QoS Routing Method Considering Congestion in WMSNs
Si-Yeong Bae, Sung-Keun Lee, Jin-Gwang Koh, Kyoung-Wook Park · International Journal of Multimedia and Ubiquitous Engineering · 2014
In Wireless multimedia sensor networks (WMSNs), new metrics are required in order to accurately measure and evaluate link quality of nodes residing along a routing path comprehensively considering end-to-end delay, throughput and radio interference.Moreover, it is important to develop a routing algorithm that can find an optimal path to meet a QoS requirement based on the metrics.This study presents a QoS routing method taking into account congestion, which is aimed at minimizing end-to-end delay and increasing throughput.With a use of congestion control technique and least cost-based routing mechanism, the proposed routing method increases packet transmission rate whereas it reduces packet loss and delay.Ultimately, it contributes to longer network lifetime of sensor networks, which could result to offering better reliability of the network.