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On fair sharing of spectrum via CSMA Murat Alanyali and Maxim Dashouk
 

Summary: On fair sharing of spectrum via CSMA
Murat Alanyali and Maxim Dashouk
Department of Electrical and Computer Engineering
Boston University
Abstract-- We 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 peri-
odic bursts that are offset in time so as to avoid packet collisions.
We study TDMA in a framework that admits propagation delays
and hidden terminals, and provide a distributed algorithm that
achieves feasible transmission rates.
I. INTRODUCTION
We study two different philosophies for medium access in
spatially dispersed wireless networks. The first one, which
we refer to as "full-CSMA" here, aims to model the core
operational concept of MAC strategy adopted in 802.11 net-
works. Under this approach a terminal transmits if it senses
an idle channel, and delays its transmissions via a backoff
mechanism if there are indications of contention in channel

  

Source: Alanyali, Murat - Department of Electrical and Computer Engineering, Boston University

 

Collections: Engineering