Optimizing Local Capacity of Wireless Ad Hoc Networks

Details Optimizing Local Capacity of Wireless Ad Hoc Networks Optimizing Local Capacity of Wireless Ad Hoc Networks

2011-11-09

arxiv.org/abs/1111.2315v1

Computer Science

Networking and Internet Architecture

This work has been presented in the 4th IFIP Wireless and Mobile Networking conference (WMNC 2011)

Scientific paper

In this work, we evaluate local capacity of wireless ad hoc networks with several medium access protocols and identify the most optimal protocol. We define local capacity as the average information rate received by a receiver randomly located in the network. We analyzed grid pattern protocols where simultaneous transmitters are positioned in a regular grid pattern, pure ALOHA protocols where simultaneous transmitters are dispatched according to a uniform Poisson distribution and exclusion protocols where simultaneous transmitters are dispatched according to an exclusion rule such as node coloring and carrier sense protocols. Our analysis allows us to conjecture that local capacity is optimal when simultaneous transmitters are positioned in a grid pattern based on equilateral triangles and our results show that this optimal local capacity is at most double the local capacity of simple ALOHA protocol. Our results also show that node coloring and carrier sense protocols approach the optimal local capacity by an almost negligible difference.

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