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Recent studies on queue-length-based randomized link scheduling algorithms have shown their throughput-optimality. But simulation results indicate that the packet delay in such algorithms can be quite large, even when the traffic intensity is low compared with the network capacity. The reason can be traced to the fact that these algorithms need the queues to be sufficiently large before the links...
The ad hoc deployment of a sensor network causes unpredictable patterns of connectivity and varied node density, resulting in uneven bandwidth provisioning on the forwarding paths. When congestion happens, some sensors may have to reduce their data rates. It is an interesting but difficult problem to determine which sensors must reduce rates and how much they should reduce. This paper attempts to...
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