On Fair Sharing of Spectrum Via CSMA

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Executive Summary

The authors contrast CSMA and TDMA schemes for medium access in spatially dispersed wireless networks under the primary interference model. CSMA is based on random access via dynamically tuned parameters, whereas TDMA involves periodic bursts that are offset in time so as to avoid packet collisions. They study TDMA in a framework that admits propagation delays and hidden terminals, and provide a distributed algorithm that achieves feasible transmission rates. They study two different philosophies for medium access in spatially dispersed wireless networks. The first one, which they refer to as "Full-CSMA" here, aims to model the core operational concept of MAC strategy adopted in 802.11 networks.

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