Techniques for facilitating communication handoffs

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Reexamination Certificate

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Details

C455S432100, C455S067160, C455S550100

Reexamination Certificate

active

07933599

ABSTRACT:
Various schemes are provided that facilitate a communication handoff from a current base station to a target base station. One feature provides for reducing the search space that a base station searches by providing it with the position/location and/or velocity of an access terminal with which it attempts to communicate. Having the position and/or velocity of the access terminal, a current or target base station is able to reduce its search space (e.g., direction, frequency range, and/or time window) for the access terminal. Another feature provides for selectively and gradually increasing the power of a pilot signal originating from the access terminal during the handoff acquisition period to a target base station. By increasing the pilot signal power, the base station has a better chance of acquiring the signal and do so more quickly.

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Korean OA dated Aug. 21, 2009, for US Application Serial No. 10-2007-7024776, 7 pages.
Argentina OA dated Feb. 11, 2010 for US Application Serial No. P 06 01 01233, 2 pages.

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