Recovering the reverse link in a cellular mobile...

Details Recovering the reverse link in a cellular mobile... Recovering the reverse link in a cellular mobile...

2004-06-30

2008-09-30

Lee, John J. (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S069000, C455S067110, C455S452200

Reexamination Certificate

active

07430431

ABSTRACT:
Operation commences with the cellular network infrastructure setting up a forward link and a reverse link with a cellular mobile station. The cellular network infrastructure transmits signals to the cellular mobile station on the forward link and receives signals from the cellular mobile station on the reverse link. The cellular network infrastructure monitors the quality of the reverse link. When the reverse link quality level meets a reverse link lost criteria, the cellular network infrastructure enters reverse link recovery mode of operation in which the transmit power of the forward link is increased in an attempt to recover the reverse link. During the reverse link recovery mode of operation, the cellular network infrastructure may determine that the reverse link quality meets a reverse link recovered criteria. When the reverse link quality meets the reverse link recovery criteria, the cellular network infrastructure exits the reverse link recovery mode of operation for the cellular mobile station and resumes normal power control operations. When the cellular network infrastructure determines that the reverse link recovery mode of operations fail, the cellular network infrastructure ceases forward link transmissions to the cellular mobile station and the call is dropped.

REFERENCES:
patent: 5982760 (1999-11-01), Chen
patent: 6411817 (2002-06-01), Cheng et al.
patent: 6463046 (2002-10-01), Faber
patent: 2004/0229619 (2004-11-01), Adatrao et al.
patent: 2005/0124371 (2005-06-01), Harris et al.

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