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Opportunistic routing is a new design trend of wireless routing, which can dramatically improve the end-to-end throughput over traditional routing by judiciously utilizing the broadcasting nature of wireless network. However, the global scheduling scheme it adopts restricts its application in large-scale wireless network, due to the big waste of the end-to-end transmission latency and the computation...
In this paper, we propose a path metric called multi-radio achievable bandwidth (MPvAB) to accurately capture the impacts of inter/intra-flow interferences and space/channel diversity along a path. We consider a practical scenario that an end-to-end path may consist of both multi-radio hops and single-radio hops, where different channels do not interfere with each other but interferences exist within...
This paper studies how to select a path with the minimum cost in terms of expected end-to-end delay (EED) in a multi-radio wireless mesh network. Different from the previous efforts, the new EED metric takes the queuing delay into account, since the end-to-end delay consists of not only the transmission delay over the wireless links but also the queuing delay in the buffer. In addition to minimizing...
Due to their dynamic topologies, providing quality of service (QoS) in wireless ad hoc networks introduces major new challenges to the research community. Now, the commercially available ad-hoc network products are those based on the IEEE802.11 Distributed Coordination Function (DCF). Cooperative communications fully leverages the broadcast nature of the wireless channel and spatial diversity, thereby...
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