Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-04-04
2006-04-04
Nguyen, Chau (Department: 2661)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C455S437000
Reexamination Certificate
active
07023822
ABSTRACT:
The present invention is a novel method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system. The reverse link intergenerational handoff initialization method and apparatus of the present invention measures and compares parameters between a serving base station of one generation and a target base station of another generation to determine the best possible handoff initiation time instant for performing a reverse link intergenerational hard handoff. The present invention can utilize one of several embodiments to determine the best possible handoff initiation time instant. A pilot signal strength embodiment of the present invention determines a handoff initiation time instant based upon the total pilot signal strength of both a serving and target base station. The Eb/Ntembodiment determines a handoff initiation time instant based upon Eb/Nt(ratio of average power per bit to total received power spectral density) values of both a serving and a target base station. The method and apparatus of the present invention decreases the probability of degraded or dropped calls during intergenerational handoffs.
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Anderson Kraig Lamar
Czaja Stanislaw
Yang Hong Kui
Jaquez & Associates
Jaquez, Esq. Martin J.
Moore Ian N.
Nguyen Chau
Via Telecom Co., Ltd.
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