Joint synchronization, routing and energy saving in CSMA/CA multi-hop hybrid networks

D. Jurca, J. Hubaux
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引用次数: 5

Abstract

Multi-hop hybrid networks can help providing both high bandwidth and broad coverage for wireless data networks. We focus on CSMA/CA-based networks and take IEEE 802.11 as a concrete example. We show that the three fundamental operations of synchronization, routing and energy saving can be implemented in an integrated way. Our integrated solution is based on the periodic computation of a broadcast tree among the nodes reporting to the same access point, starting from the access point itself. We use the nodes that are tree vertices as relays for both data and control packets. We propose a distributed neighbor discovery protocol and a simple centralized algorithm for computing the broadcast tree. Our analysis and simulation results show that the proposed solution has low protocol overhead in terms of message passing and execution time, and performs well even if nodes are mobile.
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CSMA/CA多跳混合网络中的联合同步、路由和节能
多跳混合网络有助于为无线数据网络提供高带宽和广泛覆盖。我们关注基于CSMA/ ca的网络,并以IEEE 802.11为具体例子。我们证明了同步、路由和节能这三种基本操作是可以集成实现的。我们的集成解决方案是基于从接入点本身开始,在报告同一接入点的节点之间的广播树的周期性计算。我们使用作为树顶点的节点作为数据和控制数据包的中继。我们提出了一种分布式邻居发现协议和一种简单的集中式广播树计算算法。分析和仿真结果表明,该方案在消息传递和执行时间方面具有较低的协议开销,即使节点是移动的,也具有良好的性能。
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