Spatial/Temporal Back-off Mechanism for Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) Medium Access Control Protocols for Wireless Networks

Charles Colbourn (Inventor), Violet Syrotiuk (Inventor)

Research output: Patent

Abstract

This invention addresses the problem of throughput in networks by proposing a new back-off mechanism for a medium access control protocol. The mechanism uses transmission power control to control the power level (and therefore the distance) that a node transmits. Hence it takes advantage of the spatial domain in the back-off procedure.Existing protocols, such s the ubiquitous IEEE 802.11 used in wireless networks, makes use of the temporal domain in the back-off procedure (via binary exponential back-off) to increase throughput.When spatial back-off is combined with temporal back-off, the energy utilized by the transceiver is greatly reduced, while the throughput per unit energy is increased. This is the tremendous advantage over competing systems, not just in throughput achieved, but also in energy saved.
Original languageEnglish (US)
StatePublished - Jun 20 2005

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