Pulse or digital communications – Spread spectrum – Frequency hopping
Reexamination Certificate
2004-05-17
2011-12-27
Lam, Kenneth (Department: 2611)
Pulse or digital communications
Spread spectrum
Frequency hopping
C375S130000, C375S135000, C375S136000, C375S259000
Reexamination Certificate
active
08085831
ABSTRACT:
Inter-sector interference for a target user in a sector may be controlled by selectively blanking or attenuating transmit powers for interfering users in neighboring sectors whenever their transmissions collide. The sector provides the frequency hopping (FH) sequence or subband usage for the target user to the neighboring sectors. Each neighboring sector uses the target user's FH sequence to form a blanking pattern. Each neighboring sector then either blanks or reduces transmit power for each subband in its blanking pattern. Each user in each neighboring sector receives either (1) punctured symbols for subbands in the blanking pattern, if blanking is performed, or (2) lower energy symbols for these subbands, if attenuation is performed. In any case, the target user and each neighboring user may process their received symbols in the normal manner and do not need to be informed of the blanking/attenuation.
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Fales Mary A.
Lam Kenneth
Minhas Sandip S.
Qualcomm Incorporated
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