Abstract | ||
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Adaptive CSMA algorithms have attracted considerable attention, due to their throughput optimality, utility maximizing properties, and amenability to simple distributed implementation. In this paper, we investigate the impact of heavy-tailed traffic on the performance of a queue length based adaptive CSMA algorithm. Specifically, we consider two conflicting links that share a channel using adaptive CSMA. One of the links serves heavy-tailed traffic, while the other link serves light-tailed traffic. Our main contribution is in demonstrating a threshold phenomenon in the relationship between the arrival rates and the queue backlog distributions. In particular, we show that when the arrival rate of the light-tailed traffic is less than a threshold value, the light-tailed traffic experiences a light-tailed queue backlog at steady state, whereas for arrival rates above the same threshold, the light-tailed traffic experiences a heavy-tailed queue backlog. Comparing this result to a corresponding result for max-weight scheduling [8], we conclude that adaptive CSMA is potentially more robust to bursty traffic, compared to max-weight scheduling. |
Year | DOI | Venue |
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2012 | 10.1109/ITA.2012.6181778 | Information Theory and Applications Workshop |
Keywords | Field | DocType |
carrier sense multiple access,queueing theory,scheduling,telecommunication traffic,adaptive CSMA algorithm,arrival rates,conflicting link,heavy-tailed traffic,light-tailed traffic,queue backlog distribution,queue length,scheduling algorithm,throughput optimality,utility maximizing property | Wireless network,Mathematical optimization,Random variable,Computer science,Scheduling (computing),Server,Queue,Communication channel,Computer network,Queueing theory,Throughput | Conference |
ISBN | Citations | PageRank |
978-1-4673-1473-2 | 2 | 0.38 |
References | Authors | |
9 | 3 |
Name | Order | Citations | PageRank |
---|---|---|---|
Krishna Jagannathan | 1 | 22 | 2.48 |
Libin Jiang | 2 | 7 | 1.23 |
Eytan Modiano | 3 | 3714 | 314.44 |