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Home networking standards in ITU-T SG15

Home networking standards in ITU-T SG15. Bilel Jamoussi ITU/TSB. Highlight of Current Activities. Recommendations for Access/Home Networks

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Home networking standards in ITU-T SG15

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  1. Home networking standards in ITU-T SG15 Bilel Jamoussi ITU/TSB

  2. Highlight of Current Activities • Recommendations for Access/Home Networks • G.hn: OFDM-based 1 Gbps unified technology operating over “anywire” (PLC, phoneline, coax) for very high speed home networking, and other access applications such as demand side management, in-home energy management, and more. Coexistence between multiple in-home PLC systems and also coexistence of access PLC with in-home PLC is a key issue. • G.hn LCP: G.hn Low Complexity Profile (low power consumption, low cost, 25 MHz band, reduced data rate 2-18 Mbps) for home automation, automotive, and many other green applications. • ITU-T family of NB-PLC recommendations (G.9901/2/3/4): OFDM-based high data rate NB-PLC transceivers for demand side management, distribution automation, AMI, in-home energy management, home automation, PEV charging, etc. • G.9970/1/3: Generic home network transport architecture, Requirements for IP home networks, and Protocol for identification of home network topology. • G.fast: Transport technology for metallic cable between a distribution point of FTTdp (Fiber to the distribution point) to customers. This provides the best aspects of ‘Fiber to the home’ and ‘ADSL’

  3. Strategic Direction Home networking/PLC related Standards Note: Work on harmonizing with ITU-T Recommendations is on-going. Currently, it does not support G.9972 and interferes with G.hn.

  4. Challenges • The continuing customer demand for ever higher bit rate services will require standards covering all aspects of in-premises networking transceivers operating over metallic conductors. • The support of smart grids will require standards covering all aspects of narrowband and broadband communications and their management across the power grid from generation to load. Given the interdisciplinarity nature of smart grid applications, it is expected that a high degree of cooperation with other ITU Study Groups as well as other International Bodies such as IEC is required.

  5. Next Steps / Actions • ITU-T’s role in cooperation with other bodies • The power grid often crosses international or jurisdictional boundaries, but applications and devices must interoperate regardless of those boundaries • The Telecom/Power/CE convergence for the Smart Grid will drive a new echo-system of products and this must happen under the auspices of International SDOs • ITU-T can have a major role in facilitating the convergence of the communications, power, and CE worlds • Cooperation between the major International SDOs is key to success!!

  6. Supplementary Slides

  7. ITU-T family of PLC Recommendations Highestperformance G.9960/61 (G.hn) 2-100 MHz G.9960/61:Multiple media, bit rates of hundreds Mb/s to 1Gb/s; MIMO for PLC; BB networking & entertainment G.9960/61 LCP:Reduced bit rate (5-20 Mb/s), complexity, and power consumption G.9960/61 (G.hn LCP) 2-25 MHz G.990x - NB PLC family: Bit rates up to 1 Mb/s, high robustness; low complexity and power consumption G.990x (G.hnem, G3, and PRIME) 9-490 kHz Lowestcost

  8. NB-PLC Recommendations • Low complexity OFDM-based NB-PLC technology optimized for Smart Grid and home automation, addresses both access (low/medium voltage distribution lines) and in-home applications at frequencies below 500 kHz • Following Recommendations were recently approved: • G.9901 (11/2012): Narrow-band OFDM power line communication transceivers - Power spectral density (PSD) specification. • G.9902 (G.hnem) (10/2012): Narrow-band OFDM power line communication transceivers – G.hnem Cenelec A, B, CD, and FCC. • G.9903 (G3-PLC) (10/2012): Narrow-band OFDM power line communication transceivers – G3-PLC Cenelec A, B, FCC and ARIB bandplan. • G.9904 (PRIME) (10/2012): Narrow-band OFDM power line communication transceivers – PRIME Cenelec A.

  9. G.hn suite of BB-PLC Recs • Best-in-class home networking performance (up to 1 Gbps) supporting all types of inside wiring: • Powerline, Coax, Phoneline, CAT 5 • Best-in-class ElectroMagnetic Compatibility (EMC) control tools (in cooperation with ITU-R experts) • PSD limit and shaping, fixed & dynamic frequency notching • Necessary tools to meet the ucoming CENELEC prEN 50561-1 requirements • Dynamic power control minimizes transmitted power • G.hn Recommendations: • G.9960 (12/2011) Physical layer (support of relay nodes) • G.9961 (06/2010) Data link layer (supports full QoS and multicast) • G.9962 HN management (including BBF TR69 support) • G.9963 (12/2011) MIMO (advanced performance) • G.9964 (12/2011) HN power spectrum limits for EMC • G.9972 (06/2010) coexistence with other broadband PLC systems

  10. G.9972 BB-PLC coexistence • An in-home PLC network is not contained within the home • PLC signals in neighboring apartments will interfere with each other • The meter can act as a gate, but in many cases offers only a few dB of signal attenuation so that also in-home and utility PLC networks will interfere • Problem is worsened by: • An increase in residence density, rural areas are less affected • Cross-cable coupling in multiple dwelling units • Penetration of PLC technology • Usage of PLC spectrum is not regulated so that any PLC technology can use channel resources without having any legal obligation to protect other PLC technology from interference • Given the availability of multiple non-interoperable PLC standards (IEEE 1901-FFT, IEEE 1901-Wavelet, G.996x (G.hn), IEC-ISO/IEC 12139-1) and a plethora of non-interoperable proprietary technologies (HomePlug AV/Extended, HomePlug Green PHY, Panasonic HD-PLC, UPA Powermax, Gigle MediaXtreme, etc.), the issue of mutual interference can hinder the success of PLC • The solution to interference between non-interoperable PLC technologies is “coexistence,” which is a resource sharing protocol that allows PLC technologies to share the medium in an orderly way

  11. cntd; G.9972 BB-PLC coexistence • The Inter-System Protocol (ISP) is a broadband PLC coexistence scheme that allows coexistence of up to four simultaneously present PLC technologies • It has been included in the IEEE 1901 PHY/MAC standard • It is standardized as a stand-alone recommendation in ITU-T G.9972 • The ISP coexistence scheme in G.9972 can be used to ensure: • That in-home, access, and Smart Grid SDO-based broadband PLC will coexist – it currently supports coexistence between IEEE 1901-FFT, IEEE 1901-Wavelet, and G.hn and can be modified to include also IEC-ISO/IEC 12139-1 • That the operation of Smart Grid and home networking devices can be decoupled and allowed to mature at their traditional obsolescence rate • That utilities and service providers can avoid resolving service issues caused by interference between non-interoperable PLC devices supporting different applications • In one word, coexistence=“insurance that PLC will not stop working” due to interference created by neighboring non-interoperable devices • As a response to concerns that some vendors may not implement ISP in their products, PAP 15 of SGIP made the strong recommendation to NIST that all broadband PLC technologies must implement ISP and also turn it on at all times • For the success of coexistence it is necessary to have the availability of an international and stand alone standard, and G.9972 ensures this

  12. What is FTTdp ? • A broadband access solution taking fibre to a distribution point (FTTdp) very close to the customers premises, with total wire length to the customers’ transceiver up to 250m. • It is expected that the bulk of the loop lengths may be in the order 30 to 50m. On 30 m loops, aggregate data rates up to at least 500 Mb/s should be supported on a single pair.

  13. FTTdp/G.fast “raison d’être” • To provide the best aspects of ‘Fibre to the home’ and ‘ADSL’: • Fibre to the home bit-rates • customer self-installation like ADSL

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