A recent post to Alcatel-Lucent blog by Roland Mestric [pictured], Video Solutions Marketing, Alcatel-Lucent. discusses the affect of streaming video traffic on public networks.
"When people watch Live TV on their television sets, it is broadcast or multicast TV, which means the same stream is distributed across the network to all the viewers at the same time. But when people watch video on IP connected devices (smartphones, tablets, PC, etc.) or when they watch on demand content (VoD, catch-up TV, network DVR, etc.), it is unicast traffic: each individual user is served with a unique stream".
" .. The Bell Labs study [see "Bell Labs Video Traffic Study" - here] says that in 2022, unicast-type video will represent more than 90% of the demand .. This is raising unique challenges for service providers who have to scale their networks to support unicast traffic .. Many operators say this phenomenon has started already and they are investing to ensure they can better serve their subscribers at the lowest cost".
"It’s pretty clear that Content Delivery Network (CDN) will play a critical role in helping operators optimize their networks for unicast traffic .. To retain the cost and traffic management benefits of the CDN, it means this personalization has to be performed in the CDN at the edge of the network".
See "Be prepared for the unicast flood!" - here.