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Sensor network queue management algorithm based on duty cycle control and delay guarantee
ZENG Zhendong, CHEN Xiao, SUN bo, WU Shuxin
Journal of Computer Applications    2015, 35 (5): 1242-1245.   DOI: 10.11772/j.issn.1001-9081.2015.05.1242
Abstract392)      PDF (775KB)(522)       Save

In order to ensure that the Wireless Sensor Network (WSN) delay requirements while minimizing power consumption, a sensor network queue management algorithm based on duty cycle control and delay guarantees (DQC) was proposed. According to changing network conditions, in order to better control node duty cycle and queue thresholds, a two-way controller was used. The controller provided a delay notification mechanism to determine an appropriate sleep time and queue length for each node based on application requirement and time-varying delay requirement. And the stability of the state of two-way controller was derived based on control theory to obtain a condition of the control parameters for guaranteeing asymptotically stable steady state. Simulation results show that compared with the algorithm based on adaptive duty cycle control and performance improvement queue-based congestion management mechanism, the proposed algorithm shortened end-to-end delay of time period by 38.8% and 36.0%, reduces the average power consumption by 46.5 mW and 27.5 mW. It show better performances on the control of delay time and energy efficiency.

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