| 摘要 |
A NUMBER OF DIFFERENT SOLUTIONS ARE DISCLOSED FOR GATHERING ACCESS DELAY AND DISTANCE MEASUREMENT INFORMATION FOR USE IN DETERMINING THE POSITION OF CELLULAR MOBILE STATION. FOR ALL OF THESE SOLUTIONS, ONE FREQUENCY AND ONE UPLINK CHANNEL IN EACH CELL ARE DEDICATED FOR POSITION DETERMINATION. IN ONE ASPECT OF THE PRESENT INVENTION, A METHOD IS PROVIDED FOR DETERMINING THE POSITION OF A MOBILE STATION USING HANDOVER PROCEDURES FOR ALL OF THE CELLS OR CERTAIN PREDIFINED CELLS IN THE NETWORK. ONE UPLINK CHANNEL IS DEDICATED WITHIN EACH CELL IN THE NETWORK TO BE USED FOR POSITION DETERMINATION.THESE POSITIONING CHANNELS CONTIONUOUSLY LISTEN FOR HANDOVER ACCESS REQUEST. CELLS DETECTING THE ACCESS BURSTS CAN MEASURE THE ACCESS DELAY AND DETERMINE THE DISTANCE TO THE REQUESTING MOBILE STATION. A TRIANGULATION CALCULATION IS USED TO PINPOINT THE MOBILE STATION''S POSITION. IN ANOTHER ASPECT OF THE PRESENT INVENTION, A METHOD IS PROVIDED FOR DETERMINATING THE POSITION OF A MOBILE STATION USING DETERMINATION PROCEDURES FOR ALL OF THE CELLS OR CERTAIN PREDEFINED CELLS IN THE NETWORK.(
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