CN101494882A

CN101494882A - Method for implementing ISR during switching process, network element equipment and network system

Info

Publication number: CN101494882A
Application number: CNA2008100002478A
Authority: CN
Inventors: 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-01-24
Filing date: 2008-01-24
Publication date: 2009-07-29
Anticipated expiration: 2028-01-24
Also published as: CN101494882B

Abstract

The invention discloses a method for realizing ISR in switching process, which comprises: acquiring the indication information expressing whether a user uses ISR between a 3GPP network and a non-3GPP network; when the indication information expresses that the user uses ISR between a 3GPP network and a non-3GPP network, maintaining the route to the source network gateway; and establishing a route to the target network gateway. Using the technical scheme provided in the invention, enables both the source network gateway and the target network gateway to receive the data packet needing to send to user, therefore, the user can receive the data packet from network side no matter at non-3GPP network or 3GPP network.

Description

The method of realizing ISR in switching process, network element device and network system

Technical field

The present invention relates to communication technical field, particularly the method for realizing ISR in switching process, network element device and network system.

Background technology

3GPP is in order to strengthen the competitiveness of future network, a kind of evolvement network (SystemArchitecture Evolution is proposed, SAE), in this evolvement network, can reduce subscriber equipment (the User Equipment under the idle pulley, UE) the mobile management flow process between different access networks, can use (the Idle mode signaling reduction of saving signaling under the idle pulley, ISR) function, such as working as the user at UMTS Terrestrial radio access network (UMTS Terrestrial Radio Access Network, UTRAN) with UMTS Terrestrial radio access network (the Evolved UMTS Terrestrial Radio AccessNetwork of evolution, when switching EUTRAN), can reduce the mobile management flow process, such as Routing Area Update (Routing Area Update, RAU)/tracing section updating (Tracking Area Update, TAU) flow process.

In research and practice process to prior art, the inventor finds that there is following problem in prior art:

Prior art provides at the 3GPP network and has used the ISR function, to save the scheme of mobile management flow process, for the switching (perhaps be referred to as mobile management) of user between 3GPP network and non-3GPP network and not mentioned, therefore, can't know how to realize ISR mechanism when UE under the idle pulley switches between 3GPP and non-3GPP.

Summary of the invention

The technical problem that the embodiment of the invention will solve provides a kind of method, network element device and network system of realizing ISR in switching process, realizes using when the user is switched between 3GPP network and non-3GPP network ISR mechanism.

In view of this, the embodiment of the invention provides:

Realize the method for saving signaling ISR under the idle pulley in a kind of handoff procedure, comprising:

Obtain whether the expression user uses ISR between 3GPP network and non-3GPP network indication information;

When described indication information is expressed as described user uses ISR between 3GPP network and non-3GPP network, remain to the route of source network gateway, be established to the route of objective network gateway.

A kind of network element device comprises:

Information acquisition unit is used to obtain whether the expression user uses ISR between 3GPP network and non-3GPP network indication information;

The routing management unit is used for remaining to the route of source network gateway when described indication information is expressed as described user uses ISR between 3GPP network and non-3GPP network, is established to the route of objective network gateway.

A kind of terminal equipment comprises:

The indication information receiving element is used to receive the whether indication information of use ISR between 3GPP network and non-3GPP network of expression user that network side sends;

Resource information is set up the unit, is used for being retained in the resource information in the source network, and being based upon the resource information in the objective network when described indication information is expressed as the user uses ISR between 3GPP network and non-3GPP network.

A kind of network system comprises:

The objective network gateway is used for sending whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to user's face anchor point network element;

User's face anchor point network element is used to receive described indication information, when described indication information is expressed as described user uses ISR between 3GPP network and non-3GPP network, remains to the route of source network gateway, and is established to the route of objective network gateway.

A kind of network system comprises:

User's face anchor point network element, be used to receive the whether indication information of use ISR between 3GPP network and non-3GPP network of expression user that subscriber equipment sends, when described indication information is expressed as described user uses ISR between 3GPP network and non-3GPP network, remain to the route of source network gateway, and be established to the route of objective network gateway.

A technical scheme in the technique scheme has following beneficial effect:

The embodiment of the invention is obtained whether the expression user uses ISR between 3GPP network and non-3GPP network indication information, when the user uses ISR between 3GPP network and non-3GPP network, remain to the route of source network gateway, and be established to the route of objective network gateway, source network gateway and objective network gateway all can be received to send to the user's data bag, therefore the user still can receive the packet that network side sends at the 3GPP network at the non-3GPP network, thereby guarantee user's business continuance, when being switched, the user can use ISR mechanism between 3GPP network and non-3GPP network, subsequent user can not trigger the route switching flow when mobile between 3GPP network and non-3GPP network like this, thereby saves UE switching flow between 3GPP network and non-3GPP network.

Another technical scheme in the technique scheme has following beneficial effect:

Terminal equipment receives whether the expression user uses ISR between 3GPP network and non-3GPP network indication information in the embodiment of the invention, when indication information is expressed as the user uses ISR between 3GPP network and non-3GPP network, be retained in the resource information in the source network, and be based upon resource information in the objective network, make UE registration simultaneously in 3GPP and non-3GPP network, subsequent user just can not trigger the mobile management flow process of UE between 3GPP network and non-3GPP network when mobile between 3GPP network and non-3GPP network like this, thereby saves UE switching flow between 3GPP network and non-3GPP network.

Description of drawings

The method flow diagram of the realizing ISR in switching process that Fig. 1 provides for the embodiment of the invention one;

The method flow diagram of the realizing ISR in switching process that Fig. 2 provides for the embodiment of the invention two;

The method flow diagram of the realizing ISR in switching process that Fig. 3 provides for the embodiment of the invention three;

The method flow diagram of the realizing ISR in switching process that Fig. 4 provides for the embodiment of the invention four;

The method flow diagram of the realizing ISR in switching process that Fig. 5 provides for the embodiment of the invention five;

The method flow diagram of the realizing ISR in switching process that Fig. 6 provides for the embodiment of the invention six;

The method flow diagram of the realizing ISR in switching process that Fig. 7 provides for the embodiment of the invention seven;

The method flow diagram of the realizing ISR in switching process that Fig. 8 provides for the embodiment of the invention eight;

The method flow diagram of the realizing ISR in switching process that Fig. 9 provides for the embodiment of the invention nine;

The method flow diagram of the realizing ISR in switching process that Figure 10 provides for the embodiment of the invention ten;

The network element device structure chart that Figure 11 provides for the embodiment of the invention 11;

The terminal equipment structure chart that Figure 12 provides for the embodiment of the invention 11.

Embodiment

The embodiment of the invention provides a kind of method of realizing ISR in switching process, comprising: obtain whether the expression user uses ISR between 3GPP network and non-3GPP network indication information; When described user uses ISR between 3GPP network and non-3GPP network, remain to the route of source network gateway, and be established to the route of objective network gateway.Wherein, the route of obtaining indication information and being established to the objective network gateway can be carried out by user's face anchor point network element, and user's face anchor point network element can be grouped data network gateway entity (Packet Data Network Gateway, PDN GW).

Consult Fig. 1, the embodiment of the invention one provides a kind of method of realizing ISR in switching process, this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, suppose service gateway entity (Serving Gateway, Serving GW) and adopt GPRS Tunnel Protocol (GPRS Tunneling Protocol between the PDN GW, GTP), switching type is general the switching (perhaps being referred to as to switch), and this method comprises:

Step 101, UE are established to the user's face tunnel between Non-3GPP GW and the PDN GW, are linked into the Non-3GPP network by Non-3GPP GW and PDN GW.

Wherein, for wlan system, the Non-3GPP GW in this step is evolution packet data gateway (EPDG, Evolved Packet Data Gateway); For micro-wave access global inter communication (WorldwideInteroperability for Microwave Access, WiMAX) system, Non-3GPPGW in this step is access business network gateway (Access Service Network Gateway, ASN GW); For code division multiple access insert (Code Division Multiple Access, CDMA) system, the Non-3GPP GW in this step be IAD (Access Gateway, AGW); (HighRate Packet Data, HRPD) network, the Non-3GPP GW in this step are packet data serving node (PDSN, Packet Date Service Node) for HRPD (high rate packet data).

After step 102, UE move to the 3GPP network, send Attach Request message to 3GPP network mobility managed network element, carry switching type sign and expression user in this Attach Request message and between 3GPP network and non-3GPP network, whether support the information of ISR ability, wherein, also can not carry the expression user in this Attach Request message and between 3GPP network and non-3GPP network, whether support the information of ISR ability, switching type label table in this step is shown general switching type, and promptly the user switches to the 3GPP network from the non-3GPP network.Wherein, the switching type sign can be taked but be not limited to following several mode:

1) increase type of attachment (Attach Type) field, this field of UE is set to represent that the switching of general switching type adheres to (Handover Attach).

2) (Handover Indication) field is indicated in the switching that increases the general switching type of expression.

3) increase the cause field, this field of UE is set to represent the Handover of general switching type.

The information of support ISR ability can be taked but be not limited to following several mode:

1) UE increases whether indicating bit information indication UE supports the ISR ability between 3GPP network and non-3GPP network information in the UE of Attach Request message network capabilities (UE Network Capability) cell.In UE network capabilities cell, carry ISR between 3GPP and non-3GPPFeature Mode cell as UE, if UE is supported between 3GPP network and the non-3GPP network and uses ISR, then ISR between 3GPP and non-3GPP Feature Mode cell value is set is 1 to UE, if UE is not supported between 3GPP network and the non-3GPP network and uses ISR, then ISRbetween 3GPP and non-3GPP Feature Mode cell value is set is 0 to UE; If perhaps UE is supported between 3GPP network and the non-3GPP network and uses ISR, then UE carries ISR between 3GPP and non-3GPP Support Indication information in UE network capabilities cell, if UE is not supported between 3GPP network and the non-3GPP network and uses ISR, then UE does not carry this indicating bit information in UE network capabilities cell.

2) UE carries ISR between 3GPP and non-3GPP FeatureMode cell in Attach Request message, if UE is supported between 3GPP network and the non-3GPP network and uses ISR, then ISR between 3GPP and non-3GPP Feature Mode cell value is set is 1 to UE, if UE is not supported between 3GPP network and the non-3GPP network and uses ISR, then ISR between3GPP and non-3GPP Feature Mode cell value is set is 0 to UE.

3) if being supported between 3GPP network and the non-3GPP network, UE uses ISR, then UE carries ISR between 3GPP and non-3GPP Support Indication information in Attach Request message, if UE is not supported between 3GPP network and the non-3GPP network and uses ISR, then UE does not carry this indicating bit information in Attach Request message.

Wherein, for the SAE system, 3GPP network mobility managed network element be mobile management network element (Mobility Management Entity, MME); For the GPRS/UMTS system, 3GPP network mobility managed network element be Serving GPRS Support Node (Serving GPRS Support Node, SGSN).

Step 103, UE, 3GPP network mobility managed network element, home subscriber server (Homesubscriber servers, HSS)/carry out authorizing procedure between Certificate Authority and the accounting server (AAA Server).

Executing location renewal and subscription data obtain flow process between step 104,3GPP network mobility managed network element and the HSS/AAA Server, obtain the PDN GW address information that UE uses in the non-3GPP network in this flow process.

The subscription data of UE can comprise the ISR subscription data of operator in this step, and this ISR subscription data comprises whether operator allows UE to use ISR between 3GPP network and non-3GPP network.The ISR subscription data can be taked but be not limited to following several mode:

1) HSS carries ISR between 3GPP and non-3GPP FeatureMode cell in the subscription data of UE, if operator supports that UE uses ISR between 3GPP network and non-3GPP network, then ISR between 3GPP and non-3GPP Feature Mode cell value is set is 1 to HSS, if operator does not support UE to use ISR between 3GPP network and non-3GPP network, then ISR between 3GPP and non-3GPP Feature Mode cell value is set is 0 to HSS.

2) if being supported between 3GPP network and the non-3GPP network, operator uses ISR, then HSS carries ISR between 3GPP and non-3GPP Support Indication information in subscription data, if operator does not support UE to use ISR between 3GPP network and non-3GPP network, then HSS does not carry this indicating bit information in subscription data.

Step 105,3GPP network mobility managed network element determine that according to the sign of the switching type in the step 102 access style of UE is that general the switching inserted, the UE that sends according to UE between 3GPP network and non-3GPP network the ISR ability and/or from the ISR subscription data of the operator that HSS obtains, determine whether UE uses ISR between 3GPP network and non-3GPP network.Possible mode has following several mode:

1) the ISR ability information according to UE decides.If UE is supported between 3GPP network and the non-3GPP network and uses ISR, then 3GPP network mobility managed network element determines that UE uses ISR between 3GPP network and non-3GPP network; If UE is not supported between 3GPP network and the non-3GPP network and uses ISR, then 3GPP network mobility managed network element determines that UE does not use ISR between 3GPP network and non-3GPP network.

2) the ISR subscription data according to operator decides.If the ISR subscription data of operator supports that UE uses ISR between 3GPP network and non-3GPP network, then 3GPP network mobility managed network element determines that UE uses ISR between 3GPP network and non-3GPP network; If the ISR subscription data of operator does not support UE to use ISR between 3GPP network and non-3GPP network, then 3GPP network mobility managed network element determines that UE does not use ISR between 3GPP network and non-3GPP network.

3) decide according to the ISR ability information of UE and the ISR subscription data of operator.If UE is supported in the ISR subscription data that uses ISR and operator between 3GPP network and the non-3GPP network and supports that UE uses ISR between 3GPP network and non-3GPP network, then 3GPP network mobility managed network element determines that UE uses ISR between 3GPP network and non-3GPP network, otherwise 3GPP network mobility managed network element is determined UE do not use ISR between 3GPP network and non-3GPP network.

If the 3GPP network is SAE, then 3GPP network mobility managed network element sends to Serving GW and creates the default bearer request message; If the 3GPP network is GPRS/UMTS, then 3GPP network mobility managed network element sends the default PDP Context request of creating to Serving GW, at above-mentioned establishment default bearer request message or create and carry the whether indication information of use ISR between 3GPP network and non-3GPP network of expression UE in the default PDP Context request, this indication information can be in the following way:

1), ISR sign position (ISR Flag).If UE can use ISR between 3GPP network and non-3GPP network, then " ISRFlag " indication is set to " True " or " 1 ", otherwise " ISRFlag " indication is set to " False " or " 0 ".If create the default bearer request message or create and do not carry this sign position in the default PDP Context request then the default UE of thinking can not use ISR between 3GPP network and non-3GPP network.

2), ISR indicating bit (ISR Indication).If UE can use ISR between 3GPP network and non-3GPP network, then create the default bearer request message or create and carry this sign position in the default PDP Context request, otherwise do not carry this sign position.

Step 106, Serving GW send the establishment carrying request or the PDP Context request of carrying Serving GW routing iinformation to PDN GW.Serving GW adds indication information and shows whether UE uses ISR between 3GPP network and non-3GPP network in creating carrying request or PDP Context request, the concrete mode of indication information can with step 105 in identical.Also carry the routing iinformation that IP connects access network type (IP-CAN Type, IPConnectivity Access Network Type) and Serving GW in establishment carrying request in this step or the PDP Context request.

Need to prove that the information that may carry in establishment carrying request in this step or the PDP Context request is that radio access technology types (RAT Type, RadioAccess Technology Type) rather than IP connect the access network type.Connect the access network type information with IP among the later patents embodiment and describe, if but the information of carrying is radio access technology types, its processing is the same.

Step 107, PDN GW obtain the PCC rule that UE preserves inside the Pass Home Network, judge whether above-mentioned IP-CAN Type is identical with IP-CAN Type in the PCC rule, if it is inequality, then send IP-CAN session modification request message and obtain the PCC rule that UE uses in the 3GPP network to PCRF, PCRF returns IP-CAN session modification acknowledge message to PDN GW, carries the PCC rule that UE uses in the 3GPP network in this acknowledge message.

Indication UE uses ISR in the message of PDN GW between 3GPP network and non-3GPP network if step 108 Serving GW issues, then PDN GW keeps the resource that UE uses (the banding cache list item (Binding CacheEntry) that uses as UE) in the non-3GPP network in the non-3GPP network of source, wherein the resource used in the non-3GPP network of source of UE comprises the route of PDN GW to non-3GPPGW, and PDN GW is the Non-3GPP GW that set up in the step 101 and the user's face tunnel between the PDN GW to the route of non-3GPP GW.PDN GW creates the resource that UE uses (the bearer context resource of using as UE) in the 3GPP network in the 3GPP network, comprising the routing iinformation of PDN GW according to Serving GW, be established to the route of Serving GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

Indication UE can not use ISR in the message of PDN GW between 3GPP network and non-3GPP network if Serving GW issues, and PDN GW can have following processing mode:

1) PDN GW initiates the resource releasing processing of UE in the non-3GPP network of source, is established to the route of Serving GW, and the descending route of PDN GW is switched to Serving GW, and PDN GW only issues Serving GW after receiving downlink data packet subsequently.

2) PDN GW does not initiate the resource releasing processing of UE in the non-3GPP network of source, but PDN GW is not established to the route of Serving GW, and the descending route of PDN GW still arrives non-3GPPGW, and PDN GW only issues non-3GPP GW after receiving downlink data subsequently.

Step 109, PDN GW return and create bearing response message or create the PDP Context response message to Serving GW.

Step 110, Serving GW return and create the default bearer response message or create default PDP Context response message to 3GPP network mobility managed network element.

Step 111,3GPP network mobility managed network element are initiated the radio bearer creation facilities program (CFP) and are adhered to the program of finishing to UE.3GPP network mobility managed network element is accepted to increase in the message indication information in adhering to of sending to UE and is represented whether UE uses ISR between 3GPP network and non-3GPP network in this program, in this step the concrete mode of indication information can with step 105 in identical.

Step 112, UE receive adhere to accept message after, if find that UE can use ISR between 3GPP network and non-3GPP network, then the resource information in the non-3GPP network of UE reservation source is (as the MM Context of UE in the non-3GPP network, information such as bearer context), create the resource information (as UE MM Context in 3GPP network, information such as bearer context) of UE in the 3GPP network simultaneously.UE just has the resource information in 3GPP network and the non-3GPP network simultaneously like this, and follow-up UE just can not trigger the switching flow between 3GPP network and the non-3GPP network when mobile between 3GPP network and non-3GPP network.

If UE finds oneself can not use ISR between 3GPP network and non-3GPP network, then the resource information in the non-3GPP network of UE deletion source is created the resource information of UE in the 3GPP network.UE just only has the resource information in the 3GPP network like this, and follow-up UE will trigger the switching flow between 3GPP network and the non-3GPP network when mobile between 3GPP network and non-3GPP network.

Step 113, PDN GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the 3GPP network, set up the dedicated bearing resource that UE uses in the 3GPP network.

Consult Fig. 2, the embodiment of the invention two provides a kind of method of realizing ISR in switching process, this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, suppose to adopt between Serving GW and the PDN GW and act on behalf of mobile Internet Protocol (Proxy Mobile Internet Protocol, PMIP), switching type is general the switching, and this method comprises:

Step 201-step 205 is identical with step 101-step 105.

Step 206, Serving GW send gateway control and quality of service policy rule request message arrives PCRF, and PCRF returns gateway control and quality of service policy rule response message is given Serving GW, carries the PCC rule that UE uses in the 3GPP network in the message.

Step 207, Serving GW return and create the default bearer response message or create default PDP Context response message to 3GPP network mobility managed network element.

Step 208,3GPP network mobility managed network element are initiated the radio bearer creation facilities program (CFP) and are adhered to the program of finishing to UE.3GPP network mobility managed network element is accepted to increase in the message indication information in adhering to of sending to UE and is represented whether UE uses ISR between 3GPP network and non-3GPP network in this program, in this step the concrete mode of indication information can with step 105 in identical.

Step 209, UE receive adhere to accept message after, concrete processing mode is with the processing of step 112.

Step 210, Serving GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the 3GPP network, set up the dedicated bearing resource that UE uses in the 3GPP network.

Step 211, Serving GW initiate to carry the binding update messages of Serving GW routing iinformation to PDN GW, increase indication information in this binding update messages and show whether UE uses ISR between 3GPP network and non-3GPP network, the concrete mode of indication information can with step 105 in identical, also carry IP-CAN Type or RAT Type information in this binding update messages.

Step 212, PDN GW obtain the PCC rule that UE preserves inside the Pass Home Network, judge whether the IP-CAN Type that presets in above-mentioned IP-CAN Type and the PCC rule is identical, if it is inequality, then send IP-CAN session modification request message and obtain the PCC rule that UE uses in the 3GPP network to PCRF, PCRF returns IP-CAN session modification acknowledge message to PDN GW, carries the PCC rule that UE uses in the 3GPP network in this acknowledge message.

Step 213, indication UE can use ISR in the agent binding update messages of PDN GW between 3GPP network and non-3GPP network if Serving GW issues, then PDN GW keeps the resource that UE uses (the banding cache list item (Binding Cache Entry) that uses as UE) in the non-3GPP network in the non-3GPP network of source, wherein the resource used in the non-3GPP network of source of UE comprises the route of PDN GW to non-3GPP GW, and PDN GW is the Non-3GPP GW that set up in the step 101 and the user's face tunnel between the PDN GW to the route of non-3GPP GW.PDN GW creates the resource that UE uses (the banding cache list item (Binding Cache Entry) that uses as UE) in the 3GPP network in the 3GPP network, comprising the routing iinformation of PDN GW according to Serving GW, be established to the route of Serving GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

Indication UE can not use ISR in the agent binding update messages of PDN GW between 3GPP network and non-3GPP network if Serving GW issues, and the concrete processing mode of PDN GW is with the processing in the step 108.

Step 214, PDN GW return proxy binding acknowledgment messages to Serving GW.

Consult Fig. 3, the embodiment of the invention three provides a kind of method of realizing ISR in switching process, this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, suppose and adopt client's mobile Internet Protocol (Client Mobile Internet Protocol between UE and the PDN GW, CMIP is as two stack mobile Internet version 6 agreements (DSMIPv6, Dual Stack MIPv6)), switching type is general the switching, and this method comprises:

Step 301-step 310 is identical with step 201-step 210.

Step 311, UE send binding update messages to PDN GW, and this message is carried expression UE and whether use the indication information of ISR and the routing iinformation of Serving GW between 3GPP network and non-3GPP network.Wherein, the concrete mode of indication information can with step 105 in identical.

Whether PDN GW uses the indication information of ISR and the routing iinformation of Serving GW according to expression UE in step 312, this step between 3GPP network and non-3GPP network, handles accordingly, and the concrete processing mode of PDN GW is with the processing in the step 108.

Step 313, PDN GW return binding acknowledgement message to UE.

Consult Fig. 4, the embodiment of the invention four provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, supposes and adopts the GTP agreement between Serving GW and the PDN GW, switching type switches for optimizing, and this method comprises:

Step 401, UE insert the non-3GPP network by non-3GPP gateway and PDN GW.

Step 402, UE send Attach Request message to 3GPP network mobility managed network element by the non-3GPP network, comprise in this Attach Request message: carry whether switching type sign and expression user support the ISR ability between 3GPP network and non-3GPP network information in this Attach Request message, the switching type in this step switches for optimizing.

Wherein, the switching type sign can be taked but be not limited to following several mode:

1) increase type of attachment (Attach Type) field, the optimization that this field of UE is set to represent to optimize switching type is switched and is adhered to (Optimized Handover Attach) or pre-registration adheres to (Pre-registration Attach).

2) increase optimization switching indication (Optimized HandoverIndication) field or pre-registration indication (Pre-registration Indication) field that switching type is optimized in expression.

3) increase the cause field, this field of UE is set to represent to optimize the OptimizedHandover or the Pre-registration of switching type.

Support the ISR ability the concrete mode of information can with step 102 in identical.

If UE does not carry the switching type sign in the message of this step, and 3GPP network mobility managed network element finds that the network element of this message from the non-3GPP network sends over, and then 3GPP network mobility managed network element thinks that attach procedure is because the non-3GPP network causes to the switching of the optimization between the 3GPP network.

Carry out authorizing procedure between step 403, UE, 3GPP network mobility managed network element, the HSS/AAA Server.

Executing location is upgraded and subscription data obtains flow process between step 404,3GPP network mobility managed network element and the HSS/AAA Server, and 3GPP network mobility managed network element obtains the address information of the PDN GW that UE inserts and the subscription data of UE in non-3GPP in this step.

The subscription data of UE can comprise the ISR subscription data of operator in this step, and this ISR subscription data comprises whether operator allows UE to use ISR between 3GPP network and non-3GPP network.The concrete mode of ISR subscription data can with step 104 in identical.

Step 405,3GPP network mobility managed network element determine that according to the sign of the switching type in the step 402 access style of UE is to optimize to switch to insert, according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator, determine whether UE uses ISR between 3GPP network and non-3GPP network.Determine mode can with step 105 in identical.

Because the access style of UE is to optimize to switch to insert, then the establishment default bearer context request that sends to Serving GW of 3GPP network mobility managed network element or create is not carried the whether indication information of use ISR between 3GPP network and non-3GPP network of expression UE in the default PDP Context request.

Step 406, Serving GW send to PDN GW and create carrying request or PDP Context request, carry IP-CAN Type or RAT Type in the above-mentioned request message.

Step 407, PDN GW obtain the PCC rule that UE preserves inside the Pass Home Network, judge whether the IP-CAN Type that presets in above-mentioned IP-CAN Type and the PCC rule is identical, if it is inequality, then send IP-CAN session modification request message and obtain the PCC rule that UE uses in the 3GPP network to PCRF, PCRF returns IP-CAN session modification acknowledge message to PDN GW, carries the PCC rule that UE uses in the 3GPP network in this acknowledge message.

Step 408, PDN GW create the resource (as the bearer context resource) that UE uses in the 3GPP network.PDN GW returns and creates bearing response message or create the PDP Context response message to ServingGW.

Step 409, Serving GW return and create the default bearer response message or create default PDP Context response message to 3GPP network mobility managed network element.

Step 410,3GPP network mobility managed network element are initiated the radio bearer that the radio bearer creation facilities program (CFP) is set up the default bearer correspondence.

Step 411,3GPP network mobility managed network element send to adhere to by the non-3GPP network accepts message to UE, carries whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in this message.

Step 412, UE receive adhere to accept message after, concrete processing mode is with the processing in the step 112.

Step 413, PDN GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the 3GPP network, set up the dedicated bearing resource that UE uses in the 3GPP network.

Step 414, UE move to the 3GPP network, send the message that expression UE has switched to the 3GPP network, and this message can be tracking area or Routing Area Update request message or service request information.

Step 415,3GPP network mobility managed network element send to be revised the carrying request or revises the PDP Context request to Serving GW, is revising the carrying request or is revising and carry whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in the PDP Context request.The concrete mode of indication information can with step 105 in identical.

Also carry indication PDNGW in modification carrying request in this step or the request of modification PDP Context and do not initiate the Indication message of UE in the resource releasing processing of source non-3GPP network.Wherein, indication PDN GW does not initiate UE and can adopt at the Indication message of the resource releasing processing of source non-3GPP network but be not limited to following several mode.

1) updating type (Update Type), this Update Type are set to pre-registration " Pre-registration " or optimize switch " Optimized Handover ".

2) " Cause " should " Cause " be set to: " Pre-registration " or " OptimizedHandover " or " Resource not Release ".

3) Pre-registration Indication or Optimized Handover Indication or Resource not Release Indication indicating bit information.

Step 416, Serving GW send the modification of carrying Serving GW routing iinformation to PDN GW and create carrying request or PDP Context request.Serving GW is revising to create to add in carrying request or the PDP Context request to show whether UE uses the indication information of ISR between 3GPP network and non-3GPP network, and above-mentioned modification is created and can also be comprised in carrying request or the PDP Context request that indication PDN GW does not initiate the Indication message of UE in the resource releasing processing of source non-3GPP network.

Show that wherein whether UE uses the indication information of ISR can be identical with the mode in the step 105 among the embodiment one between 3GPP network and non-3GPP network, indication PDN GW does not initiate UE can be identical with the mode in the step 415 at the Indication message of the resource releasing processing of source non-3GPP network.

Step 417, indication UE can use ISR in the message of PDN GW between 3GPP network and non-3GPP network if Serving GW issues, then PDN GW keeps the resource that UE uses (the banding cache list item (BindingCache Entry) that uses as UE) in the non-3GPP network in the non-3GPP network of source, wherein the resource used in the non-3GPP network of source of UE comprises the route of UE to non-3GPPGW, and according to the routing iinformation of Serving GW, be established to the route of Serving GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

Indication UE can not use ISR in the message of PDN GW between 3GPP network and non-3GPP network if Serving GW issues, PDN GW is established to the route of Serving GW, the descending route of PDNGW is switched to Serving GW, and PDN GW only issues Serving GW after receiving downlink data packet subsequently.

Wherein, when Serving GW issues indication UE in the message of PDN GW can not be when using ISR between 3GPP network and the non-3GPP network and indicate PDN GW not initiate the resource releasing processing of UE at source non-3GPP network, then PDN GW does not initiate the resource releasing processing of UE at source non-3GPP network.

Wherein, indication UE can not use ISR in the message of PDN GW between 3GPP network and non-3GPP network when Serving GW issues, and do not indicate PDN GW not initiate UE when the resource releasing processing of source non-3GPP network, then PDN GW initiates the resource releasing processing of UE at source non-3GPP network.

Step 418, PDN GW send to Serving GW and revise the carrying response or revise the PDP Context response.

Step 419, Serving GW send to 3GPP network mobility managed network element and revise the carrying response or revise the PDP Context response.

Step 420,3GPP network mobility managed network element are accepted message to UE transmission tracking area or Routing Area Update.

Step 421,3GPP network mobility managed network element network element in the non-3GPP network sends handoff completion message, carries whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in this message.The concrete mode of indication information can with step 105 in identical.

After network element is received handoff completion message in the Non-3GPP network, if this indication information indication UE can use ISR between 3GPP network and non-3GPP network, then network element is not initiated the resource releasing processing flow process of UE in the non-3GPP network in the non-3GPP network, otherwise network element is initiated the resource releasing processing flow process of UE in the non-3GPP network in the non-3GPP network.

Consult Fig. 5, the embodiment of the invention five provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, supposes and adopts the PMIP agreement between Serving GW and the PDN GW, switching type switches for optimizing, and this method comprises:

Step 501-step 505 is identical with step 401-step 405.

Step 506, Serving GW send gateway control and quality of service policy rule request message arrives PCRF, and PCRF returns gateway control and quality of service policy rule response message is given Serving GW, carries the PCC rule that UE uses in the 3GPP network in the message.

Step 507, Serving GW return and create the default bearer response message or create default PDP Context response message 3GPP network mobility managed network element.

Step 508,3GPP network mobility managed network element are initiated the radio bearer that the radio bearer creation facilities program (CFP) is set up the default bearer correspondence.

Step 509,3GPP network mobility managed network element send to adhere to by the non-3GPP network accepts message to UE, carries whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in this message.

Step 510, UE receive adhere to accept message after, concrete processing mode is with the processing in the step 112.

Step 511, Serving GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the 3GPP network, set up the dedicated bearing resource that UE uses in the 3GPP network.

Step 512, UE move to the 3GPP network, send the message that expression UE has switched to the 3GPP network, and this message can be tracking area or Routing Area Update request or service request information.

Step 513,3GPP network mobility managed network element send to be revised the carrying request or revises the PDP Context request to Serving GW, is revising the carrying request or is revising and carry whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in the PDP Context request.The concrete mode of indication information can with step 105 in identical.

Modification in this step carrying request or revise and also carry indication PDNGW in the PDP Context request and do not initiate the Indication message of UE in the resource releasing processing of source non-3GPP network, the concrete mode of this indication information can with step 415 in identical.

Step 514, Serving GW send the agent binding update messages that carries Serving GW routing iinformation to PDN GW, add in this message show UE whether between 3GPP network and non-3GPP network, use ISR indication information (the concrete mode of indication information can with step 105 in identical), can also comprise in this agent binding update messages and indicate PDN GW not initiate the indication information of UE in the resource releasing processing of source non-3GPP network.Wherein, indication PDN GW does not initiate UE and can adopt at the Indication message of the resource releasing processing of source non-3GPP network but be not limited to following several mode.

1) bindtype (Binding Type), this Binding Type is set to pre-registration " Pre-registration " or optimizes switch " Optimized Handover ".

Step 515 is identical with step 417, does not repeat them here.

Step 516, PDN GW send agent binding update to Serving GW and confirm.

Step 517-step 519 is identical with step 419-step 421.

Consult Fig. 6, the embodiment of the invention six provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the 3GPP network again after UE inserts the non-3GPP network, supposes and adopts the CMIP agreement between UE and the PDN GW, switching type switches for optimizing, and this method comprises:

Step 601-step 611 is identical with step 501-step 511.

Step 612, UE move to the 3GPP network, send the message that expression UE has switched to the 3GPP network, and this message can be tracking area or Routing Area Update request or service request information.

Step 613,3GPP network mobility managed network element send to be revised the carrying request or revises the PDP Context request to Serving GW.If 3GPP network mobility managed network element is found use CMIP agreement between UE and the PDN GW, then 3GPP network mobility managed network element is being revised the carrying request or is being revised not carry in the PDP Context request message and represent whether UE uses the indication information of ISR and expression PDN GW not to initiate the Indication message of UE in the resource releasing processing of source non-3GPP network between 3GPP network and non-3GPP network.

Step 614, Serving GW send to 3GPP network mobility managed network element and revise the carrying response or revise the PDP Context response.

Step 615,3GPP network mobility managed network element are accepted message to UE transmission tracking area or Routing Area Update.

Step 616,3GPP network mobility managed network element network element in the non-3GPP network sends handoff completion message, carries whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in this message.The concrete mode of indication information can with step 105 in identical.

Step 617, UE send binding update messages to PDN GW, this message is carried expression UE and whether used the indication information of ISR and the routing iinformation of Serving GW between 3GPP network and non-3GPP network, can also comprise in this binding update messages: indication PDN GW does not initiate the indication information of UE in the resource releasing processing of source non-3GPP network.Wherein the concrete processing of indication information is with the processing in the step 514.

Step 618, PDN GW receive that the processing behind the binding update messages is identical with step 417, do not repeat them here.

Step 619, PDN GW return binding acknowledgement message to UE.

Consult Fig. 7, the embodiment of the invention seven provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the non-3GPP network again after UE inserts the 3GPP network, supposes and adopts the PMIP agreement between Serving GW and the PDN GW, switching type is general the switching, and this method comprises:

Step 701, UE are linked into the 3GPP network by Serving GW and PDN GW.

Step 702, UE move to the non-3GPP network, carry out attach procedure, authentication procedure, authentication procedure.

In attach procedure and/or authentication procedure and/or authentication procedure, UE is to the non-3GPP access network element and/or non-3GPP GW sends the switching type sign and the expression user is switched the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, switching type label table in this step is shown general switching type, and the switching type sign can be identical with step 102 with the adoptable mode of information of supporting the ISR ability.Wherein, for the HRPD network, the non-3GPP access network element can for radio network controller (Radio Network Controller, RNC).

In authentication process, HSS/AAA can send to the ISR subscription data of operator non-3GPP access network element and/or non-3GPP GW.

The non-3GPP access network element is according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator, determine whether UE uses ISR between 3GPP network and non-3GPP network, and in authentication process, send whether expression UE uses ISR between 3GPP network and non-3GPP network indication information to non-3GPP GW.The non-3GPP access network element determines that whether UE uses the adoptable mode of ISR can be identical with step 105 between 3GPP network and non-3GPP network.Whether the Non-3GPP access network element sends expression UE to non-3GPP GW can be identical with step 105 in the adoptable mode of indication information of use ISR between 3GPP network and the non-3GPP network.

Perhaps, non-3GPP GW determines according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator whether UE uses ISR between 3GPP network and non-3GPP network.Non-3GPP GW determines that whether UE uses the adoptable mode of ISR can be identical with step 105 between 3GPP network and non-3GPP network.

Non-3GPP access network element or non-3GPP GW also can send whether expression UE uses ISR between 3GPP network and non-3GPP network indication information to UE in this step.

If UE finds oneself can use ISR between 3GPP network and non-3GPP network, then the resource information in the 3GPP network of UE reservation source is (as the MM Context of UE in the 3GPP network, information such as bearer context), create the resource information (as UE MM Context in non-3GPP network, information such as bearer context) of UE in the non-3GPP network simultaneously.UE just has the resource information in 3GPP network and the non-3GPP network simultaneously like this, and follow-up UE just can not trigger the switching flow between 3GPP network and the non-3GPP network when mobile between 3GPP network and non-3GPP network.

If UE finds oneself can not use ISR between 3GPP network and non-3GPP network, then the resource information in the 3GPP network of UE deletion source is created the resource information of UE in the non-3GPP network.UE just only has the resource information in the non-3GPP network like this, and follow-up UE will trigger the switching flow between 3GPP network and the non-3GPP network when mobile between 3GPP network and non-3GPP network.

Step 703, non-3GPP GW send gateway control and quality of service policy rule request message arrives PCRF, PCRF returns gateway control and quality of service policy rule response message is given non-3GPP GW, carries the PCC rule that UE uses in the non-3GPP network in the message.

Step 704, UE send layer 3 to non-3GPP GW and adhere to message.

Step 705, non-3GPP GW send layer 3 to UE and adhere to and finish message.

Wherein, if UE does not send the switching type sign and represent to switch certainly the information of whether supporting the ISR ability between 3GPP network and non-3GPP network to non-3GPP access network element and/or non-3GPP GW in the step 702, can in step 704, send above-mentioned information.Non-3GPP access network element and/or non-3GPP GW are according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator, determine UE whether after using ISR between 3GPP network and the non-3GPP network, the layer 3 in step 705 adheres to finish and carries the whether indication information of use ISR between 3GPP network and non-3GPP network of expression UE in the message.

Step 706, non-3GPP GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the non-3GPP network, set up the dedicated bearing resource that UE uses in the non-3GPP network.

Step 707, non-3GPP GW send the agent binding update that carries non-3GPP GW to PDN GW, increase indication information in this agent update message and show whether UE uses ISR between 3GPP network and non-3GPP network, the concrete mode of indication information can with step 105 in identical, also carry IP-CAN Type or RAT Type information in this binding update messages.。

Step 708, PDN GW obtain the PCC rule that UE preserves inside the Pass Home Network, judge whether the IP-CAN Type that presets in above-mentioned IP-CAN Type and the PCC rule is identical, if it is inequality, then send IP-CAN session modification request message and obtain the PCC rule that UE uses in the non-3GPP network to PCRF, PCRF returns IP-CAN session modification acknowledge message to PDN GW, carries the PCC rule that UE uses in the non-3GPP network in this acknowledge message.

Indication UE can use ISR in the agent binding update messages of PDN GW between 3GPP network and non-3GPP network if step 709 non-3GPP GW issues, then PDN GW keeps the resource that UE uses (bearer context (BearerContext) that uses as UE), wherein in the 3GPP network in the 3GPP network of source, the resource that UE uses in the 3GPP network of source comprises the route of PDN GW to ServingGW, wherein, PDN GW sets up in step 701 to the route of Serving GW.PDN GW creates the resource that UE uses in the non-3GPP network, comprising the routing iinformation of PDN GW according to non-3GPP GW, be established to the route of non-3GPP GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

Indication UE can not use ISR in the agent binding update messages of PDN GW between 3GPP network and non-3GPP network if non-3GPP GW issues, and PDN GW can have following processing mode:

1) PDN GW initiates the resource releasing processing of UE in the 3GPP network of source, is established to the route of non-3GPP GW, and the descending route of PDN GW is switched to non-3GPP GW, and PDNGW only issues non-3GPP GW after receiving downlink data packet subsequently.

2) PDN GW does not initiate the resource releasing processing of UE in the 3GPP network of source, but PDN GW is not established to the route of non-3GPP GW, and the descending route of PDN GW still arrives Serving GW, and PDNGW only issues Serving GW after receiving downlink data subsequently.

Step 710, PDN GW return proxy binding acknowledgment messages to non-3GPP GW.

Consult Fig. 8, the embodiment of the invention eight provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the non-3GPP network again after UE inserts the 3GPP network, supposes and adopts the CMIP agreement between UE and the PDN GW, switching type is general the switching, and this method comprises:

Step 801-step 806 is identical with step 701-step 706.

Step 807, UE send binding update messages to PDN GW, and this message is carried expression UE and whether use the indication information of ISR and the routing iinformation of non-3GPP GW between 3GPP network and non-3GPP network.

Indication UE can use ISR in the message of PDN GW between 3GPP network and non-3GPP network if step 808 UE issues, then PDN GW keeps the resource that UE uses (bearer context (Bearer Context) that uses as UE), wherein in the 3GPP network in the 3GPP network of source, the resource that UE uses in the 3GPP network of source comprises the route of PDN GW to Serving GW, and PDNGW sets up in step 801 to the route of Serving GW.PDN GW creates the resource that UE uses in the non-3GPP network, comprising the routing iinformation of PDN GW according to non-3GPP GW, be established to the route of non-3GPP GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

Indication UE can not use ISR in the message of PDN GW between 3GPP network and non-3GPP network if UE issues, and PDN GW can have following processing mode:

Step 809, PDN GW return binding acknowledgement message to UE.

Consult Fig. 9, the embodiment of the invention nine provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the non-3GPP network again after UE inserts the 3GPP network, supposes and adopts the PMIP agreement between Serving GW and the PDN GW, switching type switches for optimizing, and this method comprises:

Step 901, UE are linked into the 3GPP network by Serving GW and PDN GW.

Step 902, UE carry out specific attach procedure, authentication and the authentication procedure of non-3GPP network by the 3GPP network.

In attach procedure, UE is to the non-3GPP access network element and/or non-3GPP GW sends the switching type sign and the expression user is switched the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, switching type label table in this step is shown the optimization switching type, and 402 modes that provided of can taking steps are provided switching type.

If UE does not carry the switching type sign in the message of this step, and the non-3GPP access network element finds that this message sends over from 3GPP network side network element, and then the non-3GPP access network element thinks that the specific attach procedure of non-3GPP network is because the 3GPP network causes to the switching of the optimization between the non-3GPP network.

The non-3GPP access network element is according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator, determine whether UE uses ISR between 3GPP network and non-3GPP network, and in authentication process, send whether expression UE uses ISR between 3GPP network and non-3GPP network indication information to non-3GPP GW.The non-3GPP access network element determines that whether UE uses the adoptable mode of ISR can be identical with step 105 between 3GPP network and non-3GPP network.Whether the Non-3GPP access network element sends expression UE to non-3GPP GW can be identical with step 105 in the adoptable mode of indication information of use ISR between 3GPP network and the non-3GPP network, and this indication information can send to non-3GPP GW by the Non-3GPP access network element in authentication or authentication procedure process.

Non-3GPP access network element or non-3GPP GW also can send whether expression UE uses ISR between 3GPP network and non-3GPP network indication information to UE in this step.The concrete processing mode of UE is with the processing in the step 702.

Step 903, non-3GPP GW send gateway control and quality of service policy rule request message arrives PCRF, PCRF returns gateway control and quality of service policy rule response message is given non-3GPP GW, carries the PCC rule that UE uses in the non-3GPP network in the message.

Step 904, UE are by layer 3 attach procedure in the 3GPP network-triggered non-3GPP network.

Step 905, non-3GPP GW send layer 3 to UE and adhere to and finish message.

Wherein, if UE does not send the switching type sign and represent to switch certainly the information of whether supporting the ISR ability between 3GPP network and non-3GPP network to non-3GPP access network element and/or non-3GPP GW in the step 902, can in step 904, send above-mentioned information.If in the message of step 904, do not carry the switching type sign, and the non-3GPP access network element finds that this message sends over from 3GPP network side first network element, and then the non-3GPP access network element thinks that the specific attach procedure of non-3GPP network is because the 3GPP network causes to the switching of the optimization between the non-3GPP network.

Non-3GPP access network element and/or non-3GPP GW are according to the ISR ability of UE between 3GPP network and non-3GPP network and/or the ISR subscription data of operator, determine UE whether after using ISR between 3GPP network and the non-3GPP network, the layer 3 in step 905 adheres to finish and carries the whether indication information of use ISR between 3GPP network and non-3GPP network of expression UE in the message.

Step 906, non-3GPP GW initiate network side dedicated bearing active program according to the PCC rule that UE uses in the non-3GPP network, set up the dedicated bearing resource that UE uses in the non-3GPP network.

Step 907, UE move to the non-3GPP network, and the logical non-3GPP access network element of UE sends the relevant access message of non-3GPP network to non-3GPP GW.

Step 908, non-3GPP GW send the agent binding update of the routing iinformation that carries non-3GPP GW to PDN GW, increase indication information in this agent update message and show whether UE uses ISR between 3GPP network and non-3GPP network, the concrete mode of indication information can with step 105 in identical, also carry the routing iinformation of IP-CAN Type or RAT Type and non-3GPPGW in this agent binding update messages.

This agent binding update messages can also carry indication PDN GW and not initiate the Indication message of UE in the resource releasing processing of source 3GPP network.Wherein, indication PDN GW does not initiate UE and can adopt implementation in the step 415 at the Indication message of the resource releasing processing of source 3GPP network.

Step 909, PDN GW obtain the PCC rule that UE preserves inside the Pass Home Network, judge whether the IP-CAN Type that presets in above-mentioned IP-CAN Type and the PCC rule is identical, if it is inequality, then send IP-CAN session modification request message and obtain the PCC rule that UE uses in the non-3GPP network to PCRF, PCRF returns IP-CAN session modification acknowledge message to PDN GW, carries the PCC rule that UE uses in the non-3GPP network in this acknowledge message.

Indication UE can use ISR in the agent binding update messages of PDN GW between 3GPP network and non-3GPP network if step 910 non-3GPP GW issues, then PDN GW keeps the resource that UE uses (bearer context (BearerContext) that uses as UE), wherein in the 3GPP network in the 3GPP network of source, the resource that UE uses in the 3GPP network of source comprises the route of PDN GW to ServingGW, and PDN GW sets up in step 901 to the route of Serving GW.PDN GW creates the resource that UE uses in the non-3GPP network, comprising the routing iinformation of PDN GW according to non-3GPPGW, be established to the route of non-3GPP GW, at this moment, descending Serving GW and the non-3GPP GW of being routed to of PDN GW, PDN GW can issue Serving GW and non-3GPP GW after receiving downlink data subsequently simultaneously.

If indication UE can not use ISR in the agent binding update messages between 3GPP network and non-3GPP network, PDN GW is established to the route of non-3GPP GW, the descending route of PDN GW is switched to non-3GPP GW, and PDN GW only issues non-3GPPGW after receiving downlink data packet subsequently.

Wherein, indication UE can not be when using ISR and indicate PDN GW not initiate the resource releasing processing of UE at source 3GPP network between 3GPP network and the non-3GPP network in acting on behalf of binding update messages, and then PDN GW does not initiate the resource releasing processing of UE at source 3GPP network.

Wherein, indication UE can not use ISR between 3GPP network and non-3GPP network in acting on behalf of binding update messages, and do not indicate PDN GW not initiate UE when the resource releasing processing of source 3GPP network, then PDN GW initiates the resource releasing processing of UE at source 3GPP network.

Step 911, PDN GW return proxy binding acknowledgment messages to non-3GPP GW.

Step 912, non-3GPP access network element or non-3GPP GW send and handoff completion message to 3GPP network side network element, carry whether expression UE uses ISR between 3GPP network and non-3GPP network indication information in this handoff completion message.

After 3GPP network side network element is received handoff completion message, if this indication information indication UE can use ISR between 3GPP network and non-3GPP network, then 3GPP network side network element is not initiated the resource releasing processing flow process of UE in the 3GPP network, otherwise 3GPP network side network element is initiated the resource releasing processing flow process of UE in the 3GPP network.

Consult Figure 10, the embodiment of the invention ten provides a kind of method of realizing ISR in switching process, and this embodiment describes and switches to the non-3GPP network again after UE inserts the 3GPP network, supposes and adopts the CMIP agreement between UE and the PDN GW, switching type switches for optimizing, and this method comprises:

Step 1001-step 1006 is identical with step 901-step 906.

Step 1007, UE send the Binding Update request to PDN GW, carry to show whether UE uses the indication information of ISR and the routing iinformation of non-3GPP GW between 3GPP network and non-3GPP network in this request, also carry indication PDN GW in this request and do not initiate the Indication message of UE in the resource releasing processing of source 3GPP network.The concrete processing mode of indication information is with the processing in the step 514.

Step 1008, PDN GW receive that concrete processing mode behind the binding update messages is with the processing in the step 910.

Step 1009, PDN GW send binding acknowledgement message to UE.

Step 1010 is identical with step 912.

One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, read-only memory for example, disk or CD etc.

Consult Figure 11, the embodiment of the invention 11 provides a kind of network element device, and this network element device can be PDN

GW, this equipment comprises:

Wherein, when objective network is the 3GPP network, the objective network gateway is Serving GW, described information acquisition unit comprises the first indication information acquiring unit, be used for when adopting the GTP agreement between Serving GW and the user's face anchor point network element, receive establishment carrying request of carrying described indication information or the request of establishment PDP Context that described Serving GW sends; Described routing management unit comprises the first via by administrative unit, is used for remaining to the route of source network gateway after receiving described establishment carrying request of carrying indication information or creating the PDP Context request, is created to the route of described Serving GW; Perhaps, described information acquisition unit comprises the second indication information acquiring unit, be used for when adopting the GTP agreement between Serving GW and the user's face anchor point network element, receive modification carrying request of carrying described indication information or the request of modification PDP Context that described Serving GW sends; Described routing management unit comprises the secondary route administrative unit, is used for remaining to the route of source network gateway after receiving modification carrying request or revising the PDP Context request, is created to the route of described Serving GW.

When adopting the PMIP agreement between objective network gateway and the PDN GW, described information acquisition unit comprises the 3rd indication information acquiring unit, be used for when adopting the PMIP agreement between described objective network gateway and the user's face anchor point network element agent binding update messages that carries described indication information that the receiving target network gateway sends; Described route is set up the unit and is comprised Third Road by administrative unit, is used for remaining to the route of source network gateway after receiving the described agent binding update messages that carries indication information, is created to the route of described objective network gateway.

When adopting the PMIP agreement between UE and the PDN GW, described information acquisition unit comprises the 4th indication information acquiring unit, be used for when using the CMIP agreement between user and the user's face anchor point network element, receiving the binding update messages that carries described indication information that the user sends; Described route is set up the unit and is comprised the 4th routing management unit, is used for remaining to the route of source network gateway after receiving the described binding update messages that carries indication information, is created to the route of described objective network gateway.

Consult Figure 12, the embodiment of the invention 12 provides a kind of terminal equipment, comprising:

This equipment can also comprise: ISR ability indicating member, be used to send the capability indication information whether described terminal equipment of expression supports to use between 3GPP network and the non-3GPP network ISR, determine for described network side whether the user uses ISR between 3GPP network and non-3GPP network.

The embodiment of the invention 13 provides a kind of network system, comprising:

When objective network was 3GPP, this system also comprised:

3GPP network mobility managed network element, the expression that is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described objective network gateway.

When objective network was non-3GPP, this system also comprised:

The non-3GPP access network element, the expression that is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described objective network gateway.

When objective network is non-3GPP, described objective network gateway, the expression that also is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network.

The embodiment of the invention 14 provides a kind of network system, comprising:

When objective network was 3GPP, this system also comprised:

3GPP network mobile management network element, the expression that is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described subscriber equipment.

When objective network was non-3GPP, this system also comprised:

The non-3GPP access network element, the expression that is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described subscriber equipment.

When objective network was non-3GPP, this system also comprised:

Non-3GPP GW, the expression that is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described subscriber equipment.

As seen from the above analysis, the embodiment of the invention has following beneficial effect:

The embodiment of the invention is obtained whether the expression user uses ISR between 3GPP network and non-3GPP network indication information, when the user can use ISR between 3GPP network and non-3GPP network, remain to the route of source network gateway, and be established to the route of objective network gateway, source network gateway and objective network gateway all can be received to send to the user's data bag, therefore the user still can receive the packet that network side sends at the 3GPP network at the non-3GPP network, thereby guarantee user's business continuance, when being switched, the user can use ISR mechanism between 3GPP network and non-3GPP network, subsequent user can not trigger the route switching flow when mobile between 3GPP network and non-3GPP network like this, thereby saves UE switching flow between 3GPP network and non-3GPP network.

Terminal equipment receives the expression user can use ISR between 3GPP network and non-3GPP network indication information in the embodiment of the invention, when indication information is expressed as the user and can uses ISR between 3GPP network and non-3GPP network, be retained in the resource information in the source network, and be based upon resource information in the objective network, make UE registration simultaneously in 3GPP and non-3GPP network, subsequent user just can not trigger the mobile management flow process of UE between 3GPP network and non-3GPP network when mobile between 3GPP network and non-3GPP network like this, thereby saves UE switching flow between 3GPP network and non-3GPP network.

More than method, network element device, terminal equipment and the network system of the realizing ISR in switching process that the embodiment of the invention provided is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.

Claims

1, realize the method for saving signaling ISR under the idle pulley in a kind of handoff procedure, it is characterized in that, comprising:

2, method according to claim 1 is characterized in that, objective network is the 3GPP network, and the objective network gateway is service gateway entity Serving GW,

Described obtaining represents whether the user uses the indication information of ISR to be specially between 3GPP network and non-3GPP network: user's face anchor point network element obtains described indication information from 3GPP network mobility managed network element.

3, method according to claim 2 is characterized in that, before user's face anchor point network element obtained described indication information from 3GPP network mobility managed network element, this method also comprised:

Whether the expression that described 3GPP network mobility managed network element sends according to the user supports the information of ISR ability certainly between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network.

4, method according to claim 3 is characterized in that, when adopting GPRS Tunnel Protocol GTP between Serving GW and the user's face anchor point network element, described user's face anchor point network element obtains described indication information from 3GPP network mobility managed network element and is specially:

3GPP network mobility managed network element is in the establishment default bearer request that sends to Serving GW or create in the default PDP Context request and carry described indication information; Described user's face anchor point network element receives establishment carrying request of carrying described indication information or the request of establishment PDP Context that described Serving GW sends;

Perhaps,

3GPP network mobility managed network element carries described indication information in modification carrying request that sends to Serving GW or the request of modification PDP Context; User's face anchor point network element receives modification carrying request of carrying described indication information or the request of modification PDP Context that described ServingGW sends.

5, method according to claim 4 is characterized in that,

When described user's face anchor point network element received the establishment carrying request of carrying described indication information or creates the PDP Context request, the described route that is established to the objective network gateway was specially:

According to the routing iinformation of creating the Serving GW in carrying request or the request of establishment PDP Context, be created to the route of described Serving GW;

When described user's face anchor point network element received the modification carrying request of carrying described indication information or revises the PDP Context request, the described route that is established to the objective network gateway was specially:

According to the routing iinformation of revising the Serving GW in carrying request or the request of modification PDP Context, be created to the route of described Serving GW.

6, method according to claim 3, it is characterized in that, when mobile Internet Protocol PMIP was acted on behalf of in employing between Serving GW and the user's face anchor point network element, described user's face anchor point network element obtained described indication information from 3GPP network mobility managed network element and is specially:

3GPP network mobility managed network element is in the establishment default bearer request that sends to Serving GW or create in the default PDP Context request and carry described indication information; Described user's face anchor point network element receives the agent binding update messages that carries described indication information that described Serving GW sends;

Perhaps,

3GPP network mobility managed network element carries described indication information in the modification carrying request that sends to Serving GW; Described user's face anchor point network element receives the agent binding update messages that carries described indication information that described Serving GW sends.

7, method according to claim 6 is characterized in that,

The described route that is established to the objective network gateway is specially:

Described user's face anchor point network element according to the routing iinformation of the Serving GW in the described agent binding update messages, is created to the route of described Serving GW after receiving the agent binding update messages that carries described indication information.

8, method according to claim 3 is characterized in that, after described 3GPP network mobility managed network element determined whether the user uses ISR between 3GPP network and non-3GPP network, this method also comprised:

Described 3GPP network mobility managed network element carries adhering to of described indication information to the subscriber equipment transmission and accepts message;

When described indication information was expressed as the user uses ISR between 3GPP network and non-3GPP network, described subscriber equipment was retained in the resource information in the non-3GPP network, and is based upon the resource information in the 3GPP network.

9, the method for stating according to claim 1 is characterized in that, objective network is the non-3GPP network, and the objective network gateway is non-3GPP GW,

When using the PMIP agreement between described non-3GPP GW and the described user's face anchor point network element, described obtaining represents whether the user uses the indication information of ISR to be specially between 3GPP network and non-3GPP network: user's face anchor point network element receives the agent binding update messages that carries described indication information that non-3GPP GW sends.

10, method according to claim 9 is characterized in that, receives at user's face anchor point network element before the agent binding update messages that carries described indication information of non-3GPP GW transmission, and this method also comprises:

Whether the expression that the non-3GPP access network element sends according to the user supports the information of ISR ability certainly between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, and send whether the expression user uses ISR between 3GPP network and non-3GPP network indication information to described non-3GPP GW;

Perhaps,

Whether the expression that described non-3GPP GW sends according to the user supports the information of ISR ability certainly between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network.

11, method according to claim 9 is characterized in that,

The agent binding update messages that carries described indication information that described user's face anchor point network element receives non-3GPP GW transmission is specially:

Described non-3GPP GW sends the agent binding update messages that carries described indication information to user's face anchor point network element after the access message that receives user's transmission, described user's face anchor point network element receives the described agent binding update messages that carries indication information.

12, method according to claim 11 is characterized in that,

Described user's face anchor point network element according to the routing iinformation of non-3GPP GW in the described agent binding update messages, is created to the route of described non-3GPP GW after receiving the agent binding update messages that carries described indication information.

13 methods of stating according to claim 1 when using client's mobile Internet Protocol CMIP between user and the user's face anchor point network element, is characterized in that,

Described obtaining represents whether the user uses the indication information of ISR to be specially between 3GPP network and non-3GPP network: user's face anchor point network element receives the binding update messages that carries described indication information that described user sends.

14, method according to claim 13 is characterized in that, receives at user's face anchor point network element before the binding update messages that carries described indication information of user's transmission, and this method also comprises:

Whether the expression that network element sends according to the user in the objective network supports the information of ISR ability certainly between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network, to subscriber equipment send carry the expression user whether between 3GPP network and non-3GPP network use ISR adhering to of indication information accept message.

15, method according to claim 14 is characterized in that, send to subscriber equipment carry adhering to of described indication information accept message after, this method also comprises:

When described indication information was expressed as described user at 3GPP network and non-3GPP network use ISR, described subscriber equipment was retained in the resource information in the source network, and is based upon the resource information in the objective network.

16, method according to claim 14 is characterized in that,

When described objective network was the 3GPP network, network element was a 3GPP network mobility managed network element in the described objective network; When described objective network was the non-3GPP network, network element was non-3GPP access network element or non-3GPP GW in the described objective network.

17, a kind of network element device is characterized in that, comprising:

18, network element device according to claim 17 is characterized in that, objective network is the 3GPP network, and the objective network gateway is Serving GW,

Described information acquisition unit comprises the first indication information acquiring unit, be used for when adopting the GTP agreement between Serving GW and the described network element device, receive establishment carrying request of carrying described indication information or the request of establishment PDP Context that described Serving GW sends;

Described routing management unit comprises the first via by administrative unit, is used for remaining to the route of source network gateway after receiving described establishment carrying request of carrying indication information or creating the PDP Context request, is created to the route of described Serving GW;

Perhaps,

Described information acquisition unit comprises the second indication information acquiring unit, be used for when adopting the GTP agreement between Serving GW and the described network element device, receive modification carrying request of carrying described indication information or the request of modification PDP Context that described Serving GW sends;

Described routing management unit comprises the secondary route administrative unit, is used for remaining to the route of source network gateway after receiving modification carrying request or revising the PDP Context request, is created to the route of described Serving GW.

19, network element device according to claim 17 is characterized in that,

Described information acquisition unit comprises the 3rd indication information acquiring unit, is used for when adopting the PMIP agreement between described objective network gateway and the user's face anchor point network element agent binding update messages that carries described indication information that the receiving target network gateway sends;

Described route is set up the unit and is comprised Third Road by administrative unit, is used for remaining to the route of source network gateway after receiving the described agent binding update messages that carries indication information, is created to the route of described objective network gateway.

20, network element device according to claim 17 is characterized in that,

Described information acquisition unit comprises the 4th indication information acquiring unit, is used for receiving the binding update messages that carries described indication information that the user sends when using the CMIP agreement between user and the user's face anchor point network element;

Described route is set up the unit and is comprised the 4th routing management unit, is used for remaining to the route of source network gateway after receiving the described binding update messages that carries indication information, is created to the route of described objective network gateway.

21, a kind of terminal equipment is characterized in that, comprising:

22, terminal equipment according to claim 21 is characterized in that, described terminal equipment also comprises:

ISR ability indicating member is used to send the capability indication information whether described terminal equipment of expression supports to use between 3GPP network and the non-3GPP network ISR, determines for described network side whether the user uses ISR between 3GPP network and non-3GPP network.

23, a kind of network system is characterized in that, comprising:

24, system according to claim 23 is characterized in that, when objective network was 3GPP, this system also comprised:

25, system according to claim 23 is characterized in that, when objective network was non-3GPP, this system also comprised:

26, system according to claim 23 is characterized in that, when objective network is non-3GPP,

Described objective network gateway, the expression that also is used for sending according to the user is from the information of whether supporting the ISR ability between 3GPP network and non-3GPP network, and/or whether allow the user between 3GPP network and non-3GPP network, to use the subscription data of ISR from the expression operator that home subscriber server obtained, determine whether the user uses ISR between 3GPP network and non-3GPP network.

27, a kind of network system is characterized in that, comprising:

28, system according to claim 27 is characterized in that, when objective network was 3GPP, this system also comprised:

29, system according to claim 27 is characterized in that, when objective network was non-3GPP, this system also comprised:

30, system according to claim 27 is characterized in that, when objective network was non-3GPP, this system also comprised: