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

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Presentation on theme: "Rajesh J. ValeDepartment of Computer Science 2009 IPTV Rajesh Vale."— Presentation transcript:

1 Rajesh J. ValeDepartment of Computer Science 2009 IPTV Rajesh Vale

2 Rajesh J. ValeDepartment of Computer Science 2009 Objective Use existing infrastructure/technology for – Access – Transport – Video encoding – Authentication – Billing To provide Television services (Live & VoD) to consumers.

3 Rajesh J. ValeDepartment of Computer Science 2009 Access Wireless feasible? xDSL – 512kbps, 768kbps etc is inadequate Solution? Fiber to home Fiber to neighborhood Mobility Vs Nomadicity – Mobility: Point of attachment changes in-session

4 Rajesh J. ValeDepartment of Computer Science 2009 Transport Efficient way of transporting in IP layer – Broadcast TV (bTV) – VoD – Live-Pause TV or Network PVR bTV natural candidate for Multicast VoD for Unicast Live-pause TV?

5 Rajesh J. ValeDepartment of Computer Science 2009 bTV: Multicast Issues What about lost packets? – Retransmission – FEC – Interpolation Is there such a thing as reliable multicast? Multicast tree administration?

6 Rajesh J. ValeDepartment of Computer Science 2009 Video Encoding Group of Pictures (GOP) – GoP 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

7 Rajesh J. ValeDepartment of Computer Science 2009 bTV: QoE Channel surfer experience – Load on network Immediate channel change – How to overcome wait for I-Frame? Smaller GoP encoding Start from previous I-Frame –Catchup? Create I-frame on request How network knows I-frame carrying IP packet?

8 Rajesh J. ValeDepartment of Computer Science 2009 VoD 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

9 Rajesh J. ValeDepartment of Computer Science 2009 Authentication Identity levels – Household – Individual – Avatar How to use existing AAA infrastructure? – Limitations 802.1X, SIM card, PKI certificate…

10 Rajesh J. ValeDepartment of Computer Science 2009 Billing Online billing – Non-IPTV services Offline billing – Traditional billing

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

12 Rajesh J. ValeDepartment of Computer Science 2009 MSTV Architecture http://www1.alcatel-lucent.com/com/en/appcontent/opgss/IPTV_sb_tcm228-693051635.pdf

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


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