entity and other entities, to
Other entities send or receive information or instruction involved in above-mentioned first aspect either method from other entities.Communication is real
It can also include memory in body, the memory saves the necessary program instruction of communication entity for coupling with processor
And data.
The third aspect, the embodiment of the present application provide the method for another system switching, including communicating network entities receive
The mobile message of user apparatus, the mobile message are the information that the user apparatus moves between multiple EPC；The network
Entity determines a possibility that user apparatus may move each EPC according to the mobile message.NWDAF believes mobile
Cease it is for statistical analysis after the probability that obtains, the process resource of PCF can be saved, and improve the accuracy of PCF judgement.
Fourth aspect, the embodiment of the present application provide a kind of communication entity, can execute and realize what the above-mentioned third aspect provided
Any one determination method for parameter.
In a kind of possible design, which, which has, realizes that the first communication is real in above-mentioned first aspect either method
The function of body behavior, the function can also execute corresponding software realization by hardware realization by hardware.It is described hard
Part or software include one or more than one module corresponding with above-mentioned function.Optionally, which can be AMF reality
Body, MME, session management entity, policy control entity or UE.
It include processor and transceiver in the structure of communication entity in a kind of possible design, the processor is matched
It is set to and communication entity is supported to execute corresponding function in above-mentioned first aspect either method, such as generate, receive or handle and is above-mentioned
Data and/or information involved in method.The transceiver is used to support communication between communication entity and other entities, to
Other entities send or receive information or instruction involved in above-mentioned first aspect either method from other entities.Communication is real
It can also include memory in body, the memory saves the necessary program instruction of communication entity for coupling with processor
And data.
5th aspect, the embodiment of the present application provides a kind of computer storage medium, for being stored as above-mentioned second aspect
Computer software instructions used in the communication entity of offer, it includes for executing program designed by above-mentioned first aspect.
6th aspect, the embodiment of the present application provides a kind of computer storage medium, for being stored as above-mentioned fourth aspect
Computer software instructions used in the communication entity of offer, it includes for executing program designed by the above-mentioned third aspect.
7th aspect, present invention also provides a kind of computer program products comprising instruction, when it is transported on computers
When row, so that computer executes method described in above-mentioned first aspect, which includes computer executed instructions,
The computer executed instructions store in a computer-readable storage medium.The processor of communication entity can be deposited from computer-readable
Storage media reads the computer executed instructions；Processor executes the computer executed instructions, so that communication entity executes the application
The step of being executed in the above method that embodiment provides by communication entity, or make communication entity deployment corresponding with the step
Functional unit.
Eighth aspect, present invention also provides a kind of computer program products comprising instruction, when it is transported on computers
When row, so that computer executes method described in the above-mentioned third aspect, which includes computer executed instructions,
The computer executed instructions store in a computer-readable storage medium.The processor of communication entity can be deposited from computer-readable
Storage media reads the computer executed instructions；Processor executes the computer executed instructions, so that communication entity executes the application
The step of being executed in the above method that embodiment provides by communication entity, or make communication entity deployment corresponding with the step
Functional unit.
9th aspect, present invention also provides a kind of chip system, which includes processor, for supporting communication
Entity realizes function involved in above-mentioned various aspects, for example, generating, receiving or handling data involved in the above method
And/or information.In a kind of possible design, the chip system further includes memory, the memory, for saving terminal
The necessary program instruction of equipment and data.The chip system, can be made of chip, also may include chip and other deviding devices
Part.
Detailed description of the invention
The embodiment of the present application is described in more detail below with reference to shown attached drawing.
Fig. 1 is a kind of possible application scenarios schematic diagram provided by the present application；
Fig. 2 is the schematic diagram of the possible application environment of the another embodiment of the application；
Fig. 3 is the schematic diagram of the possible application environment of the another embodiment of the application；
Fig. 4 is the schematic diagram of the possible application environment of the another embodiment of the application；
Fig. 5 is a kind of method flow diagram provided by the embodiments of the present application；
Fig. 6 is the interaction schematic diagram of the communication means of another embodiment of the application；
Fig. 7 is the interaction schematic diagram of the communication means of another embodiment of the application；
Fig. 8 is the interaction schematic diagram of the communication means of the embodiment of the present application；
Fig. 9 is the interaction schematic diagram of the communication means of another embodiment of the application；
Figure 10 is the interaction schematic diagram of the communication means of the embodiment of the present application；
Figure 11 is the interaction schematic diagram of the communication means of another embodiment of the application；
Figure 12 is schematic device provided by the present application；
Figure 13 is another schematic device provided by the present application；
Figure 14 is communication entity schematic diagram provided by the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description.
The network architecture and business scenario of the embodiment of the present application description are to more clearly illustrate that the application is implemented
The technical solution of example, does not constitute the restriction to technical solution provided by the embodiments of the present application, those of ordinary skill in the art can
Know, with the differentiation of the network architecture and the appearance of new business scene, technical solution provided by the embodiments of the present application is for similar
Technical problem, it is equally applicable.
Terminal installation in the embodiment of the present application can refer to user equipment, access terminal, subscriber unit, subscriber station, movement
It stands, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless telecom equipment, user agent or user
Device.Terminal installation can also be cellular phone, wireless phone, session initiation protocol (Session Initiation
Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) stand, personal digital assistant
(Personal Digital Assistant, PDA), the handheld device with wireless communication function calculate equipment or are connected to
Other processing equipments of radio modem, mobile unit, wearable device, terminal installation in the following 5G network or not
Carry out the terminal installation etc. in the Public Land Mobile Network network (Public Land Mobile Network, PLMN) of evolution,
The embodiment of the present application does not limit this.
Base station in the embodiment of the present application can be the equipment for communicating with terminal installation, which can be global shifting
Dynamic communication (Global System of Mobile communication, GSM) system or CDMA (Code Division
Multiple Access, CDMA) in base station (Base Transceiver Station, BTS), be also possible to wideband code division
Base station (NodeB, NB) in multiple access (Wideband Code Division Multiple Access, WCDMA) system, may be used also
To be the evolved base station (Evolutional NodeB, eNB or eNodeB) in LTE system, cloud wireless access network can also be
Wireless controller etc. under network (Cloud Radio Access Network, CRAN) scene, the embodiment of the present application does not limit.
Network element in the embodiment of the present application may include the network equipment in 5G system architecture and/or 4G system architecture.Its
Middle 4G system architecture may include EPS system framework.For example, network element may include access and mobile management function to ps domain (Access
And Mobility Management function, AMF) entity, mobile management entity (Mobility Management
Entity, MME), conversation management functional (Session Management function, SMF) entity, uniform data management
(Unified Data Management, UDM), policy control functions (Policy Control Function, PCF) entity,
"Policy and Charging Rules Function (Policy and Charging Rule Function, PCRF) entity, packet data network
(Packet Data Network, PDN), Packet Data Unit (Packet Data Unit, PDU), control plane gateway (PDN
Gateway-Control plane, PGW-C), user plane gateway (PDN Gateway-User plane, PGW-U), ownership label
About client server (home Subscriber Server, HSS), Application Function (Application Function,
AF) etc..
The network architecture described herein and business scenario are the technical solutions in order to more clearly illustrate the application,
The restriction for technical solution provided by the present application is not constituted, those of ordinary skill in the art are it is found that with the network architecture
It develops and the appearance of new business scene, technical solution provided by the present application is equally applicable for similar technical problem.
As shown in Figure 1, be a kind of possible application scenarios schematic diagram of the application, including at least one terminal device 10,
It is communicated, the RAN by wireless interface and wireless access network (English: Radio access network, abbreviation: RAN)
Including at least one base station 20, a base station and a terminal device are only shown for clarity, in figure.Terminal device 10 may be used also
To be communicated with another terminal device 10, if equipment is to equipment (English: Device to Device, abbreviation: D2D) or machine
To the communication under machine (English: Machine to Machine, abbreviation: M2M) scene.It base station 20 can be logical with terminal device 10
Letter, can also be communicated with another base station 20, such as the communication between macro base station and access point.The RAN and core network (English
Text: core network, referred to as: CN) be connected.Optionally, the CN may be coupled to one or more data network (English
Text: Data Network, referred to as: DN), such as internet, public switch telephone network (English: public switched
Telephone network, referred to as: PSTN) etc..
In the application, noun " network " and " system " are often used alternatingly, but it will be appreciated by those skilled in the art that its
Meaning.
A little explanations are done to some nouns being related in the application below for ease of understanding.
1), terminal device (Terminal Equipment), also referred to as user equipment (English: User Equipment,
Referred to as: UE), or it is terminal (Terminal), is a kind of equipment for providing a user voice and/or data connectivity, for example,
Handheld device, mobile unit, wearable device, calculating equipment, control with wireless connecting function or wireless communication function
Equipment or the other processing equipments and various forms of mobile stations (English: Mobile for being connected to radio modem
Station, referred to as: MS) etc..Common terminal device includes: mobile phone (phone), tablet computer (pad), laptop
(notebook), palm PC, mobile internet device (English: mobile internet device, referred to as: MID), can wear
Wear equipment such as smartwatch, Intelligent bracelet, pedometer etc..For convenience of description, in the application, apparatus mentioned above is referred to as end
End equipment.
2), access network entity is divided into 5G access network entity and 4G access network entity, is a kind of terminal device to be linked into nothing
The equipment of gauze network, including but not limited to: evolved node B (English: evolved Node B, abbreviation: eNB), wireless network
Controller (English: radio network controller, abbreviation: RNC), node B (English: Node B, abbreviation: NB), base
Station control (English: Base Station Controller, abbreviation: BSC), base transceiver station (English: Base
Transceiver Station, referred to as: BTS), Home eNodeB (for example, Home evolved NodeB or Home Node B,
Referred to as: HNB), Base Band Unit (English: BaseBand Unit, referred to as: BBU), base station (English: g NodeB, referred to as: gNB),
Transfer point (English: Transmitting and receiving point, referred to as: TRP), launch point (English:
Transmitting point, referred to as: TP), mobile switching centre etc., in addition, it can include Wifi access point (English:
Access Point, referred to as: AP) etc., it can also include various forms of macro base stations, micro-base station, relay station, access point or radio frequency
Extension unit (English: Remote Radio Unit, referred to as: RRU) etc..In not homologous ray, has the equipment of base station functions
Title may be different, such as in the lte networks, the node B of referred to as evolution (evolved NodeB, eNB or
ENodeB), in the third generation (the 3rd Generation, 3G) network, referred to as node B (Node B) etc..
3), MME: being 3GPP agreement long term evolution (English: Long Term Evolution, abbreviation: LTE) access network
Key control node, it is responsible for the positioning of the UE of Idle state, notifies from a phone call process, including relaying, briefly MME is responsible for controlling
Plane signaling handles part.It is related to bearer activation/modification/deletion process, and when a UE is initialized and is connected to
When for this UE select a SGW entity.
4), AMF entity: AMF is responsible for access and mobile management, is the destination node of NG2 interface, terminated Non-Access Stratum
(English: Non-Access Stratum, referred to as: NAS) message, complete registration management, connection management and accessibility management with
And mobile management etc., and transparent route conversation manages message to conversation management functional (English: Session Management
Function, referred to as: SMF) entity.
5), SGW entity: being the important network element in evolution block core net (EPC), the function of SGW and effect and original 3G core
The user of Serving GPRS Support Node (English: Serving GPRS Support Node, abbreviation: SGSN) network element in heart net
Face is suitable.Also, SGW entity can be split as control plane SGW-C entity and user face SGW-U entity, SGW-C entity and PGW-
C entity and SGW-U entity have interface, and SGW-U entity and PGW-U entity have interface.
6), PGW entity: the PGW network element entity introduced in EPC system, it be similar to GPRS Support Node (English:
Gateway GPRS Support Node, referred to as: GGSN) network element function, be EPC network borde gateway, provide user's
Session management and carrying control, data forwarding, IP address distribution and non-3 gpp user access etc. functions, it be 3GPP access with
The anchor point of non-3 GPP access public data network PDN, PGW entity can be split as control plane PGW-C entity and user face PGW-U
Entity.
7), SMF entity: being responsible for the IP address distribution and management of session management, UE, the distribution of anchor point function and selection, simultaneously
And it is responsible for the (weight) selection etc. of UPF and user plane path.
8), PCF entity: major function is policy decision point, is provided based on business data flow and application detection, gate, QoS
It is regular with charging control based on stream etc., it is the policy control functions entity inside 5G system.
9): tactful and charging rule functions (English: Policy and Charging Rules Function, referred to as:
PCRF) entity: being the strategy and charging control policy decision point of business data flow and IP bearing resource, it holds for strategy with charging
Row functional entity selects and provides available strategy and charging control decision, and PCRF entity is the strategy and charging control function of 4G
Unit.
10), user plane functions (English: User Plane Function, abbreviation UPF) entity: for data packet by with
Transmission, user face QoS processing, uplink service verifying, the packet mark of transport layer, the caching of downlink data packet and downlink data packet
The user plane functions such as instruction, Lawful Interception.
11), user data management (English: Unified Data Managemen, abbreviation: UDM) entity: it is responsible for processing letter
Appoint shape, location management, signing management.Offer is linked into user data storage unit, supports access authentication, registration and mobility pipe
Reason etc..
12), home signature user server (English: Home Subscriber Server, abbreviation: HSS) entity: it is
It is used for the server of storing user subscription information in EPS, is mainly responsible for the subscription data of management user and the position of mobile subscriber
Information.
It makes explanations below to some generic concepts involved in the embodiment of the present application or definition, needs to illustrate
It is that some English abbreviations herein are the description carried out by taking LTE system as an example to the embodiment of the present application, it may be with network
Evolution change, specific evolution can be with reference to the description in respective standard.
In the application, 4G network is referred to as EPS network, and the access net of 4G network is known as E-UTRAN, the core of 4G network
Heart net is known as EPC network.Alternatively referred to as new wireless (English: New Radio, abbreviation: the NR) network of 5G network, 5G system are referred to as
5GS.Multiple nouns of same meaning will be used alternatingly in the application.
" data " described herein, refer to business datum under normal conditions, but also may include that system needs transmit
The contents such as signaling, message, for example, reference signal, uplink and downlink control message etc..
Term "and/or" in the application, only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds
Relationship, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, this
Character "/" in text typicallys represent the relationship that forward-backward correlation object is a kind of "or".
In the embodiment of the present application, illustrated with background that user apparatus switches in EPS system and 5G system.
Below in conjunction with Fig. 2 and Fig. 3, the application environment of the embodiment of the present application is introduced.Fig. 2 and 3 is the embodiment of the present application respectively
Possible system architecture schematic diagram.Wherein, Fig. 2 shows the intercommunications of 5G system and EPS system under non-roaming scene
Framework.Fig. 3 shows the intercommunication frame of 5G system and EPS system under local break-out (local breakout) roaming scence
Structure.
In Fig. 2 and framework shown in Fig. 3, in order to support the intercommunication of 5G system and EPS system, first interface is introduced.
Above-mentioned first interface refers to that the communication between the mobility management entity of 5G system and the mobility management entity of EPS system connects
Mouthful.Wherein, the mobility management entity of 5G system can be AMF, and the mobility management entity of EPS system can be MME.At this
Apply in embodiment, above-mentioned first interface can be indicated with N26 interface.It, should in the case where the system architecture supports N26 interface
Interworking architecture can be supported to switch between 5G and EPS system.It should be noted that in the interworking architecture, to the branch of N26 interface
It is optional for holding, and could guarantee the continuity of business using the process of switching only in the intercommunication network for supporting N26 interface.
It specifically, may include the net in the network element and 5G system in EPS system in Fig. 2 and framework shown in Fig. 3
Member.Certain module in framework contains the network element of EPS system and the function of the network element in 5G system.For example, HSS+UDM mould
Block, PCF+PDRF module, SMF+PGW-C module, UPF+PGW-U module, be introduced below module involved in framework 100-300 and
Communication interface.
UPF+PGW-U module: for the transfer management of user data, in interworking architecture, which can be used for the number of EPS
According to transmission, and the data-transformation facility of 5G can be provided.
SMF+PGW-C module: it is managed for the foundation of session, deletion and modification, in interworking architecture, which can be mentioned
The conversation management functional of EPS, and the conversation management functional of 5G can be provided.
PCF+PCRF module: for strategy and charging control entity, in interworking architecture, which can provide EPS for UE
Strategy and charging control, and the strategy and charging control of 5G can be provided.
HSS+UDM module: for storing the subscription data of user, in interworking architecture, which had both been stored with the EPS's of UE
Signing information, and it is stored with the signing information of the 5G of UE.
5G wireless access network (radio access network, RAN): providing radio open Access Core Network for UE,
To obtain corresponding business.
Application function: (Application Function, AF) interacts offer business or service with core net, supports
Access capability opens function, interacts with policy framework, provides application message etc..
Universal terrestrial access network (the evolved universal terrestrial radio access of evolution
Network, E-UTRAN): it is used for wireless resource management, interface-free resources are established, modified or deleted for UE.For UE provide data and
The transmission etc. of signaling.
AMF module: for the access and mobile management of user, main includes registration management, the accessibility management of user
Mobile management, paging management, access authentication and the encryption and the integrity protection etc. that authorize Non-Access Stratum signaling.
MME module: the mobile management for user.For example, mainly comprising the attachment management of user, accessibility management,
Mobile management, paging management, access authentication and the encryption and the integrity protection etc. that authorize Non-Access Stratum signaling.
SGW module: the gateway in user face, the user face destination node with E-UTRAN.It is moved as the local switched between base station
Dynamic anchor point.The routing and transmission for managing data packet, add packet label of transport layer etc..
S1-MME interface: the control plane interface between MME and E-UTRAN.
S1-U interface: the interface in the user plane between S-GW and E-UTRAN.
S5-U interface: the interface in the user plane between SGW and PGW-U is used for transmission the user face data of UE.
S5-C interface: the control plane management interface between SGW and PGW-U, for establishing SGW and PGW-U user face for UE
Connection.
S6a interface: the interface between MME and HSS, for obtaining the subscription data of user and executing certification and authorization for UE
Function.
S11 interface: the interface between SGW and MME, for establishing the carrying in user face.
N1 interface: the interface between UE and AMF, the signaling management of user's Non-Access Stratum and transmission.
N2 interface: the interface of (R) between AN and AMF, the transmission for signaling.
N3 interface: UPF and the direct interface of (R) AN are used for transmission the data of user.
N4 interface: the interface between SMF and UPF, for establishing the transmission channel in user face.
N7 interface: the interface between SMF and PCF, for policy control and charge information formulation and issue.
N8 interface: the interface between AMF and UDM, the mobility correlation signing information etc. for obtaining user.
N10 interface: the interface between SMF and UDM, the session management correlation signing information etc. for obtaining user.
N11 interface: the interface between SMF and AMF, the transmission etc. for session management information.
N15 interface: the interface between AMF and PCF accesses policy information relevant with mobility for obtaining.
In framework 300 shown in Fig. 3:
V-PCF+v-PCRF indicates the policy control body of roaming network or the support intercommunication in visited network, both supports to mention
For functions such as the strategy of 4G and charging controls, and the functions such as strategy and charging control for supporting to provide 5G.
V-SMF indicates the SMF in roaming network.
V-PCF indicates the PCF in roaming network.
In addition, the HPLMN in Fig. 3 indicates that local network, VPLMN indicate access network or roaming network.For example, HPLMN
It indicates (home) public land mobile network (public land mobile network, HPLMN), VPLMN indicates access
(visit) or roaming PLMN.Reference point or interface of the N24 between HPLMN and VPLMN.
It is understood that the above-mentioned function introduction to modules is only some for example, modules may be used also
With with other function, the embodiment of the present invention is not limited.
Fig. 4 is 5G policy control architecture, has network data analysis function in the relevant network architecture of policy control
(network data analytics function, NWDAF) network element, NWDAF can analyze big data, and can
Policy control network element (policy control function, PCF) into the network architecture sends the analysis obtained based on analysis
Information, the analysis information generation strategy that PCF can be sent based on NWDAF, and the strategy of generation can be sent to policy control
Network element is executed, for example, access or mobile management function to ps domain (the Access and Mobility Management in the network architecture
Function, AMF) or conversation management functional (Session Management Function, SMF) etc., policy control is held
Row network element can control the strategy and be carried out.
Below in conjunction with attached drawing, scheme provided by the embodiment of the present application is described in more detail.
It is determination method for parameter flow chart provided by the present application with reference to Fig. 5, is applied to UE from 5GS network switching to EPS
Network, comprising the following steps:
Step 501, the ability information of the first communication entity receiver terminal device；
Step 502, first communication entity is according to the ability information of the terminal installation, to the second communication entity
Request message is sent, the request message is for requesting EPC information；Wherein, the EPC information is that the terminal installation may connect
The information of the EPC entered；
Step 503, first communication entity receives the EPC information that second communication entity is sent；
Step 504, first communication entity is according at least to the EPC information, it is determined whether release PDU session.
In the embodiment shown in fig. 5, the first communication entity is by being obtained ahead of time a possibility that UE is moved to each EPC,
After UE is moved to specific position, a possibility that the first communication entity can be moved to the EPC according to the UE got, judgement is
The no PDU session for needing to discharge UE executes TAU when UE is moved to EPC to guarantee that UE is synchronous with the PDU session status of EPC
It not will fail, to save space interface signaling, reduce time delay of eating dishes without rice or wine.
It is a kind of embodiment provided by the present application, Fig. 7 and another embodiment shown in Fig. 8, wherein Fig. 7 is shown with reference to Fig. 6
Related procedure after UE initial registration, Fig. 8 show the related procedure after PDU session establishment process.Shown in Fig. 6 to Fig. 8
Embodiment in, the first communication entity be PCF, the second communication entity be NWDAF, third communication entity be IWK
(interworking, intercommunication) SMF.Further, in embodiment shown in fig. 5, fourth communication entity is AMF.It is below Fig. 6
To the detailed process of embodiment illustrated in fig. 9, comprising:
Step 1.UE is in the ability for reporting oneself, i.e. UE ability (UE capability) information.Optionally, UE can be
Capability reporting is carried out when PDU session establishment, can also carry out capability reporting in registration, illustrating mode shown in fig. 6 is in PDU
Capability reporting is carried out when session establishment to illustrate.It is to carry out ability in registration in schematic diagram 7 and embodiment shown in Fig. 9
On offer citing, and during PUD session establishment, IWK SMF is to PCF request strategy information；
UE can independent transmitting capacity information, can also in other message carrying capacity information, embodiment shown in Fig. 6
In, it can may include the ability information of the UE in session establishment request message, which is used to indicate whether UE supports nothing
Connection attachment.UE ability information is reported to PCF by IWK SMF, and optionally, IWK SMF by including in policy request message
The ability information of the UE, is sent to PCF.In the embodiment shown in fig. 7, include UE ability information in registration message, report
To AMF, AMF includes UE ability information by establishing/modifying message in UE context, is reported and submitted to PCF.IWK SMF is SMF+
PGW-C module, IWK SMF can be the SMF of support 4G and 5G system intercommunication.
UE ability information includes at least the information for indicating whether the UE supports connectionless attachment.
In the embodiment shown in fig. 6, optionally, PDU session is IWK PDU session, and UE is establishing IWK DNN (data
Network name, data network title) session when report oneself ability.IWK PDU session is both supports that UE is established
IWK, with the session of the DNN for the APN and 5G system for supporting EPS system simultaneously.UE, which has, judges whether the session is IWK PDU meeting
The ability of words.
Step 2.PCF subscribes to different services to NWDAF according to the ability information of UE, can refer to NWDAF subscription service
To NWDAF solicited message.
When the ability information of the UE indicates that the UE does not support the UE of connectionless attachment, PCF that can be moved to NWDAF request UE
The location information of TAU is initiated when all EPC；
When the ability information of the UE indicates that the UE supports the UE of connectionless attachment, PCF that can be moved to not to NWDAF request UE
Support the location information that TAU is initiated when connectionless attachment EPC.
PCF can not also consider the ability information of UE, and when all EPC that request UE can be moved to initiates the position letter of TAU
Breath.Signal resource is further saved when UE removes to request different location informations according to ability information compared to the program, is improved
To the analysis efficiency of requested location information.
PCF to the request message that NWDAF is sent may include UE parameter information, such as UE identification information；It may also include IWK
Error (mistake) information.Wherein the IWK error information is used to indicate PCF or AMF and is used to indicate intercommunication to NWDAF request
When there is mistake.
In addition, PCF subscribes to different services to NWDAF, ordered information can be the mobile message of UE, such as UE meeting
The location information of TAU or UE are initiated when being moved to all EPC can be moved to initiation TAU when not supporting connectionless attachment EPC
Location information optionally can be with AMF ID come indicating positions information；Ordered information is also possible to NWDAF and is moved according to UE
Corresponding at least one location information that the probability statistical analysis information or UE that dynamic information is done most possibly are moved to
AMF ID.PCF subscribes to different services to NWDAF, i.e. PCF to the requested EPC information of NWDAF, can for mobile message or
At least one of probability statistical analysis information.
The requested information of UE is sent to PCF by step 3.NWDAF.
NWDAF collects the mobile message of UE, mobile message can for the cell ID where UE perhaps AMF ID or
Geographical location information from third party application, mobility pattern (mobility pattern) etc., mobile message can be with
Including the one or more of the above content.Wherein AMF ID can be at least one location information institute that UE is most possibly moved to
Corresponding AMF ID.Mobility pattern is by AMF for characterizing and optimizing the ambulant concept of UE.Subscription of the AMF based on UE, UE
Mobility statistics, network local policy and UE auxiliary information or their any combination determine and update the mobile mould of UE
Formula.The ambulant statistics of UE can be history or expected UE motion track.AMF can be used UE mobility pattern and mention to optimize
The mobility support of UE is supplied, for example, registration area distributes.All mobile messages being collected into constitute big data, and NWDAF can
It is counted according to the big data, obtains the movement law of each UE, to show that UE is moved to one or more EPC and initiates
The probability of TAU.Further, UE can also further progress statistics, statistics available each UE is in special time period and/or specific position
When, it is moved to the probability that some specific EPC initiates TAU.NWDAF obtains big data probability after for statistical analysis, can be with
The process resource of PCF is saved, and improves the accuracy of PCF judgement.
Optionally, in the message that MWDAF is sent, it may also include IWK error information.The wherein IWK error information
It is used to indicate when PCF or AMF are used to indicate intercommunication to NWDAF request and mistake occurs.
Step 4.PCF generation strategy information, and policy information is sent to IWK SMF.The policy information is used to indicate IWK
SMF carries out reporting PDU session to PCF in the case where meeting policy information, whether discharges the PDU session by PCF decision.It should
Strategy indicated by policy information can be, and when UE reaches specific region, IWK SMF reports IWK PDU session.The plan
Slightly information can be a trigger, and when meeting trigger condition, IWK SMF reports PDU session.Optionally, as shown in Figure 9
In embodiment, PCF can first receive the strategy request information of IWK SMF transmission, retransmit the policy information.
Step 5.IWK SMF is in the case where meeting strategy indicated by policy information, if IWK SMF judgement needs to discharge
To IWK DNN PDU session when, IWK SMF is reported to PCF, request PCF judge whether to discharge.The PDU session can be
The last one PDU session of IWK DNN.Wherein, IWK DNN is while supporting the DNN of 4G and 5G system.
In addition, PCF can also update policy information, and the new policy information is sent to IWK SMF after step 4,
IWK SMF carries out judging whether to need to report according to the new policy information.
Optionally, PCF can receive the information that AMF is reported, Lai Gengxin policy information, and the information which reports includes UE
At least one in the information such as position, time；
Optionally, IWK SMF controls solicited message to PCF sending strategy, which may include the IWK
The SMF ID of SMF.PCF according to SMF ID judge its for IWK SMF, distributing policy immediately.
If step 6. PCF, can also be with further reference to status information, such as the time shape of UE according to the information obtained from NWDAF
State or location status etc., judgement do not discharge the PDU session, then send out message refusal IWK SMF.Conversely, then allowing the PDU session
Release.
PCF refuses the release of the PDU session, can notify IWK SMF refusal PDU session by way of sending message
Release.
Fig. 9 is the flow chart of another embodiment of the application, and shown in Fig. 9 is embodiment, and the first communication entity is PCF,
Second communication entity is NWDAF, and third communication entity is AMF.The process of embodiment shown in Fig. 9 includes:
Step 1, UE reports the ability of oneself, to carry out capability reporting PDU session establishment when UE is in registration in schematic diagram 9
Shi Jinhang capability reporting is illustrated；In another optional embodiment, UE carries out capability reporting in PDU session establishment.
UE can independent transmitting capacity information, can also in other message carrying capacity information.
Optionally, PDU session is IWK PDU session, and UE reports the ability of oneself establishing when the session of IWK DNN.IWK
PDU session is both support IWK that UE is established, with the session of the DNN for the APN and 5G system for supporting EPS system simultaneously.UE, which has, to be sentenced
Break the session whether be IWK PDU session ability.
UE ability information includes at least the information for indicating whether the UE supports connectionless attachment.
Step 2.PCF subscribes to different services to NWDAF according to the ability information of UE, can be to NWDAF subscription service
To NWDAF solicited message, comprising:
When the ability information of the UE indicates that the UE does not support the UE of connectionless attachment, PCF that can be moved to NWDAF request UE
The location information of TAU is initiated when all EPC；
When the ability information of the UE indicates that the UE supports the UE of connectionless attachment, PCF that can be moved to not to NWDAF request UE
Support the location information that TAU is initiated when connectionless attachment EPC.
PCF can not also consider the ability information of UE, and when all EPC that request UE can be moved to initiates the position letter of TAU
Breath.Signal resource is further saved when UE removes to request different location informations according to ability information compared to the program, is improved
To the analysis efficiency of requested location information.
PCF to the request message that NWDAF is sent may include UE parameter information, such as UE identification information；It may also include IWK
Error information.Wherein the IWK error information is used to indicate appearance when PCF or AMF are used to indicate intercommunication to NWDAF request
Mistake.
In addition, PCF subscribes to different services to NWDAF, ordered information can be the mobile message of UE, such as UE meeting
The location information of TAU or UE are initiated when being moved to all EPC can be moved to initiation TAU when not supporting connectionless attachment EPC
Location information optionally can be with AMF ID come indicating positions information；AMF ID can be UE and most possibly be moved at least
AMF ID corresponding to one location information.Ordered information is also possible to the probability that NWDAF is done according to UE mobile message
Statistically analyze information.PCF subscribes to different services to NWDAF, i.e. PCF can be movement to the requested EPC information of NWDAF
At least one of information or probability statistical analysis information.
The requested information of PCF is sent to PCF by step 3.NWDAF.
NWDAF collects the mobile message of UE, and mobile message can be the cell ID or AMF ID where UE, comes from
The geographical location information of third party application, mobility pattern (mobility pattern) etc., mobile message may include
The above content it is one or more.Wherein AMF ID can be corresponding at least one location information that UE is most possibly moved to
AMF ID.Mobility pattern is by AMF for characterizing and optimizing the ambulant concept of UE.Subscription of the AMF based on UE, UE are mobile
Property statistics, network local policy and UE auxiliary information or their any combination determine and update the Move Mode of UE.UE
Ambulant statistics can be history or expected UE motion track.AMF can be used UE mobility pattern and be supplied to optimize
The mobility support of UE, for example, registration area distributes.All mobile messages being collected into constitute big data, and NWDAF can basis
The big data is counted, and the movement law of each UE is obtained, to show that UE is moved to one or more EPC and initiates TAU's
Probability.Further, UE can also further progress statistics, statistics available each UE is mobile in special time period and/or specific position
The probability of TAU is initiated to some specific EPC.NWDAF obtains big data probability after for statistical analysis can save PCF
Process resource, and improve PCF judgement accuracy.
Optionally, in the message that MWDAF is sent, it may also include IWK error information.The wherein IWK error information
It is used to indicate when PCF or AMF are used to indicate intercommunication to NWDAF request and mistake occurs.
When in step 4, the AMF corresponding to the AMF ID transmitted by UE is moved to NWDAF, PCF can distributing paging triggering
Device, wherein including UE location information, when which is used to indicate the position that information is identified in the position UE, if AMF sentences
Disconnected PDU session discharges and UE is in Idle state, which is triggered.
Step 5. when UE designated position and be in idle state after, AMF determine the last one PDU session release after, paging
UE.Wherein the designated position is the position that the location information for including is given instruction in the trigger.
Step 6, AMF are by paging UE, and UE receives paging so that UE with EPC session status is synchronous, and UE is in movement
Attachment (attach) process is executed when to EPC.Through this embodiment, so that UE directly carries out attachment execution when being moved to EPC,
To reduce the time delay eated dishes without rice or wine.
Optionally, based in embodiment shown in Fig. 9, embodiment as shown in Figure 10 is that UE switches or be registered to one newly
AMF scene.In the case that PCF described in step 3 shown in Fig. 9 receives the information of NWDAF transmission, the UE passes through existing
There are registration or switching flow, access a new AMF, which sends UE context to PCF and establish request or UE context
Request message is modified, the AMF that PCF newly accesses UE sends paging trigger, when UE is in designated position and after be in idle state,
After AMF determines the last one PDU session release, UE is paged.Wherein the designated position is the position for including in the trigger
The position that information is given instruction.AMF is by paging UE, and UE receives paging so that UE with EPC session status is synchronous, and UE is being moved
Attachment flow is executed when moving EPC.Through this embodiment, so that UE directly carries out attachment execution when being moved to EPC, to subtract
The time delay eated dishes without rice or wine is lacked.
Figure 11 show another embodiment of the application, and the first communication entity is AMF, and the second communication entity is NWDAF, Figure 11
Shown in the process of embodiment include:
Step 1, UE reports the ability of oneself.UE carries out ability when can carry out capability reporting PDU session establishment in registration
It reports；In another optional embodiment, UE can also switch over process every time, when being accessed by different AMF, all
The AMF reporting ability information new to this.
UE can independent transmitting capacity information, can also in other message carrying capacity information.
Optionally, PDU session is IWK PDU session, and UE reports the ability of oneself establishing when the session of IWK DNN.IWK
PDU session is the session for the support IWK (interworking, intercommunication) that UE is established, and the session of the type is while supporting EPS system
The session of the DNN of the APN and 5G system of system.UE have judge the session whether be IWK PDU session ability.
UE ability information includes at least the information for indicating whether the UE supports connectionless attachment.
Step 2.AMF subscribes to different services to NWDAF according to the ability information of UE, can be to NWDAF subscription service
To NWDAF solicited message, comprising:
When the ability information of the UE indicates that the UE does not support the UE of connectionless attachment, PCF that can be moved to NWDAF request UE
The location information of TAU is initiated when all EPC；
When the ability information of the UE indicates that the UE supports the UE of connectionless attachment, PCF that can be moved to not to NWDAF request UE
Support the location information that TAU is initiated when connectionless attachment EPC.
PCF can not also consider the ability information of UE, and when all EPC that request UE can be moved to initiates the position letter of TAU
Breath.Signal resource is further saved when UE removes to request different location informations according to ability information compared to the program, is improved
To the analysis efficiency of requested location information.
AMF may also include UE parameter information, such as UE identification information, IWK error letter to the request message that NWDAF is sent
At least one of breath.Wherein the IWK error information be used to indicate PCF or AMF to NWDAF request be used to indicate intercommunication when
There is mistake.
In addition, AMF subscribes to different services to NWDAF, ordered content can be the mobile message of UE, such as UE meeting
The location information of TAU or UE are initiated when being moved to all EPC can be moved to initiation TAU when not supporting connectionless attachment EPC
Location information optionally can be with AMF ID come indicating positions information；Ordered information is also possible to NWDAF and is moved according to UE
The probability statistical analysis information that dynamic information is done.PCF subscribes to different services to NWDAF, i.e. PCF is to the requested EPC of NWDAF
Information can be at least one of mobile message or probability statistical analysis information.
The requested information of AMF is sent to AMF by step 3.NWDAF.
NWDAF collects the mobile message of UE, and mobile message can be the cell ID or AMF ID where UE, comes from
The geographical location information of third party application, mobility pattern (mobility pattern) etc., mobile message may include
The above content it is one or more.Wherein mobility pattern is by AMF for characterizing and optimizing the ambulant concept of UE.AMF base
In the subscription of UE, UE mobility statistics, network local policy and UE auxiliary information or their any combination are determined and more
The Move Mode of new UE.The ambulant statistics of UE can be history or expected UE motion track.UE mobility can be used in AMF
Mode is supplied to the mobility support of UE to optimize, for example, registration area distributes.All mobile messages being collected into constitute big
Data, NWDAF can be counted according to the big data, obtain the movement law of each UE, thus obtain UE be moved to one or
Multiple EPC initiate the probability of TAU.Further, UE can also further progress statistics, statistics available each UE special time period and/
Or when specific position, it is moved to the probability that some specific EPC initiates TAU.NWDAF obtains big data after for statistical analysis
Probability, can save the process resource of PCF, and improve the accuracy of PCF judgement.
Optionally, in the message that MWDAF is sent, it may also include IWK error information.The wherein IWK error information
It is used to indicate when PCF or AMF are used to indicate intercommunication to NWDAF request and mistake occurs.
Step 4. pages UE when UE is in Idle state after AMF determines the last one PDU session release.It is wherein described specified
Position is the position that the location information for including is given instruction in the trigger.
Step 5.AMF is by paging UE, and UE receives paging so that UE with EPC session status is synchronous, and UE is in movement
Attachment flow is executed when to EPC.Through this embodiment, so that UE directly carries out attachment execution when being moved to EPC, to reduce
The time delay eated dishes without rice or wine.
The communication means of the embodiment of the present application is described in detail above in association with Fig. 1 to Figure 11, is described below in conjunction with Figure 12
The network element of the embodiment of the present application.
Figure 12 is the schematic block diagram of the device 1200 of the embodiment of the present application.It should be understood that device 1200 is able to carry out Fig. 5 extremely
The each step executed in the method for Figure 11 by the first communication entity, in order to avoid repeating, and will not be described here in detail.Device 1200 wraps
It includes: processing unit 1201 and Transmit-Receive Unit 1202.
The Transmit-Receive Unit 1202 sends request to the second communication entity and disappears for the ability information of receiver terminal device
Breath, the request message is for requesting EPC information；Wherein, the EPC information is the EPC's that the terminal installation may access
Information；It is also used to receive the EPC information that second communication entity is sent；
The processing unit 1201, for according at least to the EPC information, it is determined whether release PDU session.
Figure 13 is the schematic block diagram of the device 1300 of the embodiment of the present application.It should be understood that device 1300 is able to carry out Fig. 5 extremely
The each step executed in the method for Figure 11 by the second communication entity, in order to avoid repeating, and will not be described here in detail.Device 1300 wraps
It includes: processing unit 1301 and Transmit-Receive Unit 1302.
The Transmit-Receive Unit 1302, for receiving the mobile message of user apparatus, the mobile message is user dress
Set the information moved between multiple EPC；
The processing unit 1301 determines that the user apparatus may move each EPC's according to the mobile message
Possibility.
The Transmit-Receive Unit 1302 is also used to the first requested information of communication entity transmitter.
In above-mentioned embodiment provided by the present application, respectively from each network element itself and between each network element interaction
Angle is described determination method for parameter provided by the embodiments of the present application.It is understood that each network element, such as eventually
In order to realize the above functions, it comprises executing, each function is corresponding for end equipment (such as UE), network equipment (such as base station) etc.
Hardware configuration and/or software module.Those skilled in the art should be readily appreciated that, in conjunction with implementation disclosed herein
Each exemplary unit and algorithm steps of example description, the application can be come with the combining form of hardware or hardware and computer software
It realizes.Some function is executed in a manner of hardware or computer software driving hardware actually, spy depending on technical solution
Fixed application and design constraint.Professional technician can retouch each specific application using distinct methods to realize
The function of stating, but this realization is it is not considered that exceed scope of the present application.
Based on identical inventive concept, the embodiment of the present application also provides a kind of communication entity 1400, and as shown in figure 11, this is logical
Reliable body 1400 includes at least processor 1401 and memory 1402, can also include further transceiver 1403, and may be used also
To include bus 1404.
The processor 1401, the memory 1402 and the transceiver 1403 are connected by bus 1404；
The memory 1402, for storing computer executed instructions；
The processor 1401, the computer executed instructions stored for executing the memory 1402；
When the communication entity 1400 is the first communication entity in above-described embodiment, the processor 1401 executes described
Memory 1402 store computer executed instructions so that the communication entity 1400 execute it is provided by the embodiments of the present application above-mentioned
The step of being executed in any embodiment by the first communication entity, or communication entity is made to dispose function list corresponding with the step
Member.
When the communication entity 1400 is the second communication entity in above-described embodiment, the processor 1401 executes described
Memory 1402 store computer executed instructions so that the communication entity 1400 execute it is provided by the embodiments of the present application above-mentioned
The step of being executed in any embodiment by third communication entity, or communication entity is made to dispose function list corresponding with the step
Member.
Processor 1401 may include different types of processor 1401, or the processor 1401 including same type；
Processor 1401 can be below any: central processing unit (English: Central Processing Unit, referred to as:
CPU), arm processor (full name in English of AMR are as follows: the full name in English of Advanced RISC Machines, RISC are as follows:
Reduced Instruction Set Computing, translator of Chinese are as follows: reduced instruction set computer :), field programmable gate array (English
Text: Field Programmable Gate Array, referred to as: FPGA), the device with calculation processing ability such as application specific processor
Part.A kind of optional embodiment, the processor 1401 can integrate as many-core processor.
Memory 1402 can be below any or any combination: random access memory (English: Random
Access Memory, referred to as: RAM), read-only memory (English: read only memory, referred to as: ROM), non-volatile deposit
Reservoir (English: non-volatile memory, abbreviation: NVM), solid state hard disk (English: Solid State Drives, letter
Claim: SSD), mechanical hard disk, disk, the storage mediums such as disk permutation.
The bus 1404 may include address bus, data/address bus, control bus etc., for convenient for indicating, Figure 14 is with one
Thick line indicates the bus.Bus 1404 can be below any or any combination: industry standard architecture (English:
Industry Standard Architecture, referred to as: ISA) bus, peripheral component interconnection (English: Peripheral
Component Interconnect, referred to as: PCI) bus, expanding the industrial standard structure (English: Extended Industry
Standard Architecture, referred to as: the EISA) device of the wired data transfers such as bus.
The embodiment of the present application provides a kind of computer readable storage medium, and calculating is stored in computer readable storage medium
Machine executes instruction；The processor of terminal device executes the computer executed instructions, so that communication entity execution is provided by the present application
The step of being executed in the determination method of above-mentioned parameter by the first communication entity, or make communication entity deployment corresponding with the step
Functional unit.
The embodiment of the present application provides a kind of computer readable storage medium, and calculating is stored in computer readable storage medium
Machine executes instruction；The processor of communication entity executes the computer executed instructions, so that communication entity execution is provided by the present application
The step of being executed in the determination method of above-mentioned parameter by third communication entity, or make communication entity deployment corresponding with the step
Functional unit.
The embodiment of the present application provides a kind of computer program product, which includes that computer execution refers to
It enables, which stores in a computer-readable storage medium.The processor of communication entity can from computer
It reads storage medium and reads the computer executed instructions；Processor executes the computer executed instructions, so that terminal device executes sheet
The step of being executed in the above method of embodiment offer by the first communication entity, is provided, or makes communication entity deployment and the step
Rapid corresponding functional unit.
The embodiment of the present application provides a kind of computer program product, which includes that computer execution refers to
It enables, which stores in a computer-readable storage medium.The processor of communication entity can from computer
It reads storage medium and reads the computer executed instructions；Processor executes the computer executed instructions, so that communication entity executes sheet
The step of being executed in the above method of embodiment offer by third communication entity, is provided, or makes communication entity deployment and the step
Rapid corresponding functional unit.
Present invention also provides a kind of chip systems, which includes processor, for supporting communication entity to realize
Function involved in above-mentioned various aspects, for example, generating, receiving or handle data involved in above-mentioned each method and/or letter
Breath.In a kind of possible design, the chip system further includes memory, and the memory can be used for saving terminal device
Necessary program instruction and data.The chip system, can be and be made of chip, be also possible to comprising chip and other deviding devices
Part.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof 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 process described herein or function.The computer can be general purpose computer, special purpose computer, meter
Calculation machine network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or
It is transmitted from a computer readable storage medium to another computer readable storage medium, for example, the computer instruction can
It is wired (for example, coaxial cable, optical fiber, digital subscriber to pass through from a web-site, computer, server or data center
Line (English: Digital Subscriber Ling, referred to as: DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to
Another web-site, computer, server or data center are transmitted.The computer readable storage medium can be meter
Any usable medium that calculation machine can store either includes the numbers such as a multiple usable mediums integrated server, data center
According to storage equipment.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or
Person's semiconductor medium (for example, solid state hard disk (English: Solid State Disk, referred to as: SSD)) etc..
Those skilled in the art will also be appreciated that the various illustrative components, blocks (illustrative that the application lists
Logical block) and step (step) can by electronic hardware, computer software, or both combination realized.In this way
Function be that the design requirement for depending on specific application and whole system is realized by hardware or software.Art technology
Personnel can be used various methods and realize the function, but this realization should not be managed for every kind of specific application
Solution is the range protected beyond the application.
Various illustrative logic units described herein and circuit can pass through general processor, digital signal
Processor, specific integrated circuit (English: application specific integrated circuit, referred to as: ASIC),
Field programmable gate array (English: Field-Programmable Gate Array, abbreviation: FPGA) or other may be programmed are patrolled
Device, discrete gate or transistor logic are collected, discrete hardware components or above-mentioned any combination of design come described by implementation or operation
Function.General processor can be microprocessor, optionally, the general processor may be any traditional processor,
Controller, microcontroller or state machine.Processor can also be realized by the combination of computing device, such as Digital Signal Processing
Device and microprocessor, multi-microprocessor, one or more microprocessors combine a digital signal processor core or it is any its
Its similar configuration is realized.
The software list that the step of method described herein or algorithm can be directly embedded into hardware, processor executes
The combination of member or the two.Software unit can store in random access memory (English: Random-Access
Memory, referred to as: RAM), flash memory, read-only memory (English: Read-Only Memory, referred to as: ROM), erasable programmable
It is read-only register (English: Erasable Programmable Read Only Memory, referred to as, EPROM), register, hard
Disk, moveable magnetic disc, CD-ROM (English: Compact Disc Read-Only Memory, abbreviation: CD-ROM) or ability
In domain in other any form of storaging mediums.Illustratively, storaging medium can be connect with processor, so that processor can
To read information from storaging medium, and can be to storaging medium stored and written information.Optionally, storaging medium can also integrate everywhere
It manages in device.Processor and storaging medium can be set in ASIC, and ASIC can be set in terminal device or the network equipment.It can
Selection of land, processor and storaging medium are also possible in the different components being set in terminal device or the network equipment.
In one or more exemplary designs, above-mentioned function described herein can be in hardware, software, firmware
Or any combination of this three is realized.If realized in software, these functions be can store on the medium with computer-readable,
Or it is transferred on a computer readable medium in the form of one or more instructions or code forms.Computer readable medium includes computer storage matchmaker
It is situated between and convenient for so that the telecommunication media for allowing computer program to be transferred to from a place other places.Storaging medium can be any logical
With or special computer can be with the useable medium of access.For example, such computer readable media can include but is not limited to
RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk storage or other magnetic storage devices or it is other it is any can be with
For carrying or storing to instruct or data structure and other can be read by general or special computer or general or special processor
The medium of the program code of form.In addition, any connection can be properly termed computer readable medium, for example, if
Software is to pass through a coaxial cable, optical fiber computer, twisted pair, number from a web-site, server or other remote resources
Word user line (DSL) can with computer defined in being also contained in of the wireless way for transmitting such as example infrared, wireless and microwave
It reads in medium.The disk (disk) and disk (disc) includes compress disk, radium-shine disk, CD, digital versatile disc (English
Text: Digital Versatile Disc, referred to as: DVD), floppy disk and Blu-ray Disc, disk usually with magnetic replicate data, and
Disk usually carries out optically replicated data with laser.Combinations of the above also may be embodied in computer readable medium.
Those skilled in the art are it will be appreciated that in said one or multiple examples, function described herein
It can be realized with hardware, software, firmware or their any combination.It when implemented in software, can be by these functions
Storage in computer-readable medium or as on computer-readable medium one or more instructions or code transmitted.
Computer-readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another
Any medium of one place transmission computer program.Storage medium can be general or specialized computer can access it is any
Usable medium.
Above-described specific embodiment has carried out further the purpose of the application, technical scheme and beneficial effects
It is described in detail, it should be understood that being not used to limit the application the foregoing is merely the specific embodiment of the application
Protection scope, all any modification, equivalent substitution, improvement and etc. on the basis of the technical solution of the application, done should all
Including within the scope of protection of this application.The foregoing description of present specification can make art technology is any can benefit
With or realize present context, any modification based on disclosure be all considered as this field it will be apparent that
Basic principle described herein can be applied in other deformations without departing from present invention spirit and scope.Cause
This, content disclosed in the present application is not limited solely to described embodiment and design, can be extended to and the application original
Then with the disclosed consistent maximum magnitude of new feature.
Claims (7)
1. a kind of analysis method of system switching, which is characterized in that the described method includes:
The ability information of first communication entity receiver terminal device；
First communication entity sends request to the second communication entity and disappears according to the ability information of the terminal installation
Breath, the request message are used to request the packet-based core networks EPC information of evolution；Wherein, the EPC information is the terminal installation
The information for the EPC that may be accessed；
First communication entity receives the EPC information that second communication entity is sent；
First communication entity is according at least to the EPC information, it is determined whether release Packet Data Unit PDU session.
2. according to the method described in claim 1, including:
First communication entity is according at least to the EPC information, generation strategy information；
First communication entity sends the policy information and gives third communication entity；
First communication entity receives the terminal installation that the third communication entity is reported when meeting policy information
The PDU session.
3. method according to claim 1 or 2, which is characterized in that first communication entity is according to fourth communication entity
The information reported updates the policy information.
4. method according to any one of claims 1 to 3, which is characterized in that first communication entity is believed according to the EPC
At least one of breath and status information, it is determined whether discharge the PDU session.
5. method according to any one of claims 1 to 4, which is characterized in that
First communication entity determines when not discharging the PDU session, and first communication entity sends refuse information to the
Three communication entities.
6. method according to any one of claims 1 to 4, which is characterized in that
First communication entity, which determines, discharges the PDU session, when the user equipment is in Idle state, first communication
Entity pages the user apparatus.
7. a kind of device, which is characterized in that described device requires 1 to 6 any system switching method for perform claim.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711487978.5A CN109996303B (en) | 2017-12-29 | 2017-12-29 | System switching method and communication entity |
| PCT/CN2018/124112 WO2019129115A1 (en) | 2017-12-29 | 2018-12-27 | System handover method and communication entity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711487978.5A CN109996303B (en) | 2017-12-29 | 2017-12-29 | System switching method and communication entity |
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| Publication Number | Publication Date |
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| CN109996303A true CN109996303A (en) | 2019-07-09 |
| CN109996303B CN109996303B (en) | 2021-06-01 |
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| WO (1) | WO2019129115A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2019129115A1 (en) | 2019-07-04 |
| CN109996303B (en) | 2021-06-01 |
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