Throughput analysis of asynchronous CSMA protocols on star-like LAN topologies
- 2 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
An analysis of asynchronous (unslotted) carrier sense multiple access (CSMA) protocols applied to starlike topologies of local area networks is presented. Networks with a starlike topology include wireless LANs, STARLAN, the unidirectional bus and fiber-optic star topologies. The widely used assumption in starlike networks that the stations are at a constant distance from the repeater is eliminated. In the analysis, the authors explicitly model the spatial distribution of offered traffic through the use of a load intensity function. Results for the case of a uniform load intensity function show the throughput to be significantly larger than in the case of a topology with equidistant stations. It is also shown that at higher loads, for some cases of the load intensity function, the asynchronous protocol has a higher throughput than slotted (synchronous) CSMA.Keywords
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