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Track Topology Based Reliable In-Network Aggregation Scheduling in Wireless Sensor Networks
Jang Woon BAEK Kee-Koo KWON Su-In LEE Dae-Wha SEO
IEICE TRANSACTIONS on Communications
Publication Date: 2014/11/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
track topology, reliable, data aggregation, wireless sensor networks,
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This paper proposes a reliable data aggregation scheduling that uses caching and re-transmission based on track topology. In the proposed scheme, a node detects packet losses by overhearing messages that includes error indications of the child nodes, from its neighbor nodes. If packet losses are detected, as a backup parent, the node retransmits the lost packet. A retransmission strategy is added into the adaptive timeout scheduling scheme, which adaptively configures both the timeout and the collection period according to the potential level of an event occurrence. The retransmission steps cause an additional delay and power consumption of the sensor nodes, but dramatically increase the data accuracy of the aggregation results. An extensive simulation under various workloads shows that the proposed scheme outperforms other schemes in terms of data accuracy and energy consumption.