CN101625244B - Method and system for navigating mobile terminal - Google Patents
Method and system for navigating mobile terminal Download PDFInfo
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- CN101625244B CN101625244B CN 200810116386 CN200810116386A CN101625244B CN 101625244 B CN101625244 B CN 101625244B CN 200810116386 CN200810116386 CN 200810116386 CN 200810116386 A CN200810116386 A CN 200810116386A CN 101625244 B CN101625244 B CN 101625244B
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Abstract
The invention discloses a method and a system for navigating a mobile terminal. The main scheme comprises that: an assisted global positioning system AGPS server receives a navigation request including a terminal identification of a destination terminal at a moving state and initialized by a source terminal, and periodically returns the position information of the destination terminal corresponding to the terminal identification; a navigation server receives the position information of the destination terminal, acquires a navigation route according to the position information of the source terminal and the position information of the destination terminal received each time, and sends the navigation route to the source terminal; and the source terminal displays the navigation route acquired by the navigation server. By the method and the system, the distance and the precision of navigating the moving destination terminal can be improved.
Description
Technical field
The present invention relates to airmanship, relate in particular to a kind of method and system that portable terminal is navigated.
Background technology
Utilize at present GPS (the Global Positioning System in the portable terminal, when GPS) navigation software navigates to portable terminal, it all is the destination address (address of purpose terminal) of searching a static state at GPS navigation software, then begin navigation from source address (address of source terminal), calculative determination goes out source address to guidance path between the destination address, realizes navigation procedure.
Above-mentioned GPS navigation technology can't realize the purpose terminal of a motion is navigated in real time, the existing method that the purpose terminal of motion is navigated in real time is: in the purpose terminal magnetic field generator is installed, when navigating, even the purpose terminal is kept in motion, magnetic field generator also can with magnetic field receiver interworking, to magnetic field receiver emission information; Then the magnetic field receiver utilizes the real-time positional information of this purpose terminal to navigate by the real-time position of the purpose terminal information of the signal intensity that receives and orientation determination motion.Except utilizing magnetic field generator that the purpose terminal is positioned, can also utilize frequency range or light generator that the purpose terminal is positioned.
But, because the signal transmitting range of the equipment such as magnetic field generator is limited (along with the distance of emission is far away, the signal intensity decline is larger), this method that the purpose terminal of motion is navigated can only be navigated in short distance, and (such as high building etc.) is to the reasons such as signal obstruct of magnetic field generator emission because real external environment, so that not high to the bearing accuracy of purpose terminal, when practical operation, application scenarios there is higher requirement.
Summary of the invention
The embodiment of the invention provides a kind of method and system that portable terminal is navigated, to improve distance and the precision that the purpose terminal that is kept in motion is navigated.
A kind of method that portable terminal is navigated, the method comprises:
The navigation request of the terminal iidentification that comprises the purpose terminal that is kept in motion that auxiliary global satellite positioning system AGPS server reception sources terminal is initiated, and periodically return the positional information of purpose terminal corresponding to described terminal iidentification;
Navigation server receives described purpose terminal positional information, obtains guidance path according to the positional information of source terminal and the described purpose terminal positional information that receives at every turn, and this guidance path is sent to source terminal;
The described guidance path that source terminal show navigator server obtains.
A kind of method that portable terminal is navigated, the method comprises:
The navigation request of the terminal iidentification that comprises the purpose terminal that is kept in motion that auxiliary global satellite positioning system AGPS server reception sources terminal is initiated, and periodically return the positional information of purpose terminal corresponding to described terminal iidentification;
Source terminal receives described purpose terminal positional information, obtains guidance path according to the positional information of self and the described purpose terminal positional information that receives at every turn, and shows described guidance path.
A kind of system that portable terminal is navigated, this system comprises:
Source terminal is used for initiating navigation request, comprises the terminal iidentification of the purpose terminal that is kept in motion in this navigation request, and shows the guidance path that receives;
The AGPS server after being used for receiving described navigation request, periodically returns the positional information of purpose terminal corresponding to described terminal iidentification;
Navigation server is used for receiving the purpose terminal positional information that the AGPS server returns, and obtains guidance path according to the positional information of source terminal and the described purpose terminal positional information that receives at every turn, and this guidance path is sent to source terminal.
A kind of system that portable terminal is navigated, this system comprises:
Source terminal, be used for initiating navigation request, the terminal iidentification that comprises the purpose terminal that is kept in motion in this navigation request, and receive the purpose terminal positional information, obtain guidance path according to the positional information of self and the described purpose terminal positional information that receives at every turn, and show described guidance path;
The AGPS server after being used for receiving described navigation request, periodically returns the positional information of purpose terminal corresponding to described terminal iidentification.
In the embodiment of the invention, auxiliary global satellite positioning system AGPS server receive by source terminal initiate for after the purpose terminal guidance request that is kept in motion, periodically return the purpose terminal positional information, can calculate guidance path according to the positional information of source terminal and the purpose terminal positional information that receives at every turn by source terminal or navigation server with this.No matter how far the distance of purpose terminal motion has, after as long as the AGPS server returns a purpose terminal positional information, just can calculate once new guidance path, improved the distance to the purpose terminal guidance that is kept in motion, and, the AGPS server is not limited by actual application scenarios to the detection of purpose terminal positional information, improved the precision to the purpose terminal guidance.
Description of drawings
Fig. 1 is the method flow synoptic diagram that in the embodiment of the invention one portable terminal is navigated;
Fig. 2 (a) and Fig. 2 (b) judge the synoptic diagram whether current purpose terminal positional information that receives changes guidance path in the embodiment of the invention one;
Fig. 3 is the system architecture synoptic diagram that in the embodiment of the invention two portable terminal is navigated.
Embodiment
Describe the present invention below in conjunction with Figure of description.
As shown in Figure 1, be the method step synoptic diagram that in the embodiment of the invention one portable terminal is navigated, the method may further comprise the steps:
Step 101: source terminal navigation server (Navigation Server, NS) is initiated navigation request, has comprised the terminal iidentification of the purpose terminal that is kept in motion in this navigation request.
The purpose terminal that relates in present embodiment one and source terminal can be portable terminal (such as mobile phones), and can both be kept in motion.Information interaction between source terminal and purpose terminal and navigation server and the AGPS server can be by GPRS (General Packet Radio Service, GPRS), the communication networks such as EDGE-CDMA or TD SDMA (Time Division Synchronized Code DivisionMultiple Access, TD-SCDMA) are realized.
Step 102: navigation server sends to dynamic navigation engine (DynamicNavigation Engine, DNE) with navigation request.
Step 103: the dynamic navigation engine sends to auxiliary global satellite positioning system (Assisted GPS, AGPS) server with navigation request.
The dynamic navigation engine comprises to the method that the AGPS server sends navigation request: the dynamic navigation engine sends described navigation request by the Le interface to the location-based service applicator platform (Location Service Platform, LSP) of AGPS server; LSP is sent to other work entities in the AGPS server with described navigation request by the Lp interface again.
After step 104:AGPS server receives navigation request, periodically determine and return the purpose terminal positional information to the dynamic navigation engine.
In this step, the LSP in the AGPS server returns the purpose terminal positional information by the Le interface to the dynamic navigation engine.
In step 103, the dynamic navigation engine can increase a setting-up time in navigation request, requires the AGPS server to return the positional information of purpose terminal take this setting-up time as the cycle in step 104; Also can be that the AGPS server is initiatively determined a setting-up time in step 104, and periodically return the positional information of purpose terminal according to this setting-up time.
Dynamic navigation engine in the present embodiment is a logic entity, can be positioned at navigation server, integrates with navigation server, also can be arranged in the AGPS server, and is together integrated with the AGPS server.
The method that the AGPS server obtains the purpose terminal positional information is as follows:
The first step: the purpose terminal with current address for base station that service is provided self by Internet Transmission to the AGPS server;
Second step: the AGPS server is roughly determined the address of purpose terminal according to the address of base station, and the GPS supplementary that the roughly address of this purpose terminal is relevant with this address (comprising the ephemeris of GPS and azimuth pitch angle etc.) is transferred to the purpose terminal;
The 3rd step: the purpose terminal receives the GPS original signal according to the GPS supplementary, and after receiving the GPS original signal this signal of demodulation, calculate the purpose terminal to the GPS pseudorange (pseudorange is the distance that is subjected to various GPS error effects) of satellite, and GPS pseudorange information exchange is crossed Internet Transmission to the AGPS server;
The 4th step: the AGPS server is according to the GPS pseudorange information that receives and calculate the positional information of this purpose terminal from the supplementary of other positioning equipments (such as the differential GPS base station etc.).
If the user is lower to the positional information accuracy requirement of purpose terminal, then in second step, the AGPS server can be with the address of the current base station that service is provided for the purpose terminal that the receives positional information as the purpose terminal.
Step 105: source terminal is to user's show navigator path, and this guidance path is according to the positional information of source terminal and the described purpose terminal positional information that receives calculative determination respectively at every turn.
Can to be source terminal determine according to the positional information for base station that service is provided self positional information of source terminal, after source terminal is determined the positional information of self in real time, self positional information reported navigation server.
In this step, guidance path can be by the navigation server calculative determination, also can be by the source terminal calculative determination, and these two kinds of embodiments are as follows:
The first, in the mode of navigation Network Based, the dynamic navigation engine sends to navigation server with the purpose terminal positional information that receives, by the positional information calculation guidance path of navigation server according to the current purpose terminal positional information that receives and source terminal, and after this guidance path sent to source terminal, acquired guidance path before source terminal upgrades, the guidance path behind user's display update.
The second, in the navigate mode based on terminal this locality, navigation server is transmitted to source terminal with the purpose terminal positional information that receives, by the positional information calculation guidance path of source terminal according to the current purpose terminal positional information that receives and source terminal, and acquired guidance path before upgrading, the guidance path behind user's display update.
By the description of above step 101 to step 105, realized the purpose terminal of motion is carried out remote, high-precision navigation.Further, can be optimized flow of navigation of the present invention: in order in navigation procedure, to reduce Signalling exchange, in the higher situation of the guidance path accuracy of guaranteeing to use, reduce the number of times that navigation server or source terminal calculate guidance path, the dynamic navigation engine can detect each purpose terminal positional information that the AGPS server periodically returns, only will wherein send to navigation server to the current larger purpose terminal positional information of guidance path impact, and do not send other to the less purpose terminal positional information of guidance path impact, so that navigation server or source terminal needn't calculate guidance path according to each purpose terminal positional information that periodically arrives, saved system resource.
Particularly, the dynamic navigation engine comprises the method that each the purpose terminal positional information that receives detects: judge by the route computation rule of Geographic Information System (Geographics Information System, GIS) whether the current positional information of purpose terminal can make current guidance path change.In the present embodiment, judge that the method whether guidance path changes is:
At first, the purpose terminal positional information that received according to current guidance path and a upper cycle is that the purpose terminal is set the primary motor area territory;
Then, judge whether the current purpose terminal positional information that receives is arranged in the primary motor area territory of setting;
At last, if judged result is the primary motor area territory that the current positional information of purpose terminal is arranged in setting, think that then direction and distance that the current purpose terminal positional information that receives received the purpose terminal positional information with respect to a upper cycle affect little on guidance path, the dynamic navigation engine does not need the positional information of the current purpose terminal that receives is sent to navigation server, further, when judging whether purpose terminal positional information that next cycle receives can make guidance path change, can still use above-mentioned primary motor area territory, also can reset the zone according to the purpose terminal positional information.If judged result is that the current purpose terminal positional information that receives is not in the first area of setting, think that then the current purpose terminal positional information that receives can make current guidance path change, need the current purpose terminal positional information that receives is sent to navigation server, recomputate guidance path by navigation server or source terminal according to the current purpose terminal positional information that receives and source terminal positional information, obtain in real time best guidance path.
For example, shown in Fig. 2 (a) and Fig. 2 (b), suppose that A is that source terminal is in t1 moment position, B is that the purpose terminal is in t1 moment position, be t1 guidance path constantly by A to B solid arrow, the dotted line frame is the primary motor area territory of setting according to current guidance path.If be the t2 moment after a cycle length, the purpose terminal has moved to B ' by B, then in Fig. 2 (a), the purpose terminal is positioned at the primary motor area territory of setting at t2 positional information B ' constantly, at this moment, think that t1 guidance path constantly remains t2 best guidance path road boat constantly, therefore, the positional information of B ' does not need to send to navigation server, and t1 guidance path does not constantly need modification can directly be applied in t2 constantly; In Fig. 2 (b), the purpose terminal is not being set in the primary motor area territory at t2 positional information B ' constantly, therefore, t1 guidance path constantly can not become t2 best guidance path constantly, the positional information of B ' need to send to navigation server, and recomputate guidance path, obtain the guidance path constantly of the t2 shown in the dotted arrow among Fig. 2 (b).
When realizing, this detection method to the purpose terminal positional information also to consider the range of movement from a upper cycle to the current time source terminal, if source terminal according to guidance path motion or source terminal in the second motor area territory of setting, when then the purpose terminal positional information satisfies requiring of setting, can recomputate guidance path.If but source terminal is not to move according to guidance path, perhaps at random, grand movement has still surpassed the second motor area territory, even then the purpose terminal positional information satisfies the requirement of setting, still can be so that current guidance path can not embody the routing information between source terminal and the purpose terminal truly, therefore, current routing information still needs to recomputate.
Corresponding with the embodiment of the invention one, the embodiment of the invention two has also been put down in writing a kind of system that portable terminal is navigated, as shown in Figure 3, this system comprises: source terminal 11, AGPS server 12 and navigation server 13, wherein, source terminal 11 is used for initiating navigation request, comprises the terminal iidentification of the purpose terminal that is kept in motion in this navigation request, and shows the guidance path that receives; After AGPS server 12 is used for receiving described navigation request, periodically return the positional information of purpose terminal corresponding to described terminal iidentification; Navigation server 13 is used for receiving the purpose terminal positional information that AGPS server 12 returns, and obtains guidance path according to the positional information of source terminal and the described purpose terminal positional information that receives at every turn, and this guidance path is sent to source terminal 11.
Described system also comprises dynamic navigation engine 14, be used for the described navigation request that source terminal 11 is initiated is transmitted to AGPS server 12 by the Le interface, and the described purpose terminal positional information that AGPS server 12 periodically returns is transmitted to described navigation server by the Le interface.
Described dynamic navigation engine 14 is used for judging according to the current purpose terminal positional information that receives whether this positional information can change acquired current guidance path; If judged result is for changing current guidance path, then dynamic navigation engine 14 returns to navigation server 13 with the current purpose terminal positional information that receives, otherwise, do not return.
Described dynamic navigation engine 14 is used for setting the primary motor area territory according to the purpose terminal positional information that current guidance path and a upper cycle receive, if since last time calculating guidance path to current time, source terminal moves according to guidance path, perhaps in the second motor area territory of setting, move, judge then whether the current purpose terminal positional information that receives is arranged in described primary motor area territory, if, then judged result is that the current purpose terminal positional information that receives can not change current guidance path, otherwise judged result is that the current purpose terminal positional information that receives can change current guidance path.
The embodiment of the invention three also provides another system that portable terminal is navigated, system's difference among system among the embodiment three and the embodiment two is: among the embodiment three, after navigation server receives the purpose terminal positional information, be transmitted to source terminal, calculate guidance path by source terminal according to the positional information of self and the described purpose terminal positional information that receives at every turn, and show described guidance path.
By method and system provided by the invention, utilize the AGPS server that the positional information of purpose terminal is determined in real time, realized the purpose terminal of motion is carried out precision navigation, in the open space such as outdoor, its navigation error is only about 10 meters; Navigation procedure utilize communication network to transmit signaling mutual between each equipment, so that can be realized in the larger context; And, because the dynamic navigation engine only will return to navigation server to the influential purpose terminal positional information of current guidance path, reduced the number of times that navigation server or source terminal calculate guidance path, saved system overhead; In addition, the present invention utilizes the Le interface as the interface between navigation server and the AGPS server, so that the communication between navigation server and the AGPS server is easier.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (2)
1. method that portable terminal is navigated is characterized in that the method comprises:
The navigation request of the terminal iidentification that comprises the purpose terminal that is kept in motion that auxiliary global satellite positioning system AGPS server reception sources terminal is initiated, and periodically return the positional information of purpose terminal corresponding to described terminal iidentification, wherein, the described navigation request that source terminal is initiated is transmitted to the AGPS server by the dynamic navigation engine by the Le interface, and the described purpose terminal positional information that the AGPS server returns is transmitted to navigation server by the dynamic navigation engine by the Le interface;
Navigation server receives described purpose terminal positional information, obtains guidance path according to the positional information of source terminal and the described purpose terminal positional information that receives at every turn, and this guidance path is sent to source terminal;
The described guidance path that source terminal show navigator server obtains;
Wherein, the dynamic navigation engine is transmitted the purpose terminal positional information to before the navigation server, and described method also comprises:
The dynamic navigation engine is set the primary motor area territory according to current guidance path and the last purpose terminal positional information that receives;
Move according to guidance path at source terminal, when perhaps in the second motor area territory of setting, moving, if the current purpose terminal positional information that receives is arranged in described primary motor area territory, determine that the purpose terminal positional information that receives can not change current guidance path, does not then return to navigation server with the purpose terminal positional information that receives.
2. method that portable terminal is navigated is characterized in that the method comprises:
The navigation request of the terminal iidentification that comprises the purpose terminal that is kept in motion that auxiliary global satellite positioning system AGPS server reception sources terminal is initiated, and periodically return the positional information of purpose terminal corresponding to described terminal iidentification, wherein, the described navigation request that source terminal is initiated is transmitted to the AGPS server by the dynamic navigation engine by the Le interface, and, the described purpose terminal positional information that the AGPS server periodically returns is transmitted to navigation server by the dynamic navigation engine by the Le interface, is transmitted to source terminal by navigation server again;
Source terminal receives described purpose terminal positional information, obtains guidance path according to the positional information of self and the described purpose terminal positional information that receives at every turn, and shows described guidance path;
Wherein, the dynamic navigation engine is transmitted the purpose terminal positional information to before the navigation server, and described method also comprises:
The dynamic navigation engine is set the primary motor area territory according to current guidance path and the last purpose terminal positional information that receives;
Move according to guidance path at source terminal, when perhaps in the second motor area territory of setting, moving, if the current purpose terminal positional information that receives is arranged in described primary motor area territory, determine that the purpose terminal positional information that receives can not change current guidance path, does not then return to navigation server with the purpose terminal positional information that receives.
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| CN 200810116386 CN101625244B (en) | 2008-07-09 | 2008-07-09 | Method and system for navigating mobile terminal |
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Cited By (1)
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| CN104089622A (en) * | 2014-06-18 | 2014-10-08 | 中科创达软件股份有限公司 | Navigation method based on mobile terminals |
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| KR101708207B1 (en) | 2011-01-10 | 2017-02-20 | 삼성전자주식회사 | Apparatus and method for providing user's route information in mobile communication system |
| CN102164344B (en) * | 2011-02-21 | 2014-01-15 | 中国华录集团有限公司 | Navigation mobile phone for the blind |
| CN103220185B (en) * | 2012-01-20 | 2016-06-29 | 广州中海达卫星导航技术股份有限公司 | A kind of measuring method and the system of measurement |
| CN103702316B (en) * | 2013-12-30 | 2017-10-24 | 惠州Tcl移动通信有限公司 | The method and system that a kind of user behavior status information is shared with positional information |
| CN104848865B (en) * | 2014-02-18 | 2018-08-31 | 联想(北京)有限公司 | A kind of air navigation aid and electronic equipment |
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| CN101625244A (en) | 2010-01-13 |
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