Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-12-17
2000-12-26
Maung, Nay
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455433, 342450, 342457, H04Q 720
Patent
active
061672750
ABSTRACT:
A wireless communication system (100) that includes a plurality of base sites (101-103) employs a method and apparatus for determining a location of a communication unit (107) in the system. Upon transmission of an information signal (109) by the communication unit, each of the base sites receives the transmitted information signal. A serving base site (e.g., 103) determines a stream of information symbols from the information signal, derives timing information based on the information signal and the stream of information symbols, and conveys the stream of information symbols preferably to at least two non-serving base sites (101-102). The non-serving base sites determine respective timing information based on the information signal received from the communication unit and the stream of information symbols received from the serving base site. The location of the communication unit is then determined by either a base site or a stand-alone processing device (105) based on the serving base site's and non-serving base site's timing information.
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Birchler Mark A.
Jasper Steven C.
Oros Nicholas C.
Crilly Daniel C.
Jacobs Jeffrey K.
Maung Nay
Motorola Inc.
Redmon Joy
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