Cross-Layer Based Adaptive Video Transport Over Low Bit-Rate Multihop WSNs

مقال فى مجلة
Rikli, Nasser-Eddine . 2014
نوع عمل المنشور
Master
رابط النشر على الانترنت
وسوم
video, wireless, sensor, networks, cross-layer
مجلة/صحيفة
Journal
رقم الانشاء
4
رقم المجلد
37
الصفحات
182 to 191
ملخص المنشورات

A low bit-rate ZigBee-based sensor network carrying scalable video streams will be considered. A cross-layer priority algorithm that combines the state of the channel and the quality of the video traffic will be suggested to optimize the required quality of service of the video streams. The proposed algorithm prioritizes the transport of the basic frames, and thus minimizes the carried enhancement orphan frames. It also avoids transmitting the enhancement frames related to a dropped basic frame. A noticeable improvement in the end-to-end delay of the video stream was achieved, an increase in the carried base frames, and a decrease in the orphan frames provided both an enhanced quality of the received video stream and an improvement in the channel utilization.