SCTE on-line "Live Learning" Presentation January 2005


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Home Networking Technologies; Wired, Wireless and Retrofit

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SCTE on-line "Live Learning" Presentation January 2005

  1. 1. Home Networking Technologies Justin J. Junkus, President, KnowledgeLink, Inc [email_address] and Stephen R. Brazil, Director Home Networking Depot, Inc. [email_address]
  2. 2. Agenda <ul><li>What is Home Networking </li></ul><ul><li>Review the market </li></ul><ul><li>Contrast leading technologies </li></ul><ul><li>Discuss limitations </li></ul><ul><li>Discuss synergies for applications </li></ul><ul><li>Introduce Home Networking Configurations </li></ul>
  3. 3. Connecting a Home Network A fire hose to a garden hose we have to do better ?
  4. 4. Home Networking Defined “ Home networks link [the] independent systems and devices, so they can share information and entertainment content and work together.” Source: Consumer Electronics Association, Techhome Div. A “Networked Home&quot; is just that a home that is connected by a network from room to room and to the world outside” Source: Wiring Americas’ Homes. Our definition…”Any source of video, audio, voice, data, and telemetry brought into or generated within the home that is available everywhere within the premises and via IP access (internet) outside the home”.
  5. 5. Home Owner’s Interest Home Networking Applications
  6. 6. Why are Home Networks important? <ul><li>58% of All US households have at least 1 PC </li></ul><ul><li>62% of all PCs purchased are additional to the household - NOT REPLACEMENT PCs. </li></ul><ul><li>48% of today’s workforce works from home at least one day a week. </li></ul><ul><li>56% of US households have internet access. </li></ul><ul><li>26% of US households have a home theatre. </li></ul><ul><li>Over 37 million homes will have DSL or Cable Modem service by 2005. </li></ul><ul><li>The home networking market is expected to grow 58% in 2005. </li></ul><ul><li>Structured wiring is now in 42% of NEW construction and expected to grow to 62% by 2006. </li></ul>
  7. 7. Residential Structured Wire Installed as a percentage of total new home construction
  8. 8. Residential Structured Wire Completed Homes with Installed Structured Wire Home Networks 1.65m 1.10m 226k 330k 455k 615k 716k 1.03m 1.62m 1.58m 1.52m 1.71m 1.70m 1.77m
  9. 9. Home Networking Market Size 2Q04 Installed Communications Services as compared to overall US Housing Units
  10. 10. Bandwidth and QoS Drive Technology Choices 1.5 Video conference 40 - 50 Typical House 0.1 Toll Qual. IP Phone 1 Online game 1 Internet browsing 5.8 Home Theatre Audio 8 HQ MPEG 2 20 HDTV Rate Mbps Service type
  11. 11. Home Networking Medium Alternatives (by primary medium) Key Points: 1. These technologies are NOT always mutually exclusive. 2. Most have been modified to run over alternate mediums .
  12. 12. Ethernet - CSMA/CD <ul><li>Proven technology </li></ul><ul><li>Gigabits of bandwidth </li></ul><ul><li>Cat5 medium (or coax) </li></ul><ul><li>Depends upon other protocol layers for QoS </li></ul>
  13. 13. Ethernet <ul><li>Modulation depends upon layer 1 protocol </li></ul><ul><li>MAC </li></ul><ul><ul><li>CSMA/CD is relatively simple </li></ul></ul><ul><ul><li>Variations </li></ul></ul><ul><ul><ul><li>Random send </li></ul></ul></ul><ul><ul><ul><li>Polling </li></ul></ul></ul><ul><ul><ul><li>Reservation-based </li></ul></ul></ul>
  14. 14. 802.xx Wireless Three separate standards <ul><li>Modulation </li></ul><ul><ul><li>802.11 b: Complementary Code Keying (CCK) </li></ul></ul><ul><ul><li>Optional Packet Binary Convolutional Code (PBCC) </li></ul></ul><ul><ul><li>802.11 g: CCK and OFDM </li></ul></ul><ul><ul><ul><li>Optional PBCC and CCK-OFDM </li></ul></ul></ul><ul><ul><li>802.11 a: OFDM </li></ul></ul><ul><li>Operating band: </li></ul><ul><ul><li>802.11 b and g: 2.4 GHz </li></ul></ul><ul><ul><li>802.11 a: 5.2 GHz </li></ul></ul><ul><li>MAC is CSMA/CA </li></ul><ul><ul><li>802.11 e provides some QoS </li></ul></ul>
  15. 15. 802.11x - Wireless <ul><li>Bandwidth </li></ul><ul><ul><li>802.11 b: 11 Mbps. </li></ul></ul><ul><ul><li>802.11 g: 54 Mbps. </li></ul></ul><ul><ul><li>802.11 a: 54 Mbps. </li></ul></ul><ul><li>QoS is limited </li></ul><ul><ul><li>OK for data </li></ul></ul><ul><ul><li>Challenging for voice </li></ul></ul><ul><ul><li>Problem for video </li></ul></ul><ul><li>Has a role as “extension” </li></ul>
  16. 16. HomePNA Home Phoneline Alliance <ul><li>Modulation is FDQAM </li></ul><ul><ul><li>multiple copies of signal </li></ul></ul><ul><ul><li>spectrum at different frequencies </li></ul></ul><ul><li>Operates in 4-21 MHz band (128 Mbps) </li></ul><ul><li>Asynchronous MAC provides QoS </li></ul>
  17. 17. HomePNA Synchronous MAC
  18. 18. H omePNA <ul><li>Bandwidth = 128 Mbps (PHY) </li></ul><ul><li>Effective throughput = 100 Mbps. </li></ul><ul><li>QoS provided by Synchronous MAC </li></ul><ul><ul><li>Latest version (3.0) based upon ITU G.pnt3 </li></ul></ul><ul><ul><li>Cross-application </li></ul></ul><ul><ul><li>Intra-application (can prioritize video streams) </li></ul></ul>
  19. 19. HomePlug <ul><li>HomePlug </li></ul><ul><ul><li>Modulation = OFDM with DQPSK and DBPSK </li></ul></ul><ul><ul><li>Operates in 4.5 - 21 MHz band </li></ul></ul><ul><ul><li>MAC = CSMA/CA </li></ul></ul><ul><li>HomePlug AV </li></ul><ul><ul><li>Modulation = OFDM with 1024 QAM </li></ul></ul><ul><ul><li>Reverts to DBPSK with noise </li></ul></ul><ul><ul><li>Operates in 2-30 MHz band </li></ul></ul><ul><ul><li>TDMA-based MAC </li></ul></ul>
  20. 20. HomePlug <ul><li>Bandwidth </li></ul><ul><ul><li>HomePlug: 14 Mbps. </li></ul></ul><ul><ul><li>HomePlug AV: 200 Mbps. PHY (120 Mbps throughput) </li></ul></ul><ul><li>QoS </li></ul><ul><ul><li>HomePlug: 4 levels (typically only one used) </li></ul></ul><ul><ul><li>HomePlug AV: 8 levels </li></ul></ul><ul><ul><li>Cross-application, not intra-application </li></ul></ul><ul><li>Security (Mandatory, at chip level) </li></ul><ul><ul><li>HomePlug: 56 bit DES </li></ul></ul><ul><ul><li>HomePlug AV: 128 bit AES </li></ul></ul>
  21. 21. MOCA Multimedia over Coax Alliance <ul><li>Modulation is OFDM </li></ul><ul><ul><li>Multiple frequencies at lower bit rate; </li></ul></ul><ul><ul><li>Serial(high bit rate for entire data word) </li></ul></ul><ul><ul><li>to parallel conversion (lower bit rates for bits in word, </li></ul></ul><ul><ul><li>each bit modulates separate carrier) </li></ul></ul><ul><li>Operates in a 50 MHz range in 900 MHz band </li></ul><ul><li>Discuss MAC (we need LOTS more info) </li></ul>
  22. 22. MOCA <ul><li>Proprietary protocol </li></ul><ul><li>Bandwidth = 270 Mbps. </li></ul><ul><li>Effective throughput = 125 - 130 Mbps. </li></ul><ul><li>QoS - probably cross-application, </li></ul><ul><li> probably not intra-application </li></ul>
  23. 23. Basic Structured Wire Installed during new home construction Centralized network electronics Cabling Home Run from cabinet Cabling certified before dry walling Services enter dwelling from cabinet RF components SCTE compliant Wall jacks all Keystone type
  24. 24. HomePNA 2.0 POTS Wiring for existing premise applications POTS wiring daisy-chained typically Wiring will support upto 10Mbps HomePNA 2.0 will support 25 devices
  25. 25. HomePNA 3.0 POTS & Coaxial Wiring for existing premise applications
  26. 26. Questions?