| 摘要: |
| 针对在三维空间中，对于中继节点（RN）的位置受限并且是双层拓扑的情况，提出了一种基于混合整数线性规划的中继节点放置算法，该算法首先考虑三维空间中继节点放置的物理层模型，然后基于混合整数线性规划（MIPS）给出最优能效的分簇，使得每个传感器节点与相应簇头之间的传输距离最小.仿真结果表明：与只考虑最小化簇内距离的中继节点放置算法相比，本算法在降低重传率和延长网络生命周期方面都有较大的改善. |
| 关键词: 中继节点 无线传感器网络 双层受限 整数线性规划 |
| DOI：10.3969/J.ISSN.1000-5137.2018.02.014 |
| 分类号:TN929.5 |
| 基金项目:上海市自然科学基金项目（16ZR1424500） |
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| Research on the placement algorithm of two-tiered constrained relay nodes in wireless sensor networks |
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Xiang Haokai, Zhou Xiaoping, Wang Jianan, Li Li, Huang Jiahui
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The College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| In three-dimensional space,when the location of relay nodes is limited and it is a two-layer topology,a relay location algorithm based on mixed integer linear programming (MILP) is proposed.The algorithm first considers the physical layer model placed by relay nodes in three-dimensional space.Then,the optimal energy efficient clustering is given based on mixed integer linear programming.So that the transmission distance between each sensor node and its corresponding cluster head is the minimized.The simulation results show that compared with the traditional relay node algorithm that only considers the minimum intra cluster distance,the algorithm has a great improvement in reducing the retransmission rate and prolonging the life cycle of the network. |
| Key words: relay node wireless sensor networks two-tiered constrained mixed integer linear programming |
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