Video Streaming With PCA and Hard Vs Soft DRP
Video streaming over wireless links is a challenging issue due to the stringent quality-of-service requirement of video traffic and the contention nature of wireless media with limited channel resources. Various wireless Media Access Control (MAC) protocols have been proposed, and most of them follow either the contention-based or contention-free approach. In this paper, the authors propose to stream video traffic over both contention-based and contention-free MAC protocols, exampled by WiMedia UWB Prioritized Contention Access (PCA) and Distributed Reservation Protocol (DRP), and then evaluate the performance of such an approach with extensive simulation. The novelty of their approach is to use both PCA and DRP for every single video stream by reserving well below the peak data rate and handling traffic burst through reduced contention.