MOBILE STATION POSITION LOCATING METHOD
First Claim
1. A mobile station position locating method for locating a position of the mobile station based on propagation times of the radio waves, transmitted and received between a mobile station and plural base stations, and positions of the plural base stations, the mobile station position locating method comprising:
- base-station position calculating step that calculates the positions of the plural base stations, based on the propagation times of the radio waves transmitted from plural stationary transmitters set up at plural known positions in a position locating space for the mobile station respectively to the plural base stations, and the known positions of the plural stationary transmitters.
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Abstract
A mobile station position locating method is provided for accurately locating positions of base stations without actually locating the positions of the base stations for locating the mobile station. In a transmit and receiving time detecting step (S6, S7), transmitting times ts1 to ts4 of radio waves transmitted from plural stationary transmitters C1 to C4 set up in known positions, and receiving times s1 to s4, i.e., propagation times of the radio waves are detected. In a base-station position calculating step (S4), positions (Xn, Yn, Zn; n=1 to 4) of the base stations K1 to K4 are calculated based on propagation distances l1, l2, l3 and l4 between the plural stationary transmitters C1 to C4, and a predetermined base station K1 calculated based on the transmitting times ts1 to ts4 of the receiving times s1 to s4 of the radio waves, and the known positions (xn, yn, zn; n=1˜4) of the stationary transmitters C1 to C4. This enables the positions of the base stations K1 to K4 to be accurately located without actually measuring the positions of thereof.
25 Citations
6 Claims
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1. A mobile station position locating method for locating a position of the mobile station based on propagation times of the radio waves, transmitted and received between a mobile station and plural base stations, and positions of the plural base stations, the mobile station position locating method comprising:
base-station position calculating step that calculates the positions of the plural base stations, based on the propagation times of the radio waves transmitted from plural stationary transmitters set up at plural known positions in a position locating space for the mobile station respectively to the plural base stations, and the known positions of the plural stationary transmitters. - View Dependent Claims (2, 3, 4, 5, 6)
Specification