An Enhanced Qos Based Dynamic Routing Protocol for Wireless Sensor Networks
نویسندگان
چکیده
In recent times, Wireless Sensor Networks (WSNs) is extensively used in numerous applications with enormously varying requirements and uniqueness. Due to the dynamically changing topology, improving Quality of Services (QOS) in WSNs has becomes hard. WSN have several different constraints in route selection such as energy, availability, computational power, buffer space, throughput etc. In order to achieve improve throughput, many dynamic and reliable source routing protocols are introduced. However WSN suffers from a critical problem known as congestion, which causes packet loss, lower throughput, collisions and delay. Finally all these issues results in poor network performance due to its ineffective routing. This work aims to improve the network performance under varying network conditions. Ultimate goal is congestion avoidance and QOS based dynamic routing is proposed an enhanced QOS based Dynamic routing protocols (Q-DRP) for WSNs .The work extends the regional congestion avoidance approach in the network with dynamic delay calculation. Using Q-DRP every nodes weight will be calculated based on the parameters buffer Size, total delay (transmission delay, queue delay, propagation delay), hop count, and channel busy ratio, mobility along with other overhead. A QDRP utilizes the flowing mechanisms for finding the optimal link, a QOSguaranteed relay selection mechanisms to meet the transmission delay and propagation delay requirements, to improve the performance against congestion distributed optimal packet scheduling algorithm (OPS) have been proposed to further reduce transmission delay, propagation delay and queuing delay. Delay computation helps to know the overall cost of the link. Three parameter delays are calculated to analyze optimal link (path) selections for better transmission.
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