CN101686515A - Position information obtaining method and device - Google Patents

Abstract

The present invention relates to a position information obtaining method and a device. The method comprises obtaining information of the tracking area of a target cell to which a terminal switched from an access network device, and completing the switching of the terminal according to the information of the tracking area. The device comprises an obtaining module for obtaining information of the tracking area of a target cell to which a terminal switched from an access network device; an executing module for completing the switching of the terminal according to the tracking area information obtained by the obtaining module. When an UE performs a switch based on an X2 interface, a S1 interface, within-eNB or between-RAT, a mobile management device of the present invention can assist networkelements of eNB and the like to complete the switch of the UE according to the TAI of a TA to which the UE switched from an access network device, therefore, the mobile management device can correctlyjudge whether the switch is permitted or not or whether a target mobile management device switched to can be found out to execute following switch flows or not.

Description

The acquisition methods of positional information and device

Technical field

The present invention relates to the communications field, particularly a kind of acquisition methods of positional information and device.

Background technology

At network to broadband, in the process of mobile development, third generation partner program (3rdGeneration Partnership Program, abbreviation 3GPP) tissue has proposed Long Term Evolution (Long Term Evolution at mobile Access Network respectively, abbreviation LTE) scheme is evolved universal mobile communication system (UMTS) land radio access web (Evolved Universal Mobile TelecommunicationSystem Territorial Radio Access Network, be called for short E-UTRAN), and System Architecture Evolution (System Architecture Evolution has been proposed at mobile core network, abbreviation SAE) scheme is evolution block core net (Evolved Packet Core is called for short EPC).

For example include access network equipment in the network basic framework of whole LTE system: the evolved Node B (eNB) among the E-UTRAN, radio network controller among the UTRAN (Radio NetworkController, be called for short RNC) and global system for mobile communications (Global System for MobileCommunications, be called for short GSM)/GSM evolution technology (the Enhanced Datarate for GSM Evolution of data rate improved, be called for short EDGE) wireless access network (GSM EDGE Radio AccessNetwork, abbreviation GERAN) base station controller (the Base Station Controller in, be called for short BSC), and the mobile management device among the EPC for example: mobile management network element (Mobility ManagementEntity, be called for short MME) and Serving GPRS Support Node network elements such as (Serving GPRS Support Node are called for short SGSN).The SAE network be comprise in the basic framework of EPC, gateway (ServingGateway, abbreviation S-GW), grouped data network gateway (Packet Data Network Gateway, be called for short P-GW) and access network equipment is for example: evolved Node B (eNB), radio network controller (Radio Network Controller, be called for short RNC) and base station controller network elements such as (Base Station Controller are called for short BSC).ENB is connected to mobile management device among the EPC by the S1 mouth, and terminal (UserEquipment is called for short UE) can be connected with eNB by the Uu interface.Can connect by X2 interface between the eNB and realize that S1 interface and X2 interface all are logic interfacing alternately.

In E-UTRAN, owing to no longer include the differentiation of circuit domain and packet domain, can unify to adopt tracing area (Tracking Area is called for short TA) that UE is carried out location management, by distribute corresponding station location marker to UE, UE is carried out location management.Insert the UE of EPC after finishing registration under the MME by E-UTRAN, the sign of the band of position at the MME current place of UE that side reports according to eating dishes without rice or wine is tracing area information (Tracking Area Identity, be called for short TAI), giving the set in UE distribution locations zone is the set of TA, and the set of TA can be tracking zone list (TA list).

Connecting (Connected) state following time, no matter UE switches based on X2 interface and also is based on the S1 interface and switches, after switching to Target cell, the TA that finds current place as UE is not in TAlist the time, UE just can initiate tracking area update (Tracking Area Update is called for short TAU) flow process to inform the TA at the current place of MME; And change but still in TA list the time, UE can not initiate the TAU flow process as the TA at UE place.The control by eNB is switched in the minizone that UE carries out based on eNB, and disposes the mapping relations of TA and sub-district (Cell) among the eNB, thereby can be so that eNB gets access to the TA at UE place.But because the variation that this switching can not bring the S1 interface, existing switching flow does not relate to S1-AP message yet, and therefore, MME is merely able to get access to the current affiliated TAlist of UE, and can't get access to the TA at UE place.When because carrier policy, after one of them TA that is managed on the MME was under an embargo, UE was when switching based on X2 interface, and MME does not know whether the band of position at the current place of UE is forbidden TA, thereby has caused MME can't accurately judge whether to allow to switch; UE is switching based on the S1 interface and during the MME reorientation, source MME with the TAI information notification target MME of the target TA that UE switched to, does not accurately judge whether to allow to switch thereby caused target MME to make.

In realizing process of the present invention, the inventor finds: connecting under (Connected) state, UE carries out wireless access technology (Radio Access Technology, be called for short RAT) between switch the RAT that to be UE carry out from UTRAN or GERAN to E-UTRAN and switch, SGSN can't obtain the TAI information of the target TA that UE switches to, thereby has caused source SGSN can't find suitable target MME to carry out follow-up switching flow.

Summary of the invention

The embodiment of the invention provides a kind of acquisition methods and device of positional information, in UE carries out based on X2 interface, S1 interface, eNB or during the switching between RAT, mobile management device can't obtain the TAI information of the target TA that UE switches to, thereby causes mobile management device can't judge accurately whether above-mentioned switching is allowed to maybe can't find the target mobile management device that is switched to carry out follow-up switching flow.

The embodiment of the invention provides a kind of acquisition methods of positional information, comprising:

Obtain the tracing area information of the Target cell place tracing area that terminal switches to from access network equipment;

Finish the switching of described terminal according to described tracing area information.

The embodiment of the invention also provides a kind of deriving means of positional information, comprising:

Acquisition module is used for obtaining from access network equipment the tracing area information of the Target cell place tracing area that terminal switches to;

Executive Module is used for finishing according to the accessed tracing area information of described acquisition module the switching of described terminal.

As shown from the above technical solution, in UE carries out based on X2 interface, S1 interface, eNB or during the switching between RAT, mobile management device can be finished the switching of UE according to the network elements such as TAI information assists eNB of the target TA that the UE that gets access to from access network equipment switched in the embodiment of the invention, thereby makes mobile management device can judge accurately whether above-mentioned switching is allowed to or can accurately find the target mobile management device that is switched to carry out follow-up switching flow.

Below in conjunction with accompanying drawing specific embodiments of the invention are described in further detail.

Description of drawings

The schematic flow sheet of the acquisition methods of the positional information that Fig. 1 provides for the embodiment of the invention one;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 2 provides for the embodiment of the invention two;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 3 provides for the embodiment of the invention three;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 4 provides for the embodiment of the invention four;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 5 provides for the embodiment of the invention five;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 6 provides for the embodiment of the invention six;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 7 provides for the embodiment of the invention seven;

The schematic flow sheet of the acquisition methods of the positional information that Fig. 8 provides for the embodiment of the invention eight;

The structural representation of the deriving means of the positional information that Fig. 9 provides for the embodiment of the invention nine.

Embodiment

The schematic flow sheet of the acquisition methods of the positional information that Fig. 1 provides for the embodiment of the invention one, as shown in Figure 1, present embodiment can may further comprise the steps:

Step 101, mobile management device are obtained the tracing area information of the Target cell place tracing area that terminal switches to from access network equipment;

Step 102, mobile management device are finished the switching of described terminal according to described tracing area information.

Access network equipment in the present embodiment can be eNB, also can be RNC, can also be BSC; Mobile management device can be MME, can also be SGSN.Present embodiment can be applicable to the scene that inserts EPC by any wireless access network, and when wireless access network was E-UTRAN for the LTE network, access network equipment was eNB, and mobile management device then is MME; When wireless access network is a 3G network for example during UTRAN, access network equipment is RNC, and mobile management device then is SGSN; When wireless access network is a 2G network for example during GSM EDGE Radio Access Network (GSM EDGE Radio Access Network, be called for short GERAN), access network equipment is BSC, and mobile management device then is SGSN.Switching in the present embodiment can for UE carry out based in X2 interface, S1 interface, the eNB or the switching between RAT, mobile management device can be finished the switching of UE according to the network elements such as TAI information assists eNB/RNC/BSC of the target TA that the UE that gets access to switched to, thereby makes mobile management device can judge accurately whether above-mentioned switching is allowed to or can accurately find the target mobile management device that is switched to carry out follow-up switching flow.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 2 provides for the embodiment of the invention two is applicable to the scene of switching based on X2 interface, and as shown in Figure 2, present embodiment can may further comprise the steps:

Step 201, source eNB judgement need carrying out X2 interface switch, and send handoff request (Handover Request) message to target eNB;

If step 202 target eNB can be distributed corresponding resource for this switches, then return handoff response (Handover Request Acknowledge) message, carry UE in this Handover RequestAcknowledge message and switch to the required configuration parameter of Target cell (Cell) to source eNB;

After step 203, source eNB receive Handover Request Acknowledge message, send the RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message, UE switches with notice;

Step 204, UE successful switch send RRC to target eNB and connect to reshuffle and finish (RRC Connection Reconfiguration Complete) message, with notice eNB handover success behind Target cell;

After step 205, target eNB receive RRC Connection Reconfiguration Complete message, to MME transmit path handoff request (Path Switch Request) message, carry out the path with request and switch, carry the TAI information of the Target cell place TA that UE switches in this Path Switch Request message;

After step 206, MME receive Path Switch Request, whether the TA that judges whether to allow UE to switch promptly to judge the Target cell place that UE switches to is in effective TA of TA List (TA is not under an embargo), if allow UE to switch, then to target eNB return path Handover Request Acknowledge (Path SwitchRequest Acknowledge) message, with notification target eNB path handover success.

So far, handoff procedure completes successfully.Further, after the handover success, MME can store the TAI information of the current affiliated subdistrict of UE place TA.

In the present embodiment, the TAI information of the UE affiliated subdistrict place TA that is increased in target eNB in switching by X2 interface and the interface message between the MME (being S1-AP) the Path Switch Request message, this information can also can increase new S1 interface message and implement by increasing the enforcement of corresponding information element in the S1 interface message now.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 3 provides for the embodiment of the invention three is applicable to the scene of switching based on the S1 interface, and as shown in Figure 3, present embodiment can may further comprise the steps:

Step 301, source eNB judgement need carrying out S1 interface switch, send switching demand (Handover Required) message to source MME, carry the TAI information (Selected TAI Information) of the Target cell place TA that UE switches in this Handover Required message;

After step 302, source MME receive Handover Required message, according to the TAI information in this HandoverRequired message, before the target MME of correspondence sends, change re-positioning request (Forward Relocation Request) message, carry this TAI information in this Forward Relocation Request message;

After step 303, target MME receive Forward Relocation Request message, whether the TA that judges whether to allow UE to switch promptly to judge UE the Target cell place that switched to is in effective TA (TA is not under an embargo), if allow UE to switch, then notification target eNB distributes corresponding resource for this switches; If do not allow UE to switch, then can return failed message, with the notice handoff failure to source MME;

If step 304 target eNB success Resources allocation, then target MME changes relocation response (Forward Relocation Response) message before source MME sends;

After step 305, source MME receive Forward Relocation Response message, send switching command (Handover Command) message to source eNB;

After step 306, source eNB receive Handover Command message, send the RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message, UE switches with notice;

Step 307, UE successful switch send RRC to target eNB and connect to reshuffle and finish (RRC Connection Reconfiguration Complete) message, with notice eNB handover success behind Target cell;

After step 308, target eNB receive RRC Connection Reconfiguration Complete message, send switching notice (Handover Notify) message to target MME, with notification target MME handover success.

So far, handoff procedure completes successfully.Further, after the handover success, MME can store the TAI information of the current affiliated subdistrict of UE place TA.

In the present embodiment, the TAI information of the UE affiliated subdistrict place TA that is increased in source MME in switching by the S1 interface and the interface message between the target MME (S10 message) the Forward Relocation Request message, this information can also can increase new S10 interface message and implement by increasing the enforcement of corresponding information element in the S10 interface message now.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 4 provides for the embodiment of the invention four is applicable to that based on the scene of switching in the eNB as shown in Figure 4, present embodiment can may further comprise the steps:

Switch in step 401, eNB judgement need the carrying out eNB, send the RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message, UE switches with notice;

Step 402, UE successful switch send RRC to eNB and connect to reshuffle and finish (RRC Connection Reconfiguration Complete) message, with notice eNB handover success behind Target cell;

After step 403, target eNB receive RRC Connection Reconfiguration Complete message, send switching notice (Handover Notify) message to MME, with notification target MME handover success, carry the TAI information of the Target cell place TA that UE switches in this Handover Notify message.

So far, handoff procedure completes successfully in the eNB.

Alternatively, eNB can just can send the Handover Notify message that carries this TAI information in this step just when the Target cell place TA that UE switched to changes.

In the present embodiment, after switching was finished, eNB sent S1 interface message HandoverNotify message to MME, and the TAI information of the current affiliated subdistrict of UE place TA is notified to MME.Whether affiliated subdistrict place TA changed to determine whether send described message to MME before and after eNB can switch based on UE; Also can always send S1 interface message Handover Notify message, the TA at the current place of notice UE to MME.Realize that this function can use described S1 interface message, also can other S1 interface message.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 5 provides for the embodiment of the invention five is applicable to the scene of eNB config update (eNB configuration Update), and as shown in Figure 5, present embodiment can may further comprise the steps:

Step 501, eNB send eNB config update (eNB Configuration Update) message to MME, with the up-to-date configuration information of notice MME oneself, carry all E-UTRAN sub-district overall identification under each TA that supports (E-UTRAN CellGlobal Identifier is called for short ECGI) information in this eNB Configuration Update message;

After step 502, MME receive eNB Configuration Update message, upgrade the configuration information of oneself, this configuration information can comprise the corresponding relation of all ECGI information and TA and ECGI under each TA that supports of storage, and returns eNB config update affirmation (eNB ConfigurationUpdate Acknowledge) message to eNB.

Based on present embodiment, when UE carried out the X2 interface switching, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 205 of the embodiment of the invention two, in the S1 interface message Path Switch Request message, then can not need to carry TAI information; When UE carries out the switching of S1 interface, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 302 in the embodiment of the invention three, in the S10 interface message Forward Relocation Request message, then can not need to carry TAI information; When switching in UE carries out eNB, MME just can know corresponding TA by the ECGI information that eNB reports, and then in the step 403 of the embodiment of the invention four, in the S1 interface message Handover Notify message, then can not need to carry TAI information.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 6 provides for the embodiment of the invention six is applicable to that the S1 interface sets up the scene of (S1 Setup), and as shown in Figure 5, present embodiment can may further comprise the steps:

Step 601, eNB send the S1 interface to MME and set up request (S1 Setup Request) message, with the up-to-date configuration information of notice MME oneself, carry all ECGI information under each TA that supports in this S1 Setup Request message;

After step 602, MME receive S1 Setup Request message, upgrade the configuration information of oneself, this configuration information can comprise the corresponding relation of all ECGI information and TA and ECGI under each TA that supports of storage, and returns the S1 interface to eNB and set up and respond (S1 Setup Response) message.

Based on present embodiment, when UE carried out the X2 interface switching, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 205 of the embodiment of the invention two, in the S1 interface message Path Switch Request message, then can not need to carry TAI information.When UE carries out the switching of S1 interface, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 302 in the embodiment of the invention three, in the S10 interface message Forward Relocation Request message, then can not need to carry TAI information; When switching in UE carries out eNB, MME just can know corresponding TA by the ECGI information that eNB reports, and then in the step 403 of the embodiment of the invention four, in the S1 interface message Handover Notify message, then can not need to carry TAI information.

Among above-mentioned two embodiment, increase the ECGI information under the TA that eNB supported in (being S1-AP message) eNB Configuration Update message of the message of interface between eNB and MME or the S1 Setup Request message, MME preserves the corresponding relation of ECGI information and TAI.MME just can accurately know the selected TA of UE by the ECGI information that eNB (may be source eNB, also may be target eNB) reports.This information can also can increase new S1 interface message and implement by increasing the enforcement of corresponding information element in the S1 interface message now.

Replacedly, in the acquisition methods of the positional information that the invention described above embodiment two, three, four, five and six provides, can also be included in the step of the corresponding relation of the TAI information of the pre-configured TA that manages on the MME and ECGI information.Based on this step, when UE carried out the X2 interface switching, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 205 of the embodiment of the invention two, in the S1 interface message Path Switch Request message, then can not need to carry TAI information; When UE carries out the switching of S1 interface, MME just can know corresponding TA by the ECGI information that eNB reports, then in the step 302 in the embodiment of the invention three, in the S10 interface message ForwardRelocation Request message, then can not need to carry TAI information; When switching in UE carries out eNB, MME just can know corresponding TA by the ECGI information that eNB reports, and then in the step 403 of the embodiment of the invention four, in the S1 interface message Handover Notify message, then can not need to carry TAI information.

By UE when switching, to the TAI information of MME notice place, the sub-district TA that UE switched to or the TAI information of the current affiliated subdistrict of UE place TA, thereby make MME to know exactly to be in place, sub-district TA that UE switched to or current affiliated subdistrict place TA under connection (Connected) state.When because carrier policy, after one of them TA that is managed on the MME is under an embargo, UE is when switching based on X2 interface or S1 interface, MME can know accurately that UE switches to or whether the current affiliated affiliated TA of Target cell is forbidden TA, thereby can accurately judge whether to allow to switch.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 7 provides for the embodiment of the invention seven is applicable to the scene of switching from UTRAN to E-UTRAN, as shown in Figure 7, present embodiment can may further comprise the steps:

After step 701, source RNC initiate to switch, send reorientation demand (RelocationRequired) message to source SGSN, carry TAI (selected TAI) information of independent selection in this Relocation Required message or for example increase TAI (selected TAI) information element of selecting in the target eNB sign (target eNB ID) in existing parameter;

After step 702, source SGSN receive Relocation Required message, change re-positioning request (Forward Relocation Request) message according to the selected TAI information in this RelocationRequired message before the target MME of correspondence sends, switching to E-UTRAN with request from UTRAN is that the request target side is distributed corresponding resource for this switches;

After step 703, target MME receive Forward Relocation Request message, then send handoff request (Handover Request) message, distribute corresponding resource notification target eNB to switch Resources allocation for this switches for this with notification target eNB to target eNB;

If step 704 target eNB success Resources allocation is then returned Handover Request Acknowledge (Handover Request Acknowledge) message to target MME;

After step 705, target MME receive Handover Request Acknowledge message, before sending, changes source SGSN relocation response (Forward Relocation Response) message;

After step 706, source SGSN receive Forward Relocation Response message, send reorientation order (Relocation Command) message to source RNC;

After step 707, source RNC receive Relocation Command message, send to UE and to switch UTRAN order (Handover From UTRAN Command) message, UE switches with notice;

Step 708, UE successful switch send RRC to target eNB and connect to reshuffle and finish (RRC Connection Reconfiguration Complete) message, with notice eNB handover success behind Target cell;

After step 709, target eNB receive RRC Connection Reconfiguration Complete message, send switching notice (Handover Notify) message to target MME, with notification target MME handover success.

The schematic flow sheet of the acquisition methods of the positional information that Fig. 8 provides for the embodiment of the invention eight is applicable to the scene of switching from GERAN to E-UTRAN, as shown in Figure 8, present embodiment can may further comprise the steps:

After step 801, source BSC initiate to switch, send packet switching (PS) switching demand (PS Handover Required) message to source SGSN, carry the TAI information (Selected TAI Information) of independent selection in this PS Handover Required message or for example increase TAI information (the Selected TAI Information) element of selecting in the target eNB sign (target eNB ID) in existing parameter;

After step 802, source SGSN receive PS Handover Required message, change re-positioning request (Forward Relocation Request) message according to the selected TAI information in this PSHandover Required message before the target MME of correspondence sends, switching to E-UTRAN with request from UTRAN is that the request target side is distributed corresponding resource for this switches;

After step 803, target MME receive Forward Relocation Request message, then send handoff request (Handover Request) message, distribute corresponding resource for this switches with notification target eNB to target eNB;

If step 804 target eNB success Resources allocation is then returned Handover Request Acknowledge (Handover Request Acknowledge) message to target MME;

After step 805, target MME receive Handover Request Acknowledge message, before sending, changes source SGSN relocation response (Forward Relocation Response) message;

After step 806, source SGSN receive Forward Relocation Response message, send PS to source BSC and switch requirement validation (PS Handover Required Acknowledge) message;

After step 807, source BSC receive PS Handover Required Acknowledge message, send PS switching command (PS Handover Command) message to UE, UE switches with notice;

Step 808, UE successful switch send RRC to target eNB and connect to reshuffle and finish (RRC Connection Reconfiguration Complete) message, with notice eNB handover success behind Target cell;

After step 809, target eNB receive RRC Connection Reconfiguration Complete message, send switching notice (Handover Notify) message to target MME, with notification target MME handover success.

Be the smooth execution that guarantees that UE switches from UTRAN to E-UTRAN and from GERAN to E-UTRAN, the embodiment of the invention seven and embodiment eight increase element S elected TAI Information or increase independent information element Selected TAI Information in message in the existing parametric t arget eNB ID of RNC/BSC in the interface message between the SGSN, SGSN just can send to target MME with handoff request related news (S3 interface message) according to SelectedTAI Information like this, carry out the switching of E-URTAN, if handover success, target MME can be stored the TAI information of UE affiliated subdistrict place TA.

When UTRAN or GERAN system switch to the E-UTRAN system, between source BSC and source SGSN, increase information Selected TAI Information at UE between interface message, source RNC and the source SGSN in the interface message; Between source SGSN and target MME, increase information Selected TAI Information in the interface message.This information can also can increase new interface message and implement by increasing the enforcement of corresponding information element in the interface message now.When UTRAN or GERAN system switch to the E-UTRAN system, between source BSC and source SGSN, increase element S elected TAIInformation at UE between interface message, source RNC and the source SGSN among the existing parametric t arget eNB ID of interface message; Between source SGSN and target MME, increase element information SelectedTAI Information in the interface message; Behind handover success, target MME preserves the TA under the UE.This information can also can increase new interface message and implement by increasing the enforcement of corresponding information element in the interface message now.

The structural representation of the deriving means of the positional information that Fig. 9 provides for the embodiment of the invention nine, as shown in Figure 9, present embodiment can comprise acquisition module 91 and Executive Module 92.Acquisition module 91 obtains the tracing area information of the Target cell place tracing area that terminal switches to from access network equipment, and Executive Module 92 is finished the switching of terminal according to acquisition module 91 accessed network elements such as tracing area information assists access network equipment.

The deriving means of the positional information that the embodiment of the invention nine provides can be thought mobile management device, can be MME, can also be SGSN; Access network equipment in the present embodiment can be eNB, also can be RNC, can also be BSC.Present embodiment can be applicable to the scene that inserts EPC by any wireless access network, and when wireless access network was E-UTRAN for the LTE network, access network equipment was eNB, and mobile management device then is MME; When wireless access network is a 3G network for example during UTRAN, access network equipment is RNC, and mobile management device then is SGSN; When wireless access network is a 2G network for example during GSM EDGE Radio Access Network (GSM EDGE Radio Access Network, be called for short GERAN), access network equipment is BSC, and mobile management device then is SGSN.The switching that switching in the present embodiment can be carried out for UE based on X2 interface, S1 interface, eNB or MME, the network elements such as TAI information assists eNB/RNC/BSC of the target TA that Executive Module can be switched to according to the accessed UE of acquisition module are finished the switching of UE, thereby make mobile management device can judge accurately whether above-mentioned switching is allowed to or can accurately find the target mobile management device that is switched to carry out follow-up switching flow.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (10)

1, a kind of acquisition methods of positional information is characterized in that, comprising:

Obtain the tracing area information of the Target cell place tracing area that terminal switches to from access network equipment;

Finish the switching of described terminal according to described tracing area information.

2, method according to claim 1, it is characterized in that, described switch to based on X2 interface switch, based on the S1 interface switch, based on switching in the evolved Node B eNB or switching to evolved universal mobile communication system land radio access web E-UTRAN from the GSM evolution technology wireless access network GERAN of universal mobile telecommunications system land radio access web UTRAN or global system for mobile communications/raising data rate.

3, method according to claim 2, it is characterized in that, described switching to based on X2 interface switched, and the described tracing area information of obtaining the Target cell place tracing area that terminal switches to is specially: the tracing area information of obtaining the Target cell place tracing area that terminal switches to by the S1-AP interface message.

4, method according to claim 2, it is characterized in that, described switching to based on the S1 interface switched, and the described tracing area information of obtaining the Target cell place tracing area that terminal switches to is specially: the tracing area information of obtaining the Target cell place tracing area that terminal switches to by the S10 interface message.

5, method according to claim 2, it is characterized in that, described switching to based on switching in the eNB, the described tracing area information of obtaining the Target cell place tracing area that terminal switches to is specially: the tracing area information of obtaining the Target cell place tracing area that terminal switches to by the S1 interface message.

6, method according to claim 2, it is characterized in that, described switching to from UTRAN or GERAN switched to E-UTRAN, and the described tracing area information of obtaining the Target cell place tracing area that terminal switches to is specially: the tracing area information of obtaining the Target cell place tracing area that terminal switches to by the S3 interface message.

According to the described method of the arbitrary claim of claim 3 to 6, it is characterized in that 7, described tracing area information independently is a parameter, or described tracing area information is an element in the existing parameter in the message.

8, method according to claim 1 is characterized in that, the described tracing area information of obtaining the Target cell place tracing area that terminal switches to specifically comprises:

Obtain the ECGI information under the tracing area that eNB supports;

Go out the tracing area information of the Target cell place tracing area that terminal switches to according to described E-UTRAN sub-district overall identification ECGI information matches.

9, method according to claim 8, it is characterized in that, also comprise: the ECGI information under the tracing area that pre-configured described eNB supported and the mapping relations of tracing area information, for the tracing area information that goes out the Target cell place tracing area that terminal switches to according to described ECGI information matches.

10, a kind of deriving means of positional information is characterized in that, comprising:

Acquisition module is used for obtaining from access network equipment the tracing area information of the Target cell place tracing area that terminal switches to;

Executive Module is used for finishing according to the accessed tracing area information of described acquisition module the switching of described terminal.

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