IPTV Rajesh Vale Rajesh J Vale Department of

IPTV Rajesh Vale Rajesh J. Vale Department of Computer Science 2009

Objective Use existing infrastructure/technology for – Access – Transport – Video encoding – Authentication – Billing To provide Television services (Live & Vo. D) to consumers. g Rajesh J. Vale Department of Computer Science 2009

Access g g g Wireless feasible? x. DSL – 512 kbps, 768 kbps etc is inadequate Solution? • Fiber to home • Fiber to neighborhood g Mobility Vs Nomadicity – Mobility: Point of attachment changes in-session Rajesh J. Vale Department of Computer Science 2009

Transport g g Efficient way of transporting in IP layer – Broadcast TV (b. TV) – Vo. D – Live-Pause TV or Network PVR b. TV natural candidate for Multicast Vo. D for Unicast Live-pause TV? Rajesh J. Vale Department of Computer Science 2009

b. TV: Multicast Issues g g g What about lost packets? – Retransmission – FEC – Interpolation Is there such a thing as ‘reliable multicast’? Multicast tree administration? Rajesh J. Vale Department of Computer Science 2009

Video Encoding g Group of Pictures (GOP) – Go. P size varies over time – Average with variance bounds exists I/P/B frames – Transmission sequence : IBBPBBPBBPBB CBR Vs VBR – CBR is preferred for predictability and efficient network engineering Rajesh J. Vale Department of Computer Science 2009

b. TV: Qo. E g g Channel surfer experience – Load on network Immediate channel change – How to overcome wait for I-Frame? • Smaller Go. P encoding • Start from previous I-Frame – Catchup? • Create I-frame on request g How network knows I-frame carrying IP packet? Rajesh J. Vale Department of Computer Science 2009

Vo. D g g g Buy now, watch anytime in next 30 days Trick mode operations – Pause/FF/Rew Content theft prevention – DRM system on top of every content flow Rajesh J. Vale Department of Computer Science 2009

Authentication g g g Identity levels – Household – Individual – Avatar How to use existing AAA infrastructure? – Limitations 802. 1 X, SIM card, PKI certificate… Rajesh J. Vale Department of Computer Science 2009

Billing g g Online billing – Non-IPTV services Offline billing – Traditional billing Rajesh J. Vale Department of Computer Science 2009

Future IS/IT IP address is associated with viewer. Leverage it for unique services g Websurfing/shopping g Targeted Advertisements g Interactive TV g Blended services WEBSERVICES – Caller ID on TV – E-mail alerts Rajesh J. Vale Department of Computer Science 2009

MSTV Architecture Rajesh J. Vale Department of Computer Science 2009 http: //www 1. alcatel-lucent. com/en/appcontent/opgss/IPTV_sb_tcm 228 -693051635. pdf

Cisco IPTV Architecture http: //www. cisco. com/global/DK/docs/presentations/partnere/IPTV-Copenhagen-291105. pdf Rajesh J. Vale Department of Computer Science 2009