Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2008-07-08
2008-07-08
Levitan, Dmitry (Department: 2616)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
Reexamination Certificate
active
11747689
ABSTRACT:
In a wireless local area network (“WLAN”), a system and method for assisting the timing calculation associated with the transmission timing of packets or data frames through the air. The present utilizes the baseband PHY processor to detect the trailing edge of the radio frequency (“RF”) packet and prevents the WLAN device from transmitting for a pre-determined amount of time. This improved system and method thereby frees the medium access controller (“MAC”) from utilizing significant microprocessor cycles for synchronization calculations and thereby increases system throughput and reduces the possibility of fast-turnaround protocol timing errors.
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IEEE—Local and Metropolitan Area Networks, Std 802.11, §12—Physical Layer (PHY) Service Specification, pp. 152-160 Copyright © 1997 IEEE.
Cisco Technology Inc.
Levitan Dmitry
Tucker Ellis & West LLP
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