Arima - Asymmetric Receiver Initiated Multiple Access Power Control Protocol for Wireless Ad-Hoc Networks

Abstract

In a distributed control wireless ad-hoc network, network performance is significantly effected by multi-user interference. In such networks, transmit power control can enhance the energy usage as well as the QoS performance. Although, the effects of hidden/exposed terminals on the system throughput in wireless ad-hoc networks have been studied extensively, the IEEE 802.11 with variable transmit power has to be re-looked in order to optimize the energy and other QoS measures (e.g, bandwidth, throughput). In this paper, we capture the drawbacks of the existing fixed and variable transmission-power control Medium Access Control (MAC) protocols and propose an efficient energy aware receiver initiated variable transmission-power control protocol called Asymmetric Receiver Initiated Multiple Access (ARIMA). It minimizes interference due to the exposed terminal carrier sense nodes at the receiver and hence offers higher network performance. We compare the performance of our proposed protocol with the existing protocols analytically and through exhaustive simulation studies and observe that ARIMA outperforms the existing protocols in terms of throughput and packet transmission probability. This is a simple protocol and can be used in practice.