CN102625405B - A kind of motion management method, gateway node and core network - Google Patents

Abstract

The invention discloses a kind of motion management method, gateway node and core network, between Service GPRS node in repositioning process, when the renewal PDP Context request determination that the former gateway node (GGSN) of terminal access is sent according to the new SGSN of terminal needs switching GGSN, the PDP Context of terminal is pushed to new GGSN, and new GGSN the first address information is notified into new SGSN；The new SGSN included in new PDP Contexts of the GGSN according to terminal address and TEID, the downlink data of terminal is sent to new SGSN；New SGSN sends the upstream data of terminal to new GGSN according to new GGSN the first address information.Using the achievable location management function of the present invention, support that the identity of terminal is separated with position, it is to avoid route is roundabout；And the uniformity of existing reorientation flow is not influenceed, thus with preferable feasibility.

Description

A kind of motion management method, gateway node and core network

Technical field

The present invention relates to mobile communication technology field, more particularly to a kind of motion management method, gateway node and core Network.

Background technology

Existing WCDMA（Wideband Code Division Multiple Access, referred to as WCDMA） System is to be currently based on important system and method that wireless WCDMA technologies realize service access.WCDMA core net framework is as schemed Shown in 1, including service GPRS（General Packet Radio Service, general packet radio service）Node（Serving GPRS Support Node, referred to as SGSN）, critical point GPRS nodes（Gateway GPRS Support Node, referred to as GGSN）With the home subscriber signing network element such as register, herein by 2G（Generation Mobile Telecommunication System technology）In homing position post Home subscriber server in storage (Home Location Register, referred to as HLR) and 3G（Home Subscriber Server, referred to as HSS）Home subscriber signing register is referred to as, is represented with HLR/HSS.Due to existing TD-SCDMA（Time Division-Synchronous Code Division Multiple Access, TD SDMA）Core network Using with WCDMA same architectures, following WCDMA system refers to WCDMA and TD-SCDMA.

SGSN is a basic composition network element of GPRS network, is to provide for gprs service and in global system for mobile telecommunications System（Globle System for Mobile Communication, referred to as GSM）The new net introduced in network Element device.The main routing forwarding for completing packet data package, mobile management, session management, Logical Link Management, authentication and plus The function such as close.

GGSN provides data message and nets route and the encapsulation between inner and outer portion's data network in WCDMA, plays gateway, it Adhere to the routing iinformation of user including PS, routing iinformation is used for the current attachment point data message tunnel to MS, i.e. SGSN.

HLR/HSS is used for the packet domain subscription data and routing iinformation for storing user.

The key property of mobile network is that the continuity that business is still kept during terminal is persistently moved is received and dispatched, Here it is handoff functionality.For WCDMA core nets, handoff functionality is in reorientation flow and 2G, 3G intersystem handover Realize, reorientation flow is discussed herein primarily, 2G, 3G intersystem handover problem are not related to.

Reorientation flow complete user make during business datum is used access path of the data in core net with Terminal location changes and changed, so as to ensure the continuity of business.Reorientation flow is most complicated in mobile communication core net Flow.It is related to data forwarding, the function of routing update.

Reorientation flow is divided into by the scene of generation：

- SRNS Serving Radio Network Subsystem (Service Radio Network Subsystem, SRNS) is relocated；

- direct-cut operation and SRNS reorientations in combination；

- cell/URA (UTRAN Registration Area, UTRAN registration area) associated update and SRNS are reset Position；

- Routing Area Update；

- SRNS reorientations are cancelled.

Service SRNS repositioning process

SRNS repositioning process is serviced only in MS（Terminal）In PMM-CONNECTED（Packet domain mobile management-connection） Performed during state, Iur interfaces are used to transmit control signaling and user data.

Servicing SRNS repositioning process is used in UTRAN（（Universal Terrestrial Radio Access Network, UMTS wireless access network）Side, from one " fixed resting position ", UTRAN is moved to from source RNC to Target RNC CN tie points.In this process, Iu links are reorientations.If Target RNC is connected to be connected with source RNC same On SGSN, then SGSN SRNS（SRNS Serving Radio Network Subsystem）Internal repositioning process is performed, and the process is not SGSN and cut Change.Otherwise, if Target RNC is connected on different SGSN from source RNC, need to do the service SRNS reorientations of SGSN handoff scenarios Process.

Fig. 2 a show source RNC（Serving RNC）The repositioning of RNC when on different SGSN is connected to Target RNC.Figure 2b show the situation after the completion of SRNS repositioning process and Routing Area Update process.

Service SRNS repositioning process and RA（Routing Area, Route Area）After renewal, MS is registered in new SGSN, MS PMM-CONNECTED states are in for new SGSN, Target RNC will be used as Serving RNC.

Service SRNS repositioning process is shown in Fig. 3 explanation（Based on the R6 versions of 3GPP TS 23.060）, including reset level Standby process, reorientation implementation procedure and reorientation complete process, it is specific as follows：

Step 301：Source RNC determines to initiate SRNS reorientations；

Step 302：Source RNC sends reorientation（Relocation Required）Message（Comprising reorientation type, reason, Source ID, Target id, source RNC to Target RNC Transparent Container etc.）To former SGSN, reorientation set-up procedure is initiated.

Wherein, source includes the necessary information of reorientation coordination, security functionality and RRC agreements to Target RNC Transparent Container Contextual information（Including UE capacity）.

Step 303：Former SGSN is according to Target cell ID, if it is determined that SRNS reorientations are the SRNS reorientations between SGSN, " forwarding re-positioning request (Forward Relocation Required) " message is sent to new SGSN, reorientation resource is initiated Assigning process.

Step 304a：New SGSN sends RELOCATION REQUEST message to Target RNC.

The RELOCATION REQUEST message includes permanent NAS（Non-Access Stratum）UE identifiers（Such as international mobile subscriber identity IMSI）, reason, CN domains indicator, source RNC to Target RNC transparent vessel and the RAB to be set（Radio Access Bearer, referred to as RAB）Deng.

Step 304b：Target RNC receive all necessary resources of RAB including Iu user planes into after the distribution of work, set up with it is new SGSN RAB carryings, sending re-positioning request confirms（Relocation Request Acknowledge）Message gives new SGSN；

Step 305：The resource that user data is transmitted between Target RNC and new SGSN has been distributed, and new SGSN has been After SRNS reorientation is ready, new SGSN sends " forwarding relocation response (Forward Relocation Response) " message is to original SGSN；So far, reorientation resource allocation process is successfully terminated.

Step 306：Former SGSN, which is sent, resets order of the bit (Relocation Command) message to new RNC, continues SRNS Reorientation；

Reorientation command messages include：The RAB the to be discharged and RAB restricted by data forwarding.Former SGSN is according to service Quality（Quality of Service, referred to as QoS）It is determined that the RAB restricted by data forwarding.

Step 307：Source RNC is received after reorientation command messages from ps domain, and log-on data repeating timer, source RNC is opened Begin forwarding data.

Data forwarding in SRNS reorientations should be performed by Iu interfaces, it is meant that between source SRNC and Target RNC Data exchange is replicated in the SRNC of source, and is sent at IP layers to Target RNC.

Step 308：When reorientation set-up procedure is by successful termination, and source RNC is ready, and source RNC, which passes through, sends " mesh RNC to the source RNC transparent vessels " RRC of middle offer is provided（Wireless heterogeneous networks）Message is to MS, the execution of triggering SRNS reorientations.

Above-mentioned RRC information such as can be physical channel reconfiguration message (Physical Channel Reconfiguration), UE information words and CN transparent vessels are carried in message.

Step 309：When receiving reorientation execution triggering, Target RNC should send relocation detect-message to new SGSN. When relocation detect-message is sent, Target RNC should start source RNC operations.

Step 310：Target SRNC sends RAN mobility informations, including Location Area Identification and route cell mark to source RNC Know etc., also including the sequence number between terminal and SRNC.Receive after this information, terminal starts to send upper line number to Target RNC According to bag.

Terminal is completed after reconfiguring, and RAN mobility information confirmation messages are sent to Target RNC, and notifying Target RNC, it has done Receive the preparation of downlink data well.

Step 311：Target SRNC initiates to relocate complete process by sending reorientation completion message to new SGSN.

Step 312：If SRNC reorientations are the reorientations between SGSN, new SGSN sends forwarding reorientation completion message To former SGSN.Former SGSN returns to the confirmation to the reorientation completion message of forwarding.

Step 313：If SRNS reorientations are the reorientations between SGSN SRNS, new SGSN, which is sent, updates PDP （Packet Data Protocol Context, packet data protocol）Context request message（New SGSN addresses, SGSN tunnels Endpoint identifier, discusses and decides QoS）To related GGSN.GGSN updates their PDP Context field, and returns to renewal PDP Context (Update PDP Context Response) message is responded, GGSN tunnel endpoint identifiers etc. are carried.

Step 314：Receive after forwarding reorientation completion message, former SGSN sends Iu release commands（Iu Release Command）Message gives source RNC, when RNC data forwarding timers expire, and source RNC responds an Iu releases and completes (Iu Release Complete) message；

Step 315：MS is completed after re-configuration process, if new Routing Area Identifier and in the past different, MS can be initiated Routing Area Update process.

Routing Area Update process is in order to which the current positional informations of MS are registered in into new SGSN, and by new SGSN information updatings Into HLR.Routing Area Update part in this flow is a subset of the RA renewal processes of execution, because MS is in PMM- CONNECTED states.

Joint direct-cut operation and SRNS repositioning process

Joint direct-cut operation and SRNS relocate between RNC without Iur interfaces, and the process only MS be in packet domain shifting Performed during dynamic management-connection (PMM-CONNECTED) state.

When joint direct-cut operation and SRNS repositioning process are used to perform the direct-cut operation determined by UTRAN, in UTRAN sides from source UTRAN is moved to CN by RNC to Target RNC（Core net）Tie point.In this process, Iu links are relocated.If mesh Mark RNC and source RNC is connected on same SGSN, then the repositioning process inside SGSN SRNS is performed.If Target RNC connects The SGSN being connected to is different from the SGSN that source RNC is connected to, then the SRNS repositioning process between SGSN is performed.Perform this process Followed by perform the Routing Area Update process between SGSN.

Cell/URA associated updates and SRNS repositioning process

This process only performs for the MS in PMM-CONNECTED states, and Iur carries control signaling but do not used here User data.

Cell/URA associated updates and SRNS are relocated for when execution cell is reselected in utran, in UTRAN sides UTRAN is moved into CN tie points from source SRNC to Target RNC.In this process, Iu links are relocated.

Routing Area Update

Expired when the MS of attachment detects it and has been enter into new RA or periodicity RA and update timer, need to just carry out Route Area more Newly.

SGSN is by having found that it also manages preceding RA, and it is Routing Area Update inside SGSN to detect it.In this case, SGSN has MS necessary information, thus need not be new MS position informing GGSN or HLR, so GGSN switchings will not be done, no It is the content of this patent, this patent describes the Routing Area Update between SGSN-spanning.In Routing Area Update between SGSN-spanning, only MS Not in PMM connection status, new SGSN just sends PDP Context to GGSN and updates request, and in PMM connection status, PDP Context is more Change request to complete in service SRNS repositioning process or joint direct-cut operation and SRNS repositioning process.

Routing Area Update flow is shown in Fig. 4（Based on the R6 versions of 3GPP TS 23.060）, it is specific as follows：

Step 401, if RRC connections are not set up also, RRC connections are set up.MS sends Routing Area Update request message (P-TMSI, preceding RAI, preceding P-TMSI signature, updating type, Follow on Request) arrives new SGSN.

Step 402, if RA renewals are the Routing Area Updates between SGSN, and in PMM-IDLE before MS（Packet domain is moved Dynamic management-free time）State, new SGSN sends SGSN context request messages（Preceding P-TMSI, preceding RAI, preceding P-TMSI signature）Arrive Former SGSN, obtains MS MM and PDP Context.

Step 402a, former SGSN to source SRNS send SRNS context request messages, and obtain SRNS context requests should Answer.

Step 403, former SGSN sends SGSN context request responses to new SGSN.

Step 404, safe handling function.

Step 405, if it is Routing Area Update between SGSN that RA, which updates, new SGSN send SGSN contexts confirm message to Former SGSN.

Step 406, former SGSN sends data forwarding order to source SRNS.

Step 407, if having the data of caching in step 402a, source SRNS, then source SRNS forwards data to former SGSN.

Step 408, former SGSN forwards data to new SGSN.

Step 409, if it is Routing Area Update between SGSN that RA, which updates, and MS is not in PMM connection status, new SGSN to Former GGSN, which is sent, updates PDP Context request（Also referred to as PDP Context change request）Message, former GGSN is sent to new SGSN PDP Context changes response.

Step 410, if RA renewals are the RA renewals between SGSN, new SGSN, which passes through, sends more new position（SGSN numbers, SGSN addresses, IMSI）To HLR, SGSN change is notified HLR.

Step 411, if RA renewals are the RA renewals between SGSN, HLR sends canceling position（Cancel Location） （IMSI, cancels type）Original Iu resources are discharged to former SGSN, former SGSN.

Step 412, if RA renewals are the Routing Area Updates between SGSN, HLR sends insertion user data（IMSI, signing Data）Message gives new SGSN.

Step 413, if RA renewals are the RA renewals between SGSN, HLR is by sending Update Location Ack (IMSI) confirmed to new SGSN.

Step 414 to step 419 is wireless side routing update process.

Industry is currently suggested a variety of new mobile management technologies, and its essential idea is user identity and position separation skill Art.Existing relevant identity and position separation in the prior art（Subscriber Identifier & Locator Separation Network, SILSN）Solution, the realization such as HIP technologies, and based on router of such as Intrusion Detection based on host Realization such as location identity separated protocol (LISP) technology, in every kind of realization again have correlation multiple technologies be supported, these The identity of terminal user in scheme（AID is expressed as in text）Do not change in moving process, according to the position of terminal separately Dispensing position is identified（RID is expressed as in text）To realize route and the forwarding of data message.

Fig. 5 shows the network architecture of a kind of identity and position separation (SILSN), and the network of the SILSN frameworks is opened up Flutter to be divided into and there is no overlapping access network and backbone network on topological relation, access network is located at the edge of backbone network, is responsible for all ends The access at end, backbone network is responsible for route and the forwarding of the inter-terminal data message of access.In network, AID as terminal user Identity, remains constant in terminal moving process；RID is the station location marker that network is terminal distribution, in backbone network Use.It should be noted that identity and station location marker can have different titles in different SILSN frameworks, but essence is The same.

In SILSN frameworks, terminal can be the one or more in mobile terminal, fixed terminal and roam terminals, such as hand Machine, landline telephone, computer and server etc..

In SILSN frameworks, access network is used to provide two layers for terminal（Physical layer and link layer）Access means, maintenance terminal Physics access link between ASR.

In SILSN frameworks, the main network elements of backbone network include：

Access service router (Access Service Router, ASR) is the edge router of backbone network, for for Terminal distribution RID, the AID-RID map informations of maintenance terminal, the AID-RID that terminal is registered and inquired about to ILR binds pass System, and realize route and forwarding of data message etc..Terminal must access backbone network by ASR.ASR is the RID of terminal distribution Address information comprising the ASR, points to this ASR in other words, during using the RID as the destination address of data message, the datagram Text will be routed to the ASR.

Generic router（Common Router, CR）, the core router of backbone network, for according in data message RID carries out routing, forwards the data message using RID as purpose address.

Identity position register（Identity Location Register, ILR）, ILR is for preserving and safeguarding ownership AID-RID map informations are also written as in the identity of user terminal and station location marker map information, text, are handled to terminal location Registration, go to register and inquire about；

Alternatively, backbone network can also include：

Interconnection services node (Internet Service Router, ISR), with traditional IP, ASR and ILR Interface, for realizing interconnecting for identity, locator separation network and traditional IP.

As can be seen that ASR is in order to realize the normal forwarding of message, it is necessary to be terminal distribution RID when terminal is accessed, and Need to ILR to register the AID and RID of the user binding, with the RID for the binding for updating the terminal in ILR.In an example In, ASR is each terminal maintenance terminal to client information（The alternatively referred to as link information of terminal and Correspondent Node, or terminal With the correspondence information of Correspondent Node）, wherein the correspondence relationship information comprising terminal AID and its Correspondent Node AID, may be used also With the AID-RID map informations including the terminal.

WCDMA system can provide the user polytype service application, but there is also much using it is upper the problem of, Such as：

GGSN is constant, there is route roundabout.Terminal is during once connecting and using business, and GGSN keeps constant. So in the case where user is moved, it is possible to move on to apart from GGSN is far and the place nearer apart from service source so that Cause path roundabout, cause transmission resource waste, time delay elongated.

Using static publicly-owned address as the IP address of terminal, there can be considerable restraint to the mobility of user.It is static publicly-owned IP address, can only be out from fixed gateway due to route planning.Once it is moved to far place, it is impossible to regard to proximity Enter external network.Inevitably cause route roundabout, cause transmission resource waste, time delay elongated.

The content of the invention

Present invention solves the technical problem that being to provide a kind of motion management method, gateway node and core network, realize Support the mobile management of core net under identity and position separation, it is to avoid route is roundabout.

In order to solve the above technical problems, the invention provides a kind of motion management method,

Between Service GPRS node (SGSN) in repositioning process, the former gateway node (GGSN) of terminal access is according to described When renewal packet data protocol (PDP) context request that the new SGSN of terminal is sent determines to need switching GGSN, by the end The PDP Context at end is pushed to the new GGSN, and the first address information of the new GGSN is notified into the new SGSN；

The address for the new SGSN that the new GGSN is included in the PDP Context according to the terminal and endpoint of a tunnel mark Know symbol (TEID), the downlink data of the terminal is sent to the new SGSN；

The new SGSN sends the up of the terminal according to the first address information of the new GGSN to the new GGSN Data.

Further, the ground for the new SGSN that the former GGSN is included in being asked according to the renewal PDP Context Location, is locally configured or inquire about the off-site server acquisition new GGSN the second address information by inquiry, and according to getting Second address information send PDP Context PUSH message to the new GGSN, the PDP Context of the terminal is pushed To the new GGSN；

The new GGSN is received after the PDP Context PUSH message, and sending PDP Context push to the former GGSN should Answer.

Further, whether the new GGSN sends PDP Context and pushes to include in response and receive to the former GGSN The instruction of switching.

Further, the ground for the new SGSN that the former GGSN is included in being asked according to the renewal PDP Context Location, determines the need for switching GGSN according to the information on load of local policy, and/or the new GGSN.

Further, the new GGSN is received after the PDP Context PUSH message, if receiving switching, in hair The PDP Context sent pushes the first address information for including the new GGSN in response；

The former GGSN receives PDP Context and pushed after response, and the first address information of the new GGSN is included in into hair New SGSN renewal PDP Context is sent to be notified in responding to the new SGSN.

Further, first address information includes the chain of command and medium surface IP address of the new GGSN, control Face and medium surface TEID；

The former GGSN rings the PDP Context when sending the renewal PDP Context response to the new SGSN The GGSN included in answering address information extends this as the first address information of the new GGSN.

Further, if the terminal needs GGSN to carry out PDU sequence numbers to protocol Data Unit (PDU) packet Sort, then the new GGSN also forwards TEID, interim PDU sequences in the PDP Context of transmission pushes response comprising interim Row number；

The former GGSN pushes the instruction for whether receiving switching included in response according to the PDP Context, if institute State new GGSN and receive switching, then the former GGSN sends PDP Context handover request to the new GGSN, includes the terminal Up-downgoing PDU sequence numbers.

Further, the former GGSN issues the terminal using the interim forwarding TEID to the new GGSN Data.

Further, the former GGSN is transmitted to the data of the new GGSN using the interim PDU sequence numbers sequence.

Further, the body of the terminal is also included in the PDP Context PUSH message that the former GGSN is sent Part mark (AID)；

The new GGSN is received after the PDP Context PUSH message, is that the terminal distribution points to the new of this GGSN Route location identifies (RID).

Further, the new GGSN be the new RID of the terminal distribution be second address information or New GGSN other address informations described in person.

Further, the former GGSN obtains the new RID in the following way：

Mode one, the new GGSN will be notified to the former GGSN for the new RID of the terminal distribution；

Mode two, the second address letter for the new GGSN that the former GGSN is arrived according to the address acquisition of the new SGSN Breath, the new RID of as described terminal.

Further, ownership identity position register (ILR) from the former GGSN of new GGSN or described to the terminal RID registration requests are sent, the new RID is carried, the ownership ILR of the terminal updates the RID of the terminal preserved.

Further, the former GGSN is according to the address of the new SGSN, and inquiry, which is locally configured, obtains the new GGSN The second address information the step of, be specially：

The local static configuration SGSN of GGSN and GGSN mapping tables, the former GGSN is according to the address search institute of the new SGSN State the second address information that mapping table gets the new GGSN.

Further, methods described also includes：

The former GGSN is got behind the new RID addresses of the terminal, according to the terminal of maintenance to client information and The AID-RID map informations of the Correspondent Node of the terminal find the RID of Correspondent Node, are accessed to the Correspondent Node GGSN sends RID update notifications, carries the AID and new RID of the terminal.

Further, the former GGSN is received after the response that all AID-RID map updatings are notified, and/or is being set Repeating timer expire after, stop issuing the data of the terminal to the new GGSN.

Further, the former GGSN is stopping to after the new GGSN forwardings, is sent to the new GGSN and stops turning Send out message；

The new GGSN receive it is described stop forwarding after message, delete the interim forwarding TEID of distribution, and/or interim PDU sequence numbers.

Further, methods described also includes：

The former GGSN is got behind the new RID addresses of the terminal, and sending RID to interconnection services node (ISR) updates Notify, carry the AID and new RID of the terminal.

Further, methods described also includes：

In the repositioning process, the former GGSN is by the terminal of maintenance to client information and/or the terminal The AID-RID map informations of Correspondent Node are sent to the new GGSN；

The new GGSN preserve the terminal that receives to client information and/or the AID- of the Correspondent Node of the terminal RID map informations.

Further, after the new GGSN is the new RID of the terminal distribution, according to the terminal for preserving and safeguarding To client information and/or the AID-RID map informations of the Correspondent Node of the terminal, the RID of Correspondent Node is found, to described The GGSN of Correspondent Node access sends RID update notifications, carries the AID and new RID of the terminal；And/or, send RID to ISR Update notification, carries the AID and new RID of the terminal.

Further, the new GGSN receive the terminal of the former GGSN transmission to client information and/or described After the AID-RID map informations of the Correspondent Node of terminal, check that the Correspondent Node received is sent to the data message of the terminal In source AID, such as find that new Correspondent Node and/or RID update failed Correspondent Node, then accessed to these Correspondent Nodes GGSN send and/or retransmit RID update notifications, and by the AID of new Correspondent Node be registered in the terminal in client information.

Further, methods described also includes：In the repositioning process, the former GGSN receive be sent to it is described After the data message of terminal,

The data message is sent to source wireless side network element by the former GGSN through former SGSN, and passes through the source wireless side Forwarding channel between network element and Target Wireless side network element is forwarded to Target Wireless side network element, by Target Wireless side network element Issue the terminal；Or,

The former GGSN by the former GGSN of the data message through being set up in the repositioning process with it is described new Forwarding channel between GGSN is sent to the new GGSN, and the new GGSN again sends the data message through the new SGSN Target Wireless side network element is given, the terminal is sent to by Target Wireless side network element.

Further, methods described also includes：

The new GGSN receives after the data message of the terminal Correspondent Node i.e. in terminal described in local maintenance AID-RID map informations, and after the AID-RID map informations of Correspondent Node of former GGSN transmission are received, described in receiving The AID-RID map informations of the AID-RID map informations of Correspondent Node and the Correspondent Node of local maintenance merge.

Further, methods described also includes：

The former GGSN is when safeguarding to client information, by flowing real-time testing mechanism and/or checking the data of the terminal Source RID in message and source AID is come the Correspondent Node that finds new Correspondent Node or need to delete, by the AID of new Correspondent Node And RID is registered in the AID-RID map informations to client information and Correspondent Node of the terminal, the opposite end of the terminal is believed The AID for the Correspondent Node deleted is needed to delete in breath.

Further, methods described also includes：

During the Routing Area Update that the terminal is initiated after the completion of the repositioning process, to the terminal attaching The GGSN addresses that the terminal is accessed are updated to the address of the new GGSN by signing register (HLR/HSS).

Further, methods described also includes：

GGSN or ISR to terminal attaching ILR inquire about the terminal AID corresponding RID when, the terminal attaching ILR is returned The RID of the terminal；Meanwhile, the terminal attaching ILR records initiate the GGSN or ISR of inquiry；

When the RID for knowing the terminal changes, the terminal attaching ILR notifies all to initiate inquiry Terminal RID change described in GGSN, ISR.

Further, methods described also includes：

The terminal is linked into after the new GGSN, and the former GGSN or new GGSN are using the mode of broadcast by the terminal RID change notifications all GGSN, ISR.

Further, the repositioning process at least includes：

SRNS Serving Radio Network Subsystem (SRNS) repositioning process；Or,

United direct-cut operation and SRNS repositioning process；Or,

Cell/URA associated updates and SRNS repositioning process；Or,

Routing Area Update process.

It is many applied to WCDMA (WCDMA) or time division synchronous code division present invention also offers a kind of gateway node Location (TD-SCDMA) network, the gateway node (GGSN) includes：

Control module is cut out, incision terminal is directed to for what is sent according to the new SGSN received in repositioning process between SGSN Renewal PDP Context request determination when needing switching GGSN, the PDP Context of the terminal is pushed to the terminal and cut New GGSN, and the first address information of the new GGSN is notified into the new SGSN；

Control module is cut, after the PDP Context for receiving the terminal that the former GGSN that terminal is cut out is pushed, root The new SGSN included in PDP Context according to the terminal address and TEID, are sent to described to the new SGSN The downlink data of terminal.

Further, the gateway node also includes：

GGSN selecting modules are cut, for receiving after the renewal PDP Context request, according to local policy, and/or institute The information on load for stating new GGSN determines the need for switching GGSN, and the GGSN that selection is cut.

Further, the control module that cuts out is used for, according to being included in the renewal PDP Context request New SGSN address, obtains described by SGSN and the GGSN mapping table or inquiry off-site server of inquiring about local static configuration New GGSN the second address information, sends PDP Context to the new GGSN according to second address information got and pushes away Message is sent, the PDP Context of the terminal is pushed to the new GGSN；

The incision control module is used for, and receives after the PDP Context PUSH message, and PDP is sent to the former GGSN Context pushes response, and the instruction for whether receiving switching is included in the PDP Context pushes response.

Further, the incision control module is additionally operable to, and is received after the PDP Context PUSH message, if connect Switched, then the first address information of the new GGSN is also included in the PDP Context push response of transmission；

The control module that cuts out is additionally operable to, and is received PDP Context and is pushed after response, by the first address of the new GGSN Information is included in the renewal PDP Context response for send new SGSN and notified to the new SGSN；

Wherein, first address information includes chain of command and medium surface IP address, chain of command and the matchmaker of the new GGSN Honorable TEID.

Further, the control module that cuts out is additionally operable to, and the renewal PDP Context is being sent to the new SGSN During response, the GGSN included during the PDP Context is responded address information extends this as the first address letter of the new GGSN Breath.

Further, the gateway node also includes RID distribute modules, and AID-RID mapped cache modules；

The RID distribute modules are used for, and this GGSN new RID is pointed to for incision terminal distribution, distribution it is described new RID is second address information or other address informations of the new GGSN；

The AID-RID mapped caches module is used for, and preserves the incision terminal AID and the new RID map information.

Further, the gateway node also includes RID Registering modules,

The RID Registering modules are used for, and are pointed to for incision terminal distribution after this GGSN new RID, to the terminal Belong to ILR and send RID registration requests, carry the new RID, notify that the ownership ILR of the terminal updates the end preserved The RID at end；

Or, according to the new RID for cutting out terminal of acquisition, RID registration requests are sent to the ownership ILR of the terminal, The new RID is carried, notifies that the ownership ILR of the terminal updates the RID of the terminal preserved.

Further, the RID distribute modules are additionally operable to, and the new RID of distribution is notified to the former GGSN；

The RID Registering modules are used for, the new RID notified according to the RID distribute modules, obtain the terminal New RID；Or, the new RID of terminal is cut out described in acquisition in the following way：According to the address acquisition of the new SGSN The new GGSN arrived the second address information, the new RID of as described terminal.

Further, the gateway node also includes opposite end maintenance of information module,

The opposite end maintenance of information module is used for, in the data message by flowing real-time testing mechanism and/or inspection terminal Source RID and source AID come the Correspondent Node that finds new Correspondent Node or need to delete, the AID and RID of new Correspondent Node are stepped on In the AID-RID map informations to client information and Correspondent Node for remembering the terminal, by the terminal to being needed in client information The AID of the Correspondent Node of deletion is deleted；And,

In repositioning process, by maintenance cut out terminal to client information and/or the Correspondent Node of the terminal AID-RID map informations are sent to new GGSN, or, preserve the incision terminal that receives to client information and/or the terminal The AID-RID map informations of Correspondent Node.

Further, the gateway node also includes RID update notification modules,

The RID update notifications module is used for, and after for the new RID of incision terminal distribution, or is receiving the RID points Cut out with what module was notified after the new RID of terminal,

Mapped and believed according to the AID-RID to client information and the Correspondent Node of the terminal for the terminal for preserving and safeguarding Breath, finds the RID of Correspondent Node, and the GGSN accessed to the Correspondent Node sends RID update notifications, carries the terminal AID and new RID；And/or, RID update notifications are sent to ISR, the AID and new RID of the terminal is carried.

Further, the opposite end maintenance of information module is used for, and receives pair of the terminal of the former GGSN transmission After the AID-RID map informations of client information and the Correspondent Node of the terminal, check that the Correspondent Node received is sent to the end Source AID in the data message at end, such as has found new Correspondent Node and/or the failed Correspondent Node of RID renewals, then to these The GGSN of Correspondent Node access is sent and/or retransmits RID update notifications, and the AID of new Correspondent Node is registered in into the terminal To in client information.

Further, the gateway node also sets up module and data forwarding module including forwarding channel,

The forwarding channel, which sets up module, to be used for, to cut out the forwarding channel that terminal is set up between original GGSN and new GGSN；

The data forwarding module is used for, and after receiving and issuing and cut out the data message of terminal, is sent out through the forwarding channel To the new GGSN；Or, after the data message for receiving incision terminal from the forwarding channel, institute is sent to through the new SGSN Target Wireless side network element is stated, the terminal is sent to by Target Wireless side network element.

Further, the gateway node also includes data forwarding module,

The data forwarding module is used for, and after receiving and issuing and cut out the data message of terminal, source is sent to through former SGSN Wireless side network element, and by the forwarding channel between the source wireless side network element and Target Wireless side network element be forwarded to the target without Line side network element, the terminal is issued by Target Wireless side network element.

Further, the opposite end maintenance of information module is additionally operable to, and is received after the data message of incision terminal i.e. at this The AID-RID map informations of the Correspondent Node of the terminal are safeguarded on ground, and in the AID- for the Correspondent Node for receiving former GGSN transmission After RID map informations, by the AID-RID map informations of the Correspondent Node received and the AID- of the Correspondent Node of local maintenance RID map informations merge.

Further, the control module that cuts out is additionally operable to, and the terminal is initiated after the completion of the repositioning process Routing Area Update during, to signing register (HLR/HSS) GGSN that accesses the terminal of the terminal attaching Location is updated to the address of the new GGSN.

Present invention also offers a kind of core network, the core network includes foregoing gateway node, also including SGSN And ILR, wherein：

The SGSN is used for, between SGSN in repositioning process, is sent to the former GGSN of terminal and updates PDP Context request Afterwards, according to the former GGSN received the new GGSN notified the first address information, the terminal is sent to the new GGSN Upstream data；

The ILR is used for, and stores the AID-RID mapping relations of terminal, receives inquiry, registration that GGSN or ISR initiate, more Change, delete the request of AID-RID mapping relations.

Further, the ILR is additionally operable to, and is received GGSN or ISR and is inquired about asking for the corresponding RID of the terminal AID When asking, the RID of the terminal is returned according to the AID-RID mapping relations of the terminal of storage；Meanwhile, record initiates inquiry GGSN or ISR；

When the RID for knowing the terminal changes, the ILR is notified described in all GGSN, ISR for initiating inquiry Terminal RID change.

Further, the ILR is additionally operable to, and is terminal distribution AID, and supports GGSN using terminal international mobile subscribers Identification code (IMSI) inquires about the AID of terminal.

The above-mentioned motion management method based on WCDMA core nets and corresponding GGSN and WCDMA core nets are except can be real Outside existing location management function, it can support that the identity of terminal is separated with position, it is to avoid route is roundabout.And can try one's best base In existing reorientation flow, the uniformity of existing reorientation flow is not influenceed, thus with preferable feasibility.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the Organization Chart of existing WCDMA system packet domain；

Fig. 2 a are the schematic diagram before service SRNS reorientations and Routing Area Update；

Fig. 2 b are the schematic diagram after service SRNS reorientations and Routing Area Update；

Fig. 3 is the flow chart of existing SRNS repositioning process；

Fig. 4 is the flow chart that existing route area updates；

Fig. 5 is a kind of schematic diagram of the SILSN network architectures；

Fig. 6 has the schematic diagram of the WCDMA core net frameworks of SILSN frameworks for the present invention；

Fig. 7 is the method flow schematic diagram for being used to service SRNS reorientations of the embodiment of the present invention one；

Fig. 8 is the method flow schematic diagram that united direct-cut operation and SRNS are relocated that is used for of the embodiment of the present invention two；

Fig. 9 is the method flow signal that cell/URA associated updates and SRNS are relocated that is used for of the embodiment of the present invention three Figure；

Figure 10 is the method flow schematic diagram for Routing Area Update of the embodiment of the present invention four.

Embodiment

In order to solve the above-mentioned technical problem, the present invention provides a kind of realization of the mobile management based on WCDMA core nets Method.It should be noted that because TD-SCDMA core network architectures are consistent with wcdma core network framework, the present invention program Equally applicable in TD-SCDMA core networks, WCDMA systems as described below refer to WCDMA and TD-SCDMA.

The motion management method that the present invention is provided, mainly includes：

Between SGSN in repositioning process, the former gateway node (GGSN) of terminal access is sent out according to the new SGSN of the terminal When the renewal PDP Context request determination sent needs switching GGSN, the PDP Context of the terminal is pushed to described new GGSN, and the first address information of the new GGSN is notified into the new SGSN；

The address for the new SGSN that the new GGSN is included in the PDP Context according to the terminal and TEID, to institute State the downlink data that new SGSN is sent to the terminal；

The new SGSN sends the up of the terminal according to the first address information of the new GGSN to the new GGSN Data.

Afterwards, the terminal is linked into new GGSN, and the packet data network of outside is connected to by new GGSN.

In the above method, the ground for the new SGSN that the former GGSN is included in being asked according to the renewal PDP Context Location, according to local policy, and/or（Got from external server）The information on load of the new GGSN determines the need for cutting Change GGSN.

In the above method, the address for the new SGSN that the former GGSN is included in being asked according to the renewal PDP Context leads to Cross inquiry and be locally configured or inquire about the second address information that off-site server obtains the new GGSN, and according to the institute got State the second address information and send PDP Context PUSH message to the new GGSN, the PDP Context of the terminal is pushed to institute State new GGSN；

The new GGSN is received after the PDP Context PUSH message, and sending PDP Context push to the former GGSN should Answer, the instruction for whether receiving switching is included in the PDP Context pushes response.

Further, if the new GGSN receives switching, also wrapped in the PDP Context of transmission pushes response The first address information containing the new GGSN, first address information includes new GGSN medium surfaces and chain of command IP address, media Face and chain of command TEID（Tunnel Endpoint Identifier, tunnel endpoint identifier）；

The former GGSN receives PDP Context and pushed after response, and the first address information of the new GGSN is included in into hair New SGSN renewal PDP Context is sent to be notified in responding to the new SGSN.

In the above method, former GGSN obtains new GGSN the second address information（New GGSN IP address can only be included）'s Step can be：

Mode one, GGSN static configurations SGSN and GGSN mapping tables, according to new SGSN address search, the table is obtained former GGSN Obtain new GGSN the second address；

Mode two, former GGSN obtains new GGSN the second address according to new SGSN Address locator server.

Above-mentioned changing method can also have the characteristics that：

The new GGSN is the new station location marker (RID) of the terminal distribution, and the RID is informed into former GGSN, former GGSN are preserved The terminal identity identifies (AID) and the new RID map information, and for data forwarding, or RID registrations and notice opposite end are more The RID of new terminal.

The former GGSN or new GGSN send RID registration requests to the terminal attaching identity position register (ILR), and carrying should New RID, terminal attaching ILR update the RID of the terminal preserved.

The above method may also include：Former GGSN preserve and safeguard the terminal to client information, the opposite end packet contains the end Hold AID and the AID of the Correspondent Node of the terminal correspondence relationship information；In handoff procedure, former GGSN is by the terminal of maintenance Opposite end information transmission to the new GGSN；Former GGSN or new GGSN are searched according to the AID to Correspondent Node in client information of terminal The address information of the gateway accessed to the Correspondent Node, the gateway accessed to the Correspondent Node sends RID update notifications, and carrying should Terminal AID and new RID.

The above method may also include：Former GGSN preserves the AID-RID map informations of the simultaneously Correspondent Node of maintenance terminal；At this In handoff procedure, the AID-RID map informations of the Correspondent Node of the terminal of maintenance are sent to new GGSN, new GGSN by former GGSN After the data message of the terminal is received i.e. the local maintenance terminal Correspondent Node AID-RID map informations, and receiving After the AID-RID map informations transmitted to former GGSN, map information and local maintenance the AID-RID map informations will be received Merge.

The above method may also include：In handoff procedure, former GGSN is received after the data message for issuing the terminal, through original SGSN issues source wireless side network element, and the data message is by the forwarding channel quilt between source wireless side network element and Target Wireless side network element Target Wireless side network element is forwarded to, terminal is issued by Target Wireless side network element；Or, in handoff procedure, set up original GGSN with Forwarding channel between new GGSN, former GGSN is received after the data message for issuing terminal, issues new GGSN through forwarding channel, newly The data message is issued Target Wireless side network element by GGSN through new SGSN again, and terminal is issued by the Target Wireless side network element.

In the above method, the mode that former GGSN obtains the new RID of terminal can be：

Mode one, new GGSN gives terminal distribution RID, and former GGSN is sent to by message；

Mode two, former GGSN obtains new GGSN according to new the SGSN local static configuration of address search or lookup server Address, this address is RID.

The above method can also have the characteristics that：After former GGSN gets RID addresses of the new GGSN to terminal distribution, root Correspondent Node is found according to the AID-RID map informations to client information and the Correspondent Node of the terminal of the terminal of maintenance RID, the gateway accessed to the Correspondent Node（GGSN）RID update notifications are sent, the AID and new RID of the terminal is carried.

The above method can also have the characteristics that：After former GGSN obtains RID addresses of the new GGSN to terminal distribution, to ISR sends RID update notifications, carries the AID and new RID of the terminal.

The above method can also have the characteristics that：Former GGSN is when setting up the forwarding channel with new GGSN or in the forwarding After Path Setup, just the AID-RID map informations to client information and/or the terminal communication opposite end of the terminal are sent to newly GGSN, new GGSN are that the AID to Correspondent Node in client information come according to transmission inquires the RID of Correspondent Node, are led to described Believe that the gateway of opposite end access sends RID update notifications, carry the AID and new RID of the terminal.

The above method may also include：Former GGSN is by new GGSN address and TEID（Including chain of command and medium surface）Information makes New SGSN, new SGSN is given to receive after the message, terminal is sent using new GGSN address and TEID with original message informing Upstream data bag be sent to new GGSN.

The above method may also include：New SGSN address and TEID information are sent to new GGSN by former GGSN, and new GGSN will The downlink message for being sent to terminal is sent to new SGSN, and new SGSN is then forwarded to terminal.

The above method may also include：Former GGSN and new GGSN sets up forwarding channel, after the forwarding channel is set up, and former GGSN will The message for being sent to terminal received is forwarded to new GGSN by the forwarding channel, and new GGSN is sent to target by new SGSN again Wireless side network element；If the packet between GGSN and terminal needs sequence number, new GGSN will need to be sent to the lower line number of terminal Sequence number is stamped according to bag.

The above method may also include：New GGSN receive that former GGSN transmission comes to client information after, check that original GGSN forwardings are next The data message for issuing terminal in Correspondent Node AID, such as find that new Correspondent Node and/or RID update failed logical Believe opposite end, the gateway accessed to these Correspondent Nodes（GGSN）Send and/or retransmit RID update notifications, and by new communication pair The AID at end be registered in the terminal in client information.

The above method may also include：Former GGSN is received after the response that all AID-RID map updatings are notified, and/or is being set After the repeating timer put expires, stop issuing the data of the terminal to the new GGSN.

The above method may also include：The former GGSN is stopping to after the new GGSN forwardings, is sent to the new GGSN Stop forwarding message；

The new GGSN receive it is described stop forwarding after message, delete the interim forwarding TEID of distribution, and/or interim PDU（Protocol Data Unit, protocol Data Unit）Sequence number.

The above method may also include：During the Routing Area Update that reorientation complete process terminal is initiated, to the terminal The GGSN addresses that the terminal is accessed are updated to the address of the new GGSN by the signing register (HLR/HSS) of ownership.

The above method can also have the characteristics that：Former GGSN passes through the opposite end datagram received when safeguarding to client information Source RID and the source AID of text has found new Correspondent Node, and the AID and RID of new Correspondent Node are registered in into the opposite end of the terminal In information and AID-RID map informations.

The above method can also have the characteristics that：Former GGSN safeguard to client information when, by flow real-time testing mechanism and/ Or the AID in the data message of the terminal is checked the Correspondent Node that finds new Correspondent Node or need to delete, by new communication The AID that the AID of opposite end is registered in the Correspondent Node to that in client information, will need deletion in this pair of client information of the terminal is deleted.

The above method can also have the characteristics that：Using ILR registration notification mechanism, i.e., GGSN, ISR inquire about ILR on During the corresponding RID of terminal AID, ILR returns to the RID of terminal；Meanwhile, ILR records initiate ASR, ISR of the inquiry, when the terminal When RID changes, ILR notifies all ASR, the ISR for initiating inquiry terminals RID change.

The above method can also have the characteristics that：When ASR, ISR negligible amounts（Network size is smaller）, terminal switching After GGSN, former GGSN or new GGSN send terminal RID change to all GGSN, ISR using the mode of broadcast.

Correspondingly, the present invention also provides a kind of core net, including critical point GPRS nodes (GGSN), Service GPRS node (SGSN) and home subscriber signing register (HLR/HSS), the core net also include identity position register (ILR), internet Service router（ISR）Deng, wherein：

The SGSN is arranged to：The function phase having with existing WCDMA is same；

The GGSN is set to cut the new station location marker (RID) of terminal distribution, and preserves the identity of the incision terminal Identify the map information between (AID) and new RID；

The GGSN is also configured to：RID registration requests are sent to the ILR of terminal attaching, the new of the incision terminal is carried RID, so that the ILR of the incision terminal attaching updates the RID of the incision terminal preserved；

The GGSN is also configured to：After terminal switches, other GGSN, ISR, terminal RID change can be notified.

The GGSN is also configured to：In switching or in a period of time, the data that being sent to of receiving can be cut out to terminal turn It is sent to the GGSN of terminal incision.

GGSN may include：Control module is cut out, it can be set to when terminal is cut out, the PDP Context and sequence of terminal The relevant informations such as row number are sent to the GGSN of terminal incision；The address for the GGSN that terminal is cut notifies the SGSN of terminal incision；More New ILR and the change for notifying the terminal RID such as GGSN, ISR；Packet forwarding module is called, the data message for being sent to terminal is arrived The GGSN of terminal incision；After certain time, the resource for cutting out terminal distribution is released to；

Control module is cut, it can be set to：After the re-positioning request for the GGSN transmissions that terminal is cut out is received, call RID distribute modules, for incision terminal distribution RID；Meanwhile, the PDP set up for the incision terminal between new SGSN is carried（GGSN IP address, TEID）；The GGSN that terminal is cut out will be sent to for the above- mentioned information for cutting terminal distribution.

RID distribute modules, it can be set to the new RID that this GGSN is pointed to for incision terminal distribution, preserves the incision whole Hold AID and new RID map information；

Packet forwarding module, it can be set to carry out forward process to the data message for cutting out terminal；

AID-RID mapped cache modules, cache the binding relationship of terminal AID, RID；

GGSN may also include opposite end maintenance of information module, and the opposite end maintenance of information module can be set to：Pair of maintenance terminal Client information, AID of the opposite end packet containing terminal and the AID of the Correspondent Node of the terminal correspondence relationship information；

The GGSN control module that cuts out may also be arranged to：In handoff procedure, believed according to the opposite end for cutting out terminal of maintenance Breath notifies change AID, RID mapping of opposite end AID-RID mapped caches module, notifies that maintenance of information module in opposite end stops safeguarding that this is cut Go out terminal to client information；

GGSN incision control module may also be arranged to：In handoff procedure, the incision terminal of original GGSN transmission is received To client information, notify this GGSN opposite end maintenance of information module preserve and safeguard the incision terminal to client information；

GGSN may also include RID update modules, and GGSN RID update modules can be set to：Terminal or cut out according to incision The AID to Correspondent Node in client information of terminal finds the gateway of Correspondent Node access（GGSN）Address, to the communication The gateway of opposite end access sends RID update notifications, carries the incision terminal or cuts out the AID and new RID of terminal.

GGSN may also include incision GGSN selecting modules, be reset in the forwarding for incision terminal for receiving new SGSN transmissions GGSN is selected after the request of position, incision can be obtained according to modes such as SGSN address lookup servers according to SGSN, GGSN binding table GGSN addresses.

GGSN incision control module may also be arranged to：In handoff procedure, what the GGSN that receiving terminal is cut out was transmitted cuts Enter terminal to client information, notify that this GGSN opposite end maintenance of information module is preserved and safeguarded；

The GGSN control module that cuts out may also be arranged to：The AID-RID of the Correspondent Node for cutting out terminal of maintenance is mapped The AID-RID mapped cache modules for the GGSN that information transmission is cut to terminal.

GGSN incision control module may also be arranged to send what terminal was cut out to for the new RID for cutting terminal distribution GGSN；

GGSN incision control module may also be arranged in the opposite end for the incision terminal for receiving the GGSN transmission that terminal is cut out After information, RID update modules are called to be updated for the RID that incision terminal is initiated to opposite end.

GGSN may also include map information maintenance module, and the map information maintenance module can be set to：In handoff procedure, Receive after the data message of incision terminal i.e. the local maintenance incision terminal Correspondent Node AID-RID map informations, and The AID-RID map informations of the Correspondent Node of the incision terminal of the GGSN transmission that the terminal received is cut out and local maintenance AID-RID map informations merge；

GGSN packet forwarding module can be set to forwarding data packets in the following way：Issuing of receiving is cut out into end The SGSN that the data message forwarding at end is cut out to terminal, the data message forwarding for issuing incision terminal received is cut to terminal SGSN；Or

GGSN may also include forwarding channel and set up module, and the forwarding channel is set up module and can be set to：In handoff procedure To cut out the forwarding channel that terminal is set up between GGSN that terminal cuts out and the GGSN of terminal incision；GGSN packet forwarding module It can be set to forwarding data packets in the following way：After receiving and issuing and cut out the data message of terminal, through the forwarding channel Issue incision GGSN；

GGSN opposite end maintenance of information module may also be arranged to：The incision terminal that the GGSN transmission cut out in preservation terminal comes To client information after, check that what GGSN forwardings that terminal is cut out came issues Correspondent Node in the data message of the incision terminal AID, such as has found new Correspondent Node, by the AID of the new Correspondent Node be registered in the incision terminal in client information；

GGSN RID update modules can be set to find the gateway of Correspondent Node access in the following way（GGSN）'s Address information：According to the AID of the terminal communication opposite end from local cache or the home subscriber subscribed services device (HLR/ of Correspondent Node ) or dns server or ILR inquire the address information of the gateway of Correspondent Node access HSS.

When GGSN opposite end maintenance of information module can be set to inquiry opposite end RID, opposite end information table is added；Receive opposite end from When line deletes AID-RID caching bindings, delete to client information.

GGSN opposite end maintenance of information module can be set to safeguard in the following way to client information：Pass through stream detection in real time AID in mechanism and/or data message by checking terminal, it may be found that the AID of new Correspondent Node be registered in the terminal To in client information, by the AID for the Correspondent Node that need to be deleted from the terminal to being deleted in client information.

The ILR is set to store AID-RID mapping relations, receive inquiry, registration, change that GGSN or ISR send, Delete the request of AID-RID mapping relations；

The ILR may also be arranged to when receiving inquiry AID-RID mapping relations, to store the initiation network element of the inquiry, When the AID RID associated change（Change, cancellation）, related network elements are notified, the work that GGSN communication opposite end tables rise is played With；

The ILR may also be arranged to inquire about the AID of terminal for terminal distribution AID, support GGSN using terminals IMSI.

In addition, the present invention also provides a kind of above-mentioned critical point GPRS nodes (GGSN).

For the ease of illustrating the present invention, the implementation of technical solution of the present invention is made below with reference to drawings and the specific embodiments It is described in further detail.It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application Can mutually it be combined.

Hereinafter, identity position separation architecture is used in a wcdma system the invention provides a kind of, in handoff procedure The motion management method for the WCDMA core nets that the identity of support terminal is separated with position, to avoid route roundabout.Specifically For, it is in WCDMA system, to realize no fixed anchor point switching by above-mentioned SILSN framework applications.It should be noted that using SILSN frameworks are intended merely to illustrate embodiments of the invention, and flow of the invention is also widely portable to other identity positions Put separation architecture.

The SILSN frameworks and its operation principle recorded according to background technology will be seen that cutting across ASR occurs for terminal movement When changing, the new ASR for cutting side will be terminal distribution RID, and message and decapsulation that encapsulation MS is sent are sent to MS message；Cut out The former ASR of side will delete the AID-RID map informations of the terminal, be sent to MS message to new ASR.Meanwhile, new ASR or Former ASR needs to update AID-RID mapping relations of the MS in ILR, also, if ASR, ISR use AID-RID mapped caches at this Ground, it is desirable to have a kind of mechanism, which changes AID-RID mappings, notifies ASR, ISR.

A kind of framework of the WCDMA core nets with SILSN frameworks is shown in Fig. 6：

GGSN is used as ASR function, has interface S1, interface S1 to be used for the RID to ILR query communications opposite end between ILR, Registration, change, the AID-RID mapping relations for deleting MS etc..

There are signaling interface S2 and data-interface D2, signaling interface S2 to be used for when GGSN switches between GGSN and ISR, notify The change of ISR correlations AID-RID bindings, it can also be used to which GGSN notifies ISR registrations, deletes AID-RID bindings.GGSN and ISR it Between data-interface D2 be used for GGSN and be sent to ISR the be sent to data and ISR of external network for forwarding MS to send to GGSN MS data.

The scope that the data-interface D3 of ISR and external network is not described in this patent.

The invention is not limited in above-mentioned framework.Because wireless access network may be using other structures, in other frameworks Middle Target RNC is probably other wireless side network elements.

In the reorientation set-up procedure based on above WCDMA core net frameworks, GGSN no longer needs grappling, can basis It is roundabout to reduce route that SGSN switching carries out GGSN switching.

Hereafter it is been described by mainly for for the improvement realizing no fixed anchor point to switch and carried out on original system, including Related function and flow.

Wen Zhong, when certain network element of description is handled terminal switching as former side network element, the terminal is called to cut out terminal； When certain network element of description is handled terminal switching as target side network element, the terminal is called incision terminal.Wen Zhong, will also be eventually The network element of the Correspondent Node access at end is referred to as opposite end network element；Separately, when stating the function of some network element, the network element will be linked into User terminal be referred to as terminal, be referred to as Correspondent Node with the user terminal of user terminal communication that accesses the network element.

Embodiment one

The WCDMA core net frameworks that the present embodiment is described based on Fig. 5, service SRNS of the description without anchor point GGSN was relocated Journey, handoff procedure no data is lost, and after the completion of switching, MS data message is route by new GGSN, circuitous to reduce route Return.

As shown in fig. 7, the flow of the present embodiment service SRNS repositioning process includes：

Step 701-711：The step 301-311 of flow is relocated compared with service SRNS.

The new SGSN of step 712. signals former SGSN, SRNS reorientations by sending forwarding reorientation completion message Process has been completed.Step 712 and step 713 can occur simultaneously.Step 712 is consistent with existing procedure step 312.

The new SGSN of step 713a are sent to former GGSN updates PDP Context request message（New SGSN addresses, SGSN TEID （Tunnel endpoint identifier）, discuss and decide QoS etc.）, the step 313 of flow is relocated compared with service SRNS.

Step A：Former GGSN is received after renewal PDP Context request message, according to the new SGSN addresses carried in message, certainly It is fixed whether to need to switch GGSN, it is determined whether needing the switching GGSN can also to access external service according to local policy Device obtains the modes such as information, if do not switched, GGSN is identical with existing follow-up process, and the present embodiment mainly describes to switch GGSN's Situation.

Former GGSN is if it is determined that switching GGSN, can be locally configured according to new SGSN address, inquiry, inquire about external server Etc. the address that mode obtains new GGSN；After new GGSN addresses are obtained, former GGSN sends PDP Context and pushed to new GGSN to disappear It may include MS IMSI, AID, PDP Context information in breath, PDP Context PUSH message（Address comprising new SGSN with TEID）, the information such as MS authentication information.The purpose of PDP Context PUSH message is to notify that new GGSN MS need switching herein, And PDP Context related MS, authentication information etc. is sent to new GGSN, is not limited to a piece of news.

The new GGSN of step B. are received after the PDP Context PUSH message that former GGSN is sent, be MS distribute one its own Address is as MS RID, and the RID can be the address for receiving original GGSN message（That is the second address information）Or one Newly assigned new GGSN other IP address；Meanwhile, the context distribution GTP that new GGSN is the MS received（GPRS Tunneling Protocol, GPRS Tunnel Protocol）Tunnel（Including chain of command and medium surface TEID, sent for new SGSN Upstream data bag）, the packet for subsequently forwarding MS with SGSN.

The new GGSN of step C1. send PDP Context PUSH message response to former GGSN, and whether response receives including new GGSN Switching, MS IMSI, new GGSN addresses（Used for the follow-up GTP tunnel with new SGSN, can be with receiving original GGSN message IP address is identical, can also be different）, new GGSN chains of command and medium surface TEID, MS AID are the RID of MS distribution, interim to turn Send out TEID（If MS needs GGSN to sort PDU data bag PDU sequence numbers）, interim PDU sequence numbers（If MS needs GGSN PDU data bag is sorted with PDU sequence numbers）Etc. information.

Step C2. originals GGSN receives the PDP Context PUSH message response that new GGSN is sent, if new GGSN does not receive to cut Change, former GGSN can select another GGSN repeat step A according to strategy and configuration；Trial can also be no longer switched over, is used Existing procedure sets up tunnel with new SGSN, completes service SRNS repositioning process.

If new GGSN receives switching, former GGSN sends PDP Context handover request to new GGSN, it may include MS's IMSI, AID, up-downgoing PDU sequence numbers（If MS needs GGSN to sort PDU data bag PDU sequence numbers）Etc. information.

If MS needs GGSN to sort descending PDU data bag PDU sequence numbers, former GGSN start by downlink data packet to New GGSN interim forwarding TEID is sent, and uses interim PDU sequence numbers；New GGSN is sorted after receiving with descending PDU sequence numbers, is made Sent with new SGSN medium surface TEID to new SGSN.

If MS does not need GGSN to sort descending PDU data bag with PDU sequence numbers, original GGSN can be used new SGSN's Medium surface TEID is forwarded to new SGSN.The situation that GGSN is sorted to descending PDU data bag with PDU sequence numbers is not needed for MS, New GGSN is not required to distribute PDP Context PUSH message response in interim forwarding TEID and interim PDU sequence numbers, step C1 and is not required to take The interim forwarding TEID of band and interim PDU sequence numbers;Former GGSN can not disappear in PDP Context switching into new GGSN forwarding steps C2 Breath, new GGSN is sent when receiving the data for being sent to MS using new SGSN medium surface TEID to new SGSN.

Former GGSN can directly encapsulate forwarding MS upstream data bag, or be turned with new GGSN medium surface TEID to new GGSN Hair.

Step 713b. original GGSN are sent to new SGSN updates PDP Context response, and PDP is updated with original process step 313 Context response information form is consistent, but medium surface TEID and chain of command TEID fill in the new GGSN's that is received in step C1 Medium surface TEID and chain of command TEID;The GGSN addresses of user plane and the GGSN addresses of chain of command fill in what is received in step C1 The GGSN addresses of new GGSN user plane and the GGSN addresses for chain of command.After this step, new SGSN starts to new GGSN, and It is not that former GGSN sends upstream data.

Step D. originals GGSN according to MS communication opposite end table, can search the opposite end GGSN of all MS associations（Except new GGSN）, The message of MS AID-RID mapping changes is sent, and receives the response of AID-RID mapping change message.

Step E. original GGSN send the message of AID-RID mapping changes to ILR, and receive ILR response.

Step F. originals GGSN receives all opposite ends（GGSN, ISR, ILR）Answering for message is changed in the AID-RID mappings of transmission After answering, it can stop forwarding data to new GGSN, delete relevant information；Meanwhile, sent to new GGSN and stop forwarding message, new GGSN The interim forwarding TEID and interim PDU sequence numbers of distribution can be deleted by receiving after the message.

If not requiring that PDU sequence numbers sort, it can not be sent to new GGSN and stop forwarding message.

Step F also can set repeating timer in former GGSN, stop forwarding and disappear to new GGSN transmissions after timer expiry Breath.

Also aging mechanism can be used to interim forwarding TEID and interim PDU sequence numbers in new GGSN, then can not be to new GGSN Transmission stops forwarding message.

Step 714. receives forwarding reorientation completion message, and former SGSN sends Iu release commands and gives source RNC.Work as RNC Data forwarding timer is expired, and source RNC is responded with Iu Release completes.Step 714 is consistent with existing procedure step 314.

Step 715. MS initiates Routing Area Update process, because MS is in PMM-CONNECTED patterns, and it is to perform RA renewal processes a subset.Step 715 is consistent with existing procedure step 315.

The present embodiment step A to F is the change of the different existing procedures of this patent, is updated by new SGSN PDP Context Message trigger, the seamless switching for GGSN.With combining direct-cut operation and SRNS reorientation flows, united cell/URA and service The flow difference of RNS reorientations is wireless side, therefore does not influence the description of above-described embodiment.The present embodiment step A to F is same Updated available for the joint direct-cut operation and SRNS repositioning process of existing procedure and united cell/URA and SRNS was relocated Journey, is triggered by new SGSN PDP Context new information, realizes GGSN seamless switching.

In addition, the present embodiment can also have following variants/alternative：

For example, in step C2, the AID-RID cachings for the communication opposite end that former GGSN can also be preserved are sent to newly GGSN。

For example, in step D, there are various ways notification communication opposite end：

Mode one, step D is not performed, and the renewal for only carrying out step E, AID-RID map information is notified by ILR；

Mode two, uses broadcast advice method.

For example, it is also possible to do not perform step D, former all data for being sent to MS of GGSN forwardings are to new GGSN, and forwarding time It is longer than the time of all GGSN cachings AID-RID mappings, it is ensured that former GGSN forwards all opposite end GGSN old due to AID-RID cachings Change, inquiry ILR obtains the packet before new AID-RID mappings

Former GGSN can notify that opposite end network element (GGSN, ISR) MS has been switched to new GGSN when receiving the data for being sent to MS.

For example, step D and/or E can also be performed by new GGSN, the MS of the transmittable cachings of former GGSN communication opposite end table is sent To new GGSN.

If for example, there is multiple PDP Contexts between original GGSN and MS, former GGSN is receiving last PDP Context During Notification of Changes, step A-F is performed, multiple PDP Contexts are disposably transmitted to new GGSN.

Embodiment two

The WCDMA core net frameworks that the present embodiment is described based on Fig. 5, description joint direct-cut operation and SRNS reorientation flows, After the completion of joint direct-cut operation and SRNS reorientation flows, MS is associated with new SGSN and new GGSN.

Step 801：Source RNC initiates joint direct-cut operation and the SRNS reorientations of ps domain.Compared with joint direct-cut operation and SRNS Relocate flow.

Step 802：Source RNC is by sending re-positioning request (Relocation Required) message to original SGSN (Old SGSN), reorientation set-up procedure is initiated；The reorientation type that is included in the re-positioning request, reason, cell-of-origin ID, target are small The contents such as area ID, source RNC to Target RNC Transparent Container.Unlike step 702, here reorientation type is set to " relate to And UE ".Compared with joint direct-cut operation and SRNS reorientation flows.

Step 803-807：It is similar with step 703-707, relocate flow compared with joint direct-cut operation and SRNS.

Step 808：Source RNC is by sending RRC information to MS, the execution of triggering SRNS reorientations；Terminal sends RRC information To Target RNC.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 809：Source RNC sends transmission RNC contexts by former SGSN, new SGSN to Target RNC（Forward SRNC Context）Message.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 810：When Target RNC finds terminal in its service area, Target RNC sends reorientation detection to new SGSN （Relocation Detect）Message.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 811：When Target RNC receives the RRC information that terminal is sended over（Step 808）, Target RNC is to new SGSN Reorientation is sent to complete（Relocation Complete）Message.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 812：New SGSN signals former SGSN, SRNS reorientations by sending forwarding reorientation completion message Process has been completed.Step 812 and step 813 can occur simultaneously.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 813a：New SGSN is sent to former GGSN updates PDP Context request message（New SGSN addresses, SGSN TEID （Tunnel endpoint identifier）, discuss and decide QoS etc.）, flow is relocated compared with joint direct-cut operation and SRNS.

Step A：The step A of be the same as Example one.

Step B：The step B of be the same as Example one.

Step C1：The step C1 of be the same as Example one.

Step C2：The step C2 of be the same as Example one.

Step 813b：The step 713b of be the same as Example one.

Step D：The step D of be the same as Example one.

Step E：The step E of be the same as Example one.

Step F：The step F of be the same as Example one.

Step 814：Forwarding reorientation completion message is received, former SGSN sends Iu release commands and gives source RNC.When RNC numbers Expired according to repeating timer, source RNC is responded with Iu Release completes.Compared with joint direct-cut operation and SRNS reorientation flows.

Step 815：Position updating process, flow is relocated compared with joint direct-cut operation and SRNS.

In addition, the present embodiment can also have and the identical variants of embodiment one.

Embodiment three

The WCDMA core net frameworks that the present embodiment is described based on Fig. 5, describe united cell/URA and SRNS and reset bit stream After the completion of journey, united cell/URA and SRNS reorientation flow, MS is associated with new SGSN and new GGSN.

Step 901：Terminal sends cell update to source RNC（Cell Update ）Message, or send URA Update Or Cell Update or GRA Update.Compared with united cell/URA and SRNS reorientation flows.

Step 902-909：It is similar with the step 702-709 of embodiment one.Reset compared with united cell/URA and SRNS Bit stream journey.

Step 910：Target RNC sends cell update to terminal and confirmed（Cell Update Confirm）Message, either Send URA Update Confirm or Cell Update Confirm or GRA Update Confirm；Terminal is to Target RNC Send RAN mobility information confirmation messages（RAN Mobility Information Confirm）.Compared with united cell/ URA and SRNS reorientation flows.

Step 911：When Target RNC receives the RAN mobility information confirmation messages that terminal is sended over（Step 910）, Target RNC sends reorientation to new SGSN and completed（Relocation Complete）Message.Compared with united cell/URA and SRNS relocates flow.

Step 912：New SGSN signals former SGSN, SRNS reorientations by sending forwarding reorientation completion message Process has been completed.Step 912 and step 913 can occur simultaneously.Compared with united cell/URA and SRNS reorientation flows.

Step 913a：New SGSN is sent to former GGSN updates PDP Context request message（New SGSN addresses, SGSN TEID （Tunnel endpoint identifier）, discuss and decide QoS etc.）, flow is relocated compared with united cell/URA and SRNS.

Step A：The step A of be the same as Example one.

Step B：The step B of be the same as Example one.

Step C1：The step C1 of be the same as Example one.

Step C2：The step C2 of be the same as Example one.

Step 913b：The step 713b of be the same as Example one.

Step D：The step D of be the same as Example one.

Step E：The step E of be the same as Example one.

Step F：The step F of be the same as Example one.

Step 914：Forwarding reorientation completion message is received, former SGSN sends Iu release commands and gives source RNC.When RNC numbers Expired according to repeating timer, source RNC is responded with Iu Release completes.Bit stream is reset compared with united cell/URA and SRNS Journey.

Step 915：Position updating process, flow is relocated compared with united cell/URA and SRNS.

In addition, the present embodiment can also have and the identical variants of embodiment one.

Example IV

The WCDMA core net frameworks that the present embodiment is described based on Fig. 5, describe Routing Area Update process, and Routing Area Update is complete Cheng Hou, MS are associated with new SGSN and new GGSN.

Step 1001-1008：It is identical that process step 401-408 is updated with existing route area.

The new SGSN of step 1009a are sent to former GGSN updates PDP Context request message（New SGSN addresses, SGSN TEID （Tunnel endpoint identifier）, discuss and decide QoS etc.）, compared with Routing Area Update step 409.

Step A-C is identical with step A-C in embodiment one.

Step 1009b. is identical with the step 713b of embodiment one.

Step D-F is identical with step D-F in embodiment one.

Step 1010-1019：It is identical that process step 410-419 is updated with existing route area.

In addition, the present embodiment can also have and the identical variants of embodiment one.

Because TD-SCDMA core nets and WCDMA core nets use same architecture, therefore technical solution of the present invention equally can be with For TD-SCDMA and similar framework core network.

As described above, compared with prior art, the present invention can support that the identity of terminal is separated with position, keep away Exempt from route it is roundabout, and can as far as possible be based on existing reorientation flow, not influence it is existing reorientation flow uniformity, with compared with Good feasibility.

It these are only that the present invention's is preferable to carry out case, be not intended to limit the invention, the present invention can also have other Various embodiments, in the case of without departing substantially from spirit of the invention and its essence, those of ordinary skill in the art can be according to this hair It is bright to make various corresponding changes and deformation, but these corresponding changes and deformation should all belong to appended claims of the invention Protection domain.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.

Claims (44)

1. a kind of motion management method, it is characterised in that

Between Service GPRS node SGSN in repositioning process, the former gateway node (GGSN) of terminal access is according to the terminal When the renewal packet data protocol PDP Context request determination that new SGSN is sent needs switching GGSN, by the PDP of the terminal New GGSN is hereafter pushed to, and the first address information of the new GGSN is notified into the new SGSN；

The address for the new SGSN that the new GGSN is included in the PDP Context according to the terminal and tunnel endpoint identifier TEID, the downlink data of the terminal is sent to the new SGSN；

The new SGSN sends the upper line number of the terminal to the new GGSN according to the first address information of the new GGSN According to；

The address for the new SGSN that the former GGSN is included in being asked according to the renewal PDP Context, it is local by inquiry Configuration or inquiry off-site server obtain the second address information of the new GGSN, and according to second address got Information sends PDP Context PUSH message to the new GGSN, and the PDP Context of the terminal is pushed into the new GGSN； The identity AID of the terminal is also included in the PDP Context PUSH message that the former GGSN is sent；

The new GGSN is received after the PDP Context PUSH message, is the new route that the terminal distribution points to this GGSN Station location marker RID.

2. the method as described in claim 1, it is characterised in that

The new GGSN is received after the PDP Context PUSH message, and sending PDP Context to the former GGSN pushes response.

3. method as claimed in claim 2, it is characterised in that

The new GGSN is sent to the former GGSN includes the instruction for whether receiving switching in PDP Context push response.

4. method as claimed in claim 2, it is characterised in that

The former GGSN according to the address of the new SGSN included in the renewal PDP Context request, according to local policy, And/or the information on load of the new GGSN determines the need for switching GGSN.

5. method as claimed in claim 3, it is characterised in that

The new GGSN is received after the PDP Context PUSH message, if receiving switching, in above and below the PDP of transmission Text pushes the first address information for including the new GGSN in response；

The former GGSN receives PDP Context and pushed after response, and the first address information of the new GGSN is included in and sends new Notified in SGSN renewal PDP Context response to the new SGSN.

6. method as claimed in claim 5, it is characterised in that

First address information includes the chain of command and medium surface IP address, chain of command and medium surface TEID of the new GGSN；

The former GGSN to the new SGSN when sending the renewal PDP Context response, during the PDP Context is responded Comprising GGSN address information extend this as the first address information of the new GGSN.

7. method as claimed in claim 3, it is characterised in that

If the terminal needs GGSN to carry out PDU sequence number sequences, the new GGSN to protocol Data Unit PDU data bag Also TEID, interim PDU sequence numbers are forwarded in the PDP Context of transmission pushes response comprising interim；

The former GGSN pushes the instruction for whether receiving switching included in response according to the PDP Context, if described new GGSN receives switching, then the former GGSN sends PDP Context handover request to the new GGSN, above and below the terminal Row PDU sequence numbers.

8. method as claimed in claim 7, it is characterised in that

The former GGSN issues the data of the terminal using the interim forwarding TEID to the new GGSN.

9. method as claimed in claim 7, it is characterised in that

The former GGSN is transmitted to the data of the new GGSN using the interim PDU sequence numbers sequence.

10. the method as described in claim 1, it is characterised in that

The new GGSN is that the new RID of the terminal distribution is second address information or the new GGSN Other address informations.

11. method as claimed in claim 10, it is characterised in that

The former GGSN obtains the new RID in the following way：

Mode one, the new GGSN will be notified to the former GGSN for the new RID of the terminal distribution；

Mode two, the second address information for the new GGSN that the former GGSN is arrived according to the address acquisition of the new SGSN, i.e., For the new RID of the terminal.

12. the method as described in claim 1,10 or 11, it is characterised in that

The former GGSN of new GGSN or described send RID registration requests to the ownership identity position register ILR of the terminal, take With the new RID, the ownership ILR of the terminal updates the RID of the terminal preserved.

13. method as claimed in claim 2, it is characterised in that

The former GGSN is according to the address of the new SGSN, and the second address information for obtaining the new GGSN is locally configured in inquiry Step, be specially：

The local static configuration SGSN of GGSN and GGSN mapping tables, the former GGSN reflect according to the address search of the new SGSN Firing table gets the second address information of the new GGSN.

14. method as claimed in claim 11, it is characterised in that methods described also includes：

The former GGSN is got behind the new RID addresses of the terminal, according to the terminal of maintenance to client information and described The AID-RID map informations of the Correspondent Node of terminal find the RID of Correspondent Node, and the GGSN accessed to the Correspondent Node is sent out RID update notifications are sent, the AID and new RID of the terminal is carried.

15. method as claimed in claim 14, it is characterised in that

The former GGSN is received after the response that all AID-RID map updatings are notified, and/or expired in the repeating timer of setting Afterwards, stop issuing the data of the terminal to the new GGSN.

16. the method as described in claim 7 or 15, it is characterised in that

The former GGSN is stopping to after the new GGSN forwardings, is sent to the new GGSN and stops forwarding message；

The new GGSN receives interim the forwarding TEID, and/or interim PDU for stopping forwarding after message, deleting distribution Sequence number.

17. the method as described in claim 11 or 14, it is characterised in that methods described also includes：

The former GGSN is got behind the new RID addresses of the terminal, is sent RID update notifications to interconnection services node ISR, is taken AID with the terminal and new RID.

18. the method as described in claim 1, it is characterised in that methods described also includes：

In the repositioning process, the former GGSN is by the communication to client information and/or the terminal of the terminal of maintenance The AID-RID map informations of opposite end are sent to the new GGSN；

The AID-RID to client information and/or the Correspondent Node of the terminal that the new GGSN preserves the terminal received reflects Penetrate information.

19. method as claimed in claim 18, it is characterised in that

After the new GGSN is the new RID of the terminal distribution, according to the terminal for preserving and safeguarding to client information and/or The AID-RID map informations of the Correspondent Node of the terminal, find the RID of Correspondent Node, are accessed to the Correspondent Node GGSN sends RID update notifications, carries the AID and new RID of the terminal；And/or, RID update notifications are sent to ISR, are carried The AID of the terminal and new RID.

20. method as claimed in claim 19, it is characterised in that

The new GGSN receive the terminal of the former GGSN transmission to client information and/or the Correspondent Node of the terminal After AID-RID map informations, check that the Correspondent Node received is sent to the source AID in the data message of the terminal, such as find New Correspondent Node and/or RID update failed Correspondent Node, then the GGSN accessed to these Correspondent Nodes send and/or Retransmit RID update notifications, and by the AID of new Correspondent Node be registered in the terminal in client information.

21. the method as described in claim 1, it is characterised in that methods described also includes：In the repositioning process, institute State former GGSN and receive and be sent to after the data message of the terminal,

The data message is sent to source wireless side network element by the former GGSN through former SGSN, and passes through the source wireless side network element Forwarding channel between the network element of Target Wireless side is forwarded to Target Wireless side network element, is issued by Target Wireless side network element The terminal；Or,

The former GGSN by the former GGSN of the data message through being set up in the repositioning process and new GGSN it Between forwarding channel be sent to the new GGSN, the data message is sent to described by the new GGSN through the new SGSN again Target Wireless side network element, the terminal is sent to by Target Wireless side network element.

22. the method as described in claim 18 or 20, it is characterised in that methods described also includes：

The new GGSN receive after the data message of the terminal i.e. terminal described in local maintenance Correspondent Node AID-RID Map information, and after the AID-RID map informations of Correspondent Node of former GGSN transmission are received, by the Correspondent Node received AID-RID map informations and local maintenance Correspondent Node AID-RID map informations merge.

23. the method as described in claim 18 or 20, it is characterised in that methods described also includes：

The former GGSN is when safeguarding to client information, by flowing real-time testing mechanism and/or checking the data message of the terminal In source RID and source AID come the Correspondent Node that finds new Correspondent Node or need to delete, by the AID and RID of new Correspondent Node It is registered in the AID-RID map informations to client information and Correspondent Node of the terminal, by the terminal in client information The AID for the Correspondent Node that need to be deleted is deleted.

24. the method as described in claim 1, it is characterised in that methods described also includes：

During the Routing Area Update that the terminal is initiated after the completion of the repositioning process, to the signing of the terminal attaching The GGSN addresses that the terminal is accessed are updated to the address of the new GGSN by register HLR/HSS.

25. the method as described in claim 1, it is characterised in that methods described also includes：

GGSN or ISR to terminal attaching ILR inquire about the terminal AID corresponding RID when, the terminal attaching ILR returns described The RID of terminal；Meanwhile, the terminal attaching ILR records initiate the GGSN or ISR of inquiry；

When the RID for knowing the terminal changes, the terminal attaching ILR notifies all GGSN, ISR for initiating inquiry The change of the terminal RID.

26. the method as described in claim 1, it is characterised in that methods described also includes：

The terminal is linked into after the new GGSN, and the former GGSN or new GGSN are using the mode of broadcast by the terminal RID change notifications all GGSN, ISR.

27. the method as described in claim 1, it is characterised in that

The repositioning process at least includes：

SRNS Serving Radio Network Subsystem SRNS repositioning process；Or,

United direct-cut operation and SRNS repositioning process；Or,

Cell/URA associated updates and SRNS repositioning process；Or,

Routing Area Update process.

28. a kind of gateway node, it is characterised in that applied to WCDMA WCDMA or TD SDMA TD- SCDMA networks, the gateway node GGSN includes：

Control module is cut out, incision terminal is directed to more for what is sent according to the new SGSN received in repositioning process between SGSN When new PDP Context request determination needs switching GGSN, the PDP Context of the terminal is pushed to the new of the terminal incision GGSN, and the first address information of the new GGSN is notified into the new SGSN；

Control module is cut, after the PDP Context for receiving the terminal that the former GGSN that terminal is cut out is pushed, according to institute The new SGSN included in the PDP Context for stating terminal address and TEID, the terminal is sent to the new SGSN Downlink data；

The control module that cuts out is used for, and according to the new SGSN included in the renewal PDP Context request address, leads to Cross SGSN and the GGSN mapping table for inquiring about local static configuration or inquiry off-site server obtains the second address of the new GGSN Information, sends PDP Context PUSH message, by the terminal according to second address information got to the new GGSN PDP Context be pushed to the new GGSN；

The gateway node also includes RID distribute modules, and AID-RID mapped cache modules；

The RID distribute modules are used for, and this GGSN new RID is pointed to for incision terminal distribution, and the new RID of distribution is Other address informations of second address information or the new GGSN；

The AID-RID mapped caches module is used for, and preserves the incision terminal AID and the new RID map information.

29. gateway node as claimed in claim 28, it is characterised in that the gateway node also includes：

GGSN selecting modules are cut, for receiving after the renewal PDP Context request, according to local policy, and/or described new GGSN information on load determines the need for switching GGSN, and the GGSN that selection is cut.

30. gateway node as claimed in claim 28, it is characterised in that

The incision control module is used for, and receives after the PDP Context PUSH message, and above and below PDP is sent to the former GGSN Text pushes response, and the instruction for whether receiving switching is included in the PDP Context pushes response.

31. gateway node as claimed in claim 28, it is characterised in that

The incision control module is additionally operable to, and is received after the PDP Context PUSH message, if receiving switching, is being sent The PDP Context push the first address information of the new GGSN also included in response；

The control module that cuts out is additionally operable to, and is received PDP Context and is pushed after response, by the first address information of the new GGSN Notified included in the renewal PDP Context response for sending new SGSN to the new SGSN；

Wherein, first address information includes the chain of command and medium surface IP address, chain of command and medium surface of the new GGSN TEID。

32. gateway node as claimed in claim 31, it is characterised in that

The control module that cuts out is additionally operable to, will be described when sending the renewal PDP Context response to the new SGSN The GGSN included in PDP Context response address information extends this as the first address information of the new GGSN.

33. gateway node as claimed in claim 28, it is characterised in that the gateway node also includes RID Registering modules,

The RID Registering modules are used for, and are pointed to for incision terminal distribution after this GGSN new RID, to the ownership of the terminal ILR sends RID registration requests, carries the new RID, notifies that the ownership ILR of the terminal updates the terminal of preservation RID；

Or, according to the new RID for cutting out terminal of acquisition, RID registration requests are sent to the ownership ILR of the terminal, are carried The new RID, notifies that the ownership ILR of the terminal updates the RID of the terminal preserved.

34. gateway node as claimed in claim 28, it is characterised in that

The RID distribute modules are additionally operable to, and the new RID of distribution is notified to the former GGSN；

The RID Registering modules are used for, the new RID notified according to the RID distribute modules, obtain the new of the terminal RID；Or, the new RID of terminal is cut out described in acquisition in the following way：Arrived according to the address acquisition of the new SGSN The second address information of the new GGSN, the new RID of as described terminal.

35. the gateway node as described in claim 28 or 34, it is characterised in that the gateway node also includes tieing up client information Protect module,

The opposite end maintenance of information module is used for, the source in data message by flowing real-time testing mechanism and/or inspection terminal The AID and RID of new Correspondent Node are registered in by RID and source AID come the Correspondent Node that finds new Correspondent Node or need to delete In the AID-RID map informations to client information and Correspondent Node of the terminal, by the terminal to needing to delete in client information Correspondent Node AID delete；And,

In repositioning process, by maintenance cut out terminal to client information and/or the AID-RID of the Correspondent Node of the terminal Map information is sent to new GGSN, or, preserve receive incision terminal to client information and/or the Correspondent Node of the terminal AID-RID map informations.

36. gateway node as claimed in claim 33, it is characterised in that the gateway node also includes RID update notification moulds Block,

The RID update notifications module is used for, after for the new RID of incision terminal distribution, or is receiving the RID distribution mould What block was notified cuts out after the new RID of terminal,

According to the terminal for preserving and safeguarding to client information and the AID-RID map informations of the Correspondent Node of the terminal, Find the RID of Correspondent Node, to the Correspondent Node access GGSN send RID update notifications, carry the terminal AID and New RID；And/or, RID update notifications are sent to ISR, the AID and new RID of the terminal is carried.

37. gateway node as claimed in claim 36, it is characterised in that

The opposite end maintenance of information module is used for, receive the former GGSN transmission the terminal to client information and the terminal Correspondent Node AID-RID map informations after, check that the Correspondent Node that receives is sent in the data message of the terminal Source AID, such as has found new Correspondent Node and/or the failed Correspondent Node of RID renewals, is then accessed to these Correspondent Nodes GGSN send and/or retransmit RID update notifications, and by the AID of new Correspondent Node be registered in the terminal in client information.

38. gateway node as claimed in claim 28, it is characterised in that the gateway node also sets up mould including forwarding channel Block and data forwarding module,

The forwarding channel, which sets up module, to be used for, to cut out the forwarding channel that terminal is set up between original GGSN and new GGSN；

The data forwarding module is used for, and after receiving and issuing and cut out the data message of terminal, institute is issued through the forwarding channel State new GGSN；Or, from the forwarding channel receive incision terminal data message after, through the new SGSN be sent to target without Line side network element, the terminal is sent to by Target Wireless side network element.

39. gateway node as claimed in claim 28, it is characterised in that the gateway node also includes data forwarding module,

The data forwarding module is used for, and after receiving and issuing and cut out the data message of terminal, is sent to source through former SGSN wireless Side network element, and it is forwarded to the Target Wireless side by the forwarding channel between the source wireless side network element and Target Wireless side network element Network element, the terminal is issued by Target Wireless side network element.

40. gateway node as claimed in claim 35, it is characterised in that

The opposite end maintenance of information module is additionally operable to, and is received after the data message of incision terminal i.e. in terminal described in local maintenance The AID-RID map informations of Correspondent Node, and after the AID-RID map informations of Correspondent Node of former GGSN transmission are received, will The AID-RID map informations of the AID-RID map informations of the Correspondent Node received and the Correspondent Node of local maintenance merge.

41. gateway node as claimed in claim 28, it is characterised in that

The control module that cuts out is additionally operable to, the Routing Area Update process that the terminal is initiated after the completion of the repositioning process In, the GGSN addresses that the terminal is accessed are updated to the new GGSN by the signing register HLR/HSS to the terminal attaching Address.

42. a kind of core network, it is characterised in that the core network is included as described in any one of claim 28 to 34 Gateway node, also including SGSN and ILR, wherein：

The SGSN is used for, between SGSN in repositioning process, sends and is updated after PDP Context request to the former GGSN of terminal, The first address information for the new GGSN that the former GGSN according to receiving is notified, the up of the terminal is sent to the new GGSN Data；

The ILR is used for, and stores the AID-RID mapping relations of terminal, receive inquiry, registration, change that GGSN or ISR initiate, Delete the request of AID-RID mapping relations.

43. core network as claimed in claim 42, it is characterised in that

The ILR is additionally operable to, when receiving the corresponding RID of GGSN or ISR inquiries terminal AID request, according to storage The AID-RID mapping relations of the terminal return to the RID of the terminal；Meanwhile, record initiates the GGSN or ISR of inquiry；

When the RID for knowing the terminal changes, the ILR notifies terminal described in all GGSN, ISR for initiating inquiry RID change.

44. the core network as described in claim 42 or 43, it is characterised in that

The ILR is additionally operable to, and is terminal distribution AID, and supports that GGSN using terminal international mobile subscriber identitys IMSI is inquired about The AID of terminal.