【摘要】：針對無線傳感器網絡中如何利用有限能量延長網絡生存時間的問題,研究了分簇算法在能量異構傳感器網絡環(huán)境下的性能特點,設計出一種基于節(jié)點剩余能量,適用于多級能量異構網絡的分簇算法。在該算法的網絡簇頭選舉加權概率中引入了參量γ,使得在簇頭選舉過程中,具有較高的初始能量和剩余能量的節(jié)點在簇頭選舉過程中當選簇頭的機會增多。避免了剩余能量較小的節(jié)點擔任簇頭引起節(jié)點過早死亡使網絡覆蓋度降低的問題,從而均衡消耗網絡中的各節(jié)點能量,延長網絡的生存時間。同時,引入簇頭管理機制保證了網絡每輪簇頭數目的穩(wěn)定,進而提高了網絡的傳輸質量。實驗仿真結果表明,該算法在多級能量異構網絡下比LEACH、SEP和DEEC具有較長的網絡生存時間和穩(wěn)定的數據傳輸能力。
[Abstract]:In order to solve the problem of how to use limited energy to prolong the lifetime of wireless sensor networks, the performance characteristics of clustering algorithm in energy heterogeneous sensor networks are studied, and a new method based on node residual energy is designed. A clustering algorithm for multistage energy heterogeneous networks. The parameter gamma is introduced into the weighted probability of cluster head election in this algorithm, so that the nodes with high initial energy and residual energy are more likely to be elected in the process of cluster head election. The problem of premature death of nodes with small residual energy as cluster head and the reduction of network coverage is avoided, thus consuming the energy of each node in the network and prolonging the survival time of the network. At the same time, the cluster head management mechanism is introduced to ensure the stability of the number of cluster heads per wheel, and then the transmission quality of the network is improved. The experimental results show that the algorithm has longer network lifetime and stable data transmission ability than LEACH,SEP and DEEC in multistage energy heterogeneous networks.
【作者單位】： 遼寧石油化工大學信息與控制工程學院;
【基金】：遼寧省高等學校杰出青年學者成長計劃項目資助(LJQ2011032)
【分類號】：TN929.5;TP212.9

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相關期刊論文 前6條

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本文編號：2488358