Joint congestion control and scheduling optimizaton in CSMA-based wireless Ad Hoc network

Abstract

In this paper, we consider the optimal congestion control and scheduling problem for wireless ad-hoc network. Even though there have been many researches for optimizing transport and other layer for wireless ad-hoc network, they are limited either in thier practicality or in efficiency. After studying their prior works, we present another framework based on independent set and propose the longest queue first (LQF) based heuristic algorithm. In addition, we also analyze the structural problems that occur when implementing LQF in the 802.11-based CSMA MAC protocol and we present Backoff time control technique for priority based LQF. In this paper, the proposed TCP and MAC algorithm offers more performance enhancement in efficiency and fairness compared to the existing MAC protocol. The NS-2 simulation results supports our proposal.