M.Sc. Thesis Defense

This thesis presents scientific contributions in the field of Wireless Sensor Networks (WSN) and is presented in Arabic language, in Mansoura UNiversity, Faculty of Engineering. Prof. El Saied Ashour Hall on the 8th of July, 2017

This work categorizes the applications of WSN based on different aspects to show the major protocol design issues. Thus, the energy efficiency of the recent proactive routing protocols is studied from different angles.

Accordingly, two distributed, energy-efficient, and connectivity-aware routing protocols for solving the routing hole problem were introduced. These protocols are On-Hole Children Reconnection (OHCR) with local nature and On-Hole Alert (OHA) with global nature. they solve the problem of premature end of network lifetime in applications where the base station (BS) is far from the Region Of Interest (ROI).

The proposed protocols preserve the connectivity of all single setup phase, single path networks with any topology in an energy efficient manner by avoiding topology reformation overhead. Simulation results proved that the proposed protocols outperform the recent ones in terms of network lifetime, node loss rate, and network overhead. Such that, the two protocols are examined on both Degree Constrained Tree (DCT) and Shortest Path Tree (SPT) to provide about 50% to 75% increase in network lifetime over the recent energy efficient routing protocols; like UCCGRA and NEECP. On the other hand, applying our protocols on additional antenna enabled nodes to lead to further increase in network lifetime.