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首页> 外文会议>International Symposium on Parallel and Distributed Processing and Applications(ISPA 2005); 20051102-05; Nanjing(CN) >A Clustering Mechanism with Various Cluster Sizes for the Sensor Network
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A Clustering Mechanism with Various Cluster Sizes for the Sensor Network

机译：传感器网络中具有各种群集大小的群集机制

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摘要

One of the most important issues on the sensor network with resource-limited sensor nodes is prolonging the network lifetime by effectively utilizing the limited node energy. The most representative mechanism to achieve a long-lived sensor network is the clustering mechanism which can be further classified into the single-hop mode and the multi-hop mode. In the single-hop mode, all sensor nodes in a cluster communicate directly with the cluster head (CH) via single hop, so the contention-less MAC protocol is preferred. In the multi-hop mode, sensor nodes communicate with the CH with the help of other intermediate nodes and the contention-less MAC protocol is not required. One of the most critical factors that impact on the performance of the existing multi-hop clustering mechanism (in which the cluster size is fixed to some value, so we call this the fixed-size mechanism) is the cluster size and, without the assumption on the uniform node distribution, finding out the best cluster size is intractable. Since sensor nodes in a real sensor network are distributed non-uniformly, the fixed-size mechanism may not work best for real sensor networks. Therefore, in this paper, we propose a new dynamic-size multi-hop clustering mechanism in which the cluster size is adjusted according to the information on the load and the residual energy of a CH and that of other nodes near to the CH. We show that our proposed scheme outperforms other clustering mechanisms by carrying out simulations.
机译：具有资源受限的传感器节点的传感器网络上最重要的问题之一是通过有效利用有限的节点能量来延长网络寿命。实现传感器网络寿命长的最有代表性的机制是聚类机制，可以将其进一步分为单跳模式和多跳模式。在单跳模式下，群集中的所有传感器节点都通过单跳直接与群集头（CH）通信，因此首选无竞争MAC协议。在多跳模式下，传感器节点借助其他中间节点与CH通信，并且不需要无争用MAC协议。影响现有多跳群集机制（群集大小固定为某个值，因此我们将其称为固定大小机制）的性能的最关键因素之一就是群集大小，并且无需假设在均匀节点分布上，找出最佳群集大小是很困难的。由于真实传感器网络中的传感器节点分布不均匀，因此固定大小的机制可能不适用于真实传感器网络。因此，在本文中，我们提出了一种新的动态大小多跳聚类机制，其中，根据关于CH以及CH附近的其他节点的负载和剩余能量的信息来调整集群大小。我们表明，通过进行仿真，我们提出的方案优于其他聚类机制。

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