Start-to-finish reservations in distributed MAC protocols...

Details Start-to-finish reservations in distributed MAC protocols... Start-to-finish reservations in distributed MAC protocols...

2011-01-04

2011-01-04

Corsaro, Nick (Department: 2617)

Multiplex communications

Channel assignment techniques

Arbitration for access to a channel

C370S230000, C370S395200

Reexamination Certificate

active

07864796

ABSTRACT:
A method, apparatus and computer program product for providing start-to-finish reservations in distributed MAC protocols for wireless LANs. Each node maintains a corresponding time period (NAV) during which the node must refrain from transmitting on a channel of a plurality of traffic channels. Each NAV is set by detecting a reservation request (RRQ) or a reservation response (RRS), each corresponding NAV comprising the larger of a RRQ NAV value and a RRS NAV value. Each node declines to reserve a traffic channel while the NAV is non-zero, and declines to transmit on a channel when the node detects the occurrence of a transmission on the channel or that the NAV is non-zero. The RRQ NAV is reset while a corresponding RRS NAV is decremented when a reservation is cancelled, and the RRS NAV is reset while a corresponding RRQ NAV is decremented when the reservation time period expires.

REFERENCES:
patent: 2005/0002355 (2005-01-01), Takano
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patent: 2005/0063408 (2005-03-01), Famolari
patent: 2006/0153152 (2006-07-01), Kondylis et al.
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patent: 2006/0165036 (2006-07-01), Chandra et al.
patent: 2008/0232335 (2008-09-01), Del Prado Pavon et al.

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