標題: Optimal Number of Clusters in Dense Wireless Sensor Networks: A Cross-Layer Approach
作者: Wang, Li-Chun
Wang, Chung-Wei
Liu, Chuan-Ming
電信工程研究所
Institute of Communications Engineering
關鍵字: Cross-layer design;optimal number of clusters;wireless sensor networks
公開日期: 1-二月-2009
摘要: Cluster-based sensor networks have the advantages of reducing energy consumption and link-maintenance cost. One fundamental issue in cluster-based sensor networks is determining the optimal number of clusters. In this paper, we suggest a physical (PRY)/medium access control (MAC)/network (NET) cross-layer analytical approach for determining the optimal number of clusters, with the objective of minimizing energy consumption in a high-density sensor network. Our cross-layer design can incorporate many effects, including lognormal shadowing and a two-slope path loss model in the PRY layer, various MAC scheduling, and multihop routing schemes. Compared with the base-line case with one cluster per observation area (OA), a sensor network with the proposed optimal number of clusters can reduce the energy consumption by more than 80% in some cases. We also verify by simulations that the analytical optimal cluster number can still effectively function, regardless of the different densities of sensors in various OAs.
URI: http://dx.doi.org/10.1109/TVT.2008.928637
http://hdl.handle.net/11536/12867
ISSN: 0018-9545
DOI: 10.1109/TVT.2008.928637
期刊: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume: 58
Issue: 2
起始頁: 966
結束頁: 976
顯示於類別:會議論文


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