By Benny Bing
Contemporary years have visible an exponential bring up in video and multimedia site visitors transported over the net and broadband entry networks. This well timed source addresses the foremost problem dealing with many provider services at the present time: potent bandwidth administration for helping top quality video supply. Written via a famous professional within the box, this useful e-book describes how you can optimize video transmission over rising broadband networks. additionally, the e-book explores new instant entry networks that could allow video connectivity either in and out the residential premise.
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Additional resources for 3D and HD Broadband Video Networking
2: Video-on-demand (VoD) architecture. In the past, cable plants transmit all channels in a given tier to all STBs that reside at the customer’s premise. Cable pipes can be 750 MHz, 860 MHz or 1 GHz but the typical available capacity is between 500 to 750 MHz, enough to simultaneously carry 83 to 125 broadcast channels. Each 6-MHz channel can carry data, up to four multicast streams, a 720p/1080i HD stream, or a combination of these services. 3). The narrowcast approach broadcast popular channels continuously whereas less popular channels are dynamically activated as subscribers view them.
Thus, a very small probability of packet loss will be sufficient to prevent standard TCP from utilizing the available bandwidth efficiently. To operate in broadband networks, TCP needs to be modified from its original low-speed network design and to more aggressive congestion control algorithms. Some of these methods are described below. Besides the simple solution of using multiple TCP connections in parallel, better broadband transport protocols can be designed by either modifying the standard TCP protocol or redesigning new congestion control schemes based on 31 The Access and Home Networks UDP.
These solutions are implemented at the application layer above UDP and therefore avoid modifications to operating system kernels and routers. Based on the assumption that packet losses are indications of network congestion, the AIMD congestion control of standard TCP reaches the steady state, which reflects the protocol’s efficiency in terms of throughput and link utilization. Any packet loss is considered to be the result of congestion and the congestion window size is reduced dramatically as a precaution to avoid congestion.
3D and HD Broadband Video Networking by Benny Bing