An improvised scheme for cross-layer optimization to support QoS in MANET

摘要

Recently demand of mu Itimedia application is growing rapidly in real time application such as video streaming. Multimedia applications demand for high quality of service for end user experience. In this field of multimedia communication Mobile-Ad-Hoc network has proven its significance to provide better Quality Of Service (QoS). MANETs consist of mobile nodes which are self-configurable and self-organizing without using any predefined network topology and infrastructure. MANETs suffer from the issue of QoS due to its mobile nature of mobile nodes which causes rapid link failure, channel contention, route maintenance etc. which causes performance degradation of network in terms of throughput, PSNR, delay etc. To address this issue, various researches have been proposed but still Quality of service for more number of users remains a challenging task for researchers, in this work, we propose a novel approach for QoS provision in mobile ad-hoc networks and improving the performance of network. Propose approach utilizes channel modeling, buffer modeling and video distortion & reconstruction modeling. Channel modeling helps to achieve path loss and path gain during video data transmission, buffer modeling utilizes threshold for packet transmission probability and video distortion model is used to achieve packet loss and reconstruction of video packet at receiver end. Proposed approach is compared with existing approach; experimental study shows that proposed model outperforms to improve the overall performance of network.