CN1984476A - Method for positioning and processing mobile station - Google Patents
Method for positioning and processing mobile station Download PDFInfo
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- CN1984476A CN1984476A CNA2006100788161A CN200610078816A CN1984476A CN 1984476 A CN1984476 A CN 1984476A CN A2006100788161 A CNA2006100788161 A CN A2006100788161A CN 200610078816 A CN200610078816 A CN 200610078816A CN 1984476 A CN1984476 A CN 1984476A
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Abstract
The method comprises: according to the location request information of core network, location capability of subscriber equipment and information about cell type, the radio network control (RNC) selects an initial location method to make location process; if satisfying the location requirement, then ending the location process; if location process failures, according to the location capability of user and the type of accessed cell, making a location degradation process; after the location method is selected, using the selected location method to locate the mobile station.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of method for positioning and processing mobile station.
Background technology
In WCDMA (Wideband Code Division Multiple Access (WCDMA)) mobile communication system, have the localization method of three kinds of standards: AGPS (the GPS localization method of network assistance), OTDOA (observed time difference) and CELLID (cell ID).The positioning accuracy of each localization method has nothing in common with each other, and in general, the positioning accuracy of AGPS is the highest, and OTDOA takes second place, and the positioning accuracy of CELLID is the poorest.
But, at different geographical environments, as: outdoor open environment, the outdoor environment, indoor etc. that blocks, the positioning accuracy of each localization method is widely different.For example: under outdoor open environment, the positioning accuracy of AGPS method can reach in 10 meters, and the positioning accuracy of OTDOA method can reach about 80 meters, and the positioning accuracy of CELLID method only can reach about 200 meters.But, to block under environment or the indoor environment outdoor, the positioning accuracy of AGPS method will seriously descend, and position error can deteriorate into more than 300 meters, even can fail and cause AGPS to locate owing to search for less than enough satellites.And because the cell coverage area under this situation is generally all smaller, the positioning accuracy of CELLID method can reach in 100 meters on the contrary; The positioning accuracy of OTDOA method under this environment, generally then can only reach about 150 meters even poorer.
In addition, difference positioning time of each localization method is very big.The positioning time of AGPS method is greatly between 10～30 seconds; The positioning time of OTDOA method is greatly between 0.5～2 second; The positioning time of CELLID method is greatly between 0.1～0.5 second.
The WCDMA network is mainly finished by RNC (radio network controller) the positioning action of UE, and RNC is the control core of WCDMA wireless access network, also is the mobile position estimation control centre in the WCDMA mobile communication system.RNC receives the Location Request to certain UE from the WCDMA core net, starts the position fixing process to this UE then, and last, RNC reports to the core net restoring to normal position.
A kind of RNC localization method of prior art is: the operation quality requirement in the Location Request that RNC does not issue core net is segmented consideration, no matter how many location response time requirement in the Location Request and horizontal location required precisions be, RNC unifies the highest localization method of service precision and positions.For example: if UE supports the AGPS localization method, then RNC just utilizes the AGPS localization method to position processing.
The shortcoming that such scheme exists is: the location response time requirement in the Location Request that core net issues is response fast, simultaneously, not high to the horizontal location required precision, so, RNC can utilize the method for CELLID to position processing this moment fully, so that can under the situation that satisfies the horizontal location precision, also can satisfy simultaneously the location response time requirement in the Location Request.And in the existing scheme, utilize the AGPS method to carry out localization process under the said circumstances, may not reach the location response time requirement that core net is asked.And RNC is not segmented consideration to the residing sub-district of travelling carriage yet, no matter what type the residing sub-district of travelling carriage to be positioned is, RNC unifies the highest localization method of service precision and positions.Such as: travelling carriage to be positioned is under the indoor environment, and RNC also utilizes the AGPS method to position, and therefore can cause AGPS location failure because travelling carriage can not search enough satellite-signals this moment.
Another kind of prior art is: the parallel location survey that carries out three kinds of methods of RNC, after RNC received positioning measurement result respectively, the selection and the location Calculation that position method were again handled.In this scheme, RNC just can position calculating after must waiting until that at every turn the longest AGPS location survey of Measuring Time has the result, under the not high situation of the horizontal location precision of core net, has wasted positioning time.The another one shortcoming of this scheme is: in all successes of CELLID, OTDOA location survey, but, if UE is after having spent a period of time, returned the failure of AGPS location survey, then this moment, RNC reported the positioning result of core net, for the UE under the motion conditions, just can not react the position at the current actual place of UE, the positioning result before the just UE that RNC reports.
Summary of the invention
The object of the present invention is to provide a kind of processing method of can be accurately, in real time travelling carriage being positioned.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method for positioning and processing mobile station comprises:
A, radio network controller select the initial alignment method to position processing according to the positioning request information and the user profile of core net, if satisfy positioning requirements, then finish localization process;
If the failure of B localization process then positions degradation according to user profile and handles;
After C, localization method are determined, travelling carriage is positioned according to described definite localization method.
Described user profile comprises: the cell type information that subscriber equipment stationkeeping ability and subscriber equipment are inserted.
Described localization method comprises: the GPS localization method AGPS of network assistance, observed time difference localization method OTDOA, cell-ID positioning method CELLID.
The judgement successively of described selection initial alignment method is in proper order:
A1, at first radio network controller judges whether the location response time asked be whether whether quick response, horizontal location precision be indoor environment greater than the coverage radius of cell that subscriber equipment inserted, described cell environment, if satisfy above-mentioned condition, then selecting the CELLID localization method is the initial alignment method; Otherwise, carry out
A2, radio network controller judge that whether cell environment that whether stationkeeping ability of subscriber equipment support that AGPS localization method, subscriber equipment inserted is whether the horizontal location precision of outdoor open environment, core net is less than AGPS method prescribed limit, if satisfy above-mentioned condition, then selecting the AGPS localization method is the initial alignment method; Otherwise, carry out
A3, radio network controller judge whether subscriber equipment supports OTDOA localization method, core net horizontal location precision whether less than OTDOA method prescribed limit, if satisfy above-mentioned condition, then selecting the OTDOA localization method is the initial alignment method; Otherwise,
A4, selection CELLID localization method are the initial alignment method.
During described selection initial alignment method, judge the applicability of any two kinds of methods according to described order.
If current use be the CELLID localization method, then described method further comprises:
Judge whether subscriber equipment supports to receive and dispatch time difference measurements,
If support, then radio network controller issues the request of subscriber equipment transmitting-receiving time difference measurements and gives subscriber equipment, and issue the request of two-way travel time RTT location survey and give the base station, radio network controller positions calculating according to the correct measurement result that base station and subscriber equipment return;
If do not support, perhaps base station or subscriber equipment do not return correct measurement result, then directly with the position of center of housing estate as mobile station location result.
Described transmitting-receiving time difference measurements comprises: transmitting-receiving time difference Class1 is measured or transmitting-receiving time difference type 2 is measured.
Described radio network controller is handed down to the transmitting-receiving time difference measurements of the transmitting-receiving time difference measurements of subscriber equipment for all sub-districts in this subscriber equipment Active Set.
The RTT that the RTT that described radio network controller is handed down to the base station is measured as all sub-districts in this subscriber equipment Active Set measures.
If current use be the AGPS localization method, then described location degradation processing method further comprises:
Judge whether the subscriber equipment stationkeeping ability supports the OTDOA localization method, if support that then current localization method is set to OTDOA and positions processing; Otherwise,
Be set to the CELLID localization method and position processing.
If current use be the OTDOA localization method, then described location degradation processing method further comprises:
Current localization method is set to CELLID and positions processing.
Described method further comprises:
If the localization process success, then base station controller returns to core net with positioning result.As seen from the above technical solution provided by the invention, the present invention has realized that RNC can both be met the positioning result that core net is asked most at every turn, simultaneously, can also guarantee that positioning time is short as far as possible.
Description of drawings
Fig. 1 is a kind of embodiment operational flowchart of the method for the invention.
Embodiment
Core concept of the present invention has provided a kind of method for positioning and processing mobile station, RNC is at first according to the positioning request information of core net, the stationkeeping ability of UE, the information such as cell type that UE inserted, select the initial alignment method, if location failure, RNC utilizes the localization method degradation to handle, stationkeeping ability according to UE, the information such as cell type that UE inserted, localization method after selecting to demote carries out mobile position estimation to be handled, guaranteed that RNC can both be met the positioning result that core net is asked most at every turn, simultaneously, can also guarantee that positioning time is short as far as possible.
The invention provides a kind of method for positioning and processing mobile station, a kind of embodiment operating process of described method comprises the steps: as shown in Figure 1
Step 101:RNC receives the Location Request that core net sends, and judges at first whether the location response time of this request is quick response, and whether the horizontal location precision is greater than coverage radius of cell;
At first judging this condition, is because the location response time requirement in the Location Request that core net issues is response fast, simultaneously, when not high, RNC can determine to utilize the method location of CELLID, so that respond the Location Request of core net fast to the horizontal location required precision;
Step 102: if the judged result of step 101 is for being, be that location response time requirement in the Location Request that issues of core net is response fast, simultaneously, not high to the horizontal location required precision, then RNC selects to utilize the method for CELLID to position processing at this moment, and the CELLID method is set is the initial alignment method, so that respond the Location Request of core net fast;
Step 103: if current localization method is CELLID, then RNC judges whether UE supports UE transmitting-receiving time difference measurements;
Described transmitting-receiving time difference measurements can be measured or 2 measurements of transmitting-receiving time difference type for transmitting-receiving time difference Class1;
Step 104: if UE does not support UE transmitting-receiving time difference measurements, then RNC directly with the position of center of housing estate, as mobile station location result, reports core net, and flow process finishes;
Step 105: if UE supports UE transmitting-receiving time difference measurements, then RNC issues the request of UE transmitting-receiving time difference measurements to UE, and issue the request of RTT (two-way travel time) location survey to NodeB, if NodeB and UE have all returned the correct positioning measurement result, after then RNC positions calculating, positioning result is returned to core net, and flow process finishes;
Otherwise RNC directly with the position of center of housing estate, as mobile station location result, reports core net, and flow process finishes;
Described RNC is handed down to the UE transmitting-receiving time difference measurements of UE, is the UE transmitting-receiving time difference measurements of all sub-districts in this UE Active Set; The RTT that RNC is handed down to NodeB measures, and is the RTT measurement of all sub-districts in this UE Active Set;
Step 106: if the judged result of step 101 is for denying, be that location response time requirement in the Location Request that issues of core net is non-quick response, perhaps core net is higher to the horizontal location required precision, for example require the covering radius of horizontal location precision less than the sub-district that travelling carriage inserted, then RNC judges whether the environmental form of the sub-district that UE inserts is indoor environment;
The environmental form of the sub-district that UE inserted comprises following three kinds of selections: indoor environment, outdoor open environment and the outdoor environment that blocks.Typical indoor environment is: the sub-district of indoor covering, the sub-district of subway the inside or the inside, tunnel etc.; The typical outdoor environment that blocks is: the city building is than the sub-district of comparatively dense etc.; Typical outdoor open environment is: open ground, suburb, wide rural area etc.;
If indoor environment, because UE adopts the AGPS method can not search enough satellites basically or adopts the OTDOA method can not search enough neighbor cells, so, under this environment, just there is no need to attempt carrying out the localization process of AGPS or OTDOA method, RNC selection this moment CELLID is the initial alignment method, and utilizes selected initial alignment method to carry out mobile position estimation and handle;
Step 107: if the environmental form of the sub-district that UE inserts is determined in the judgement of step 106 is non-indoor environment, then RNC judges whether the stationkeeping ability of UE supports the AGPS localization method, and whether the environmental form of judging the sub-district that UE inserts is outdoor open environment, and whether the horizontal location precision of judging core net less than M rice, and the span of M is 150～250 meters;
Step 108: if the judged result of step 107 is for being, then RNC selection AGPS is the initial alignment method, and utilize selected initial alignment method to carry out mobile position estimation and handle, RNC issues the location survey request of AGPS type to UE, if UE has returned correct measurement result, after then RNC utilizes this measurement result to position calculating, positioning result is returned to core net, flow process finishes;
The location survey request type of the AGPS type that RNC issues to UE both can be the pseudo range measurement of gps satellite, and it is corresponding to based on network station-keeping mode; Also can be that position result is measured, it be corresponding to the station-keeping mode based on travelling carriage;
Step 109: if utilize the failure of AGPS localization method location, or judged result is not in the step 107, then RNC judges whether the stationkeeping ability of UE supports OTDOA, and whether the horizontal location precision of judging core net less than N rice, and the span of N is 300～400 meters;
Step 110: if support that then the OTDOA localization method is set to the initial alignment method; And utilize selected initial alignment method to carry out mobile position estimation and handle;
If current localization method is OTDOA, then RNC if UE has returned correct measurement result, after then RNC utilizes this measurement result to position calculating, returns to core net with positioning result, the flow process end to the location survey request that UE issues the OTDOA type;
Otherwise, positioning the method degradation and handle, current localization method is set to CELLID, and changes step 103 over to; Otherwise, directly current localization method is chosen as CELLID, and changes step 103 over to;
The location survey request type of the OTDOA type that described RNC issues to UE both can be the observed time difference measurements between reference cell and several neighbor cells, and it is corresponding to based on network station-keeping mode; Also can be to measure corresponding to position result based on the station-keeping mode of travelling carriage.
If the judged result in the step 109 is not, then RNC selection CELLID is the initial alignment method, and utilizes selected initial alignment method to carry out mobile position estimation and handle, and goes to step 103.
When selecting the initial alignment method, judge and select that the judgement order of two kinds of methods of its combination in any is still according to the above-mentioned order of saying in can two kinds in described three kinds of methods successively according to the method described above.
In sum, the present invention has realized that RNC can both be met the positioning result that core net is asked most at every turn, simultaneously, can also guarantee that positioning time is short as far as possible.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1, a kind of method for positioning and processing mobile station is characterized in that, comprising:
A, radio network controller select the initial alignment method to position processing according to the positioning request information and the user profile of core net, if satisfy positioning requirements, then finish localization process;
If the failure of B localization process then positions degradation according to user profile and handles;
After C, localization method are determined, travelling carriage is positioned according to described definite localization method.
2, a kind of method for positioning and processing mobile station as claimed in claim 1 is characterized in that, described user profile comprises: the cell type information that subscriber equipment stationkeeping ability and subscriber equipment are inserted.
3, a kind of method for positioning and processing mobile station as claimed in claim 1 is characterized in that, described localization method comprises: the GPS localization method AGPS of network assistance, observed time difference localization method OTDOA, cell-ID positioning method CELLID.
4, a kind of method for positioning and processing mobile station as claimed in claim 3 is characterized in that, the judgement successively of described selection initial alignment method is in proper order:
A1, at first radio network controller judges whether the location response time asked be whether whether quick response, horizontal location precision be indoor environment greater than the coverage radius of cell that subscriber equipment inserted, described cell environment, if satisfy above-mentioned condition, then selecting the CELLID localization method is the initial alignment method; Otherwise, carry out
A2, radio network controller judge that whether cell environment that whether stationkeeping ability of subscriber equipment support that AGPS localization method, subscriber equipment inserted is whether the horizontal location precision of outdoor open environment, core net is less than AGPS method prescribed limit, if satisfy above-mentioned condition, then selecting the AGPS localization method is the initial alignment method; Otherwise, carry out
A3, radio network controller judge whether subscriber equipment supports OTDOA localization method, core net horizontal location precision whether less than OTDOA method prescribed limit, if satisfy above-mentioned condition, then selecting the OTDOA localization method is the initial alignment method; Otherwise,
A4, selection CELLID localization method are the initial alignment method.
5, a kind of method for positioning and processing mobile station as claimed in claim 4 is characterized in that, during described selection initial alignment method, judges the applicability of any two kinds of methods according to described order.
6, a kind of method for positioning and processing mobile station as claimed in claim 5 is characterized in that, if current use be the CELLID localization method, then described method further comprises:
Judge whether subscriber equipment supports to receive and dispatch time difference measurements,
If support, then radio network controller issues the request of subscriber equipment transmitting-receiving time difference measurements and gives subscriber equipment, and issue the request of two-way travel time RTT location survey and give the base station, radio network controller positions calculating according to the correct measurement result that base station and subscriber equipment return;
If do not support, perhaps base station or subscriber equipment do not return correct measurement result, then directly with the position of center of housing estate as mobile station location result.
7, a kind of method for positioning and processing mobile station as claimed in claim 6 is characterized in that, described transmitting-receiving time difference measurements comprises: transmitting-receiving time difference Class1 is measured or transmitting-receiving time difference type 2 is measured.
8, a kind of method for positioning and processing mobile station as claimed in claim 6 is characterized in that, described radio network controller is handed down to the transmitting-receiving time difference measurements of the transmitting-receiving time difference measurements of subscriber equipment for all sub-districts in this subscriber equipment Active Set.
9, a kind of method for positioning and processing mobile station as claimed in claim 6 is characterized in that, the RTT that the RTT that described radio network controller is handed down to the base station is measured as all sub-districts in this subscriber equipment Active Set measures.
10, a kind of method for positioning and processing mobile station as claimed in claim 3 is characterized in that, if current use be the AGPS localization method, then described location degradation processing method further comprises:
Judge whether the subscriber equipment stationkeeping ability supports the OTDOA localization method, if support that then current localization method is set to OTDOA and positions processing; Otherwise,
Be set to the CELLID localization method and position processing.
11, a kind of method for positioning and processing mobile station as claimed in claim 3 is characterized in that, if current use be the OTDOA localization method, then described location degradation processing method further comprises:
Current localization method is set to CELLID and positions processing.
12, as each described a kind of method for positioning and processing mobile station in the claim 1 to 11, it is characterized in that described method further comprises:
If the localization process success, then base station controller returns to core net with positioning result.
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