CN102625405A - Mobility management method, gateway node and core network - Google Patents

Abstract

The invention discloses a mobility management method, a gateway node and a core network. During a relocation process between serving general packet radio service (GPRS) support nodes (SGSN), when an original gateway GPRS support node (GGSN) accessed to a terminal determines that it is needed to switch a GGSN according to an update packet data protocol (PDP) context request sent by a new SGSN of the terminal, the PDP context of the terminal is pushed to a new GGSN and first address information of the new GGSN is notified to the new SGSN; the new GGSN sends downlink data sent to the terminal to the new SGSN according to the address of the new SGSN contained in the PDP context of the terminal and tunnel endpoint identifier (TEID); and the new SGSN sends uplink data of the terminal to the new GGSN according to the first address information of the new GGSN. According to the invention, a location management function is realized; subscriber identifier and locator separation of the terminal is supported; and a routing circularity problem can be solved. Moreover, consistency of an existing relocation flow will not be influenced, thereby realizing good feasibility.

Description

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

Technical field

The present invention relates to the mobile communication technology field, relate in particular to a kind of motion management method, gateway node and core network.

Background technology

Existing WCDMA (Wideband Code Division Multiple Access abbreviates WCDMA as) system is current important system and the method that realizes service access based on wireless WCDMA technology.The core net framework of WCDMA is as shown in Figure 1; Comprise service GPRS (General Packet Radio Service; The wireless universal packet service) network element such as the signatory register of node (Serving GPRS Support Node abbreviates SGSN as), critical point GPRS node (Gateway GPRS Support Node abbreviates GGSN as) and home subscriber; Among this paper with attaching position register (the Home Location Register among the 2G (second generation mobile communication technology); Abbreviate HLR as) and 3G in home subscriber server (Home Subscriber Server abbreviates HSS as) be referred to as the signatory register of home subscriber, represent with HLR/HSS.Because existing TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA) core network uses and the WCDMA same architecture, following WCDMA system refers to WCDMA and TD-SCDMA.

SGSN is the basic composition network element of of GPRS network, is a new network element device of in global system for mobile communications (Globle System for Mobile Communication abbreviates GSM as) network, introducing for gprs service is provided.The main functions such as routing forwarding, mobile management, session management, Logical Link Management, authentication and encryption of accomplishing packet data package.

GGSN provides data message in WCDMA net and route and encapsulation between the external data network, plays the gateway effect, and it comprises that PS adheres to user's routing iinformation, and routing iinformation is used for arriving the data message tunnel the current attachment point of MS, that is, and and SGSN.

HLR/HSS is used to store user's packet domain subscription data and routing iinformation.

Mobile network's a key property is the continuity transmitting-receiving that in the process that continue to move at the terminal, still keeps professional, Here it is handoff functionality.For the WCDMA core net, handoff functionality realizes that this paper mainly discusses the reorientation flow process, does not relate to switching problem between 2G, 3G system between reorientation flow process and 2G, 3G system, switching.

The reorientation flow process is accomplished the user makes the access path of data in core net change with terminal location in the process of using business datum, thereby guarantees professional continuity.The reorientation flow process is a flow process the most complicated in the mobile communication core net.Relate to the function of data forwarding, routing update.

The reorientation flow process is divided into by scene of generating:

-SRNS Serving Radio Network Subsystem (Service Radio Network Subsystem, SRNS) reorientation;

The direct-cut operation and the SRNS reorientation of-associating;

-sub-district/URA (UTRAN Registration Area, UTRAN registration area) associated update and SRNS reorientation;

-Routing Area Update;

-SRNS reorientation cancellation.

Service SRNS repositioning process

Service SRNS repositioning process is only carried out when MS (terminal) is in PMM-CONNECTED (packet domain mobile management-connection) state, and the Iur interface is used for transmitting control signaling and user data.

Service SRNS repositioning process be used for UTRAN ((Universal Terrestrial Radio Access Network, UMTS wireless access network) side from the source RNC to Target RNC from one " fixing resting position ", UTRAN is moved to the CN tie point.In this process, the Iu link is reorientation.On the same SGSN that if Target RNC is connected with source RNC links to each other, then the inner repositioning process of SGSN SRNS (SRNS Serving Radio Network Subsystem) is performed, and this process is not done the SGSN switching.Otherwise,, then need do the service SRNS repositioning process of SGSN handoff scenario if Target RNC is connected on the different SGSN with source RNC.

RNC's reorientated when Fig. 2 a was depicted as source RNC (Serving RNC) and Target RNC and is connected to different SGSN and goes up.Fig. 2 b is depicted as the situation after SRNS repositioning process and the completion of Routing Area Update process.

After service SRNS repositioning process and RA (Routing Area, route district) upgraded, MS registered in new SGSN, and MS is in the PMM-CONNECTED state for new SGSN, and Target RNC will be as Serving RNC.

Service SRNS repositioning process is seen the explanation (based on 3GPP TS 23.060 R6 versions) of Fig. 3, comprises reorientation set-up procedure, reorientation implementation and reorientation complete process, and is specific as follows:

Step 301: the SRNS reorientation is initiated in RNC decision in source;

Step 302: source RNC sends reorientation (Relocation Required) message (comprise reorientation type, reason, source ID, Target id, source RNC to the Target RNC transparent vessel etc.) and gives former SGSN, initiation reorientation set-up procedure.

Wherein, the source comprises necessary information, security functionality and the RRC context information (comprising the UE capacity) of reorientation coordination to the Target RNC transparent vessel.

Step 303: former SGSN, sends " transmitting re-positioning request (Forward Relocation Required) " message and gives new SGSN if confirm that the SRNS reorientation is the SRNS reorientation between SGSN according to Target cell ID, initiates the reorientation resource allocation process.

Step 304a: new SGSN sends RELOCATION REQUEST message and gives Target RNC.

Comprise in this RELOCATION REQUEST message that permanent NAS (Non-Access Stratum) UE identifier (like international mobile subscriber identity IMSI), reason, CN territory indicating device, source RNC are to the transparent vessel of Target RNC and the RAB that will be provided with (Radio Access Bearer abbreviates RAB as) etc.

Step 304b: after Target RNC was accepted resource that RAB is necessary and comprised that the Iu user plane becomes the distribution of work, the RAB that sets up with new SGSN carried, and sent re-positioning request and confirmed that (Relocation Request Acknowledge) message gives new SGSN;

Step 305: the resource that transmits user data between Target RNC and the new SGSN is distributed; And after the reorientation that new SGSN has been SRNS was ready, new SGSN sent " transmitting relocation response (Forward Relocation Response) " message to former SGSN; So far, the reorientation resource allocation process is successfully terminated.

Step 306: former SGSN sends reorientation order (Relocation Command) message and gives new RNC, continues the reorientation of SRNS;

Comprise in the reorientation command messages: RAB that discharge and the RAB that restricted by data forwarding.Former SGSN confirms to receive the RAB of data forwarding restriction according to service quality (Quality of Service abbreviates QoS as).

Step 307: after source RNC receives the reorientation command messages from the PS territory, the log-on data repeating timer, source RNC begins to transmit data.

Data forwarding in the SRNS reorientation should be carried out through the Iu interface, means that the exchanges data between source SRNC and the Target RNC is duplicated in the SRNC of source, and sends at IP course Target RNC.

Step 308: when the reorientation set-up procedure is successfully stopped, and source RNC is ready, source RNC through send " Target RNC to source RNC transparent vessel " in RRC (Radio Resource control) message that provides to MS, the execution of triggering SRNS reorientation.

Above-mentioned RRC message is carried UE information word and CN transparent vessel as being physical channel reconfiguration message (Physical Channel Reconfiguration) in the message.

Step 309: when receiving reorientation execution triggering, Target RNC should send relocation detect-message and give new SGSN.When relocation detect-message was sent out, Target RNC should start source RNC operation.

Step 310: target SRNC sends the RAN mobility information to source RNC, comprises local zone sign and route cell ID etc., also comprises the sequence number between terminal and the SRNC.After receiving this information, the terminal begins to send the upstream data bag to Target RNC.

After the terminal is accomplished and reshuffled, send RAN mobility information acknowledge message to Target RNC, it has carried out the preparation of accepting downlink data notification target RNC.

Step 311: target SRNC accomplishes message to new SGSN initiation reorientation complete process through sending reorientation.

Step 312: if the SRNC reorientation is the reorientation between the SGSN, new SGSN sends and transmits reorientation completion message to former SGSN.Former SGSN returns the affirmation of the reorientation of transmitting being accomplished message.

Step 313: if the SRNS reorientation is the reorientation between the SGSN SRNS; New SGSN sends and upgrades PDP (Packet Data Protocol Context; Packet data protocol) context request message (new SGSN address, SGSN tunnel endpoint identifier, agreed QoS) is given relevant GGSN.GGSN upgrades their PDP Context field, and returns and upgrade PDP Context response (Update PDP Context Response) message, carries GGSN tunnel endpoint identifier etc.

Step 314: after receiving forwarding reorientation completion message; Former SGSN sends Iu release command (Iu Release Command) message and gives source RNC; When RNC data forwarding timer expired, Iu of source RNC response discharged and accomplishes (Iu Release Complete) message;

After step 315:MS accomplished and to reconfigure process, if new Routing Area Identifier and former different, MS can initiate the Routing Area Update process.

The Routing Area Update process is for the MS current position information is registered in new SGSN, and with new SGSN information updating in HLR.One sub-set of the RA renewal process that the Routing Area Update in this flow process is partly just carried out is because MS is in the PMM-CONNECTED state.

Associating direct-cut operation and SRNS repositioning process

Associating direct-cut operation and SRNS reorientation are used for no Iur interface between the RNC, and this process is only carried out when MS is in packet domain mobile management-connection (PMM-CONNECTED) state.

When associating direct-cut operation and SRNS repositioning process are used to carry out by the direct-cut operation of UTRAN decision, the UTRAN side from the source RNC to Target RNC UTRAN is moved to CN (core net) tie point.In this process, Iu links by reorientation.If Target RNC and source RNC are connected on the same SGSN, then the inner repositioning process of SGSN SRNS is performed.If the SGSN that Target RNC is connected to is different with the SGSN that source RNC is connected to, then the SRNS repositioning process between SGSN is performed.Then carry out the Routing Area Update process between the SGSN after carrying out this process.

Sub-district/URA associated update and SRNS repositioning process

This process is only carried out for the MS that is in the PMM-CONNECTED state, and Iur carries the control signaling but user data of no use here.

Sub-district/URA associated update and SRNS reorientation are used for carrying out the sub-district when reselecting at UTRAN, the UTRAN side from the source SRNC to Target RNC UTRAN is moved to the CN tie point.In this process, Iu links by reorientation.

Routing Area Update

When the MS that adheres to detect it got into new RA or periodically RA upgrade timer and expire, just need carry out Routing Area Update.

SGSN also manages preceding RA through finding it, and detecting it is the inner Routing Area Update of SGSN.In this case, SGSN has the necessary information of MS, thereby need not switch new MS position informing GGSN or HLR so can not be GGSN, is not the content of this patent, and this patent is described the Routing Area Update between SGSN-spanning.In the Routing Area Update between SGSN-spanning; Has only MS not in the PMM connection status; New SGSN just sends PDP Context to GGSN and upgrades request, and in the PMM connection status, PDP Context change request is accomplished in service SRNS repositioning process or associating direct-cut operation and SRNS repositioning process.

The Routing Area Update flow process is seen Fig. 4 (based on 3GPP TS 23.060 R6 versions), and is specific as follows:

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

Step 402 is the Routing Area Update between SGSN if RA upgrades, and MS is in the past at PMM-IDLE (packet domain mobile management-free time) state; New SGSN sends SGSN context request message (preceding P-TMSI; Preceding RAI, preceding P-TMSI signature) to former SGSN, obtain MM and the PDP Context of MS.

Step 402a, former SGSN sends the SRNS context request message to source SRNS, and obtains the SRNS context request and reply.

Step 403, former SGSN sends the SGSN context request to new SGSN and replys.

Step 404, the safe handling function.

Step 405 is the Routing Area Update between SGSN if RA upgrades, and new SGSN sends SGSN context acknowledgement message and gives former SGSN.

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

Step 407, if at step 402a, source SRNS has data in buffer, then source SRNS transmits data to former SGSN.

Step 408, former SGSN transmits data to new SGSN.

Step 409; If it is the Routing Area Update between SGSN that RA upgrades; And MS is not in the PMM connection status, and new SGSN sends the PDP Context request of upgrading (being also referred to as PDP Context change request) message to former GGSN, and former GGSN sends the PDP Context change to new SGSN and replys.

Step 410 is the RA renewal between SGSN if RA upgrades, and new SGSN upgrades the position through transmission, and (the SGSN number, the SGSN address is IMSI) to HLR, the change of SGSN notice HLR.

Step 411 is the RA renewal between SGSN if RA upgrades, and HLR sends canceling position (Cancel Location) (IMSI, cancellation type) and gives former SGSN, and former SGSN discharges former Iu resource.

Step 412 is the Routing Area Update between SGSN if RA upgrades, and HLR sends and inserts user data (IMSI, subscription data) message to new SGSN.

Step 413 is the RA renewal between SGSN if RA upgrades, and HLR confirms for new SGSN through sending Update Location Ack (IMSI).

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

Industry has proposed multiple new mobile management technology at present, and its essential idea is user identity and position separating technology.Existing relevant identify label and position separating (Subscriber Identifier & Locator Separation Network in the prior art; SILSN) solution; Like Host Based realization such as HIP technology; And based on the realization such as location identity separated protocol (LISP) technology of router; Have relevant multiple technologies to support again in every kind of realization, terminal use's identify label in these schemes (being expressed as AID in the literary composition) does not change in moving process, realizes the route and the forwarding of data message according to the position otherwise allocated station location marker (being expressed as RID in the literary composition) at terminal.

Fig. 5 shows the network architecture of a kind of identify label and position separating (SILSN); The network topology of this SILSN framework is divided into does not have overlapping Access Network and backbone network on the topological relation; Access Network is positioned at the edge of backbone network; Be responsible for the access at all terminals, the route and the forwarding of the inter-terminal data message that backbone network is responsible for inserting.In the network, AID remains constant in the moving process of terminal as the User Identity at terminal; RID is that network is the station location marker of terminal distribution, uses at backbone network.What should explain is, identify label can have different titles with station location marker at different SILSN frameworks, but essence is the same.

In the SILSN framework, the terminal can be one or more in portable terminal, fixed terminal and the roam terminals, like mobile phone, landline telephone, computer and server or the like.

In the SILSN framework, Access Network is used to the terminal two layers of (physical layer and link layer) access means, the physics access link between maintenance terminal and the ASR is provided.

In the SILSN framework, the main network element of backbone network comprises:

Access service router (Access Service Router; ASR) be the edge router of backbone network, be used to terminal distribution RID, the AID-RID map information of maintenance terminal; To the AID-RID binding relationship of ILR registration and inquiry terminal, and the route of realization data message and forwarding etc.Backbone network must be inserted through ASR in the terminal.ASR is the address information that the RID of terminal distribution comprises this ASR, points to this ASR in other words, and during as the destination address of data message, this data message will be routed to this ASR with this RID.

Generic router (Common Router, CR), the core router of backbone network is used for carrying out routing according to the RID of data message, and transmitting with RID is the data message of destination address.

Identity location register (Identity Location Register; ILR); ILR is used to preserve and safeguard the identify label and the station location marker map information at home subscriber terminal, also is written as the AID-RID map information in the literary composition, handles registration to terminal location, goes registration and inquiry;

Alternatively, backbone network can also comprise:

(Internet Service Router ISR), has the interface with traditional IP, ASR and ILR to the interconnect services node, is used to realize interconnecting of identity, locator separation network and traditional IP.

Can find out that ASR is this terminal distribution RID in order to realize the normal forwarding of message in the time of need inserting at the terminal, and need, with the RID of the binding at this terminal among the renewal ILR to this user's of ILR registration AID and the binding of RID.In one example; ASR (also can be described as the link information of terminal and Correspondent Node for what this terminal was safeguarded at each terminal to client information; Or the correspondence information of terminal and Correspondent Node); The correspondence relationship information that wherein comprises this terminal AID and Correspondent Node AID thereof can also comprise the AID-RID map information at this terminal.

The WCDMA system can provide polytype service application for the user, but also has the problem on the plurality of applications, as:

GGSN is constant, exists route circuitous.The terminal is once connecting and is using in the professional process, and GGSN remains unchanged.Under the situation that the user is moved, might move on to the place far and nearer like this, thereby cause the path circuitous, cause transmission resource waste, time delay elongated apart from service source apart from GGSN.

Use the IP address of static publicly-owned address, can considerable restraint be arranged user's mobility as the terminal.Static public ip address can only be out from fixing gateway owing to route planning.In case move to far place, can't insert external network nearby.Inevitably cause route circuitous, cause transmission resource waste, time delay elongated.

Summary of the invention

The technical problem that the present invention solves provides a kind of motion management method, gateway node and core network, realizes supporting the mobile management of core net under identify label and the position separating framework, avoids route circuitous.

For solving the problems of the technologies described above, the invention provides a kind of motion management method,

Between service GPRS node (SGSN) in the repositioning process; When the former gateway node (GGSN) that the terminal is inserted is confirmed to need to switch GGSN according to update packet data protocol (PDP) context request of the new SGSN transmission at said terminal; The PDP Context at said terminal is pushed to said new GGSN, and notifies said new SGSN first address information of said new GGSN;

The address of the said new SGSN that comprises in the PDP Context of said new GGSN according to said terminal and tunnel endpoint identifier (TEID) mail to the downlink data at said terminal to said new SGSN;

Said new SGSN sends the upstream data at said terminal according to first address information of said new GGSN to said new GGSN.

Further; Said former GGSN is according to the address of the said new SGSN that comprises in the request of said renewal PDP Context; Through inquiring about local configuration or inquiring about second address information that off-site server obtains said new GGSN; And send the PDP Context PUSH message to said new GGSN according to said second address information that gets access to, the PDP Context at said terminal is pushed to said new GGSN;

After said new GGSN receives said PDP Context PUSH message, send the PDP Context propelling movement to said former GGSN and reply.

Further, said new GGSN comprises the indication of whether accepting to switch in the propelling movement of said former GGSN transmission PDP Context is replied.

Further, said former GGSN is according to the address of the said new SGSN that comprises in the request of said renewal PDP Context, determines whether that according to the information on load of local policy and/or said new GGSN needs switch GGSN.

Further, after said new GGSN receives said PDP Context PUSH message,, then, the said PDP Context propelling movement of sending comprises first address information of said new GGSN in replying if accept switching;

Said former GGSN receive PDP Context push reply after, first address information of said new GGSN is included in the renewal PDP Context response of sending new SGSN notice gives said new SGSN.

Further, said first address information comprises chain of command and medium face IP address, chain of command and the medium face TEID of said new GGSN;

Said former GGSN extends this as the address information of the GGSN that comprises in the said PDP Context response first address information of said new GGSN when sending the response of said renewal PDP Context to said new SGSN.

Further, if said terminal needs GGSN that protocol Data Unit (PDU) packet is carried out the ordering of PDU sequence number, then said new GGSN also comprises interim forwarding TEID, interim PDU sequence number in the said PDP Context propelling movement of sending is replied;

The indication of whether accepting to switch that said former GGSN comprises in replying according to said PDP Context propelling movement; If said new GGSN accepts switching; Then said former GGSN sends PDP Context to said new GGSN and switches message, comprises the up-downgoing PDU sequence number at said terminal.

Further, said former GGSN uses said interim forwarding TEID to issue the data at said terminal to said new GGSN.

Further, said former GGSN uses said interim PDU sequence number ordering to be transmitted to the data of said new GGSN.

Further, also comprise the identify label (AID) at said terminal in the said PDP Context PUSH message that said former GGSN sends;

After said new GGSN receives said PDP Context PUSH message, point to the new route station location marker (RID) of this GGSN for said terminal distribution.

Further, said new GGSN is that the said new RID of said terminal distribution is said second address information, or other address informations of said new GGSN.

Further, said former GGSN obtains said new RID through following mode:

Mode one, said new GGSN will notify for the said new RID of said terminal distribution to said former GGSN;

Mode two, second address information of the said new GGSN that said former GGSN gets access to according to the address of said new SGSN is the new RID at said terminal.

Further, said new GGSN or said former GGSN send the RID register requirement to the ownership identity location register (ILR) at said terminal, carry said new RID, and the ownership ILR at said terminal upgrades the RID at the said terminal of preserving.

Further, said former GGSN is according to the address of said new SGSN, and the step of second address information of said new GGSN is obtained in the local configuration of inquiry, is specially:

Local static configuration SGSN of GGSN and GGSN mapping table, said former GGSN gets access to second address information of said new GGSN according to the said mapping table of the address search of said new SGSN.

Further, said method also comprises:

After said former GGSN gets access to new RID address, said terminal; Find the RID of Correspondent Node according to the AID-RID map information to the Correspondent Node at client information and said terminal at the said terminal of safeguarding; The GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID.

Further, after said former GGSN receives replying of all AID-RID map updatings notice, and/or at the repeating timer that is provided with to after date, stop to issue the data at said terminal to said new GGSN.

Further, said former GGSN is stopping after said new GGSN transmits, and sends to said new GGSN and stops forwarding message;

Said new GGSN receive said stop forwarding message after, said interim forwarding TEID that deletion distributes and/or interim PDU sequence number.

Further, said method also comprises:

After said former GGSN gets access to new RID address, said terminal, send the RID update notification, carry the AID at this terminal and new RID to interconnect services node (ISR).

Further, said method also comprises:

In the said repositioning process, the AID-RID map information to the Correspondent Node at client information and/or said terminal at the said terminal that said former GGSN will safeguard is sent to said new GGSN;

Said new GGSN preserves the AID-RID map information to the Correspondent Node at client information and/or said terminal at the said terminal of receiving.

Further; After said new GGSN is the new RID of said terminal distribution; AID-RID map information according to the said terminal of preserving and safeguarding to the Correspondent Node at client information and/or said terminal; Find the RID of Correspondent Node, the GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID; And/or, send the RID update notification to ISR, carry the AID at this terminal and new RID.

Further; After said new GGSN receives the AID-RID map information to the Correspondent Node at client information and/or said terminal at said terminal that said former GGSN transmits; The Correspondent Node received of inspection sends to the source AID in the data message at said terminal; As find that new Correspondent Node and/or RID upgrade successful Correspondent Node, the GGSN that then inserts to these Correspondent Nodes sends and/or repeating transmission RID update notification, and with the AID of new Correspondent Node register to this terminal in the client information.

Further, said method also comprises: in said repositioning process, and after said former GGSN receives the data message that sends to said terminal,

Said former GGSN sends to source wireless side network element with said data message through former SGSN; And be forwarded to said Target Wireless side network element through the forwarding passage between said source wireless side network element and Target Wireless side network element, issue said terminal by said Target Wireless side network element; Perhaps,

Said former GGSN sets up said data message in said repositioning process said former GGSN and the forwarding passage between the said new GGSN send to said new GGSN; Said new GGSN sends to said Target Wireless side network element with said data message through said new SGSN again, sends to said terminal by said Target Wireless side network element.

Further, said method also comprises:

Said new GGSN receives behind the data message at said terminal promptly the AID-RID map information at the Correspondent Node at the said terminal of local maintenance; And behind the AID-RID map information of receiving the Correspondent Node that former GGSN transmits, with the AID-RID map information merging of the Correspondent Node of the AID-RID map information of the said Correspondent Node of receiving and local maintenance.

Further, said method also comprises:

Said former GGSN is when safeguarding client information; Through flowing real-time testing mechanism and/or checking that source RID and source AID in the data message at said terminal find the Correspondent Node that new Correspondent Node maybe need be deleted; In the AID-RID map information that the AID and the RID of new Correspondent Node registered to said terminal, with the AID deletion to the Correspondent Node that needs deletion in the client information at said terminal to client information and Correspondent Node.

Further, said method also comprises:

In the Routing Area Update process that initiate at said terminal after said repositioning process is accomplished, the GGSN address of said terminal access is updated to the address of said new GGSN to the signatory register (HLR/HSS) of said terminal attaching.

Further, said method also comprises:

When GGSN or ISR inquired about the RID of said terminal AID correspondence to terminal attaching ILR, said terminal attaching ILR returned the RID at said terminal; Simultaneously, the GGSN or the ISR of said terminal attaching ILR record initiation inquiry;

When the RID of knowing said terminal changed, said terminal attaching ILR notified all to initiate the variation of the said terminal RID of GGSN, ISR of inquiry.

Further, said method also comprises:

After said terminal was linked into said new GGSN, said former GGSN or new GGSN used RID change notification all GGSNs, the ISR of the mode of broadcasting with said terminal.

Further, said repositioning process comprises at least:

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

The direct-cut operation and the SRNS repositioning process of associating; Perhaps,

Sub-district/URA associated update and SRNS repositioning process; Perhaps,

The Routing Area Update process.

The present invention also provides a kind of gateway node, is applied to WCDMA (WCDMA) or TD SDMA (TD-SCDMA) network, and said gateway node (GGSN) comprising:

Cut out control module; When the renewal PDP Context request to the incision terminal that the new SGSN that is used for receiving according to repositioning process between SGSN sends confirms that needs switch GGSN; The PDP Context at said terminal is pushed to the new GGSN that said terminal is cut, and notifies said new SGSN first address information of said new GGSN;

The incision control module; After being used to receive the PDP Context at the said terminal that former GGSN that the terminal cuts out pushes; The address of the said new SGSN that comprises in the PDP Context according to said terminal and TEID mail to the downlink data at said terminal to said new SGSN.

Further, said gateway node also comprises:

Incision GGSN selects module, be used to receive the request of said renewal PDP Context after, determine whether that according to the information on load of local policy and/or said new GGSN needs switch GGSN, and select the GGSN of incision.

Further; The said control module that cuts out is used for; Address according to the said new SGSN that comprises in the request of said renewal PDP Context; SGSN through inquiring about local static configuration and GGSN mapping table or inquiry off-site server obtain second address information of said new GGSN, send the PDP Context PUSH message according to said second address information that gets access to said new GGSN, and the PDP Context at said terminal is pushed to said new GGSN;

Said incision control module is used for, receive said PDP Context PUSH message after, send PDP Context to said former GGSN and push and reply, push at said PDP Context and comprise the indication of whether accepting to switch in replying.

Further, said incision control module also is used for, receive said PDP Context PUSH message after, if accept switching, then push first address information that also comprises said new GGSN in replying at the said PDP Context that sends;

The said control module that cuts out also is used for, receive PDP Context push reply after, first address information of said new GGSN is included in the renewal PDP Context response of sending new SGSN notice gives said new SGSN;

Wherein, said first address information comprises chain of command and medium face IP address, chain of command and the medium face TEID of said new GGSN.

Further, the said control module that cuts out also is used for, and when sending the response of said renewal PDP Context to said new SGSN, the address information of the GGSN that comprises in the said PDP Context response is extended this as first address information of said new GGSN.

Further, said gateway node also comprises RID distribution module and AID-RID mapping cache module;

Said RID distribution module is used for, and is that the incision terminal distribution points to the new RID of this GGSN, and the said new RID of distribution is said second address information, or other address informations of said new GGSN;

Said AID-RID mapping cache module is used for, and preserves the map information of this incision terminal AID and this new RID.

Further, said gateway node also comprises the RID Registering modules,

Said RID Registering modules is used for, and for after the incision terminal distribution points to the new RID of this GGSN, sends the RID register requirement to the ownership ILR at said terminal, carries said new RID, notifies the ownership ILR at said terminal to upgrade the RID at the said terminal of preserving;

Perhaps,, send the RID register requirement, carry said new RID, notify the ownership ILR at said terminal to upgrade the RID at the said terminal of preserving to the ownership ILR at said terminal according to the new RID that cuts out the terminal that obtains.

Further, said RID distribution module also is used for, and the said new RID that distributes is notified to said former GGSN;

Said RID Registering modules is used for, and the said new RID according to said RID distribution module notice obtains the new RID at said terminal; Perhaps, obtain the said new RID that cuts out the terminal through following mode: second address information of the said new GGSN that gets access to according to the address of said new SGSN is the new RID at said terminal.

Further, said gateway node also comprises opposite end maintenance of information module,

Said opposite end maintenance of information module is used for; Source RID and source AID through in the data message that flows real-time testing mechanism and/or inspection terminal find the Correspondent Node that new Correspondent Node maybe need be deleted; In the AID-RID map information that the AID and the RID of new Correspondent Node registered to said terminal, with the AID deletion to the Correspondent Node that needs deletion in the client information at said terminal to client information and Correspondent Node; And,

In repositioning process; The AID-RID map information of safeguarding to the Correspondent Node at client information and/or said terminal that cuts out the terminal is sent to new GGSN; Perhaps, preserve the AID-RID map information to the Correspondent Node at client information and/or said terminal at the incision terminal receive.

Further, said gateway node also comprises RID update notification module,

Said RID update notification module is used for, after for the new RID of incision terminal distribution, and perhaps behind the new RID that cuts out the terminal that receives said RID distribution module notice,

According to the AID-RID map information to the Correspondent Node at client information and said terminal at the said terminal of preserving and safeguarding, find the RID of Correspondent Node, the GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID; And/or, send the RID update notification to ISR, carry the AID at this terminal and new RID.

Further; Said opposite end maintenance of information module is used for; After receiving the AID-RID map information to the Correspondent Node at client information and said terminal at said terminal that said former GGSN transmits; The Correspondent Node received of inspection sends to the source AID in the data message at said terminal; As find that new Correspondent Node and/or RID upgrade successful Correspondent Node, the GGSN that then inserts to these Correspondent Nodes sends and/or repeating transmission RID update notification, and with the AID of new Correspondent Node register to this terminal in the client information.

Further, said gateway node comprises that also transmitting passage sets up module and data forwarding module,

Said forwarding passage is set up module and is used for, and sets up the forwarding passage between former GGSN and the new GGSN for cutting out the terminal;

Said data forwarding module is used for, receive issue the data message that cuts out the terminal after, issue said new GGSN through said forwarding passage; Perhaps, from said forwarding passage receive the incision terminal data message after, send to said Target Wireless side network element through said new SGSN, send to said terminal by said Target Wireless side network element.

Further, said gateway node also comprises data forwarding module,

Said data forwarding module is used for; Receive issue the data message that cuts out the terminal after; Send to source wireless side network element through former SGSN; And be forwarded to said Target Wireless side network element through the forwarding passage between said source wireless side network element and Target Wireless side network element, issue said terminal by said Target Wireless side network element.

Further; Said opposite end maintenance of information module also is used for; Receive behind the data message at incision terminal promptly AID-RID map information at the Correspondent Node at the said terminal of local maintenance; And behind the AID-RID map information of receiving the Correspondent Node that former GGSN transmits, with the AID-RID map information merging of the Correspondent Node of the AID-RID map information of the said Correspondent Node of receiving and local maintenance.

Further; The said control module that cuts out also is used for; In the Routing Area Update process that initiate at said terminal after said repositioning process is accomplished, the GGSN address of said terminal access is updated to the address of said new GGSN to the signatory register (HLR/HSS) of said terminal attaching.

The present invention also provides a kind of core network, and said core network comprises aforesaid gateway node, also comprises SGSN and ILR, wherein:

Said SGSN is used for, between SGSN in the repositioning process, to the former GGSN at terminal send upgrade the PDP Context request after, according to first address information of the new GGSN of the said former GGSN notice of receiving, send the upstream data at said terminal to said new GGSN;

Said ILR is used for, and the AID-RID mapping relations of storage terminal are accepted the request of inquiry that GGSN or ISR initiate, registration, change, deletion AID-RID mapping relations.

Further, said ILR also is used for, and receives GGSN or ISR when inquiring about the request of the corresponding RID of said terminal AID, returns the RID at said terminal according to the AID-RID mapping relations at the said terminal of storage; Simultaneously, the GGSN or the ISR of inquiry initiated in record;

When the RID of knowing said terminal changed, said ILR notified all to initiate the variation of the said terminal RID of GGSN, ISR of inquiry.

Further, said ILR also is used for, and is terminal distribution AID, and supports GGSN to use the AID of terminal international mobile subscriber identity (IMSI) inquiry terminal.

Above-mentioned motion management method and corresponding GGSN and WCDMA core net based on the WCDMA core net be except can realizing the location management function, and identify label and position separating that can support terminal avoid route circuitous.And can not influence the consistency of existing reorientation flow process, thereby have feasibility preferably as far as possible based on existing reorientation flow process.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

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

Fig. 2 a is service SRNS reorientation and the preceding sketch map of Routing Area Update;

Fig. 2 b is the sketch map behind service SRNS reorientation and the Routing Area Update;

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

Fig. 4 is the flow chart that the existing route district upgrades;

Fig. 5 is a kind of sketch map of the SILSN network architecture;

Fig. 6 has the sketch map of the WCDMA core net framework of SILSN framework for the present invention;

Fig. 7 is the method flow sketch map that is used to serve the SRNS reorientation of the embodiment of the invention one;

Fig. 8 is the direct-cut operation that is used to unite of the embodiment of the invention two and the method flow sketch map of SRNS reorientation;

Fig. 9 is the method flow sketch map that is used for sub-district/URA associated update and SRNS reorientation of the embodiment of the invention three;

Figure 10 is the method flow sketch map that is used for Routing Area Update of the embodiment of the invention four.

Embodiment

In order to solve the problems of the technologies described above, the present invention provides a kind of implementation method of the mobile management based on the WCDMA core net.Need to prove that because the TD-SCDMA core network architecture is consistent with the wcdma core network framework, the present invention program is suitable equally in the TD-SCDMA core network, the following stated WCDMA system refers to WCDMA and TD-SCDMA.

Motion management method provided by the invention mainly comprises:

Between SGSN in the repositioning process; When the former gateway node (GGSN) that the terminal is inserted confirms that according to the renewal PDP Context request of the new SGSN transmission at said terminal needs switch GGSN; The PDP Context at said terminal is pushed to said new GGSN, and notifies said new SGSN first address information of said new GGSN;

Address and the TEID of the said new SGSN that comprises in the PDP Context of said new GGSN according to said terminal mail to the downlink data at said terminal to said new SGSN;

Said new SGSN sends the upstream data at said terminal according to first address information of said new GGSN to said new GGSN.

Afterwards, this terminal is linked into new GGSN, is connected to outside packet data network through new GGSN.

In the said method, said former GGSN is according to the address of the said new SGSN that comprises in the request of said renewal PDP Context, determines whether to need to switch GGSN according to the information on load of local policy and/or (getting access to from external server) said new GGSN.

In the said method; Said former GGSN is according to the address of the new SGSN that comprises in the request of said renewal PDP Context; Through inquiring about local configuration or inquiring about second address information that off-site server obtains said new GGSN; And send the PDP Context PUSH message to said new GGSN according to said second address information that gets access to, the PDP Context at said terminal is pushed to said new GGSN;

After said new GGSN receives said PDP Context PUSH message, send the PDP Context propelling movement to said former GGSN and reply, in said PDP Context propelling movement is replied, comprise the indication of whether accepting to switch.

Further; If said new GGSN accepts switching; First address information that then in the said PDP Context propelling movement of sending is replied, also comprises said new GGSN; This first address information comprises new GGSN medium face and chain of command IP address, medium face and chain of command TEID (Tunnel Endpoint Identifier, tunnel endpoint identifier);

Said former GGSN receive PDP Context push reply after, first address information of said new GGSN is included in the renewal PDP Context response of sending new SGSN notice gives said new SGSN.

In the said method, former GGSN obtain new GGSN second address information (the IP address that can only comprise new GGSN) step can for:

Mode one, GGSN static configuration SGSN and GGSN mapping table, former GGSN should show to obtain second address of new GGSN according to the address search of new SGSN;

Mode two, former GGSN obtains second address of new GGSN according to the address search server of new SGSN.

Above-mentioned changing method also can have following characteristics:

This new GGSN is the new station location marker of this terminal distribution (RID), and this RID is informed former GGSN, and former GGSN preserves the map information of this terminal identity sign (AID) and this new RID, is used for data forwarding, and perhaps RID registers and notify the more RID of new terminal of opposite end.

This former GGSN or new GGSN send the RID register requirement to this terminal attaching identity location register (ILR), carry this new RID, and this terminal attaching ILR upgrades the RID at this terminal of preserving.

Said method also can comprise: former GGSN preserve and safeguard this terminal to client information, this opposite end information comprises the correspondence relationship information of AID of the Correspondent Node at this terminal AID and this terminal; In handoff procedure, this terminal that former GGSN will safeguard client information is sent to this new GGSN; Former GGSN or new GGSN find the address information of the gateway of this Correspondent Node access according to the AID to Correspondent Node in the client information at terminal, and the gateway that inserts to this Correspondent Node sends the RID update notification, carries this terminal AID and new RID.

Said method also can comprise: former GGSN preserves the also AID-RID map information of the Correspondent Node of maintenance terminal; In this handoff procedure; The AID-RID map information of the Correspondent Node at this terminal that former GGSN will safeguard is sent to new GGSN; New GGSN after receiving the data message at this terminal promptly at the AID-RID map information of the Correspondent Node at this terminal of local maintenance; And after receiving the AID-RID map information that former GGSN transmits, with receiving that this AID-RID map information map information and local maintenance merges.

Said method also can comprise: in handoff procedure; After former GGSN receives the data message of issuing this terminal; Issue source wireless side network element through former SGSN; This data message is forwarded to Target Wireless side network element through the forwarding passage between source wireless side network element and Target Wireless side network element, issues the terminal by Target Wireless side network element; Perhaps, in handoff procedure, set up the forwarding passage between former GGSN and the new GGSN; After former GGSN receives the data message of issuing the terminal; Issue new GGSN through transmitting passage, new GGSN issues Target Wireless side network element with this data message through new SGSN again, issues the terminal by this Target Wireless side network element.

In the said method, former GGSN obtain the new RID in terminal mode can for:

Mode one, new GGSN gives terminal distribution RID, sends to former GGSN through message;

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

Said method also can have following characteristics: when former GGSN gets access to new GGSN to behind the RID address of terminal distribution; Find the RID of Correspondent Node according to the AID-RID map information to the Correspondent Node at client information and this terminal at this terminal of safeguarding; The gateway (GGSN) that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID.

Said method also can have following characteristics: when former GGSN obtains new GGSN to behind the RID address of terminal distribution, send the RID update notification to ISR, carry the AID at this terminal and new RID.

Said method also can have following characteristics: former GGSN is when setting up this forwarding passage with new GGSN or after this forwarding passage is set up; Just the AID-RID map information to client information and/or this terminal communication opposite end with this terminal is sent to new GGSN; New GGSN is the RID that inquires Correspondent Node according to the AID to Correspondent Node in the client information that sends; The gateway that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID.

Said method also can comprise: former GGSN uses original message informing to give new SGSN address and TEID (comprising chain of command and the medium face) information of new GGSN; After new SGSN receives this message, use the address of new GGSN and TEID to send to new GGSN to the upstream data bag of terminal transmission.

Said method also can comprise: former GGSN sends to new GGSN with address and the TEID information of new SGSN, and the downlink message that new GGSN will send to the terminal sends to new SGSN, and new SGSN redispatches to the terminal.

Said method also can comprise: former GGSN sets up with new GGSN and transmits passage, and after this forwarding passage was set up, the message that sends to the terminal that former GGSN will receive was forwarded to new GGSN through this forwarding passage, and new GGSN sends to Target Wireless side network element through new SGSN again; If the packets need sequence number between GGSN and the terminal, new GGSN stamps sequence number with the downlink data packet that needs mail to the terminal.

Said method also can comprise: new GGSN receive that former GGSN sends to behind the client information; Check that former GGSN transmits the AID of Correspondent Node in the next data message of issuing the terminal; As find that new Correspondent Node and/or RID upgrade not successful Correspondent Node; The gateway (GGSN) that inserts to these Correspondent Nodes sends and/or retransmits the RID update notification, and with the AID of new Correspondent Node register to this terminal in the client information.

Said method also can comprise: after former GGSN receives replying of all AID-RID map updatings notice, and/or at the repeating timer that is provided with to after date, stop to issue the data at said terminal to said new GGSN.

Said method also can comprise: said former GGSN is stopping after said new GGSN transmits, and sends to said new GGSN and stops forwarding message;

Said new GGSN receive said stop forwarding message after, said interim forwarding TEID that deletion distributes and/or interim PDU (Protocol Data Unit, protocol Data Unit) sequence number.

Said method also can comprise: in the Routing Area Update process that initiate at reorientation complete process terminal, the GGSN address of this terminal access is updated to the address of this new GGSN to the signatory register (HLR/HSS) of this terminal attaching.

Said method also can have following characteristics: former GGSN is when safeguarding client information; Source RID and source AID through the opposite end data message received find new Correspondent Node, with the AID of new Correspondent Node and RID register to this terminal in client information and the AID-RID map information.

Said method also can have following characteristics: former GGSN is when safeguarding client information; Through flowing real-time testing mechanism and/or checking that the AID in the data message at this terminal finds the Correspondent Node that new Correspondent Node maybe need be deleted; With the AID of new Correspondent Node register to this terminal in the client information, with this AID deletion to the Correspondent Node that needs deletion in the client information.

Said method also can have following characteristics: use the registration notification mechanism of ILR, when promptly GGSN, ISR inquiry ILR were about the corresponding RID of terminal AID, ILR returned the RID at terminal; Simultaneously, ASR, the ISR that this inquiry initiated in the ILR record, when this terminal RID changed, ILR notified the variation of all ASR that initiated this inquiry, this terminal of ISR RID.

Said method also can have following characteristics: when ASR, ISR negligible amounts (network size is less), after GGSN was switched at the terminal, all GGSN, ISR were given in the change that former GGSN or new GGSN use the mode of broadcasting to send terminal RID.

Correspondingly; The present invention also provides a kind of core net, comprises critical point GPRS node (GGSN), service GPRS node (SGSN) and the home subscriber register (HLR/HSS) of contracting, and this core net also comprises identity location register (ILR); Internet service router (ISR) etc., wherein:

Said SGSN is arranged to: the function that is had with existing WCDMA is identical;

Said GGSN is set to cut the new station location marker of terminal distribution (RID), and preserves the identify label (AID) at this incision terminal and the map information between the new RID;

Said GGSN also is arranged to: the ILR to terminal attaching sends the RID register requirement, carries the new RID at this incision terminal, so that should cut the RID that the ILR of terminal attaching upgrades this incision terminal of preserving;

Said GGSN also is arranged to: after switch at the terminal, can notify other GGSN, ISR, the change of terminal RID.

Said GGSN also is arranged to: when switching or in a period of time, and can be with the GGSN that mails to the data forwarding that cuts out the terminal past terminal incision that receives.

GGSN can comprise: cut out control module, when it can be arranged in the terminal and cuts out, mail to relevant informations such as the PDP Context at terminal and sequence number the GGSN of terminal incision; The SGSN of the address notification terminal incision of the GGSN of terminal incision; Upgrade the change of terminal RID such as ILR and notice GGSN, ISR; Call packet forwarding module, mail to the GGSN that the data message at terminal is cut to the terminal; Behind the certain hour, be released to the resource that this cuts out terminal distribution;

The incision control module, it can be arranged to: after the re-positioning request of receiving the GGSN transmission that the terminal cuts out, calling the RID distribution module, is incision terminal distribution RID; Simultaneously, for this incision terminal set up with new SGSN between the PDP carrying (GGSN IP address, TEID); To send to the GGSN that the terminal cuts out for the above-mentioned information of incision terminal distribution.

The RID distribution module, it can be set to cut the new RID that terminal distribution is pointed to this GGSN, preserves the map information of this incision terminal AID and this new RID;

Packet forwarding module, it can be arranged to the data message that cuts out the terminal is transmitted processing;

AID-RID shines upon cache module, the binding relationship of buffer memory terminal AID, RID;

GGSN also can comprise opposite end maintenance of information module, and this opposite end maintenance of information module can be arranged to: maintenance terminal to client information, this opposite end information comprises the correspondence relationship information of AID of Correspondent Node at AID and this terminal at terminal;

GGSN cuts out control module and also can be arranged to: in handoff procedure; According to safeguard cut out the terminal to client information notice opposite end AID-RID mapping cache module change AID, RID mapping, notice opposite end maintenance of information module stop to safeguard this cut out the terminal to client information;

The incision control module of GGSN also can be arranged to: in handoff procedure, receive incision terminal that former GGSN transmits to client information, notify the opposite end maintenance of information module of this GGSN preserve and safeguard this incision terminal to client information;

GGSN also can comprise the RID update module; The RID update module of GGSN can be arranged to: the address that finds the gateway (GGSN) that this Correspondent Node inserts according to incision terminal or the AID to Correspondent Node in the client information that cuts out the terminal; The gateway that inserts to this Correspondent Node sends the RID update notification, carries this incision terminal or cuts out the AID at terminal and new RID.

GGSN can comprise that also incision GGSN selects module, after receiving the forwarding re-positioning request to the incision terminal that new SGSN sends, selects GGSN, can obtain incision GGSN address according to modes such as SGSN address lookup servers according to SGSN, GGSN binding table.

The incision control module of GGSN also can be arranged to: in handoff procedure, the incision terminal that GGSN that receiving terminal cuts out transmits to client information, notify the opposite end maintenance of information module of this GGSN to preserve and safeguard;

GGSN cuts out control module and also can be arranged to: the AID-RID map information of the Correspondent Node that cuts out the terminal that will safeguard is sent to the AID-RID mapping cache module of the GGSN of terminal incision.

The incision control module of GGSN also can be arranged to send the new RID for the incision terminal distribution to GGSN that the terminal cuts out;

The incision control module of GGSN also can be arranged in receive incision terminal that GGSN that the terminal cuts out transmits to behind the client information, call the RID update module and upgrade for the RID that the incision terminal is initiated to the opposite end.

GGSN also can comprise the map information maintenance module; This map information maintenance module can be arranged to: in handoff procedure; Receive behind the data message at incision terminal promptly AID-RID map information at the Correspondent Node at local maintenance this incision terminal, and the AID-RID map information of the Correspondent Node at this incision terminal of the GGSN transmission that the terminal of receiving is cut out and the AID-RID map information merging of local maintenance;

The packet forwarding module of GGSN can be arranged to transmit data message through following mode: the SGSN that the data message forwarding that issuing of will receiving cuts out the terminal cuts out to the terminal, with the SGSN of the data message forwarding of receiving of issuing the incision terminal to the terminal incision; Perhaps

GGSN can comprise that also transmitting passage sets up module, and this forwardings passage is set up module and can be arranged to: in handoff procedure, set up the forwarding passage between the GGSN that GGSN that the terminal cuts out and terminal cuts for cutting out the terminal; The packet forwarding module of GGSN can be arranged to transmit data message through following mode: receive issue the data message that cuts out the terminal after, through this forwarding passage issue the incision GGSN;

The opposite end maintenance of information module of GGSN also can be arranged to: preserve incision terminal that GGSN that the terminal cuts out sends to client information after; The GGSN that the inspection terminal cuts out transmits the AID of Correspondent Node in the next data message of issuing this incision terminal; As find new Correspondent Node, the AID of the Correspondent Node that this is new register to this incision terminal in the client information;

The RID update module of GGSN can be arranged to find through following mode the address information of the gateway (GGSN) that Correspondent Node inserts: the address information that inquires the gateway that this Correspondent Node inserts according to the AID of this terminal communication opposite end from the home subscriber subscribed services device (HLR/HSS) of local cache or Correspondent Node or dns server or ILR.

When the opposite end maintenance of information module of GGSN can be arranged to inquire about opposite end RID, add the opposite end information table; Receive that deletion was to client information when opposite end off-line deletion AID-RID buffer memory was bound.

The opposite end maintenance of information module of GGSN can be arranged to safeguard client information through following mode: through flow real-time testing mechanism and/or through the inspection terminal data message in AID; With the AID of the new Correspondent Node of finding register to this terminal in the client information, with the AID of the Correspondent Node of need deletion from this terminal to deleting the client information.

Said ILR is set to store the AID-RID mapping relations, accepts the request of inquiry that GGSN or ISR send, registration, change, deletion AID-RID mapping relations;

Said ILR also can be set to when receiving inquiry AID-RID mapping relations, store the initiation network element of this inquiry, and when the related RID of this AID changes (change, cancellation), the notice related network elements plays GGSN communication opposite end table role;

Said ILR also can be set to be terminal distribution AID, supports GGSN to use the AID of terminal IMSI inquiry terminal.

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

For the ease of setting forth the present invention, below will combine accompanying drawing and specific embodiment that the enforcement of technical scheme of the present invention is described in further detail.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.

Hereinafter, the invention provides a kind of identity position separating framework that in the WCDMA system, uses, the motion management method of the WCDMA core net of the identify label of support terminal and position separating in handoff procedure, circuitous to avoid route.Specifically, be with above-mentioned SILSN framework applications in the WCDMA system, realize not having fixed anchor point and switch.Need to prove that use the SILSN framework just in order to specify embodiments of the invention, flow process of the present invention also can be adaptable across other identity position separating framework.

SILSN framework and operation principle thereof according to the background technology record can be understood, and when the switching of striding ASR was moved at the terminal, the new ASR that cuts a side will be terminal distribution RID, the message that MS is mail in message that encapsulation MS sends and decapsulation; The former ASR that cuts out a side will delete the AID-RID map information at this terminal, and the message that mails to MS is to new ASR.Simultaneously, new ASR or former ASR need upgrade MS in the AID-RID of ILR mapping relations, and, if ASR, ISR use the AID-RID mapping to be buffered in this locality, need a kind of mechanism the AID-RID mapping is changed notice ASR, ISR.

Show a kind of framework of WCDMA core net of the SILSN of having framework at Fig. 6:

GGSN is used as the function of ASR, and interface S1 is arranged between the ILR, and interface S1 is used for the RID to ILR query communication opposite end, the AID-RID mapping relations of registration, change, deletion MS etc.

Signaling interface S2 and data-interface D2 are arranged between GGSN and the ISR, and signaling interface S2 is used for when GGSN switches, and the change that the relevant AID-RID of notice ISR binds also can be used for GGSN and notifies ISR registration, deletion AID-RID to bind.Data-interface D2 between GGSN and the ISR is used for GGSN and transmits the data that mail to external network of MS transmission and ISR mails to data from MS to GGSN to ISR.

The scope that the data-interface D3 of ISR and external network does not describe at this patent.

The present invention is not limited to above-mentioned framework.Because wireless access network possibly adopt other structure, Target RNC possibly be other wireless side network element in other frameworks.

In the reorientation set-up procedure based on above WCDMA core net framework, GGSN no longer needs grappling, can be circuitous to reduce route according to the switching that GGSN is carried out in the switching of SGSN.

Hereinafter is primarily aimed to realizing that no fixed anchor point switches the improvement of on original system, carrying out and describes, and comprises relevant function and flow process.

In the literary composition, when certain network element of description is handled the terminal switching as former side network element, claim that this terminal is for cutting out the terminal; When certain network element of description is handled the terminal switching as the target side network element, claim that this terminal is the incision terminal.In the literary composition, the network element that also Correspondent Node at terminal is inserted abbreviates the opposite end network element as; In addition, when the function of certain network element of statement, the user terminal that is linked into this network element is called the terminal, is called Correspondent Node with the user terminal of the user terminal communication that inserts this network element.

Embodiment one

Present embodiment is described the service SRNS repositioning process of no anchor point GGSN based on the WCDMA core net framework that Fig. 5 describes, the handoff procedure no data loss, and after switching was accomplished, the data message of MS carried out route through new GGSN, and is circuitous to reduce route.

As shown in Figure 7, the flow process of present embodiment service SRNS repositioning process comprises:

Step 701-711: with the step 301-311 of existing service SRNS reorientation flow process.

The new SGSN of step 712. transmits reorientation completion message through sending, the former SGSN of signaling, and the SRNS repositioning process is accomplished.Step 712 and step 713 can take place simultaneously.Step 712 is consistent with existing procedure step 312.

The new SGSN of step 713a sends to former GGSN and upgrades PDP Context request message (new SGSN address, SGSN TEID (tunnel endpoint identifier), agreed QoS etc.), with the step 313 of existing service SRNS reorientation flow process.

Steps A: after former GGSN receives and upgrades the PDP Context request message; According to the new SGSN address of carrying in the message; Whether decision need switch GGSN; Whether decision here need switch GGSN can also can be visited external server according to local policy and obtain modes such as information, if it is identical with existing flow not switch GGSN, present embodiment is mainly described the situation of switching GGSN.

If GGSN is switched in former GGSN decision, can be according to the address of new SGSN, the local configuration of inquiry, modes such as inquiry external server obtain the address of new GGSN; After obtaining new GGSN address, former GGSN sends the PDP Context PUSH message to new GGSN, can comprise the IMSI of MS in the PDP Context PUSH message, AID, PDP Context information (address and the TEID that comprise new SGSN), information such as the authentication information of MS.The purpose of PDP Context PUSH message is to notify new GGSN MS to need to switch here, and the relevant PDP Context of MS, authentication information etc. send to new GGSN, are not limited to a piece of news.

After the new GGSN of step B. receives the PDP Context PUSH message of former GGSN transmission; For MS distributes himself a address as the RID of MS; This RID can be the address (i.e. second address information) of accepting former GGSN message, also can be other IP addresses of a newly assigned new GGSN; Simultaneously; New GGSN is that the context of the MS that receives distributes GTP (GPRS Tunneling Protocol; GPRS Tunnel Protocol) tunnel (comprise chain of command and medium face TEID, be used for the upstream data bag that new SGSN sends) is used for packet follow-up and SGSN forwarding MS.

The new GGSN of step C1. sends the PDP Context PUSH message to former GGSN and replys, and replys to comprise whether new GGSN accepts switching, the IMSI of MS; (being used for follow-up GTP tunnel with new SGSN uses in new GGSN address; Can be identical with the IP address of accepting former GGSN message, also can be different), new GGSN chain of command and medium face TEID; The AID of MS; Be the RID that MS distributes, transmit TEID (if MS needs GGSN that the PDU packet is sorted with the PDU sequence number) temporarily, interim PDU sequence number information such as (if MS need GGSN that the PDU packet is sorted with the PDU sequence number).

The former GGSN of step C2. receives that the PDP Context PUSH message that new GGSN sends replys, if new GGSN does not accept switching, former GGSN can be according to strategy and another GGSN repeating step of selection of configuration A; Also can no longer switch trial, use existing procedure and new SGSN to set up the tunnel, accomplish service SRNS repositioning process.

If new GGSN accepts switching, former GGSN sends PDP Context to new GGSN and switches message, can comprise the IMSI of MS, AID, up-downgoing PDU sequence number information such as (if MS need GGSN that the PDU packet is sorted with the PDU sequence number).

If MS needs GGSN that descending PDU packet is sorted with the PDU sequence number, former GGSN begins the interim forwarding TEID of downlink data packet to new GGSN sent, and uses interim PDU sequence number; After receiving, new GGSN, use the medium face TEID of new SGSN to send to new SGSN with descending PDU sequence number ordering.

If MS does not need GGSN that descending PDU packet is sorted with the PDU sequence number, then former GGSN can use the medium face TEID of new SGSN to transmit to new SGSN.Do not need GGSN to the situation of descending PDU packet to MS with the ordering of PDU sequence number; New GGSN need not distribute interim forwarding TEID and interim PDU sequence number, and the PDP Context PUSH message is replied and need not be carried interim forwarding TEID and interim PDU sequence number among the step C1; Former GGSN is PDP Context switching message in new GGSN forwarding step C2 not, and new GGSN uses the medium face TEID of new SGSN to send to new SGSN when receiving the data that mail to MS.

Former GGSN is the upstream data bag of encapsulate forwarded MS directly, or transmits to new GGSN with the medium face TEID of new GGSN.

The former GGSN of step 713b. sends to new SGSN and upgrades the PDP Context response; Consistent with original process step 313 renewal PDP Context response message formats, but medium face TEID and chain of command TEID fill in medium face TEID and the chain of command TEID of the new GGSN that receives among the step C1; The GGSN address of user plane and the GGSN address of chain of command fill in the new GGSN that receives among the step C1 user plane the GGSN address and be used for the GGSN address of chain of command.After this step, new SGSN begins to new GGSN, rather than former GGSN sends upstream data.

The former GGSN of step D. can search the related opposite end GGSN of all MS (removing new GGSN) according to the communication opposite end table of MS, sends the message of MS AID-RID mapping change, and receives replying of AID-RID mapping change message.

Step e. former GGSN sends the message of AID-RID mapping change to ILR, and receives replying of ILR.

Step F. former GGSN receives that (GGSN, ISR after replying of message changed in the AID-RID that ILR) sends mapping, can stop to transmit data to new GGSN the deletion relevant information in all opposite ends; Simultaneously, send to new GGSN and to stop forwarding message, new GGSN receives the interim forwarding TEID and interim PDU sequence number that can delete distribution after this message.

If do not require the ordering of PDU sequence number, then can not send and stop forwarding message to new GGSN.

Step F also can be provided with repeating timer at former GGSN, behind timer expiry, stops forwarding message to new GGSN transmission.

Also can use aging mechanism to interim forwarding TEID with interim PDU sequence number, then can not send and stop forwarding message to new GGSN at new GGSN.

Step 714. receives transmits reorientation completion message, and former SGSN sends the Iu release command and gives source RNC.When RNC data forwarding timer expires, source RNC responds with the Iu Release complete.Step 714 is consistent with existing procedure step 314.

Step 715. MS initiates the Routing Area Update process, because MS is in the PMM-CONNECTED pattern, and a sub-set of the RA renewal process that it is just carried out.Step 715 is consistent with existing procedure step 315.

The present embodiment steps A is the change of the different existing procedures of this patent to F, by the PDP Context updating message triggering of new SGSN, is used for the seamless switching of GGSN.With associating direct-cut operation and SRNS reorientation flow process, the flow process difference of the sub-district/URA of associating and Serving Radio Network System reorientation is wireless side, does not therefore influence the description of the foregoing description.The present embodiment steps A can be used for the associating direct-cut operation of existing procedure and the sub-district of SRNS repositioning process and associating/URA renewal and SRNS repositioning process equally to F, by the PDP Context updating message triggering of new SGSN, realizes the seamless switching of GGSN.

In addition, present embodiment also can have following change example/alternative:

For example, among the step C2, former GGSN also can send to new GGSN with the AID-RID buffer memory of the communication opposite end of its preservation.

For example, in step D, there is multiple mode the notification communication opposite end:

Mode one, execution in step D not, an execution in step E, the renewal of the map information of AID-RID is notified by ILR;

Mode two is used the broadcast announcement mode.

For example; Also execution in step D not; Former GGSN transmits all data that mail to MS and gives new GGSN; And forwarding time is longer than the time of all GGSN buffer memory AID-RID mappings, guarantees that former GGSN transmits all opposite end GGSN because the AID-RID buffer memory is aging, and inquiry ILR obtains the packet before the new AID-RID mapping.

When receiving the data that mail to MS, former GGSN can notify opposite end network element (GGSN, ISR) MS to switch to new GGSN.

For example, step D and/or E also can be carried out by new GGSN, and the communication opposite end table that former GGSN can send the MS of buffer memory sends to new GGSN.

For example, if a plurality of PDP Contexts are arranged between former GGSN and the MS, former GGSN is when receiving last PDP Context Notification of Changes, and execution in step A-F disposablely passes to new GGSN with a plurality of PDP Contexts.

Embodiment two

The WCDMA core net framework that present embodiment is described based on Fig. 5 is described associating direct-cut operation and SRNS reorientation flow process, and after associating direct-cut operation and SRNS reorientation flow process were accomplished, MS was associated with new SGSN and new GGSN.

Step 801: source RNC initiates the associating direct-cut operation and the SRNS reorientation in PS territory.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 802: source RNC gives former SGSN (Old SGSN) through sending re-positioning request (Relocation Required) message, initiates the reorientation set-up procedure; The reorientation type that comprises in this re-positioning request, reason, cell-of-origin ID, Target cell ID, source RNC are to contents such as Target RNC transparent vessels.Different with step 702 is that reorientation type here is set to " relating to UE ".With existing associating direct-cut operation and SRNS reorientation flow process.

Step 803-807: with step 703-707 roughly the same, with existing associating direct-cut operation and SRNS reorientation flow process.

Step 808: source RNC gives MS through sending RRC message, triggers the execution of SRNS reorientation; The terminal is sent RRC message and is given Target RNC.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 809: source RNC sends to Target RNC through former SGSN, new SGSN and transmits RNC context (Forward SRNC Context) message.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 810: when Target RNC was found the terminal at its service area, Target RNC sent reorientation to new SGSN and detects (Relocation Detect) message.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 811: when Target RNC is received the RRC message that the terminal sends over (step 808), Target RNC sends reorientation to new SGSN and accomplishes (Relocation Complete) message.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 812: new SGSN transmits reorientation completion message through sending, the former SGSN of signaling, and the SRNS repositioning process is accomplished.Step 812 and step 813 can take place simultaneously.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 813a: new SGSN sends to former GGSN and upgrades PDP Context request message (new SGSN address, SGSN TEID (tunnel endpoint identifier), agreed QoS etc.), with existing associating direct-cut operation and SRNS reorientation flow process.

Steps A: with embodiment one steps A.

Step B: with embodiment one step B.

Step C1: with embodiment one step C1.

Step C2: with embodiment one step C2.

Step 913b: with embodiment one step 713b.

Step D: with embodiment one step D.

Step e: with embodiment one step e.

Step F: with embodiment one step F.

Step 814: receive and transmit reorientation completion message, former SGSN sends the Iu release command and gives source RNC.When RNC data forwarding timer expires, source RNC responds with the Iu Release complete.With existing associating direct-cut operation and SRNS reorientation flow process.

Step 815: position updating process, with existing associating direct-cut operation and SRNS reorientation flow process.

In addition, present embodiment also can have the change example identical with embodiment one.

Embodiment three

The WCDMA core net framework that present embodiment is described based on Fig. 5 is described the sub-district/URA and the SRNS reorientation flow process of uniting, and after the sub-district/URA of associating and SRNS reorientation flow process were accomplished, MS was associated with new SGSN and new GGSN.

Step 901: cell update (Cell Update) message is sent to source RNC in the terminal, perhaps sends URA Update or Cell Update or GRA Update.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 902-909: with embodiment one step 702-709 roughly the same.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 910: Target RNC sends cell update to the terminal and confirms (Cell Update Confirm) message, or sends URA Update Confirm or Cell Update Confirm or GRA Update Confirm; RAN mobility information acknowledge message (RAN Mobility Information Confirm) is sent to Target RNC in the terminal.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 911: when Target RNC is received the RAN mobility information acknowledge message that the terminal sends over (step 910), Target RNC sends reorientation to new SGSN and accomplishes (Relocation Complete) message.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 912: new SGSN transmits reorientation completion message through sending, the former SGSN of signaling, and the SRNS repositioning process is accomplished.Step 912 and step 913 can take place simultaneously.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 913a: new SGSN sends to former GGSN and upgrades PDP Context request message (new SGSN address, SGSN TEID (tunnel endpoint identifier), agreed QoS etc.), with the sub-district/URA and the SRNS reorientation flow process of existing associating.

Steps A: with embodiment one steps A.

Step B: with embodiment one step B.

Step C1: with embodiment one step C1.

Step C2: with embodiment one step C2.

Step 913b: with embodiment one step 713b.

Step D: with embodiment one step D.

Step e: with embodiment one step e.

Step F: with embodiment one step F.

Step 914: receive and transmit reorientation completion message, former SGSN sends the Iu release command and gives source RNC.When RNC data forwarding timer expires, source RNC responds with the Iu Release complete.Sub-district/URA and SRNS reorientation flow process with existing associating.

Step 915: position updating process, with the sub-district/URA and the SRNS reorientation flow process of existing associating.

In addition, present embodiment also can have the change example identical with embodiment one.

Embodiment four

The WCDMA core net framework that present embodiment is described based on Fig. 5 is described the Routing Area Update process, and after Routing Area Update was accomplished, MS was associated with new SGSN and new GGSN.

Step 1001-1008: 401-408 is identical with existing route district renewal process step.

The new SGSN of step 1009a sends to former GGSN and upgrades PDP Context request message (new SGSN address, SGSN TEID (tunnel endpoint identifier), agreed QoS etc.), with existing route district step of updating 409.

Steps A-C is identical among steps A-C and the embodiment one.

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

Step D-F is identical among step D-F and the embodiment one.

Step 1010-1019: 410-419 is identical with existing route district renewal process step.

In addition, present embodiment also can have the change example identical with embodiment one.

Because TD-SCDMA core net and WCDMA core net are used same architecture, so technical scheme of the present invention can be used for TD-SCDMA and similar framework core network equally.

According to above description, compared with prior art, identify label and position separating that the present invention can support terminal avoid route circuitous, and can not influence the consistency that has the reorientation flow process now as far as possible based on existing reorientation flow process, have feasibility preferably.

More than be merely preferred case study on implementation of the present invention; Be not limited to the present invention; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

Claims (46)

1. a motion management method is characterized in that,

Between service GPRS node (SGSN) in the repositioning process; When the former gateway node (GGSN) that the terminal is inserted is confirmed to need to switch GGSN according to update packet data protocol (PDP) context request of the new SGSN transmission at said terminal; The PDP Context at said terminal is pushed to said new GGSN, and notifies said new SGSN first address information of said new GGSN;

The address of the said new SGSN that comprises in the PDP Context of said new GGSN according to said terminal and tunnel endpoint identifier (TEID) mail to the downlink data at said terminal to said new SGSN;

Said new SGSN sends the upstream data at said terminal according to first address information of said new GGSN to said new GGSN.

2. the method for claim 1 is characterized in that,

Said former GGSN is according to the address of the said new SGSN that comprises in the request of said renewal PDP Context; Through inquiring about local configuration or inquiring about second address information that off-site server obtains said new GGSN; And send the PDP Context PUSH message to said new GGSN according to said second address information that gets access to, the PDP Context at said terminal is pushed to said new GGSN;

After said new GGSN receives said PDP Context PUSH message, send the PDP Context propelling movement to said former GGSN and reply.

3. method as claimed in claim 2 is characterized in that,

Said new GGSN comprises the indication of whether accepting to switch in the propelling movement of said former GGSN transmission PDP Context is replied.

4. method as claimed in claim 2 is characterized in that,

Said former GGSN is according to the address of the said new SGSN that comprises in the request of said renewal PDP Context, determines whether that according to the information on load of local policy and/or said new GGSN needs switch GGSN.

5. method as claimed in claim 3 is characterized in that,

After said new GGSN receives said PDP Context PUSH message,, then, the said PDP Context propelling movement of sending comprises first address information of said new GGSN in replying if accept switching;

Said former GGSN receive PDP Context push reply after, first address information of said new GGSN is included in the renewal PDP Context response of sending new SGSN notice gives said new SGSN.

6. method as claimed in claim 5 is characterized in that,

Said first address information comprises chain of command and medium face IP address, chain of command and the medium face TEID of said new GGSN;

Said former GGSN extends this as the address information of the GGSN that comprises in the said PDP Context response first address information of said new GGSN when sending the response of said renewal PDP Context to said new SGSN.

7. method as claimed in claim 3 is characterized in that,

If said terminal needs GGSN that protocol Data Unit (PDU) packet is carried out the ordering of PDU sequence number, then said new GGSN also comprises interim forwarding TEID, interim PDU sequence number in the said PDP Context propelling movement of sending is replied;

The indication of whether accepting to switch that said former GGSN comprises in replying according to said PDP Context propelling movement; If said new GGSN accepts switching; Then said former GGSN sends PDP Context to said new GGSN and switches message, comprises the up-downgoing PDU sequence number at said terminal.

8. method as claimed in claim 7 is characterized in that,

Said former GGSN uses said interim forwarding TEID to issue the data at said terminal to said new GGSN.

9. method as claimed in claim 7 is characterized in that,

Said former GGSN uses said interim PDU sequence number ordering to be transmitted to the data of said new GGSN.

10. method as claimed in claim 2 is characterized in that,

Also comprise the identify label (AID) at said terminal in the said PDP Context PUSH message that said former GGSN sends;

After said new GGSN receives said PDP Context PUSH message, point to the new route station location marker (RID) of this GGSN for said terminal distribution.

11. method as claimed in claim 10 is characterized in that,

Said new GGSN is that the said new RID of said terminal distribution is said second address information, or other address informations of said new GGSN.

12. method as claimed in claim 11 is characterized in that,

Said former GGSN obtains said new RID through following mode:

Mode one, said new GGSN will notify for the said new RID of said terminal distribution to said former GGSN;

Mode two, second address information of the said new GGSN that said former GGSN gets access to according to the address of said new SGSN is the new RID at said terminal.

13. like claim 10,11 or 12 described methods, it is characterized in that,

Said new GGSN or said former GGSN send the RID register requirement to the ownership identity location register (ILR) at said terminal, carry said new RID, and the ownership ILR at said terminal upgrades the RID at the said terminal of preserving.

14. method as claimed in claim 2 is characterized in that,

Said former GGSN is according to the address of said new SGSN, and the step of second address information of said new GGSN is obtained in the local configuration of inquiry, is specially:

Local static configuration SGSN of GGSN and GGSN mapping table, said former GGSN gets access to second address information of said new GGSN according to the said mapping table of the address search of said new SGSN.

15. method as claimed in claim 12 is characterized in that, said method also comprises:

After said former GGSN gets access to new RID address, said terminal; Find the RID of Correspondent Node according to the AID-RID map information to the Correspondent Node at client information and said terminal at the said terminal of safeguarding; The GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID.

16. method as claimed in claim 15 is characterized in that,

After said former GGSN receives replying of all AID-RID map updatings notice, and/or at the repeating timer that is provided with to after date, stop to issue the data at said terminal to said new GGSN.

17. like claim 7 or 16 described methods, it is characterized in that,

Said former GGSN is stopping after said new GGSN transmits, and sends to said new GGSN and stops forwarding message;

Said new GGSN receive said stop forwarding message after, said interim forwarding TEID that deletion distributes and/or interim PDU sequence number.

18., it is characterized in that said method also comprises like claim 12 or 15 described methods:

After said former GGSN gets access to new RID address, said terminal, send the RID update notification, carry the AID at this terminal and new RID to interconnect services node (ISR).

19. method as claimed in claim 10 is characterized in that, said method also comprises:

In the said repositioning process, the AID-RID map information to the Correspondent Node at client information and/or said terminal at the said terminal that said former GGSN will safeguard is sent to said new GGSN;

Said new GGSN preserves the AID-RID map information to the Correspondent Node at client information and/or said terminal at the said terminal of receiving.

20. method as claimed in claim 19 is characterized in that,

After said new GGSN is the new RID of said terminal distribution; AID-RID map information according to the said terminal of preserving and safeguarding to the Correspondent Node at client information and/or said terminal; Find the RID of Correspondent Node; The GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID; And/or, send the RID update notification to ISR, carry the AID at this terminal and new RID.

21. method as claimed in claim 20 is characterized in that,

After said new GGSN receives the AID-RID map information to the Correspondent Node at client information and/or said terminal at said terminal that said former GGSN transmits; The Correspondent Node received of inspection sends to the source AID in the data message at said terminal; As find that new Correspondent Node and/or RID upgrade not successful Correspondent Node; The GGSN that then inserts to these Correspondent Nodes sends and/or retransmits the RID update notification, and with the AID of new Correspondent Node register to this terminal in the client information.

22. the method for claim 1 is characterized in that, said method also comprises: in said repositioning process, and after said former GGSN receives the data message that sends to said terminal,

Said former GGSN sends to source wireless side network element with said data message through former SGSN; And be forwarded to said Target Wireless side network element through the forwarding passage between said source wireless side network element and Target Wireless side network element, issue said terminal by said Target Wireless side network element; Perhaps,

Said former GGSN sets up said data message in said repositioning process said former GGSN and the forwarding passage between the said new GGSN send to said new GGSN; Said new GGSN sends to said Target Wireless side network element with said data message through said new SGSN again, sends to said terminal by said Target Wireless side network element.

23., it is characterized in that said method also comprises like claim 19 or 21 described methods:

Said new GGSN receives behind the data message at said terminal promptly the AID-RID map information at the Correspondent Node at the said terminal of local maintenance; And behind the AID-RID map information of receiving the Correspondent Node that former GGSN transmits, with the AID-RID map information merging of the Correspondent Node of the AID-RID map information of the said Correspondent Node of receiving and local maintenance.

24., it is characterized in that said method also comprises like claim 19 or 21 described methods:

Said former GGSN is when safeguarding client information; Through flowing real-time testing mechanism and/or checking that source RID and source AID in the data message at said terminal find the Correspondent Node that new Correspondent Node maybe need be deleted; In the AID-RID map information that the AID and the RID of new Correspondent Node registered to said terminal, with the AID deletion to the Correspondent Node that needs deletion in the client information at said terminal to client information and Correspondent Node.

25. the method for claim 1 is characterized in that, said method also comprises:

In the Routing Area Update process that initiate at said terminal after said repositioning process is accomplished, the GGSN address of said terminal access is updated to the address of said new GGSN to the signatory register (HLR/HSS) of said terminal attaching.

26. the method for claim 1 is characterized in that, said method also comprises:

When GGSN or ISR inquired about the RID of said terminal AID correspondence to terminal attaching ILR, said terminal attaching ILR returned the RID at said terminal; Simultaneously, the GGSN or the ISR of said terminal attaching ILR record initiation inquiry;

When the RID of knowing said terminal changed, said terminal attaching ILR notified all to initiate the variation of the said terminal RID of GGSN, ISR of inquiry.

27. the method for claim 1 is characterized in that, said method also comprises:

After said terminal was linked into said new GGSN, said former GGSN or new GGSN used RID change notification all GGSNs, the ISR of the mode of broadcasting with said terminal.

28. the method for claim 1 is characterized in that,

Said repositioning process comprises at least:

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

The direct-cut operation and the SRNS repositioning process of associating; Perhaps,

Sub-district/URA associated update and SRNS repositioning process; Perhaps,

The Routing Area Update process.

29. a gateway node is characterized in that, is applied to WCDMA (WCDMA) or TD SDMA (TD-SCDMA) network, said gateway node (GGSN) comprising:

Cut out control module; When the renewal PDP Context request to the incision terminal that the new SGSN that is used for receiving according to repositioning process between SGSN sends confirms that needs switch GGSN; The PDP Context at said terminal is pushed to the new GGSN that said terminal is cut, and notifies said new SGSN first address information of said new GGSN;

The incision control module; After being used to receive the PDP Context at the said terminal that former GGSN that the terminal cuts out pushes; The address of the said new SGSN that comprises in the PDP Context according to said terminal and TEID mail to the downlink data at said terminal to said new SGSN.

30. gateway node as claimed in claim 29 is characterized in that, said gateway node also comprises:

Incision GGSN selects module, be used to receive the request of said renewal PDP Context after, determine whether that according to the information on load of local policy and/or said new GGSN needs switch GGSN, and select the GGSN of incision.

31. gateway node as claimed in claim 29 is characterized in that,

The said control module that cuts out is used for; Address according to the said new SGSN that comprises in the request of said renewal PDP Context; SGSN through inquiring about local static configuration and GGSN mapping table or inquiry off-site server obtain second address information of said new GGSN; Send the PDP Context PUSH message according to said second address information that gets access to said new GGSN, the PDP Context at said terminal is pushed to said new GGSN;

Said incision control module is used for, receive said PDP Context PUSH message after, send PDP Context to said former GGSN and push and reply, push at said PDP Context and comprise the indication of whether accepting to switch in replying.

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

Said incision control module also is used for, receive said PDP Context PUSH message after, if accept switching, then push first address information that also comprises said new GGSN in replying at the said PDP Context that sends;

The said control module that cuts out also is used for, receive PDP Context push reply after, first address information of said new GGSN is included in the renewal PDP Context response of sending new SGSN notice gives said new SGSN;

Wherein, said first address information comprises chain of command and medium face IP address, chain of command and the medium face TEID of said new GGSN.

33. gateway node as claimed in claim 32 is characterized in that,

The said control module that cuts out also is used for, and when sending the response of said renewal PDP Context to said new SGSN, the address information of the GGSN that comprises in the said PDP Context response is extended this as first address information of said new GGSN.

34. gateway node as claimed in claim 31 is characterized in that, said gateway node also comprises RID distribution module and AID-RID mapping cache module;

Said RID distribution module is used for, and is that the incision terminal distribution points to the new RID of this GGSN, and the said new RID of distribution is said second address information, or other address informations of said new GGSN;

Said AID-RID mapping cache module is used for, and preserves the map information of this incision terminal AID and this new RID.

35. gateway node as claimed in claim 34 is characterized in that, said gateway node also comprises the RID Registering modules,

Said RID Registering modules is used for, and for after the incision terminal distribution points to the new RID of this GGSN, sends the RID register requirement to the ownership ILR at said terminal, carries said new RID, notifies the ownership ILR at said terminal to upgrade the RID at the said terminal of preserving;

Perhaps,, send the RID register requirement, carry said new RID, notify the ownership ILR at said terminal to upgrade the RID at the said terminal of preserving to the ownership ILR at said terminal according to the new RID that cuts out the terminal that obtains.

36. gateway node as claimed in claim 34 is characterized in that,

Said RID distribution module also is used for, and the said new RID that distributes is notified to said former GGSN;

Said RID Registering modules is used for, and the said new RID according to said RID distribution module notice obtains the new RID at said terminal; Perhaps, obtain the said new RID that cuts out the terminal through following mode: second address information of the said new GGSN that gets access to according to the address of said new SGSN is the new RID at said terminal.

37., it is characterized in that said gateway node also comprises opposite end maintenance of information module like claim 34 or 36 described gateway nodes,

Said opposite end maintenance of information module is used for; Source RID and source AID through in the data message that flows real-time testing mechanism and/or inspection terminal find the Correspondent Node that new Correspondent Node maybe need be deleted; In the AID-RID map information that the AID and the RID of new Correspondent Node registered to said terminal, with the AID deletion to the Correspondent Node that needs deletion in the client information at said terminal to client information and Correspondent Node; And,

In repositioning process; The AID-RID map information of safeguarding to the Correspondent Node at client information and/or said terminal that cuts out the terminal is sent to new GGSN; Perhaps, preserve the AID-RID map information to the Correspondent Node at client information and/or said terminal at the incision terminal receive.

38. gateway node as claimed in claim 35 is characterized in that, said gateway node also comprises RID update notification module,

Said RID update notification module is used for, after for the new RID of incision terminal distribution, and perhaps behind the new RID that cuts out the terminal that receives said RID distribution module notice,

According to the AID-RID map information to the Correspondent Node at client information and said terminal at the said terminal of preserving and safeguarding, find the RID of Correspondent Node, the GGSN that inserts to said Correspondent Node sends the RID update notification, carries the AID at this terminal and new RID; And/or, send the RID update notification to ISR, carry the AID at this terminal and new RID.

39. gateway node as claimed in claim 38 is characterized in that,

Said opposite end maintenance of information module is used for; After receiving the AID-RID map information to the Correspondent Node at client information and said terminal at said terminal that said former GGSN transmits; The Correspondent Node received of inspection sends to the source AID in the data message at said terminal; As find that new Correspondent Node and/or RID upgrade not successful Correspondent Node; The GGSN that then inserts to these Correspondent Nodes sends and/or retransmits the RID update notification, and with the AID of new Correspondent Node register to this terminal in the client information.

40. gateway node as claimed in claim 29 is characterized in that, said gateway node comprises that also transmitting passage sets up module and data forwarding module,

Said forwarding passage is set up module and is used for, and sets up the forwarding passage between former GGSN and the new GGSN for cutting out the terminal;

Said data forwarding module is used for, receive issue the data message that cuts out the terminal after, issue said new GGSN through said forwarding passage; Perhaps, from said forwarding passage receive the incision terminal data message after, send to said Target Wireless side network element through said new SGSN, send to said terminal by said Target Wireless side network element.

41. gateway node as claimed in claim 29 is characterized in that, said gateway node also comprises data forwarding module,

Said data forwarding module is used for; Receive issue the data message that cuts out the terminal after; Send to source wireless side network element through former SGSN; And be forwarded to said Target Wireless side network element through the forwarding passage between said source wireless side network element and Target Wireless side network element, issue said terminal by said Target Wireless side network element.

42. like claim 40 or 41 described gateway nodes, it is characterized in that,

Said opposite end maintenance of information module also is used for; Receive behind the data message at incision terminal promptly AID-RID map information at the Correspondent Node at the said terminal of local maintenance; And behind the AID-RID map information of receiving the Correspondent Node that former GGSN transmits, with the AID-RID map information merging of the Correspondent Node of the AID-RID map information of the said Correspondent Node of receiving and local maintenance.

43. gateway node as claimed in claim 29 is characterized in that,

The said control module that cuts out also is used for, and in the Routing Area Update process that initiate at said terminal after said repositioning process is accomplished, the GGSN address of said terminal access is updated to the address of said new GGSN to the signatory register (HLR/HSS) of said terminal attaching.

44. a core network is characterized in that, said core network comprises each the described gateway node like claim 29 to 36, also comprises SGSN and ILR, wherein:

Said SGSN is used for, between SGSN in the repositioning process, to the former GGSN at terminal send upgrade the PDP Context request after, according to first address information of the new GGSN of the said former GGSN notice of receiving, send the upstream data at said terminal to said new GGSN;

Said ILR is used for, and the AID-RID mapping relations of storage terminal are accepted the request of inquiry that GGSN or ISR initiate, registration, change, deletion AID-RID mapping relations.

45. core network as claimed in claim 44 is characterized in that,

Said ILR also is used for, and receives GGSN or ISR when inquiring about the request of the corresponding RID of said terminal AID, returns the RID at said terminal according to the AID-RID mapping relations at the said terminal of storage; Simultaneously, the GGSN or the ISR of inquiry initiated in record;

When the RID of knowing said terminal changed, said ILR notified all to initiate the variation of the said terminal RID of GGSN, ISR of inquiry.

46. like claim 44 or 45 described core networks, it is characterized in that,

Said ILR also is used for, and is terminal distribution AID, and supports GGSN to use the AID of terminal international mobile subscriber identity (IMSI) inquiry terminal.

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