Soft handoff for reverse link in a wireless communication...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Reexamination Certificate

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Details

C455S450000, C370S330000, C370S331000, C370S329000, C370S341000

Reexamination Certificate

active

07437164

ABSTRACT:
For soft handoff on the reverse link with restrictive reuse, a wireless terminal searches for pilots transmitted by sectors in a wireless system, measures the detected pilots, selects a serving sector (e.g., the strongest received sector), and identifies non-serving sectors that may receive high interference from the terminal. The serving sector assigns the terminal with subband(s) that are usable by the serving sector and unusable by the non-serving sectors. The terminal transmits data symbols on the assigned subbands to the serving and non-serving sectors. These sectors process the reverse link transmission from the terminal and obtain soft-decision symbols, which are estimates of the transmitted data symbols. The soft-decision symbols from co-located sectors may be combined and then decoded to obtain decoded packets. The sectors may also independently decode the soft-decision symbols, and the decoded packets from these sectors may be combined to obtain final decoded packets for the terminal.

REFERENCES:
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patent: 5649292 (1997-07-01), Doner
patent: 6014412 (2000-01-01), Wiese et al.
patent: 6512752 (2003-01-01), H'mimy et al.
patent: 6760438 (2004-07-01), Hui et al.
patent: 7006823 (2006-02-01), Shurvinton et al.
patent: 7069009 (2006-06-01), Li et al.
patent: 2003/0227889 (2003-12-01), Wu et al.
patent: 2120184 (1998-10-01), None
International Search Report - PCT/US05/020180, International Search Authority - European Patent Office, Oct. 13, 2005.

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