Interference-Aware Service Differentiation in Multihop Wireless Networks

Kun-da Wu, Wanjiun Liao

Abstract: In this paper, we provide service differentiation with interference consideration for traffic of different priorities in multi-hop wireless networks. Specifically, we propose a framework to support different service levels in terms of queuing delays at each intermediate path node for concurrent sessions of different priorities. We formulate an interference-aware bandwidth allocation problem which jointly considers the interference and resource allocation problems. We then develop a sub-gradient algorithm to solve this problem in a distributed manner. The simulation results show that our proposed algorithm achieves different levels of bandwidth allocation efficiently with a limited number of iterations. In addition, our algorithm scales well when the number of sessions and the size of the session increase.