Thesis (M.Sc.) - Cairo University - Faculty of Computers and Information - Department of Information Technology

Wireless Sensor Networks (WSNs) consist of a large number of low-price sensor nodes capable of sensing and transmitting information from an area of interest. These sensors are equipped with low-power transceivers and communicate each other in an ad hoc fashion forming a multi-hop transmission mechanism to deliver the data to the destination node (sink). WSNs have had great application in recent years such as traffic monitoring, health care and other surveillance systems. In the recent years the researchers developed QoS that supports routing protocols to reduce consumption energy and prolong lifetime of WSNs. QoS requirements in the routing protocols is one of the most important challenges. QoS routing deals with the end-to-end delay, bandwidth, packet loss, packet reception rate and surplus energy metrics, and tries to find the path with minimum resource consumption. Reducing the energy consumption is an important issue in the design of WSNs protocols. For the sake of developing the performance of WSNs, the critical issue is to solve a trade-off problem for QoS assurance and energy efficiency in routing design. One of the QoS routing protocols that studied the energy consumption is the energy aware geographic routing protocol (EAGRP); it is a location based routing protocol on WSNs. It tries to minimize the energy consumption that guarantees QoS. An energy efficient and QoS routing protocol; named fuzzy based energy-efficient and QoS routing protocol (FEQRP) over wireless sensor networks; is proposed to extend the life time of the network

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