WO2010084959A1 - 測位支援装置及び測位支援方法 - Google Patents
測位支援装置及び測位支援方法 Download PDFInfo
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- WO2010084959A1 WO2010084959A1 PCT/JP2010/050820 JP2010050820W WO2010084959A1 WO 2010084959 A1 WO2010084959 A1 WO 2010084959A1 JP 2010050820 W JP2010050820 W JP 2010050820W WO 2010084959 A1 WO2010084959 A1 WO 2010084959A1
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- communication terminal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/05—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data
- G01S19/06—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing aiding data employing an initial estimate of the location of the receiver as aiding data or in generating aiding data
Definitions
- the present invention relates to a positioning support apparatus that transmits approximate position information used as assist data during positioning calculation by a communication terminal to the communication terminal and a positioning support method by the positioning support apparatus.
- a positioning support apparatus is used for positioning calculation in a previous communication terminal, and includes approximate position information indicating the position of a cell in which the communication terminal is located, information identifying the cell, And a location information storing means for storing the information in association with each other and a cell in which the communication terminal is located based on a positioning information transmission request transmitted from the communication terminal, including information for specifying a cell in which the communication terminal is located.
- the approximate position information stored in the approximate position information storage means in association with the information for identifying the position information is transmitted to the communication terminal, and the positioning calculation is transmitted from the communication terminal.
- Positioning result receiving means for receiving positioning result information, which is information indicating the result of the above, and an approximate position for updating the approximate position information stored in the approximate position information storage means based on the positioning result information Characterized in that it comprises a multi-address updating means.
- the accuracy of the approximate position information stored in the approximate position information storage means can be maintained more appropriately.
- the approximate position information is information for specifying the position of the base station related to the cell, and the approximate position information and the positioning result An aspect in which the information is information including latitude and longitude is mentioned.
- the approximate position information update means sets the midpoint between the position specified by the approximate position information transmitted to the communication terminal and the position specified by the positioning result information as new approximate position information. It is good also as an aspect to do.
- the approximate position information storage means stores a flag indicating whether or not the approximate position information needs to be updated in association with the approximate position information
- the approximate position information update means stores the approximate position information based on the flag. When it is determined that the information needs to be updated, the approximate position information can be updated.
- the approximate position information stored in the approximate position information storage means is accurate information, there is a possibility that the accuracy of the approximate position information may be lowered by updating based on the positioning result by the communication terminal. is there. Therefore, by storing the flag indicating whether update is necessary in association with the approximate position information, it is possible to prevent the accuracy of the approximate position information from being lowered.
- the present invention can be described as an invention of a positioning support method as follows, in addition to being described as an invention of a positioning support apparatus as described above. This is substantially the same invention only in different categories, and has the same operations and effects.
- the positioning support method according to the present invention is used for positioning calculation in a communication terminal, and stores approximate position information indicating the position of a cell in which the communication terminal is located and information specifying the cell in association with each other.
- a positioning support method by a positioning support apparatus including approximate position information storage means comprising: positioning information transmission request including information identifying a cell where the communication terminal is located by the approximate position information transmission means; Based on the information, the approximate position information stored in the approximate position information storage means in association with the information specifying the cell where the communication terminal is located is acquired and transmitted to the communication terminal.
- a positioning result receiving step for receiving positioning result information that is information indicating a result of the positioning calculation transmitted from the communication terminal when the communication terminal performs positioning calculation;
- the approximate position information updating unit based on the positioning result, characterized in that it comprises a approximate position information updating step of updating the approximate location information stored in the approximate positional information storage means.
- a positioning support apparatus that transmits high-accuracy approximate position information to a communication terminal and a positioning support method using the positioning support apparatus.
- FIG. 1 It is a block diagram explaining the structure of the positioning system which concerns on suitable embodiment of this invention. It is a figure which shows the hardware constitutions of a SUPL server, a positional information management apparatus, a user information management apparatus, a GW apparatus, and a base station apparatus. It is a figure which shows the hardware constitutions of a communication terminal. It is an example of the approximate position information stored in the approximate position information DB. It is an example of the positional information on SGSN stored in rough position information DB. It is an example of the information stored in management DB. It is a sequence diagram explaining the process for communicating between the communication terminal 60 and the SUPL server 20. FIG.
- FIG. It is a sequence diagram explaining the process which concerns on the authentication process of the communication terminal 60 in the mobile communication network N1, and the preparation of the approximate position information transmitted with respect to the communication terminal 60.
- FIG. It is a flowchart explaining the process which determines the transmission data transmitted with respect to a SUPL server in a positional infomation management apparatus. It is a flowchart explaining the process which determines the positional information used as rough positional information transmitted with respect to a communication terminal from a SUPL server. It is a flowchart explaining the process which determines the positional information used as rough positional information transmitted with respect to a communication terminal from a SUPL server. It is a sequence diagram explaining the process which concerns on the GPS positioning in the communication terminal 60, and the process after positioning.
- FIG. 1 is a block diagram illustrating a configuration of a positioning system 1 according to a preferred embodiment of the present invention.
- the positioning system 1 includes a SUPL (Secure User Plane Location) server 20 and a location information management device 30, a user information management device 40, a GW (Gateway) device 50, a communication terminal 60, a base that constitute the positioning support system 10. And a station device 70.
- the positioning support system 10 including the SUPL server 20 and the location information management device 30 is a device that supports the positioning calculation by the communication terminal 60, and includes the user information management device 40, the GW device 50, and the base station device 70.
- the SUPL server 20, the location information management device 30, the user information management device 40, and the GW device 50 are devices included in the same mobile communication network, and the communication terminal 60 is connected to the mobile communication network N1.
- the communication terminal 60 is in a state of roaming out from the mobile communication network N1 as in the case of being used overseas, for example, and is included in the mobile communication network N2 different from the mobile communication network N1.
- Communication is performed by connecting to the base station device 70 to be connected. At this time, a case where the communication terminal 60 performs positioning upon receiving assistance data from the positioning support system 10 included in the mobile communication network N1 will be described.
- information (assist data) such as the position of the GPS satellite and the approximate position (initial position) information of the communication terminal 60 is transmitted from the positioning support system 10 to the communication terminal.
- the processing related to the acquisition of GPS satellites by the communication terminal 60 and the shortening of the positioning time are achieved.
- the communication terminal 60 requests the positioning support system 10 to provide assist data
- information indicating the approximate position of the communication terminal 60 and the position of the GPS satellite from which the communication terminal 60 can receive a signal By receiving information from the positioning support system 10, GPS positioning is performed by the communication terminal 60 and the position of the communication terminal 60 is obtained.
- the position information of the base station apparatus can be easily obtained. Therefore, it is easy to store the position information as assist data in the positioning support system 10.
- the base station device 70 in which the communication terminal 60 is located is installed by another mobile communication network N2. It is difficult for the positioning support system 10 to grasp accurate information on the position where the station device 70 is provided. Therefore, when the approximate position information is created based on information provided from the communication terminal 60 (for example, information specifying a country in which the mobile terminal 60 is located or a communication carrier providing the mobile communication network N2), the accuracy is remarkably high. Therefore, the accuracy of the result of performing GPS positioning using this information may be lowered.
- the positioning system 1 including the positioning support system 10 in which the accuracy of the approximate position information transmitted to the communication terminal 60 is increased will be described.
- the SUPL server 20 constituting the positioning support system 10 included in the positioning system 1 is a device having the main functions of the positioning support system 10, stores assist data to be transmitted to the communication terminal 60, and On the basis of the request, the assist data is transmitted to the communication terminal 60.
- the base station device 70 is a device included in the mobile communication network N2, and forms a cell C1 by transmitting radio waves to a specific range.
- the communication terminal 60 can perform communication by transmitting and receiving information via the base station device 70.
- Each cell is given a unique cell ID, and this cell ID makes it possible to distinguish which base station device 70 is a related cell.
- a plurality of base station devices including the base station device 70 are managed by an SGSN (Serving GPRS Support Node) (not shown) that is located upstream of the base station device in the mobile communication network N2 and controls packet communication. Has been.
- SGSN Serving GPRS Support Node
- between the SUPL server 20 and the location information management device 30, between the location information management device 30 and the user information management device 40, between the user information management device 40 and the GW device 50, and between the GW device 50 and the SUPL server 20. are connected via a wired network.
- Information is exchanged between the communication terminal 60 and the GW apparatus 50 and between the communication terminal 60 and the base station apparatus 70 by wireless communication.
- the control unit 22 has a part of the function of the approximate position information transmitting unit that acquires the approximate position information stored in the approximate position information DB 23 based on the positioning information transmission request transmitted from the communication terminal 60.
- the approximate position information transmitted from the control unit 22 to the communication terminal 60 includes information transmitted from the position information management device 30 described later for the purpose of transmitting approximate position information with higher accuracy to the communication terminal 60. To be determined. The specific processing will be described in the description related to the positioning support method described later.
- the control unit 22 serves as an approximate position information update unit that updates approximate position information stored in an approximate position information DB 23 described later based on positioning result information indicating the result of GPS positioning transmitted from the communication terminal 60. It has a function. The update information of the approximate position information by the control unit 22 will be described later.
- Lat (Latitude (Y), latitude), Lon (Longitude (X), longitude), Alt (Altitude, altitude from the WGS84 ellipsoid used as a reference for GPS positioning), Unc (Uncertainty (k), latitude / longitude) Unc-Alt (Uncertainty Altitude (k), high degree of uncertainty) indicates the approximate position information stored corresponding to the cell ID. Uncertainty indicates the accuracy based on the calculation method of the approximate position information and the GPS positioning result using the approximate position information. Further, the necessity of update is a flag indicating whether or not the information stored in the table shown in FIG. 4 needs to be updated based on the positioning result transmitted from the communication terminal 60.
- the approximate position information stored in association with the cell ID is either (1) information indicating the exact position of the base station apparatus related to the cell specified by the cell ID, or (2) the base station It is not information that accurately indicates the position of the device, but information that has been updated based on the results of positioning in the same cell in the past.
- the information indicating the exact location of the base station device (1) is inquired of the GMLC of the carrier managing the base station device by specifying the cell ID corresponding to the base station device, for example. Can be obtained.
- accurate information is already stored in the approximate position information DB 23, it is not necessary to further update the information in the approximate position information DB 23, and a flag indicating “update unnecessary” is given to the information.
- the approximate position information DB 23 stores (2) approximate position information calculated based on the approximate position information and positioning results used in the past in the same cell.
- new approximate position information is created based on the result of positioning in the cell specified by the cell ID by the control unit 22 (approximate position information update means).
- the information stored in the approximate position information DB 23 is updated.
- the communication unit 31 of the location information management device 30 performs a communication process with the user information management device 40, thereby performing authentication processing of the communication terminal 60 that transmits a connection request to the SUPL server 20, and a SUPL server.
- the management DB 33 functions as a part of approximate position information storage means for storing information related to determination of approximate position information to be transmitted to the communication terminal 60.
- An example of information stored in the management DB 33 is shown in FIG.
- the management DB 33 stores MCC, MNC, SGSN IP address, and location information (Lat, Lon, Alt, Unc, Unc-Alt) in association with each other. Also included are those in which the position information is stored in association with MCC and MNC.
- the location information stored in association with the IP address of the SGSN is based on, for example, information transmitted from an operator specified by the MCC and MNC. Is accurate and accurate information.
- the management DB 33 stores approximate position information obtained using at least a part of the IP addresses of the MCC, MNC, and SGSN.
- the communication terminal 60 transmits a connection request for providing a communication path with the SUPL server 20 to the GW device 50 via the base station device 70.
- This connection request is transmitted when the user of the communication terminal 60 operates the communication terminal 60.
- the GW device 50 receives this connection request, performs TCP (Transmission Control Protocol) connection establishment processing between the communication terminal 60 and the GW device 50 (S01), and also between the GW device 50 and the SUPL server 20.
- TCP Transmission Control Protocol
- the user information management device 40 acquires this information (source IP address, source port number, roaming location information, SGSN IP address) and transmits it to the location information management device 30 as a user information response (ISCP_Authentication-Response). (S15).
- the position information management device 30 when the information transmitted from the user information management device 40 is received, the information is transmitted from the communication unit 31 to the control unit 32 together with the information transmitted from the SUPL server 20 first. And it is judged in the control part 32 whether communication with the communication terminal 60 and the SUPL server 20 may be continued by confirming whether both correspond (S16).
- the above information does not match, it is determined that the communication with the communication terminal 60 cannot be continued, and the connection is stopped. If it is determined that the process can be continued, the process proceeds to the process related to the approximate position information transmission.
- the status of the communication terminal 60 is next checked (S202).
- the status of the communication terminal 60 confirmed here is information for confirming whether or not the communication terminal 60 is located in the area of the cell C1, and from the communication terminal 60 at the time of positioning start request (ULP_SUPL-START). This is information indicating the connection status for the notified cell C1.
- the case where the status is “Unknown” is a case where it is unknown whether or not the communication terminal 60 is continuously located in the cell C1 (possibility of not being located). Use of information stored in the position information DB 23 is suppressed.
- this status is not “Unknown”, that is, when it is considered that the communication terminal 60 is continuously located in the cell C1, information corresponding to the cell ID is already stored. It is confirmed whether or not there is (S203).
- a response (ULP_SUPL-POS (RRLP_Measure-Position-Request)) including the GPS satellite route information and approximate position information acquired by a process different from the above process is transmitted to the communication terminal 60 ( S23, approximate position information transmission step).
- approximate position information latitude, longitude, altitude, latitude / longitude uncertainty, altitude uncertainty
- GPS satellite route information ephemeris, almanac
- the SUPL server 20 receives the positioning result information transmitted from the communication terminal 60, Based on this positioning result information, the approximate position information stored in association with the cell ID is updated in the approximate position information DB 23.
- the approximate position information stored in the approximate position information DB 23 is updated based on the results of positioning by the communication terminal in the same cell, the accuracy of the approximate position information can be improved.
- the terminal 60 performs GPS positioning, approximate position information with higher accuracy can be transmitted to the communication terminal 60.
- the approximate position information stored in the approximate position information DB 23 is accurate information obtained, for example, by making an inquiry to the GMLC of the mobile communication network N2, based on the positioning result by the communication terminal 60.
- the accuracy of the approximate position information is reduced by updating the approximate position information by storing the "flag indicating whether update is necessary" that can be flagged to be updated in association with the approximate position information. Can be prevented.
- the update method for updating the approximate position information based on the positioning result from the communication terminal 60 is the same as the method described in the above embodiment (the position based on the approximate position information transmitted to the communication terminal 60 and the communication terminal 60.
- the method is not limited to a method in which the midpoint of the position based on the positioning result information from is used as new approximate position information or a method in which the average value of the results measured in the past in the same cell is used as new approximate position information).
- This method can be used.
- a method of updating approximate position information by further utilizing the success rate of GPS positioning or the like can be used.
- a specific method of using the GPS positioning success rate for example, when the GPS positioning success rate in a cell of a specific cell ID falls below a certain threshold, approximate position information used in the GPS positioning of the cell ID The method of deleting once is mentioned.
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Abstract
Description
図1は、本発明の好適な実施形態に係る測位システム1の構成を説明するブロック図である。測位システム1は、測位支援システム10を構成するSUPL(Secure User Plane Location)サーバ20及び位置情報管理装置30と、ユーザ情報管理装置40と、GW(Gateway)装置50と、通信端末60と、基地局装置70と、を含んで構成される。このうち、SUPLサーバ20及び位置情報管理装置30により構成される測位支援システム10は、通信端末60による測位演算を支援する装置であり、ユーザ情報管理装置40、GW装置50、及び基地局装置70は、それぞれ、通信端末60と測位支援システム10との間の通信に係る装置である。また、SUPLサーバ20、位置情報管理装置30、ユーザ情報管理装置40、及びGW装置50は、同じ移動体通信網に含まれる装置であり、通信端末60は、この移動体通信網N1に対して接続する機能を有する。なお、本実施形態においては、通信端末60は、例えば海外において用いられる場合のように移動体通信網N1からローミングアウトした状態であり、移動体通信網N1とは異なる移動体通信網N2に含まれる基地局装置70に対して接続することにより、通信を行っている。このとき、通信端末60が移動体通信網N1に含まれる測位支援システム10からのアシストデータの提供を受けて測位を行う場合について説明する。
次に、上記の測位支援システム10を含む測位システム1による測位方法(測位支援システム10による測位支援方法)について、図7、図8及び図12に示すシーケンス図と、図9~図11に示すフローチャートを用いて説明する。なお、図7は、通信端末60とSUPLサーバ20との間で通信を行うための処理を説明するシーケンス図である。また、図8は、移動体通信網N1における通信端末60の認証処理及び通信端末60に対して送信する概位置情報の準備に係る処理を説明するシーケンス図である。また、図12は、通信端末60におけるGPS測位に係る処理及び測位後の処理について説明するシーケンス図である。また、図9~図11は、図8に示す処理の詳細を説明するフローチャートである。
上記実施形態に係る測位支援システム10及び測位支援システム10を含む測位システム1による測位方法(測位支援方法)によれば、SUPLサーバ20において、通信端末60から送信される測位結果情報を受信し、この測位結果情報に基づいて、概位置情報DB23において、セルIDに対応付けて格納される概位置情報が更新される。このように、同一のセルでの通信端末による測位の実績に基づいて、概位置情報DB23に格納される概位置情報が更新されることにより、概位置情報の精度を高めることができるため、通信端末60がGPS測位を行う際に、通信端末60に対してより高い精度の概位置情報を送信することができる。
Claims (7)
- 通信端末における測位演算に使用され、当該通信端末が在圏するセルの位置を示す概位置情報と、当該セルを特定する情報とを対応付けて格納する概位置情報格納手段と、
前記通信端末が在圏するセルを特定する情報を含み前記通信端末から送信される測位情報送信要求に基づいて、前記通信端末が在圏するセルを特定する情報に対応付けて前記概位置情報格納手段に格納される前記概位置情報を取得し、前記通信端末に対して送信する概位置情報送信手段と、
通信端末から送信される当該測位演算の結果を示す情報である測位結果情報を受信する測位結果受信手段と、
前記測位結果情報に基づいて、前記概位置情報格納手段において格納される前記概位置情報を更新する概位置情報更新手段と
を備えることを特徴とする測位支援装置。 - 前記測位結果受信手段は、前記概位置情報送信手段により前記概位置情報を送信した前記通信端末から送信される前記測位結果情報を受信する
ことを特徴とする請求項1記載の測位支援装置。 - 前記概位置情報は、前記セルに係る基地局の位置を特定する情報であり、
前記概位置情報及び前記測位結果情報は、緯度及び経度を含む情報であることを特徴とする請求項1記載の測位支援装置。 - 前記概位置情報更新手段は、前記通信端末に対して送信した前記概位置情報により特定される位置と、前記測位結果情報により特定される位置とに基づいて、新たな概位置情報を算出する
ことを特徴とする請求項1~3のいずれか一項に記載の測位支援装置。 - 前記概位置情報更新手段は、前記通信端末に対して送信した前記概位置情報により特定される位置と、前記測位結果情報により特定される位置との中点を新たな概位置情報とする
ことを特徴とする請求項4記載の測位支援装置。 - 前記概位置情報格納手段は、前記概位置情報の更新要否を示すフラグを前記概位置情報に対応付けて格納し、
前記概位置情報更新手段は、前記フラグに基づいて、前記概位置情報の更新が必要であると判断される場合に、前記概位置情報の更新を行う
ことを特徴とする請求項1~5のいずれか一項に記載の測位支援装置。 - 通信端末における測位演算に使用され、当該通信端末が在圏するセルの位置を示す概位置情報と、当該セルを特定する情報とを対応付けて格納する概位置情報格納手段を備える測位支援装置による測位支援方法であって、
概位置情報送信手段により、前記通信端末が在圏するセルを特定する情報を含み前記通信端末から送信される測位情報送信要求に基づいて、前記通信端末が在圏するセルを特定する情報に対応付けて前記概位置情報格納手段に格納される前記概位置情報を取得し、前記通信端末に対して送信する概位置情報送信ステップと、
通信端末が測位演算を行うことにより前記通信端末から送信される当該測位演算の結果を示す情報である測位結果情報を受信する測位結果受信ステップと、
概位置情報更新手段により、前記測位結果情報に基づいて、前記概位置情報格納手段において格納される前記概位置情報を更新する概位置情報更新ステップと
を備えることを特徴とする測位支援方法。
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US13/145,913 US8472975B2 (en) | 2009-01-23 | 2010-01-22 | Positioning support device and positioning support method |
EP10733566.3A EP2383585A4 (en) | 2009-01-23 | 2010-01-22 | LOCATION ASSISTING DEVICE AND LOCATION ASSISTING METHOD |
CN201080005256.1A CN102292653B (zh) | 2009-01-23 | 2010-01-22 | 定位辅助装置及定位辅助方法 |
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CN103491129B (zh) * | 2013-07-05 | 2017-07-14 | 华为技术有限公司 | 一种业务节点配置方法、业务节点池注册器及系统 |
JP6764285B2 (ja) * | 2016-08-29 | 2020-09-30 | 株式会社Nttドコモ | 情報処理装置 |
CN107820204B (zh) * | 2017-10-23 | 2020-09-18 | 千寻位置网络有限公司 | 保护用户位置隐私的高精度定位方法及系统 |
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Also Published As
Publication number | Publication date |
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EP2383585A4 (en) | 2014-04-30 |
JP5449788B2 (ja) | 2014-03-19 |
JP2010169554A (ja) | 2010-08-05 |
CN102292653B (zh) | 2013-06-19 |
EP2383585A1 (en) | 2011-11-02 |
US20110306356A1 (en) | 2011-12-15 |
CN102292653A (zh) | 2011-12-21 |
US8472975B2 (en) | 2013-06-25 |
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