Prof. Dr. János Levendovszky
Budapest University of Technology and Economics, Hungary
Title: Quality-of-Service Routing Protocol for wireless sensor networks
Biography
Biography: Prof. Dr. János Levendovszky
Abstract
In this paper, we develop novel algorithms to find the optimal, energy preserving, paths from Source Node (SN) to the Base Station (BS) in Wireless Sensor Networks (WSNs). Optimality is defined in a constrained sense, in which the minimal energy route is sought (to maximize the lifespan of WSNs) under reliability constraint, meaning that each packet must reach the BS with a given probability. Energy efficiency is going to be achieved by selecting nodes for multi-hop packet forwarding under information, which yields the most evenly distributed energy state over the network after the packet has reached the BS. There are many efficient protocols which increase the lifetime of sensor network such as LEACH, PEGASIS, and PEDAP. But they failed to provide energy balancing under reliability constraints. Solving this problem, we propose a new algorithm under name High Quality of service Routing Algorithm (HQRA), which is able to find near-optimal paths in WSNs by minimizing the energy but guaranteeing a given level of reliability, as well. New High Quality of Service Routing Algorithm for WSNs, which finds the minimum energy path from the SN to the BS and achieves a predefined level of reliability. The proposed method can run in polynomial complexity with respect to the number of nodes, by recursively using the Bellman-Ford algorithm. Furthermore, HQRA gave good results with any BS positioning in wireless sensor network. The simulation results will demonstrate that our algorithm is more efficient than the other routing protocols proposed before.