CN100486356C - Method for positioning and processing mobile station - Google Patents

Method for positioning and processing mobile station Download PDF

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CN100486356C
CN100486356C CNB2006100788161A CN200610078816A CN100486356C CN 100486356 C CN100486356 C CN 100486356C CN B2006100788161 A CNB2006100788161 A CN B2006100788161A CN 200610078816 A CN200610078816 A CN 200610078816A CN 100486356 C CN100486356 C CN 100486356C
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positioning
mobile station
location
processing
otdoa
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CN1984476A (en
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徐斌
任学亮
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Huawei Technologies Co Ltd
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Abstract

本发明涉及通讯技术领域中一种移动台定位处理方法，无线网络控制器根据核心网的定位请求信息及移动台定位能力、所接入的小区类型信息，选择初始定位方法进行定位处理，如果满足定位要求，则结束定位处理；如果定位处理失败，则根据用户的定位能力、所接入的小区类型进行定位降级处理，定位方法确定后，根据所述确定的定位方法对移动台进行定位。本发明实现了RNC每次都能够得到最符合核心网所请求的定位结果，同时，还能保证定位时间尽可能短。

The present invention relates to a positioning processing method of a mobile station in the field of communication technology. A wireless network controller selects an initial positioning method for positioning processing according to the positioning request information of the core network, the positioning capability of the mobile station, and the type information of the accessed cell. If the location request is required, the location processing is ended; if the location processing fails, the location downgrade processing is performed according to the user's location capability and the type of cell accessed, and after the location method is determined, the mobile station is positioned according to the determined location method. The invention realizes that the RNC can obtain the positioning result most in line with the request of the core network every time, and at the same time, it can also ensure that the positioning time is as short as possible.

Description

A kind of method for positioning and processing mobile station
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, if but 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, use the localization method after the location degradation is handled that travelling carriage is positioned.
Described user profile comprises: mobile position estimation ability and the cell type information that travelling carriage 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 travelling carriage inserted, described cell environment, if the location response time of being asked is quick response, horizontal location precision is that coverage radius of cell and the cell environment that inserts greater than travelling carriage is the city environment, and 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 travelling carriage support that AGPS localization method, travelling carriage inserted is whether the horizontal location precision of outdoor open environment, core net is less than AGPS method prescribed limit, if the stationkeeping ability of travelling carriage is a cell environment of supporting AGPS localization method, travelling carriage to be inserted be the horizontal location precision of outdoor open environment and core net less than AGPS method prescribed limit, then selecting the AGPS localization method is the initial alignment method; Otherwise, carry out
A3, radio network controller judge whether travelling carriage supports OTDOA localization method, core net horizontal location precision whether less than OTDOA method prescribed limit, if travelling carriage supports OTDOA localization method and core net horizontal location precision less than OTDOA method prescribed limit, 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 for positioning and processing mobile station further comprises:
Judge whether travelling carriage supports to receive and dispatch time difference measurements,
If support, then radio network controller issues the request of travelling carriage transmitting-receiving time difference measurements and gives travelling carriage, 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 travelling carriage return;
If do not support, perhaps base station or travelling carriage do not return correct measurement result, then directly with the position of center of housing estate as mobile station location result.
Described radio network controller is handed down to the transmitting-receiving time difference measurements of the transmitting-receiving time difference measurements of travelling carriage for all sub-districts in this travelling carriage 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 travelling carriage Active Set measures.
If current use be the AGPS localization method, then described location degradation processing method further comprises:
Judge whether the mobile position estimation 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 radio network 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 CELLID method power initial alignment method is set, 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 UI 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 RTI measurement of all sub-districts in this UE Active Set;
Step 106: if the judged result power of step 101 is not, 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 environmental forces city building that blocks is than the sub-district of comparatively dense etc.; Typical outdoor open environmental forces: 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 OIDOA 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 OIDOA method, this moment, RNC selected CELLID power initial alignment method, and utilized selected initial alignment method to carry out mobile position estimation and handle;
Step 107: if the non-indoor environment of environmental form power of the sub-district that UE inserts is determined in the judgement of step 106, then RNC judges whether the stationkeeping ability of UE supports the AGPS localization method, and the environmental form of judging the sub-district that UE the inserts outdoor open environment of power whether, 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 selects AGPS power 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:, then the OTDOA localization method is provided with power initial alignment method and utilizes selected initial alignment method to carry out the mobile position estimation processing if support;
If current localization method is OTDOA, then RNC issues the location survey request of OTDOA type to UE, if
Figure C200610078816D0011134404QIETU
Returned correct measurement result, after then RNC utilizes this measurement result to position calculating, positioning result has been returned to core net, flow process finishes;
Otherwise, position the method degradation and handle, current localization method is provided with power 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 (11)

1、一种移动台定位处理方法，其特征在于，包括：1. A positioning processing method for a mobile station, comprising: A、无线网络控制器根据核心网的定位请求信息及用户信息选择初始定位方法进行定位处理，如果满足定位要求，则结束定位处理；A. The radio network controller selects an initial positioning method to perform positioning processing according to the positioning request information of the core network and user information, and ends the positioning processing if the positioning requirements are met; B、如果定位处理失败，则根据用户信息进行定位降级处理，使用定位降级处理后的定位方法对移动台进行定位。B. If the location processing fails, the location downgrade processing is performed according to the user information, and the mobile station is positioned using the location method after the location downgrade processing. 2、如权利要求1所述的一种移动台定位处理方法，其特征在于，所述的用户信息包括：移动台定位能力及移动台所接入的小区类型信息。2. A mobile station location processing method according to claim 1, characterized in that said user information includes: location capability of the mobile station and cell type information of the mobile station. 3、如权利要求1所述的一种移动台定位处理方法，其特征在于，所述的定位方法包括：网络辅助的GPS定位方法AGPS、观测时间差定位方法OTDOA、小区标识定位方法CELLID。3. A mobile station positioning processing method according to claim 1, characterized in that said positioning method comprises: network-assisted GPS positioning method AGPS, observation time difference positioning method OTDOA, and cell identification positioning method CELLID. 4、如权利要求3所述的一种移动台定位处理方法，其特征在于，所述选择初始定位方法的依次判断顺序为：4. A mobile station positioning processing method according to claim 3, characterized in that, the order of determining the selection of the initial positioning method is as follows: A1、首先无线网络控制器判断所请求的定位响应时间是否为快速响应、水平定位精度是否大于移动台所接入的小区覆盖半径、所述小区环境是否为室内环境，如果所请求的定位响应时间是快速响应、水平定位精度是大于移动台所接入的小区覆盖半径并且小区环境为市内环境，则选择CELLID定位方法为初始定位方法；否则，执行A1. First, the radio network controller judges whether the requested positioning response time is fast response, whether the horizontal positioning accuracy is greater than the coverage radius of the cell accessed by the mobile station, and whether the cell environment is an indoor environment. If the requested positioning response time is If the fast response and horizontal positioning accuracy are greater than the coverage radius of the cell accessed by the mobile station and the cell environment is an urban environment, select the CELLID positioning method as the initial positioning method; otherwise, execute A2、无线网络控制器判断移动台的定位能力是否支持AGPS定位方法、移动台所接入的小区环境是否为室外开阔环境、核心网的水平定位精度是否小于AGPS方法规定范围，如果移动台的定位能力是支持AGPS定位方法、移动台所接入的小区环境为室外开阔环境并且核心网的水平定位精度小于AGPS方法规定范围，则选择AGPS定位方法为初始定位方法；否则，执行A2. The radio network controller judges whether the positioning capability of the mobile station supports the AGPS positioning method, whether the cell environment the mobile station accesses is an open outdoor environment, and whether the horizontal positioning accuracy of the core network is less than the range specified by the AGPS method. If the positioning capability of the mobile station If the AGPS positioning method is supported, the cell environment accessed by the mobile station is an open outdoor environment and the horizontal positioning accuracy of the core network is less than the specified range of the AGPS method, then select the AGPS positioning method as the initial positioning method; otherwise, execute A3、无线网络控制器判断移动台是否支持OTDOA定位方法、核心网水平定位精度是否小于OTDOA方法规定范围，如果移动台支持OTDOA定位方法并且核心网水平定位精度小于OTDOA方法规定范围，则选择OTDOA定位方法为初始定位方法；否则，A3. The wireless network controller judges whether the mobile station supports the OTDOA positioning method and whether the horizontal positioning accuracy of the core network is less than the specified range of the OTDOA method. If the mobile station supports the OTDOA positioning method and the horizontal positioning accuracy of the core network is less than the specified range of the OTDOA method, select OTDOA positioning method is the initial positioning method; otherwise, A4、选择CELLID定位方法为初始定位方法。A4. Select the CELLID positioning method as the initial positioning method. 5、如权利要求4所述的一种移动台定位处理方法，其特征在于，所述选择初始定位方法时，依照所述顺序判断任意两种方法的适用性。5. The mobile station positioning processing method according to claim 4, wherein when selecting the initial positioning method, the applicability of any two methods is judged according to the order. 6、如权利要求5所述的一种移动台定位处理方法，其特征在于，如果当前使用的为CELLID定位方法，则所述移动台定位处理方法进一步包括：6. A mobile station positioning processing method according to claim 5, wherein if the currently used CELLID positioning method is used, the mobile station positioning processing method further comprises: 判断移动台是否支持收发时间差测量，Determine whether the mobile station supports the measurement of the time difference between sending and receiving, 如果支持，则无线网络控制器下发移动台收发时间差测量请求给移动台，并下发双向传播时间RTT定位测量请求给基站，无线网络控制器根据基站及移动台返回的正确的测量结果进行定位计算；If it is supported, the radio network controller sends a mobile station sending and receiving time difference measurement request to the mobile station, and sends a two-way propagation time RTT positioning measurement request to the base station, and the radio network controller performs positioning according to the correct measurement results returned by the base station and the mobile station calculate; 如果不支持，或者基站或移动台没有返回正确的测量结果，则直接将小区中心的位置作为移动台定位结果。If it is not supported, or the base station or the mobile station does not return the correct measurement result, the location of the cell center is directly used as the positioning result of the mobile station. 7、如权利要求6所述的一种移动台定位处理方法，其特征在于，所述无线网络控制器下发给移动台的收发时间差测量为该移动台激活集中所有小区的收发时间差测量。7 . The mobile station positioning processing method according to claim 6 , characterized in that, the transmit-receive time difference measurement issued by the radio network controller to the mobile station is the transmit-receive time difference measurement of all cells in the active set of the mobile station. 8、如权利要求6所述的一种移动台定位处理方法，其特征在于，所述无线网络控制器下发给基站的RTT测量为该移动台激活集中所有小区的RTT测量。8. The mobile station positioning processing method according to claim 6, wherein the RTT measurement delivered by the radio network controller to the base station is the RTT measurement of all the cells in the active set of the mobile station. 9、如权利要求3所述的一种移动台定位处理方法，其特征在于，如果当前使用的为AGPS定位方法，则所述的定位降级处理方法进一步包括：9. A positioning processing method for a mobile station according to claim 3, wherein if the AGPS positioning method is currently used, the positioning downgrading processing method further comprises: 判断移动台定位能力是否支持OTDOA定位方法，如果支持，则将当前定位方法设置为OTDOA进行定位处理；否则，Determine whether the positioning capability of the mobile station supports the OTDOA positioning method, and if so, set the current positioning method to OTDOA for positioning processing; otherwise, 设置为CELLID定位方法进行定位处理。Set to the CELLID positioning method for positioning processing. 10、如权利要求3所述的一种移动台定位处理方法，其特征在于，如果当前使用的为OTDOA定位方法，则所述的定位降级处理方法进一步包括：10. A positioning processing method for a mobile station according to claim 3, wherein if the OTDOA positioning method is currently used, the positioning downgrading processing method further comprises: 将当前定位方法设置为CELLID进行定位处理。Set the current positioning method to CELLID for positioning processing. 11、如权利要求1至10中任一项所述的一种移动台定位处理方法，其特征在于，所述方法进一步包括：11. A mobile station positioning processing method according to any one of claims 1 to 10, characterized in that the method further comprises: 如果定位处理成功，则无线网络控制器将定位结果返回给核心网。If the positioning process is successful, the radio network controller returns the positioning result to the core network.
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