This blog is by Gerald Reddig from Nokia Siemens Networks.
Smart Labs conducted a recent study to evaluate the behavior of the popular video streaming service Netflix and video call service Skype over a QoS (Quality of Service) enabled LTE Network.
Bottom line: QoS differentiation can dramatically improve the viewer experience.
Skype and Netflix users with high priority status actually experience double the throughput compared to users with no or low priority status. During periods of heavy data traffic congestion, video quality degraded gradually and then stalled for over 2 minutes for the low priority user. In contrast, the high priority user experience was characterized by significantly better video quality. The Smart Lab study observed that users in Quality of Service differentiation enabled LTE networks experienced fewer retransmissions and less packet loss compared to video service users with no specified priority level. QoS differentiation allows dynamic and real-time prioritization of subscribers and/or applications depending on network load. Operators can thus differentiate specified user groups or applications in order to build preferential customized packages and develop new revenue streams.
Video and audio entertainment is the largest traffic volume category on virtually every network that Smart Labs examined. The world’s two largest online video services – Netflix and YouTube – accounted for half of all Internet traffic to date in North America in the year, according to the US firm, Sandvine. The report, based on data from Sandvine’s global customer base, predicts that 2013 will be the year that long-form video moves onto mobile networks in many markets, as users become more comfortable with watching films and TV shows on their handheld devices.
In most regions, Skype is the largest single source of OTT communication traffic in both fixed and mobile access technologies, making it the leading source of internet video conferencing traffic in the entire world.