Multiplex communications – Channel assignment techniques – Carrier sense multiple access
Reexamination Certificate
2004-01-15
2009-10-20
Kumar, Pankaj (Department: 2419)
Multiplex communications
Channel assignment techniques
Carrier sense multiple access
C370S458000
Reexamination Certificate
active
07606257
ABSTRACT:
A method of minimizing collisions in a CSMA/CA wireless data communication system using an access point includes sensing the presence of a client desirous of communication with the access point. A start time slot list having at least one unique start time slot during which the client may begin transmitting can be allocated. The start time slot list to the client can be transmitted. A transmission from the client can be received, wherein such transmission begins only during the start time slot(s) indicated by the start time slot list. Notably, the start time slot list can include a high-priority start time slot and a low-priority start time slot substantially equally displaced in time from a center start time slot. A client capable of receiving the start time slot list can select between the high-priority start time slot and the low-priority start time slot based on a randomizing function.
REFERENCES:
patent: 4560985 (1985-12-01), Strecker et al.
patent: 5355375 (1994-10-01), Christensen
patent: 5742239 (1998-04-01), Siloti
patent: 6408341 (2002-06-01), Feeney et al.
patent: 6678252 (2004-01-01), Cansever
patent: 6963549 (2005-11-01), Jayaraman et al.
patent: 2002/0167961 (2002-11-01), Haartsen
patent: 2002/0181492 (2002-12-01), Kasami et al.
patent: 2003/0099221 (2003-05-01), Rhee
patent: 2003/0108059 (2003-06-01), Yew et al.
patent: 2003/0115369 (2003-06-01), Walter et al.
patent: 2003/0137993 (2003-07-01), Odman
patent: 2003/0198206 (2003-10-01), Cain et al.
patent: 2004/0165562 (2004-08-01), Elaoud et al.
patent: 2004/0233924 (2004-11-01), Bilak et al.
patent: 2004/0264423 (2004-12-01), Ginzburg et al.
patent: 2005/0064817 (2005-03-01), Ginzburg
patent: 2005/0122989 (2005-06-01), Ginzburg et al.
patent: 11261518 (1999-09-01), None
patent: WO 03/019798 (2003-03-01), None
patent: WO 2004/040778 (2004-05-01), None
Barratt Craig H.
McFarland William J.
Atheros Communications Inc.
Bever Hoffman & Harms LLP
Foud Hicham B
Harms Jeanette S.
Kumar Pankaj
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