Load Balance and Energy Efficient Data Gathering in Wireless Sensor Networks

D. Mandala, Xiaojiang Du, Fei Dai, Chao You
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引用次数: 62

Abstract

Many data gathering protocols for wireless sensor networks use clustering technology for prolonging the network lifetime. Cluster-based protocols reduce the total energy consumption via data aggregation, and balance energy consumption via clusterhead rotation. However, most existing protocols focus on load balance within each cluster. The energy consumption of the entire network is still unbalanced, and this uneven energy dissipation can significantly reduce the network lifetime. We propose an even energy dissipation protocol (EEDP) for efficient cluster-based data gathering in wireless sensor networks. In EEDP, the sensor data are forwarded to the base station via multiple chains of clusterheads. Each chain uses a rotation scheme to balance energy consumption among clusterheads and avoid the formation of a hot spot. We developed efficient algorithms to organize clusterheads into multiple chains, such that the traffic load is evenly distributed among different chains. Analysis and simulation results show that EEDP achieves better load balance than several existing protocols and significantly increases network lifetime
无线传感器网络中的负载平衡和节能数据采集
许多无线传感器网络的数据采集协议都采用了聚类技术来延长网络生命周期。基于簇的协议通过数据聚合降低总能耗,并通过簇头旋转平衡能耗。然而,大多数现有协议关注的是每个集群内的负载平衡。整个网络的能量消耗仍然是不平衡的,这种不平衡的能量消耗会显著降低网络的寿命。提出了一种均匀能量耗散协议(EEDP),用于无线传感器网络中基于集群的高效数据采集。在EEDP中,传感器数据通过多个簇头链转发到基站。每个链使用一个旋转方案来平衡簇头之间的能量消耗,避免形成热点。我们开发了有效的算法将簇头组织成多个链,从而使流量负载在不同链上均匀分布。分析和仿真结果表明,与现有的几种协议相比,EEDP具有更好的负载均衡性能,并显著提高了网络的生存期
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