基于反馈机制的异构传感器网络能量空洞避免策略研究

项目名称： 基于反馈机制的异构传感器网络能量空洞避免策略研究

项目编号： No.61303204

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 刘唐

作者单位： 四川师范大学

项目金额： 23万元

中文摘要： 由多种不同类型的传感器节点组成的异构传感器网络中，更易产生节点间的能耗不均衡，导致能量空洞现象的出现。本项目结合异构网络的特点，着重考察网络中各簇由于节点类型不一致造成的能量负载不均衡，对基于反馈机制的能量空洞有效避免策略进行深入研究，研究内容有:1、网络初始阶段，考虑异构节点类型和位置的未知性，提出簇半径与节点到sink距离相关的非均匀成簇算法；2、提出异构环境下节点能耗计算模型，通过各簇产生/转发的数据量与各簇到sink的距离，获得各簇的能耗值；3、在对各簇能耗之比进行分析的基础上，提出能动态调整各簇规模的sink反馈机制与反馈迭代结束条件，使网络在经过多轮反馈后各簇能耗趋于均衡，结束反馈迭代进入暂稳定成簇阶段。4、构建异构网络实验模型，验证并优化算法。通过本项目的探索与创新，为异构传感器网络的规划与广泛应用提供有力支持。

中文关键词： 无线传感器网络；异构；能量空洞；反馈机制；无线能量传输

英文摘要： In heterogeneous wireless sensor networks composed by a variety of different types of nodes, uneven energy consumption between nodes is more likely to result, leading to the emergence of energy hole. The project combines the characteristics of the heterogeneous network, focused on uneven energy consumption between clusters caused by inconsistency of nodes and conducts in-depth research on strategies to effectively avoid energy hole based on feedback mechanisms. The research includes: 1) to propose non-uniform clustering algorithm，under which cluster radius are related to the distance between nodes and sink in the initial phase of the network, considering that the type and location of the heterogeneous nodes are unknown; 2) to propose node energy consumption calculation model in the heterogeneous environment. Energy consumption of each cluster can be obtained according to the amount of data forwarded/generated by each cluster and the distance between each cluster to sink; 3) based on the analysis of the ratio of consumption of energy of each cluster, to propose sink feedback mechanism to dynamically adjust the size of each cluster and feedback iteration ending condition so that the energy consumption tends to be balanced and the ending feedback iteration can enter a temporary stable clustering period after sever

英文关键词： Wireless sensor networks；Heterogeneous ；Energy hole；Feedback mechanism；Wireless energy transfer