| 分簇无线传感器网络中提高网络连通性的协作算法 |
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| 引用本文： | 李文峰,邵震洪,沈连丰.分簇无线传感器网络中提高网络连通性的协作算法[J].东南大学学报,2011,27(1):1-7. |
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| 作者姓名： | 李文峰 邵震洪 沈连丰 |
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| 作者单位： | 东南大学移动通信国家重点实验室,南京,210096 |
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| 基金项目： | The National Natural Science Foundation of China，the Important National Science and Technology Specific Projects，the Research Fund of the National Mobile Communications Research Laboratory of Southeast University |
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| 摘 要： | 针对分簇无线传感器网络提出了一种基于虚拟天线阵列的协作算法.该算法通过节点间的协作来提高网络连通性,所有节点均按照泊松Voronoj网格模型进行分簇,簇首根据通信链路决定是否激活节点协作;若节点协作算法被激活,簇首从其成员中选择适合的节点作为协作节点共同组成虚拟天线阵列.通过协作,可扩展簇间的通信范围从而与远方节点直接...
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| 关 键 词： | 传感器网络 覆盖 协作通信 工作时间 |
Cooperative algorithm for improving network connectivity in clustered wireless sensor networks |
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| Li Wenfeng,Shao Zhenhong,Shen Lianfeng.Cooperative algorithm for improving network connectivity in clustered wireless sensor networks[J].Journal of Southeast University(English Edition),2011,27(1):1-7. |
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| Authors: | Li Wenfeng Shao Zhenhong Shen Lianfeng |
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| Institution: | (National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China) |
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| Abstract: | In order to improve network connectivity in clustered wireless sensor networks,a node cooperative algorithm based on virtual antenna arrays is proposed.All the nodes in the network are assumed to be clustered via Poisson Voronoi tessellation(PVT).The activation of the node cooperative algorithm is determined by the cluster heads(CHs) according to communication links.When the cooperative algorithm is activated,the CH selects cooperative nodes(CNs) from its members to form a virtual antenna array.With the cooperation,nodes can extend the inter-cluster communication range to directly contact with further nodes after a coverage hole is detected,or compensate for channel gains while inter-cluster transmission fails due to deep channel fading.Simulation results show that the proposed algorithm achieves better network connectivity and energy efficiency.It can reduce outage probability,sustain network connectivity and maintain operations as long as possible,which prolongs network operation time. |
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| Keywords: | wireless sensor network coverage cooperative communication operation time |
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