CRBcast: a reliable and energy-efficient broadcast scheme for wireless sensor networks using rateless codes
CRBcast: a reliable and energy-efficient broadcast scheme for wireless sensor networks using rateless codes
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DOI：
10.1109/t-wc.2008.071218
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发表时间：
2008-12
影响因子：
10.4
通讯作者：
Nazanin Rahnavard;Badri N. Vellambi;F. Fekri
中科院分区：
文献类型：
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作者：
Nazanin Rahnavard;Badri N. Vellambi;F. Fekri
本文介绍了一种新的两阶段广播方案称为协作无速率广播（CRBcast）。CRBcast是一种可扩展的方法，用于在多跳无线传感器网络中进行可靠且节能的广播，该方法还解决了负载平衡问题，同时不需要网络拓扑知识。CRBcast将概率广播（PBcast）提供的能效与应用层无速率编码提供的可靠性特征相结合。在CRBcast的第一阶段中，使用无比率码编码的分组基于PBcast被分散到网络中。在第二阶段，邻近节点的简单协作可确保所有节点以非常高的成功概率恢复原始数据。由于CRBcast的性能在很大程度上取决于PBcast，本文的第一部分分析了分析和通过模拟的概率广播方案。然后，我们研究CRBcast的有效性。我们表明，CRBcast同时提供可靠性和能源效率。仿真结果表明，CRBcast提供了至少72%和60%的节能相比，洪水和PBcast，分别。
This paper introduces a novel two-phase broadcast scheme referred to as collaborative rateless broadcast (CRBcast). CRBcast is a scalable approach for reliable and energy-efficient broadcasting in a multihop wireless sensor networks that also addresses load balancing, while requiring no knowledge of network topology. CRBcast combines the energy-efficiency offered by probabilistic broadcasting (PBcast) with the reliability features offered by application-layer rateless coding. In the first phase of CRBcast, packets encoded using a rateless code are dispersed into the network based on PBcast. In the second phase, simple collaboration of neighboring nodes ensures that all nodes recover original data with a very high probability of success. Since the performance of CRBcast rests heavily on that of PBcast, first part of this paper analyzes both analytically and via simulations the probabilistic broadcasting scheme. We then study the effectiveness of CRBcast. We show that CRBcast provides both reliability and energy efficiency simultaneously. Simulation results indicate that CRBcast provides an energy savings of at least 72% and 60% in comparison with flooding and PBcast, respectively.