Throughput analysis of asynchronous CSMA protocols on star-like LAN topologies

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 assumpt...

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Bibliographic Details
Main Authors: Vukovic, I., Vastola, K.S.
Format: Conference Proceeding
Language:English
Subjects:
Access protocols
Local area networks
Multiaccess communication
Network topology
Optical fiber LAN
Repeaters
Telecommunication traffic
Throughput
Traffic control
Wireless LAN
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Summary: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.< >
DOI:10.1109/ICC.1992.268043