朱明

个人信息Personal Information

性别:男

毕业院校:大连理工大学

学位:硕士

所在单位:软件学院、国际信息与软件学院

学科:计算机应用技术. 通信与信息系统

联系方式:0411-62274436

电子邮箱:zhuming@dlut.edu.cn

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Load migrating for the hot spots in wireless sensor networks using CTP

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论文类型:会议论文

发表时间:2011-12-16

收录刊物:EI、Scopus

页面范围:167-173

摘要:To suit the needs of data collection, routing protocols in WSN are normally required to form a collection tree where data flows from the source nodes to the sink nodes. These protocols, such as CTP and Multihop LQI, generally target at reducing the packet delivery cost without considering load balancing issues. We argue that load balancing is crucial for WSNs because load imbalance may cause certain nodes, which we call hot spots, to run out of energy faster than expected. The load imbalance may lead to holes and prominently degrade the performance of the network. In this paper, we propose BCTP (Balanced Collection Tree Protocol), which enhances CTP by enabling the network to migrate the load of the node under heavy traffic. BCTP uses the average transmission rate as the metric to measure a node's long term traffic load. Once a node is found heavily loaded, BCTP adopts a stochastic routing strategy to balance the load. BCTP is evaluated by test bed experiments with 9 Telosb motes. Experiment result shows that BCTP can reduce the load of the hot spot by up to 61.9\% in a densely deployed network. ? 2011 IEEE.