CN108401269A - The switching method and apparatus of cross-system - Google Patents

The switching method and apparatus of cross-system Download PDF

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Publication number
CN108401269A
CN108401269A CN201710067393.1A CN201710067393A CN108401269A CN 108401269 A CN108401269 A CN 108401269A CN 201710067393 A CN201710067393 A CN 201710067393A CN 108401269 A CN108401269 A CN 108401269A
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China
Prior art keywords
modules
information
systems
amf
default
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CN201710067393.1A
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Chinese (zh)
Inventor
李振东
朱进国
梁爽
周晓云
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ZTE Corp
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ZTE Corp
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Priority to CN201710067393.1A priority Critical patent/CN108401269A/en
Priority to PCT/CN2018/082149 priority patent/WO2018145671A1/en
Publication of CN108401269A publication Critical patent/CN108401269A/en
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation

Abstract

The present invention provides a kind of switching method and apparatus of cross-system.Wherein, this method includes：Access and the first AMF modules of mobile management function to ps domain know that cross-system switching occurs for user equipment (UE), and cross-system switching refers to that UE switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system, and the first AMF modules are located in 5G systems；During UE switches to 4G systems from 5G systems, the target carrying information of the UE pre-saved is sent to mobile management nodes function MME modules by the first AMF modules, and the MME modules in 4G systems are used to according to the target carrying information received be that UE reserves resource in wireless side.It cannot be the technical issues of user equipment reserves resource since AMF cannot generate wireless side caused by session information when cross-system switches that the present invention, which solves in the related technology,.

Description

The switching method and apparatus of cross-system
Technical field
The present invention relates to the communications fields, in particular to a kind of switching method and apparatus of cross-system.
Background technology
3GPP (3rd Generation Partnership Project) formulated since R8 forth generation (or LTE, Long Term Evolution, long term evolution) mobile communication system.Its network architecture is as shown in Figure 1, each network element in framework Function is as follows：
Terminal (UE, User Equipment):4G networks are mainly accessed by radio open and are serviced, terminal passes through It eats dishes without rice or wine and the base stations eNB interactive information, passes through the mobility of Non-Access Stratum signaling NAS (non-Access Stratum) and core net Management entity interactive information.
Base station (RAN, Radio Access Network, eNB):Be responsible for accessing terminal to network interface-free resources scheduling and with And the connection management eated dishes without rice or wine.
Mobile management entity：Core network control surface entity is mainly responsible for the authentication to user, mandate and signing and checks, The maintenance of user mobility management, PDN connections and carrying, the functions such as triggering paging under user's IDLE state.
Gateway Serving GW：Core network user face functional entity is mainly responsible under roaming condition with PDN GW's Interaction.
Packet data gateway PDN GW：Core network user face functional entity is the access point of terminal access PDN networks, bears Distributing user IP address is blamed, the carrying of network-triggered is established, changes and deleted, and is also had the function of QoS control chargings etc., is user Anchor point in 3GPP system ensures business continuance to ensure that IP address is constant.In control and forward separating framework, P-GW is divided into as 2 parts, and one is controlled entity PGW-C, and one is user entity PGW-U.PGW-C is responsible for signaling control System, PGW-U are responsible for IP forwardings.
Home subscribed services device (HSS, Home Subscription Server)：Store the signing information of user.
Policy control and charging rule functions (PCRF, Policy and charging control function), bear Blame the formulation of strategic decision-making and charging regulation.PCRF provides the rule of the network-control based on business data flow, these network controls System includes the detection of business data flow, gates (Gating Control), service quality (Quality of Service, QoS) Control and the charging regulation etc. based on data flow.The strategy and charging regulation that PCRF is formulated are sent to P-GW execution.
3GPP begins one's study next-generation communication system (NextGen System) from R14, and next-generation communication system can prop up Hold eMBB (Evolved Mobile Broadband, the mobile broadband of evolution), mMTC (Massive Machine Type Communication, super large connect machine communication), uMTC (Ultra Reliable Machine Type Communication, the communication of super reliable machine) three kinds of types of service, these three types of service have different network characteristics.Figure 2 be next generation mobile communication network architecture schematic diagram, wherein the function of each network element is as follows：
Terminal (UE, User Equipment) mainly accesses network by next-generation radio open and is serviced, terminal By eating dishes without rice or wine and base station interactive information, pass through the public control plane function and session control face of Non-Access Stratum signaling and core net Function interactive information.
Next-generation base station (NG RAN, Radio Access Network, gNB) namely the base stations NR are responsible for terminal and access net The interface-free resources scheduling of network and and the connection management eated dishes without rice or wine.
Session control face function (SMF, Session Management Function)：Namely conversation management functional, and eventually End interaction is mainly responsible for processing user PDU (Packet Data Unit) session establishment, modification and removal request, selects UPF (User Plane function, user plane functions)；Establish the user plane connection between UE to UPF；With PCF (Policy Control Function) functions such as QoS (Quality of Service) parameter of session are determined together.
Access and mobility control function (AMF, Access and Mobility control Function)：Namely it connects Enter and mobile management function to ps domain, is the public control plane function in core net.One user only there are one AMF, be responsible for Authentication, mandate and the signing at family are checked to ensure that user is validated user；User mobility management, including location registration and face When mark distribution；When user, which initiates PDU (Packet Data Unit Packet Data Units), connects foundation request, choosing Select suitable SMF；Forward Non-Access Stratum (NAS, Non Access Stratum) signaling between UE and SMF；Repeating base station and Access layer AS (Access Stratum) signaling between SMF.Between UE and AMCF, is sent by N1 interfaces, receives NAS and disappear Breath.AMCF passes through N2 interfaces, and next generation's base station NG RAN interactions.
User plane functions (UPF, User Plane Function)：Offer user plane processing function, including data forwarding, QoS is executed.UPF also provides user plane anchor point when user's movement, ensures business continuance.User plane functions UPF and a generation Between the NG RAN of base station, the media face data of UE is sent, received by N3 interfaces.SMF passes through N4 Interface Controllers UPF.
Policy control functions (PCF, Policy Control Function)：The QoS rule of user are provided to offer SMF (the relevant rule of service quality).
Subscription data management function (SDM, Subscription Data management)：Store the signing number of user According to similar with the HSS in 4G epoch.
The deployment of NextGen System (5G), starting can be in hot zones partial deployment, such as downtown, commercial center Deng.In UE access 5G systems, with the movement of user, the coverage area of 5G systems is removed, it is necessary to how seamless solve Be switched in 4G systems, otherwise session will produce interruption.
Fig. 3 is the network architecture for meeting 4G and the two-way switchings of 5G.Its central characteristics be the framework while compatible 4G and 5G frameworks, PGW-C and SMF are combined into one, and PGW-U and UPF are combined into one, and PCF and PCRF are combined into one, and the user plane of UE is always It is anchored on UPF/PGW-U.Between AMF and MME, increase Nx interfaces, sends switching request between cross-system over that interface.This When sample UE switches between LTE and 5G, it can ensure seamless switching.
In 4G systems, UE and Web vector graphic bearer (bearing concept), each carrying represent corresponding Business Stream (Service flows) and its qos parameter.In 5G systems, then using the concept of QoS flow, each QoS flow include Corresponding QoS profile (i.e. OoS configurations) and packet filter (packet filter).
In 5G into 4G handoff procedures, AMF is the network element unrelated with session, does not have session related data.And MME is necessary According to the session-related parameters (such as bearer information) received in switching request, resource is reserved wirelessly surveying (i.e. the sides eNB).Cause This, needs to solve the problems, such as how AMF generates session information in the prior art.
It should be noted that in figs. 1 to 3, interface between two network elements (such as S1-C, S11, Gx, N2, N3, Nx, S5-C etc.) it is the interface that the two network elements are communicated.
For cannot be since AMF cannot generate wireless side caused by session information when cross-system switches in the related technology User equipment reserves the technical issues of resource, and currently no effective solution has been proposed.
Invention content
An embodiment of the present invention provides a kind of switching method and apparatus of cross-system, at least solve in the related technology across It is asked when system switches since AMF cannot generate the technology that wireless side caused by session information cannot be the reserved resource of user equipment Topic.
One side according to the ... of the embodiment of the present invention, provides a kind of switching method of cross-system, and this method includes：Access Know that cross-system switching occurs for user equipment (UE) with the first AMF modules of mobile management function to ps domain, wherein cross-system switching refers to UE Forth generation mobile communication technology 4G systems are switched to from the 5th generation mobile communication technology 5G system, the first AMF modules are located at 5G systems In system；During UE switches to 4G systems from 5G systems, the first AMF modules are by the target carrying information of the UE pre-saved It is sent to mobile management nodes function MME modules, wherein the MME modules in 4G systems are used for according to the target received Carrying information is that UE reserves resource in wireless side.
Further, before the first AMF modules know that cross-system switching occurs for UE, this method further includes：First AMF moulds Block receives and preserves the default bearer information of the transmission of the conversation control function SMF modules in 5G systems；Wherein, target carrying information Including at least default bearer information, default bearer information is to establish the mistake of protocol Data Unit PDU sessions for UE in 5G systems In a 4 g system the making corresponding with the default quality of service stream Default Qos Flow of PDU sessions of Cheng Zhong, SMF module generation Carrying information.
Further, the first AMF modules receive and preserve that the conversation control function SMF modules in 5G systems send lacks After saving carrying information, this method further includes：First AMF modules receive the default bearer information that SMF modules retransmit, In, the default bearer information that the first AMF modules are currently received is the SMF modules life when default quality of service stream changes At carrying information corresponding with the default quality of service stream after variation；First AMF modules replace the default bearer information of preservation It is changed to the default bearer information being currently received.
Further, before the first AMF modules know that cross-system switching occurs for UE, this method further includes：First AMF moulds Block receives and preserves the dedicated bearer information of the transmission of the SMF modules in 5G systems；Wherein, target carrying information includes default bearer Information and dedicated bearer information, dedicated bearer information are to establish service-specific quality stream Dedicated in 5G systems for UE When Qos Flow, the carrying information used in a 4 g system corresponding with service-specific quality stream of SMF modules generation.
Further, this method further includes：When UE switches to the 2nd AMF modules in 5G systems by the first AMF modules, The target carrying information of the UE of preservation is sent to the 2nd AMF modules by the first AMF modules, wherein the 2nd AMF modules are for preserving The target carrying information of the UE received.
One side according to the ... of the embodiment of the present invention, additionally provides a kind of switching method of cross-system, and this method includes： User equipment (UE) is moved from during the 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems Dynamic management node function MME modules receive the target carrying letter of the UE of access and the transmission of the first AMF modules of mobile management function to ps domain Breath, wherein the first AMF modules are located in 5G systems, and MME modules are located in 4G systems；MME modules are held according to the target received Information carrying breath is that UE reserves resource in wireless side.
Further, the target carrying information of the UE of the first AMF modules of MME modules reception transmission includes：MME modules receive The default bearer information that first AMF modules are sent；Wherein, target carrying information includes at least default bearer information, default bearer Information be in 5G systems for UE establish protocol Data Unit PDU sessions during, conversation control function SMF modules generate The carrying information used in a 4 g system corresponding with the default quality of service stream Default Qos Flow of PDU sessions.
Further, the target carrying information of the UE of the first AMF modules of MME modules reception transmission further includes：MME modules connect Receive the dedicated bearer information of the first AMF modules transmission；Wherein, target carrying information includes default bearer information and dedicated bearer letter Breath, dedicated bearer information are SMF modules when establishing service-specific quality stream Dedicated Qos Flow in 5G systems for UE The carrying information used in a 4 g system corresponding with service-specific quality stream generated.
Other side according to the ... of the embodiment of the present invention, provides a kind of switching device of cross-system, which includes：It obtains Unit is known, for knowing that cross-system switching occurs for user equipment (UE), wherein cross-system switching refers to UE from the mobile communication of the 5th generation Technology 5G systems switch to forth generation mobile communication technology 4G systems；First transmission unit, for being switched to from 5G systems in UE During 4G systems, the target carrying information of the UE pre-saved is sent to mobile management nodes function MME modules, In, the MME modules in 4G systems are used to according to the target carrying information received be that UE reserves resource in wireless side.
Further, which further includes：First storage unit, for before knowing that cross-system switching occurs for UE, connecing Receive and preserve the default bearer information of the transmission of the conversation control function SMF modules in 5G systems；Wherein, target carrying information is at least Including default bearer information, default bearer information be in 5G systems for UE establish protocol Data Unit PDU sessions during, What SMF modules generated with the default quality of service stream Default Qos Flow of PDU sessions corresponding uses in a 4 g system Carrying information.
Further, the first storage unit includes：Information receiving module, for the session in receiving and preserving 5G systems After the default bearer information that control function SMF modules are sent, the default bearer information that SMF modules retransmit is received, wherein The default bearer information that information receiving module is currently received is when default quality of service stream changes, and SMF modules generate Carrying information corresponding with the default quality of service stream after variation；Replacement module, for replacing the default bearer information of preservation It is changed to the default bearer information being currently received.
Further, which further includes：Second storage unit, for before knowing that cross-system switching occurs for UE, connecing Receive and preserve the dedicated bearer information of the transmission of the SMF modules in 5G systems；Wherein, target carrying information includes default bearer information With dedicated bearer information, dedicated bearer information is to establish service-specific quality stream Dedicated Qos in 5G systems for UE When Flow, the carrying information used in a 4 g system corresponding with service-specific quality stream of SMF modules generation.
Further, which further includes：Second transmission unit, for UE by 5G systems access and mobility pipe When reason the first AMF modules of function switch to the 2nd AMF modules, the target carrying information of the UE of preservation is sent to the 2nd AMF moulds Block, wherein the 2nd AMF modules are used to preserve the target carrying information of the UE received.
Other side according to the ... of the embodiment of the present invention, provides a kind of switching device of cross-system, which includes：It connects Unit is received, for switching to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system in user equipment (UE) During system, the target carrying information of the UE of access and the transmission of the first AMF modules of mobile management function to ps domain is received, wherein the One AMF modules are located in 5G systems；Prearranged elements, for being that UE reserves money in wireless side according to the target carrying information received Source.
Further, receiving unit includes：First receiving module, the default bearer for receiving the transmission of the first AMF modules Information；Wherein, target carrying information includes at least default bearer information, and default bearer information is to establish association in 5G systems for UE During discussing data cell PDU sessions, the default quality of service stream with PDU sessions of conversation control function SMF modules generation The corresponding carrying informations used in a 4 g system of Default Qos Flow.
Further, receiving unit further includes：Second receiving module, special the holding for receiving the transmission of the first AMF modules Information carrying ceases；Wherein, target carrying information includes default bearer information and dedicated bearer information, and dedicated bearer information is in 5G systems In for UE establish service-specific quality stream Dedicated Qos Flow when, SMF modules generate with service-specific quality stream pair The carrying information used in a 4 g system answered.
According to another embodiment of the invention, a kind of storage medium is provided, storage medium can be set to store Program code for executing following steps：Access and the first AMF modules of mobile management function to ps domain know user equipment (UE) Cross-system switches, wherein cross-system switching refers to UE from the 5th generation mobile communication technology 5G system, and to switch to forth generation movement logical News technology 4G systems, the first AMF modules are located in 5G systems；During UE switches to 4G systems from 5G systems, the first AMF The target carrying information of the UE pre-saved is sent to mobile management nodes function MME modules by module, wherein is located at 4G systems In MME modules be used for according to the target carrying information received be UE reserve resource in wireless side.
Further, storage medium can be set to store the program code for executing following steps：It is set in user Standby UE is from during the 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems, mobile management Nodal function MME modules receive the target carrying information of the UE of access and the transmission of the first AMF modules of mobile management function to ps domain, In, the first AMF modules are located in 5G systems, and MME modules are located in 4G systems；MME modules carry letter according to the target received Breath is that UE reserves resource in wireless side.
Other side according to the ... of the embodiment of the present invention provides a kind of access and mobile management function to ps domain module, the mould Block includes：First processor；First memory for storing first processor executable instruction；For according to first processor Control carry out information transmit-receive communication the first transmitting device；Wherein, first processor is for performing the following operations：Know user Cross-system switching occurs for equipment UE, wherein cross-system switching refers to UE switches to the from the 5th generation mobile communication technology 5G system Four generation mobile communication technology 4G systems；During UE switches to 4G systems from 5G systems, by the target of the UE pre-saved Carrying information is sent to mobile management nodes function MME modules, wherein the MME modules being located in 4G systems are used for according to reception To target carrying information be UE reserve resource in wireless side.
Further, first processor is additionally operable to execute following operation：It receives and preserves the session control work(in 5G systems The default bearer information that energy SMF modules are sent；Wherein, target carrying information includes at least default bearer information, default bearer letter Breath is during establishing protocol Data Unit PDU sessions in 5G systems for UE, and SMF modules are generated scarce with PDU sessions Save the corresponding carrying informations used in a 4 g system of service quality stream Default Qos Flow.
Other side according to the ... of the embodiment of the present invention provides a kind of mobile management nodes function module, the module packet It includes：Second processor；Second memory for storing second processor executable instruction；For the control according to second processor System carries out the second transmitting device of information transmit-receive communication；Wherein, second processor is for performing the following operations：In user equipment (UE) During the 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems, receives access and move The target carrying information for the UE that the first AMF modules of mobility management function are sent, wherein the first AMF modules are located in 5G systems；It presses It is that UE reserves resource in wireless side according to the target carrying information received.
Further, second processor is additionally operable to execute following operation：Receive the default bearer letter of the first AMF modules transmission Breath；Wherein, target carrying information includes at least default bearer information, and default bearer information is to establish agreement in 5G systems for UE During data cell PDU sessions, the default quality of service stream with PDU sessions of conversation control function SMF modules generation The corresponding carrying informations used in a 4 g system of Default Qos Flow.
In embodiments of the present invention, access and the first AMF modules of mobile management function to ps domain know user equipment (UE) occur across System switches, wherein cross-system switching refers to that UE switches to forth generation mobile communication from the 5th generation mobile communication technology 5G system Technology 4G systems, the first AMF modules are located in 5G systems；During UE switches to 4G systems from 5G systems, the first AMF moulds The target carrying information of the UE pre-saved is sent to mobile management nodes function MME modules by block, wherein is located in 4G systems MME modules be used for according to the target carrying information received be UE reserve resource in wireless side, to solve the relevant technologies In when cross-system switches due to AMF cannot generate wireless side caused by session information cannot be user equipment reserve resource skill Art problem.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the network architecture of mobile communication system in the related technology；
Fig. 2 is the schematic diagram of the network architecture of mobile communication system in the related technology；
Fig. 3 is the schematic diagram for being used for 4G and the network architecture of the two-way switchings of 5G in the related technology；
Fig. 4 is a kind of schematic diagram of optional terminal according to the ... of the embodiment of the present invention；
Fig. 5 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Fig. 6 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Fig. 7 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Fig. 8 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Fig. 9 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Figure 10 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Figure 11 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Figure 12 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention；
Figure 13 is the schematic diagram of the switching device of optional cross-system according to the ... of the embodiment of the present invention；
Figure 14 is the schematic diagram of the switching device of optional cross-system according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, " Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.
Embodiment 1
The embodiment of the method that the embodiment of the present application one is provided can be in mobile terminal, terminal or similar fortune It calculates and is executed in device.For running on computer terminals, as shown in figure 4, terminal may include one or more (processor 401 can include but is not limited to Micro-processor MCV or programmable logic device to (one is only shown in figure) processor 401 The processing unit of part FPGA etc.), memory 403 for storing data and the transmitting device 405 for communication function.This Field those of ordinary skill is appreciated that structure shown in Fig. 4 is only to illustrate, and is not caused to the structure of above-mentioned electronic device It limits.
Memory 403 can be used for storing the software program and module of application software, such as the equipment in the embodiment of the present invention The corresponding program instruction/module of control method, processor 401 by operation be stored in the software program in memory 403 with And module realizes above-mentioned method to perform various functions application and data processing.Memory may include that high speed is random Memory may also include nonvolatile memory, such as one or more magnetic storage device, flash memory or other are non-volatile Property solid-state memory.In some instances, memory can further comprise the memory remotely located relative to processor, these Remote memory can pass through network connection to terminal.The example of above-mentioned network includes but not limited to internet, enterprise Intranet, LAN, mobile radio communication and combinations thereof.
Transmitting device is used to receive via a network or transmission data.Above-mentioned network specific example may include calculating The wireless network that the communication providers of machine terminal provide.In an example, transmitting device includes a network adapter (Network Interface Controller, NIC), can be connected with other network equipments by base station so as to interconnection Net is communicated.
It should be noted that the access of the application and mobile management function to ps domain module, mobile management nodes function module can Think above-mentioned terminal.
According to embodiments of the present invention, a kind of embodiment of the method for the switching method of cross-system is provided, it should be noted that Step shown in the flowchart of the accompanying drawings can execute in the computer system of such as a group of computer-executable instructions, and It, in some cases, can be to execute institute different from sequence herein and although logical order is shown in flow charts The step of showing or describing.
Fig. 5 is the flow chart of the switching method of optional cross-system according to the ... of the embodiment of the present invention, as shown in figure 5, the party Method includes the following steps：
Step S501, access and the first AMF modules of mobile management function to ps domain know that cross-system switching occurs for user equipment (UE), Cross-system switching refers to UE switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system, and first AMF modules are located in 5G systems.
Step S502, during UE switches to 4G systems from 5G systems, the first AMF modules are by the UE's pre-saved Target carrying information is sent to mobile management nodes function MME modules, and the MME modules in 4G systems are used for according to receiving Target carrying information be UE reserve resource in wireless side.
By above-described embodiment, access and the first AMF modules of mobile management function to ps domain know that user equipment (UE) generation is interdepartmental System switching, cross-system switching refers to that UE switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system System, the first AMF modules are located in 5G systems；During UE switches to 4G systems from 5G systems, the first AMF modules will be advance The target carrying information of the UE of preservation is sent to mobile management nodes function MME modules, and the MME modules in 4G systems are used for It is that UE reserves resource in wireless side according to the target carrying information received.Switch in the related technology in cross-system to solve When due to AMF cannot generate wireless side caused by session information cannot be user equipment reserve resource the technical issues of, realize When cross-system switches in the technique effect that wireless side is the reserved resource of user equipment.
Above-mentioned method is the method for running on the AMF modules in 5G systems.
In an alternative embodiment, before the first AMF modules know that cross-system switching occurs for UE, the first AMF moulds Block receives and preserves the default bearer information of the transmission of the conversation control function SMF modules in 5G systems；Target carrying information is at least Including default bearer information, default bearer information be in 5G systems for UE establish protocol Data Unit PDU sessions during, What SMF modules generated with the default quality of service stream Default Qos Flow of PDU sessions corresponding uses in a 4 g system Carrying information.
In order to ensure that the default bearer information preserved is always newest, is received in the first AMF modules and preserve 5G systems In conversation control function SMF modules send default bearer information after, when default quality of service stream changes, first AMF modules receive the default bearer information that SMF modules retransmit, wherein the default bearer that the first AMF modules are currently received Information is when default quality of service stream changes, and SMF modules generate corresponding with the default quality of service stream after variation Carrying information；The default bearer information of preservation is replaced with the default bearer information being currently received by the first AMF modules.
In another optional embodiment, before the first AMF modules know that cross-system switching occurs for UE, the first AMF Module receives and preserves the dedicated bearer information of the transmission of the SMF modules in 5G systems；Target carrying information includes default bearer letter Breath and dedicated bearer information, dedicated bearer information are to establish service-specific quality stream Dedicated Qos in 5G systems for UE When Flow, the carrying information used in a 4 g system corresponding with service-specific quality stream of SMF modules generation.
When UE switches to the 2nd AMF modules in 5G systems by the first AMF modules, the first AMF modules are by the UE of preservation Target carrying information be sent to the 2nd AMF modules, wherein the 2nd AMF modules be used for preserves the UE received target carry Information.
According to embodiments of the present invention, a kind of embodiment of the method for the switching method of cross-system is additionally provided, this method is fortune The method of row MME modules in 4G systems.This method includes：
Step S101 switches to forth generation mobile communication skill in user equipment (UE) from the 5th generation mobile communication technology 5G system During art 4G systems, mobile management nodes function MME modules receive access and the first AMF modules of mobile management function to ps domain hair The target carrying information of the UE sent, wherein the first AMF modules are located in 5G systems, and MME modules are located in 4G systems；
Step S102, MME module is that UE reserves resource in wireless side according to the target carrying information received.
By above-described embodiment, forth generation movement is switched to from the 5th generation mobile communication technology 5G system in user equipment (UE) During mechanics of communication 4G systems, mobile management nodes function MME modules receive access and the first AMF of mobile management function to ps domain The target carrying information for the UE that module is sent, wherein the first AMF modules are located in 5G systems, and MME modules are located in 4G systems, MME modules are that UE reserves resource in wireless side according to the target carrying information received.To solve in the related technology across It is asked when system switches since AMF cannot generate the technology that wireless side caused by session information cannot be the reserved resource of user equipment Topic is realized when cross-system switches in the technique effect that wireless side is the reserved resource of user equipment.
Optionally, in step S101, the target carrying information that MME modules receive the UE that the first AMF modules are sent includes： MME modules receive the default bearer information that the first AMF modules are sent；Wherein, target carrying information is believed including at least default bearer Breath, default bearer information are conversation control functions during establishing protocol Data Unit PDU sessions in 5G systems for UE What SMF modules generated with the default quality of service stream Default Qos Flow of PDU sessions corresponding uses in a 4 g system Carrying information.
Optionally, in step S101, the target carrying information that MME modules receive the UE that the first AMF modules are sent also is wrapped It includes：MME modules receive the dedicated bearer information that the first AMF modules are sent；Wherein, target carrying information includes default bearer information With dedicated bearer information, dedicated bearer information is to establish service-specific quality stream Dedicated Qos in 5G systems for UE When Flow, the carrying information used in a 4 g system corresponding with service-specific quality stream of SMF modules generation.
In embodiments herein, a kind of switching method of cross-system is provided, UE establishes PDU in 5G systems During session (namely PDU sessions), network side SMF generates the corresponding Bearer information of deafault Qos flow (i.e. carrying information).The information is issued UE and AMF and preserved by SMF.
When being that UE establishes proprietary QoS flow in 5G systems, network generates the corresponding Bearer information of Qos flow, SMF The information is issued UE and AMF to preserve.
In 5G into 4G net system switching process, the bearer information of preservation is sent to MME by AMF.MME believes according to bearer Breath, resource is reserved in wireless side.
When UE is in 5G systems, and deafault Qos flow change, network updates deafault Qos flow Updated information is simultaneously issued UE and AMF preservations by corresponding Bearer information, SMF.
When UE internal generation AMF switchings in 5G systems, purpose AMF (AMF after switching) is from source AMF (before switching AMF) obtain preserve the corresponding 4G systems of QoS flow in Bearer information.
Embodiments herein is described in detail with reference to Fig. 6 to Figure 12.
Fig. 6 is the specific implementation mode of PDU session establishments in the present invention.
Step S601, terminal, which determines, initiates new PDU sessions, then initiates the request of PDU session establishments, and UE is sent to AMF Mobility NAS message, wherein the session NAS message cell sent to SMF comprising UE.With new in session NAS message cell The PDU conversation types of queued session, SSC patterns of selection etc., and support the instruction of 5G and 4G IWK.
The request of PDU session establishments is sent to AMF by step S602, NG RAN.
Step S603, AMF receive and parse mobility NAS message, and suitable SMF is selected (namely according to wherein information SMF/PGW-C in the application), and preserve the correspondence between PDU session identifications and the SMF of selection.AMF is by session NAS Message, data network name and user identifier, PDU session identifications be transmitted to together selection SMF (namely send session establishment ask It asks and is sent to SMF).
Step S604, SMF obtain the subscription data of user from SDM.
Step S605, SMF check user's signing, determine whether the PDU session requests, and determine that the PDU sessions are pre- The QoS information of mandate, wherein containing the information (including QoS) of default bearers of the UE when 4G is accessed.Optional SMF is also possible to The information of default bearer when negotiating with PCF to determine that the required default QoS informations of the PDU sessions and 4G access (including QoS).
Step S606, SMF select suitable user plane functions UPF, and send N4 to the UPF of selection according to session information Session establishment is asked, the information such as QoS with request in message request, wherein at least include QoS flow label and be corresponding on Downlink flow template.UPF establishes N4 session related contexts, preserves QoS information, and UPF distributes the N3 tunneled upstreams tunnel of the session Mark, and the response of N4 session establishments is returned to SMF, wherein the N3 tunneled upstream Tunnel Identifiers with UPF distribution.
Step S607, SMF obtain the Tunnel Identifier of UPF distribution, and establish the wireless of the session to base station requests by AMF Resource.In the message that SMF is sent to AMF carry SM cells, cell include PDU session identifications, the session request QoS information With the N3 tunneled upstream Tunnel Identifiers that UPF is session distribution.In addition, SMF exists the information and UE of default QoS flow The information of default bearer when 4G is accessed also brings AMF, and the information of default bearer when AMF preserves 4G accesses therein (includes QoS)。
Step S608, AMF send N2-AP radio resources to base station and establish request message.Wherein include what AMF was received The information of default bearer of the information and UE of default QoS flow when 4G is accessed.
Step S609, base station according to receiving QoS information distributing radio resource, and and terminal interaction, establish the nothing of the session Line dedicated bearer.In the RRC configuration request messages that base station is sent to UE, the default QoS received from AMF are carried The information of default bearer of the information and UE of flow when 4G is accessed.N3 tunnel down Tunnel Identifiers are distributed in base station.
Step S610, terminal carry out RRC configuration responses.
Step S611, base station returns to N2-AP radio resources to AMF and establishes response message, wherein the N3 with base station distribution Tunnel down Tunnel Identifier.
Step S612, AMF return to radio resource to SMF and establish response message, wherein under the tunnels N3 with base station distribution Row Tunnel Identifier.
Step S613, SMF send the request of N4 session updates to UPF, and the N3 tunnel down Tunnel Identifiers of base station distribution are sent out Give UPF.
Step S614, optionally, AMF can also be default when 4G is accessed the information and UE of default QoS flow The information of carrying issues UE by NAS message.
Above-mentioned step S612 and step S614 can be parallel.
Step S615, SMF return to the response of PDU session establishments to AMF, carry the QoS information of the session, include at least pre-granted The QoS flow of power identifies and corresponding uplink flow template.Optionally, the information and UE of default QoS flow can also be included The information of the information of default bearer when 4G is accessed, default bearer when AMF accesses 4G is preserved as transparent data.
Step S616, AMF are responded to UE forwarding PDU session establishments.Terminal preserves the default Qos flow's received The information of the default bearer of information and UE when 4G is accessed.
Step S617, PDU session establishment is completed, and UE distributes IP address by the PDU session request networks, passes through above-mentioned step Suddenly new PDU sessions are established, terminal can send by the PDU sessions and receive uplink and downlink data.
Fig. 7 is the specific implementation mode of the PDU session establishments under Home Routed scenes in the present invention.
Step S701, terminal, which determines, initiates new PDU sessions, then initiates the request of PDU session establishments, and UE is sent to AMF Mobility NAS message, wherein the session NAS message cell sent to SMF comprising UE.With new in session NAS message cell The PDU conversation types of queued session, SSC patterns of selection etc., and support the instruction of 5G and 4G IWK.
Step S702, AMF receive and parse mobility NAS message, and suitable visited network V- is selected according to wherein information SMF, and preserve the correspondence between PDU session identifications and the V-SMF of selection.AMF is by session NAS message, data network name And user identifier, PDU session identifications are transmitted to the V-SMF of selection together, that is, send the request of PDU session establishments.
Step S703, establishes N4 sessions, and V-SMF selects suitable user plane functions V-UPF according to session information, and to The V-UPF of selection sends the request of N4 session establishments.V-UPF distributes the N3 tunneled upstreams Tunnel Identifier and the tunnels N9 of the session Lower line identifier, and return to V-SMF.
Step S704, V-SMF (are identified) to the home network of user forwarding session NAS message comprising N9 tunnel downs.With Family home network selects suitable H-SMF (SMF/PGW-C namely in the application).H-SMF obtains the signing of user from SDM Data.(during simplification, not shown in figure) sends the request of PDU session establishments.
Step S705, H-SMF check user's signing, determine whether the PDU session requests, and determine the PDU sessions The QoS information of pre-authorization, wherein containing the information (including QoS) of default bearers of the UE when 4G is accessed.Optional SMF may be used also The letter of default bearer when can negotiate with PCF to determine that the required default QoS informations of the PDU sessions and 4G access Breath (including QoS).
Step S706, H-SMF select suitable user plane functions H-UPF according to session information, and to the H-UPF of selection The request of N4 session establishments is sent, the information such as QoS with request in message request wherein at least include QoS flow label and right Uplink and downlink flow template and N9 the tunnel downs mark answered.H-UPF establishes N4 session related contexts, preserves QoS information, UPF The N9 tunneled upstream Tunnel Identifiers of the session are distributed, and the response of N4 session establishments is returned to SMF, wherein with H-UPF distribution N9 tunneled upstream Tunnel Identifiers.
Step S707, radio resource request are established.H-SMF obtains the Tunnel Identifier of UPF distribution, and passes through V-SMF, AMF The radio resource of the session is established to base station requests.The message issues V-SMF, including SM cells, cell includes PDU session marks Knowledge, the QoS information of the session request and UPF are the N9 tunneled upstream Tunnel Identifiers of session distribution, and V-SMF is N9 tunnels therein Line identifier replaces with N3 tunneled upstreams mark on road, and the information is then transmitted to AMF.Wherein, QoS information further comprises UE and exists The information of default bearer when 4G is accessed.
The message standard is issued AMF by step S708, V-SMF, and AMF preserves the information of default bearer when 4G therein is accessed (including QoS) sends radio resource request and establishes message.
Step S709, AMF send N2-AP radio resources to base station and establish request message.Wherein include what AMF was received The information of default bearer of the information and UE of default QoS flow when 4G is accessed.
Step S710, base station according to receiving QoS information distributing radio resource, and and terminal interaction, establish the nothing of the session Line dedicated bearer.Optionally, in the RRC configuration request messages that base station is sent to UE, the default received from AMF is carried The information of default bearer of the information and UE of QoS flow when 4G is accessed.N3 tunnel down Tunnel Identifiers are distributed in base station.
Step S711 returns to RRC configuration response message.
Step S712, base station returns to N2-AP radio resources to AMF and establishes response message, wherein the N3 with base station distribution Tunnel down Tunnel Identifier.
Step S713, AMF return to radio resource to V-SMF and establish response message, wherein the tunnels N3 with base station distribution Downlink tunnel identifies.
Step S714, V-SMF send N4 session updates to UPF and ask, the N3 tunnel down Tunnel Identifiers that base station is distributed, The N9 tunneled upstreams mark of H-UPF distribution is sent to V-UPF.
Step S715, V-SMF forwarding radio resource foundation responds to H-SMF.
Step S716, optionally, AMF can also be default when 4G is accessed the information and UE of default QoS flow The information of carrying issues UE by NAS message.
Above-mentioned step S716 and step S713 can be parallel.
Step S717, H-SMF return to the response of PDU session establishments to AMF, carry the QoS information of the session, include at least pre- The QoS flow of mandate identifies and corresponding uplink flow template.Optionally, can also comprising default QoS flow information and The information of the information of default bearers of the UE when 4G is accessed, default bearer when AMF accesses 4G is preserved as transparent data.It should Message is transmitted to AMF by V-SMF.
Step S718, AMF are responded to UE forwarding PDU session establishments.Terminal preserves the pre-authorization QoS information received and UE The information of default bearer when 4G is accessed.
Step S719, UE inform that PUD session establishments are completed to AMF.
Step S720, AMF inform that PUD session establishments are completed to H-SMF.UE distributes IP by the PDU session request networks Address, establishes new PDU sessions through the above steps, and terminal can send by the PDU sessions and receive uplink and downlink data.
Fig. 8 is that QoS flow are established and newer specific implementation mode in the present invention.
Step S801, application function (Application Function, AF) ask the money to PCF/PCRF queued sessions Source.
Step S802, PCF/PCRF send the information of the QoS flow of UE to SMF, such as increase new QoS according to strategy Flow, or the existing QoS flow of update.Wherein further comprise the carrying information when QoS flow are mapped to 4G accesses.
The QoS flow information of step S803, SMF/PGW-C update UPF/PGW-U, such as increases new QoS flow, or Update existing QoS flow, wherein PGW-C updates the carrying information on PGW-U.
Step S804, SMF establish the radio resource of the session by AMF to base station requests.The message that SMF is sent to AMF In carry SM cells, cell includes PDU session identifications, the QoS flow information of the session request and UE when 4G is accessed The corresponding carrying informations of QoS flow also bring AMF, and AMF preserves the letter of corresponding carrying information when 4G therein is accessed Breath.
Step S805, AMF send N2-AP radio resources to base station and establish request message.Wherein include the QoS that AMF is received Corresponding carrying information of the information and UE of flow when 4G is accessed.
Step S806, base station according to receiving QoS information distributing radio resource, and and terminal interaction, establish or update the meeting The wireless dedicated bearer of words.Base station is sent in the RRC information of UE, carries the information and UE of the QoS flow received from AMF The corresponding carrying information when 4G is accessed.
Step S807 returns to RRC configuration responses.
Step S808, base station return to N2-AP radio resources to AMF and establish response message.
Step S809, AMF return to radio resource to SMF and establish response message.
Step S810, optionally, AMF can also the information and UE of QoS flow when 4G is accessed corresponding carrying information UE is issued by NAS message.
Above-mentioned step S809 and step S810 can be parallel.
Fig. 9 is specific implementation mode when default QoS flow information changes in the present invention.
Step S901, due to various reasons, the information of default Qos flow are changed, as PCF/PCRF is notified SMF。
Step S902, SMF/PGW-C update the default QoS flow information of UPF/PGW-U.Wherein, it is also possible to need PGW-C updates the default bearer information on PGW-U.
Step S903, SMF update the radio resource of default QoS flow by AMF to base station requests.SMF is to AMF Carry SM cells in the message of transmission, cell include PDU session identifications, the session request default QoS flow believe Breath and default bearer information of the UE when 4G is accessed also bring AMF, and AMF updates pair when its previously saved 4G access therein Answer default bearer information.
Step S904, AMF send N2-AP radio resources to base station and update request message.Wherein include what AMF was received Default bearer information of the information and UE of default QoS flow when 4G is accessed.
Step S905, base station according to receive QoS information update radio resource, and and terminal interaction, update the nothing of the session Line dedicated bearer.Base station is sent in the RRC information of UE, carry the default QoS flow received from AMF information and UE corresponding default bearer information when 4G is accessed.
Step S906 returns to RRC configuration responses.
Step S907, base station return to N2-AP radio resources to AMF and update response message.
Step S908, AMF return to radio resource to SMF and update response message.
Step S909, optionally, AMF can also be default when 4G is accessed the information and UE of default QoS flow Carrying information issues UE by NAS message.
Above-mentioned step S908 and step S909 can be parallel.
Figure 10 is that UE is moved under idle states, and the specific implementation mode that AMF changes occurs.
Step S1001, UE send NAS message, such as TAU to the base stations NG.
Step S1002, a base station selected new AMF (namely tAMF), and NAS message is transmitted to tAMF.
Step S1003, tAMF ask the context of user to sAMF.
Step S1004, sAMF carry out the response of context request, and for sAMF by the safe context of UE, session context is (every A PDU session informations, including the addresses SMF, PDU session ids etc.) it is sent to tAMF, which includes each PDU sessions are corresponding Default bearer information when 4G is accessed.
Step S1005, tAMF are according to the context received, based on per PDU sessions, establishing in the session and corresponding SMF N11 interfaces.
Interface response is established in step S1006, SMF return.
Subsequent step is as TAU flows after the movement of existing idle states, and details are not described herein.
Figure 11 is that UE is moved under connected states, and the specific implementation mode that AMF changes occurs.
Step S1101, UE are moved under connect states, and the base stations 5G, which determine, to be needed to initiate switching.NG RAN are sent to sAMF Switching request.
Step S1102, sAMF have found the base stations target 5G not in range, and sAMF selects new AMF (namely tSMF).To TSMF sends switching request.Safe context is wherein contained, session context (for each PDU session, contains The addresses SMF, PDU session ids etc.) it is sent to tAMF, which includes corresponding default when 4G is accessed of each PDU sessions to hold Information carrying ceases, and optional, the corresponding dedicated bearer information of common Q oS flow.
Step S1103, tAMF are according to the context received, based on per PDU sessions, establishing in the session and corresponding SMF N11 interfaces.
Step S1104, SMF, which is returned, establishes response.
Reserve resource in step S1105, tAMF request target side group station.
Step S1106, tAMF return to switching request response to sAMF.
Subsequent step is as existing connect states switching flow, and details are not described herein.
Figure 12 is the flow chart that 5G switches to 4G in the present invention.
UE initiates PDU session establishment processes, and with reference to previous embodiment, UE has been attached to NG system, and establishes PDU session。
The base stations step S1201, NG (NR RAN), which determine, needs to initiate switching, and NG RAN send switching request to AMF.
Step S1202, AMF judgement is to be switched to 4G systems from 5G, and switching request is sent to MME.Wherein for each PDU Session contains the addresses SMF, APN, and the UE stored, when 4G is accessed, corresponding carrying information is (referring to aforementioned implementation Example), wherein at least include default bearer information, optionally, it is also possible to include dedicated bearer information.
Step S1203, MME select suitable S-GW to send create according to the session information received, according to every session Session requests (session generates request).
Step S1204, sends handover preparation request, and MME is established to E-UTRAN requests and lacked according to the session information received Save bearing resource.Wherein, each session will establish corresponding default bearer resource.
Step S1205, E-UTRAN reserve the radio resource that UE is needed when wireless side accesses, and return to switching and prepare to ask Response message is sought, wherein with reserved wireless resource information.The message is also each reserved resource success with purposeful base station 2 PDN Connection distribution S1-U downlink tunnels mark.
Step S1206, MME return to switching request response to AMF, wherein containing the wireless resource information of target BS.
Step S1207, AMF return to handover request ack message to the base stations NG, are with purposeful base station (base stations E-UTRAN) The reserved wireless resource information of these PDU sessions.
The step base station S1208, NG sends switching command to UE, the wireless resource information reserved with purposeful base station.
Step S1209, user equipment (UE) are accessed from the base stations 4G.
Step S1210, eNB send handoff completion message to MME.
Step S1211 to S1215 is only briefly described herein as across the MME handoff techniques of existing 4G.
Step S1211, MME send session updates request to S-GW, wherein carrying S1-U downlink tunnels mark.
Step S1212, S-GW send session updates request to PGW-C, wherein also carrying the media information of S-GW.
Step S1213, PGW-C and PGW-U interaction, allocation medium face resource.
Step S1214, PGW-C return to the response that session updates are asked to S-GW, wherein carrying the media letter of PGW-U Breath.
Step S1215, S-GW return to the response (namely session updates response) of session updates to MME；UE can be in 4G at this time On the default bearer of PDN connection, transmission/reception uplink and downlink data.
Step S1216, MME send switching to AMF and complete instruction.
The N2 interfaces of step S1217, AMF release and the base stations NG.P-GW initiates the activation of remaining dedicated bearer later.
It is achieved in that in addition, one kind is optional, if in step S1202, AMF is issued in the switching request of MME, is not only wrapped Contain default bearer information, further comprises the corresponding 4G dedicated bearers information of QoS flow, then in step S1204, MME is not only Default bearer resource is asked, dedicated bearer resource is also requested.At this point, there is no need to the activation that P-GW initiates remaining dedicated bearer Process.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but it is very much In the case of the former be more preferably embodiment.Based on this understanding, technical scheme of the present invention is substantially in other words to existing The part that technology contributes can be expressed in the form of software products, which is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, calculate Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
Embodiment 2
A kind of switching device of cross-system is additionally provided in the embodiment of the present invention.The device for realizing above-described embodiment and Preferred embodiment had carried out repeating no more for explanation.As used below, predetermined work(may be implemented in term " module " The combination of the software and/or hardware of energy.It is hard although device described in following embodiment is preferably realized with software The realization of the combination of part or software and hardware is also that may and be contemplated.
Figure 13 is the schematic diagram of the switching device of optional cross-system according to the ... of the embodiment of the present invention.As shown in figure 13, should Device may include：Know unit 131 and the first transmission unit 132.
Unit 131 is known, for knowing that cross-system switching occurs for user equipment (UE), wherein cross-system switching refer to UE from 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems；
First transmission unit 132, for during UE switches to 4G systems from 5G systems, by the UE's pre-saved Target carrying information is sent to mobile management nodes function MME modules, wherein be located at 4G systems in MME modules be used for according to The target carrying information received is that UE reserves resource in wireless side.
By above-described embodiment, know that unit knows that cross-system switching occurs for user equipment (UE), wherein cross-system, which switches, is Refer to UE and switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system；First transmission unit is in UE During 5G systems switch to 4G systems, the target carrying information of the UE pre-saved is sent to mobile management nodes work( It can MME modules, wherein the MME modules in 4G systems are used to according to the target carrying information received be UE in wireless side Reserved resource.To solve in the related technology when cross-system switches since AMF cannot be generated caused by session information wirelessly Side cannot be the technical issues of user equipment reserves resource, realize reserved for user equipment in wireless side when cross-system switches The technique effect of resource.
Above-mentioned device can be applied to the AMF modules in 5G systems.
In the above-described embodiments, which further includes：First storage unit, for know UE occur cross-system switch it Before, receive and preserve the default bearer information of the transmission of the conversation control function SMF modules in 5G systems；Wherein, target carrying letter Breath includes at least default bearer information, and default bearer information is to establish protocol Data Unit PDU sessions in 5G systems for UE In the process, SMF modules generate it is corresponding with the default quality of service stream Default Qos Flow of PDU sessions in a 4 g system The carrying information used.
Optionally, the first storage unit includes：Information receiving module, for the session control in receiving and preserving 5G systems After the default bearer information that function SMF modules processed are sent, the default bearer information that SMF modules retransmit is received, wherein letter The default bearer information that is currently received of breath receiving module be when default quality of service stream changes, what SMF modules generated Carrying information corresponding with the default quality of service stream after variation；Replacement module, the default bearer information for that will preserve are replaced For the default bearer information being currently received.
In an alternative embodiment, which further includes：Second storage unit, for knowing UE generation cross-systems Before switching, the dedicated bearer information of the transmission of the SMF modules in 5G systems is received and preserved；Wherein, target carrying information includes Default bearer information and dedicated bearer information, dedicated bearer information are to establish service-specific quality stream in 5G systems for UE When Dedicated Qos Flow, the carrying used in a 4 g system corresponding with service-specific quality stream of SMF modules generation Information.
In another optional embodiment, which further includes：Second transmission unit is used in UE by 5G systems When access and the first AMF modules of mobile management function to ps domain switch to the 2nd AMF modules, the target carrying information of the UE of preservation is sent out It send to the 2nd AMF modules, wherein the 2nd AMF modules are used to preserve the target carrying information of the UE received.
A kind of switching device of cross-system is additionally provided in the embodiment of the present invention.The device for realizing above-described embodiment and Preferred embodiment had carried out repeating no more for explanation.As used below, predetermined work(may be implemented in term " module " The combination of the software and/or hardware of energy.It is hard although device described in following embodiment is preferably realized with software The realization of the combination of part or software and hardware is also that may and be contemplated.
Figure 14 is the schematic diagram of the switching device of optional cross-system according to the ... of the embodiment of the present invention.As shown in figure 14, should Device may include：Receiving unit 141 and Prearranged elements 142.
Receiving unit 141 is moved for switching to forth generation from the 5th generation mobile communication technology 5G system in user equipment (UE) During dynamic mechanics of communication 4G systems, the target for receiving the UE of access and the transmission of the first AMF modules of mobile management function to ps domain is held Information carrying ceases, wherein the first AMF modules are located in 5G systems；
Prearranged elements 142, for being that UE reserves resource in wireless side according to the target carrying information received.
By above-described embodiment, receiving unit switches in user equipment (UE) from the 5th generation mobile communication technology 5G system During four generation mobile communication technology 4G systems, receive the UE's of access and the transmission of the first AMF modules of mobile management function to ps domain Target carrying information, the first AMF modules are located in 5G systems；Prearranged elements according to the target carrying information received be UE in nothing Line side reserves resource.To solve in the related technology when cross-system switches since AMF cannot be generated caused by session information Wireless side cannot be user equipment reserve resource the technical issues of, realize when cross-system switch wireless side be user equipment The technique effect of reserved resource.
Optionally, receiving unit includes：First receiving module, the default bearer letter for receiving the transmission of the first AMF modules Breath；Wherein, target carrying information includes at least default bearer information, and default bearer information is to establish agreement in 5G systems for UE During data cell PDU sessions, the default quality of service stream with PDU sessions of conversation control function SMF modules generation The corresponding carrying informations used in a 4 g system of Default Qos Flow.
Optionally, receiving unit further includes：Second receiving module, the dedicated bearer for receiving the transmission of the first AMF modules Information；Wherein, target carrying information includes default bearer information and dedicated bearer information, and dedicated bearer information is in 5G systems When establishing service-specific quality stream Dedicated Qos Flow for UE, SMF modules generate corresponding with service-specific quality stream The carrying information used in a 4 g system.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong Following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with arbitrary The form of combination is located in different processors.
Embodiment 3
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can To be arranged to store the program code for executing following steps：
S11 knows that cross-system switching occurs for user equipment (UE), wherein cross-system switching refers to UE logical from the movement of the 5th generation News technology 5G systems switch to forth generation mobile communication technology 4G systems；
S12 sends the target carrying information of the UE pre-saved during UE switches to 4G systems from 5G systems To mobile management nodes function MME modules, wherein the MME modules in 4G systems are used to carry according to the target received Information is that UE reserves resource in wireless side.
Optionally, storage medium is also configured to store the program code for executing following steps：
S21 switches to forth generation mobile communication technology 4G in user equipment (UE) from the 5th generation mobile communication technology 5G system During system, the target carrying information of the UE of access and the transmission of the first AMF modules of mobile management function to ps domain is received, wherein First AMF modules are located in 5G systems；
S22 is that UE reserves resource in wireless side according to the target carrying information received.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or The various media that can store program code such as CD.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：Know user Cross-system switching occurs for equipment UE, wherein cross-system switching refers to UE switches to the from the 5th generation mobile communication technology 5G system Four generation mobile communication technology 4G systems；During UE switches to 4G systems from 5G systems, by the target of the UE pre-saved Carrying information is sent to mobile management nodes function MME modules, wherein the MME modules being located in 4G systems are used for according to reception To target carrying information be UE reserve resource in wireless side.
Optionally, in the present embodiment, processor is executed according to stored program code in storage medium：It is set in user Standby UE receives access from during the 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems The target carrying information of the UE sent with the first AMF modules of mobile management function to ps domain, wherein the first AMF modules are located at 5G systems In；It is that UE reserves resource in wireless side according to the target carrying information received.
Optionally, the specific example in the present embodiment can refer to described in above-described embodiment and optional embodiment Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (20)

1. a kind of switching method of cross-system, which is characterized in that including：
Access and the first AMF modules of mobile management function to ps domain know that cross-system switching occurs for user equipment (UE), wherein described interdepartmental System switching refers to that the UE switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system, described First AMF modules are located in the 5G systems；
The UE switches to the 4G systems from the 5G systems during, the first AMF modules will pre-save The target carrying information of the UE is sent to mobile management nodes function MME modules, wherein is located at described in the 4G systems MME modules are used to according to the target carrying information received be that the UE reserves resource in wireless side.
2. according to the method described in claim 1, it is characterized in that, knowing that the UE generations are interdepartmental in the first AMF modules Before system switching, the method further includes：
The first AMF modules receive and preserve the default bearer of the transmission of the conversation control function SMF modules in the 5G systems Information；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G It is that the SMF modules are generating with the PDU sessions in system during the UE establishes protocol Data Unit PDU sessions The corresponding carrying informations used in the 4G systems of default quality of service stream Defaul t Qos Flow.
3. according to the method described in claim 2, it is characterized in that, being received in the first AMF modules and preserving the 5G systems After the default bearer information that conversation control function SMF modules in system are sent, the method further includes：
The first AMF modules receive the default bearer information that the SMF modules retransmit, wherein the first AMF modules The default bearer information being currently received be when the default quality of service stream changes, the SMF modules generate with The corresponding carrying information of the default quality of service stream after variation；
The default bearer information of preservation is replaced with the default bearer information being currently received by the first AMF modules.
4. according to the method described in claim 1, it is characterized in that, knowing that the UE generations are interdepartmental in the first AMF modules Before system switching, the method further includes：
The first AMF modules receive and preserve the dedicated bearer information of the transmission of the SMF modules in the 5G systems；
Wherein, the target carrying information includes default bearer information and the dedicated bearer information, the dedicated bearer information When be in the 5G systems being that the UE establishes service-specific quality stream Dedicated Qos Flow, the SMF modules life At the carrying information used in the 4G systems corresponding with the service-specific quality stream.
5. method as claimed in any of claims 1 to 4, which is characterized in that the method further includes：
When the UE switches to the 2nd AMF modules in the 5G systems by the first AMF modules, the first AMF moulds The target carrying information of the UE of preservation is sent to the 2nd AMF modules by block, wherein the 2nd AMF modules are used for Preserve the target carrying information of the UE received.
6. a kind of switching method of cross-system, which is characterized in that including：
The mistake of forth generation mobile communication technology 4G systems is switched to from the 5th generation mobile communication technology 5G system in user equipment (UE) Cheng Zhong, mobile management nodes function MME modules receive the UE's of access and the transmission of the first AMF modules of mobile management function to ps domain Target carrying information, wherein the first AMF modules are located in the 5G systems, and the MME modules are located at the 4G systems In；
The MME modules are that the UE reserves resource in wireless side according to the target carrying information received.
7. according to the method described in claim 6, it is characterized in that, the MME modules receive what the first AMF modules were sent The target carrying information of the UE includes：
The MME modules receive the default bearer information that the first AMF modules are sent；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G Be in system during the UE establishes protocol Data Unit PDU sessions, conversation control function SMF modules generate with it is described The corresponding carrying informations used in the 4G systems of default quality of service stream Default Qos Flow of PDU sessions.
8. the method according to the description of claim 7 is characterized in that the MME modules receive what the first AMF modules were sent The target carrying information of the UE further includes：
The MME modules receive the dedicated bearer information that the first AMF modules are sent；
Wherein, the target carrying information includes the default bearer information and the dedicated bearer information, the dedicated bearer Information is in the 5G systems when being that the UE establishes service-specific quality stream Dedicated Qos Flow, the SMF moulds The carrying information used in the 4G systems corresponding with the service-specific quality stream that block generates.
9. a kind of switching device of cross-system, which is characterized in that including：
Unit is known, for knowing that cross-system switching occurs for user equipment (UE), wherein cross-system switching refer to the UE from 5th generation mobile communication technology 5G system switches to forth generation mobile communication technology 4G systems；
First transmission unit, for during the UE switches to the 4G systems from the 5G systems, will pre-save The target carrying information of the UE be sent to mobile management nodes function MME modules, wherein the institute being located in the 4G systems MME modules are stated for being that the UE reserves resource in wireless side according to the target carrying information received.
10. device according to claim 9, which is characterized in that described device further includes：
First storage unit, for before knowing that cross-system switching occurs for the UE, receiving and preserving in the 5G systems The default bearer information that conversation control function SMF modules are sent；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G It is that the SMF modules are generating with the PDU sessions in system during the UE establishes protocol Data Unit PDU sessions The corresponding carrying informations used in the 4G systems of default quality of service stream Defaul t Qos Flow.
11. device according to claim 10, which is characterized in that first storage unit includes：
Information receiving module is sent default for the conversation control function SMF modules in receiving and preserving the 5G systems After carrying information, the default bearer information that the SMF modules retransmit is received, wherein described information receiving module is current The default bearer information received be when the default quality of service stream changes, the SMF modules generate with variation The corresponding carrying information of the default quality of service stream afterwards；
Replacement module, for the default bearer information of preservation to be replaced with the default bearer information being currently received.
12. device according to claim 9, which is characterized in that described device further includes：
Second storage unit, for before knowing that cross-system switching occurs for the UE, receiving and preserving in the 5G systems The dedicated bearer information that SMF modules are sent；
Wherein, the target carrying information includes default bearer information and the dedicated bearer information, the dedicated bearer information When be in the 5G systems being that the UE establishes service-specific quality stream Dedicated Qos Flow, the SMF modules life At the carrying information used in the 4G systems corresponding with the service-specific quality stream.
13. the device according to any one of claim 9 to 12, which is characterized in that described device further includes：
Second transmission unit is used in the UE by the first AMF modules of access and mobile management function to ps domain in the 5G systems When switching to the 2nd AMF modules, the target carrying information of the UE of preservation is sent to the 2nd AMF modules, wherein institute State target carrying information of the 2nd AMF modules for preserving the UE received.
14. a kind of switching device of cross-system, which is characterized in that including：
Receiving unit, for switching to forth generation mobile communication skill from the 5th generation mobile communication technology 5G system in user equipment (UE) During art 4G systems, the target carrying letter of the UE of access and the transmission of the first AMF modules of mobile management function to ps domain is received Breath, wherein the first AMF modules are located in the 5G systems；
Prearranged elements, for being that the UE reserves resource in wireless side according to the target carrying information received.
15. device according to claim 14, which is characterized in that the receiving unit includes：
First receiving module, the default bearer information sent for receiving the first AMF modules；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G Be in system during the UE establishes protocol Data Unit PDU sessions, conversation control function SMF modules generate with it is described The corresponding carrying informations used in the 4G systems of default quality of service stream Default Qos Flow of PDU sessions.
16. device according to claim 15, which is characterized in that the receiving unit further includes：
Second receiving module, the dedicated bearer information sent for receiving the first AMF modules；
Wherein, the target carrying information includes the default bearer information and the dedicated bearer information, the dedicated bearer Information is in the 5G systems when being that the UE establishes service-specific quality stream Dedicated Qos Flow, the SMF moulds The carrying information used in the 4G systems corresponding with the service-specific quality stream that block generates.
17. a kind of access and mobile management function to ps domain module, which is characterized in that including：
First processor；
First memory for storing the first processor executable instruction；
The first transmitting device for carrying out information transmit-receive communication according to the control of the first processor；
Wherein, the first processor is for performing the following operations：Know that cross-system switching occurs for user equipment (UE), wherein institute It refers to that the UE switches to forth generation mobile communication technology 4G systems from the 5th generation mobile communication technology 5G system to state cross-system switching System；During the UE switches to the 4G systems from the 5G systems, the target of the UE pre-saved is carried Information is sent to mobile management nodes function MME modules, wherein be located at the 4G systems in the MME modules be used for according to The target carrying information received is that the UE reserves resource in wireless side.
18. access according to claim 17 and mobile management function to ps domain module, which is characterized in that the first processor It is additionally operable to execute following operation：
Receive and preserve the default bearer information of the transmission of the conversation control function SMF modules in the 5G systems；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G It is that the SMF modules are generating with the PDU sessions in system during the UE establishes protocol Data Unit PDU sessions The corresponding carrying informations used in the 4G systems of default quality of service stream Defaul t Qos Flow.
19. a kind of mobile management nodes function module, which is characterized in that including：
Second processor；
Second memory for storing the second processor executable instruction；
The second transmitting device for carrying out information transmit-receive communication according to the control of the second processor；
Wherein, the second processor is for performing the following operations：In user equipment (UE) from the 5th generation mobile communication technology 5G system During system switches to forth generation mobile communication technology 4G systems, access and the first AMF modules of mobile management function to ps domain are received The target carrying information of the UE sent, wherein the first AMF modules are located in the 5G systems；According to what is received The target carrying information is that the UE reserves resource in wireless side.
20. mobile management nodes function module according to claim 19, which is characterized in that the second processor is also used The operation below executing：
Receive the default bearer information that the first AMF modules are sent；
Wherein, the target carrying information includes at least the default bearer information, and the default bearer information is in the 5G Be in system during the UE establishes protocol Data Unit PDU sessions, conversation control function SMF modules generate with it is described The corresponding carrying informations used in the 4G systems of default quality of service stream Default Qos Flow of PDU sessions.
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