Adaptive power management in multi-channel multi-radio ad hoc wireless networks

Abstract

In a multi-channel multi-radio (MCMR) wireless network, each user is equipped with multiple transceivers (radios) that can be used simultaneously. Each radio is dynamically tuned to a given carrier frequency with fixed bandwidth, allowing a user to choose from a fixed number of orthogonal channels. Extensive efforts have been devoted to propose efficient channel assignment protocols. One of these protocols is the link layer protocol that is designed to utilize multi-channels multi-radio. The proposed protocol enhances the throughput performance over the protocol that uses a single channel on all hops; however self interference along the route still exists. In this work we use adaptive transmission power management to overcome the self interference. Adaptive transmission power management allows multiple interference-limited concurrent transmissions. Reducing the interference would improve the throughput performance of the network. We use network simulator 2 (NS2) to verify our theoretical expectation, which shows a significant increase in the network's throughput.