CN101572943A - Method, device and system for releasing user equipment (UE) context under idle state signaling reduction (ISR) by mobility management entity (MME) - Google Patents
Method, device and system for releasing user equipment (UE) context under idle state signaling reduction (ISR) by mobility management entity (MME) Download PDFInfo
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- 230000011664 signaling Effects 0.000 title claims abstract description 19
- 230000009467 reduction Effects 0.000 title abstract description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000012217 deletion Methods 0.000 claims description 82
- 230000037430 deletion Effects 0.000 claims description 82
- 230000004044 response Effects 0.000 claims description 66
- 230000008569 process Effects 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 8
- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Substances C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 claims description 3
- 230000009849 deactivation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
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Abstract
The invention discloses a method, a mobility management entity (MME), a serving GPRS support node (SGSN) and a system for releasing user equipment (UE) context under idle state signaling reduction (ISR) by the MME, which can ensure the integrity and the correctness of the signaling processing of UE activated by an ISR function when the MME carrying out Offload or the MME needs to delete the information of the UE due to other reasons so as to avoid incorrect transmission of signaling and data because the MME can not be paged to the UE so that the UE in the R8 SGSN service range can not deactivate the ISR to result in asynchronous network node state and mistakes.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of MME and discharge the contextual method of Idle state UE, Mobility Management Entity, service GPRS service node and system under the ISR situation.
Background technology
At present, 3GPP (Third Generation Partnership Project, third generation collaborative project) established MME (Mobility Management Entity among the agreement TS23.401, Mobility Management Entity) principle of reorientation proposes to exist the situation that discharges load (Off load) MME.When off load MME, for the UE of idle condition (ECM-Idle), MME paging (Paging) UE of elder generation (UserEquipment, subscriber equipment) makes it enter connection status (ECM-Connected).In addition, also support ISR (Idle State Signalling Reduction among the TS23.401 at present, idle state signaling is optimized) function, promptly UE can be simultaneously attached among R8 tradition 3G system and the EPS (Evolved Packet System, evolved packet system).Support the UE of ISR function can in R8 system and EPS, all be in ECM-Idle state (legacy system is PMM-Idle or Standby state).The situation that does not also have in addition to determine but might exist is the service node of UE in a system that the ISR function is activated, be SGSN (Serving GPRS Support Node, but in the service node MME of another system (or SGSN), be in ECM-Idle (or in the legacy system PMM-Idle or Standby state) simultaneously Serving GPRS Support Node) or be in connection status (PMM-Connected or Ready) (or in EPS, being in the ECM-Connected state) among the MME.
Existing solution is all based on the hypothesis of UE in the coverage of MME, and under the ISR situation, might be in MME UE be in the ECM-Idle state but in fact UE but be in PMM-Idle (Standby) or PMM-Connected (Ready) state in the coverage of SGSN not in the coverage of MME.Can not receive the Paging response of success when initiating paging (Paging) process of UE as MME this moment, therefore can't proceed the operation to the UE on this MME.And abandon continuing to the operation of UE and directly Off load MME will cause S-GW (Serving GW, gateway), SGSN, MME, HSS (Home Subscriber Server, home signature user server) all this UE has been preserved the information of MME in, when UE carries out mobility management process or session processing, all lead to the data of MME or signaling and mistake: UE all will occur and move to when carrying out service request (Service Request) in the MME institute service range and mistake will occur, and up signaling or data can't correctly send; When HSS inserted user data, it is unreachable that MME has not handled UE data or MME; When downlink data sent, loss of data took place owing to can not find UE in S-GW.
Summary of the invention
The embodiment of the invention provides a kind of MME to discharge the contextual method of Idle state UE, Mobility Management Entity, service GPRS service node and system under the ISR situation, can need Off load or MME to break down or because subscription data or MME strategy change at MME, when needing certain (some) UE information of deletion, UE is in Idle state and UE in MME ISR function is activated down, MME initiates the ISR deactivation process of UE, correctly deletion UE information in MME.
The embodiment of the invention provides following technical scheme:
The embodiment of the invention provides a kind of MME to discharge the contextual method of Idle state UE under the ISR situation, comprising:
Each base station eNodeB that tracking area identification list comprised that mobile management network element MME registers to user equipment (UE) sends beep-page message, and sends deletion UE request message to Serving GPRS Support Node SGSN;
When SGSN received the deletion UE request message of MME, if UE is in connection status in SGSN, then SGSN sent deletion UE response message to MME; If UE is in idle condition in SGSN, then SGSN sends beep-page message to RNC or BSS earlier, and then obtains the page response of UE feedback, sends deletion UE response message to MME again;
The described MME of SGSN notice UE is unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN;
SGSN or MME are to gateway S-GW send a request message the deletion MME that preserves in S-GW of described UE and the relevant information of eNodeB;
Deletion UE process between MME execution and the HSS, the described UE information of notice HSS is deleted in MME.
The embodiment of the invention provides a kind of Mobility Management Entity, comprising:
First transmitting element is used for sending beep-page message to each base station eNodeB that tracking area identification list comprised that user equipment (UE) is registered, and sends deletion UE request message to Serving GPRS Support Node SGSN;
First request unit, be used to receive the deletion UE response message that SGSN sends after, to gateway S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
First notification unit is used for notifying the information of the described UE of HSS to delete at MME.
The embodiment of the invention provides a kind of Serving GPRS Support Node, comprising:
Second transmitting element when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Second request unit is used for send a request message MME that the described UE of deletion preserves at S-GW and the relevant information of eNodeB to gateway S-GW;
Second notification unit is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
The embodiment of the invention provides a kind of system, comprising: Mobility Management Entity MME and Serving GPRS Support Node SGSN, wherein:
Described MME comprises:
First transmitting element is used for sending beep-page message to each base station eNodeB that tracking area identification list comprised that user equipment (UE) is registered, and sends deletion UE request message to SGSN;
First request unit, be used to receive the deletion UE response message that SGSN sends after, to gateway S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
First notification unit is used for notifying the information of the described UE of HSS to delete at MME;
Described SGSN comprises:
Second transmitting element when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Second notification unit is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
The embodiment of the invention can MME carry out Offload or as MME because other reasons need delete the information of UE the time, guarantees integrality and the correctness to the signaling process of the UE of ISR function activation.
Description of drawings
Fig. 1 is an embodiment flow chart of method provided by the invention;
Fig. 2 is another embodiment flow chart of method provided by the invention;
Fig. 3 is the example structure figure of MME provided by the invention;
Fig. 4 is the example structure figure of SGSN provided by the invention;
Fig. 5 is an example structure figure of system of the present invention.
Embodiment
The embodiment of the invention provides a kind of MME to discharge the contextual method of Idle state UE, Mobility Management Entity, service GPRS service node and system under the ISR situation, can need Off load or MME to break down at MME, when needing certain (some) UE information of deletion, UE is in Idle state and UE in MME ISR function is activated down, MME initiates the ISR deactivation process of UE, correctly deletion UE information in MME.For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings, the present invention is described in more detail.
The invention provides the embodiment that MME discharges the contextual method of Idle state UE under the ISR situation, when this process is used for MME decision deletion UE information (as, MME Off load situation), UE is in Idle state and UE in MME ISR function is activated.As shown in Figure 1, comprise following process:
Wherein, if there is not GTP-C (GPRS TunnelingProtocol Control between MME and the SGSN for this UE, GPRS Tunnel Protocol control (plane)) connection, MME includes P-TMSI (Packet Temporary Mobile Station Identity in the message that SGSN sends so, temporary transient mobile user identification divides into groups) and RAI (Routing Area Identity, Routing Area Identifier).P-TMSI is that this SGSN is the sign that UE distributes, and RAI is the sign in UE residing route district in SGSN.If the connection for the GTP-C of this UE is arranged between MME and the SGSN, MME can not carry above-mentioned two parameters in the message that SGSN sends so, and promptly these two parameters are optional.
In addition, can also carry reason (Cause) parameter in the Purge UE Request message, be used for notifying the described MME of SGSN to send the reason of this Purge UE request, for example: MME Offload etc.
Wherein, Purge UE Response message can be carried the Cause parameter, and Cause represents that with different values whether Purge UE Request message runs succeeded and reason etc. at SGSN.
The described MME of step 105, SGSN notice UE is unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id;
Wherein, described SGSN sends independent ISR deexcitation request message (ISR DeactivateRequest), and the described MME information of notice UE is invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again;
Perhaps described SGSN carries indication by the NAS signaling that sends other and comes the described MME information of parameter notice UE invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again.
After step 106, described UE received SGSN request, it was invalid according to the request message of SGSN MME information to be set, and ISR is invalid and/or be provided with and need carry out the ISR sync id, and sent response message to SGSN;
Wherein, the described UE response message that sends to SGSN can be the response message of the NAS signaling of ISR deexcitation response message (ISRDeactivate Response) or the unreachable information of MME of carrying that SGSN sent.
Wherein, if SGSN then is specially to S-GW send a request message the deletion MME that preserves in S-GW of described UE and the relevant information of eNodeB:
Described SGSN sends to S-GW and upgrades bearing request message, carries the relevant information that indication parameter request S-GW deletes MME and the eNodeB of this UE;
S-GW deletes the relevant information of MME and the eNodeB of this UE, and sends response message affirmation deletion to MME.
If MME then is specially to S-GW send a request message the deletion MME that preserves in S-GW of described UE and the relevant information of eNodeB:
After described MME receives the deletion UE response message that SGSN sends, stop paging UE and in S-GW to S-GW send a request message MME that this UE of deletion preserves and the relevant information of eNodeB;
S-GW deletes the information of MME and the eNodeB of this UE, and sends response message affirmation deletion to MME.
Described request message can be the deleting bearing request message, carries the relevant information that indication parameter notice S-GW only deletes MME and eNodeB; Described request message can also be carried the information that indication parameter notice S-GW deletes all MME of this UE and eNodeB for upgrading bearing request message.
Deletion UE process between step 109, MME execution and the HSS, the described UE information of notice HSS is deleted in MME.
As shown in Figure 2, for the invention provides another embodiment flow chart that MME discharges the contextual method of Idle state UE under the ISR situation, comprise following process:
This moment, UE became the ECM-Connected state in MME, and follow-up process will be handled by the situation of the MME offload UE that describes among the TS23.401, and processing mode can be that MME triggers switching that UE initiates or TAU process etc.;
In addition, can carry the Cause parameter in the described Cancel Purge UE Request message, in order to the reason of indication Cancel Purge, its reason can be received Paging response, MMEOffload Cancelled etc. at MME for UE.
Break down when MME needs Off load or MME, when needing certain (some) UE information of deletion, MME need send message to UE and trigger the service node that UE carries out TAU or switches to other.MME initiates the ISR deactivation process of UE in the Off Load process of the MME that the above embodiment of the present invention provides, can be implemented in and remove UE information among the MME, be activated and UE when in current MME, being the ECM-Idle state when the ISR of UE function avoiding, UE in the service range of R8 SGSN and MME can't Paging to UE, do not make mistakes thereby do not carry out asynchronous the causing of state that network node will appear in the ISR deexcitation, so that the situation that signaling and data can't correctly be transmitted takes place.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the storage medium of an embodied on computer readable, described storage medium, as: ROM/RAM, magnetic disc, CD etc.
The service node of mentioning in the foregoing description comprises MME and SGSN, below by drawings and the specific embodiments its structure is respectively described below:
As shown in Figure 3, be the structure chart of the embodiment of MME provided by the invention, described MME comprises: first transmitting element 310, first request unit 320, first notification unit 330; Wherein:
Described first transmitting element 310, each base station (eNodeB) that the tracking area identification list (TAI List) that is used for registering to UE is comprised sends beep-page message (Paging), and sends deletion UE request message (Purge UE Request) to SGSN;
Described first request unit 320, be used to receive the deletion UE response message that SGSN sends after, to S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
Described first notification unit 330 is used for notifying the information of the described UE of HSS to delete at MME.
Wherein, described first transmitting element 310 sends the UE request message that unerases to SGSN after also being used to receive the page-response message of described UE transmission.
As shown in Figure 4, be the structure chart of the embodiment of SGSN provided by the invention, described SGSN comprises: second transmitting element 410, second request unit 420, second notification unit 430; Wherein:
Described second transmitting element 410 when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Described second request unit 420 is used for send a request message MME that the described UE of deletion preserves at S-GW and the relevant information of eNodeB to S-GW;
Described second notification unit 430 is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
Wherein, described second notification unit 430 is by sending independent ISR deexcitation request message or other NAS signaling is carried indication parameter, and this MME information of indication UE is invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again.
In actual applications, MME and SGSN can be respectively independent equipment, also can close to be located in the equipment, and therefore the embodiment of the invention of a system is provided below.
As shown in Figure 5, the structure chart for an embodiment of system provided by the invention comprises: MME 300 and SGSN 400, wherein:
Described MME 300 comprises: first transmitting element 310, first request unit 320, first notification unit 330; Wherein:
Described first transmitting element 310, each base station (eNodeB) that the tracking area identification list (TAI List) that is used for registering to UE is comprised sends beep-page message (Paging), and sends deletion UE request message (Purge UE Request) to SGSN;
Described first request unit 320, be used to receive the deletion UE response message that SGSN sends after, to S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
Described first notification unit 330 is used for notifying the information of the described UE of HSS to delete at MME.
Wherein, described first transmitting element 310 sends the UE request message that unerases to SGSN after also being used to receive the page-response message of described UE transmission.
Described SGSN 400 comprises: second transmitting element 410, second request unit 420, second notification unit 430; Wherein:
Described second transmitting element 410 when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Described second request unit 420 is used for send a request message MME that the described UE of deletion preserves at S-GW and the relevant information of eNodeB to S-GW;
Described second notification unit 430 is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
Wherein, described second notification unit 430 is by sending independent ISR deexcitation request message or other NAS signaling is carried indication parameter, and this MME information of indication UE is invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again.
Need to prove that first request unit 320 of described MME 300 and second request unit 420 of described SGSN 400 can only have one to be used for carrying out the send a request message function of relevant information of MME that the described UE of deletion preserves at S-GW and eNodeB to S-GW in a system.
By above-mentioned each embodiment as can be known, MME initiates the ISR deactivation process of UE in the Off Load process of the MME that the above embodiment of the present invention provides, can be implemented in and remove UE information among the MME, to avoid needing Offload or MME to break down as MME, when needing certain (some) UE information of deletion, the ISR function of UE is activated and UE is under the ECM-Idle state in current MME, UE in the service range of R8 SGSN and MME can't Paging to UE, do not make mistakes thereby do not carry out asynchronous the causing of state that network node will appear in the ISR deexcitation, so that the situation that signaling and data can't correctly be transmitted takes place.Therefore, the embodiment of the invention can MME carry out Offload or as MME because other reasons need delete the information of UE the time, guarantees integrality and the correctness to the signaling process of the UE of ISR function activation.
More than MME provided by the present invention discharged the contextual method of Idle state UE, MME, SGSN and system are described in detail under the ISR situation, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand the solution of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (17)
1, a kind of MME discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, comprising:
Each base station eNodeB that tracking area identification list comprised that mobile management network element MME registers to user equipment (UE) sends beep-page message, and sends deletion UE request message to Serving GPRS Support Node SGSN;
When SGSN received the deletion UE request message of MME, if UE is in connection status in SGSN, then SGSN sent deletion UE response message to MME; If UE is in idle condition in SGSN, then SGSN sends beep-page message to RNC or BSS earlier, and then obtains the page response of UE feedback, sends deletion UE response message to MME again;
The described MME of SGSN notice UE is unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN;
SGSN or MME are to gateway S-GW send a request message the deletion MME that preserves in S-GW of described UE and the relevant information of eNodeB;
Deletion UE process between MME execution and the HSS, the described UE information of notice HSS is deleted in MME.
2, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, also comprises:
If UE inserts at evolved universal terrestrial radio access network EUTRAN and receives beep-page message, then UE set up with MME between Non-Access Stratum is connected and to MME transmission page-response message;
MME sends the UE request message that unerases to SGSN.
3, MME as claimed in claim 2 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, carries parameter in the described UE of the unerasing request message, in order to the unerase reason of UE request of indication.
4, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, if the connection of not controlling for the GPRS Tunnel Protocol of this UE between described MME and the SGSN, then MME comprises in the deletion UE request message that SGSN sends: described SGSN is the sign P-TMSI of UE distribution and the sign RAI in UE residing route district in described SGSN.
5, discharge the contextual method of Idle state UE under the ISR situation as claim 1 or 4 described MME, it is characterized in that, described MME carries parameter in the deletion UE request message that SGSN sends, be used for notifying the described MME of SGSN to send the reason of this deletion UE request message.
6, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, described SGSN carries parameter in the deletion UE response message that MME sends, be used for representing that whether deletion UE request message runs succeeded in SGSN and reason.
7, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, described SGSN is specially to send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB of S-GW:
Described SGSN sends to S-GW and upgrades bearing request message, carries the relevant information that indication parameter request S-GW deletes MME and the eNodeB of this UE.
8, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, described MME is specially to send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB of S-GW:
After described MME receives the deletion UE response message that SGSN sends, stop paging UE and in S-GW to S-GW send a request message MME that this UE of deletion preserves and the relevant information of eNodeB.
9, MME as claimed in claim 8 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, described request message is the deleting bearing request message, carry the relevant information that indication parameter notice S-GW only deletes MME and eNodeB, perhaps described request message is carried the information that indication parameter notice S-GW deletes all MME of this UE and eNodeB for upgrading bearing request message.
10, MME as claimed in claim 1 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that, unreachable being specially of the described SGSN notice described MME of UE:
Described SGSN sends independent ISR deexcitation request message or carries indication parameter by other NAS signaling, and this MME information of indication UE is invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again.
11, MME as claimed in claim 10 discharges the contextual method of Idle state UE under the ISR situation, it is characterized in that the response message that described UE sends to SGSN is: the response message of the NAS signaling of the unreachable information of MME of carrying that ISR deexcitation response message or SGSN are sent.
12, a kind of Mobility Management Entity is characterized in that, comprising:
First transmitting element is used for sending beep-page message to each base station eNodeB that tracking area identification list comprised that user equipment (UE) is registered, and sends deletion UE request message to Serving GPRS Support Node SGSN;
First request unit, be used to receive the deletion UE response message that SGSN sends after, to gateway S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
First notification unit is used for notifying the information of the described UE of HSS to delete at MME.
13, Mobility Management Entity as claimed in claim 12 is characterized in that, described first transmitting element sends the UE request message that unerases to SGSN after also being used to receive the page-response message of described UE transmission.
14, a kind of Serving GPRS Support Node is characterized in that, comprising:
Second transmitting element when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Second request unit is used for send a request message MME that the described UE of deletion preserves at S-GW and the relevant information of eNodeB to gateway S-GW;
Second notification unit is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
15, Mobility Management Entity as claimed in claim 14, it is characterized in that, described second notification unit is by sending independent ISR deexcitation request message or other NAS signaling is carried indication parameter, this MME information of indication UE is invalid, or ISR is invalid, or notice UE needs, and ISR is synchronous again.
16, a kind of system is characterized in that, comprising: Mobility Management Entity MME and Serving GPRS Support Node SGSN, wherein:
Described MME comprises:
First transmitting element is used for sending beep-page message to each base station eNodeB that tracking area identification list comprised that user equipment (UE) is registered, and sends deletion UE request message to SGSN;
First request unit, be used to receive the deletion UE response message that SGSN sends after, to gateway S-GW send a request message MME that the described UE of deletion preserves in S-GW and the relevant information of eNodeB;
First notification unit is used for notifying the information of the described UE of HSS to delete at MME;
Described SGSN comprises:
Second transmitting element when being used to receive the deletion UE request message of MME, if UE is in connection status in SGSN, then sends deletion UE response message to MME; If UE is in idle condition in SGSN, then send beep-page message to RNC or BSS earlier, behind the page response of acquisition UE feedback, send deletion UE response message to MME again;
Second notification unit is used to notify the described MME of UE unreachable, so that UE is provided with MME information according to the request message of SGSN is invalid, ISR is invalid and/or be provided with and need carry out the ISR sync id and send response message to SGSN.
17, system as claimed in claim 16 is characterized in that, described SGSN also comprises:
Second request unit is used for send a request message MME that the described UE of deletion preserves at S-GW and the relevant information of eNodeB to S-GW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810105302XA CN101572943B (en) | 2008-04-28 | 2008-04-28 | Method, device and system for releasing user equipment (UE) context under idle state signaling reduction (ISR) by mobility management entity (MME) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810105302XA CN101572943B (en) | 2008-04-28 | 2008-04-28 | Method, device and system for releasing user equipment (UE) context under idle state signaling reduction (ISR) by mobility management entity (MME) |
Publications (2)
| Publication Number | Publication Date |
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| CN101572943A true CN101572943A (en) | 2009-11-04 |
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