CN1269370C - Positioning method of mobile communication system - Google Patents
Positioning method of mobile communication system Download PDFInfo
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- CN1269370C CN1269370C CN 03147016 CN03147016A CN1269370C CN 1269370 C CN1269370 C CN 1269370C CN 03147016 CN03147016 CN 03147016 CN 03147016 A CN03147016 A CN 03147016A CN 1269370 C CN1269370 C CN 1269370C
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Abstract
The present invention discloses a positioning method of a mobile communication system. The method comprises that a mobile positioning center receives a positioning request; the mobile positioning center transmits request information to a home location register of an account opening place of a mobile terminal which requests for a positioning service; the request message contains a request for a mobile exchange center address where the mobile terminal roaming is positioned; the home location register returns the information containing the mobile exchange center address mobile where the mobile terminal roaming is positioned to the mobile positioning center; the mobile positioning center selects and transmits the positioning request to a corresponding positioning entity; the location information between the positioning entity and the mobile terminal interacts, and the location information of the mobile terminal is calculated; the positioning entity transmits the location information of the mobile terminal to the mobile positioning center. The technical scheme of the present invention causes the current location of the mobile terminal to be in a covering range of GPS satellite data of the selected positioning entity. Thus, positioning precision and success ratio are greatly enhanced.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to the realization of positioning service.
Background technology
Positioning service refers to the position that obtains portable terminal/portable terminal (Mobile station, i.e. MS) in mobile communcations system by wireless location technology, and provides corresponding service based on the position of portable terminal.The main application of positioning service comprises: public safety urgent call, network optimization charging, value-added service or the like.
Fig. 1 has described the network structure based on the navigation system in the mobile communcations system on portable terminal plane.Wherein, navigation system comprises traditional network entity and the entity that increases newly.The former mainly comprises portable terminal, mobile switching centre and attaching position register, and the latter mainly comprises mobile positioning center, position determining entity and location services clients machine etc.
Portable terminal is the mobile terminal communication equipment with positioning service function, and major function provides the relevant metrical information in location of this portable terminal.Simultaneously, the application of finishing the part positioning service realizes.
Mobile positioning center is the kernel entity that positioning service realizes.Major function is the control position fixing process, with each entity interaction, and storage and the positional information etc. of portable terminal is provided.
The function of position determining entity mainly is that the information that portable terminal is delivered to network side is handled, thereby calculates the positional information of portable terminal.
The location services clients machine is a service application entity.It obtains the positional information of portable terminal by mobile positioning center, provides different location services according to location information of mobile terminal again.This entity is in charge of by positioning service provider.
In above-mentioned fixer network based on the portable terminal plane, portable terminal, mobile positioning center, position determining entity and location services clients machine are to connect by TCP/IP (Transfer Control Protocol/InternetProtocol, that is TCP) network.Certainly, portable terminal, mobile positioning center, position determining entity and location services clients machine also can be connected by existing circuit-switched network.Communication between mobile positioning center and mobile switching centre, the attaching position register is undertaken by the Signaling System Number 7 net.During physics realization, two or more entities in the network configuration can be merged into a physical entity.
In CDMA (Code Division Multiple Access, i.e. code division multiple access) wireless network, location services system can exist a plurality of mobile positioning centers and a plurality of position determining entity in network.When realizing positioning service, in the time of especially will calculating the positional information of portable terminal, will face in the selection of position determining entity the existing method local position determining entity of general direct selection or select position determining entity to calculate the way of the positional information of portable terminal at random.Described local position determining entity is that position determining entity and the mobile positioning center of portable terminal under the ground of opening an account is generally one-to-one relationship.Existing localization method can be with reference to CHINAUNICOM's " plane relevant device specification requirement of 800MHz CDMA digital mobile cellular telecommunication net positioning service portable terminal " and CHINAUNICOM's " specification requirement of 800MHz CDMA digital mobile cellular telecommunication net MAP "
The shortcoming of existing way is: the mobile communication base station data that generally need in the position determining entity to preserve the actual location of portable terminal can accurately be located portable terminal, and when using local position determining entity, portable terminal has roamed into the other places probably, may do not have nonlocal base station in the local position determining entity this moment, especially roam on-site base station data, thereby cause the location failure.The GPS of position determining entity (GlobalPositioning System, be GPS (Global Position System)) satellite with reference to the receiving equipment coverage generally about 600 kilometers, if way according to above-mentioned traditional selection position determining entity, the position that might cause the current actual place of portable terminal not at the gps satellite of selecteed local position determining entity with reference to the receiving equipment coverage, and cause that positioning accuracy reduces, even location failure.And select the method for local position determining entity, bigger to the network design difficulty, network configuration is dumb, and many cover mobile positioning centers and position determining entity need be set in network, and cost is higher.The selection mode of hence one can see that existing position determining entity has its imperfection part.
Summary of the invention
Thereby technical problem to be solved by this invention is to select imperfection to cause the technical problem that positioning accuracy reduces in order to overcome when realizing the location in the existing mobile communication navigation system position determining entity.
The technical scheme that realizes technical problem to be solved by this invention and take is summarized as follows:
A kind of localization method of mobile communcations system is provided, may further comprise the steps:
(1) mobile positioning center receives Location Request;
(2) mobile positioning center sends a request message to the ground attaching position register of opening an account of the portable terminal of request positioning service, comprises the request to the on-site mobile switching centre of described mobile terminal roaming address in the described request message;
(3) described attaching position register returns the message that contains the on-site mobile switching centre of described mobile terminal roaming address to mobile positioning center;
(4) mobile positioning center is selected to send Location Request to corresponding positioning entity;
(5) position interacting message between described position determining entity and the portable terminal, calculate the positional information of described portable terminal;
(6) position determining entity sends the positional information of described portable terminal to mobile positioning center.Further, described request message is the short message solicitation message.
Adopt technical solution of the present invention, by in position fixing process, selecting corresponding positioning entity, can guarantee that position determining entity provides the base station information of portable terminal current location base station, make the current position of portable terminal in the coverage of selected position determining entity gps satellite data.Make locating accuracy and success rate strengthen greatly.Attaching position register by the ground of opening an account to portable terminal sends the request message that comprises the short message solicitation message simultaneously, can obtain the address of the on-site mobile switching centre of mobile terminal roaming on the one hand, thereby improves positioning accuracy and success rate; Also can increase on the other hand the restriction of user's positioned area, limited subscriber positions in some zone, increases professional flexibility.Further, if the flow process of locating is then directly ended in portable terminal arrearage.
Description of drawings
Fig. 1 is the schematic network structure of the positioning service based on the portable terminal plane of the present invention;
Fig. 2 shows the schematic flow sheet of localization method of the present invention;
Fig. 3 shows the positioning flow schematic diagram of a kind of execution mode of localization method of the present invention;
Fig. 4 shows the positioning flow schematic diagram of the another kind of execution mode of localization method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, illustrate the specific embodiment of the present invention.
In the present invention, the localization method of the mobile communcations system that is provided with reference to accompanying drawing 2, mainly comprises the step that following order is carried out:
Mobile positioning center receives Location Request;
Mobile positioning center sends a request message to the ground attaching position register of opening an account of the portable terminal of request positioning service, comprises the request to the on-site mobile switching centre of described mobile terminal roaming address in the described request message;
Described attaching position register returns the message that contains the on-site mobile switching centre of described mobile terminal roaming address to mobile positioning center;
Mobile positioning center is selected to send Location Request to corresponding positioning entity;
Position interacting message between described position determining entity and the portable terminal, calculate the positional information of described portable terminal;
(1) position determining entity sends the step of the positional information of described portable terminal to mobile positioning center.
First kind of embodiment of the present invention at first is described.According to Fig. 3, show positioning flow of initiatively initiating request for location services of the present invention by portable terminal, this flow process is based on that WAP (WirelessApplication Protocol, i.e. WAP (wireless application protocol)) uses.Its concrete implementation step is as follows:
Execution in step 2.1, portable terminal inserts the location services clients machine by the WAP mode, sends request for location services;
Execution in step 2.2, the location services clients machine sends Location Request to mobile positioning center;
Execution in step 2.3, mobile positioning center sends request message to the address of the on-site mobile switching centre of mobile terminal roaming to the open an account attaching position register on ground of portable terminal, in the present embodiment, the attaching position register that mobile positioning center is opened an account to portable terminal sends SMSREQ (ShortMessageService Request, i.e. short message solicitation message) message;
Execution in step 2.4, described attaching position register returns SMSREQ message, carries parameters such as short message address (being the address of the on-site mobile switching centre of mobile terminal roaming), the negative reason of short message access in the SMSREQ message.Also can increase in this step simultaneously by the short message address in the SMSREQ return messages and judge that whether portable terminal is in the packet data network coverage, or increase the judgement of portable terminal positioned area restriction etc., also can insert by short message negates situations such as cause parameter judges whether portable terminal shuts down, arrearage, can be according to above-mentioned different judged result, whether decision takes to proceed positioning service, for example, if the flow process of locating is then directly ended in the portable terminal arrearage.
Execution in step 2.5, the location services clients machine returns request-reply by WAP;
Execution in step 2.6, mobile positioning center sends authentication message to portable terminal/location services clients machine data storehouse, checks whether the portable terminal and the location services clients machine of initiating the location are authorized to;
Execution in step 2.7, authenticating result is returned to mobile positioning center in portable terminal/location services clients machine data storehouse.Wherein authenticating result should comprise following information: whether location services clients machine and portable terminal are signatory portable terminal, mobile terminal identification and stationkeeping ability, whether allow to be initiated the location services clients machine location of asking etc.Portable terminal/location services clients machine data storehouse is the part of mobile positioning center, and this processing process is undertaken by internal interface.
Execution in step 2.8, portable terminal is initiated Location Request to mobile positioning center;
Execution in step 2.9, mobile positioning center are selected corresponding positioning entity by the configuration relation of described mobile switching centre address and position determining entity, use the geographical position request message to send Location Request to position determining entity then.The configuration relation of described mobile switching centre address and position determining entity can be a mapping table about mobile switching centre address and position determining entity sign of preserving at mobile positioning center, by described mapping table, make the current position of portable terminal in the coverage of the gps satellite data of selected position determining entity.General selection, mobile switching centre address and position determining entity are designated many-to-one corresponding relation, and promptly a position determining entity can correspond to a plurality of mobile switching centres address.。So just can obtain the sign of corresponding positioning entity easily from the mobile switching centre address,, be provided with a default position determining entity, to guarantee finishing of positioning service for the situation of searching less than corresponding relation;
Execution in step 2.10, mobile positioning center sends location response to portable terminal, activates portable terminal and initiates the positioning interaction session;
Execution in step 2.11, the localization message between position determining entity and the portable terminal is mutual, carries out the calculating of location information of mobile terminal;
Execution in step 2.12, finish the location, and position determining entity uses the geographical position request response to send positioning result to mobile positioning center, mobile positioning center storage destination mobile terminal current location information;
Execution in step 2.13, mobile positioning center are returned location information of mobile terminal and are given the location professional client computer;
Execution in step 2.14, portable terminal sends request for location services by WAP to the location services clients machine;
Execution in step 2.15, the location services clients machine is given portable terminal by WAP restoring to normal position information on services, for portable terminal provides service.Finish.
At above-mentioned idiographic flow, mobile positioning center is determined corresponding position determining entity by the address of the on-site mobile switching centre of roaming of described portable terminal, and the address of the on-site mobile switching centre of roaming of portable terminal obtains by short message solicitation message SMSREQ.Certainly, for the address of the on-site mobile switching centre of roaming that obtains portable terminal, we also can be by realizing that other standard message of this function realize in self-defined new message or the employing system.Here, we launch explanation to short message solicitation message SMSREQ.According to CHINAUNICOM " specification requirement of 800MHz CDMA digital mobile cellular telecommunication net MAP ", SMSREQ message is used to ask the mobile switch address and the status of mobile terminal at portable terminal place.Concrete parameter is as follows:
(1) concrete parameter is as follows in the request:
| Parameter | Type | Note |
| MIN | M | (mobile terminal identification) |
| ESN | 0 | Electronic Serial Number |
| SMS-notice sign | 0 | SMS notifies sign |
| SMS-service identifiers | 0 | The SMS service identifiers |
(1) parameter in the response result of returning:
| Parameter | Type | Note |
| ESN | 0 | Electronic Serial Number |
| SMS-access is negated a reason | 0 | It negates reason that SMS inserts |
| SMS-address | 0 | The interim routing address of the SMS of MS |
Parameter declaration in the table:
1. " M " represents mandatory parameter, " 0 " expression optional parameters;
2. " SMS-address " is the mobile switching centre address at mobile terminal roaming place;
3. " SMS-access is negated a reason " can show status of mobile terminal (arrearage, situations such as shutdown).
Further, another kind of embodiment of the present invention is described.According to Fig. 4, show another kind of the present invention and initiatively initiate the positioning flow of locating by portable terminal, this flow process is based on the travelling carriage built-in application.Its concrete implementation step is as follows:
Execution in step 3.1, portable terminal is initiated Location Request to mobile positioning center;
Execution in step 3.2, mobile positioning center sends the request message of the address of the on-site mobile switching centre of mobile terminal roaming to the open an account attaching position register on ground of travelling carriage, in the present embodiment, mobile positioning center sends SMSREQ message to the open an account attaching position register on ground of travelling carriage;
Execution in step 3.3, attaching position register are returned SMSREQ message, carry parameters such as short message address (being the address of the on-site mobile switching centre of mobile terminal roaming), the negative reason of short message access among the SMSREQ.Can increase in this step simultaneously by the short message address in the SMSREQ return messages being judged whether portable terminal is in the packet data network coverage, or increase the judgement of portable terminal positioned area restriction etc., also can insert by short message negates that reason is judged whether situation such as arrearage of portable terminal.
Execution in step 3.4, mobile positioning center sends authentication message to portable terminal/roaming place mobile positioning center address database, checks whether the portable terminal and the corresponding mobile terminal TSR of initiating the location are authorized to;
Execution in step 3.5, portable terminal/roaming place mobile positioning center address database returns authenticating result to mobile positioning center.Authenticating result should comprise following information: whether location services clients machine and portable terminal are signatory portable terminal, mobile terminal identification and stationkeeping ability, whether allow to be initiated the location services clients machine location of asking etc.;
Execution in step 3.6, mobile positioning center are selected position determining entity by the configuration relation of mobile switching centre address and position determining entity, use the geographical position request message to send Location Request to position determining entity.The configuration relation of described mobile switching centre address and position determining entity can be a mapping table about mobile switching centre address and position determining entity sign of preserving at mobile positioning center, by described mapping table, make the current position of portable terminal in the coverage of the gps satellite data of selected position determining entity.General selection, mobile switching centre address and position determining entity are designated many-to-one corresponding relation, and promptly a position determining entity can correspond to a plurality of mobile switching centres address.So just can obtain the sign of corresponding positioning entity easily from the mobile switching centre address,, be provided with a default position determining entity, to guarantee finishing of location for the situation of searching less than corresponding relation;
Execution in step 3.7, mobile positioning center sends location response to portable terminal, activates portable terminal and initiates the positioning interaction session.
Execution in step 3.8, the localization message between position determining entity and the portable terminal is mutual, carries out the calculating of mobile terminal locations;
Execution in step 3.9, position determining entity use geographical position request response to mobile positioning center restoring to normal position result.Finish.
According to above-mentioned two embodiments as can be known, obtain the address information of the relevant mobile switching centre on mobile terminal roaming ground, and then portable terminal is carried out the approximate location scope definition, select position determining entity by these information by the short message request.And select position determining entity by the user roaming place, can reduce the network design difficulty, reduce the number that is provided with of mobile positioning center and position determining entity, reduce cost, increase the flexibility on the network configuration, reduce the positioning accuracy that causes because base station data disappearance or gps satellite reference signal can't cover and reduce.The technical scheme of invention is except implementing in the navigation system based on packet network, also can in fixer network, implement based on Signaling System Number 7, not limited by concrete network environment, can in CDMA, GSM (Global System for Mobile communications, i.e. gsm) or WCDMA mobile communcations systems such as (Wideband Code Division MultipleAccess are a wideband CDMA system), implement.
Although the disclosed localization method that relates to mobile communcations system has been carried out special description with reference to embodiment, those skilled in the art can understand, under the situation that does not depart from scope and spirit of the present invention, can carry out all conspicuous modification of form and details to it.Therefore, embodiment described above is illustrative and not restrictive, and under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (8)
1, the localization method of mobile communcations system is characterized in that, comprises the steps:
(1) mobile positioning center receives Location Request;
(2) mobile positioning center sends a request message to the ground attaching position register of opening an account of the portable terminal of request positioning service, comprises the request to the on-site mobile switching centre of described mobile terminal roaming address in the described request message;
(3) described attaching position register returns the message that contains the on-site mobile switching centre of described mobile terminal roaming address to mobile positioning center;
(4) mobile positioning center is selected to send Location Request to corresponding positioning entity according to the configuration relation of mobile switching centre address and position determining entity;
(5) position interacting message between described position determining entity and the portable terminal, calculate the positional information of described portable terminal;
(6) position determining entity sends the positional information of described portable terminal to mobile positioning center.
2, the localization method of mobile communcations system according to claim 1 is characterized in that in the step (1) further comprising the steps of:
(1.1) portable terminal inserts the location services clients machine by the WAP mode, and sends request for location services;
(1.2) the location services clients machine sends Location Request to mobile positioning center;
And, further comprising the steps of in the step (3):
(4.1) the location services clients machine is replied to the request for location services that portable terminal returns portable terminal by the WAP mode;
And, further comprising the steps of in the step (6):
(6.1) mobile positioning center storage destination mobile terminal current location information;
(6.2) mobile positioning center returns location information of mobile terminal to the professional client computer in location;
(6.3) the location services clients machine is given portable terminal by WAP mode restoring to normal position information on services.
3, the localization method of mobile communcations system according to claim 1 is characterized in that in the step (1) further comprising the steps of:
Portable terminal is initiated Location Request to mobile positioning center.
According to the localization method of the described mobile communcations system of arbitrary claim in the claim 1 to 3, it is characterized in that 4, described request message is the short message solicitation message.
5, the localization method of mobile communcations system according to claim 4 is characterized in that, and is further comprising the steps of in the step (3):
Judge the whether step of arrearage of portable terminal according to insert negating cause parameter.
6,, it is characterized in that described configuration relation makes the current position of described portable terminal in the coverage of the gps satellite data of selected position determining entity according to the described localization method of claim 5 based on the mobile switching centre address.
7, according to the described localization method of claim 6, it is characterized in that in the described configuration relation, make a position determining entity can correspond to a plurality of mobile switching centres address based on the mobile switching centre address.
8, the localization method of mobile communcations system according to claim 6, it is characterized in that also comprising when described mobile switching centre address and position determining entity do not have configuration relation the time, be provided with the step of a default position determining entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03147016 CN1269370C (en) | 2003-09-27 | 2003-09-27 | Positioning method of mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03147016 CN1269370C (en) | 2003-09-27 | 2003-09-27 | Positioning method of mobile communication system |
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| Publication Number | Publication Date |
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| CN1602080A CN1602080A (en) | 2005-03-30 |
| CN1269370C true CN1269370C (en) | 2006-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03147016 Expired - Lifetime CN1269370C (en) | 2003-09-27 | 2003-09-27 | Positioning method of mobile communication system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450290C (en) * | 2005-07-04 | 2009-01-07 | 中兴通讯股份有限公司 | Method for realizing location entity switching-over in dependence mode |
| CN100379313C (en) * | 2005-07-28 | 2008-04-02 | 中国联合通信有限公司 | Method for implementing positioning based on mobile station |
| CN100433930C (en) * | 2006-01-24 | 2008-11-12 | 华为技术有限公司 | Method and system for providing positioning service message |
| CN101478718B (en) | 2008-12-31 | 2011-05-11 | 中兴通讯股份有限公司 | Method for enhancing performance of positioning system in continuous positioning process |
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- 2003-09-27 CN CN 03147016 patent/CN1269370C/en not_active Expired - Lifetime
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| CN1602080A (en) | 2005-03-30 |
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Granted publication date: 20060809 |