Showing papers by "Kun Tan published in 2003"
01 Dec 2003
TL;DR: This work proposes a novel routing framework named shortest expected path routing (SEPR), which builds up a stochastic model of the ad hoc network and maintains it in a distributed way and proposes a new routing metric, called expected path length.
Abstract: Ad hoc communication among wireless enabled smart devices is increasingly playing an important role in coordinating distributed applications. Existing ad hoc routing algorithms usually assume the existence of end-to-end path connecting communication nodes. However, due to the power limitation, radio coverage and geography distribution of cooperating nodes, in some scenarios this assumption is unlikely to be valid. We address the issue of data routing in partially connected ad hoc networks. In this situation, data propagation is achieved via mainly pair-wise communication between any two nodes when they are in vicinity. We propose a novel routing framework named shortest expected path routing (SEPR). Instead of blindly flooding messages in the network, SEPR builds up a stochastic model of the ad hoc network and maintains it in a distributed way. A new routing metric, called expected path length, is proposed. By guiding messages flow to shortest expected path nodes, our approach dramatically reduces the number of unnecessary message copies as well as increases the message delivering rate. With a simulation, we evaluate the effectiveness and the efficiency of our approach.
110 citations
25 May 2003
TL;DR: This paper proposes an end-to-end rate control protocol that can efficiently recover from rate reduction of heavy burst loss, while having good TCP-friendliness under low loss cases.
Abstract: Evaluating the end-to-end congestion control protocols in heterogeneous wired-cum-wireless environment is becoming important and challenging, because wireless networks have their own characteristics such as high burst packet loss due to deep fading, handoff, and roaming. This paper addresses the rate control protocol, end-to-end, for streaming media in mobile wireless Internet. Specifically, we propose an end-to-end rate control protocol that can efficiently recover from rate reduction of heavy burst loss, while having good TCP-friendliness under low loss cases. Analysis and simulation results demonstrate the efficiency, fairness, and TCP-friendliness of our approach for streaming media in heterogeneous mobile wireless Internet.
13 citations