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Residential Broadband Internet Access in the United States: the Changing User Experience

Residential Broadband Internet Access in the United States: the Changing User Experience. Dr. William Lehr Executive Director MIT Internet & Telecoms Convergence Consortium wlehr@rpcp.mit.edu http://itel.mit.edu. Presentation to Sprint Research Symposium Lawrence, Kansas March 8-9, 2000.

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Residential Broadband Internet Access in the United States: the Changing User Experience

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  1. Residential Broadband Internet Access in the United States: the Changing User Experience Dr. William Lehr Executive Director MIT Internet & Telecoms Convergence Consortium wlehr@rpcp.mit.edu http://itel.mit.edu Presentation to Sprint Research Symposium Lawrence, Kansas March 8-9, 2000

  2. Outline • What is broadband? • Cable vs. xDSL • Cable availability • Issues and Questions © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  3. What is broadband? • “High speed” • greater than 200 Kbps (not 56K/ISDN) • both directions? (not DirectPC) • how measured? (CIR vs. burst) • “Always on” • Internet access • Access to standard Internet services: email, web browsing, telnet, and FTP © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  4. What technologies? • Cable modems (since 1996) • pre- and DOCSIS modems • xDSL (since 1999) • ADSL, SDSL, HDSL, G.Lite, etc. • LMDS & other wireless (2000?) • Sprint’s MMDS plans © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  5. Cable vs. DSL • Similar? • “High speed”, Always on, Internet access • Shared Internet access • Basic infrastructure ubiquitously available • Different? • Cable more mature, more standardized • Cable Operators vs. Local Telephone companies? • Bandwidth limitations? Sharing? Location? • Residential vs. Business (initially) • Cable early leader, DSL follows... © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  6. 200 - 2000 homes passed per node Coaxial Copper Server, Accounting, Cache, etc. Neighborhood Optical Fiber Node ... Internet Cloud ... Optical Fiber Coaxial Copper Router Neighborhood Node Twisted-pair Copper Server, Accounting, Cache, etc. Optical Fiber DSLAM Digital Loop Carrier ... (DLC) Internet Cloud ... Twisted-pair Copper Optical Fiber Router DSLAM Digital Loop Carrier (DLC) Cable vs. xDSL © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  7. Shared LAN: bandwidth and security issues Headend Server, Accounting, Cache, etc. Cable Internet Cloud Router Central Office Connections to Internet backbone and other ISPs Server, Accounting, Cache, etc. DSL Internet Cloud DSLAM Router Varying distances from CO, wire groupings etc. Shared (muxed) bandwidth Architecturally similar, but withdifferent uncertainties

  8. Pricing • $40-$60/month for residential service • Compare vs. 2nd POTS line + dialup ISP account • Higher installation charges typical • Prices much higher for DSL commercial services • Expect prices to fall….$40 or lower (?) • Competition • Free ISPs © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  9. Availability © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  10. Cable Deployment - 1998 1996 1997 1998 © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  11. Cable Modem Deployments • Broadband far from universal • 781 communities in US in 232 (3,133) counties through mid-1999 • 10% of counties, 43%* of population • Deployments progressing rapidly (65% cable systems 2-way) • Still early phase • Deployment first to largest, affluent communities • Of largest 100 counties, 69 have modems • Where you would expect • Strong MSO effect • MediaOne clear leader • Different strategies, different infrastructure © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  12. Demographics of cable modem deploymentsthrough June 1999 © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  13. Broadband impacts • Future of Internet is broadband access… • Broadband users... • More experienced Internet users • Richer, better educated, etc. • Like early adopters of Internet • More time on line… • Combine with telephone and other usage • Move PC to living space (??) • Wireless in-home networks (mobility, convenience) • “Always on” critical • Save connection time • Enable push and other capabilities © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  14. Cable modem penetration: Prognosis • Much higher than we have seen… • Mergers (AT&T/TCI/MediaOne, Time-Warner/AOL) • Little real marketing yet: supplier push weak • Doubts about market acceptance • Fears re customer service costs • Little (if any) competitive pressure • “Broadband content” in its infancy • Internet not yet fully mainstream • Standards, regulation © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  15. Issues and Challenges • Traffic management • More bursty (self-similarity problem) • Regulatory policy • Line sharing for DSL • Cable unbundling ??? • New applications • Telephony over cable, over DSL • Streaming media • Napster, etc. © Gillett & Lehr, Residential Broadband Internet Access in U.S.

  16. Issues and Challenges • New networks: content delivery networks • Push and pull… • Congestion • Managing consumer bandwidth expectations • Cable: upstream, DSL: cross-talk • Collocation space scarcity • Always on, Security (Privacy) © Gillett & Lehr, Residential Broadband Internet Access in U.S.

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