Medium Access Over Time-Varying Channels With Limited Sensing Cost

Recent studies on MAC scheduling have shown that Carrier Sense Multiple Access (CSMA) can be controlled to be achieve optimality in terms of throughput or utility. These results imply that just a simple MAC algorithm without message passing is possible to achieve high performance guarantee. However, such studies are conducted only on the assumption that channel conditions are static. Noting that the main drive for achieving optimality in optimal CSMA is to let it run a good schedule for some time, formally referred to as the mixing time, it is under-explored how such optimal CSMA performs for time-varying channel conditions.

Provided by: Cornell University Topic: Mobility Date Added: Jun 2012 Format: PDF

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