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Adaptive On-The-Go Scheduling for End-to-End Delay Control in TDMA-Based Wireless Mesh Networks

Abstract : Providing end-to-end delay bound for real-time applications is a major challenge in wireless mesh networks (WMNs) because the bandwidth requirements of flows are time-varied and the channel condition is unstable due to the wireless interference between the links. In this paper, we present a two-stage slot allocation mechanism in TDMA-based WMNs. First, we assume that the bandwidth requirement of each flow is given in the form of a range and use a distributed algorithm to pre-allocate time slots to each link. Then, we implement an On-The-Go scheduling scheme, which enables each link to schedule its transmission time promptly without coordinating with others. In contrast to traditional approaches, our method allows a degree of control over the collision probability, but it only requires a few control messages and the computational overhead is lower. The simulation results show that our mechanism performs efficiently and flexibly on supporting real-time applications in WMNs.
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Yung-Cheng Tu, Meng Chang Chen, Yeali S. Sun. Adaptive On-The-Go Scheduling for End-to-End Delay Control in TDMA-Based Wireless Mesh Networks. 10th IFIP Networking Conference (NETWORKING), May 2011, Valencia, Spain. pp.263-274, ⟨10.1007/978-3-642-20798-3_20⟩. ⟨hal-01597968⟩



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