Some Utilization Analyses for ALOHA and CSMA Protocols (2000)

 

 

In contention-based local-area networks we have all stations on a common channel, such as a cable or a specific radio frequency, and the stations contend with each other for access to that channel. Only one station can transmit at a time, so if two or more stations attempt to use the channel at the same time (a collision), all of their frames will be garbled, and some mechanisms must be devised to (a) detection the problem and (b) to arrange for retransmission. Here we will be interested in the efficiencies of such networks ... Let S denote the mean number of “original” frames generated at all nodes of a contention-based network (ALOHA, CSMA, etc.) per unit time. By “original” we mean that we are not including retransmitted frames. Then let G denote the mean number of all frames, original or retries, generated per unit time. [via]
http://heather.cs.ucdavis.edu/~matloff/Networ...

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Some Utilization Analyses for ALOHA and CSMA Protocols

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