Patent ID: 6061337
Filing Date: 2000-05-09
Classification: H04W

Abstract:
A method for providing a telemetry assisted handoff in a wireless system, said wireless system including a plurality of cell sites serving a mobile station, said method comprising the steps of:said mobile station measuring signal time offset of signals from each of a plurality of neighboring cells;said mobile station sending a message to one of said cell sites, said message including said time offsets;determining an approximate position of said mobile station by measuring said time offsets of signals from each of said plurality of neighboring cells;consulting a record of available handoff destinations associated with said approximate position of said mobile station, said record including information about success or failure of prior handoff attempts to said destinations, and determining whether a handoff is appropriate to one of said available handoff destinations selected at least in part based on said information;responsive to determining that a handoff is appropriate to one of said available handoff destinations, initiating a handoff; andresponsive to determining that a handoff is not appropriate to one of said available handoff destinations, refraining from initiating a handoff, thus preventing premature handoff and potential loss of said call.