CN102316543A - Serving gateway reselection method, system and equipment - Google Patents
Serving gateway reselection method, system and equipment Download PDFInfo
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- CN102316543A CN102316543A CN2010102211386A CN201010221138A CN102316543A CN 102316543 A CN102316543 A CN 102316543A CN 2010102211386 A CN2010102211386 A CN 2010102211386A CN 201010221138 A CN201010221138 A CN 201010221138A CN 102316543 A CN102316543 A CN 102316543A
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Abstract
The embodiment of the invention discloses a serving gateway reselection method, a serving gateway reselection system and serving gateway reselection equipment, which relate to the field of wireless communication and are used for improving the accuracy of reselecting a serving gateway (SGW) for session connection on which the selected Internet protocol traffic offload (SIPTO) of a data stream is permitted in a tracking area updating (TAU) or routing area updating (RAU) process initiated by user equipment (UE) in an idle state. In the method, the system and the equipment, old core network control equipment notifies whether the SIPTO of the data stream on the session connection of the UE is permitted or not to novel core network control equipment, and the novel core network control equipment reselects the SGW for the session connection according to the notification. The novel core network control equipment can learn that the SIPTO of the data stream on which session connection of the UE is permitted, thereby selecting a proper serving gateway for the session connection on which the SIPTO of the data stream is permitted to improve the accuracy of reselecting the SGW for the session connection by the novel core network control equipment.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of reselecting method, system and equipment of gateway.
Background technology
In selectivity IP data distribution grand (SIPTO Macro) technology; Have through gravity treatment local gateway/local gateway GPRS Support Node (LGW/LGGSN) and realize the method for SIPTO; In this method, network is through selecting to optimize UE to packet data network gateway (PDN GW from the nearer LGW/LGGSN of terminal (UE) attachment point; PGW) route; A large amount of internet (Internet) business is shunted away from LGW/LGGSN, alleviated the pressure of core net (CN) network, like Fig. 1, Fig. 2 and shown in Figure 3; Wherein Fig. 1 uses LGW to realize SIPTO in the evolved packet system (EPS), and Fig. 2 realizes SIPTO for using LGW in service universal packet wireless business affair service node (SGSN) the UMTS system that uses the S4 interface; Fig. 3 realizes SIPTO for using LGGSN in the SGSN UMTS system that uses the Gn/Gp interface.
Under Fig. 1 or Fig. 2 or the network architecture shown in Figure 3; Mobility Management Entity (MME)/SGSN is in the positional information according to UE; Discovery has from the nearer PGW/GGSN existence of UE attachment point; When perhaps detecting UE and having moved out the covering of original LGW/LGGSN, if UE at Idle state initiating updating of tracking area/Routing Area Update (TAU/RAU), then MME/SGSN will reselect LGW/LGGSN for UE in renewal process.
If MME/SGSN does not change (Relocation), then detect whether need be UE gravity treatment LGW/LGGSN by MME/SGSN; If Relocation has taken place MME/SGSN, then detect whether need be UE gravity treatment LGW/LGGSN by new MME/SGSN (new MME/SGSN).
MME/SGSN is after being UE gravity treatment LGW/LGGSN; Need the existing band SIPTO of deexcitation (Deactivate) to allow the PDN of (SIPTO Permission) sign to connect or block data protocol context (PDP Context); And tell PDN between the UE LGW/LGGSN that is initiated to gravity treatment again to connect or PDP Context sets up process through Non-Access Stratum (NAS) message, whole flow process can be divided into following steps:
Step 1: at UE in the TAU/RAU process that Idle state is initiated; SIPTO identification information that MME/SGSN carries through the Access Point Name in the subscription data (APN) and the configuration information of self (the last possible configuration of MME/SGSN use the data flow of which APN can be by SIPTO) learn whether whether need carry out the DNS inquiry needs gravity treatment to detect LGW/LGGSN;
Step 2:MME/SGSN initiates the PDN connection of band SIPTO Permission sign or the deactivation process of PDPContext, and this PDN that deletion LGW/LGGSN goes up UE connects or PDPContext;
Step 3:MME/SGSN is in giving the cell cause of UE, and indication UE rebulids PDN connection or the PDP Context that connects identical APN with SIPTO;
Step 4:UE initiates new PDN connection or PDP Context and sets up process, and the PDN that sets up identical APN connects or PDP Context.
In above-mentioned TAU/RAU process; The gravity treatment of gateway (SGW) also possibly take place; According to the requirement of agreement TS23.401, when gravity treatment SGW, MME/SGSN need consider that current PDN connects or whether PDP Context allows by SIPTO; Promptly UE is in the TAU/RAU process that Idle state is initiated after changing at MME/SGSN, and new MME/SGSN need know before selecting SGW that which PDN connects or PDP Context can be by SIPTO.
PDN connects or block data protocol context (PDP Context) is the session connection between UE and the PDN GW, in the EPS system, uses PDN to connect, and in the UMTS system, uses PDP Context.
In realizing process of the present invention, the inventor finds to exist in the prior art following technical problem:
Demand according to existing protocol; In for the PDN connection or PDP Context gravity treatment LGW process that can use SIPTO; Also need consider the gravity treatment of SGW; If MME/SGSN after changing UE in the TAU/RAU process that Idle state is initiated, new MME/SGSN need know before selecting SGW which PDN connects or PDP Context on data flow can be by SIPTO, yet in the TAU/RAU of existing protocol process; If new MME/SGSN does not have the CAMEL-Subscription-Information of current UE; MME/SGSN need could obtain the CAMEL-Subscription-Information of UE through (Update Location) process that the position is upgraded after having selected SGW, therefore, and under this condition; New MME/SGSN can't learn according to the APN information in the UE CAMEL-Subscription-Information that the data flow on which PDN connection/PDP Context can be by SIPTO before selecting SGW; Therefore can't select suitable SGW for PDN connection/PDP Context, for example can't select to support the SGW of SIPTO, thereby reduce the accuracy of network reselection SGW with SIPTO Permission sign.
Summary of the invention
The embodiment of the invention provides a kind of reselecting method, system and equipment of gateway, is used for improving the TAU/RAU process of initiating at Idle state at UE, for allowing data flow by the accuracy of the session connection gravity treatment SGW of SIPTO.
A kind of gateway reselecting method, this method comprises:
In the process of tracing section updating TAU that Idle state is initiated or routing area updating RAU, old core net control appliance confirms self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify at the terminal; Confirming as when being, the data flow of sending in the said session connection to new core net control appliance allows by the notice of SIPTO;
After new core net control appliance receives said notice, be said session connection gravity treatment gateway SGW according to this notice.
A kind of core net control appliance, this core net control appliance comprises:
Confirm the unit; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU confirm self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify;
Notification unit is used for confirming as when being in said definite unit, and the data flow of sending in the said session connection to the new core net control appliance that receives TAU request or RAU request allows by the notice of SIPTO.
A kind of core net control appliance, this core net control appliance comprises:
Receiving element; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU receive terminal that old core net control appliance sends and the permission of the data flow in the session connection between the packet data network gateway PDN GW by the notice of SIPTO;
Gateway gravity treatment unit, being used for according to said notice is said session connection gravity treatment gateway SGW.
A kind of wireless communication system, this system comprises:
Old core net control appliance; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU confirm self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify; Confirming as when being, the data flow of sending in the said session connection to new core net control appliance allows by the notice of SIPTO;
New core net control appliance, be used to receive said notice after, according to this notice for said session connection gravity treatment gateway SGW.
Among the present invention; At the terminal in the process of TAU that Idle state is initiated or RAU; Whether old core net control appliance allows the data flow in the session connection between terminal and the PDN GW to be notified to new core net control appliance by the information of SIPTO, and new core net control appliance is this session connection gravity treatment SGW according to this notice.It is thus clear that; New core net control appliance can know that the data flow in which session connection at terminal allows by SIPTO among the present invention; Thereby can allow to be selected the proper service gateway by the session connection of SIPTO for data flow, be the accuracy of session connection gravity treatment SGW to improve new core net control appliance.
Description of drawings
Fig. 1 uses LGW to realize the sketch map of shunting in the EPS system in the prior art;
Fig. 2 uses LGW to realize the sketch map of shunting in the S4SGSN UMTS system in the prior art;
Fig. 3 uses LGW to realize the sketch map of shunting in the Gn/Gp SGSN UMTS system in the prior art;
The method flow sketch map that Fig. 4 provides for the embodiment of the invention;
Fig. 5 is the particular flow sheet of the embodiment of the invention;
The system configuration sketch map that Fig. 6 provides for the embodiment of the invention;
The device structure sketch map that Fig. 7 provides for the embodiment of the invention;
Another device structure sketch map that Fig. 8 provides for the embodiment of the invention.
Embodiment
In order to improve at UE in the TAU/RAU process that Idle state is initiated; For data flow allows by the accuracy of the session connection gravity treatment SGW of SIPTO; The embodiment of the invention provides a kind of reselecting method of gateway; In this method; In the process of TAU that Idle state is initiated or RAU, whether old core net control appliance allows the data flow in the session connection at terminal to be notified to new core net control appliance by the information of SIPTO at the terminal, and new core net control appliance is this session connection gravity treatment SGW according to this notice.Old core net control appliance is meant UE at the core net control appliance that carries out being belonged to before the TAU/RAU, and new core net control appliance is meant that UE carries out the core net control appliance that is belonged to after the TAU/RAU.
Referring to Fig. 4, the embodiment of the invention also provides a kind of reselecting method of gateway, specifically may further comprise the steps:
Step 40: in the process of TAU that Idle state is initiated or RAU, old core net control appliance confirms self whether to be that session connection between terminal and the PDN GW is preserved SIPTO and allowed to identify at the terminal; Confirming as when being, the data flow of sending in this session connection to new core net control appliance allows by the notice of SIPTO;
Step 41: after new core net control appliance receives this notice, be said session connection gravity treatment SGW according to this notice.
In the step 40, old core net control appliance can be confirmed in the session connection context of preserving as said session connection, whether to comprise SIPTO and allow sign when receive the context request that new core net control appliance sends.
In the step 40, old core net control appliance allows by the notice of SIPTO to the data flow that new core net control appliance sends in the said session connection, and its concrete realization can be following:
Old core net control appliance is that said session connection increases SIPTO permission sign in context response information, and this context response information is sent to new core net control appliance.
In the step 41, new core net control appliance is a session connection gravity treatment gateway according to the notice that receives, and specifically can be from the gateway tabulation that gets access to, and supports the gateway of SIPTO for the session connection gravity treatment.Certainly, whether the data flow in the session connection supports unique factor that SIPTO considers when being not the gravity treatment gateway, it is also conceivable that the distance at gateway and terminal.For example, when having the gateway of a plurality of support SIPTO, can the nearest gateway in chosen distance terminal.
Preferable; New core net control appliance is when being session connection gravity treatment gateway according to the notice that receives; Can also be session connection gravity treatment PDN GW; Specifically can be from the packet data network gateway tabulation that gets access to, be the session connection gravity treatment PDN GW nearest apart from the gateway of gravity treatment.Certainly, also can gravity treatment satisfy other pre-conditioned PDN GW.
After new core net control appliance is session connection gravity treatment PDN GW; If the address of the PDN GW that session connection is used before the address of the PDN GW of gravity treatment and the gravity treatment is inequality; Then new core net control appliance is initiated the deactivation process to this session connection, and the session connection between the PDN GW of indicating terminal reconstruction and gravity treatment.
Session connection among the present invention can connect or PDP Context etc. for: PDN.Core net control appliance among the present invention can be MME or SGSN etc.
The present invention will be described with specific embodiment below:
This paper propose a kind of at UE in the TAU/RAU process that Idle state is initiated; MME/SGSN takes place under the scene of Relocation; Data flow on which bar PDN connection/PDP Context of old MME/SGSN notice new MME/SGSN allows by the method for SIPTO; Let the new MME/SGSN can correct choice SGW, method step be following:
At first; At UE in the TAU/RAU process that Idle state is initiated; Old MME/SGSN promptly carries SIPTO permision sign notify the data flow on which bar PDN connection/PDP Context to allow by SIPTO to new MME/SGSN in sending to the PDN connection context of new MME/SGSN (PDN Connection Context)/PDP Context;
Then; When new MME/SGSN receives the PDNConnection Context/PDP Context that has SITPO Permission sign; If the configuration of self also allows the last data flow of this PDN connection/PDPContext is carried out SIPTO; Then new MME/SGSN need carry out DNS inquiry and obtains SGW tabulation (List) and PGW List, then according to the suitable＜SGW of tabulation selection, PGW＞right.
As shown in Figure 5, idiographic flow is following:
Step 1:UE initiates the TAU/RAU request;
Step 2:New MME/SGSN sends context request (Context Request) to old MME/SGSN after receiving the TAU/RAU request, with request mobile management context (MM Context) and bearer context (Bearer Context);
When there is SIPTO Permission sign in step 3:Old MME/SGSN in certain PDN Connection Context that preserves or PDPContext, in context response (Context Response) message,, this PDN connection/PDP Context carries SIPTO Permission sign for increasing;
After step 4a:New MME/SGSN receives Context Response message; If carry PDN Connection Context/PDP Context in this message with SIPTO Permission sign; And the configuration of finding self also allows the data flow on this PDN connection/PDP Context is carried out SIPTO, then sends the DNS query requests to domain name resolution server (DNS Server);
After step 4b:DNS Server receives the DNS query requests, return SGW List and PGW List to New MME/SGSN;
Step 5:New MME/SGSN is according to the SIPTO Permission sign of carrying among the PDN Connection Context/PDP Context; From SGW List and PGW List, select suitable＜SGW; PGW＞right, for example select to support SIPTO SGW and and SGW between nearest PGW.New MME/SGSN returns context to Old MME/SGSN and confirms (Context ACK) message;
Step 6:New MME/SGSN accomplishes the TAU/RAU process, and judges that the address of the PGW whether address of the PGW of gravity treatment passes over old MME/SGSN is identical, if difference then carry out the 7th and go on foot, otherwise process ends;
Step 7:New MME/SGSN initiates the Deactivation process to PDN connections/PDP Context, and the SIPTO that indication UE rebuilds between the PDN GW with gravity treatment in giving the cause of UE is connected the completion flow.
In the present embodiment in the step 3 Context Response message need do following modification:
The cell title that needs modification: MME/SGSN UE EPS PDN Connections;
Revise content: the description of this cell is revised as: if on the MME/SGSN that sends this message, exist the PDN of this UE to connect at least, this message just need comprise such cell so.This message can comprise a plurality of these type of cells with same type and example value simultaneously, representes that one group of PDN connects (This IE shall be included if there is at least a PDN connection for this UE on the sending MME/SGSN.Several IEs with this type and instance values shall be included as necessary to represent a list of PDN Connections).
Need to increase following cell in the particular content of MME/SGSN UE EPS PDN Connections:
Cell title: SIPTO Permission;
Cell is described as: whether this cell can be involved allow or forbids by SIPTO (This IE shall be included to Indicate whether the traffic associated with this APN is allowed or prohibited for SIPTO) to indicate APN is relevant therewith data flow;
The cell type is: Indication.
The concrete expression of cell type field is following:
Use the 8th bit implication of the 6th byte of cell type field to represent the SP sign; If this flag is 1; Represent that corresponding PDN connection/PDP Context has SIPTO Permission sign, so the data flow on this PDN connection/PDP Context allows by SIPTO.
Referring to Fig. 6, the embodiment of the invention also provides a kind of wireless communication system, and this system comprises:
Old core net control appliance 60, TAU that is used at the terminal initiating at Idle state or the process of RAU confirm self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify; Confirming as when being, the data flow of sending in the said session connection to new core net control appliance allows by the notice of SIPTO;
New core net control appliance 61, be used to receive said notice after, according to this notice for said session connection gravity treatment gateway SGW.
Said new core net control appliance 61 also is used for:
During for said session connection gravity treatment gateway SGW, be said session connection gravity treatment PDN GW according to this notice.
Referring to Fig. 7, the embodiment of the invention also provides a kind of core net control appliance, can be applied in the above-mentioned wireless communication system, and this core net control appliance comprises:
Said definite unit 70 is used for:
When receiving the context request that new core net control appliance sends, confirm in the session connection context of preserving as said session connection, whether to comprise SIPTO and allow sign.
Said notification unit 71 is used for:
Be that said session connection increases SIPTO permission sign in context response information, and this context response information is sent to new core net control appliance.
Said session connection is:
PDN connects or PDP Context.
Said core net control appliance is:
MME or SGSN.
Referring to Fig. 8, the embodiment of the invention also provides a kind of core net control appliance, can be applied in the above-mentioned wireless communication system, and this core net control appliance comprises:
Receiving element 80, TAU that is used at the terminal initiating at Idle state or the process of RAU receive terminal that old core net control appliance sends and the permission of the data flow in the session connection between the PDN GW by the notice of SIPTO;
Gateway gravity treatment unit 81, being used for according to said notice is said session connection gravity treatment SGW.
Said gateway gravity treatment unit 81 is used for:
From the gateway tabulation that gets access to, support the gateway of SIPTO for said session connection gravity treatment.
Said gateway gravity treatment unit 81 also is used for:
When being said session connection gravity treatment gateway according to said notice, be said session connection gravity treatment PDN GW.
Said gateway gravity treatment unit 81 is used for:
From the packet data network gateway tabulation that gets access to, be the said session connection gravity treatment PDN GW nearest apart from the gateway of gravity treatment.
This core net control appliance also comprises:
Connection reconstruction unit 82; Be used for the address of the PDN GW that said session connection is used before the address of the PDN of gravity treatment GW and gravity treatment when inequality; Initiation is to the deactivation process of said session connection, and the session connection between the PDN GW of indicating terminal reconstruction and gravity treatment.
Said session connection is:
PDN connects or PDP Context.
Said core net control appliance is:
MME or SGSN.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the invention provides; At the terminal in the process of TAU that Idle state is initiated or RAU; Whether old core net control appliance allows the data flow in the session connection between terminal and the PDN GW to be notified to new core net control appliance by the information of SIPTO, and new core net control appliance is this session connection gravity treatment SGW according to this notice.It is thus clear that; New core net control appliance can know that the data flow in which session connection (comprising PDN connection/PDP Context) at terminal allows by SIPTO among the present invention; Thereby can allow to be selected the proper service gateway by the session connection of SIPTO for data flow, be the accuracy of session connection gravity treatment SGW to improve new core net control appliance.
Simultaneously, when gravity treatment SGW, also will carry out the selection of PGW among the present invention, optimum to obtain＜SGW, PGW＞right makes network better support SIPTO.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (21)
1. the reselecting method of a gateway is characterized in that, this method comprises:
In the process of tracing section updating TAU that Idle state is initiated or routing area updating RAU, old core net control appliance confirms self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify at the terminal; Confirming as when being, the data flow of sending in the said session connection to new core net control appliance allows by the notice of SIPTO;
After new core net control appliance receives said notice, be said session connection gravity treatment gateway SGW according to this notice.
2. the method for claim 1 is characterized in that, old core net control appliance confirms self whether to be that session connection between terminal and the PDN GW is preserved SIPTO and allowed sign to comprise:
When old core net control appliance receives the context request that new core net control appliance sends, confirm in the session connection context of preserving as said session connection, whether to comprise SIPTO and allow sign.
3. method as claimed in claim 2 is characterized in that, said data flow of sending in the said session connection to new core net control appliance allows to be comprised by the notice of SIPTO:
Old core net control appliance will carry the context response information that the SIPTO that increases into said session connection allows sign, send to new core net control appliance.
4. the method for claim 1 is characterized in that, saidly comprises for said session connection gravity treatment gateway according to this notice:
New core net control appliance is supported the gateway of SIPTO for said session connection gravity treatment from the gateway tabulation that gets access to.
5. like arbitrary described method among the claim 1-4, it is characterized in that, also comprising during for said session connection gravity treatment gateway according to this notice:
New core net control appliance is said session connection gravity treatment PDN GW.
6. method as claimed in claim 5 is characterized in that, said new mobile management is that said session connection gravity treatment PDN GW comprises:
New core net control appliance is the said session connection gravity treatment PDN GW nearest apart from the gateway of gravity treatment from the packet data network gateway tabulation that gets access to.
7. method as claimed in claim 5 is characterized in that, after new core net control appliance was said session connection gravity treatment PDN GW, this method further comprised:
When the address of the PDN GW that said session connection is used before the address of the PDN of gravity treatment GW and gravity treatment is inequality; New core net control appliance is initiated the deactivation process to said session connection, and the session connection between the PDN GW of indicating terminal reconstruction and gravity treatment.
8. like arbitrary described method among the claim 1-4, it is characterized in that said session connection is:
PDN connects or block data protocol context PDP Context.
9. like arbitrary described method among the claim 1-4, it is characterized in that said core net control appliance is:
Mobility Management Entity MME or service universal packet wireless business affair service node SGSN.
10. a core net control appliance is characterized in that, this core net control appliance comprises:
Confirm the unit; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU confirm self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify;
Notification unit is used for confirming as when being in said definite unit, and the data flow of sending in the said session connection to the new core net control appliance that receives TAU request or RAU request allows by the notice of SIPTO.
11. core net control appliance as claimed in claim 10 is characterized in that, said definite unit is used for:
When receiving the context request that new core net control appliance sends, confirm in the session connection context of preserving as said session connection, whether to comprise SIPTO and allow sign.
12. core net control appliance as claimed in claim 11 is characterized in that, said notification unit is used for:
Context response information with carrying the SIPTO permission sign that increases for said session connection sends to new core net control appliance.
13., it is characterized in that said core net control appliance is like arbitrary described core net control appliance among the claim 10-12:
Mobility Management Entity MME or service universal packet wireless business affair service node SGSN.
14. a core net control appliance is characterized in that, this core net control appliance comprises:
Receiving element; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU receive terminal that old core net control appliance sends and the permission of the data flow in the session connection between the packet data network gateway PDN GW by the notice of SIPTO;
Gateway gravity treatment unit, being used for according to said notice is said session connection gravity treatment gateway SGW.
15. core net control appliance as claimed in claim 14 is characterized in that, said gateway gravity treatment unit is used for:
From the gateway tabulation that gets access to, support the gateway of SIPTO for said session connection gravity treatment.
16., it is characterized in that said gateway gravity treatment unit also is used for like claim 14 or 15 described core net control appliances:
When being said session connection gravity treatment gateway according to said notice, be said session connection gravity treatment PDN GW.
17. core net control appliance as claimed in claim 16 is characterized in that, said gateway gravity treatment unit is used for:
From the packet data network gateway tabulation that gets access to, be the said session connection gravity treatment PDN GW nearest apart from the gateway of gravity treatment.
18. core net control appliance as claimed in claim 16 is characterized in that, this core net control appliance also comprises:
The connection reconstruction unit; Be used for the address of the PDN GW that said session connection is used before the address of the PDN of gravity treatment GW and gravity treatment when inequality; Initiation is to the deactivation process of said session connection, and the session connection between the PDN GW of indicating terminal reconstruction and gravity treatment.
19., it is characterized in that said core net control appliance is like claim 14 or 15 described core net control appliances:
Mobility Management Entity MME or service universal packet wireless business affair service node SGSN.
20. a wireless communication system is characterized in that, this system comprises:
Old core net control appliance; The tracing section updating TAU that is used at the terminal initiating at Idle state or the process of routing area updating RAU confirm self whether to be that session connection between terminal and the packet data network gateway PDN GW is preserved selectivity IP data distribution SIPTO and allowed to identify; Confirming as when being, the data flow of sending in the said session connection to new core net control appliance allows by the notice of SIPTO;
New core net control appliance, be used to receive said notice after, according to this notice for said session connection gravity treatment gateway SGW.
21. system as claimed in claim 20 is characterized in that, said new core net control appliance also is used for:
During for said session connection gravity treatment gateway SGW, be said session connection gravity treatment PDN GW according to this notice.
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| CN2010102211386A CN102316543A (en) | 2010-06-29 | 2010-06-29 | Serving gateway reselection method, system and equipment |
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| CN2010102211386A CN102316543A (en) | 2010-06-29 | 2010-06-29 | Serving gateway reselection method, system and equipment |
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| CN104661205B (en) * | 2013-11-22 | 2019-12-03 | 中兴通讯股份有限公司 | A kind of gateway updates information notice method and controller |
| WO2014183715A1 (en) * | 2013-11-22 | 2014-11-20 | 中兴通讯股份有限公司 | Gateway update information notification method, and controller |
| CN104661205A (en) * | 2013-11-22 | 2015-05-27 | 中兴通讯股份有限公司 | Gateway updating information notifying method and controller |
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| CN104684044A (en) * | 2013-11-29 | 2015-06-03 | 中兴通讯股份有限公司 | Route establishing method, controller and mobility management entity |
| CN104684044B (en) * | 2013-11-29 | 2019-04-16 | 中兴通讯股份有限公司 | A kind of method, controller and mobility management entity that path is established |
| CN105813146A (en) * | 2014-12-31 | 2016-07-27 | 中兴通讯股份有限公司 | Service flow transmission path optimizing method and device and MME |
| CN105813146B (en) * | 2014-12-31 | 2020-09-08 | 中兴通讯股份有限公司 | Service flow transmission path optimization method and device and MME |
| CN108605252A (en) * | 2016-02-08 | 2018-09-28 | 智慧天空网络有限公司 | The seamless reorientation of mobile terminal in wireless network |
| US10548059B2 (en) | 2016-02-08 | 2020-01-28 | Smartsky Networks LLC | Seamless relocation of a mobile terminal in a wireless network |
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| CN108702611A (en) * | 2016-02-15 | 2018-10-23 | 瑞典爱立信有限公司 | The Centroid management of UE contexts |
| CN108702611B (en) * | 2016-02-15 | 2021-07-06 | 瑞典爱立信有限公司 | Central node management of UE context |
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| CN112312426A (en) * | 2019-07-31 | 2021-02-02 | 中国移动通信集团吉林有限公司 | Selection method of core network gateway, mobility management entity and gateway equipment |
| CN112312426B (en) * | 2019-07-31 | 2023-07-21 | 中国移动通信集团吉林有限公司 | Core network gateway selection method, mobility management entity and gateway equipment |
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Application publication date: 20120111 |