Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-04-17
2007-04-17
Corsaro, Nick (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S561000, C455S446000, C455S434000, C370S328000
Reexamination Certificate
active
11023861
ABSTRACT:
Network Allocation Vector (NAV) and “beam access control” (BAC) techniques are provided to address data collision problems in WLANs wherein APs provide wireless network access in a service area defined by multiple sectors via use of a switchable antenna system or the like. Preferably, every time the AP visits a sector and before the AP moves on to the next sector, the AP can set the NAV equal to the time it will take until its next visit. Alternatively, or in addition, a BAC bit is transmitted by an AP to control access to the AP by WTRUs disposed in a service sector in which the BAC is transmitted.
REFERENCES:
patent: 2003/0033394 (2003-02-01), Stine
patent: 2004/0023678 (2004-02-01), Fredriksson
patent: 2004/0171407 (2004-09-01), Ninomiya
patent: 2004/0242273 (2004-12-01), Corbett et al.
patent: 2005/0003865 (2005-01-01), Lastinger et al.
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patent: 2005/0282553 (2005-12-01), Lastinger et al.
patent: 2006/0040709 (2006-02-01), Adachi et al.
Hole, “Indoor WLAN Design,” Part III: Understanding the 802.11 MAC, May. 3, 2003.
Chandra Arty
Iacono Ana Lucia
Zhao Zheng
Brandt Christopher M.
Corsaro Nick
InterDigital Technology Corporation
Volpe and Koenig
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