CN100428862C - Zone trigger positioning method and device - Google Patents
Zone trigger positioning method and device Download PDFInfo
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- CN100428862C CN100428862C CNB2006100655333A CN200610065533A CN100428862C CN 100428862 C CN100428862 C CN 100428862C CN B2006100655333 A CNB2006100655333 A CN B2006100655333A CN 200610065533 A CN200610065533 A CN 200610065533A CN 100428862 C CN100428862 C CN 100428862C
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Abstract
The present invention discloses a area triggering positioning method which comprises that positioning period intervals are determined at preliminary stage of the area triggering positioning; in periodicity positioning process, a positioning period interval from the positioning to next positioning is adjusted according to the mobile speed of the object terminal; after the positioning period interval is adjusted, the next area triggering positioning process starts. The present invention also discloses a area triggering positioning device which comprises a positioning strategy negotiation unit, a positioning computing unit, a positioning result notification unit and a positioning period interval adjusting unit. The present invention can effectively raise the positioning efficiency of the mobile terminal, and save network resources.
Description
Technical field
The present invention relates to service technique field, shift position, be specifically related to a kind of Zone trigger positioning method and device based on user plane.
Background technology
SUPL (secure user plane location) is a kind of standard agreement that adopts user plane, allow the communications protocol of the position of mobile phone user's and acquisition running fix terminal mutual with location-server.
General instant terminal positioning is divided into network originated location and initial terminal location: the initiator of a request location initiates the location of another one terminal is belonged to network originated location by its client; Initiation belongs to the initial terminal location to the location of oneself.Its process is respectively:
When the initiator's of a request location client is used the location of initiating the another one terminal by residing in its MLS (Location based service), the H-SLP of target terminal (ownership location-server) notification target terminal begins the location, session by target terminal and this H-SLP, finish target terminal position calculation, notify MLS client with result of calculation at last, finish position fixing process; Corresponding therewith, when the SUPL terminal is initiated own location, the H-SLP session of this terminal and its ownership, and the final position of acquisition immediately oneself.
And the triggered location process is different from above-mentioned instant position fixing process.When the MLS of client used triggered location initiating target terminal, the triggered location condition resided among the H-SLP or target terminal of target terminal, when satisfying trigger condition, triggers the location sessions of this time.If trigger resides in H-SLP when going up then the position fixing process that trigger network starts, the position fixing process that triggering terminal starts if trigger resides on the target terminal.
Periodically the location is a kind of of triggered location, and it is the location of triggering at a certain time interval in a period of time target terminal, and purpose is to understand the positional information of target terminal in a period of time.
Triggered location based on the zone is whether network or terminal periodic ground detection target terminal are in, enter or leave specific zone, if then satisfy trigger condition, and the trigger position report.
Network originated triggered location flow process is as shown in Figure 1: wherein, step h, j, l only just carry out when satisfying the area triggering condition, can jump to final step m after carrying out these steps, finish whole position fixing process.
The triggered location flow process of initial terminal is as shown in Figure 2: wherein, steps d, f, h only just carry out when satisfying the area triggering condition, can jump to final step i after carrying out these steps, finish whole position fixing process.
No matter be area triggering positioning that network is initiated or that terminal is initiated, each complete positioning flow is divided into starting stage and location sessions stage.Trigger is that the flow process of location sessions is different in network side and end side.
The area triggering positioning process that trigger is positioned at network is: location-server is after receiving the area triggering positioning request that SUPL agency or target terminal are initiated, the area triggering condition is kept at this locality, and begins periodically to locate according to the triggering time started on the location-server.Location-server is periodically initiated repeatedly positioning flow immediately to target terminal, each after getting access to the exact position of target terminal, compare with the target area of appointment and area triggering type (enter, leave, in inside) in the triggered location task, if satisfy trigger condition, then report the area triggering positioning report to the location initiator.
As shown in Figure 3, be the location sessions flow process of trigger at network side:
When arriving each location during the moment, the location sessions of location-server initiation and terminal has following two kinds of situations:
1. network location request initiating: when the method for calculating and locating that adopts based on terminal, if auxiliary data does not need to upgrade, send SUPLREPORT message to location-server after then target terminal calculating is finished in the location sessions, notify this positioning result, several steps of front are optional; When adopting the method for calculating and locating of assisting based on terminal, location-server compute location result judges whether to satisfy the area triggering condition by location-server, acts on behalf of SUPL Agent if satisfy notice SUPL.
2. terminal location request initiating: when the method for calculating and locating that adopts based on terminal, if auxiliary data does not need to upgrade, send SUPLREPORT message to location-server after then target terminal calculating is finished in the location sessions, notify this positioning result, several steps of front are optional; When adopting, by location-server compute location result and judge whether to satisfy the area triggering condition, act on behalf of SUPL Agent if satisfy notice SUPL based on the auxiliary method for calculating and locating of terminal.
The area triggering positioning process that trigger is positioned at terminal is: target terminal is after receiving the area triggering positioning request that the SUPL agency initiates, the area triggering condition is kept at this locality, if network originated location, then can be with triggered location task notification target terminal.The condition that target terminal is set according to trigger is initiated Location Request to location-server periodically, by with location-server get access to the exact position result alternately after, the target area of preserving with this locality and trigger type (enter, leave, in inside) and compare, if satisfy trigger condition, then target terminal reports area triggering positioning report or the location application to inside to report the area triggering positioning report by location-server to the SUPL agency.
As shown in Figure 4, be the location sessions flow process of trigger in end side:
When arriving each location during the moment, the location sessions of terminal initiation and server is divided into following two kinds of situations:
1. network location request initiating: when the method for calculating and locating that adopts based on terminal, if auxiliary data does not need to upgrade, send SUPLREPORT message to location-server after then target terminal calculating is finished in the location sessions, notify this location to finish, several steps of front are optional; When adopting the method for calculating and locating of assisting based on terminal, server compute location result, calculate the back and report positioning result to target terminal by SUPL REPORT message, target terminal judges whether to satisfy the area triggering condition, if satisfy then trigger by SUPL REPORT message informing location-server zone issue.
2. terminal location request initiating: when the method for calculating and locating that adopts based on terminal, if auxiliary data does not need to upgrade, send SUPLREPORT message to location-server after then target terminal calculating is finished in the location sessions, notify this location to finish, several steps of front are optional; When adopting the method for calculating and locating of assisting based on terminal, server compute location result calculates the back and reports positioning result by SUPL REPORT message to target terminal, and target terminal judges whether to satisfy the area triggering condition, if satisfy the notice internal application.
In above-mentioned each flow process, for area triggering positioning, the time started of its locating periodically and concluding time may all be that the promoter determines good, and all period interval of location are normally determined in the starting stage of area triggering by calculating or consulting by location-server or terminal.Cycle is once just determining no longer change, up to locating end or detecting the area condition that satisfies appointment.If but target terminal is movable in less geographic range in a long time; perhaps target terminal is very lentamente or apace when the target area is approached; the distance that this moment, target terminal moved in a locating periodically interval is very long or very short, adopts the fixing locating periodically exact position of monitoring objective terminal effectively.As seen, existing cycle location to this target terminal is then intelligent inadequately, begins from the location also can cause the bigger waste of network and terminal resource to finishing all the time to trigger location to target terminal at interval with identical locating periodically.
Summary of the invention
The purpose of this invention is to provide a kind of Zone trigger positioning method, begin from the location to finishing all the time to trigger location at interval to overcome in the prior art target terminal with identical locating periodically, cause the shortcoming of network and terminal resource waste, the optimization cycle position fixing process, improve location efficiency, save network and terminal resource.
Another object of the present invention provides a kind of area triggering positioning device, with message processing procedure in the minimizing system, saves system resource, improves the location efficiency to target terminal.
For this reason, the invention provides following technical scheme:
A kind of Zone trigger positioning method said method comprising the steps of:
In the starting stage of area triggering positioning, determine that locating periodically at interval;
In the periodicity position fixing process, calculate the translational speed of target terminal;
According to the translational speed of the target terminal that obtains, obtain distance L and moving direction that target terminal moves in preceding locating periodically interval;
Adjust this locating periodically that is positioned to location next time at interval according to distance L and moving direction;
After adjusting the locating periodically interval, begin next area triggering positioning process.
In the starting stage of area triggering positioning, location-server or target terminal determine that according to the distance between target terminal current location and target area locating periodically at interval.
Alternatively, when location Calculation, obtain the translational speed of target terminal.
Alternatively, calculate the translational speed of target terminal according to the relative movement distance of a target terminal and a fixed target in the given time.
Alternatively, calculate the translational speed of target terminal according to the relative movement distance of target terminal and target area in the given time.
Alternatively, according to the translational speed of the distance calculation target terminal of the target terminal that obtains in preceding twice position fixing process.
Describedly adjust this locating periodically step at interval that is positioned to location next time according to distance L and moving direction and be specially:
Determine this locating periodically that is positioned to location next time at interval according to the comparative result of the precision in the desired location quality of service of distance L and Location Request side and the moving direction of target terminal.
If the moving direction of target terminal deviates from the target area, then increase locating periodically at interval;
If the moving direction head for target zone of target terminal, and distance L is then dwindled locating periodically at interval greater than the required precision in the desired location quality of service of location initiator.
If the moving direction head for target zone of target terminal, and distance L then increases locating periodically at interval less than the required precision in the desired location quality of service of location initiator.
Determine increase or dwindle locating periodically amplitude at interval according to distance L and the difference of locating the required precision in the desired location quality of service of initiator.
Describedly adjust this locating periodically step at interval that is positioned to location next time according to distance L and moving direction and be specially:
Determine this locating periodically that is positioned to location next time at interval according to the comparative result of the relative distance S of distance L and target terminal and target area and the moving direction of target terminal.
If the moving direction of target terminal deviates from the target area, and distance L then increases locating periodically at interval less than relative distance S;
If the moving direction head for target zone of target terminal, and distance L is then dwindled locating periodically at interval more than or equal to relative distance S.
Determine to increase or dwindle the amplitude at locating periodically interval according to the difference of distance L and relative distance S.
When the locating periodically of calculate to need adjusting by target terminal at interval and trigger during at network side, target terminal is located the adjusted locating periodically of initial SUPL POS INIT message informing location-server at interval by secure user plane.
When the locating periodically of calculate to need adjusting by location-server at interval and trigger during in end side, at interval by the adjusted locating periodically of the initial SUPL TRIGGERED of secure user plane orientation triggering INIT message informing target terminal.
Described location-server is specially:
The ownership location-server of described target terminal or the described target terminal visit location-server when roaming state.
A kind of area triggering positioning device comprises:
The positioning strategy negotiation element is used for the parameter of consulting localization method and use in the starting stage at starting stage and target terminal, finishes the negotiations process of triggered location;
The location Calculation unit is used for the result according to described positioning strategy protocol element negotiation, and target terminal is carried out position calculation;
The positioning result notification unit is used for the positioning result that described negotiation location Calculation unit obtains is notified to the location initiator;
It is characterized in that described device also comprises:
Locating periodically is adjustment unit at interval, is used for determining this locating periodically that is positioned to next location at interval according to the translational speed of target terminal, and after arriving the locating periodically interval of determining, triggers described location Calculation unit target terminal is carried out position calculation.
Described locating periodically adjustment unit at interval comprises:
The velocity estimation subelement is used for the translational speed of estimating target terminal;
Distance calculation subelement, the translational speed that is used for the target terminal that obtains according to described velocity estimation subelement calculate target terminal a preceding locating periodically at interval in mobile distance L and moving direction;
Adjust the decision-making subelement, be used for adjusting decision-making according to the distance L that described distance calculation subelement obtains.
Described device further comprises:
The relative distance computing unit, link to each other with described adjustment decision-making subelement, be used to calculate the relative distance S of target terminal and target area, and notify described adjustment decision-making subelement with relative distance S, make it determine this locating periodically that is positioned to location next time at interval according to the comparative result of distance L and relative distance S and the moving direction of target terminal.
By above technical scheme provided by the invention as can be seen, no matter the present invention is for being triggered location process initial terminal or network originated, adopt the area triggering positioning of variable period, in the starting stage of area triggering positioning, location-server or target terminal are determined the locating periodically parameter; In the area triggering positioning process, location-server or target terminal in the periodicity position fixing process according to all period interval of the translational speed adjustment cycle location of target terminal.The area triggering positioning mode of this variable period can be determined the exact position of target terminal more in time: save Internet resources when the target terminal translational speed is very slow effectively, and when the target terminal rate travel is very fast, can in time determine the exact position of target terminal, judge whether it satisfies trigger condition.Utilize the present invention, can be in the triggered location process optimization cycle position fixing process, in time obtain the target terminal position, make and under some application scenarios, can reduce message processing procedure effectively, improve location efficiency, save Internet resources.
Description of drawings
Fig. 1 is a triggered location flow process network originated in the prior art;
Fig. 2 is the triggered location flow process of initial terminal in the prior art;
Fig. 3 be in the prior art trigger in the location sessions flow process of network side;
Fig. 4 be in the prior art trigger in the location sessions flow process of end side;
Fig. 5 is the realization flow figure of the inventive method;
Fig. 6 is the theory diagram of apparatus of the present invention.
Embodiment
Core of the present invention is to adopt the area triggering positioning of variable period, and in the starting stage of area triggering positioning, location-server or target terminal are determined the locating periodically parameter; In the area triggering positioning process, location-server or target terminal in the periodicity position fixing process according to all period interval of the translational speed adjustment cycle location of target terminal; Behind adjusted locating periodically interval, begin next area triggering positioning process.Particularly, in the starting stage of area triggering positioning, can determine that locating periodically at interval according to the distance between target terminal current location and target area; In the area triggering positioning process, when target terminal deviates from the target area lentamente and moves, suitably increase locating periodically at interval; Otherwise,, suitably dwindle locating periodically at interval when target terminal when head for target zone is mobile apace
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
With reference to Fig. 5, Fig. 5 shows the realization flow of the inventive method, may further comprise the steps:
Step 501:, determine that locating periodically at interval in the starting stage of area triggering positioning.
The present technique field personnel know, no matter be area triggering positioning process that network is initiated or that terminal is initiated, when the ownership location-server of target terminal is received Location Request to Location Request side, need consult parameters such as localization method in the starting stage.
In the present invention, as required, can the starting stage consult parameters such as definite zero-time of locating for the first time and locating periodically interval by location-server and target terminal; Also can determine or determine according to the trigger condition that Location Request side proposes by the requesting party by location-server.In order to obtain more to optimize reasonably the zero-time of location each time, can determine that according to the distance between target terminal current location and target area locating periodically at interval by location-server or target terminal.
Step 502: in the periodicity position fixing process, adjust this locating periodically that is positioned to location next time at interval according to the translational speed of target terminal.
When beginning is periodically located, finish position fixing process for the first time.Mention in the prior art in front, area triggering positioning can be initiated by network, also can be initiated by terminal, and trigger can be at network side, also can be in end side, and suitable equally in the present invention.
With reference to the location sessions flow process of trigger shown in Figure 3 at network side, location-server sends SUPL TRIGGERED INIT (secure user plane triggers initial) message to target terminal, the beginning location sessions, target terminal is responded SUPL POS INIT (the secure user plane location is initial) message to location-server.When adopting the method for calculating and locating of assisting based on terminal, the cell information (comprising information such as Mobile Country Code MCC, Mobile Network Code, location area code, cell ID) that in this message, comprises the current place of target terminal, by the location-server position current according to these information calculations target terminals, and judge whether to satisfy the area triggering condition, if satisfy notice SUPL agency; When the method for calculating and locating that adopts based on terminal, then target terminal sends SUPL REPORT (secure user plane report) message to location-server after calculating its position, notifies this positioning result.
Refer again to the location sessions flow process of trigger shown in Figure 4 in end side, target terminal sends SUPL POS INIT message to location-server, the beginning location sessions, when adopting the method for calculating and locating of assisting based on terminal, by the location-server position current according to these information calculations target terminals, calculate the back and report positioning result by SUPL REPORT message to target terminal, target terminal judges whether to satisfy the area triggering condition, if satisfy the notice internal application; When the method for calculating and locating that adopts based on terminal, if auxiliary data does not need to upgrade, then target terminal sends SUPLREPORT message to location-server after calculating its position, notifies this positioning result.Upgrade auxiliary data if desired, then utilize the preceding message of SUPLREPORT step can finish location Calculation and notification procedure.
Location sessions process each among the present invention is same as described above, just after finish the location for the first time, the location parameter that needs the record object terminal, after the locating periodically of deciding through consultation through the starting stage arrives positioning time in cycle for the second time at interval, the translational speed of estimating target terminal is calculated the distance L that target terminal is moved according to this translational speed then in a locating periodically interval.Be the head for target zone or deviate from the target area and decide and dwindle or increase next locating periodically at interval according to this distance L and moving direction.
After server or target terminal obtain secondary position result, if include speed parameter among the result, can use this speed parameter, calculate the distance L that target terminal is moved at interval at a locating periodically; If there is not speed parameter, the translational speed of estimating target terminal in the following manner then:
(1) according to the translational speed of target terminal in the given time with the relative movement distance calculating target terminal of a fixed target.Can in all period interval of one-time positioning, set a time period, be recorded in the distance of this time period internal object terminal and this known fixed target respectively, can obtain translational speed according to this distance and time period of setting in this time period internal object terminal, with this speed as target terminal this locating periodically at interval in the estimated value of translational speed.Especially, the distance of target terminal and this known fixed target in the time of can being recorded in preceding one-time positioning and this location respectively can directly obtain the distance L that target terminal is moved according to these two distance values in a locating periodically interval.
(2) according to the translational speed of the target terminal position estimating target terminal that obtains in preceding twice position fixing process.Equally, also can directly obtain the distance L that target terminal is moved in a locating periodically interval according to this positioning result of twice.
(3) according to the translational speed of target terminal in the given time with the relative movement distance calculating target terminal of target area.Can in all period interval of one-time positioning, set a time period, be recorded in the distance of this time period internal object terminal and target area respectively, can obtain translational speed according to this distance and time period of setting in this time period internal object terminal, with this speed as target terminal this locating periodically at interval in the estimated value of translational speed.Especially, the distance of target terminal and target area in the time of can being recorded in preceding one-time positioning and this location respectively can directly obtain the distance L that target terminal is moved according to these two distance values in a locating periodically interval.
If with the target area is reference point, then can learn that according to the variation of the relative distance of target terminal and target area the moving direction of target terminal deviates from target area or head for target zone; If with known fixed target is reference point, then also need to know the relative position relation of this fixed target and target area, determine that according to the variation of the relative distance of this relation and target terminal and this fixed target the moving direction of target terminal deviates from target area or head for target zone.
When determining the moving direction of target terminal, can come in the following manner to determine:
Such as, be the measurement result of referential with the terrestrial coordinate system in the location technology of GPS (global positioning system) (WGS-84 geocentric coordinate system), be converted into the position in the local Gaussian plane rectangular coordinate system then.Line between twice period measurement position can draw it relatively and the direction of reference axis in coordinate system; In addition, can also adopt the line of previous position and target area and the angle of this position and previous position line to determine the direction that relatively moves.If the angle of the direction of the current location of target terminal and previous position line and previous position and target's center's region point line shows then that greater than 90 degree target terminal deviates from the target area and moves; Otherwise, move if the angle of the direction of the current location of target terminal and previous position line and previous position and target's center's region point line, then shows target terminal head for target zone less than 90 degree.
Then, determine that according to the displacement L and the moving direction of target terminal this is positioned to the locating periodically adjustment strategy at interval of location next time.Specifically can adopt following two kinds to adjust strategy:
(1) determine this locating periodically that is positioned to location next time at interval according to the comparative result of the precision in the desired location quality of service of distance L and Location Request side and the moving direction of target terminal:
If the moving direction of target terminal deviates from the target area, then increase locating periodically at interval;
If the moving direction head for target zone of target terminal, and distance L is greater than the required precision in the desired location quality of service of location initiator, then show in this section period internal object terminal and approach the target area fast, can dwindle locating periodically this moment at interval, increase the location frequency.
If the moving direction head for target zone of target terminal, and distance L then shows in this time period internal object terminal and moves slowly less than the required precision in the initiator desired location quality of service of location, increases the locating periodically interval this moment.
Can determine increase or dwindle locating periodically amplitude at interval according to distance L and the difference of locating the required precision in the desired location quality of service of initiator.
(2) determine this locating periodically that is positioned to location next time at interval according to the comparative result of the relative distance S of distance L and target terminal and target area and the moving direction of target terminal.
If the moving direction of target terminal deviates from the target area, and distance L then shows in this section period internal object terminal and moves slowly much smaller than relative distance S, can increase locating periodically this moment at interval.
If the moving direction head for target zone of target terminal, and distance L shows then in this section period internal object terminal and approaches the target area fast that at this moment, can dwindle locating periodically at interval, frequency is located in increase more than or equal to relative distance S.
Equally, can determine the amplitude that locating periodically dwindles at interval or increases according to the difference of distance L and relative distance S.
Step 503: behind adjusted locating periodically interval, begin next area triggering positioning process.
In the present invention, can need the locating periodically interval of adjustment, also can calculate the locating periodically interval that to adjust by location-server by target terminal calculating.When trigger condition and computing cycle function at interval need notify the other side's locating periodically to change during not at same entity.
If calculate the locating periodically interval that needs adjustment, then behind the locating periodically interval that target terminal is determined to need to adjust, can utilize the adjusted locating periodically of SLPL POS INIT message informing location-server interval by target terminal.Such as, when the locating periodically of calculate to need adjusting by target terminal at interval and trigger during at network side, need target terminal to notify location-server at interval with adjusted locating periodically.
Existing SUPL POS INIT message is expanded, expanded a parameter and represent the amended locating periodically spacing value of target terminal.As shown in table 1 below:
Table 1:
| Parameter | Optional state | Describe |
| SET Capabilities | M | Terminal capabilities |
| Requested | O | The request auxiliary data |
| Assistance Data | ||
| Location ID | M | The cell information of terminal |
| Position | O | The position of terminal |
| SUPLPOS | O | The SUPL POS message that is comprised |
| Ver | CV | The hash value that needs a SUPL INIT of terminal calculating under the situation that network is initiated |
| Period Data | O | Revise the back cycle parameter |
If calculate the locating periodically interval that needs adjustment, then behind the locating periodically interval that server is determined to need to adjust, can utilize the adjusted locating periodically of SUPLTRIGGERED INIT message informing target terminal interval by server.Such as, when the locating periodically of calculate to need adjusting by location-server at interval and trigger during in end side, location-server needs the adjusted locating periodically of notification target terminal at interval.
Equally, can expand, expand a Period Data parameter and represent the amended locating periodically spacing value of target terminal existing SUPL TRIGGERED INIT message.
Concrete localization method can adopt the localization method of cell ID, also can adopt GPS, EOTD (Enhanced Observed Time Difference, the enhancement mode observed time difference) or OTDOA localization methods such as (Observed Time Difference ofArrival, the observable time of advent is poor).
Can calculate the position (SET-Based mode) of self by the effective auxiliary data of target terminal basis, and position result is returned to location-server; Perhaps calculate target terminal position according to the position measurement report of receiving by location-server.
Determine the time started of cycle location for the first time for convenience, can the target area in the locating request message of Location Request side's transmission be converted to cell list by location-server.For the periodicity location that network is initiated, at positioning stage, the secure user plane location that location-server sends according to target terminal is initiated SUPLPOS INIT message and is obtained the cell information at the current place of target terminal; Determine the time started of cycle location for the first time by location-server according to the sub-district at the current place of target terminal and the cell list information of target area then.For the periodicity location that terminal is initiated, in the starting stage, location-server sends to target terminal with the cell list of target area; Determine the time started of cycle location for the first time by the target area according to the sub-district at its current place and the cell list information of described target area then.
By foregoing description as seen, when the target terminal translational speed when very fast or slow, can move very long or very short distance at interval at a locating periodically, the present invention comes the locating periodically interval of adjustment region triggered location according to the translational speed of target terminal.When the target terminal translational speed is very fast, suitably dwindle locating periodically at interval, can determine target terminal position more in time, judge whether it satisfies trigger condition; When the target terminal translational speed is very little, suitably increase locating periodically at interval, can save Internet resources effectively.
Because the mobility of target terminal, when target terminal was in roaming state, said process need be finished jointly by the H-SLP (ownership location-server) and the V-SLP (visit location-server) of target terminal.Under the situation that network is initiated, the SUPL agency initiates Location Request to R-SLP (request location-server), R-SLP finds the ownership H-SLP of target terminal, whether H-SLP searches target terminal in roaming, if be in roaming state, then the corresponding V-SLP of notice determines parameters such as localization method by the session negotiation between V-SLP, H-SLP and the target terminal, triggers the location to target terminal when satisfying trigger condition.Finish whole position fixing process when locating periodically finishes or when satisfying area condition.Under the situation that terminal is initiated, terminal is initiated Location Request to its ownership SLP, H-SLP searches routing iinformation, if be in roaming state, then notify corresponding V-SLP, determine parameters such as localization method by the session negotiation between V-SLP, H-SLP and the target terminal, when satisfying trigger condition, trigger location target terminal.Finish whole position fixing process when locating periodically finishes or when satisfying area condition.
Each position fixing process can be finished by H-SLP, also can be finished by V-SLP, and specific implementation flow process and shown in Figure 5 similar does not repeat them here.
With reference to Fig. 6, Fig. 6 is the theory diagram of apparatus of the present invention:
This device comprises: positioning strategy negotiation element S1, location Calculation cell S 2, positioning result notification unit S3, locating periodically be adjustment unit S4 at interval.
In the starting stage of cycle position fixing process, positioning strategy negotiation element S1 and target terminal are consulted the parameter of localization method and use, finish the negotiations process of triggered location.Network originated periodicity position fixing process sends SUPL INIT (SUPL initialization) message by positioning strategy negotiation element S1 to target terminal, and notice is carried out triggered location; Target terminal is responded SUPL TRIGGERED START (SUPL triggers startup) message, positioning strategy negotiation element S1 answers SUPL TRIGGEREDRESPONSE (SUPL triggered response) message authentication to target terminal then, sends positioning confirmation message to SUPL Agent simultaneously.In this process, finish the negotiation of some parameters (such as, localization method etc.), enter the position fixing process of back then.The periodicity position fixing process of initial terminal is used the position fixing process of initiating at oneself by the MLS on the target terminal.Send SUPL TRIGGEREDSTART (SUPL triggers startup) message by target terminal to positioning strategy negotiation element S1, positioning strategy negotiation element S1 answers SUPL TRIGGERED RESPONSE (SUPL triggered response) message authentication to target terminal then.In this process, finish the negotiation of some parameters, enter the position fixing process of back then.
After the negotiations process of triggered location is finished, arrive the location during moment, location Calculation cell S 2 is calculated target terminal position, finishes position fixing process for the first time.Simultaneously, locating periodically adjustment unit S4 is at interval determined this locating periodically that is positioned to next location at interval according to the translational speed of target terminal, and after arriving the locating periodically interval of determining, triggered location computing unit S2 carries out position calculation to target terminal.
For locating periodically interval adjustment unit S4 is correctly made a strategic decision, velocity estimation subelement S41, distance calculation subelement S42 can be set in this unit and adjust decision-making subelement S43.
Wherein, velocity estimation subelement S41 is used for the translational speed of estimating target terminal.Mention in the description to the inventive method in front, can calculate the translational speed of target terminal according to the relative movement distance of a target terminal and a fixed target in the given time, perhaps according to the translational speed of the target terminal position estimating target terminal that obtains in preceding twice position fixing process; Can also be according to the translational speed of target terminal in the given time with the relative movement distance calculating target terminal of target area.Do not repeat them here.
After obtaining the translational speed of target terminal, calculate the distance L that target terminal moves by distance calculation subelement S42 according to this velocity estimation value in preceding locating periodically interval, and determine its moving direction.Adjust decision-making by adjusting decision-making subelement S43 according to distance L then.
Adjusting the precision that decision-making subelement S43 can adjust the distance in the desired location quality of service of L and Location Request side compares, determine this locating periodically that is positioned to location next time at interval according to the moving direction of comparative result and target terminal: if the moving direction of target terminal deviates from the target area, and distance L is less than the required precision in the desired location quality of service in Location Request side, then show in this time period internal object terminal and move slowly, can increase locating periodically this moment at interval, locating periodically increase degree at interval can be determined according to the translational speed size of this terminal.If the moving direction head for target zone of target terminal, and distance L is much larger than the required precision of locating in the desired location quality of service of initiator, then show in this section period internal object terminal and approach the target area fast, can dwindle locating periodically this moment at interval, increase the location frequency.Equally, the locating periodically degree of dwindling at interval can be determined according to the translational speed size of this terminal.
In addition, a relative distance computing unit S5 can also be set, as shown in Figure 6 in this device.This relative distance computing unit S5 links to each other with adjustment decision-making subelement S43, be used to calculate the relative distance S of target terminal and target area, and, make it determine this locating periodically that is positioned to location next time at interval according to the comparative result of distance L and relative distance S and the moving direction of target terminal with relative distance S notice adjustment decision-making subelement.If the moving direction of target terminal deviates from the target area, and distance L is much smaller than relative distance S, show then in this section period internal object terminal and move slowly that can increase locating periodically this moment at interval, locating periodically increase degree at interval can be determined according to the translational speed of this terminal.If the moving direction head for target zone of target terminal, and distance L shows then in this section period internal object terminal and approaches the target area fast that at this moment, can dwindle locating periodically at interval, frequency is located in increase more than or equal to relative distance S.Equally, the locating periodically degree of dwindling at interval can be determined according to the translational speed size of this terminal.
After each cycle, finished the location, adjust decision-making subelement S43 and determine that next locating periodically at interval.After through this interval, adjust decision-making subelement S43 triggered location computing unit S2 target terminal is carried out position calculation.
Apparatus of the present invention can be integrated on the server.At positioning stage, the terminal that is positioned is notified this device by SUPLPOS INIT message with the current location sign of oneself.Like this, arrive the location after the moment, just can calculate target terminal position, and judge whether to satisfy trigger condition according to the triggering type of appointment in the zone location trigger request by location Calculation cell S 2.When not satisfying trigger condition, notice positioning result notification unit S3 finishes this location; When failed call obtained target terminal position in satisfying trigger condition and described zone location trigger request, notice positioning result notification unit S3 directly returned the triggered location report to the location initiator; When in satisfying trigger condition and described zone location trigger request, requiring to obtain target terminal position, obtain positioning result.Then, target terminal position information is sent to the SUPL agency.Simultaneously, adjustment unit S4 adjusts locating periodically at interval according to the translational speed of target terminal by the locating periodically interval, if adopt the SET-Based mode, locating periodically adjustment unit S4 at interval also needs adjusted locating periodically interval notification target terminal, the effective auxiliary data that is provided according to location Calculation cell S 2 by target terminal calculates the position of self then, and the result is returned to location Calculation cell S 2; If adopt the SET-Assisted mode, then directly calculate target terminal position according to the target terminal position measurement report of receiving by location Calculation cell S 2.
Apparatus of the present invention can also be integrated on the terminal, specific implementation and foregoing description are similar, do not repeat them here.
Particularly, the different units in this device can also be disperseed to be integrated on server and the terminal.Such as, adjustment unit S4 is integrated on the terminal with the locating periodically interval, and other unit are integrated on the server.Like this, the adjustment at interval of each locating periodically is finished by target terminal.If adopt the SET-Based mode, then the effective auxiliary data that is provided according to location Calculation cell S 2 by target terminal calculates the position of self; If adopt the SET-Assisted mode, then locating periodically interval adjustment unit S4 also needs to notify location-server at interval with adjusted locating periodically, after arriving blanking time, directly calculate target terminal position according to the target terminal position measurement report of receiving by location Calculation cell S 2.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (18)
1, a kind of Zone trigger positioning method is characterized in that, said method comprising the steps of:
In the starting stage of area triggering positioning, determine that locating periodically at interval;
In the periodicity position fixing process, calculate the translational speed of target terminal;
According to the translational speed of the target terminal that obtains, obtain distance L and moving direction that target terminal moves in preceding locating periodically interval;
Adjust this locating periodically that is positioned to location next time at interval according to distance L and moving direction;
After adjusting the locating periodically interval, begin next area triggering positioning process.
2, method according to claim 1 is characterized in that,
In the starting stage of area triggering positioning, location-server or target terminal determine that according to the distance between target terminal current location and target area locating periodically at interval.
3, method according to claim 1 is characterized in that, calculates the translational speed of target terminal when the location.
4, method according to claim 1 is characterized in that, calculates the translational speed of target terminal according to the relative movement distance of a target terminal and a fixed target in the given time.
5, method according to claim 1 is characterized in that, calculates the translational speed of target terminal according to the relative movement distance of target terminal and target area in the given time.
6, method according to claim 1 is characterized in that, according to the translational speed of the distance calculation target terminal of the target terminal that obtains in preceding twice position fixing process.
7, method according to claim 1 is characterized in that, describedly adjusts this locating periodically step at interval that is positioned to location next time according to distance L and moving direction and is specially:
Determine this locating periodically that is positioned to location next time at interval according to the comparative result of the precision in the desired location quality of service of distance L and Location Request side and the moving direction of target terminal.
8, method according to claim 7 is characterized in that,
If the moving direction of target terminal deviates from the target area, then increase locating periodically at interval;
If the moving direction head for target zone of target terminal, and distance L is then dwindled locating periodically at interval greater than the required precision in the desired location quality of service of location initiator.
If the moving direction head for target zone of target terminal, and distance L then increases locating periodically at interval less than the required precision in the desired location quality of service of location initiator.
9, method according to claim 8 is characterized in that,
Determine increase or dwindle locating periodically amplitude at interval according to distance L and the difference of locating the required precision in the desired location quality of service of initiator.
10, method according to claim 1 is characterized in that, describedly adjusts this locating periodically step at interval that is positioned to location next time according to distance L and moving direction and is specially:
Determine this locating periodically that is positioned to location next time at interval according to the comparative result of the relative distance S of distance L and target terminal and target area and the moving direction of target terminal.
11, method according to claim 10 is characterized in that,
If the moving direction of target terminal deviates from the target area, and distance L then increases locating periodically at interval less than relative distance S;
If the moving direction head for target zone of target terminal, and distance L is then dwindled locating periodically at interval more than or equal to relative distance S.
12, method according to claim 11 is characterized in that,
Determine to increase or dwindle the amplitude at locating periodically interval according to the difference of distance L and relative distance S.
13, method according to claim 1 is characterized in that,
When the locating periodically of calculate to need adjusting by target terminal at interval and trigger during at network side, target terminal is located the adjusted locating periodically of initial SUPL POS INIT message informing location-server at interval by secure user plane.
14, method according to claim 1 is characterized in that,
When the locating periodically of calculate to need adjusting by location-server at interval and trigger during in end side, at interval by the adjusted locating periodically of the initial SUPL TRIGGERED of secure user plane orientation triggering INIT message informing target terminal.
15, according to claim 2 or 13 or 14 each described methods, it is characterized in that described location-server is specially:
The ownership location-server of described target terminal or the described target terminal visit location-server when roaming state.
16, a kind of area triggering positioning device comprises:
The positioning strategy negotiation element is used for the parameter of consulting localization method and use in the starting stage at starting stage and target terminal, finishes the negotiations process of triggered location;
The location Calculation unit is used for the result according to described positioning strategy negotiation element negotiation, and target terminal is carried out position calculation;
The positioning result notification unit is used for the positioning result that described location negotiation computing unit obtains is notified to the location initiator;
It is characterized in that described device also comprises:
Locating periodically is adjustment unit at interval, is used for determining this locating periodically that is positioned to next location at interval according to the translational speed of target terminal, and after arriving the locating periodically interval of determining, triggers described location Calculation unit target terminal is carried out position calculation.
17, device according to claim 16 is characterized in that, described locating periodically adjustment unit at interval comprises:
The velocity estimation subelement is used for the translational speed of estimating target terminal;
Distance calculation subelement, the translational speed that is used for the target terminal that obtains according to described velocity estimation subelement calculate target terminal a preceding locating periodically at interval in mobile distance L and moving direction;
Adjust the decision-making subelement, be used for adjusting decision-making according to the distance L that described distance calculation subelement obtains.
18, device according to claim 17 is characterized in that, described device further comprises:
The relative distance computing unit, link to each other with described adjustment decision-making subelement, be used to calculate the relative distance S of target terminal and target area, and notify described adjustment decision-making subelement with relative distance S, make it determine this locating periodically that is positioned to location next time at interval according to the comparative result of distance L and relative distance S and the moving direction of target terminal.
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