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نویسندگان
چکیده
Throughput is the key parameter to estimate quality of service of wireless sensor networks (WSN). Many research papers were published on improving energy efficiency, but throughput improvement has not been extensively investigated. In this paper, the authors propose a Variable rate and Adaptive Traffic Tuning Algorithm to improve throughput. The traffic in event driven WSN is bursty in nature and causes congestion at the coordinator. This leads to packet loss and throughput degradation. The proposed algorithm work at coordinator and the sensor nodes as well. It converts bursty traffic arriving at the coordinator into constant bit rate traffic, to reduce packet loss. The transmission rate is adjusted at the sensor nodes, which reduces congestion and improves channel utilisation. The algorithm is implemented in NS-2. The performance was compared with existing algorithms. A 70% higher throughput was achieved with proposed algorithm.
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