CN101557557A - System and method for realizing mobile location service - Google Patents
System and method for realizing mobile location service Download PDFInfo
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- CN101557557A CN101557557A CNA2009101075076A CN200910107507A CN101557557A CN 101557557 A CN101557557 A CN 101557557A CN A2009101075076 A CNA2009101075076 A CN A2009101075076A CN 200910107507 A CN200910107507 A CN 200910107507A CN 101557557 A CN101557557 A CN 101557557A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/024—Guidance services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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Abstract
The invention relates to a wireless communication technology and discloses a system and a method for realizing mobile location service, which are used for providing location information of a target mobile terminal for a client and comprise the client, a target mobile terminal, a location service platform and a communication server. When the client inputs user information and information of the target mobile terminal at the location service platform for opening an account, the location service platform sends the user information of the client and the information for requesting location information thereof to the target mobile terminal which then replies with an activation-permitting response message, and the communication server analyzes and stores the response message which is used for conducting authentication on the client when the client logs on and initiates a location request to the target mobile terminal. The invention activates the client and provides the location information only after obtaining the permission of the tracked target mobile terminal, thus protecting the privacy of the target terminal, having map and alarm information and being convenient and flexible in use.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to a kind of system and method for realizing mobile location service.
Background technology
Location-based business (Location Based Services, be called for short LBS), claim mobile location service or location 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 mobile subscriber, communication system or third party, and by the support of certain electronic map information, for mobile phone users provides calling or the non-calling class service relevant with its position.
Along with the release of mobile location service, the continuous expansion of mobile subscriber's amount, the segmentation demand of mobile location service is more and more urgent; But because location service relates to privacy problem, the whereabouts who is unwilling to stick one's chin out are easily given the third party, formed certain obstruction for carrying out of positioning service virtually, so in sector application, have many obstacles, but be that the positioning service of unit is carried out potential huge applications space is arranged with the family, this is because social instantly, the head of a family will understand own child's whereabouts constantly, love kinsfolk's safe condition utilizes mobile location service to add that certain map shows can get information about family member's scope of activities.
Because the cost of terminal is very low and very universal at present, and respectively runs the commercial city and built supporting mobile positioning center, even there is the location gateway to be responsible for access; Towards family is that the location service of unit is used and to be had the huge market potential can be for excavating.The benefit of this business is self-evident on the one hand to be the utilance that the location nucleus equipment can improve in operator, creates bigger value; On the one hand also satisfied the personal user in addition or be the customized demand of the groupuscule user of unit, helped further improving the value-added service competitiveness of operator for positioning service with the family.
Summary of the invention
The object of the present invention is to provide a kind of system and method for realizing mobile location service, can effectively realize the position of destination mobile terminal is followed the tracks of.Consider the privacy of protection tracked target mobile phone users, flow process of the present invention has increased the message interaction process with tracked terminal.
The invention discloses a kind of system that realizes mobile location service, be used for providing the positional information of destination mobile terminal to client; Comprise the described client of initiating Location Request and the described destination mobile terminal of request position information thereof, obtain the location service platform of positional information, connect the communication server of described location service platform; In described client when location service platform typing customer information and described destination mobile terminal information applications are opened an account, described location service platform sends to described destination mobile terminal to the information of the customer information of described client and its positional information of request by communication server, described destination mobile terminal is replied the response message that allows to activate and is given described communication server, and described communication server is resolved the response message of described permission activation and preserved; When described client was logined described location service platform and initiated Location Request to described destination mobile terminal, the response message that described communication server activates according to the described permission of being preserved was to described client authentication; Described communication server tectonic network side Location Request sends to corresponding position determining entity, and receives the location response message from described position determining entity, and the positional information that parses described destination mobile terminal offers described client.
The system of this realization mobile location service disclosed by the invention also comprises following subordinate technical characterictic:
Described client sends note to described communication server, to be used to initiate the Location Request to described destination mobile terminal.
When described client is logined described location service platform and initiated Location Request to described destination mobile terminal, also send corresponding such map requests; After described location service platform receives such map requests, according to the SPACCESS of UNICOM agreement, GIS agreement or built-in GIS engine interface, send described such map requests to corresponding entity, and receive the map datum that returns is used for showing described destination mobile terminal on the browser of described client the relevant map of positional information.
On the relevant map of the positional information of the described destination mobile terminal that shows on the browser of described client, the rectangular area or the route zone that set in advance are arranged, when the positional information of described destination mobile terminal departed from described rectangular area or route zone, described communication server sent warning information.
Described destination mobile terminal carries the global position system GPS chip; Described communication server receives the location response message from described destination mobile terminal, and the positional information that parses wherein offers described client.
The invention also discloses a kind of method that realizes mobile location service, be used for providing the positional information of destination mobile terminal to client; Comprise the steps: that (1) described client is at first in location service platform typing customer information and described destination mobile terminal information, open an account to be used for application, described location service platform sends to described destination mobile terminal to the information of the customer information of described client and its positional information of request by communication server, described destination mobile terminal is replied the response message that allows to activate and is given described communication server, and described communication server is resolved the response message of described permission activation and preserved; (2) when described client is logined described location service platform and initiate Location Request to described destination mobile terminal, the response message that described communication server activates according to the described permission of being preserved is to described client authentication; Described communication server tectonic network side Location Request sends to corresponding position determining entity, and receives the location response message from described position determining entity, and the positional information that parses described destination mobile terminal again offers described client.
Described step (1) further comprises:
At first described client is in the information of location service platform typing customer information and described destination mobile terminal, and application is opened an account; This moment described communication server to write down described client state be un-activation;
Described client initiates to activate request, described location service platform thereby generation activation instruction information, and send to described communication server; It is adaptive that described communication server carries out short-message protocol, constructs Submit message and be delivered to described destination mobile terminal by Short Message Service Gateway;
Described destination mobile terminal editor replys instruction and is returned to described communication server by described Short Message Service Gateway; Described communication server deposits in the database according to the answer instruction of protocol analysis, the described destination mobile terminal of processing, and upgrading described client is state of activation
A kind of system and method for realizing mobile location service disclosed by the invention, at first the information of the information of client and its positional information of request is sent to destination mobile terminal, treat to confirm again after destination mobile terminal is agreed the qualification of activation client-requested positional information, avoided invading destination mobile terminal holder's privacy.Client can be used flexibly by the positional information of short message mode request target portable terminal.Can display position information correlation map on the browser of client, and rectangular area and route scope can be set on map, when being offset be provided with regional, destination mobile terminal starts warning message, and easy to use.
Description of drawings
Fig. 1 is the interface schema of other entity in mobile positioning service system of the present invention and the wireless network.
Fig. 2 is the logical construction schematic diagram of mobile positioning service system of the present invention.
Fig. 3 is the client of the present invention activation process figure that opens an account.
Fig. 4 is that client of the present invention is obtained map and the flow chart that the region-of-interest route is set.
Fig. 5 is that client of the present invention is by the flow chart of short message mode initiation to the Location Request of destination mobile terminal.
Fig. 6 is the present invention initiates position tracking and the request of regional route alarm prompt by client a flow chart.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
The invention provides a kind of location-based service application implementation method, below service implementation flow process of the present invention is described in detail.
Reference is shown in Figure 1 to be the interface schema of other entity in mobile positioning service system of the present invention and the wireless network, be the position of location service platform application system in network, there is shown location service platform 202 and short messaging gateway (short message service center) 103, packet data node/GPRS (GPRS) gateway support node (PDSN:Packet Data Services Node, GPRS:General Packet Radio Service, GGSN:Gateway GPRS Supporting Node) 105, local position connecting system 102, cartographic information supplier 101, relation between the mobile positioning center/location service administrative center (MPC:Mobile Position Center, LSMC:Location Service Management Center) 107.Client 201 is obtained the positional information of destination mobile terminal 109 by HTTP contact location business platform 202.
As shown in Figure 1, issuing with up of short message all by Short Message Service Gateway or short message service center 103, wherein Short Message Service Gateway 103 can be SMG (the Short Message Gateway of UNICOM, short messaging gateway), also can be ISMG (the Internet Short Message Gateway that moves, internet short message gateway), also can be the SMGW of telecommunications.Short Message Service Gateway 103 can pass through SGIP, CMPP, SMGP and SMPP contact location business platform 202.
With reference to shown in Figure 2, be the logical construction schematic diagram of mobile positioning service system of the present invention.As can be seen from the figure, mobile positioning service system comprises the terminal program 204 of client browser 201, location service platform 202, communication server 203 and destination mobile terminal.
Client browser 201 among the figure operates on client operation person's the browser, can receive the prompting that control is downloaded first during registering service platform 202, program has the prompting that can receive auto-update when upgrading, with the communication of service processor based on the HTTP+XML message mode; The major function of client browser 201 is, obtain the current destination mobile terminal user list that lands number of the account management, the destination mobile terminal of choosing is sent positioning instruction (single location and continue to follow the tracks of), sends such map requests etc., and reception is from the response of location service platform 202, data in the resolution response represent the result to client operation person again; For example show by managing mobile terminal whether trigger alarm conditions,, then send alarm signal if trigger.
Client browser 201 to the service processor Request System time, is used for upgrading client time after login in order correctly to judge the new and old of positioning result, is consistent with location service platform 202 server times.
Communication server 203 is responsible for nearly all external communication, reception is from the inside story of location service platform 202, and the encapsulation of making agreement sends to corresponding entity, as: Short Message Service Gateway 103 (or short message service center), mobile positioning center/location service administrative center etc.; Reception deposits in the database after the parsing from the protocol message of each entity.
Short Message Service Gateway 103 is supported the Short message Gateway Interface Protocol (SGIP of UNICOM, Short Message GatewayInterface Protocol), China Mobile Peer to Peer Protocol (CMPP, China Mobile Peer to Peer), SMGP (the SMGP of China Telecom, Short Message Gateway Protocol) and Short Message Peer to Peer (SMPP, Short Message Peer to Peer), be responsible for up terminal and initiate (MO, Mobile Originated) reception of message and downstream station stop issuing of (MT, Mobile Terminated) message.
Terminal program refers to that the destination mobile terminal 109 that is positioned carries the GPS chip, receives the short message instruction that communication server 203 sends, and finish the task of instruction regulation: single is located or continued and follows the tracks of, and constantly reports position result to arrive communication server 203.
When adopting built-in GIS engine, location service platform 202 can doublely be done map server.
With reference to shown in Figure 3, be the service application client activation process figure that opens an account; The activation process purpose is in order to protect destination mobile terminal user's privacy, could to implement monitoring and management to it after assurance has only this terminal use to authorize.This has effectively evaded the dispute that infringement individual position privacy is brought, and has guaranteed professional promoting the use of.
The activation process of opening an account comprises the steps:
Step S301: the client utilizes client browser 201 (WEB platform) to open an account, the password of location service platform 202 is landed in setting, input client terminal number, also set some attributes that are relevant to the destination mobile terminal user with the destination mobile terminal information of needs management, as: locate mode, display icon etc.Terminal use's state of this client still is ' un-activation ' state after opening an account.
Step S302: the client opens an account and preserves the relevant information of typing after the success, and initiates to activate the operation of destination mobile terminal on client browser 201.
Step S303: location service platform 202 generates activation instruction, and sends to communication server 203.
Step S304: communication server 203 carries out short-message protocol adaptive (SGIP/CMPP/SMGP/SMPP), and structure Submit message dilivery is to Short Message Service Gateway 103 (or short message service center).
Step S305: received activation instruction message by the managing mobile terminal user, message content roughly comprises following important information: and " management of end-user name and termination number activate it, allow? and reply dependent instruction to assigned address ".
Step S306: replied instruction by management of end-user according to the prompting message editor and be returned to assigned address.
Step S307: short messaging gateway (or short message service center) 103 is delivered the response message of destination mobile terminal to communication server 203.
Step S308: communication server 203 is resolved according to agreement (SGIP/CMPP/SMGP/SMPP), and the processing terminal reply content deposits in the database, upgrades client's state of activation, and the activation process of opening an account finishes.
With reference to shown in Figure 4, be that client 201 of the present invention is obtained map and the flow chart that the region-of-interest route is set.
Step S401: the client utilizes the number of the account of opening an account to land location service platform 202 doors at client browser 201.
Step S402: account-opening person is the place of execution graphic operation on client browser, as map amplify, map dwindles, full figure, map translation, and sends corresponding such map requests by client-side program.
Step S403: location service platform 202 receives such map requests, it is adaptive to carry out corresponding protocol according to configuration, support the SPACCESS of UNICOM agreement, GIS agreement, built-in GIS engine interface, transmit a request to corresponding entity, and receive the needed map datum that returns.
Step S404: built-in GIS engine, local position connecting system or GIS supplier generate needed map datum according to the request from location service platform 202, return to location service platform 202.
Step S405: location service platform 202 replies to the response of client-side program 201 corresponding to step S402.
Step S406: client-side program 201 is data according to the map, represent map and are presented on the client browser.
Step S407: the client is according to the map of showing, selecting the geographic range of concern, the region-of-interest route is set on map, can be rectangular area and route zone, be provided with into/go out short message prompt for the rectangular area, the bias short message prompt is set for the route zone.
Step S408: the client preserves relevant range route and relevant parameter data and corresponding map incidence relation in database.
With reference to shown in Figure 5, be that client of the present invention is by the flow chart of short message mode initiation to the Location Request of office terminal.
Step S501: the client utilizes short message mode, sends the communication server 203 that note is used to location service according to the specify message form.
Step S502: communication server 203 is received up note, resolves note number and command content.
Step S503: the number of 203 pairs of parsings of communication server carries out authentication, and whether the terminal of whether opening an account is effective.If have assigned number in the instruction, whether the monitored number of authentication is in the current terminal management tabulation of opening an account, otherwise denial of service.
Step S504: authentication is passed through, and initiates for specifying or institute office terminal and the destination mobile terminal that is in state of activation carry out the position and follow the tracks of.
With reference to shown in Figure 6, be that the present invention initiates position tracking and regional route alarm prompt request flow chart by client.
Step S601: the client login position business platform 202 of opening an account, select the terminal use who needs the position to follow the tracks of in the excited users tabulation of office terminal.
Step S602: location service platform 202 is received client location tracking request, sends trace command to communication server 203.
Step S603: communication server 203 is resolved and is followed the tracks of number, determine that according to opening an account the position tracking strategy carries out protocol adaptation (supporting Spaccess/L1/Le), tectonic network side Location Request sends to corresponding position determining entity, and (local position inserts/MPC/GMLC/LSMC), ends up to following the tracks of the concluding time.
Step S604: communication server 203 receives the response message from position determining entity, and according to agreement response message is resolved.
Step S605: the positional information warehouse-in of 203 pairs of parsings of communication server, and whether the band of position route of judging the designated terminal association is in the alarm prompt state, pay close attention to outside the route of safe range zone if be in, need to send short message prompt to the client that opens an account, short message content roughly as " name+termination number+depart from how many distances of appointed area route ".
Step S606: client 201 can show the position of track terminal in real time, and connect the front and back position track with chain-dotted line, exceed current body of a map or chart for location track, need to switch map to the track up-to-date map, need the flash for prompting frame for the terminal that regional route alarm is arranged.
The present invention also supports the customization business of opening an account, and inquires about the historical trace track of all office terminals of effectively activating, and can carry out the route playback.This design has good dynamic effect, has strengthened the result of use of location service.
The present invention by the following technical solutions, a kind of location-based service application implementation method, technical scheme is as follows:
Based on the B/S pattern, client is used browser, operates on the web page, saves the worry of install software and configuration, and is extremely easy to use.
Location-based service application implementation method simply is described as following 2 parts:
One, user management:
The client need open an account at location service platform, and the information that need provide of opening an account is as follows:
(1) provides oneself mobile phone users number, the password of login platform, but follow-up termination number whereby and password login position business platform.
(2) the relevant set meal that provides of chosen position business platform, this set meal have been arranged the time period that follow-up location is followed the tracks of, and the location is waited some systems settings relevant with the location at interval.
(3) client's typing oneself needs kinsfolk's Subscriber Number of management.
(4) after client's the information of opening an account was preserved, location service platform can send confirmed note to by managing mobile terminal, in order to confirm whether to accept the management from certain user and termination number thereof.Acknowledge message can repeatedly be initiated.
(5) acknowledge message is replied the result and is deposited the location service platform database in.
Two, location service is used:
This uses the position tracking of initiating destination mobile terminal and can divide following two kinds of situations to implement:
(1) client terminal is issued location service platform with short message mode, and after authentication, client terminal can carry out the position to destination mobile terminal user member its management, that activated to be followed the tracks of.
(2) by the WEB interface, the input terminal number and the password login position business platform of opening an account, thus initiate the tracking of destination mobile terminal that family is managed, can on map, check pursuit path simultaneously.
This location service is used and can the regional route track that protection is followed the tracks of be set at location service platform; and certain side-play amount is set, in tracked process, departed from the appointed area route and can send information with short message mode by platform and confirm or prompting to show when family manages child that the member particularly guards to the side of opening an account.
Claims (10)
1. system that realizes mobile location service is used for providing to client the positional information of destination mobile terminal; It is characterized in that, comprise the described client of initiating Location Request and the described destination mobile terminal of request position information thereof, obtain the location service platform of positional information, connect the communication server of described location service platform; In described client when location service platform typing customer information and described destination mobile terminal information applications are opened an account, described location service platform sends to described destination mobile terminal to the information of the customer information of described client and its positional information of request by communication server, described destination mobile terminal is replied the response message that allows to activate and is given described communication server, and described communication server is resolved the response message of described permission activation and preserved; When described client was logined described location service platform and initiated Location Request to described destination mobile terminal, the response message that described communication server activates according to the described permission of being preserved was to described client authentication; Described communication server tectonic network side Location Request sends to corresponding position determining entity, and receives the location response message from described position determining entity, and the positional information that parses described destination mobile terminal offers described client.
2. as power 1 described system, it is characterized in that described client sends note to described communication server, to be used to initiate Location Request to described destination mobile terminal.
3. as power 1 described system, it is characterized in that, when described client is logined described location service platform and initiated Location Request to described destination mobile terminal, also send corresponding such map requests; After described location service platform receives such map requests, according to the SPACCESS of UNICOM agreement, GIS agreement or built-in GIS engine interface, send described such map requests to corresponding entity, and receive the map datum that returns is used for showing described destination mobile terminal on the browser of described client the relevant map of positional information.
4. as power 3 described systems, it is characterized in that, on the relevant map of the positional information of the described destination mobile terminal that shows on the browser of described client, the rectangular area or the route zone that set in advance are arranged, when the positional information of described destination mobile terminal departed from described rectangular area or route zone, described communication server sent warning information.
5. as power 1 described system, it is characterized in that described destination mobile terminal carries the global position system GPS chip; Described communication server receives the location response message from described destination mobile terminal, and the positional information that parses wherein offers described client.
6. method that realizes mobile location service is used for providing to client the positional information of destination mobile terminal; It is characterized in that, comprise the steps: that (1) described client is at first in location service platform typing customer information and described destination mobile terminal information, open an account to be used for application, described location service platform sends to described destination mobile terminal to the information of the customer information of described client and its positional information of request by communication server, described destination mobile terminal is replied the response message that allows to activate and is given described communication server, and described communication server is resolved the response message of described permission activation and preserved; (2) when described client is logined described location service platform and initiate Location Request to described destination mobile terminal, the response message that described communication server activates according to the described permission of being preserved is to described client authentication; Described communication server tectonic network side Location Request sends to corresponding position determining entity, and receives the location response message from described position determining entity, and the positional information that parses described destination mobile terminal again offers described client.
7. as power 6 described methods, it is characterized in that in described step (2), described client sends note to described communication server, to be used to initiate Location Request to described destination mobile terminal.
8. as power 6 described methods, it is characterized in that, in described step (2), when described client is logined described location service platform and initiated Location Request to described destination mobile terminal, also send corresponding such map requests; After described location service platform receives such map requests, according to the SPACCESS of UNICOM agreement, GIS agreement or built-in GIS engine interface, send described such map requests to corresponding entity, and receive the map datum that returns is used for showing described destination mobile terminal on the browser of described client the relevant map of positional information.
9. as power 8 described methods, it is characterized in that, in described step (2), also comprise the steps: on the relevant map of the positional information of the described destination mobile terminal that shows on the browser in described client, rectangular area or route zone are set, when the positional information of described destination mobile terminal departs from described rectangular area or route zone, send warning information.
10. as power 6 described methods, it is characterized in that described step (1) further comprises:
At first described client is in the information of location service platform typing customer information and described destination mobile terminal, and application is opened an account; This moment described communication server to write down described client state be un-activation;
Described client initiates to activate request, described location service platform thereby generation activation instruction information, and send to described communication server; It is adaptive that described communication server carries out short-message protocol, constructs Submit message and be delivered to described destination mobile terminal by Short Message Service Gateway;
Described destination mobile terminal editor replys instruction and is returned to described communication server by described Short Message Service Gateway; Described communication server deposits in the database according to the answer instruction of protocol analysis, the described destination mobile terminal of processing, and upgrading described client is state of activation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101075076A CN101557557A (en) | 2009-05-14 | 2009-05-14 | System and method for realizing mobile location service |
| PCT/CN2009/074513 WO2010130122A1 (en) | 2009-05-14 | 2009-10-19 | System and method for implementing mobile positioning service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101075076A CN101557557A (en) | 2009-05-14 | 2009-05-14 | System and method for realizing mobile location service |
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| CN101557557A true CN101557557A (en) | 2009-10-14 |
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| CNA2009101075076A Pending CN101557557A (en) | 2009-05-14 | 2009-05-14 | System and method for realizing mobile location service |
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| WO (1) | WO2010130122A1 (en) |
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| CN101159915B (en) * | 2007-11-16 | 2010-09-08 | 中兴通讯股份有限公司 | Position service servicing system and method for providing position information thereof |
| CN101557557A (en) * | 2009-05-14 | 2009-10-14 | 中兴通讯股份有限公司 | System and method for realizing mobile location service |
-
2009
- 2009-05-14 CN CNA2009101075076A patent/CN101557557A/en active Pending
- 2009-10-19 WO PCT/CN2009/074513 patent/WO2010130122A1/en active Application Filing
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| CN103888520A (en) * | 2014-03-10 | 2014-06-25 | 百度在线网络技术（北京）有限公司 | Method and device for obtaining position information of mobile terminal, and mobile terminal |
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| CN108322886A (en) * | 2017-12-15 | 2018-07-24 | 腾讯科技（深圳）有限公司 | The method for authenticating and device of terminal positioning data |
| CN108322886B (en) * | 2017-12-15 | 2019-12-06 | 腾讯科技（深圳）有限公司 | Authentication method and device for terminal positioning data |
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| CN109413049B (en) * | 2018-09-30 | 2021-04-20 | 中电科新型智慧城市研究院有限公司福州分公司 | Data safety communication method and system based on web map transmission |
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