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MOBICOM
2009
ACM

Capacity of large-scale CSMA wireless networks

8 years 10 months ago
Capacity of large-scale CSMA wireless networks
In the literature, asymptotic studies of multi-hop wireless network capacity often consider only centralized and deterministic TDMA (time-division multi-access) coordination schemes. There have been fewer studies of the asymptotic capacity of large-scale wireless networks based on CSMA (carrier-sensing multi-access), which schedules transmissions in a distributed and random manner. With the rapid and widespread adoption of CSMA technology, a critical question is that whether CSMA networks can be as scalable as TDMA networks. To answer this question and explore the capacity of CSMA networks, we first formulate the models of CSMA protocols to take into account the unique CSMA characteristics, not captured by existing interference models in the literature. These CSMA models determine the feasible states, and consequently the capacity of CSMA networks. We then study the throughput efficiency of CSMA scheduling as compared to TDMA. Finally, we tune the CSMA parameters so as to maximize th...
Chi-Kin Chau, Minghua Chen, Soung Chang Liew
Added 28 May 2010
Updated 28 May 2010
Type Conference
Year 2009
Where MOBICOM
Authors Chi-Kin Chau, Minghua Chen, Soung Chang Liew
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