CN1722899A - A method for storing mobile station information and method for locating mobile station - Google Patents
A method for storing mobile station information and method for locating mobile station Download PDFInfo
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- CN1722899A CN1722899A CN 200410069024 CN200410069024A CN1722899A CN 1722899 A CN1722899 A CN 1722899A CN 200410069024 CN200410069024 CN 200410069024 CN 200410069024 A CN200410069024 A CN 200410069024A CN 1722899 A CN1722899 A CN 1722899A
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Abstract
This invention discloses a method of storing the mobile station information, used in the communication system which comprises the first and second mobile exchange center. The method comprises: when the mobile station switching between offices, the first mobile exchange center will send switching requirement to the second mobile exchange center; the second exchange center will analyze the requirement, getting and storing the mobile station information. The invention also discloses a orientation method of the mobile station, characterized in that when switching between offices, the second mobile exchange center will keep the mobile station information, and the first mobile exchange center will open the orientation process, asking the second mobile exchange center to return the mobile station information; the orientation business body will return the location business message to the second mobile exchange center.
Description
Technical field
The present invention relates to the storage means of the network information and the location service in the communications field, be specifically related to a kind of method of storing mobile station information and the method for mobile position estimation.
Background technology
Along with the development of mobile communication industry, professional innovation has become the basic motive force of network and technical development.At present, voice service is still the main body of mobile communication business, and various novel mobile value-added service and mobile data services then are the powerful points of economic increase in mobile communication market.Wherein, relevant with customer location business has obtained development rapidly.
Location-based business, claim shift position business or positioning service again, be meant that the mobile network obtains the geographical location information (latitude and longitude coordinates) of portable terminal by specific location technology, offer travelling carriage, communication system or third party, and by the support of certain electronic map information, for travelling carriage provides calling or the non-calling class service relevant with its position.The professional initial U.S.'s 911 urgent calls that are applied as in shift position.Nation safety NET service can solve accidents such as social security, emergency relief rapidly and accurately by having located the position of exhaling the user.Afterwards, location service develops perfect gradually, can be applied to the service of other non-public safety, and as aspects such as vehicle scheduling, position enquiring, child's monitoring, position charging, tourist services, protocol architecture also becomes better and approaching perfection day by day.
Strengthen wireless 911 stages two agreements: defined the positioning flow behind the travelling carriage calling 911 number in " J-STD-036-AD-2 " agreement.Mobile station information is stored among the VLR (Visitor Location Register, Visited Location Registor) of MSC (Mobile Switch Center, mobile switching centre).When Mobile Origination or receipt of call, the MSC that sets up Traffic Channel at first is called AMSC (Anchor MSC, initial movable switching center).Carry out in the process in calling, if travelling carriage is moved, arrive in another MSC scope, travelling carriage can switch under the Traffic Channel of this new MSC.This new MSC is called SMSC (Serving MSC, serving mobile switching center).The switching of MSC in the calling procedure is called inter-office switchover.In location service, AMSC notice positioning service related entities is initiated the position and is obtained flow process.The location service related entities comprises MPC (mobile location centre Chinese), PDE (determining positions entity) etc., positions business in the travelling carriage communication process.Obtain in the flow process in the position, MPC or PDE are to the related data of MSC inquiry travelling carriage, the mobile station information that MSC will be kept among the VLR returns to the location service related entities, and PDE carries out position calculation and returns travelling carriage with position information such as final longitude, latitude or by the information such as map that positional information converts to.Because VLR is with mobile station identification (IMSI (InternationalMobile Subscriber Identity, international mobile subscriber is discerned) or ESN (ElectronicSerial Number, Electronic Serial Number), MIN (Mobile Identification Number, mobile identification number)) be index, make VLR directly to take out mobile station information according to mobile station identification.
Carry out in the process in the calling of prior art, mobile station information is stored among the VLR of AMSC all the time, storing mobile station information not in the VLR of SMSC, if inter-office switchover did not take place in travelling carriage in whole calling procedure, can from the VLR of AMSC, obtain mobile station information according to user ID (IMSI, ESN or MIN) so.
But there is defective in prior art, as shown in Figure 1, travelling carriage is after inter-office switchover, AMSC at first sends the inter-office switchover request to SMSC, SMSC does not store the mobile station information that carries in the interoffice handoff request, MPC or PDE were when SMSC inquires about the relevant information of travelling carriage after switching was finished, the information content that can provide is not provided among the SMSC, therefore mobile station information can not be obtained or in time be obtained to the positioning service related entities, thereby make the location failure or increase the localization process time, finally cause to obtain or can not in time obtaining the definite position (longitude and latitude, highly, information such as time) of travelling carriage.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of method at storing mobile station information is provided, and can be when making travelling carriage generation inter-office switchover at the serving mobile switching center storing mobile station information.
Another technical problem that the present invention will solve is: a kind of method of mobile position estimation is provided, and what the positioning service entity can be successful when making travelling carriage generation inter-office switchover obtains mobile station information from serving mobile switching center.
For solving the problems of the technologies described above, the invention provides a kind of method of storing mobile station information, be applied to comprise the communication system of first mobile switching centre and second mobile switching centre, it is characterized in that, comprise step:
1) described first mobile switching centre sends the inter-office switchover request to second mobile switching centre;
2) described second mobile switching centre resolves aforementioned inter-office switchover request, obtains mobile station information;
3) described second mobile switching centre preserves aforementioned mobile station information, and returns inter-office switchover request response to first mobile switching centre.
Wherein, in the described step 3), second mobile switching centre is kept at mobile station information in the Visited Location Registor.
Wherein, can also add database, in described step 3), mobile station information is saved in described database and preserve mobile station information in second mobile switching centre.
The present invention also comprises the steps:
The step that described second mobile switching centre refreshes the mobile station information of being preserved.
Call out when discharging the mobile station information of second mobile switching centre is deleted.
Described deletion mobile station information can also select following step to finish:
When 1, calling out release the mobile station information in first mobile switching centre and second mobile switching centre is deleted in the lump.
2, after second mobile switching centre preserves mobile station information successfully, with the mobile station information deletion of first mobile switching centre.
The method of mobile position estimation provided by the invention, the method realization based on above-mentioned storing mobile station information comprises step:
A. second mobile switching centre preserves mobile station information;
B. initial movable switching center starts positioning flow;
C. the positioning service entity returns mobile station information to the request of second mobile switching centre;
D. second mobile switching centre is with aforementioned mobile station information restoring to normal position Business Entity;
E. the positioning service entity returns to second mobile switching centre with location service information.
Wherein, described step D is concrete adopts following step to realize: second mobile switching centre resolves the request that aforementioned positioning service entity sends; Obtain aforementioned mobile station information from Visited Location Registor, be sent to the positioning service entity.
Described step D can also adopt following step to realize: second mobile switching centre resolves the request that aforementioned positioning service entity sends; Obtain aforementioned mobile station information from database, be sent to the positioning service entity.
Compared with prior art, the invention has the beneficial effects as follows: the process that the invention provides the related data of serving mobile switching center preservation travelling carriage when inter-office switchover, when applying the present invention to location service, position determining entity can't obtain the problem of mobile station information when having solved the prior art inter-office switchover.
Because serving mobile switching center is kept at mobile station information among the VLR, and VLR is to be the indexed data storehouse with the mobile station identification, in the request that serving mobile switching center sends, comprised mobile station identification owing to the positioning service entity simultaneously, so serving mobile switching center can return to mobile station information the positioning service entity timely.Serving mobile switching center is deleted the mobile station information of preserving where necessary, thereby has avoided owing to preserve the conflict that mobile station information causes in a plurality of mobile switching centres; In addition, for correctness and the validity that guarantees mobile station information, the mobile station related information periodic refreshing of serving mobile switching center to preserving.
Description of drawings
Fig. 1 is the workflow diagram of location service during inter-office switchover in the prior art;
Fig. 2 is the flow chart of forward direction of the present invention SMSC storing mobile station information when switching;
Fig. 3 be first SMSC of the present invention when mobile station information is deleted after to the embodiment that switches;
Fig. 4 is the embodiment of the method in conjunction with storing mobile station information of the present invention to mobile position estimation.
Embodiment
Mobile station information is stored among the MSC.When Mobile Origination or receipt of call, the MSC that sets up Traffic Channel at first is called AMSC.Carry out in the process in calling, if travelling carriage is moved, arrive in another MSC scope, travelling carriage can switch under the Traffic Channel of this new MSC.This new MSC is called SMSC.The switching of MSC in the calling procedure is called inter-office switchover.Travelling carriage switches to new MSC by current MSC and is called the forward direction switching; Travelling carriage switches to new mobile switching centre by current mobile switching centre, and the process of switching go back to original mobile switching centre again is called the back to switching.
The invention provides the scheme that mobile station information is stored in serving mobile switching center when travelling carriage generation inter-office switchover, this scheme is applicable to that above-mentioned forward direction switches, multiple inter-office switchover is switched to switching and third party in the back.
Below forward direction is switched and the back is specifically introduced to switching:
When forward direction switching for the first time takes place in travelling carriage, the method of storing mobile station information provided by the invention is, initial movable switching center sends the inter-office switchover request to serving mobile switching center, in this request, carried mobile station identification, and current area, the mobile position estimation ability, the mobile station information that air interface parameters etc. are relevant with the location; Serving mobile switching center is preserved the back with aforementioned mobile station information and is sent inter-office switchover request response to initial movable switching center; After the Incoming switching was finished, if travelling carriage generation intra-office switches, serving mobile switching center then upgraded the mobile station information of being preserved; For fear of at a plurality of mobile switching centres storing mobile station information, after calling out release, the mobile station information of serving mobile switching center is deleted.
Fig. 2 is the above-mentioned forward direction embodiment when switching, and the step of storing mobile station information specifically comprises:
Step F 1, AMSC sends FACDIR2 (Facilities Directive 2 Invoke to SMSC, the forward direction handoff request), request is set up radio channel in the SMSC zone, carried mobile station identification in this request, and current area, mobile position estimation ability, the mobile station information that air interface parameters etc. are relevant with the location;
Step F 2, SMSC resolves the described forward direction handoff request that receives, and according to mobile station identification, obtains aforementioned mobile station information from described forward direction handoff request, and is kept among the Visited Location Registor VLR;
Step F 3, SMSC sends facdir2 (forward direction switching request response) to AMSC, connects between AMSC and SMSC, and Incoming switches to be finished;
Step F 4, owing to comprise current area in the mobile station information, intra-office might take place after travelling carriage is finished inter-office switchover switch, therefore correctness and the validity in order to guarantee mobile station information is upgraded mobile station information when SMSC detects mobile station information and changes;
Step F 5, the problems such as Call Collision that cause for fear of preserve mobile station information in a plurality of MSC after calling out release, are deleted the mobile station information among the SMSC.
Among the above-mentioned steps F2, SMSC can also realize by increasing a method that is used for the database of storing mobile station information.
When the forward direction switching takes place repeatedly in travelling carriage, current SMSC sends the forward direction handoff request to new SMSC, and new SMSC resolves aforementioned forward direction handoff request, and mobile station information is preserved, storing process when preservation process and above-mentioned AMSC switch to SMSC is similar, no longer repeats; Same new SMSC can also be by increasing the mode storing mobile station information of database.Behind new SMSC storing mobile station information,,, can carry out by following two kinds of methods with the deletion of the mobile station information among the SMSC in order to guarantee only in AMSC, to preserve mobile station information:
D1: after the current SMSC storing mobile station information success, the mobile station information volume among the previous SMSC is removed;
D2: after calling out release, the mobile station information among all SMSC is deleted in the lump.
When travelling carriage the back takes place when switching, travelling carriage switches to SMSC by AMSC, when switching back AMSC by SMSC again, owing to all preserved mobile station information among SMSC and the AMSC in the calling procedure, therefore do not need to carry out again the preservation of mobile station information in the handoff procedure, for correctness and the validity that guarantees mobile station information, need the mobile station information of preserving among the AMSC be upgraded.
After the forward direction switching takes place repeatedly in travelling carriage, if carry out according to above-mentioned D2 method, previous SMSC did not delete mobile station information after current SMSC preserved mobile station information in calling procedure, during then from the previous SMSC of current SMSC switchback, previous SMSC only need refresh the mobile station information of storage according to the information among the HANDBACK2 (back is to handoff request), and does not need mobile station information to be stored again.
Fig. 3 carries out according to above-mentioned D1 method, when previous SMSC deletes mobile station information after to the embodiment that switches, concrete steps comprise:
Step B1, current SMSC sends HANDBACK2 (back is to handoff request) to previous SMSC, has carried mobile station identification in this request, and current area, mobile position estimation ability, the mobile station information that air interface parameters etc. are relevant with the location;
Step B2, previous SMSC resolve the described back that receives to handoff request, according to mobile station identification, obtain aforementioned mobile station information from described forward direction handoff request, and are kept among the Visited Location Registor VLR in this request;
Step B3, previous SMSC sends the back to switching request response to current SMSC, and Incoming switches to be finished;
Step B4, owing to comprise current area in the mobile station information, intra-office might take place after travelling carriage is finished inter-office switchover switch, therefore correctness and the validity in order to guarantee mobile station information is upgraded mobile station information when SMSC detects mobile station information and changes;
Step B5, the problems such as Call Collision that cause for fear of in a plurality of MSC, preserving mobile station information, with the deletion of the mobile station information among the SMSC, the method for deletion can be carried out by above-mentioned D1, D2.
Comprehensive above-mentioned forward direction switches and the specific embodiment of back to switching, and the method for storing mobile station information provided by the invention is that when travelling carriage generation inter-office switchover, first mobile switching centre sends the inter-office switchover request to second mobile switching centre; Described second mobile switching centre resolves aforementioned inter-office switchover request, obtains mobile station information; Described second mobile switching centre preserves aforementioned mobile station information.First mobile switching centre is above-mentioned AMSC when forward direction switching for the first time takes place, and second mobile switching centre is above-mentioned SMSC; When the forward direction switching took place repeatedly, first mobile switching centre was above-mentioned current SMSC, and second mobile switching centre is above-mentioned previous SMSC.Switch owing to intra-office may take place after inter-office switchover takes place travelling carriage again, therefore after switching each time, mobile station information is upgraded; In addition, in order to guarantee only in AMSC, to preserve mobile station information, be with the deletion of the mobile station information among the SMSC, the deletion time can be after calling out release, also can be after second mobile switching centre preserves the mobile station information success.
The present invention also provides a kind of method with above-mentioned storing mobile station information to be applied to the method for mobile position estimation, describes in detail below with reference to Fig. 4 and in conjunction with the method for the above-mentioned storing mobile station information embodiment to mobile position estimation.
After the travelling carriage generation inter-office switchover, serving mobile switching center is preserved mobile station information; If initial movable switching center detects travelling carriage occurrence positions business, then start positioning flow; The positioning service related entities is returned mobile station information to the serving mobile switching center request, has carried mobile station identification in this request; Serving mobile switching center returns to the positioning service related entities according to mobile station identification with the mobile station information of preserving; The positioning service related entities calculates location of mobile station according to mobile station related information; The positioning service related entities returns to serving mobile switching center with positioning position information (can be coordinate etc.).
Concrete steps comprise:
Step P1, serving mobile switching center is preserved mobile station information;
Step P2, whether occurrence positions business of travelling carriage is judged by initial movable switching center, if, initial movable switching center sends ISPOSREQFWD message (IntersystemPositionRequestForward to serving mobile switching center, position requests between forward office), comprise the mobile station information that mobile station identification, position requests type, mobile position estimation ability etc. are relevant with the location in this information;
Step P3, serving mobile switching center then sends ISPOSREQ (IntersystemPositionRequest to MPC, the interoffice position requests), comprise the mobile station informations relevant such as mobile station identification and mobile position estimation ability (as whether supporting GPS to locate), current area in this message with the location;
Step P4, MPC calls for the aforementioned beginning and asks and mobile station identification, serving mobile switching center sign, position requests type parametric configurations such as (as carrying out the GPS location) become GPOSREQ (GeoPositionRequest, the geographical position request) send to selected PDE, indication PDE obtains the positional information of travelling carriage;
Step P5, PDE constructs SMDPP (SMSDeliveryPointToPoint after receiving the request of aforementioned geographical position, the short message point-to-point is sent) message, mobile station identification, travelling carriage are measured required GPS positional parameter (as the gps satellite measurement parameter) send travelling carriage to, wait for that travelling carriage returns relevant metrical information and the data that are used for position calculation by serving mobile switching center, base station controller;
Step P6, travelling carriage returns smdpp (the short message point-to-point is sent response) to PDE, and GPS measurement result (to distance of 4 satellites etc.), current area (obtaining from target mobile switching centre), air interface parameters (obtaining from target mobile switching centre) are returned to PDE;
Step P7, PDE returns gposreq (geographical position request response) to MPC, and positioning result (success/failure), positioning position information are sent to MPC;
Step P8, MPC returns isposreq message (inter-office switchover request response) to serving mobile switching center, and positioning position information is returned to serving mobile switching center.
Can carry out by the method for aforementioned storing mobile station information at above-mentioned steps P1.
Serving mobile switching center in the foregoing description can replace with a SMSC, the 2nd SMSC accordingly according to actual conditions.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1, a kind of method of storing mobile station information is applied to comprise it is characterized in that the communication system of first mobile switching centre and second mobile switching centre, comprises step:
1) described first mobile switching centre sends the inter-office switchover request to second mobile switching centre;
2) described second mobile switching centre resolves aforementioned inter-office switchover request, obtains mobile station information;
3) described second mobile switching centre preserves aforementioned mobile station information, and returns inter-office switchover request response to first mobile switching centre.
2, the method for storing mobile station information according to claim 1 is characterized in that: in the described step 3), second mobile switching centre is kept at mobile station information in the Visited Location Registor.
3, the method for storing mobile station information according to claim 1 is characterized in that also comprising: add database in second mobile switching centre, mobile station information is saved in described database in described step 3).
4, according to the method for claim 1 or 2 or 3 described storing mobile station informations, it is characterized in that also comprising: described second mobile switching centre refreshes the mobile station information of being preserved.
5, the method for storing mobile station information according to claim 4 is characterized in that also comprising: call out when discharging the mobile station information of second mobile switching centre is deleted.
6, the method for storing mobile station information according to claim 4 is characterized in that also comprising: call out when discharging the mobile station information in first mobile switching centre and second mobile switching centre is deleted in the lump.
7, the method for storing mobile station information according to claim 4 is characterized in that also comprising: after second mobile switching centre preserves mobile station information successfully, with the mobile station information deletion of first mobile switching centre.
8, a kind of method of mobile position estimation adopts the method for above-mentioned storing mobile station information, it is characterized in that, comprises step:
A. second mobile switching centre preserves mobile station information;
B. initial movable switching center starts positioning flow;
C. the positioning service entity returns mobile station information to the request of second mobile switching centre;
D. second mobile switching centre is with aforementioned mobile station information restoring to normal position Business Entity;
E. the positioning service entity returns to second mobile switching centre with location service information.
9, the method for a kind of mobile position estimation according to claim 8 is characterized in that, described step D specifically comprises: second mobile switching centre resolves the request that aforementioned positioning service entity sends; Obtain aforementioned mobile station information from Visited Location Registor, be sent to the positioning service entity.
10, the method for a kind of mobile position estimation according to claim 8 is characterized in that: described step D specifically comprises: second mobile switching centre resolves the request that aforementioned positioning service entity sends; Obtain aforementioned mobile station information from database, be sent to the positioning service entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100690249A CN100421504C (en) | 2004-07-12 | 2004-07-12 | A method for storing mobile station information and method for locating mobile station |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100690249A CN100421504C (en) | 2004-07-12 | 2004-07-12 | A method for storing mobile station information and method for locating mobile station |
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| CN1722899A true CN1722899A (en) | 2006-01-18 |
| CN100421504C CN100421504C (en) | 2008-09-24 |
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| CNB2004100690249A Expired - Fee Related CN100421504C (en) | 2004-07-12 | 2004-07-12 | A method for storing mobile station information and method for locating mobile station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008113283A1 (en) * | 2007-03-19 | 2008-09-25 | Huawei Technologies Co., Ltd. | Signaling trace method and equipment |
| CN101438608B (en) * | 2006-03-03 | 2011-06-29 | 株式会社Ntt都科摩 | Base station and handover control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5839072A (en) * | 1996-03-26 | 1998-11-17 | Ericsson Inc. | Routing an incoming call to a ported mobile station within a telecommunications network |
| FI106354B (en) * | 1998-02-18 | 2001-01-15 | Nokia Networks Oy | A method for processing mobile station information |
| US6002936A (en) * | 1998-03-09 | 1999-12-14 | Ericsson Inc. | System and method for informing network of terminal-based positioning method capabilities |
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2004
- 2004-07-12 CN CNB2004100690249A patent/CN100421504C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438608B (en) * | 2006-03-03 | 2011-06-29 | 株式会社Ntt都科摩 | Base station and handover control method |
| WO2008113283A1 (en) * | 2007-03-19 | 2008-09-25 | Huawei Technologies Co., Ltd. | Signaling trace method and equipment |
| CN101272604B (en) * | 2007-03-19 | 2011-08-10 | 华为技术有限公司 | Signaling tracing method and apparatus |
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| CN100421504C (en) | 2008-09-24 |
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Granted publication date: 20080924 Termination date: 20130712 |