CN102006673A - Method, device and system for releasing connection - Google Patents

Method, device and system for releasing connection Download PDF

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Publication number
CN102006673A
CN102006673A CN2009101714065A CN200910171406A CN102006673A CN 102006673 A CN102006673 A CN 102006673A CN 2009101714065 A CN2009101714065 A CN 2009101714065A CN 200910171406 A CN200910171406 A CN 200910171406A CN 102006673 A CN102006673 A CN 102006673A
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China
Prior art keywords
sipto
user
pdn
csg
sipto pdn
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CN2009101714065A
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CN102006673B (en
Inventor
胡伟华
张艳平
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200910171406.5A priority Critical patent/CN102006673B/en
Priority to PCT/CN2010/076397 priority patent/WO2011023125A1/en
Publication of CN102006673A publication Critical patent/CN102006673A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/38—Connection release triggered by timers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a method, a device and a system for releasing connection, relates to the technical field of communication and solves the technical problem of the unreasonable network sources utilization caused by release delay of the established selected IP traffic offload data packet network (SIPTO PDN) connection in the prior art. In the embodiment of the invention, when a moveable management network element of a served user changes, whether to release the SIPTO PDN connection is determined according to the access information of the user on a target, and a message for deleting the SIPTO PDN connection is sent to a user interface gateway if the release of the SIPTO PDN connection is determined. The method, the device and the system for releasing connection are mainly applied in the aspect of network resource optimization.

Description

Discharge the method, the Apparatus and system that connect
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system that discharges connection.
Background technology
Microcellulor sub-district (Femto cell) is a kind of low-power consumption family wireless access service, frequency spectrum by the permission of family type WAP (wireless access point) use authority connects standard wireless terminal, utilizes the DSL of domestic household, cable broadband access method to insert the mobile operator network.Along with the evolution of radio open technology, bandwidth of air-interface increases rapidly, and core net user's face and transfer resource all are faced with the problem of bandwidth resources anxiety.Virtual network operator wishes to segment the family wireless access service, directly at local break-out, promptly local service flows to end and early inserts internet, avoids taking operator's transfer resource and gateway capacity with part low value Business Stream, thereby reduce every bit bandwidth cost, improve profit.
Under the 3G family wireless access service scene as shown in Figure 1, and subscriber equipment (User Equipment, local service stream UE) can directly insert Internet after the access of eating dishes without rice or wine through the 3G Home eNodeB, be called for short Home eNodeB and go out the Internet interface; Perhaps the Business Stream of UE directly inserts Internet behind process 3G Home eNodeB, backhaul network, 3G femto gateway, is called for short femto gateway and goes out the Internet interface.Above-mentioned two kinds of methods can make the Business Stream of UE without the user plane gateway of core net, promptly, Gateway GPRS Support Node among Fig. 1 (Gateway GPRS Supporting Node, GGSN), thereby the transfer resource and the core net user face resource of operator have been saved, and the mode of this accesses network is called selection IP traffic transfer (SIPTO, Selected IP Traffic Offload).
Above-mentioned framework also is suitable for for evolvement network, wherein, Serving GPRS Support Node among Fig. 1 (Serving GPRS Supporting Node, SGSN) (the Mobility Management Entity of the Mobility Management Entity in the corresponding evolvement network, MME), gateway (the Serving GW in the corresponding evolvement network of GGSN, S-GW), or grouped data network gateway (Packet Data Network GW, P-GW) or both combinations, family's evolution base station in the corresponding evolvement network of 3G Home eNodeB (Home eNodeB, HeNB).
In evolvement network, (Packet Data Network PDN) connects the request of foundation to UE, and the PDN that foundation can be used to transmit the Business Stream of SIPTO connects, and is called for short SIPOPDN and connects by send packet data network to MME.
After SIPTO PDN connect to set up, connect can not keep the time when move the change PDN that causes local IP to insert of the MME that makes service because of UE, how to discharge SIPTO PDN and be connected solution not relevant in the present prior art.
Summary of the invention
Embodiments of the invention provide a kind of method, Apparatus and system that discharges connection, and the scheme that provides a kind of SIPTO of release PDN to connect is so that rationally utilize Internet resources.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method that discharges connection comprises:
When the mobile management network element of service-user changes, determine whether to discharge SIPTO PDN connection at the access information of target side according to the user;
If the definite SIPTO of release PDN connects, the message that then sends the described SIPTO PDN connection of deletion is to user plane gateway.
A kind of device that discharges connection comprises:
Determining unit is used for determining whether to discharge SIPTO PDN connection according to the user at the access information of target side;
Performance element is used for when determining unit determines to discharge SIPTO PDN connection, and the message that the described SIPTO PDN of transmission deletion connects is to user plane gateway.
A kind of method that discharges connection comprises:
When the mobile management network element of service-user changes, receive message from the source mobile management network element, comprise in the described message and be used to indicate PDN to connect or a SIPTO indication information element of carrying;
Indication according to the SIPTO indication information element in the described message determines whether to exist the SIPTO PDN corresponding with indication to connect;
Exist corresponding SIPTO PDN to connect if determine the user, then determine whether to discharge described SIPTO PDN connection at the access information of target side according to the user;
Connect if determine to discharge described SIPTO PDN, then carry out the processing that the described SIPTO PDN of deletion connects.
A kind of device that discharges connection comprises:
Receiving element is used to receive the message from the source mobile management network element, comprises in the described message to be used to indicate PDN to connect or a SIPTO indication information element of carrying;
First determining unit is used for determining whether to exist the SIPTO PDN corresponding with indication to connect according to a SIPTO indication information element of described message;
Second determining unit is used for when first determining unit determines to exist corresponding SIPTO PDN to connect, and determines whether to discharge described SIPTO PDN connection according to the user at the access information of target side;
Performance element is used for determining to discharge described SIPTO PDN when second determining unit and connects, and then carries out the processing that the described SIPTO PDN of deletion connects.
A kind of system that discharges connection comprises:
Source is used for when the mobile management network element of service-user changes, and transmission comprises the message of a SIPTO indication information element that is used to indicate PDN to connect or carries to target side;
Target side, be used to receive described message, and determine whether to exist corresponding SIPTO PDN to connect according to the indication of the SIPTO indication information element in the described message, if determine to exist corresponding SIPTO PDN to connect, then determine whether to discharge described SIPTO PDN connection at the access information of target side according to the user; If determine that the described SIPTO PDN of release connects then the processing that described SIPTO PDN connects is deleted in execution.
The scheme that the embodiment of the invention provides has following advantage or beneficial effect: provide when moving the mobile management network element that makes service because of the user and change, how to have discharged the scheme that SIPTO PDN connects.Source mobile management network element or target mobility management network element can determine whether that at the access information of target side needs discharge SIPTO PDN and connect according to the user.When determining that needing to discharge SIPTO PDN connects, deletion SIPTO PDN connects.Like this, can guarantee the continuity of customer service, can avoid network side is UE does not stop to create the situation that SIPTO PDN connects in moving process generation, can take into account the balance of operator's utilization of resources again, when SIPTO PDN connection can not keep, discharge this PDN and connect, be convenient to operator and rationally utilize Internet resources.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the SIPTO schematic diagram that 3G family inserts scene in the background technology;
Fig. 2 is the schematic flow sheet that discharges the method that connects in the embodiment of the invention 1;
Fig. 3 is the schematic flow sheet that discharges the method that connects in the embodiment of the invention 2;
Fig. 4 is the schematic flow sheet that discharges the method that connects in the embodiment of the invention 3;
Fig. 5 is the schematic flow sheet that discharges the method that connects in the embodiment of the invention 4;
Fig. 6 is the schematic flow sheet that discharges the method that connects in the embodiment of the invention 5;
Fig. 7 is the structural representation that discharges the device that connects in the embodiment of the invention 6;
Fig. 8 is the structural representation that discharges the device that connects in the embodiment of the invention 7;
Fig. 9 is the schematic diagram that discharges the system that connects in the embodiment of the invention 8.
Embodiment
Access network element can be among all embodiment of the present invention:
-family access network element or Home eNodeB: UMTS (Universal Mobile Telecommunication System, universal mobile telecommunications system) HNB in the network, HeNB in SAE (System Architecture Evolved, the System Architecture Evolution) network; Perhaps
-home access gateway; HNB GW in MTS (Universal Mobile Telecommunication System, the universal mobile telecommunications system) network, the HeNB GW in SAE (System Architecture Evolved, the System Architecture Evolution) network; Perhaps
Radio network controller in the-UMTS network (RNC, Radio Network Controller);
ENodeB in the-SAE network; Perhaps
User plane gateway can be among all embodiment of the present invention:
-GGSN; Perhaps
-gateway (Serving GW); Perhaps
-grouped data network gateway (PDN GW); Perhaps
The combination of-Serving GW and PDN GW.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.And, below each embodiment be possibility of the present invention, embodiment put in order and the numbering execution sequence preferred of embodiment with it irrelevant.
Embodiment 1
As shown in Figure 2, present embodiment provides a kind of method that discharges connection, and this method is fit to be deployed in when moving the mobile management network element that makes service because of UE and change, and provides on the mobile management network element of service for UE before changing.In addition, claim that in the present embodiment the mobile management network element before this change is the source mobile management network element, changing the back is target mobility management network element for UE provides the mobile management network element of service.
Step 101 when the mobile management network element of service-user changes, determines whether to discharge SIPTO PDN connection according to the user at the access information of target side.
Step 102, if the definite SIPTO of release PDN connects, the message that then sends the described SIPTO PDN connection of deletion is to user plane gateway.
Need to prove that in the present embodiment, mobile management network element can be MME, also can be SGSN.In addition, user plane gateway in the present embodiment can be GGSN, S-GW, perhaps P-GW.
The method that present embodiment provides a kind of SIPTO of release PDN to connect, this method determines whether to need to discharge the technological means that SIPTO PDN connects by adopting by the source mobile management network element, solved in the prior art, after UE moves, in target side, the target mobility management network element of serving for UE directly connects for UE sets up SIPTO PDN, causes the technical problem of network resources waste, and then has obtained the technique effect that can rationally utilize Internet resources.
Embodiment 2
As shown in Figure 3, present embodiment provides a kind of method that discharges connection, and this method is fit to be deployed in when moving the mobile management network element that makes service because of UE and change, and changing the back provides on the mobile management network element of service for UE.In addition, claim that in the present embodiment the mobile management network element before this change is the source mobile management network element, changing the back is target mobility management network element for UE provides the mobile management network element of service.
Step 201 when the mobile management network element of service-user changes, receives the message from source, comprises in the described message to be used to indicate PDN to connect or a SIPTO indication information element of carrying.
Step 202 is according to the SIPTO PDN connection that the indication of the SIPTO indication information element in the described message determines whether to exist and indication is corresponding.
Step 203 if determine to exist corresponding SIPTO PDN to connect, then determines whether to discharge described SIPTO PDN connection according to the user at the access information of target side.
Step 204 connects if determine to discharge described SIPTO PDN, then carries out the processing that the described SIPTO PDN of deletion connects.
The method that present embodiment provides a kind of SIPTO of release PDN to connect, this method determines whether to need to discharge the technological means that SIPTO PDN connects by adopting in target side, solved in the prior art, after UE moves, the mobile management network element of the service of target side directly connects for UE sets up SIPTO PDN, cause the technical problem of network resources waste, and then obtained the technique effect that can rationally utilize Internet resources.
Embodiment 3
As shown in Figure 4, present embodiment provides a kind of method that discharges connection, when this method mainly relies on and because of UE mobile the mobile management network element of service changed, provides the mobile management network element of service before changing for UE.Particularly, claim that in present embodiment and follow-up embodiment the preceding mobile management network element of this changes is the source mobile management network element, changing the back is target mobility management network element for UE provides the mobile management network element of service, correspondingly, changing preceding is the source access network element for UE provides the access network element of service, and changing the back is target access network unit for UE provides the access network element of service.
Step 301, UE sends the tracing section updating request to target access network unit, and target access network unit sends to target mobility management network element with described tracing section updating request after receiving this request.
The concrete scheme of first kind of step 301: UE sends the tracing section updating request to target access network unit, target access network unit is after receiving this request, can also (Closed Subscriber Group, CSG) information and/or target access network unit supports the ability of SIPTO to send to target mobility management network element together with the closed user group of the current access of UE.
Wherein, CSG information comprises in following at least one in the embodiment of the invention: CSG sign ID cell, CSG ID and access module; Wherein access module is the access module of target access network unit, perhaps the access module of Target cell.Access module comprises: open (open), closed (close), mixing (hybrid) pattern.
The concrete scheme of second kind of step 301: with above-mentioned step 301.
Need to prove, in the present embodiment,, then in following each step, all need select corresponding scheme to carry out if in step 301, selected to carry out the concrete scheme of first kind of step 301.That is: if in step 301, selected to carry out the concrete scheme of second kind of step 301, then in step 302, also carry out the concrete scheme of second kind of step 302.
Step 302, target mobility management network element sends context request message to the source mobile management network element.
The concrete scheme of first kind of step 302: target mobility management network element will comprise the user and support the context request message of the ability of SIPTO to send to the source mobile management network element in CSG information and/or the target access network unit that target side inserts according to the information in the described update request that receives.
The concrete scheme of second kind of step 302: with above-mentioned step 302.
Step 303, the source mobile management network element sends context response information to target mobility management network element.
The concrete scheme of first kind of step 303: the source mobile management network element is according to the access information of user in target side, (in the present embodiment promptly according to the relevant subscription data of user CSG, the relevant subscription data source of this user CSG mobile management network element is as can be known) and the context request message of target mobility management network element transmission in the UE that provides in the CSG of target side information, the target access network unit that perhaps provides in the context request message according to the target mobility management network element transmission supports the ability of SIPTO, determine that subscriber equipment SIPTO PDN is connected target side and whether can keeps (especially, when determining that in the CSG of target side information subscriber equipment SIPTO PDN is connected target side whether can keep the time according to the user, also need particularly in conjunction with the user in the CSG of source information, whether CSG information that the source mobile management network element can insert in source and target side according to the user and the relevant subscription data of user CSG decide the PDN of SIPTO to be connected can to keep.Such as: when the user the CSG of target side ID and user when the CSG of source ID is identical, and the relevant subscription data of user CSG allows the PDN of SIPTO to connect to move and could keep the PDN of SIPTO to connect in target side.Wherein, this user is as can be known in the CSG of source information to the source mobile management network element), if UE can't keep SIPTOPDN to connect in target side, then expression needs to discharge this SIPTO PDN connection, and execution in step 304; If UE can keep SIPTO PDN to connect in target side, then the source mobile management network element can send to target mobility management network element with context response information, comprises a SIPTO indication information element in the message, and execution in step 305.
Need to prove, in present embodiment and the subsequent embodiment, the user includes but not limited in following at least one at the access information of target side: the relevant subscription data with user CSG of CSG information that the user inserts in target side, the target access network unit of service-user supports the ability of SIPTO, the IP address of the target mobility management network element of service-user, the address of user plane gateway.Wherein, mobile management network element is as can be known for the relevant subscription data of user CSG, and the relevant subscription data of this user CSG comprises at least: the user allows the CSG ID that inserts, during whether the CSG ID that the user inserts allows to move when whether allowing to use SIPTO PDN and using SIPTO PDN one; Access network element support the ability of SIPTO refer to an access network element can transfer data packets to the ability of PDN network.
Wherein, in present embodiment and the subsequent embodiment, whether a described SIPTO indication information element can indicating target mobile management network element user exist SIPTO PDN to connect (perhaps carrying), or which PDN connection (perhaps which carrying) is to use SIPTO, concrete mode can be the indication of PDN granularity: { APN, SIPTO flag}; Perhaps carry the indication (Bearer ID, SIPTO flag) of granularity, wherein SIPTO flag indicates whether this PDN or carrying are PDN or the carrying that is used for SIPTO.If having indicated PDN is the PDN of SIPTO, then the carrying that PDN is relevant all is the carrying of SIPTO.This indication can adopt the mode of value to indicate: identify the PDN connection that this PDN is SIPTO such as " 0 ", " 1 " this PDN is not that the PDN of SIPTO connects; Also can adopt the mode of whether carrying cell to indicate, such as having carried SIPTOflag, then identifying this PDN is the PDN connection of SIPTO, and not carrying then, expression is not.After target mobility management network element is received the context corresponding message, target mobility management network element is when setting up radio bearer, this carrying of sign indicating target access network element that connects according to the PDN of this SIPTO is used for SIPTO, connects for the PDN of SIPTO, and its corresponding carrying all be that SIPTO carries.
Wherein, the UE that provides in the context request message that the source mobile management network element sends according to target mobility management network element is at the relevant subscription data with user CSG of the CSG of target side information, perhaps the ability of the support SIPTO of target access network unit determine the SIPTO PDN of UE be connected target side whether can keep specifically can be:
UE does not allow the CSG ID in the CSG information of target side to use SIPTO PDN to connect at the relevant CSG subscription data of user; Can not keep
UE moves at the SIPTO PDN that the relevant CSG subscription data of user does not allow the CSG ID in the CSG information of target side to use; Can not keep
The Target cell in the CSG information of target side or the access module of access network element are closed modes, and UE is not the contracted user of current C SG, does not allow to insert Target cell; Can not keep
Target cell or access network element in the CSG information of target side are mixed modes, and UE is not the contracted user of current C SG; Can keep
Target cell or access network element are open modes; Can keep
UE supports the ability of SIPTO not support SIPTO in target side target access network unit; Can not keep
UE is at the ability support SIPTO of the support SIPTO of target side target access network unit, and the CSG ID of access allows to use SIPTO PDN to connect, and is optional, also allows moving of SIPTO PDN connection; Can keep.
The concrete scheme of second kind of step 303: the IP address of the target mobility management network element that the source mobile management network element carries in context request message according to target mobility management network element (this IP address can be received by the source mobile management network element together along with the request message that target mobility management network element sends), optionally, can also (network topology can be configured in mobile management network element by operator according to network topology, it specifically can be the relation in IP address and geographical position, and whether the network local access network element information such as can reach) determine whether can keep SIPTO PDN to connect between the S-GW of target mobility management network element and service SIPTO PDN and S-GW and the P-GW, if determine to keep SIPTO PDN to connect, expression needs to discharge this SIPTO PDN and connects, and then execution in step 304; If determine to keep SIPTO PDN to connect, then the source mobile management network element can send to target mobility management network element with the context response information that comprises a SIPTO indication information element, and execution in step 305.
Step 304, the source mobile management network element sends and comprises deletion SIPTO PDN connection request message to S-GW, and receives the response message that S-GW returns, and is corresponding, the message of asking that S-GW sends deletion SIPTOPDN connection accordingly arrives P-GW, and receives the response message that P-GW returns.
After S-GW receives the response message that P-GW returns, promptly represented and finished the flow process that the deletion user connects at the SIPTO of target side PDN.
Step 305, target mobility management network element sends route district/tracing section updating to subscriber equipment and accepts message.
Wherein, concrete scheme first kind of step 303, perhaps after the concrete scheme of second kind of step 303, can also carry out target mobility management network element and send context acknowledgement message to the source mobile management network element, target mobility management network element is upgraded and is carried on the target side Resources allocation, if the PDN of SIPTO can keep, target mobility management network element is the carrying of SIPTO or connects Resources allocation.This process is not only applicable to the constant scene of gateway, is equally applicable to the scene that gateway changes.When gateway changed, target mobility management network element sends created conversation request message to S-GW, and S-GW sends and upgrades holder's request message to P-GW.P-GW sends to S-GW and upgrades bearing response message, and S-GW sends to target mobility management network element and creates conversational response message.If target mobility management network element does not have user-dependent subscription data, target mobility management network element and home subscriber server (Home Subscriber Server, HSS) or attaching position register (Home Location Register, HLR) interactive refreshing positional information and obtain user contracting data.
The method that release that the embodiment of the invention provides connects has following advantage or beneficial effect: provide when moving the mobile management network element that makes service because of the user and change, how to have discharged the scheme of SIPTO PDN connection.The source mobile management network element according to the user at the relevant subscription data of the CSG of target side information with user CSG, perhaps at least one in the ability of the support SIPTO of target access network unit determines that can SIPTO keep in target side, when definite SIPTO PDN connection can keep, network side is that UE sets up SIPTO PDN connection in target side, when determining to keep SIPTO PDN to connect, the source mobile management network element sends the message that deletion SIPTOPDN connects.Like this, can guarantee the continuity of customer service, can avoid network side is UE does not stop to create the situation that SIPTO PDN connects in moving process generation, can take into account the balance of operator's utilization of resources again, when SIPTO PDN connection can not keep, discharge this PDN and connect, be convenient to operator and rationally utilize Internet resources.
Embodiment 4
The method that the release that provides among the embodiment 3 connects is to carry out under the UE by user side initiates the scene of Routing Area Update or tracing section updating flow process, as required, the method for the release of embodiment of the invention connection can also be carried out under the scene of the switching flow of being initiated by network side.Present embodiment provides under the scene of the switching flow of being initiated by network side, discharges the method that connects and comprises:
As shown in Figure 5, when this method mainly relies on and moves the mobile management network element that makes service and change because of UE, provide the mobile management network element of service before changing for UE.
Step 401, the source access network element sends handoff request message to the source mobile management network element.
The concrete scheme of first kind of step 401: the source access network element sends handoff request message to the source mobile management network element, can comprise tracking area identification (the Tracking Area Identity that the user inserts in target side in this handoff request message, TAI) or Routing Area Identifier (Routing Area Identity, RAI) or Target cell ID.
The concrete scheme of second kind of step 401: the source access network element sends handoff request message to the source mobile management network element, comprises the CSG information of target side and/or the SIPTO ability of target access network unit in this handoff request message.
Need to prove, in the present embodiment,, then in following each step, all need select corresponding scheme to carry out if in step 401, selected to carry out the concrete scheme of first kind of step 401.That is: if in step 401, selected to carry out the concrete scheme of second kind of step 401, then in step 402, also carry out the concrete scheme of second kind of step 402.
Step 402, the source mobile management network element sends forward direction handoff request message to target mobility management network element.Comprise user context information in the message.
The concrete scheme of first kind of step 402: the source mobile management network element after receiving described handoff request message, the IP address that obtains target mobility management network element according to the TAI in this message or RAI or Target cell ID.The source mobile management network element is according to the IP address that obtains, optionally, can also determine whether can carry out Signalling exchange between the user plane gateway of target mobility management network element and service SIPTO PDN according to network topology, so that keep SIPTO PDN to connect, if determine the unavailable Signalling exchange that carries out, then can't keep SIPTO PDN to connect, representative needs to discharge this LIPN PDN and connects, and then execution in step 403; If determine to carry out Signalling exchange, that is, can keep SIPTO PDN to connect, then the source mobile management network element can send to target mobility management network element with the context response information that comprises a SIPTO indication information element, and execution in step 404.
Need to prove that if S-GW changes, target mobility management network element will send to S-GW and create bearing request message.S-GW creates carrying after receiving and creating bearer messages.
The concrete scheme of second kind of step 402: the source mobile management network element is after receiving described handoff request message, provide the user access information in the handoff request message according to the transmission of source access network element in target side, promptly the UE that provides in the handoff request message according to relevant subscription data of user CSG and target mobility management network element transmission is in the CSG of target side information, the target access network unit that perhaps provides in the handoff request message according to the target mobility management network element transmission supports the ability of SIPTO, determine that subscriber equipment SIPTO PDN is connected target side and whether can keeps (especially, when determining that in the CSG of target side information subscriber equipment SIPTOPDN is connected target side whether can keep the time according to the user, also need particularly in conjunction with the user in the CSG of source information, have only when the user the CSG of target side information and user when the CSG of source information is identical, just can make the result after determining effective, wherein this user is as can be known in the CSG of source information to the source mobile management network element), if UE can't keep SIPTO PDN to connect in target side, then expression needs to discharge this SIPTO PDN connection, and then execution in step 403; If UE can keep SIPTO PDN to connect in target side, then the source mobile management network element can context response information send to target mobility management network element, can comprise a SIPTO indication information element in the message, and execution in step 404.
Step 403, the source mobile management network element sends and comprises deletion SIPTO PDN connection request message to S-GW, and receives the response message that S-GW returns, and is corresponding, the message of asking that S-GW sends deletion SIPTOPDN connection accordingly arrives P-GW, and receives the response message that P-GW returns.
After S-GW receives the response message that P-GW returns, promptly represented and finished the flow process that the deletion user connects at the SIPTO of target side PDN.
Step 404, target mobility management network element send the forward direction switching response message to the source mobile management network element after receiving this forward direction handoff request message.After target mobility management network element was returned switching response message, network side began to carry out switching flow, and after switching was finished, target mobility management network element sent the forward direction handoff completion message to the source mobile management network element.The source mobile management network element sends the forward direction switching to target mobility management network element and finishes acknowledge message after receiving this forward direction handoff completion message.And target mobility management network element sends bearer update message to S-GW, and is corresponding, and S-GW sends the bearer update response message to target mobility management network element after receiving bearer update message.If the source mobile management network element is determined and can not target side can not be kept the PDN of SIPTO to connect in the step 402, do not comprise that in message the PDN of SIPTO connects.
The scheme of the embodiment of the invention provides when moving the mobile management network element that makes service because of the user and change, and utilizes switching flow, how to discharge the scheme that SIPTO PDN connects.Can the source mobile management network element keep in target side according to definite SIPTO such as ability of the SIPTO of the relevant subscription data of user CSG, access network element, when definite SIPTO PDN connection can keep, network side is that UE sets up SIPTO PDN connection in target side, when determining to keep SIPTO PDN to connect, the source mobile management network element sends the message that deletion SIPTOPDN connects.Like this, can guarantee the continuity of customer service, can avoid network side is UE does not stop to create the situation that SIPTO PDN connects in moving process generation, can take into account the balance of operator's utilization of resources again, when SIPTO PDN connection can not keep, discharge this PDN and connect, be convenient to operator and rationally utilize Internet resources.
Embodiment 5
As shown in Figure 6, the method that present embodiment provides concrete a kind of preferable release to connect, when this method mainly relied on and moves the mobile management network element that makes service and change because of UE, changing the back provided the mobile management network element of service, i.e. target mobility management network element for UE.This method comprises:
Step 501, the source access network element sends handoff request message to the source mobile management network element.
Step 502, the source mobile management network element sends forward direction handoff request message to target mobility management network element.Comprise user context information in the message.
The concrete scheme of first kind of step 502: the source mobile management network element sends forward direction handoff request message to target mobility management network element, can comprise a SIPTO indication information element in the message, the embodiment of a SIPTO indication information element please refer to step 303.Comprise user context information in the message, receive user's context after, target mobility management network element is when setting up corresponding radio bearer, this connection is used for SIPTO according to the PDN of this SIPTO sign indicating target access network element.For this packet that connects the SIPTO in each carrying, secure tunnel can not mail to it in target access network unit.The indication of whether supporting SIPTO can be carried by target access network unit in the load creating response message.
Need to prove that if S-GW changes, target mobility management network element will send to S-GW and create bearing request message.S-GW creates carrying after receiving and creating bearer messages.
The concrete scheme of second kind of step 502: the source mobile management network element sends forward direction handoff request message to target mobility management network element.Can comprise in the message that the user is at the CSG of a source information and a SIPTO indication information element.The user comprises in following at least one in the CSG of source information: the user is at the access module of the CSG of source ID, CSG cell, access network element.
Need to prove, in the present embodiment,, then in following each step, all need select corresponding scheme to carry out if in step 502, selected to carry out the concrete scheme of first kind of step 502.That is: if in step 502, selected to carry out the concrete scheme of second kind of step 502, then in step 503, also carry out the concrete scheme of second kind of step 503.
Step 503, target mobility management network element send the forward direction switching response message to the source mobile management network element after receiving this handoff request message.
The concrete scheme of first kind of step 503A: target mobility management network element is after receiving this handoff request message, determining according to the indication of a SIPTO indication information element whether the user connects with corresponding SIPTO PDN is connected, if the user exists described SIPTO PDN to connect, target mobility management network element connects corresponding P-GW address according to PDN in the user context information, optionally, also can determine whether can carry out Signalling exchange between the user plane gateway of target mobility management network element and service SIPTO PDN, so that keep SIPTO PDN to connect in conjunction with network topology; Perhaps target mobility management network element can attempt determining to the user plane gateway transmission bearer update message of SIPTO PDN; If user's service network element changes, target mobility management network element can send to the gateway of new selection and create conversation message, gateway by new selection sends bearer update message to the user plane gateway of SIPTO PDN, gateway receives that sending response message to target mobility management network element behind the response message that the user plane gateway of SIPTO PDN sends creates the session success, if gateway can not receive the response message that the user plane gateway of SIPTO PDN sends, then return failed message to target mobility management network element, correspondingly, if target mobility management network element is received the response message of user plane gateway or is received that indication that gateway sends creates the message of session success then represent and determine to carry out Signalling exchange, otherwise can not carry out Signalling exchange.Target mobility management network element generates the 2nd SIPTO indication information element according to the result who determines and is included in and sends to the source mobile management network element in the forward direction switching response message, wherein, can the 2nd SIPTO indication information element can be used to indicate source mobile management network element SIPTOPDN to be connected target side and keep, also can be used to indicate the source mobile management network element whether to delete SIPTOPDN and connect, also can be used to indicate whether to keep SIPTO PDN to be connected etc. between the user plane gateway of source mobile management network element target mobility management network element and SIPTO.The 2nd SIPTO indication information element can be indicated the source mobile management network element by concrete value, is that " 0 " then identifies and need connect by deletion SIPTO PDN such as the indicator value, and " 1 " sign does not need to delete SIPTO PDN and connects; Perhaps indicate the source mobile management network element by whether carrying this cell, such as deleting SIPTO PDN and connect by carrying this source identity, not carrying this source identity does not need to delete SIPTO PDN and connects; The source mobile management network element is after receiving this forward direction switching response message, according to the wherein indication execution of the 2nd SIPTO indication information element.For example: can not keep if the 2nd SIPTO indication information element indication SIPTO PDN is connected target side, perhaps can't keep SIPTO PDN to be connected between the P-GW of target mobility management network element and SIPTO, perhaps indication deletion SIPTO PDN connects, and then source mobile management network element deletion SIPTO PDN connects.The detailed process that source mobile management network element deletion SIPTO PDN connects can be with reference to the step 304 among the embodiment 3.
Alternatively, the concrete scheme of this first kind of step 503A can also be the concrete scheme of first kind of step 503B, the concrete scheme of this first kind of step 503B: with above-mentioned step 503.At this moment, the concrete scheme of this first kind of step 503A also can be carried out in following step 504.
The concrete scheme of second kind of step 503: with above-mentioned step 503.
Step 504, after target mobility management network element was returned switching response message, network side began to carry out switching flow, and after switching was finished, target mobility management network element sent the forward direction handoff completion message to the source mobile management network element.
The concrete scheme of first kind of step 504A: with above-mentioned step 504.
The concrete scheme of first kind of step 504B: with the concrete scheme of above-mentioned first kind of step 503A.
The concrete scheme of second kind of step 504: with above-mentioned step 504.
Step 505, source mobile management network element send the forward direction switching to target mobility management network element and finish acknowledge message after receiving this forward direction handoff completion message.And target mobility management network element sends bearer update message to S-GW, and is corresponding, and S-GW sends the bearer update response message to target mobility management network element after receiving bearer update message.
The concrete scheme of first kind of step 505 is all identical with above-mentioned steps 505 herein with the concrete scheme of second kind of step 505.
Step 506, target mobility management network element receive this bearer update response message.Because switching flow finishes, promptly represent UE to insert target side, this moment, UE initiated Routing Area Update flow process or tracing section updating request message.
The concrete scheme of first kind of step 506: with above-mentioned step 506.
The concrete scheme of second kind of step 506: after target mobility management network element received this bearer update response message, UIE initiated Routing Area Update flow process or tracing section updating request message.After target mobility management network element receives the update inquiry information of UE, determining according to the indication of the SIPTO indication information element in the concrete scheme of above-mentioned second kind of step 502 whether the user connects with corresponding SIPTO PDN is connected, if the user exists described SIPTO PDN to connect, promptly, the SIPTOPDN that indicates in user and the described SIPTO indication information element is connected and is connected, then obtain the relevant subscription data of user CSG from HSS, and according to relevant subscription data of this user CSG that obtains and the CSG information that originally is stored on the target mobility management network element, perhaps determine and to keep SIPTO PDN to connect (especially in target side according to the SIPTO ability that originally is stored in the access network element on the target mobility management network element, when can determine in the CSG of target side information according to the user when target side keeps SIPTO PDN to connect, also need particularly in the concrete scheme in conjunction with above-mentioned second kind of step 502, the user that target mobility management network element obtains is in the CSG of source information, and whether CSG information that target mobility management network element can insert in source and target side according to the user and the relevant subscription data of user CSG decide the PDN of SIPTO to be connected can to keep.Such as: when the user the CSG of target side ID and user when the CSG of source ID is identical, and the PDN of the relevant signatory SIPTO of permission of user CSG connects and moves and could keep the PDN of SIPTO to connect in target side.Wherein, this user is as can be known in the CSG of source information to the source mobile management network element), if can not keep this SIPTO PDN to connect, representative needs to discharge this SIPTO PDN and connects, then target mobility management network element sends deletion SIPTO PDN connection request message to S-GW and receive the response message that S-GW returns, accordingly, the message of asking that S-GW sends deletion SIPTO PDN connection accordingly arrives P-GW, and receives the response message that P-GW returns.
Wherein, target mobility management network element is according to the relevant subscription data of this user CSG that obtains, and is stored in CSG information on the target mobility management network element originally and/or the SIPTO ability of target access network unit determines that can the concrete grammar that keep SIPTO PDN to connect in target side be:
UE does not allow the CSG ID in the CSG information of target side to use SIPTO PDN to connect at the relevant CSG subscription data of user; Can not keep
UE moves at the SIPTO PDN that the relevant CSG subscription data of user does not allow the CSG ID in the CSG information of target side to use; Can not keep
The Target cell in the CSG information of target side or the access module of access network element are closed modes, and UE is not the contracted user of current C SG, does not allow to insert Target cell; Can not keep
Target cell or access network element in the CSG information of target side are mixed modes, and UE is not the contracted user of current C SG; Can keep
Target cell or access network element are open modes; Can keep
UE supports the ability of SIPTO not support SIPTO in target side target access network unit; Can not keep
UE is at the ability support SIPTO of the support SIPTO of target side target access network unit, and the CSG ID of access allows to use SIPTO PDN to connect, and is optional, also allows moving of SIPTO PDN connection; Can keep.
Optionally, in step 502, after the source mobile management network element is resolved and is obtained target mobility management network element IP address, can judge whether the user plane gateway of determining target mobility management network element and SIPTO PDN can reach in conjunction with network topology, if can reach, then the PDN of SIPTO is connected to be included in and send to target mobility management network element in the user's context, and in message the indication target mobility management network element which connect for SIPTO PDN or carrying, specifically the mode of indicating can reference example 3 SIPTO flag; If unreachable, do not comprise in user's context that then the PDN of SIPTO connects;
In step 506, after target mobility management network element is obtained user contracting data, determine that the user can not keep SIPTO PDN to connect in target side, deletion SIPTO PDN connects, and embodiment can refer step 406.
Of particular note, if itself has preserved user contracting data target mobility management network element, can not rely on Routing Area Update or tracing section updating flow process that UE initiates, directly according to the user contracting data of storage, thereby and the SIPTO ability of CSG information and/or target access network unit determine whether the user can keep SIPTO PDN in target side and connect and initiate the deletion flow process that SIPTO PDN connects.
In addition, the method that release that present embodiment provides connects is to carry out under the scene of the switching flow of being initiated by network side, this scheme is equally applicable to be initiated to carry out under the scene of Routing Area Update or tracing section updating flow process by the UE of user side, carrying into execution a plan under this scene, can be with reference to the description among present embodiment and the embodiment 3, as required with the switching message in the switching flow in the present embodiment, the context corresponding message that correspondence replaces in the new technological process more gets final product
The source mobile management network element will include a SIPTO indication information element in context response information message sends to target mobility management network element, and the behavior of target mobility management network element can refer step 503 or step 506.
The concrete method step of carrying out is that one of ordinary skill in the art can be known easily according to the description among present embodiment and the embodiment 3, here redundant narration not the just.
The method that release that the embodiment of the invention provides connects has following advantage or beneficial effect: provide when moving the mobile management network element that makes service because of the user and change, how to have discharged the scheme of SIPTO PDN connection.After target mobility management network element determines to exist corresponding SIPTO PDN to connect according to the sign of source mobile management network element, according to CGS information, the user CSG subscription data of being correlated with, one or more combination such as the ability of the SIPTO of access network element determines that can SIPTO keep in target side, when determining to keep SIPTO PDN to connect, can send the indication that deletion SIPTO PDN connects to the source mobile management network element, undertaken connecting by the source mobile management network element, perhaps directly initiate the flow process that deletion SIPTO PDN connects by target mobility management network element according to this indication deletion SIPTO PDN.Like this, can guarantee the continuity of customer service, can avoid network side is UE does not stop to create the situation that SIPTO PDN connects in moving process generation, can take into account the balance of operator's utilization of resources again, when SIPTO PDN connection can not keep, discharge this PDN and connect, be convenient to operator and rationally utilize Internet resources.
In addition, and local break-out (Local IP Access, LIPA), promptly UE directly visits the resource of home network device or company's network by access network element, and the framework of employing is identical with SIPTO in the embodiment of the invention.Therefore, there is embodiment of the invention problem to be solved in the UE that has LIPA PDN connection equally when mobile, and the method for treatment S IPTO equally also is applicable to local break-out (Local IP Access, processing LIPA) in the above embodiment of the present invention.Here do not giving unnecessary details!
Embodiment 6
Present embodiment provides a kind of device 500 that discharges connection, and as described in Figure 7, this device is suitable as the source mobile management network element, comprising: determining unit 51, performance element 52.
Determining unit 51 is used for determining whether to discharge SIPTO PDN connection according to the user at the access information of target side; Performance element 52 is used for when determining unit 51 determines to discharge SIPTO PDN connection, and the message that the described SIPTO PDN of transmission deletion connects is to user plane gateway.
Further, this device 500 also can comprise as lower module: information acquisition unit 54, IP acquiring unit 55, transmitting element 53.
Information acquisition unit 54 is used to obtain the CSG information of user's access and/or the ability that target access network unit supports SIPTO; IP acquiring unit 55, the IP address that is used to obtain target mobility management network element; Transmitting element 53 is used for sending a message to target mobility management network element when determining unit 51 determines to keep SIPTO to connect, and comprises in the described message and is used to indicate PDN to connect or a SIPTO indication information element of carrying.
Wherein, the CSG information that the user that determining unit 51 is obtained according to the relevant subscription data of user CSG and described information acquisition unit 54 inserts, or support the ability of SIPTO to determine whether to discharge described SIPTO according to target access network unit to connect; Perhaps, the IP address of the target mobility management network element obtained according to described IP acquiring unit 55 of determining unit 51 determines whether to discharge described SIPTO PDN and connects.
In the present embodiment, the CSG information that the user inserts comprises CSG ID and access module at least, then determining unit 51 be used for according to the CSG information that the user that the relevant subscription data of user CSG and described information acquisition unit 54 are obtained inserts determine whether to discharge SIPTO PDN is connected can be by at least one following realization:
If the relevant subscription data of described user CSG does not allow described CSG ID to use SIPTO PDN to connect, then determining unit 51 determines that the described SIPTO PDN of release connects, otherwise determining unit 51 determines to keep described SIPTO PDN to connect;
Do not move if the relevant subscription data of described user CSG does not allow the SIPTO PDN of described CSG ID use to connect, then determining unit 51 determines to discharge described SIPTO PDN connection, otherwise determining unit 51 determines to keep described SIPTO PDN to connect;
If described access module is a closed mode, and the subscriber equipment of service is not the contracted user of the relevant subscription data of described user CSG, then determining unit 51 determines to discharge described SIPTO PDN connection, otherwise determining unit 51 determines to keep described SIPTO PDN to connect.
Correspondingly, determining unit 51 is used for supporting the ability of SIPTO to determine whether to discharge described SIPTO according to target access network unit and connects and can realize in the following way:
If the ability of the described target access network support SIPTO of unit is not supported SIPTO, then the described SIPTO PDN of determining unit 51 definite releases connects, otherwise determining unit 51 is determined the described SIPTO PDN connection of maintenance.
Correspondingly, the determining unit 51 IP address that is used for the target mobility management network element obtained according to described IP acquiring unit 55 determines whether to discharge described SIPTO PDN and connects and can realize in the following way:
If the IP address of described target mobility management network element is not present in the network topology, then determining unit 51 determines to discharge described SIPTO PDN connection; Otherwise determining unit 51 determines to keep described SIPTO PDN to connect.
Present embodiment provides a kind of device that discharges connection, this device has can determine whether that needing to discharge SIPTO PDN connects, and after determining that needing to discharge SIPTO PDN connects, send the function of the message of deletion SIPTO PDN connection, solved in the prior art, after UE moved, the mobile management network element of the service of target side directly connected for UE sets up SIPTO PDN, cause the technical problem of network resources waste, and then obtained the technique effect that can rationally utilize Internet resources.
Embodiment 7
Present embodiment provides a kind of device 600 that discharges connection, and as described in Figure 8, this device is suitable as target mobility management network element, comprising: receiving element 61, the first determining units 62, the second determining units 63, performance element 64.
Receiving element 61 is used to receive the message from the source mobile management network element, comprises in the described message to be used to indicate PDN to connect or a SIPTO indication information element of carrying; First determining unit 62 is used for determining whether to exist corresponding SIPTO PDN to connect according to a SIPTO indication information element of described message; Second determining unit 63 is used for when first determining unit 62 determines to exist corresponding SIPTO PDN to connect, and determines whether to discharge described SIPTO PDN connection according to the user at the access information of target side; Performance element 64 is used for determining to discharge described SIPTO PDN when second determining unit 63 and connects, and then carries out the processing that the described SIPTOPDN of deletion connects.
Wherein, described user comprises in following at least one at the access information of target side: the relevant subscription data with user CSG of CSG information that the user inserts, the ability of the support SIPTO of target access network unit, the address of user plane gateway.
Particularly, second determining unit 63 comprises in the present embodiment:
Address determination module 631 is used for determining whether to discharge described SIPTOPDN connection according to the address of user plane gateway; And/or information determination module 632, be used for CSG information according to the relevant subscription data of described user CSG and user's access, perhaps support the ability of SIPTO according to target access network unit, determine whether to discharge described SIPTO PDN and connect.
In the present embodiment, performance element 64 comprises:
Executive Module 641 is used for when address determination module 631 determines that the described SIPTO PDN of release connects, and the message that the described SIPTO PDN of transmission deletion connects arrives described source.And/or as lower module
Sending module 642 is used for when information determination module 632 determines that the described SIPTO PDN of release connects, and the message that the described SIPTO PDN of transmission deletion connects is to user plane gateway.
Wherein, address determination module 631 can be determined in the following way:
Open up bowl spares if described user plane gateway address is present in described network, then address determination module 631 determines to discharge described SIPTO PDN connection.
The CSG information that user in the present embodiment inserts comprises CSG ID and access module at least: therefore, when information determination module 632 was used for determining whether to discharge described SIPTO PDN and being connected according to the CSG information that the relevant subscription data of described user CSG and user insert, at least one item in can be was in the following way determined:
If the relevant subscription data of described user CSG does not allow described CSG ID to use SIPTO PDN to connect, then information determination module 632 determines that the described SIPTO PDN of release connects;
Do not move if the relevant subscription data of described user CSG does not allow the SIPTO PDN of described CSG ID use to connect, then information determination module 632 determines to discharge described SIPTO PDN connection;
If described access module is a closed mode, and the subscriber equipment of service is not the contracted user of the relevant subscription data of described user CSG, and then information determination module 632 is determined to discharge described SIPTO PDN and connected.
Correspondingly, when information determination module 632 is used for supporting according to target access network unit the ability of SIPTO, determines whether to discharge described SIPTO PDN and connect and can realize in the following way:
If the ability of the described target access network support SIPTO of unit is not supported SIPTO, then information determination module 632 determines to discharge described SIPTO PDN connection.
Present embodiment provides a kind of device that discharges connection, this device is by being determined whether to need to discharge the technological means that SIPTO PDN connects by target mobility management network element, solved in the prior art, after UE moves, target mobility management network element directly connects for UE sets up SIPTO PDN, cause the technical problem of network resources waste, and then obtained the technique effect that can rationally utilize Internet resources.
Embodiment 8
A kind of system that discharges connection of present embodiment, as described in Figure 9, this system comprises: source 81, target side 82.
Wherein, source 81 is used for when the mobile management network element of service-user changes, and transmission comprises the message of a SIPTO indication information element that is used to indicate PDN to connect or carries to target side; Target side 82, be used to receive described message, and determine whether to exist corresponding SIPTO PDN to connect according to the indication of the SIPTO indication information element in the described message, if determine to exist corresponding SIPTO PDN to connect, then determine whether to discharge described SIPTO PDN connection at the access information of target side according to the user; If determine that the described SIPTO PDN of release connects then the processing that described SIPTO PDN connects is deleted in execution.
This enforcement provides when moving the mobile management network element that makes service because of the user and change, and how to discharge the scheme that SIPTO PDN connects.Target side can determine according to PDN relevant information network side whether needs discharge SIPTO PDN connection.When determining that needing to discharge SIPTO PDN connects, deletion SIPTO PDN connects.Like this, can guarantee the continuity of customer service, can avoid network side is UE does not stop to create the situation that SIPTO PDN connects in moving process generation, can take into account the balance of operator's utilization of resources again, is convenient to operator and rationally utilizes Internet resources.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc. comprise that some instructions are with so that an equipment (can be notebook computer etc.) is carried out the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.

Claims (23)

1. a method that discharges connection is characterized in that, comprising:
When the mobile management network element of service-user changes, determine whether to discharge the selection IP traffic transfer SIPTO PDN of Packet Data Network connection at the access information of target side according to the user;
If the definite SIPTO of release PDN connects, the message that then sends the described SIPTO PDN connection of deletion is to user plane gateway.
2. method according to claim 1 is characterized in that, described user comprises in following at least one at the access information of target side:
The relevant subscription data of closed user group CSG information that the user inserts with user CSG,
Target access network unit supports the ability of SIPTO,
The IP address of target mobility management network element.
3. method according to claim 1 and 2 is characterized in that, this method also comprises:
Obtain the CSG information of user's access and/or the ability that target access network unit supports SIPTO;
Describedly determine whether to discharge SIPTO PDN according to the user at the access information of target side and be connected to:
The relevant subscription data with user CSG of CSG information that inserts according to the user determines whether to discharge SIPTOPDN and is connected; Perhaps
Supporting the ability of SIPTO to determine whether to discharge SIPTO PDN according to target access network unit connects.
4. method according to claim 3 is characterized in that, the CSG information that described user inserts comprises at least: CSG ID and access module;
The described relevant subscription data with user CSG of CSG information that inserts according to the user determines whether to discharge SIPTO PDN and is connected at least one item that comprises in following:
If the relevant subscription data of described user CSG does not allow described CSG ID to use SIPTO PDN to connect, then determine to discharge described SIPTO PDN and connect, otherwise determine to keep described SIPTO PDN to connect;
If the SIPTO PDN that the relevant subscription data of described user CSG does not allow described CSG ID to use connects move, then determine to discharge described SIPTO PDN and connect, otherwise determine to keep described SIPTO PDN to connect;
If described access module is a closed mode, and the subscriber equipment of service is not the contracted user of the relevant subscription data of described user CSG, then determines to discharge described SIPTO PDN and connects, otherwise determine to keep described SIPTO PDN to connect.
5. method according to claim 3 is characterized in that, described ability according to the support SIPTO of target access network unit determines whether to discharge SIPTO PDN connection and comprises:
If the ability of the described target access network support SIPTO of unit is not supported SIPTO, then determine to discharge described SIPTO PDN and connect, otherwise determine that the described SIPTO PDN of maintenance connects.
6. method according to claim 3 is characterized in that, CSG information that the described user of obtaining inserts and/or target access network unit support the ability of SIPTO to comprise:
Comprise the CSG information of described user's access and/or the message that target access network unit supports the ability of SIPTO from the target mobility management network element reception; Perhaps
Comprise the CSG information of described user's access and/or the message that target access network unit supports the ability of SIPTO from the reception of source access network element.
7. method according to claim 1 and 2 is characterized in that, this method also comprises:
Obtain the IP address of target mobility management network element;
Describedly determine whether to discharge SIPTO PDN according to the user at the access information of target side and connect and comprise: determine whether to discharge SIPTO PDN according to the IP address of the described target mobility management network element of obtaining and connect.
8. method according to claim 7 is characterized in that, the IP address of the described target mobility management network element that described basis is obtained determines whether to discharge SIPTO PDN connection and comprises:
If the IP address of described target mobility management network element is not present in the network topology, determine that then discharging described SIPTO PDN connects; Otherwise determine to keep described SIPTO PDN to connect.
9. method according to claim 1 is characterized in that, this method also comprises:
If determine to keep SIPTO PDN to connect; Then send a message to target mobility management network element, comprise in the described message and be used to indicate PDN to connect or a SIPTO indication information element of carrying, so that target mobility management network element is informed in that the PDN of corresponding described SIPTO indication information element indication in the radio bearer of foundation connects or carrying is used for SIPTO PDN and connects.
10. a device that discharges connection is characterized in that, comprising:
Determining unit is used for determining whether to discharge SIPTO PDN connection according to the user at the access information of target side;
Performance element is used for when determining unit determines to discharge SIPTO PDN connection, and the message that the described SIPTO PDN of transmission deletion connects is to user plane gateway.
11. device according to claim 10 is characterized in that, this device also comprises:
Information acquisition unit is used to obtain the CSG information of user's access and/or the ability that target access network unit supports SIPTO;
The CSG information that the user that described determining unit is obtained according to the relevant subscription data of user CSG and described information acquisition unit inserts; Perhaps the target access network unit that obtains according to described information acquisition unit supports the ability of SIPTO to determine whether to discharge described SIPTO connection.
12. device according to claim 10 is characterized in that, this device also comprises:
The IP acquiring unit, the IP address that is used to obtain target mobility management network element;
Described determining unit determines whether to discharge described SIPTO PDN connection according to the IP address of the target mobility management network element that described IP acquiring unit obtains.
13., it is characterized in that this device also comprises according to any described device of claim in the claim 10 to 12:
Transmitting element is used for sending a message to target mobility management network element when determining unit determines to keep SIPTO to connect, and comprises in the described message and is used to indicate PDN to connect or a SIPTO indication information element of carrying.
14. a method that discharges connection is characterized in that, comprising:
When the mobile management network element of service-user changes, receive message from the source mobile management network element, comprise in the described message and be used to indicate PDN to connect or a SIPTO indication information element of carrying;
Indication according to the SIPTO indication information element in the described message determines whether to exist the SIPTO PDN corresponding with indication to connect;
Exist corresponding SIPTO PDN to connect if determine the user, then determine whether to discharge described SIPTO PDN connection at the access information of target side according to the user;
Connect if determine to discharge described SIPTO PDN, then carry out the processing that the described SIPTO PDN of deletion connects.
15. method according to claim 14 is characterized in that, described user comprises in following at least one at the access information of target side:
The relevant subscription data of CSG information that the user inserts with user CSG,
Target access network unit supports the ability of SIPTO,
The address of user plane gateway.
16., it is characterized in that described user comprises at least at the access information of target side: the address of user plane gateway according to claim 14 or 15 described methods;
Describedly determine whether to discharge described SIPTO PDN according to the user at the access information of target side and connect and comprise:
Whether the address of determining described user plane gateway is present in the network topology;
If the described SIPTO PDN of described definite release connects, then carry out being treated to of the described SIPTO PDN connection of deletion:
Open up bowl spares if described user plane gateway address is present in described network, then determine to discharge described SIPTOPDN and connect, the message that the described SIPTO PDN of transmission deletion connects is to described source mobile management network element.
17., it is characterized in that described user comprises at the access information of target side according to claim 14 or 15 described methods: the CSG information that relevant subscription data of user CSG and user insert, perhaps target access network unit supports the ability of SIPTO;
Describedly determine whether to discharge described SIPTO according to the user at the access information of target side and connect and comprise:
The CSG information that inserts according to the relevant subscription data of user CSG and user determines whether to discharge described SIPTO PDN and is connected; Perhaps
Supporting the ability of SIPTO to determine whether to discharge described SIPTO PDN according to target access network unit connects;
If the described SIPTO PDN of described definite release connects, then carry out being treated to of the described SIPTO PDN connection of deletion:
If the described SIPTO PDN of definite release connects, the message that then sends the described SIPTO PDN connection of deletion arrives described user plane gateway.
18. method according to claim 17 is characterized in that, the CSG information that described user inserts comprises at least: CSG ID and access module;
The described CSG information that inserts according to the relevant subscription data of user CSG and user determines whether to discharge described SIPTO PDN and is connected at least one item that comprises in following;
If the relevant subscription data of described user CSG does not allow described CSG ID to use SIPTO PDN to connect, then determine to discharge described SIPTO PDN and connect;
If the SIPTO PDN that the relevant subscription data of described user CSG does not allow described CSG ID to use connects move, then determine to discharge described SIPTO PDN and connect;
If described access module is a closed mode, and the subscriber equipment of service is not the contracted user of the relevant subscription data of described user CSG, then determines to discharge described SIPTO PDN and connects.
19. method according to claim 17 is characterized in that, described ability according to the support SIPTO of target access network unit determines whether to discharge described SIPTO PDN connection and comprises:
If the ability of the described target access network support SIPTO of unit is not supported SIPTO, then determine to discharge described SIPTO PDN and connect.
20. a device that discharges connection is characterized in that, comprising:
Receiving element is used to receive the message from the source mobile management network element, comprises in the described message to be used to indicate PDN to connect or a SIPTO indication information element of carrying;
First determining unit is used for determining whether to exist the SIPTO PDN corresponding with indication to connect according to a SIPTO indication information element of described message;
Second determining unit is used for when first determining unit determines to exist corresponding SIPTO PDN to connect, and determines whether to discharge described SIPTO PDN connection according to the user at the access information of target side;
Performance element is used for determining to discharge described SIPTO PDN when second determining unit and connects, and then carries out the processing that the described SIPTO PDN of deletion connects.
21. device according to claim 20 is characterized in that, described user comprises the address of user plane gateway at least at the access information of target side;
Described second determining unit comprises:
The address determination module is used for determining whether to discharge described SIPTOPDN connection according to the address of described user plane gateway;
Then described performance element comprises:
Executive Module is used for when the address determination module determines that the described SIPTO PDN of release connects, and the message that the described SIPTO PDN of transmission deletion connects arrives described source mobile management network element.
22. device according to claim 20 is characterized in that, described user comprises the CSG information that relevant subscription data of user CSG and user insert at least at the access information of target side, and perhaps target access network unit supports the ability of SIPTO;
Described second determining unit comprises:
The information determination module is used for the CSG information according to the relevant subscription data of described user CSG and user's access, perhaps supports the ability of SIPTO according to target access network unit, determines whether to discharge described SIPTO PDN and connects;
Then described performance element comprises:
Sending module is used for when the information determination module determines that the described SIPTO PDN of release connects, and the message that the described SIPTO PDN of transmission deletion connects is to user plane gateway.
23. a system that discharges connection is characterized in that, comprising:
Source is used for when the mobile management network element of service-user changes, and transmission comprises the message of a SIPTO indication information element that is used to indicate PDN to connect or carries to target side;
Target side, be used to receive described message, and determine whether to exist corresponding SIPTO PDN to connect according to the indication of the SIPTO indication information element in the described message, if determine to exist corresponding SIPTO PDN to connect, then determine whether to discharge described SIPTO PDN connection at the access information of target side according to the user; If determine that the described SIPTO PDN of release connects then the processing that described SIPTO PDN connects is deleted in execution.
CN200910171406.5A 2009-08-28 2009-08-28 Method, device and system for releasing connection Active CN102006673B (en)

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