Experimental assessment of the effects of cross-traffic on Wi-Fi video streaming

Abstract

Wi-Fi networks are the first and sometimes only choice for the video streaming in homes, airports, malls, public areas and museums. However, Wi-Fi networks are vulnerable to interference, noise and have bandwidth limitations. Due to the intrinsic vulnerability of the communication channel, and the large number of variables involved, simulation alone is not enough in the evaluation of the performance of wireless networks.\ud Actually, there is a tendency to give experimental tests a central role in the assessment of Wi-Fi networks performance.\ud The paper presents an experimental analysis of the effects of cross traffic on the performance of video streaming over Wi-Fi, based on cross-layer measurements. Experiments are carried out in a semi-anechoic chamber, to prevent the results from being influenced by external factors. The experimental results permit to analyze the influence of cross traffic characteristics on cross layer measures and objective video quality metrics evaluated through a standardized approach

Quality assessment of VoIP services: A proposal based on the measurement of the IP Packet Delay Variation

“…Indeed, in IP networks, two terminals are not linked through a physical circuit like in a public switched telecommunication network (PSTN). Delay, latency, compromised data throughput and unacceptable round trip times, commonly experienced on IP networks, may lead to voice and video quality degradation [7]- [12]. As a consequence, to warrant the expected quality of services to the users, suitable management and monitoring policies have to be adopted [1].…”