KR100480045B1 - Position monitoring apparatus and method for mobile communication device - Google Patents
Position monitoring apparatus and method for mobile communication device Download PDFInfo
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- KR100480045B1 KR100480045B1 KR10-2001-0021456A KR20010021456A KR100480045B1 KR 100480045 B1 KR100480045 B1 KR 100480045B1 KR 20010021456 A KR20010021456 A KR 20010021456A KR 100480045 B1 KR100480045 B1 KR 100480045B1
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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
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/12—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
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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
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
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Abstract
본 발명은 이동통신 단말기의 위치 추적 장치 및 방법에 관한 것으로, 셀룰러 방식에 의해 통신을 수행하는 이동통신 단말기의 위치를 추적함에 있어서, 셀룰러 방식에 의해 통신을 수행하는 이동통신 단말기의 위치를 추적함에 있어서, 단말기와 다수 기지국간의 송,수신 신호에 의해 도착시간 데이터 및 수신각도 데이터를 구하는 제1단계와; 상기 도착시간 데이터를 이용하여 각 기지국을 중심으로 소정 반경의 가상원을 설정하는 제2단계와; 상기 수신각도 데이터를 이용하여 단말기의 수신각도 방향으로 각각의 가상 라인을 형성하는 제3단계와; 상기 각 기지국을 중심으로 한 가상원과 가상의 라인이 교차하는 각 지점을 단말기의 추정위치로 가상 설정하는 제4단계와; 상기 각 추정위치들에 대한 평균 좌표값을 단말기의 최종 위치로 결정하는 제5단계로 이루어져 도심지역에서는 기지국 수에 비례하여 단말기의 위치추적 성능을 향상시킬 수 있도록 하는 효과가 있다.The present invention relates to an apparatus and method for tracking a location of a mobile communication terminal. The present invention relates to tracking a location of a mobile communication terminal performing communication by a cellular method. A first step of obtaining the arrival time data and the reception angle data by the transmission and reception signals between the terminal and the plurality of base stations; A second step of setting a virtual circle having a predetermined radius around each base station using the arrival time data; A third step of forming each virtual line in a reception angle direction of the terminal using the reception angle data; A fourth step of virtually setting each point at which the virtual circle centered around each base station and the virtual line intersect as an estimated position of the terminal; The fifth step of determining the average coordinate value for each of the estimated positions as the final position of the terminal has the effect of improving the location tracking performance of the terminal in proportion to the number of base stations in the downtown area.
Description
본 발명은 이동통신 단말기의 위치 추적 장치 및 방법에 관한 것으로, 특히 코드분할 다중접속(CDMA : Code Division Multiple Access) 기술을 이용한 셀룰러 네트워크에서 다수의 기지국으로부터 구한 도착시간(TOA : Time Of Arrival)과 수신각도(AOA : Angle Of Arrival) 데이터를 이용하여 단말기의 가상위치를 다수 추정하고, 그 다수 추정위치에 대한 좌표 평균값에 의해 최종위치를 결정하는 이동통신 단말기의 위치 추적 장치 및 방법에 관한 것이다.The present invention relates to an apparatus and method for tracking a location of a mobile communication terminal, and in particular, a time of arrival (TOA) obtained from a plurality of base stations in a cellular network using a code division multiple access (CDMA) technique. The present invention relates to a location tracking device and a method of a mobile communication terminal for estimating a plurality of virtual positions of a terminal using angle-of-arrival (AOA) data and determining a final position based on a coordinate average value of the plurality of estimated positions.
무선 통신 시스템에서 이동체의 위치를 추적하는 방법에는 여러가지가 있다. 그 중에서 CDMA 셀룰러 시스템에 적용할 수 있는 방법도 여러 가지가 있는데, 이를 크게 단말기의 개조가 필요한 방법과 단말기의 개조가 필요없는 방법으로 구분할 수 있다.There are many ways to track the position of a moving object in a wireless communication system. Among them, there are various methods that can be applied to a CDMA cellular system, which can be classified into a method that requires a terminal remodeling and a method that does not require a terminal remodeling.
먼저, 단말기의 개조가 필요한 방법 중에서 대표적인 것으로 GPS(Global Positioning System)를 이용하는 방법이 있는데, 이를 위해서는 가입자가 휴대하고 있는 단말기 내에 GPS 수신기가 장착되어 있어야 한다.First of all, there is a method of using a GPS (Global Positioning System) among the methods that require modification of the terminal. For this purpose, the GPS receiver must be mounted in the terminal that the subscriber is carrying.
도1은 GPS 위성을 이용한 가입자의 위치추정 시스템을 나타내고 있다.1 shows a subscriber location system using GPS satellites.
이에 도시된 바와 같이 만약, 가입자가 응급상황에 처해서 구조를 요청하기 위해 단말기의 특정 버튼을 눌러서 GPS 수신기(103)를 동작시키면, 단말기에 장착된 GPS 수신기는 최소한 세 개 이상(3차원 상의 위치를 구하고자 할 때는 네 개 이상)의 GPS 위성(101)으로부터 신호를 수신하여 단말기와 각 위성사이의 거리(R1, R2, R3, R4)를 계산하고, GPS 위성으로부터 수신한 추가적인 정보를 이용하여 단말기의 위치를 계산한다.As shown in the figure, if the subscriber operates a GPS receiver 103 by pressing a specific button of the terminal to request rescue in an emergency, at least three GPS receivers mounted on the terminal are located in three-dimensional position. When you want to obtain the signal from the GPS satellite 101 of four or more to calculate the distance (R1, R2, R3, R4) between the terminal and each satellite, using the additional information received from the GPS satellite Calculate the location of the terminal.
계산된 위치는 자동적으로 CDMA 셀룰러 망을 이용해서 가입자의 위치 정보를 필요로 하는 곳(응용서버)(105)으로 전송된다.The calculated location is automatically sent to the location (application server) 105 that needs the subscriber's location information using the CDMA cellular network.
한편, 단말기의 개조가 필요없는 방법에도 여러 가지가 있는데, 그 중 많이 사용되는 방법이 도착시간(TOA)을 이용하는 방법, 수신각도(AOA)를 이용하는 방법, 도착시간차이(TDOA : Time Difference of Arrival)를 이용하는 방법 등이 있다.On the other hand, there are many methods that do not require the modification of the terminal, among which the most commonly used method is the method of using the arrival time (TOA), the method of using the reception angle (AOA), the time difference of arrival (TDOA) ), And the like.
먼저, 도착시간(TOA)을 이용하는 방법은 도2에 도시된 바와 같이, 단말기(202)에서 송신한 신호를 단말기 주변의 여러 기지국(201)에서 수신하고, 각 기지국에서는 수신된 신호의 도달시간을 측정하여 단말기와 기지국 사이의 거리(R1,R2,R3)를 구하고, 그 거리를 반지름으로 하는 가상의 원을 기지국을 중심으로 그린다.First, as shown in FIG. 2, a method of using the arrival time (TOA) receives a signal transmitted from the terminal 202 at various base stations 201 around the terminal, and each base station receives the arrival time of the received signal. By measuring, the distances R1, R2, and R3 between the terminal and the base station are obtained, and a virtual circle whose radius is the distance is drawn around the base station.
이렇게 해서 구한 원들이 교차하는 지점을 단말기의 위치라고 추정하는 방법이다.In this way, it is a method of estimating the position of the terminal at the intersection of the obtained circles.
다음, 수신각도(AOA)를 이용하는 방법은 도3에 도시된 바와 같이, 단말기(302)에서 송신한 신호를 단말기 주변의 여러 기지국(301)에서 수신하고, 각 기지국에서는 수신된 신호의 수신방향을 측정하여 그 방향으로 가상의 선을 긋고, 그 선들이 교차하는 지점을 단말기의 위치라고 추정하는 방법이다.Next, as shown in FIG. 3, in the method using the receiving angle AAO, a signal transmitted from the terminal 302 is received by several base stations 301 around the terminal, and each base station receives a reception direction of the received signal. It is a method of measuring and drawing an imaginary line in the direction, and estimating the point where the lines intersect as the position of the terminal.
다음, 도착시간차이(TDOA)를 이용하는 방법은 도4에 도시된 바와 같이, 단말기(402)에서 송신한 신호를 단말기 주변의 여러 기지국(401)에서 수신하고, 각 기지국에 수신된 신호의 도달시간 차이를 이용해서 쌍곡선을 그리고, 그 쌍곡선들이 교차하는 지점을 단말기의 위치라고 추정하는 방법이다.Next, as shown in FIG. 4, the method using the arrival time difference (TDOA) receives a signal transmitted from the terminal 402 at various base stations 401 around the terminal, and the arrival time of the signal received at each base station. It is a method of drawing a hyperbola using the difference and estimating the position of the terminal at the point where the hyperbolas intersect.
그러나, 상기 GPS 시스템을 이용한 위치 추적 방법은 GPS 수신기를 추가로 부가해야 하기 때문에, 단말기 제작비용이 증가하고 단말기의 부피가 커지고 무거워질 뿐만 아니라, GPS 수신기도 단말기 배터리의 전력을 사용해야 되므로 단말기의 전력 소모가 커지게 되는 문제점이 있다.However, since the location tracking method using the GPS system requires the addition of a GPS receiver, the terminal manufacturing cost increases, the terminal becomes bulky and heavy, and the GPS receiver also needs to use the power of the terminal battery. There is a problem that the consumption is increased.
또한, GPS 위성에서 송신하는 신호가 지구상의 단말기에 도달할 때는 아주 미약한 신호가 되기 때문에, 도심지역이나 실내 등 단말기와 GPS 위성 사이에 장애물이 있을 경우에는 GPS 신호의 수신이 어려워 성능이 떨어지는 문제점이 있다.In addition, since a signal transmitted from a GPS satellite reaches a terminal on the earth, it becomes a very weak signal. Therefore, when there is an obstacle between a terminal and a GPS satellite such as an urban area or indoors, reception of a GPS signal is difficult and performance is degraded. There is this.
한편, 단말기의 개조가 필요없는 도착시간(TOA) 및 도착시간차이(TDOA)를 이용하는 방법은, 단말기 주변의 최소한 세 개 이상의 기지국을 이용해야 하고, 수신각도(AOA)를 이용하는 방법도 최소한 두 개 이상의 기지국을 이용해야 하는데, 가입자가 교외지역에 있을 경우 주변에 기지국이 두 개 또는 세 개 이상 있는 경우가 많지 않다.On the other hand, the method of using the arrival time difference (TOA) and the arrival time difference (TDOA) that does not require modification of the terminal should use at least three or more base stations around the terminal, and at least two methods of using the reception angle (AOA). The above base stations should be used, but when the subscriber is in the suburbs, there are not many cases where there are two or three base stations nearby.
따라서, 교외 지역에서는 대부분 가입자가 속해 있는 셀 내의 기지국만이 존재하고, 다른 기지국들은 아주 먼 거리에 위치해 있어서 단말기의 신호가 도달하기가 쉽지 않고, 도달한다고 하더라도 신호가 미약하고 에러가 많기 때문에 가입자의 위치 추적이 쉽지 않다.Therefore, in the suburban area, there are only base stations in the cell to which the subscriber belongs, and other base stations are located at a very long distance so that the signal of the terminal is not easy to reach, and even if the signal is reached, the signal is weak and there are many errors. Location tracking is not easy
이와 같이, 교외지역에서는 도착시간(TOA) 또는 수신각도(AOA)와 같은 한가지 방법만을 사용해서 가입자의 위치를 추정하기에는 어려운 문제점이 있다.As such, there is a problem in suburban areas that it is difficult to estimate the location of the subscriber using only one method such as arrival time (TOA) or reception angle (AOA).
따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 창출한 것으로, 도심지역에서 기지국 수에 비례하여 다수의 가상 추정위치에 대한 좌표 평균값으로 단말기의 위치를 결정함으로써, 단말기의 위치추적 성능을 향상시킬 수 있도록 하는 이동통신 단말기의 위치 추적 장치 및 방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and by determining the position of the terminal by the coordinate average value for a plurality of virtual estimated positions in proportion to the number of base stations in the urban area, the location tracking performance of the terminal is improved. An object of the present invention is to provide an apparatus and method for tracking a location of a mobile communication terminal.
이와 같은 목적을 달성하기 위한 본 발명은, 셀룰러 방식에 의해 통신을 수행하는 이동통신 단말기의 위치를 추적함에 있어서, 각 기지국과 단말기간에 송,수신된 신호를 입력받아 처리하는 이동통신 교환국과; 상기 이동통신 교환국을 통해 수신된 신호의 도착시간에 의해 단말기와 기지국간의 거리를 계산하는 도착시간 계산부와; 상기 이동통신 교환국을 통해 수신된 신호에서 단말기의 수신방향을 계산하는 수신각도 계산부와; 상기 도착시간 계산부에서 구한 거리를 반경으로 하는 다수의 가상원에, 수신각도 계산부에서 구한 각도의 방향으로 다수의 가상 연장선을 그어, 그 교차되는 다수 지점의 좌표 평균값을 바탕으로 단말기의 위치를 결정하는 위치 결정부를 포함하여 구성된 것을 특징으로 한다.In order to achieve the above object, the present invention provides a mobile communication terminal for tracking a location of a mobile communication terminal communicating by a cellular method, the mobile communication switching station receiving and processing a signal transmitted and received between each base station and the terminal; An arrival time calculator for calculating a distance between the terminal and the base station based on the arrival time of the signal received through the mobile communication switching center; A reception angle calculator configured to calculate a reception direction of a terminal from a signal received through the mobile communication switching center; A plurality of virtual extension lines are drawn in a plurality of virtual circles whose radius is the distance obtained by the arrival time calculating unit in the direction of the angle obtained by the receiving angle calculating unit, and the position of the terminal is determined based on the coordinate average values of the crossing points. Characterized in that it comprises a positioning unit to determine.
이하, 본 발명에 따른 일실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
도5는 본 발명에 의한 위치 추적 방법을 보인 순서도이다.5 is a flowchart illustrating a location tracking method according to the present invention.
이에 도시한 바와 같이, 가입자가 응급상황에 처해서 구조를 요청하기 위해 단말기의 특정 버튼을 눌러 신호를 송신하면, 가입자가 위치해 있는 셀의 기지국을 비롯하여 주변의 기지국에서 그 신호를 수신한다(S11).As shown in the figure, when a subscriber transmits a signal by pressing a specific button of a terminal to request rescue in an emergency, the subscriber receives the signal from a base station of a cell including the base station of the cell in which the subscriber is located (S11). .
그리고, 그 신호들은 도7에 도시된 이동통신 교환국(701)을 통해 위치계산장치(702, 703)로 전달된다. 그러면, 도착시간 계산부(702)에서는 각 기지국에서 수신된 신호를 처리하여 단말기가 송신한 신호가 각 기지국에 도착한 시간을 계산한다(S12). The signals are then transmitted to the position calculating devices 702 and 703 through the mobile communication switching center 701 shown in FIG. Then, the arrival time calculation unit 702 processes the signal received at each base station and calculates the time when the signal transmitted from the terminal arrives at each base station (S12).
만약, 교외지역과 같이 셀의 반경이 커서 기지국과 기지국 사이의 거리가 상당히 먼 경우는, 가입자가 속해 있는 셀의 기지국에서 수신한 신호만을 처리해서 하나의 도착시간(TOA)를 구한다.If a cell has a large radius, such as a suburban area, and the distance between the base station and the base station is very long, only one signal of arrival (TOA) is obtained by processing only the signal received from the base station of the cell to which the subscriber belongs.
또, 각 기지국에 설치된 배열안테나 시스템(미도시)에서는 단말기 신호의 수신각도를 계산하여, 도7에 도시된 이동통신 교환국을 통해 수신각도 계산부(703)로 전달된다(S13).Further, in the array antenna system (not shown) installed in each base station, the reception angle of the terminal signal is calculated and transmitted to the reception angle calculation unit 703 through the mobile communication switching station shown in FIG. 7 (S13).
만약, 교외지역과 같이 셀의 반경이 커서 기지국과 기지국 사이의 거리가 상당히 먼 경우는, 가입자가 속해 있는 셀의 기지국에 설치된 배열 안테나 시스템이 계산한 단말기 신호의 수신각도(AOA)만이 수신각도 계산부(703)로 전달된다.If the radius of the cell is large and the distance between the base station and the base station is large, such as in a suburban area, only the receiving angle (AOA) of the terminal signal calculated by the array antenna system installed in the base station of the cell to which the subscriber belongs is calculated Is passed to the part 703.
그럼, 상기와 같이 구한 도착시간 데이터(toa_1, toa_2, ..., toa_N)와 수신각도 데이터(aoa_1, aoa_2, ..., aoa_N)를 이용하여 단말기의 위치를 결정하는 과정을 도6의 예시도를 참조하여 설명하면 다음과 같다.6 illustrates a process of determining the position of the terminal using the arrival time data toa_1, toa_2, ..., toa_N and the reception angle data aoa_1, aoa_2, ..., aoa_N obtained as described above. Referring to the drawings as follows.
먼저, 1번 기지국(601)에 대한 도착시간과 수신각도(toa_1, aoa_1)을 이용하여, 1번 기지국을 중심으로 반경이 R1(toa_1*c, 여기서 c는 빛의 속도)인 가상의 원을 그리고, 수신각도(aoa_1) 방향으로 가상의 선을 긋는다.First, using the arrival time and reception angles (toa_1, aoa_1) for the first base station 601, a virtual circle having a radius of R1 (toa_1 * c, where c is the speed of light) around the first base station Then, an imaginary line is drawn in the direction of the reception angle aoa_1.
이에 따라, 상기 1번 기지국(601)의 가상의 원과 가상의 선이 교차하는 지점을 단말기의 제1 추정위치 #1(x_1, y_1)로 설정하고(S14), 마찬가지 방식에 의해 각 기지국으로부터 구한 도착시간(TOA)과 수신각도(AOA)의 쌍을 이용하여, 각 기지국에 의한 추정위치 #N(x_N, y_N)를 설정한다.Accordingly, the point where the imaginary circle and the imaginary line of the first base station 601 intersect is set to the first estimated position # 1 (x_1, y_1) of the terminal (S14). The estimated position #N (x_N, y_N) by each base station is set using the pair of the obtained arrival time TOA and reception angle AAO.
본 실시예에서는 세 개의 기지국에 의해 세 개의 추정위치(#1, #2, #3)를 설정하게 된다.In the present embodiment, three estimated positions # 1, # 2, and # 3 are set by three base stations.
이에 따라, 상기 각 추정위치(#1~#N)에 대한 x 좌표의 평균값((x_1 + x_2 + ... x_N)/N)과 y좌표의 평균값((y_1 + y_2 + ... + y_N)/N)을 구하여 그 평균 좌표값(X, Y)을 단말기의 최종위치로 결정하게 된다(S15). Accordingly, the average value of the x coordinate ((x_1 + x_2 + ... x_N) / N) and the average value of the y coordinate ((y_1 + y_2 + ... + y_N) for each of the estimated positions # 1 to #N. ) / N) to determine the average coordinate values (X, Y) as the final position of the terminal (S15).
도7은 본 발명에 의한 단말기 위치 추적 시스템의 구성을 보인 블록도로서, 이에 도시한 바와 같이 이동통신 교환국(701)은 각 기지국에서 수신된 신호를 입력받아, 다수의 기지국을 중심으로 도착시간 계산부(702)를 통해서 계산된 거리를 반경으로 하는 가상의 원을 구한다.7 is a block diagram showing the configuration of a terminal location tracking system according to the present invention. As shown in this figure, the mobile communication switching center 701 receives a signal received from each base station, and calculates arrival times around a plurality of base stations. The virtual circle whose radius is the calculated distance through the unit 702 is obtained.
다음, 수신각도 계산부(703)를 통해서 계산된 단말기의 수신방향으로 가상의 선을 그어 상기 가상의 원과 교차되는 지점의 위치를 추정한다.Next, a virtual line is drawn in the reception direction of the terminal calculated by the reception angle calculator 703 to estimate the position of the point intersecting the virtual circle.
상기와 같이 복수의 가상위치(#1∼#N)가 추정되면, 위치 결정부(704)는 상기 가상위치의 x,y의 평균 좌표를 구하여 최종 위치를 결정하게 된다.When the plurality of virtual positions # 1 to #N are estimated as described above, the positioning unit 704 determines the final position by obtaining the average coordinates of x and y of the virtual position.
이와 같이 계산된 위치는 자동적으로 CDMA 셀룰러 망을 이용해서 가입자의 위치 정보를 필요로 하는 곳(응용서버)(705)으로 전송된다.The calculated position is automatically transmitted to the location (application server) 705 that needs the subscriber's location information using the CDMA cellular network.
또한, 상기 실시예에서는 구체적인 설명을 생략하였지만 단말기의 위치를 추적하는 또 다른 방법으로는, 가입자가 단말기의 특정버튼을 눌렀을 때 신호가 일정한 시간 간격으로 순차적으로 여러 번 전송되게 하고, 그때 마다 단말기의 위치를 계산하여 그 추정위치(X_1, Y_1), (X_2, Y_2), .., (X_M, Y_M)의 평균좌표를 구하여 최종 위치를 결정하게 하는 것도 가능하며, 기본 데이터(거리, 방향데이터)가 보다 정확할 경우 본 발명에 의해 구하는 최종 추정위치는 기존의 추정위치에 비해서 더욱 정확한 위치를 추정할 수 있게 된다.In addition, in the above embodiment, although a detailed description is omitted, as another method of tracking the location of the terminal, when the subscriber presses a specific button of the terminal, the signal is sequentially transmitted several times at regular time intervals. It is also possible to calculate the position and determine the final position by calculating the average coordinates of the estimated positions (X_1, Y_1), (X_2, Y_2), .., (X_M, Y_M), and basic data (distance, direction data). If is more accurate, the final estimated position obtained by the present invention can estimate the position more accurate than the existing estimated position.
이상에서 설명한 바와 같이 본 발명 이동통신 단말기의 위치 추적 장치 및 방법은, 도심지역에서 기지국 수에 비례하여 다수의 가상 추정위치에 대한 좌표 평균값으로 단말기의 위치를 결정함으로써, 단말기의 위치추적 성능을 향상시킬 수 있도록 하는 효과가 있다.As described above, the apparatus and method for tracking a location of a mobile communication terminal according to the present invention improves the location tracking performance of a terminal by determining the location of the terminal by a coordinate average value of a plurality of virtual estimated locations in proportion to the number of base stations in an urban area. It has the effect of making it work.
도 1은 종래 GPS 위성을 이용한 가입자의 위치추정 시스템을 설명하기 위한 예 시도.1 is an example attempt to explain a subscriber location system using a conventional GPS satellite.
도 2는 종래 도착시간을 이용한 단말기의 위치 추적 방법을 설명하기 위한 예시도. 2 is an exemplary view for explaining a location tracking method of a terminal using a conventional arrival time.
도 3은 종래 수신각도를 이용한 단말기의 위치 추적 방법을 설명하기 위한 예시도.Figure 3 is an exemplary view for explaining a location tracking method of a terminal using a conventional receiving angle.
도 4는 종래 도착시간 차이를 이용한 단말기의 위치 추적 방법을 설명하기 위한 예시도.Figure 4 is an exemplary view for explaining a location tracking method of a terminal using a conventional arrival time difference.
도 5는 본 발명에 의한 단말기의 위치 추적 방법을 보인 순서도.Figure 5 is a flow chart illustrating a location tracking method of the terminal according to the present invention.
도 6은 상기 도5에 의한 위치 추적 과정을 보다 구체적으로 설명하기 위해 보인 예시도.Figure 6 is an exemplary view shown to explain in more detail the location tracking process according to FIG.
도 7은 발명에 의한 단말기 위치 추적 시스템의 구성을 보인 블록도.Figure 7 is a block diagram showing the configuration of a terminal location tracking system according to the invention.
*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***
701 : 이동통신 교환국 702 : 도착시간 계산부701: mobile communication switching center 702: arrival time calculation unit
703 : 수신각도 계산부 704 : 위치 결정부703: reception angle calculation unit 704: position determination unit
705 : 응용서버705: Application Server
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Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0021456A KR100480045B1 (en) | 2001-04-20 | 2001-04-20 | Position monitoring apparatus and method for mobile communication device |
| EP20020006908 EP1251709B1 (en) | 2001-04-20 | 2002-03-26 | Estimating the position of a mobile communications terminal by combining measurements of signals exchanged between the mobile teminal and base stations |
| AT02006908T ATE317625T1 (en) | 2001-04-20 | 2002-03-26 | POSITION DETERMINATION OF A MOBILE COMMUNICATIONS TERMINAL BASED ON A COMBINATION OF MEASUREMENTS OF SIGNALS EXCHANGED BETWEEN THE MOBILE COMMUNICATIONS TERMINAL AND BASE STATIONS |
| DE2002609051 DE60209051T2 (en) | 2001-04-20 | 2002-03-26 | Location determination of a mobile communication terminal based on a combination of measurements of signals exchanged between the mobile communication terminal and base stations |
| ES02006908T ES2257477T3 (en) | 2001-04-20 | 2002-03-26 | ESTIMATION OF THE POSITION OF A MOBILE COMMUNICATION TERMINAL THROUGH THE COMBINATION OF INTERCHANGED SIGNAL MEASURES BETWEEN THE MOBILE TERMINAL AND BASE STATIONS. |
| JP2002100591A JP3820177B2 (en) | 2001-04-20 | 2002-04-02 | Apparatus and method for estimating position of mobile communication terminal |
| CNB021057591A CN1320793C (en) | 2001-04-20 | 2002-04-17 | Device and method for judging position of mobile communication terminal |
| US10/125,531 US7057557B2 (en) | 2001-04-20 | 2002-04-19 | Apparatus and method for estimating position of mobile communication terminal |
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| KR10-2001-0021456A KR100480045B1 (en) | 2001-04-20 | 2001-04-20 | Position monitoring apparatus and method for mobile communication device |
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| KR100721517B1 (en) * | 2004-09-20 | 2007-05-23 | 삼성전자주식회사 | Apparatus and method for determining a position of mobile terminal equipment |
| KR100701950B1 (en) * | 2005-03-04 | 2007-03-30 | 엘지전자 주식회사 | Location information providing system of mobile communication terminal and its operation method |
| KR100704793B1 (en) * | 2005-06-17 | 2007-04-09 | 길 용 노 | Position measurement system and position measurement method using propagation time difference |
| KR100833300B1 (en) * | 2007-02-05 | 2008-05-29 | (주)래디안트 | Repeater signal determination method and determination device using the same |
| KR100953435B1 (en) * | 2008-02-14 | 2010-04-20 | 영남대학교 산학협력단 | Positioning method combining the AF method and the TB method using two base station signals |
| CN110602781A (en) * | 2018-06-13 | 2019-12-20 | 索尼公司 | Electronic device, user equipment, wireless communication method, and storage medium |
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| KR20000040319A (en) * | 1998-12-17 | 2000-07-05 | 윤종용 | Apparatus and method for estimating position of mobile communication terminal |
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