By Benny Bing
Contemporary years have visible an exponential elevate in video and multimedia site visitors transported over the web and broadband entry networks. This well timed source addresses the most important problem dealing with many carrier prone this present day: powerful bandwidth administration for assisting top quality video supply. Written by means of a famous professional within the box, this sensible publication describes how one can optimize video transmission over rising broadband networks. additionally, the e-book explores new instant entry networks which could allow video connectivity either inside and out the residential premise.
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Extra resources for 3D and HD Broadband Video Networking
A key advantage of the VBR approach is the economies of scale with regards to bandwidth utilization when multiple VBR streams are stacked together. 88 Mbps 256-QAM channel can accommodate 10 SD streams. However, more VBR SD streams can be accommodated over the same 256-QAM channel, improving the bandwidth efficiency by more than 40%. The improvement is possible with the use of bonded channels. Although some SDV vendors advocate the use of VBR even in an SDV deployment, some operators have shied away from this approach due to: • • • An increase in the required network computing resources of routers, switches, edge QAMs, and other components; A reduction in the relative throughput of these devices while increasing the chances of queuing overflows or underflows; An increase in the network communication overhead for both the data plane (video delivery) and control plane (control and signaling).
The Gigabit-Ethernet architecture supports oversubscription by sharing the Ethernet payload over more QAMs, provided not all QAMs will exceed their peak usage rate simultaneously. Ethernet switching enables any unicast or multicast stream from the headend (which may be encrypted) to be directed to any remote QAM, and thus enable a more efficient utilization of the capacity. Multiple service operators (MSOs) can now start a deployment with a low number of streams but have the flexibility to direct any stream to any serving area in the network.
Thus, the success of IP video may be more dependent on enabling the consumer with in-home network capabilities to access service content. 2 IPTV over DSL Internet Protocol Television (IPTV) is a method of distributing TV content over a private (managed) IP network and is a term largely used to refer to a telco TV service. , YouTube, Hulu) that distributes TV content over the public Internet (an unmanaged network). IPTV content distribution can be multicast (supporting live TV) or unicast (supporting interactive services, targeted advertisements, and VoD).