Mobility

Accurate and Energy-Efficient Congestion Level Measurement in Ad Hoc Networks

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Executive Summary

Congestion in ad hoc networks not only degrades throughput, but also wastes the scarce energy due to a large number of retransmissions and packet drops. For efficient congestion control, an accurate and timely estimation of resource demands by measuring the network congestion level is necessary. Unlike the wired networks, congestion level measurement in ad hoc networks is more difficult due to time-variant channel capacity, contention among neighboring nodes, and non-deterministic node scheduling. Congestion in ad hoc networks not only degrades throughput, but also wastes the scarce energy due to a large number of retransmissions and packet drops. For efficient congestion control, an accurate and timely estimation of resource demands by measuring the network congestion level is necessary.

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