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IPTV Technology, Trends and Challenges

IPTV Technology, Trends and Challenges 20
IPTV Technology, Trends and Challenges EE233 Class Presentation William D. Hong Bala Pesalaƒƒƒ Outline The “WWW” of IPTV What is IPTV Why IPTV When IPTV What is IPTV IPTV: Internet Protocol Television Television through Internet TV Internet ContentWhy IPTV The “AAA” of what consumers want Content Any where Any time Any deviceWhy IPTV Digitizing the info enables the AAA’s easily Source Sanford Bernstein Co.ƒƒƒƒƒƒƒƒ Why IPTV Imagine a World Video on Demand with hundreds of Channels Interactive program guide PictureinPicture Search Functionality Event Notification Integrated Caller I.D. Integration w/ Data Multiple Angle/PicturesSBC/ATT IPTV Demonstration of Key FeaturesWorldwide Broadband Households by Region 140 Africa Middle East 120 Australia/New Zealand Eastern Europe Latin America 100 Asia 10 million house holds/year Western Europe in U.S alone 80 North America 60 40 20 0 2000 2001 2002 2003 2004 2005 Millions of HHsIPTV Marketƒƒƒƒƒƒ Recent IPTV Roll outs ATT Offering IPTV to consumers in the San Antonio, Texas market. 200 channels, including ESPN, HBO, Disney, MTV, and CNN, along with videoondemand titles and settop boxes with DVR capabilities. ATT also plans to allow customers with videoenabled cell phones to watch programs stored at home through a digital video recorder. In addition ATT began offering fiberbased, highspeed Internet, but the fiber is not extended to homes,. VERIZON Began offering its fiberbased FiOS TV service in seven communities in North Texas Verizon expects to have 400,000 subscribers in the North Texas area more than one million potential viewers. IPTV: TECHNOLOGYWhat is IPTV • What is IPTV –Uses broadband internet for delivery of television programming. • How is it different – Digitally switched architecture, NOT channel based. – No tuning. Set top box (STB) decodes IP video. Content delivered as needed. – Interactive, personalized, robust. •VOD vs IPTV IPTV is a type of VOD serviceCATV Architecture (e.g. PON RF overlay ) • 54870 MHz spectrum with 6 MHz bandwidth (134 potential carriers) – Lower 65: analog – Upper 65: digital • Entire bandwidth delivered to homes Van Veen, et al. Bell Labs Technical Journal, 10 (1), 181200 (2005)IPTV Architecture • Signals encoded and multicast via IP packets • Digital encoding and decoding required • Eliminate CATV lasers and EDFAs • Efficient bandwidth use Van Veen, et al. Bell Labs Technical Journal, 10 (1), 181200 (2005)Bandwidth Vs Lengthƒƒƒ IPTV Broadcast Technologies • Ethernet vs ATM (Asynchronous Transfer mode) Ethernet is dominant LAN technology while ATM is used in Internet Backbones ATM is a solution that fits all: WAN/MAN/LAN and offers higher QOS (Quality of Service) ATM is a complex technology that needs higher installation times and is also more costlyTechnological Overview Supportsoft, “IPTV The Clear Picture” • National Headend – Pulls content from satellite and encodes video stream to compressed IP packets – Telco ownership of entire system ensures QoS – Multicast to local offices • Forward Error Correction to ensure delivery of packetsTechnological Overview Supportsoft, “IPTV The Clear Picture” • Local Office – Mixes in local tv stations, advertising, VOD – Middleware handles • User authentication • Channel change requests • Billing • VOD requests –UnicastVOD via Real Time Streaming Protocol (RTSP)Technological Overview Supportsoft, “IPTV The Clear Picture” • Local Office (continued…) Bandwidth issues – Currently, ATT offers 1.56Mbps high speed internet via DSL – Newest ADSL+ max bandwidth 25Mbps –Delivery of multiple streams (for PIP, multiple program recording, multi TV households) required – Standard definition TV • 11.5 Mbps in Windows Media encoding • 3.5 Mbps in MPEG2 – High definition TV • 78 Mbps in Windows Media encoding • 1820 Mbps in MPEG2 – MAJOR upgrades to infrastructure are required and underway (e.g. FTTH)Technological Overview Supportsoft, “IPTV The Clear Picture” • End User – Set Top Box (STB) – Reassembles IP packets, decodes video – Communicates with local office – Change channels via IP Group Membership (IPGM v2) protocol to join multicastIPTV: EconomicsThe IPTV Eco System Content Provider (TV Channels) Equipment Provider Delivery Network Software Enabling DeviceThe Old TV Model • Programs delivered through the cable or Satellite How do different parties earn money Content – Advertisement Distribution – Subscription Equipment/Device – one time BuySo, what’s wrong with this model Not Movies with commercials but… commercials loaded with bits of movies It’s a loselose situation for both content providers and consumers John Wanamaker the pioneer of departmental store “50 of my advertising expenditures are wasted. I just don’t know which 50” Increased sales of PVR reinforces this pointDelivery Network for TV •The old ways Cable or Satellite •The new ways Phone line, Cable, Satellite, FTTH The battle is on between the Cable companies and Telecom companiesWhy the battle • Every one wants a piece of others Pie Revenue from wired network and Long distance CallsTelcos Vs Cables Cable Telcos Advantages Advantages • Trusted delivery network for • Huge installed network TV • Trusted for it’s QOS Disadvantages Disadvantages • Existing infrastructure is Low • Doesn’t have huge installed speed base • Need to obtain permissions • Cannot support the huge from local communities to roll upfront investments out serviceƒ Cost Triple Play of Services Offer three services for less than 100Bottle Necks • Installation costs high • Customer Service European market research estimates that it costs €1517 (US1820) for every customer call to a Customer Service Representative (CSR). • DRM (Digital Rights Management) • New coding schemes to support high definition TV channelsThank You Questions Back UpBack UpBack up OECD Broadband subscribers per 100 inhabitants, by technology, December 2004 30 DSL Cable Other 25 20 15 OECD average 10 5 0 Source: OECD Korea Netherlands Denmark Iceland Canada Switzerland Belgium Japan Finland Norway Sweden United States France United Kingdom Austria Luxembourg Spain Germany Portugal Italy Australia New Zealand Hungary Ireland Poland Czech Republic Slovak Republic Mexico Turkey Greece Cable TV Bandwidth • A single downstream 6 MHz television channel may support up to 27 Mbps of downstream data throughput from the cable headend using 64 QAM (quadrature amplitude modulation) transmission technology. • Speeds can be boosted to 36 Mbps using 256 QAM. • Upstream channels may deliver 500 Kbps to 10 Mbps from homes using 16QAM or QPSK (quadrature phase shift key) modulation techniques, depending on the amount of spectrum allocated for service. • Using 64 QAM, upstream speeds can be raised to 30 Mbps. • This upstream and downstream bandwidth is shared by the active data subscribers connected to a given cable network segment, typically 500 to 2,000 homes on a modern HFC network.
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