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Based on whether the competing active nodes are forwarding packets of the same flow, the channel access contention in multi-hop wireless networks can be classified into intra-flow contention and inter-flow contention. In this paper, we analyze the effect of intra-flow contention on multi-hop network performance. First, we demonstrate that intra-flow contention makes up a large proportion of contention...
The Distributed Coordination Function (DCF) of IEEE 802.11 is one of most commonly used MAC protocol in channel-shared wireless network, but it can't support differentiated services among various applications. In this paper, a novel probability back-off MAC protocol is proposed to provide service differentiation as well as enhance the overall system throughput. We analyze our scheme by using a Markov...
TCP unfairness is a widely existent problem over wireless mesh networks. The characters of shared wireless medium and location dependency conduce to the phenomenon. A Markov-based analytical model is proposed to analyze the influence factors of this problem in this paper. The unfairness issue over typical IEEE 802.11 based wireless mesh network was analyzed. Markov technique is adopted in analyzing...
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