CN101494853B - Method for obtaining context information, mobility management entity and communication system - Google Patents

Method for obtaining context information, mobility management entity and communication system Download PDF

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CN101494853B
CN101494853B CN2008100878114A CN200810087811A CN101494853B CN 101494853 B CN101494853 B CN 101494853B CN 2008100878114 A CN2008100878114 A CN 2008100878114A CN 200810087811 A CN200810087811 A CN 200810087811A CN 101494853 B CN101494853 B CN 101494853B
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mobility management
management entity
context
information
indication
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CN101494853A (en
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周汉
吴问付
胡伟华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention discloses a method for obtaining context information in scene of saving signaling. In the method, the target mobility management entity sends a context request message carrying indication information to the source side mobility management entity according to the received position zone updating message, to indicate the source side mobility management entity to return corresponding context information. Thereby, the invention reduces the information redundancy in the context request and context response messages between the target mobility management entity and the source side mobility management entity. In addition, the invention further discloses a mobility management entity and communication system.

Description

Obtain method, Mobility Management Entity and the communication system of contextual information
Technical field
The present invention relates to communication technical field, relate in particular to a kind ofly under the scene of saving signaling, obtain method, Mobility Management Entity and the system of contextual information.
Background technology
Present wireless network evolution architecture is as shown in Figure 1; Its core net mainly comprises MME (MobilityManagement Entity; Mobile management network element), Serving Gateway (S-GW, gateway), three logic function bodies of PDN Gateway (PDN-GW, grouped data network gateway); Wherein, MME is responsible for NAS (Non Access Stratum; Non-Access Stratum) functions such as signaling and the encryption of NAS signaling and roaming, tracking, distributing user temporary identity sign, safety function etc., it is corresponding to current UMTS (Universal Mobile Telecommunications System; UMTS) the control plane part of inner SGSN (Serving GPRS Support Node, Serving GPRS Support Node).S-GW is responsible for the local mobility anchor point and the mobility anchor point and the Lawful Interception relevant information of 3GPP internal system.PDN-GW is responsible for strategy execution and charging and Lawful Interception correlation function.
A demand of evolvement network is to realize ISR (Idle mode Signalling Reduction, the saving signaling under the idle condition) function, and it mainly is the mobile management flow process of UE between different access networks that reduces under the idle pulley.The solution of the mechanism of the ISR between the 3GPP access network is two login mechanisms at present; Be that UE registers at two different access networks; To not trigger Inter 3GPP Access System Mobility flow process when the UE under the idle pulley moves like this between these two access networks; The RAU/TAU between system (Routeing Area Update/Tracking Area Update, Routing Area Update/tracing section updating) flow process for example.
Under existing ISR mechanism; When at SAE (System Architecture Evolution; System Architecture Evolution) and after two kinds of networks of UMTS have set up ISR mechanism; If activation, modification or the deletion of bearer context take place in the current network of stopping UE, when UE moved in the network of opposite end, UE can initiatively initiate the bearer context information of TAU or the next synchronous both sides of RAU flow process so.As shown in Figure 2, be the synchronous flow chart of bearer context under the ISR mechanism scene.Comprise:
The activation of carrying, modification or deletion flow process have taken place in step 201, UE in current UMTS network of stopping;
Step 202, after UE moves to opposite end SAE network, UE will initiatively initiate the TAU flow process; UE sends out TAU request (tracing section updating request) message to MME2, wherein carries S-TMSI (identify label of SAE temporarily moved subscriber), P-TMSI (Packet Temporary Mobile Subscriber Identity sign), Update Type:ISR Sync (updating type: ISR is synchronous);
Step 203, MME2 send out context request message to SGSN1 and ask for contextual information and ISR ability to it;
Step 204, SGSN1 return context response information to MME2, wherein carry contextual information and ISR ability thereof;
Step 205, MME2 send context acknowledgement message to SGSN1, wherein indicate SGSN1 ISR mechanism to set up;
Step 206, MME2 send out TAU accept (tracing section updating acceptance) message to UE, and indication TAU flow process is accomplished, and indication UE ISR mechanism is set up.
If after source MME and SGSN set up ISR mechanism, UE had moved to the MME or the SGSN of target side again, and TAU or RAU flow process also will take place.UE in TAU/RAU request message with old S-TMSI, old TAI, old P-TMSI, cells such as old RAI give the MME or the SGSN of target side.The MME of target side or SGSN can utilize these cells to go the MME of addressing source and SGSN to obtain bearer context information.As shown in Figure 3, TAU flow chart under the ISR mechanism that provides for prior art.Comprise:
Step 301, because UE is moved to MME1 from the MME2 coverage covers down, UE will initiatively initiate the TAU flow process; UE sends TAU request message to MME1, wherein carries oldS-TMSI, old TAI, old P-TMSI, old RAI, cells such as Update Type:ISR sync;
Step 302, MME1 send out context request message to MME2 and ask for contextual information;
Step 303, MME2 return context response information to MME1, return contextual information;
Step 304, MME1 send out context acknowledgement message to MME2, and its contextual information is received in indication;
Step 305, MME1 send out context request message to SGSN1 and ask for contextual information and ISR ability thereof;
Step 306, SGSN1 return context response information to MME1, return contextual information, and its ISR ability is provided;
Step 307, MME1 send out context acknowledgement message to SGSN1, and its contextual information is received in indication, and indication ISR mechanism is set up;
Step 308, MME1 indicate to UE through TAU accept message, and expression TAU flow process finishes, and has distributed new S-TMSI to UE, and indication UE ISR mechanism is set up;
In realizing process of the present invention; The inventor is through discovering in the prior art; The contextual information of asking for that the MME1 of target side does not have selection through context request message to the SGSN1 and the MME2 of source; And the SGSN1 of source and MME2 return to target side MME1 contextual information through what context response did not have a selection, can cause the information redundancy in the context response information like this.
Summary of the invention
It is a kind of under the scene of saving signaling that the embodiment of the invention provides; Obtain method, Mobility Management Entity and the system of contextual information, can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.
The embodiment of the invention provides following technical scheme:
The embodiment of the invention provides a kind of method of obtaining contextual information, comprising:
Target side Mobility Management Entity receiving position district updating message;
The target side Mobility Management Entity sends the context request message of carrying indication information according to said location area updating message to the source Mobility Management Entity, returns corresponding contextual information with indication source Mobility Management Entity.
The embodiment of the invention also provides a kind of Mobility Management Entity, comprising:
First transmitting element is used for sending the context request message of carrying indication information according to the location area updating message that receives to the opposite end Mobility Management Entity, returns corresponding contextual information with indication opposite end Mobility Management Entity;
First receiving element is used to receive the corresponding contextual information that the opposite end Mobility Management Entity returns.
In addition, the embodiment of the invention also provides a kind of Mobility Management Entity, comprising:
Second receiving element is used to receive the context request message that the opposite end Mobility Management Entity sends;
Second transmitting element is used for the indication information according to said context request message, returns corresponding contextual information to the opposite end Mobility Management Entity.
The embodiment of the invention also provides a kind of target side Mobility Management Entity and source Mobility Management Entity that comprises said structure.
The embodiment of the invention can realize that the target side Mobility Management Entity is selectively to the source request for information; And source only provides its needed information according to the indication of target side Mobility Management Entity, thereby can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.
Description of drawings
Fig. 1 is prior art radio gradual network structure figure;
Fig. 2 is the synchronous flow chart of bearer context under the prior art ISR mechanism scene;
Fig. 3 is a tracing section updating flow chart under the prior art ISR mechanism scene;
Fig. 4 is the tracing section updating flow chart that subscriber equipment is initiated under the embodiment of the invention one ISR mechanism scene;
Fig. 5 is the Routing Area Update flow chart that subscriber equipment is initiated under the embodiment of the invention two ISR mechanism scene;
Fig. 6 is the tracing section updating flow chart that the embodiment of the invention three subscriber equipmenies are initiated;
Fig. 7 is the Routing Area Update flow chart that embodiment of the invention four-function family equipment is initiated;
Fig. 8 is the structural representation of the embodiment of the invention five Mobility Management Entity;
Fig. 9 is the structural representation of the embodiment of the invention six Mobility Management Entity;
Figure 10 is the structural representation of the embodiment of the invention nine communication systems.
Embodiment
It is a kind of under the scene of saving signaling that the embodiment of the invention provides; Obtain method, Mobility Management Entity and the system of contextual information, can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.For making the object of the invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings is to further explain of the present invention.
The method of obtaining contextual information that the embodiment of the invention provides comprises:
Target side Mobility Management Entity receiving position district updating message;
The target side Mobility Management Entity sends the context request message of carrying indication information according to said location area updating message to the source Mobility Management Entity, returns corresponding contextual information with indication source Mobility Management Entity.Following several kinds of situation specifically can be arranged:
The target side Mobility Management Entity receives the location area updating message that subscriber equipment sends, and carries in the said message to be used to indicate whether updating type is the synchronous cell of ISR, like updating type Update Type:ISR sync;
The target side Mobility Management Entity is according to said cell Update Type:ISR sync; Send the context request message of carrying indication information to the source Mobility Management Entity; To carry MM Context information in the context response information of indicating the source Mobility Management Entity to return; Perhaps bearer context and ISR ability information, perhaps ISR ability information.
Particularly; When updating type is that ISR is when synchronous; Like cell Update Type:ISR sync flag bit when effective; The target side Mobility Management Entity sends the context request message of carrying first indication information element to the Mobility Management Entity of the wireless access system of source same type, carries MM Context information in the context response information of returning with the Mobility Management Entity of the wireless access system of indication source same type; The target side Mobility Management Entity sends the context request message of carrying second indication information element to the Mobility Management Entity of the dissimilar wireless access system of source, carries bearer context and ISR ability information in the context response information of returning with the Mobility Management Entity of the dissimilar wireless access system of indication source; And
When updating type is that non-ISR is when synchronous; When cell Update Type:ISR sync flag bit is invalid; The target side Mobility Management Entity sends the context request message of carrying the 3rd indication information element to the Mobility Management Entity of the dissimilar wireless access system of source, carries the ISR ability information in the context response information of returning with the Mobility Management Entity of the dissimilar wireless access system of indication source.
In said location area updating message, carry indicating bit information; Said indicating bit information is used to indicate the up-to-date bearer context information of subscriber equipment when the concrete network of source; After then the target side Mobility Management Entity is confirmed the concrete network at the bearer context information place that subscriber equipment is up-to-date according to said indicating bit information; Send the context request message of carrying indication information according to said location area updating message to the source Mobility Management Entity again, return corresponding contextual information with indication source Mobility Management Entity.
Particularly; Said target side Mobility Management Entity sends the context request message of carrying indication information according to said location area updating message to the source Mobility Management Entity; Return corresponding contextual information with indication source Mobility Management Entity, what corresponding contextual information can be in the following situation is a kind of:
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns safe context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns MM Context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns bearer context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns bearer context information and its ISR ability in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns its ISR ability in order to indication source Mobility Management Entity;
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element returns bearer context and MM Context information in order to indication source Mobility Management Entity.
In addition; After the context response information that said target side Mobility Management Entity receives from the source Mobility Management Entity; Send the context acknowledgement message of carrying the 4th indication information element to the source Mobility Management Entity, with indication source Mobility Management Entity ISR deexcitation.
For example; Said target side Mobility Management Entity carries MM Context information from the context response information that the Mobility Management Entity of the wireless access system of source same type receives; Also comprise afterwards: the target side Mobility Management Entity sends the context acknowledgement message of carrying the 4th indication information element to the Mobility Management Entity of the wireless access system of source same type, with the Mobility Management Entity ISR deexcitation of the wireless access system of indication source same type.
Need to prove that for the GERAN/UTRAN network, said Mobility Management Entity is meant SGSN; For the E-UTRAN networking, said Mobility Management Entity is meant MME.
Respectively tracing section updating and Routing Area Update flow process are done concrete description through concrete embodiment below.
Tracing section updating flow chart as shown in Figure 4, that subscriber equipment is initiated under the ISR mechanism scene that provides for the embodiment of the invention one comprises following process:
Step 401, UE send tracing section updating message to target side MME1, are with oldS-TMSI in the message, old TAI, old P-TMSI, old RAI and cell Update Type:ISR sync;
Wherein, If foundation, modification or the deletion of bearer context have taken place in UE under source SGSN1; But not with source MME2 when mutual, cell Update Type:ISR sync flag bit is effective, and target side MME1 need arrive and obtain up-to-date bearer context information among the source SGSN1 at this moment.If Update Type:ISR sync flag bit is invalid; Explain that then the bearer context information among source SGSN1 and the MME2 is synchronous; Target side MME1 can be preferentially obtains bearer context in the Mobility Management Entity of the wireless access system of same type so, promptly from source MME2, obtains bearer context.
Step 402, target side MME1 send context request message to source MME2 and ask for contextual information;
Wherein, If the cell Update Type:ISR sync flag bit in the step 401 is invalid; Target side MME1 asks for all contextual informations to source MME2 so, promptly comprises MM Context information and bearer context information, that is to say that context request message does not make an amendment.If the cell Update Type:ISR sync flag bit in the step 401 is effective, target side MME1 increases cell in context request message so, and being used to identify target side MME1 only needs source MME2 that MM Context is provided.Particularly, can in context request message, increase cell: Only for MMContext, if its sign place value is 1, it is effective then to identify this flag bit; If its sign place value is 0, it is invalid then to identify this flag bit.
Step 403, source MME2 return context response information to target side MME1;
Wherein, if the cell Only for MM Context flag bit in the context request message in step 402 is invalid, source MME2 returns to target side MM1 with whole contextual informations in context response information so.If cell Only for MM Context flag bit is effective, source MME2 only returns to target side MM1 with MM Context information in context response information so.
Step 404, target side MME1 send context acknowledgement message to source MME2, are used to indicate source MME2ISR deexcitation;
Particularly, can in context acknowledgement message, increase cell: ISR Deactive, if its sign place value is 1, it is effective then to identify this flag bit, and ISR deexcitation is described; If its sign place value is 0, it is invalid then to identify this flag bit, and not deexcitation of ISR is described.
Step 405, target side MME1 send context request message to source SGSN1;
Wherein, if the cell Update Type:ISR sync flag bit in the step 401 is effective, to context request message that source SGSN1 send in be provided with increase cell at target side MME1 this moment: Only forbearer Context.Effective when its flag bit, show that then target side MME1 only needs source SGSN1 that bearer context and its ISR ability information are provided.Can be set at: when its flag bit was 1, this flag bit was effective; When this flag bit was 0, this flag bit was invalid.
If the cell Update Type:ISR sync flag bit in the step 401 is invalid; Target side MME1 sends context request message to source SGSN1; Through in context request message, increasing cell: Onlyfor ISR Capability, SGSN1 only need return to target side MME1 with its ISR ability with the indication source.If this sign place value is 1, it is effective then to identify this flag bit; If this sign place value is 0, it is invalid to identify this flag bit.
Step 406, source SGSN1 return context response information to target side MME1;
Wherein, if the cell Only for bearerContext flag bit in the context request message in step 405 is effective, source SGSN1 will only return bearer context and its ISR ability information in context response information so.If the cell Onlyfor ISR Capability flag bit in the context request message in step 405 is effective, source SGSN1 will only return its ISR ability information in context response information so.
Step 407, target side MME1 send context acknowledgement message and give source SGSN1, and whether indication ISR mechanism sets up success;
Step 408, target side MME1 send tracing section updating and accept message to UE, and whether indication ISR mechanism is set up in this message.
Need to prove; Because (the Evolved UMTS Territorial RadioAccess Network of EUTRAN system; The UMTS Terrestrial radio access network of evolution) and (the UMTSTerritorial Radio Access Network of UTRAN system; UMTS Terrestrial radio access network) safe context is separate, and its safe context is to be comprised in the MM Context through the context response information transmission.Putting before this; If having the MME/SGSN to source of selection, target side MME/SGSN do not obtain contextual information; What source MME/SGSN did not have a selection returns contextual information to target side MME/SGSN, and the MME/SGSN that will increase target side like this judges which is the step of correct MM Context information.And pass through the foregoing description; Target side MME1 is only under the effective situation of flag bit of cell Update Type:ISR sync; To source MME2 acquisition request MM Context information, can reduce the step of the judicious MM Context information of the MME1/SGSN2 of target side in the prior art through context request message like this.
Routing Area Update flow chart as shown in Figure 5, that subscriber equipment is initiated under the ISR mechanism scene that provides for the embodiment of the invention two comprises following process:
Step 501, UE send Routing Area Update message to target side SGSN2, are with oldS-TMSI in the message, old TAI, old P-TMSI, old RAI and cell Update Type:ISR sync;
Wherein, If foundation, modification or the deletion of bearer context have taken place in UE under source MME2; But not with source SGSN1 when mutual, cell Update Type:ISR sync flag bit is effective, and target side SGSN2 need arrive and obtain up-to-date bearer context information among the source MME2 at this moment.If Update Type:ISR sync flag bit is invalid; Explain that then the bearer context information among source SGSN1 and the MME2 is synchronous; Target side SGSN2 can be preferentially obtains bearer context in the Mobility Management Entity of the wireless access system of same type so, promptly from source SGSN1, obtains bearer context.
Step 502, target side SGSN2 send context request message to source SGSN1 and ask for contextual information;
Wherein, If the cell Update Type:ISR sync flag bit in the step 501 is invalid; Target side SGSN2 asks for all contextual informations to source SGSN1 so, promptly comprises MM Context information and bearer context information, that is to say that context request message does not make an amendment.If the cell Update Type:ISR sync flag bit in the step 501 is effective, target side SGSN2 increases cell in context request message so, and being used to identify target side SGSN2 only needs source SGSN1 that MM Context is provided.Particularly, can in context request message, increase cell: Only for MMContext, if its sign place value is 1, it is effective then to identify this flag bit; If its sign place value is 0, it is invalid then to identify this flag bit.
Step 503, source SGSN1 return context response information to target side SGSN2;
Wherein, if the cell Only for MM Context flag bit in the context request message in step 502 is invalid, source SGSN1 returns to target side SGSN2 with whole contextual informations in context response information so.If cell Only for MM Context flag bit is effective, source SGSN1 will only return to target side SGSN2 with MM Context information in context response information so.
Step 504, target side SGSN2 send context acknowledgement message to source SGSN1, are used to indicate source SGSN1 ISR deexcitation;
Particularly, can in context acknowledgement message, increase cell: ISR Deactive, if its sign place value is 1, it is effective then to identify this flag bit, and ISR deexcitation is described; If its sign place value is 0, it is invalid then to identify this flag bit, and not deexcitation of ISR is described.
Step 505, target side SGSN2 send context request message to source MME2;
Wherein, if the cell Update Type:ISR sync flag bit in the step 501 is effective, to context request message that source MME2 send in be provided with increase cell at target side SGSN2 this moment: Only forbearer Context.Effective when its flag bit, show that then target side SGSN2 only needs source MME2 that bearer context and its ISR ability information are provided.Can be set at: when its flag bit was 1, this flag bit was effective; When this flag bit was 0, this flag bit was invalid.
If the cell Update Type:ISR sync flag bit in the step 501 is invalid; Target side SGSN2 sends context request message to source MME2; Through in context request message, increasing cell: Onlyfor ISR Capability, MME2 only need return to target side SGSN2 with its ISR ability with the indication source.If this sign place value is 1, it is effective then to identify this flag bit; If this sign place value is 0, it is invalid to identify this flag bit.
Step 506, source MME2 return context response information to target side SGSN2;
Wherein, if the cell Only for bearerContext flag bit in the context request message in step 505 is effective, source MME2 will only return bearer context and its ISR ability information in context response information so.If the cell Only forISR Capability flag bit in the context request message in step 505 is effective, source MME2 will only return its ISR ability information in context response information so.
Step 507, target side SGSN2 send context acknowledgement message and give source MME2, and whether indication ISR mechanism sets up success;
Step 508, target side SGSN2 send Routing Area Update and accept message to UE, and whether indication ISR mechanism is set up in this message.
Need to prove; For the step of the judicious MM Context information of the MME1/SGSN2 that reduces target side, target side SGSN2 can only pass through context request message to source SGSN1 acquisition request MM Context information in step 502.
In addition; Described cell Only for MM Context, Only for bearer Context, Only forISR Capability and ISR Deactive include but not limited to the described cell that in context request message or context acknowledgement message, increases newly like above-mentioned embodiment; Can also be the transformation of existing cell in context request message or the context acknowledgement message, as long as can realize the function of indicating.
Pass through the foregoing description; Target side SGSN2 is only under the effective situation of flag bit of cell Update Type:ISR sync; To source SGSN1 acquisition request MM Context information, can reduce the step of the judicious MM Context information of the MME1/SGSN2 of target side in the prior art through context request message like this.
Tracing section updating flow chart as shown in Figure 6, that the subscriber equipment that provides for the embodiment of the invention three is initiated comprises following process:
Step 601, UE send the tracing section updating request message to target side MME1, and with going up old global unique temporary identity old GUTI, old Packet Temporary Mobile Subscriber Identity identifies old P-TMSI, old route district information old RAI in the message;
Wherein, UE carries indicating bit information in the tracing section updating request message that target side MME1 sends, be used for indicating the bearer context of UE is up-to-date at which network of source.Indicating bit information has following processing method:
Mode one: UE carries the synchronous cell of ISR in the tracing section updating request message that sends to target side MME1, like Update Type cell.If foundation, modification or the deletion of bearer context have taken place in UE under source SGSN1; But not and source MME2 when mutual; Cell Update Type is set to " ISR sync ", and target side MME1 need arrive and obtain up-to-date bearer context information among the source SGSN1 this moment.If the value of Update type is not carry the UpdateType cell in ISR sync or the message; Explain that then the bearer context information among source SGSN1 and the MME2 is synchronous; Target side MME1 can be preferentially obtains bearer context in the Mobility Management Entity of the wireless access system of same type so, promptly from source MME2, obtains bearer context.
The last resident system was placed on the front of the temporary mark of another one system assignment before mode two: UE will switch to the temporary mark of its distribution.For example, when UE the last resident system before switching is MME2, old GUTI places old P-TMSI front in the message cell is arranged so, shows that the bearer context of UE in source MME2 is up-to-date; When UE the last resident system before switching is SGSN1, old P-TMSI places old GUTI front in the message cell is arranged so, shows that the bearer context of UE in source SGSN1 is up-to-date.Therefore; The bearer context that the Mobility Management Entity of target side is judged in which network of source according to putting in order of above-mentioned temporary mark is up-to-date, sends the context request message that has different indication informations to the source Mobility Management Entity then and obtains different contextual informations.Wherein, old GUTI is that source network MME2 is the temporary mark that UE distributes, and old P-TMSI be source network SGSN1 is the temporary mark that UE distributes.When UE occurrence positions district upgraded, UE can bring above-mentioned two temporary marks the Mobility Management Entity of target side in the location area updating request.The Mobility Management Entity of target side utilizes the Mobility Management Entity of above-mentioned two temporary mark whereabouts sources to ask for contextual information.
Mode three: UE carries bearer update indication Bearer Update Indication cell in the tracing section updating request message that sends to target side MME1.The bearer context information of this cell indication UE is up-to-date in which network.For example, the bearer context of UE is up-to-date in the GERAN/UTRAN network, and then the value of this cell is set is GERAN/UTRAN to UE; The bearer context of UE is up-to-date in the E-UTRAN network, and then the value of this cell is set is E-UTRAN to UE.
Step 602, target side MME1 send context request message to source MME2 and ask for contextual information;
Wherein, if the bearer context information among the UE indication source MME2 is up-to-date in the step 601, target side MME1 asks for all contextual informations to source MME2 so, promptly comprises MM Context information and bearer context information.Specifically can handle according to following mode:
1, target side MME1 carries context indication information Contextindication cell in context request message.This cell has following value:
1) 0, return all contextual informations;
2) 1, only return safe context information;
3) 2, only return MM Context information;
4) 3, only return bearer context information;
5) 4, only return the ISR ability information;
6) 5, only return bearer context information and its ISR ability.
For this step, target side MME1 is set to 0 (promptly returning all contextual informations).
2, target side MME1 does not carry Context indication cell in context request message, and source MME2 is default to be thought and return all contextual informations.
If the bearer context information among the UE indication source SGSN1 is up-to-date, target side MME1 increases cell in context request message so, and being used to identify target side MME1 only needs source MME2 that MM Context or safe context are provided.For example, the target side MME1 value of in context request message, carrying Context indication cell and this cell being set is 1 (only returning safe context information) or 2 (only returning MM Context information).
Step 603, source MME2 return context response information to target side MME1;
Wherein, if all contextual informations of target side MME1 acquisition request in the context request message in step 602, source MME2 returns to target side MME1 with whole contextual informations in context response information so.If target side MME1 request is only obtained safe context information or only obtained the MM contextual information, source MME2 will only return to target side MME1 with MM Context information or safe context information in context response information so.
Step 604, target side MME1 send context acknowledgement message to source MME2, are used to indicate source MME2ISR deexcitation;
Particularly, can in context acknowledgement message, increase cell: ISR Deactive, if its sign place value is 1, it is effective then to identify this flag bit, and ISR deexcitation is described; If its sign place value is 0, it is invalid then to identify this flag bit, and not deexcitation of ISR is described.
Step 605, target side MME1 send context request message to source SGSN1;
Wherein, If the bearer context information in the step 601 among the UE indication source SGSN1 is up-to-date; Be provided with in the context request message that source SGSN1 sends at target side MME1 and carry the indicating bit cell this moment, and being used to identify target side MME1 only needs source SGSN1 that bearer context information is provided.Particularly, can in context request message, increase cell: Context indication, for example the value of this cell is set is 3 to target side MME1, SGSN1 only need provide bearer context information in order to the indication source; The value that target side MME1 is provided with this cell is 5, and SGSN1 only need provide bearer context information and its ISR ability information in order to the indication source.
If the bearer context information in the step 601 among the UE indication source MME2 is up-to-date; Target side MME1 sends context request message to source SGSN1 so; Through in context request message, increasing the indicating bit cell, SGSN1 only need return to target side MME1 with its ISR ability in order to the indication source.Particularly, can in context request message, increase cell: the value that Context indication, target side MME1 are provided with this cell is 4, and SGSN1 only need provide its ISR ability information in order to the indication source.
Step 606, source SGSN1 return context response information to target side MME1;
Wherein, if in step 605, the SGSN1 of the value of the cell Context indication in context request message indication source only need return bearer context, and source SGSN1 will only return bearer context information in context response information so.If in step 605, the SGSN1 of the value of the cell Context indication in context request message indication source only need return its ISR ability, and source SGSN1 will only return its ISR ability information in context response information so.
Step 607, target side MME1 send context acknowledgement message and give source SGSN1, and whether indication ISR mechanism sets up success;
Step 608, target side MME1 send tracing section updating and accept message to UE, and whether indication ISR mechanism is set up in this message.
The foregoing description can realize that the target side Mobility Management Entity is selectively to the source request for information; And source only provides its needed information according to the indication of target side Mobility Management Entity, thereby can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.
Routing Area Update flow chart as shown in Figure 7, that the subscriber equipment that provides for the embodiment of the invention four is initiated comprises following process:
Step 701, UE send Routing Area Update message to target side SGSN2, are with oldGUTI in the message, old P-TMSI, old RAI;
Wherein, UE carries indicating bit information in the Routing Area Update request message that sends to target side SGSN2, and the bearer context of indication UE is up-to-date in which network of source.Indicating bit information has following processing method:
Mode one: UE carries the UpdateType cell in the Routing Area Update request message that sends to target side SGSN2.If foundation, modification or the deletion of bearer context have taken place in UE under source MME2; But not and source SGSN1 when mutual; Cell Update type is set to " ISR sync ", and target side SGSN2 need arrive and obtain up-to-date bearer context information among the source MME2 this moment.If the value of Updatetype is not carry Update Type cell in ISR sync or the message; Explain that then the bearer context information among source SGSN1 and the MME2 is synchronous; Target side SGSN2 can be preferentially obtains bearer context in the Mobility Management Entity of the wireless access system of same type so, promptly from source SGSN1, obtains bearer context.
The last resident system was placed on the front of the temporary mark of another one system assignment before mode two: UE will switch to the temporary mark of its distribution.For example, when UE the last resident system before switching is MME2, old GUTI places old P-TMSI front in the message cell is arranged so, shows that the bearer context of UE in source MME2 is up-to-date; When UE the last resident system before switching is SGSN1, old P-TMSI places old GUTI front in the message cell is arranged so, shows that the bearer context of UE in source SGSN1 is up-to-date.Therefore; The bearer context that the Mobility Management Entity of target side is judged in which network of source according to putting in order of above-mentioned temporary mark is up-to-date, sends the context request message that has different indication informations to the source Mobility Management Entity then and obtains different contextual informations.Wherein, old GUTI is that source network MME2 is the temporary mark that UE distributes, and old P-TMSI be source network SGSN1 is the temporary mark that UE distributes.When UE occurrence positions district upgraded, UE can bring above-mentioned two temporary marks the Mobility Management Entity of target side in the location area updating request.The Mobility Management Entity of target side utilizes the Mobility Management Entity of above-mentioned two temporary mark whereabouts sources to ask for contextual information.
Mode three: UE carries BearerUpdate Indication cell in the Routing Area Update request message that sends to target side SGSN2.The bearer context information of this cell indication UE is up-to-date in which network.For example, the bearer context of UE is up-to-date in the GERAN/UTRAN network, and then the value of this cell is set is GERAN/UTRAN to UE; The bearer context of UE is up-to-date in the E-UTRAN network, and then the value of this cell is set is E-UTRAN to UE.
Step 702, target side SGSN2 send context request message to source SGSN1 and ask for contextual information;
Wherein, If the bearer context information in the step 701 among the UE indication source SGSN1 is up-to-date; Target side SGSN2 asks for all contextual informations to source SGSN1 so, promptly comprises MM Context information and bearer context information, specifically can handle according to following mode:
1, target side SGSN2 carries Context indication cell in context request message.This cell has following value:
1) 0, return all contextual informations;
2) 1, only return safe context information;
3) 2, only return MM Context information;
4) 3, only return bearer context information;
5) 4, only return the ISR ability information.
6) 5, only return bearer context information and its ISR ability.
For this step, target side SGSN2 is set to 0 (promptly returning all contextual informations).
2, target side SGSN2 does not carry Context indication cell in context request message, and source SGSN1 is default to be thought and return all contextual informations.
If the bearer context information among the UE indication source MME2 is up-to-date, target side SGSN2 increases cell in context request message so, and being used to identify target side SGSN2 only needs source SGSN1 that MM Context or safe context are provided.For example, the target side SGSN2 value of in context request message, carrying Context indication cell and this cell being set is 1 (only returning safe context information) or 2 (only returning MM Context information).
Step 703, source SGSN1 return context response information to target side SGSN2;
Wherein, if all contextual informations of target side SGSN2 acquisition request in the context request message in step 702, source SGSN1 returns to target side SGSN2 with whole contextual informations in context response information so.If target side SGSN2 request is only obtained safe context information or only obtained the MM contextual information, source SGSN1 only returns to target side SGSN2 with MM Context information or safe context information in context response information so.
Step 704, target side SGSN2 send context acknowledgement message to source SGSN1, are used to indicate source SGSN1 ISR deexcitation;
Particularly, can in context acknowledgement message, increase cell: ISR Deactive, if its sign place value is 1, it is effective then to identify this flag bit, and ISR deexcitation is described; If its sign place value is 0, it is invalid then to identify this flag bit, and not deexcitation of ISR is described.
Step 705, target side SGSN2 send context request message to source MME2;
Wherein, If the bearer context information in the step 701 among the UE indication source MME2 is up-to-date; Be provided with in the context request message that source MME2 sends at target side SGSN2 and carry the indicating bit cell this moment, and being used to identify target side SGSN2 only needs source MME2 that bearer context is provided.Particularly, can in context request message, increase cell: the value that Context indication, target side SGSN2 are provided with this cell is 3, and MME2 only need provide bearer context in order to the indication source; The value that target side MME1 is provided with this cell is 5, and SGSN1 only need provide bearer context information and its ISR ability information in order to the indication source.
If the bearer context information in the step 701 among the UE indication source SGSN1 is up-to-date; Target side SGSN2 sends context request message to source MME2 so, only need its ISR ability be returned to target side SGSN2 through in context request message, increasing the indicating bit cell with indication source MME2.Particularly, can in context request message, increase cell: the value that Context indication, target side SGSN2 are provided with this cell is 4, and MME2 only need provide its ISR ability in order to the indication source.
Step 706, source MME2 return context response information to target side SGSN2;
Wherein, if in step 705, the MME2 of the value of the cell Context indication in context request message indication source only need return bearer context, and source MME2 will only return bearer context information in context response information so.If in step 705, the MME2 of the value of the cell Context indication in context request message indication source only need return its ISR ability, and source MME2 will only return its ISR ability information in context response information so.
Step 707, target side SGSN2 send context acknowledgement message and give source MME2, and whether indication ISR mechanism sets up success;
Step 708, target side SGSN2 send Routing Area Update and accept message to UE, and whether indication ISR mechanism is set up in this message.
In addition; Described cell Context indication, Bearer Update Indication and ISRDeactive include but not limited to the described cell that in context request message or context acknowledgement message, increases newly like above-mentioned embodiment; Can also be the transformation of existing cell in context request message or the context acknowledgement message, as long as can realize the function of indicating.
The foregoing description can realize that the target side Mobility Management Entity is selectively to the source request for information; And source only provides its needed information according to the indication of target side Mobility Management Entity, thereby can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the storage medium of an embodied on computer readable; Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
As shown in Figure 8, the structural representation of the Mobility Management Entity that provides for the embodiment of the invention five comprises: first transmitting element 820, and first receiving element 830; Can also comprise: first judging unit 810, wherein:
Described first judging unit 810 is used for indicating according to the location area updating message that receives being used to of carrying whether updating type is that the synchronous cell of ISR is judged updating type;
Described first transmitting element 820; Be used for judged result according to said first judging unit 810; Send the context request message of carrying indication information to the opposite end Mobility Management Entity; Carry MM Context information in the context response information of returning with indication opposite end Mobility Management Entity, perhaps bearer context and ISR ability information, perhaps ISR ability information; Particularly; Confirming updating types when said first judging unit 810 is that ISR is when synchronous; When effective, send the Mobility Management Entity that the context request message of carrying first indication information element is given the wireless access system of opposite end same type like cell Update Type:ISR sync flag bit; The Mobility Management Entity of the context request message of second indication information element to the dissimilar wireless access system in opposite end carried in transmission; And to confirm updating types when said first judging unit 810 be that non-ISR is when synchronous; When invalid, send the Mobility Management Entity that the context request message of carrying the 3rd indication information element is given the dissimilar wireless access system in opposite end like cell Update Type:ISR sync flag bit;
Described first receiving element 830 is used to receive the context response information that the opposite end Mobility Management Entity returns.Particularly, carry MM Context information in the context response information that the Mobility Management Entity of the wireless access system of reception opposite end same type returns; Carry bearer context and ISR ability information in the context response information that the Mobility Management Entity of the wireless access system that the reception opposite end is dissimilar returns; And carry the ISR ability information in the context response information returned of the Mobility Management Entity that receives the dissimilar wireless access system in opposite end.
In addition; Described first transmitting element 820; Also be used to send the Mobility Management Entity that the context acknowledgement message of carrying the 4th indication information element is given the wireless access system of opposite end same type, be used to indicate the Mobility Management Entity ISR deexcitation of the wireless access system of opposite end same type.
As shown in Figure 9, the structural representation of the Mobility Management Entity that provides for the embodiment of the invention six comprises: second receiving element 910, and second transmitting element 920; Wherein:
Described second receiving element 910 is used to receive the context request message that the opposite end Mobility Management Entity sends; Particularly, the context request message of carrying first indication information element of the Mobility Management Entity transmission of the wireless access system of reception opposite end same type; Receive the context request message of carrying second indication information element of the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end; And the context request message of carrying the 3rd indication information element that receives the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end;
Described second transmitting element 920 is used for the indication information according to said context request message, returns MM Context information to the opposite end Mobility Management Entity, perhaps bearer context and ISR ability information, perhaps ISR ability information.Particularly, when the flag bit of said first indication information element is effective, in the context response information that the Mobility Management Entity of the wireless access system of opposite end same type returns, carry MM Context information; When the flag bit of said second indication information element is effective, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry bearer context and ISR ability information; And when the flag bit of said the 3rd indication information element is effective, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry the ISR ability information.
In addition, described second receiving element 910 also is used to receive the context acknowledgement message that the 4th indication information element is used to indicate the ISR deexcitation of carrying that the Mobility Management Entity of the wireless access system of opposite end same type sends.
As shown in Figure 8 again, the structural representation of the Mobility Management Entity that provides for the embodiment of the invention seven comprises: first transmitting element 820, and first receiving element 830; Can also comprise: first judging unit 810, second judging unit 811, the 3rd judging unit 812; Wherein:
Described first judging unit 810, whether be used for indicating updating type according to the location area updating message that receives being used to of carrying is that the synchronous cell of ISR is judged updating type, and judged result is offered described first transmitting element 820;
Second judging unit 811, the source network that is used for carrying according to the location area updating message that receives judge that it puts in order for the temporary mark of user equipment allocation, and judged result is offered described first transmitting element 820;
The 3rd judging unit 812, the up-to-date bearer context information of the indicating bit information judges equipment that is used for carrying according to the location area updating message that receives is at the concrete network of source; And judged result offered described first transmitting element 820;
Described first transmitting element 820; Be used for sending the context request message carry indication information, carry MM Context information in the context response information of returning with indication opposite end Mobility Management Entity, perhaps bearer context and ISR ability information to the opposite end Mobility Management Entity; Perhaps ISR ability information; Perhaps safe context, perhaps bearer context information, perhaps MM Context and bearer context; Particularly; Confirming updating types when said first judging unit 810 is that ISR is when synchronous; When for example cell Update Type:ISR sync flag bit is effective, send the Mobility Management Entity that the context request message of carrying first indication information element is given the wireless access system of opposite end same type; The Mobility Management Entity of the context request message of second indication information element to the dissimilar wireless access system in opposite end carried in transmission; And to confirm updating types when said first judging unit 810 be that non-ISR is when synchronous; When invalid, send the Mobility Management Entity that the context request message of carrying the 3rd indication information element is given the dissimilar wireless access system in opposite end like cell Update Type:ISR sync flag bit; Perhaps confirming updating types when said first judging unit 810 is that ISR is when synchronous; When for example cell Update type:ISR sync flag bit is effective; Perhaps when said second judging unit 811 is judged the front of the temporary mark that temporary mark that xenogenesis access style systems distribute to UE distributes to UE in access style of the same race system on cell is arranged; The indicating bit that perhaps carries according to UE when said the 3rd judging unit 812 judges that UE is when the bearer context of source xenogenesis connecting system is up-to-date; Then send the context request message carry Context indication cell and give the Mobility Management Entity of the wireless access system of opposite end same type, and the value that this cell is set is 1 (only returning safe context information) or 2 (only returning MM Context information); Transmission is carried the context request message of Context indication cell and is given the Mobility Management Entity of the dissimilar wireless access system in opposite end, and the value that this cell is set is 3 (only returning bearer context information) or 5 (only returning bearer context information and its ISR ability information); And to confirm updating types when said first judging unit 810 be that non-ISR is when synchronous; Perhaps when said second judging unit 811 is judged the front of the temporary mark that temporary mark that access style of the same race system distributes to UE distributes to UE in xenogenesis access style system on cell is arranged; The Bearer Update Indication indicating bit that perhaps carries according to UE when said the 3rd judging unit 812 judges that UE is when the bearer context of source access style of the same race system is up-to-date; Then send the context request message carry Context indication cell and give the Mobility Management Entity of the dissimilar wireless access system in opposite end, and the value that this cell is set is 4 (only returning its ISR ability); The context request message of sending the context request message do not carry Context indication cell or carrying Context indication cell is given the Mobility Management Entity of the wireless access system of opposite end same type, and the value that this cell is set is 0 (returning all contextual informations);
Described first receiving element 830 is used to receive the context response information that the opposite end Mobility Management Entity returns.Particularly, carry MM Context information or safe context information or MM Context and bearer context in the context response information that the Mobility Management Entity of the wireless access system of reception opposite end same type returns; Carry bearer context and ISR ability information or bearer context information in the context response information that the Mobility Management Entity of the wireless access system that the reception opposite end is dissimilar returns; And carry the ISR ability information in the context response information returned of the Mobility Management Entity that receives the dissimilar wireless access system in opposite end.
In addition; Described first transmitting element 820; Also be used to send the Mobility Management Entity that the context acknowledgement message of carrying the 4th indication information element is given the wireless access system of opposite end same type, be used to indicate the Mobility Management Entity ISR deexcitation of the wireless access system of opposite end same type.
As shown in Figure 9 again, the structural representation of the Mobility Management Entity that provides for the embodiment of the invention eight comprises: second receiving element 910, and second transmitting element 920; Wherein:
Described second receiving element 910 is used to receive the context request message that the opposite end Mobility Management Entity sends; Particularly, the context request message of carrying first indication information element of the Mobility Management Entity transmission of the wireless access system of reception opposite end same type; Receive the context request message of carrying second indication information element of the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end; And the context request message of carrying the 3rd indication information element that receives the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end; What receive perhaps that the Mobility Management Entity of the wireless access system of opposite end same type sends carries Context indication cell, and this cell value is 0 or 1 or 2 context request message; What receive that the Mobility Management Entity of the dissimilar wireless access system in opposite end sends carries Context indication cell, and this cell value is 3 or 5 context request message; And the Mobility Management Entity that receives the dissimilar wireless access system in opposite end send carry the Contextindication cell, and this cell value is 4 context request message;
Described second transmitting element 920; Be used for indication information according to said context request message; Return MM Context information or safe context to the opposite end Mobility Management Entity, perhaps bearer context and ISR ability information, perhaps bearer context information; Perhaps ISR ability information, perhaps MM Context and bearer context information.Particularly, when the flag bit of said first indication information element is effective, in the context response information that the Mobility Management Entity of the wireless access system of opposite end same type returns, carry MM Context information; When the flag bit of said second indication information element is effective, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry bearer context and ISR ability information; And when the flag bit of said the 3rd indication information element is effective, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry the ISR ability information; Perhaps when said Context indication cell value is 1 or 2 or 0, in the context response information that the Mobility Management Entity of the wireless access system of opposite end same type returns, carry MM Context information or safe context or MM Context and bearer context; When said Context indication cell value is 3, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry bearer context; When said Context indication cell value is 4, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry the ISR ability information; And when said Context indication cell value is 5, in the context response information that the Mobility Management Entity of the dissimilar wireless access system in opposite end returns, carry bearer context and its ISR ability information.
In addition, described second receiving element 910 also is used to receive the context acknowledgement message that the 4th indication information element is used to indicate the ISR deexcitation of carrying that the Mobility Management Entity of the wireless access system of opposite end same type sends.
Shown in figure 10; The structural representation of the communication system that provides for the embodiment of the invention nine; Comprise: target side Mobility Management Entity 800 and source Mobility Management Entity 900; Wherein: the concrete structure of described target side Mobility Management Entity 800 and described source Mobility Management Entity 900 please respectively with reference to the detailed description of the foregoing description five, seven and embodiment six, eight, repeats no more here.
In addition, above-mentioned each embodiment also can be applied under two registration scenes.Described two registration scene is meant because in the overlapping or adjacent areas of different 3GPP inserting technology networks; UE changes connecting system at every turn, for example from GERAN/UTRAN to E-UTRAN, perhaps from E-UTRAN to GERAN/UTRAN; All need initiate more new technological process of position; Need to set up new registration procedure SGSN or MME, cause the load of HSS to increase to HSS (Home SubscriberServer, home subscriber server).For avoiding top signaling traffic load, 3GPP has also proposed two login mechanisms, and its main purpose is that UE reduces the signaling traffic load between MME or SGSN and the HSS when between different access networks, moving.Its main flow process is: UE registers in SGSN and MME, as long as UE does not leave the route district and the tracking area at its registration SGSN and MME place, tracking area or Routing Area Update that UE initiates can not cause MME or SGSN to set up new registration procedure SGSN or MME to HSS.Two login mechanisms can not reduce the load of eating dishes without rice or wine, but can reduce the load between SGSN or MME and the HSS, and simultaneously two login mechanisms do not need SGW to handle yet, and SGW only initiates paging to SGSN or MME after receiving downlink data or signaling.Under the scene of two registrations, please be achieved with reference to above-mentioned each embodiment, repeat no more here.
Therefore; This paper provides method, Mobility Management Entity and the communication system of obtaining contextual information; Can realize that the target side Mobility Management Entity is selectively to the source request for information; And source only provides its needed information according to the indication of target side Mobility Management Entity, thereby can reduce context request and the information redundancy in the context response information between target side Mobility Management Entity and the source Mobility Management Entity.
More than a kind of method, Mobility Management Entity and system that obtains contextual information provided by the present invention carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand scheme of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (12)

1. a method of obtaining contextual information is characterized in that, comprising:
The target side Mobility Management Entity receives the location area updating message that subscriber equipment sends, and carries in the said message to be used to indicate whether updating type is the synchronous cell of saving signaling ISR under the idle condition;
The target side Mobility Management Entity is according to the cell that is used in the said location area updating message indicate updating type ISR synchronous; Send the context request message of carrying indication information to the source Mobility Management Entity; Return MM Context information with indication source Mobility Management Entity; Perhaps bearer context and ISR ability information, perhaps ISR ability information;
Said target side Mobility Management Entity is according to the cell that is used in the said location area updating message indicate updating type ISR synchronous, and the step of sending the context request message that has indication information to the source Mobility Management Entity is specially:
When updating type is that ISR is when synchronous; The target side Mobility Management Entity sends the context request message of carrying first indication information element to the Mobility Management Entity of the wireless access system of source same type, in the context response information of returning, carries MM Context information with the Mobility Management Entity of the wireless access system of indication source same type; Perhaps the target side Mobility Management Entity sends the context request message of carrying second indication information element to the Mobility Management Entity of the dissimilar wireless access system of source, in the context response information of returning, carries bearer context and ISR ability information with the Mobility Management Entity of indicating the dissimilar wireless access system of source;
When updating type is that non-ISR is when synchronous; The target side Mobility Management Entity sends the context request message of carrying the 3rd indication information element to the Mobility Management Entity of the dissimilar wireless access system of source, in the context response information of returning, carries the ISR ability information with the Mobility Management Entity of indicating the dissimilar wireless access system of source.
2. a method of obtaining contextual information is characterized in that, comprising:
Target side Mobility Management Entity receiving position district updating message is carried indicating bit information in the said location area updating message, and said indicating bit information is used to indicate the concrete network of the up-to-date bearer context information of subscriber equipment at source;
After the target side Mobility Management Entity is confirmed the concrete network at the bearer context information place that subscriber equipment is up-to-date according to said indicating bit information; Send the context request message of carrying indication information according to said location area updating message to the source Mobility Management Entity again, return corresponding contextual information with indication source Mobility Management Entity;
Said indicating bit information is specially a kind of in the following situation:
Subscriber equipment carries the updating type cell in the updating message of lane place; Perhaps
The last resident system was placed on the front of the temporary mark of another one system assignment before subscriber equipment will switch to the temporary mark of its distribution; Perhaps
Subscriber equipment carries the bearer update indication information element in the updating message of lane place.
3. the method for obtaining contextual information according to claim 2; It is characterized in that; Said target side Mobility Management Entity sends the context request message carry indication information according to said location area updating message to the source Mobility Management Entity, and the step of returning corresponding contextual information with indication source Mobility Management Entity is specially a kind of in the following situation:
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns safe context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns MM Context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns bearer context information in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns bearer context information and its ISR ability in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element only returns its ISR ability in order to indication source Mobility Management Entity; Perhaps
Said target side Mobility Management Entity sends the context request message of carrying indication information element to said source Mobility Management Entity, and said indication information element returns MM Context and bearer context information in order to indication source Mobility Management Entity.
4. the method for obtaining contextual information according to claim 2; It is characterized in that; Also comprise: said target side Mobility Management Entity receives after the context response information that the source Mobility Management Entity returns; Send the context acknowledgement message of carrying the 4th indication information element to the source Mobility Management Entity, with indication source Mobility Management Entity ISR deexcitation.
5. the method for obtaining contextual information according to claim 2 is characterized in that, said lane place is specially tracking area or route district.
6. a Mobility Management Entity is characterized in that, comprising:
First judging unit, whether be used for indicating updating type according to the location area updating message that receives being used to of carrying is that the synchronous cell of ISR is judged updating type, and judged result is offered first transmitting element;
First transmitting element, being used for confirming updating type when said first judging unit is ISR when synchronous, sends the Mobility Management Entity that the context request message of carrying first indication information element is given the wireless access system of opposite end same type; The Mobility Management Entity of the context request message of second indication information element to the dissimilar wireless access system in opposite end carried in transmission; And to confirm updating type when said first judging unit be non-ISR when synchronous, sends the Mobility Management Entity that the context request message of carrying the 3rd indication information element is given the dissimilar wireless access system in opposite end;
First receiving element is used to receive the context response information that the Mobility Management Entity of the wireless access system of opposite end same type returns, and carries MM Context information in the described context response information; The context response information that the Mobility Management Entity of the wireless access system that the reception opposite end is dissimilar returns is carried bearer context and ISR ability information in the described context response information; And the context response information returned of the Mobility Management Entity that receives the dissimilar wireless access system in opposite end, carry the ISR ability information in the described context response information.
7. Mobility Management Entity according to claim 6 is characterized in that, also comprises:
Second judging unit, the source network that is used for carrying according to the location area updating message that receives judge that it puts in order for the temporary mark of user equipment allocation, and judged result is offered described first transmitting element.
8. Mobility Management Entity according to claim 6 is characterized in that, also comprises:
The 3rd judging unit, the up-to-date bearer context information of the indicating bit information judges equipment that is used for carrying according to the location area updating message that receives is at the concrete network of source; And judged result offered described first transmitting element.
9. Mobility Management Entity according to claim 6 is characterized in that,
Described first transmitting element also is used to send the Mobility Management Entity that the context acknowledgement message of carrying the 4th indication information element is given the opposite end, with the Mobility Management Entity ISR deexcitation of indication opposite end.
10. a Mobility Management Entity is characterized in that, comprising:
Second receiving element is used to receive the context request message of carrying first indication information element that the Mobility Management Entity of the wireless access system of opposite end same type sends; Receive the context request message of carrying second indication information element of the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end; And the context request message of carrying the 3rd indication information element that receives the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end;
Second transmitting element is used for the indication according to first indication information element, returns context response information to the Mobility Management Entity of the wireless access system of opposite end same type, carries MM Context information in the said context response information; According to the indication of second indication information element, return context response information to the Mobility Management Entity of the dissimilar wireless access system in opposite end, carry bearer context and ISR ability information in the said context response information; And, return context response information to the Mobility Management Entity of the dissimilar wireless access system in opposite end according to the indication of the 3rd indication information element, carry the ISR ability information in the said context response information.
11. Mobility Management Entity according to claim 10 is characterized in that, described second receiving element is used to also to receive that the opposite end Mobility Management Entity sends carries the context acknowledgement message of the 4th indication information element with indication ISR deexcitation.
12. a communication system is characterized in that, comprises target side Mobility Management Entity and source Mobility Management Entity, wherein:
Described target side Mobility Management Entity specifically comprises:
First judging unit, whether be used for indicating updating type according to the location area updating message that receives being used to of carrying is that the synchronous cell of ISR is judged updating type, and judged result is offered first transmitting element;
First transmitting element, being used for confirming updating type when said first judging unit is ISR when synchronous, sends the Mobility Management Entity that the context request message of carrying first indication information element is given the wireless access system of opposite end same type; The Mobility Management Entity of the context request message of second indication information element to the dissimilar wireless access system in opposite end carried in transmission; And to confirm updating type when said first judging unit be non-ISR when synchronous, sends the Mobility Management Entity that the context request message of carrying the 3rd indication information element is given the dissimilar wireless access system in opposite end;
First receiving element is used to receive the context response information that the Mobility Management Entity of the wireless access system of opposite end same type returns, and carries MM Context information in the described context response information; The context response information that the Mobility Management Entity of the wireless access system that the reception opposite end is dissimilar returns is carried bearer context and ISR ability information in the described context response information; And the context response information returned of the Mobility Management Entity that receives the dissimilar wireless access system in opposite end, carry the ISR ability information in the described context response information;
Described source Mobility Management Entity specifically comprises:
Second receiving element is used to receive the context request message of carrying first indication information element that the Mobility Management Entity of the wireless access system of opposite end same type sends; Receive the context request message of carrying second indication information element of the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end; And the context request message of carrying the 3rd indication information element that receives the Mobility Management Entity transmission of the dissimilar wireless access system in opposite end;
Second transmitting element is used for the indication according to first indication information element, returns context response information to the Mobility Management Entity of the wireless access system of opposite end same type, carries MM Context information in the said context response information; According to the indication of second indication information element, return context response information to the Mobility Management Entity of the dissimilar wireless access system in opposite end, carry bearer context and ISR ability information in the said context response information; And, return context response information to the Mobility Management Entity of the dissimilar wireless access system in opposite end according to the indication of the 3rd indication information element, carry the ISR ability information in the said context response information.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112312380A (en) * 2019-07-29 2021-02-02 大唐移动通信设备有限公司 Position context management method and network side equipment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101969634B (en) * 2010-06-12 2014-09-10 中兴通讯股份有限公司 Method and system for synchronizing user data
CN104684036B (en) * 2013-11-27 2019-02-26 中兴通讯股份有限公司 The standby side switching method and apparatus of Packet data service
WO2018000163A1 (en) * 2016-06-28 2018-01-04 海能达通信股份有限公司 Terminal cluster registration method, apparatus, system and core network device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1568039A (en) * 2003-06-10 2005-01-19 大唐移动通信设备有限公司 Method for implementing cell update or URA update between RNCs in mobile communication system
CN1980463A (en) * 2005-11-29 2007-06-13 华为技术有限公司 Mobile terminal text management method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1568039A (en) * 2003-06-10 2005-01-19 大唐移动通信设备有限公司 Method for implementing cell update or URA update between RNCs in mobile communication system
CN1980463A (en) * 2005-11-29 2007-06-13 华为技术有限公司 Mobile terminal text management method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112312380A (en) * 2019-07-29 2021-02-02 大唐移动通信设备有限公司 Position context management method and network side equipment
CN112312380B (en) * 2019-07-29 2022-04-01 大唐移动通信设备有限公司 Position context management method and network side equipment

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