Wireless Sensor Network, 2016, 8, 25-36 Published Online March 2016 in SciRes. http://www.scirp.org/journal/wsn http://dx.doi.org/10.4236/wsn.2016.83003 How to cite this paper: El Dien, M.E., Youssif, A.A.A. and Ghalwash, A.Z. (2016) Energy Efficient and QoS Aware Framework for Video Transmission over Wireless Sensor Networks. Wireless Sensor Network, 8, 25-36. http://dx.doi.org/10.4236/wsn.2016.83003 Energy Efficient and QoS Aware Framework for Video Transmission over Wireless Sensor Networks Mohammed Ezz El Dien * , Aliaa A. A. Youssif, Atef Zaki Ghalwash Department of Computer Science, Helwan University, Greater Cairo, Egypt Received 12 February 2016; accepted 29 February 2016; published 3 March 2016 Copyright © 2016 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract Wireless Multimedia Sensor Networks (WMSNs), is a network of sensors, which are limited in terms of memory, computing, bandwidth, and battery lifetime. Multimedia transmission over WSN re- quires certain QoS guarantees such as huge amount of bandwidth, strict delay and lower loss ratio that makes transmitting multimedia is a complicated task. However, adopting cross-layer approach in WMSNs improves quality of service of WSN under different environmental conditions. In this work, an energy efficient and QoS aware framework for transmitting multimedia content over WSN (EQWSN) is presented, where packet, queue and path scheduling were introduced. It adapts the application layer parameter of video encoder to current wireless channel state, and drops less important packets in case of network congestion according to packet type. Finally, the path sche- duling differentiates packets types/priority and route them through different paths with different QoS considering network lifetime. Simulation results show that the new scheme EQWSN transmits video quality with QoS guarantees in addition to prolonging network lifetime. Keywords Wireless Multimedia Sensor Networks, Cross Layer Design, GOP Structure Analysis, Packet Scheduling, Queue Scheduling, Path Scheduling 1. Introduction WMSN is an ad-hoc arrangement of wirelessly interconnected multifunctional sensor nodes, which allows re- * Corresponding author.