Mobility

On the Throughput Capacity of Wireless Multi-Hop Networks With ALOHA, Node Coloring and CSMA

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Executive Summary

The authors quantify the throughput capacity of wireless multi-hop networks with several medium access schemes. They analyze pure ALOHA scheme where simultaneous transmitters are dispatched according to a uniform Poisson distribution and exclusion schemes where simultaneous transmitters are dispatched according to an exclusion rule such as node coloring and carrier sense based schemes. They consider both no-fading and standard Rayleigh fading channel models. Their results show that, under no-fading, slotted ALOHA can achieve at least one-third (or half under Rayleigh fading) of the throughput capacity of node coloring scheme whereas carrier sense based scheme can achieve almost the same throughput capacity as node coloring.

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