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Home networking standards in ITU-T SG15

Home networking standards in ITU-T SG15. Yoichi MAEDA ITU-T SG15. 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 Yoichi MAEDA ITU-T SG15

  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. • G.hnem: OFDM-based high data rate NB-PLC for demand side management, distribution automation, AMI, in-home energy management, home automation, PEV charging, etc. • G.9970/9971/9973: Generic home network transport architecture, Requirements for IP home networks, and Protocol for identification of home network topology.

  3. Strategic Direction Home networking/PLC related Standards The issue of updating coexistence G.9972 is that the ISO/IEC 12139-1 broadband PLC standard coexist with G.hn and IEEE 1901.

  4. Challenges Remote Management of Customer Premises Equipment (CPE) • Draft new Recommendation ITU-T G.9980 (ex. G.cwmp), Remote management of CPE over broadband networks – CPE WAN Management Protocol (CWMP) for TAP • The Broadband Forum (BBF) CPE WAN Management Protocol (CWMP) suite of specifications based on BBF TR-069 is by far the mostly widely practiced method for remote management of CPE • ITU-T references BBF CWMP in G.9960, G.9970, G.997.1 • ETSI has standardized BBF CWMP in ES 203 069 • ATIS references BBF CWMP in its specifications • IETF has coordinated its work with BBF CWMP • ISO/IEC is encouraged to align its CPE management standards with the existing worldwide practice

  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. G.hn suite of Recommendations • Best-in-class home networking performance (up to 1 Gbps) supporting all types of inside wiring with one technology: • Powerline, Coax, Phoneline, CAT 5 • Best-in-class control of ElectroMagnetic Compatibly (EMC) & coexistence (developed in cooperation with ITU-R experts) • PSD limit and shaping • Both permanent and dynamic frequency notching • Dynamic power control minimizes transmitted power without sacrificing QoS • Automatic coordination with neighbor networks • G.hn Recommendations: • G.9960 Physical layer (support of relay nodes for expanded coverage) • G.9961 Data link layer (supports full QoS and multicast) • G.9962 HN management (including BBF TR69 support) • G.9963 MIMO (advanced performance) • G.9964 HN power spectrum limits for EMC • G.9972 coexistence with other broadband PLC systems

  8. G.hnem suite of standards • 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, including all CENELEC bands • Includes support for PRIME and G3-PLC in stand alone Normative Annexes • G.hnem Recommendations: • G.9955 physical layer • G.9956 data link layer • Approval expected for Dec. 2011

  9. 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

  10. 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

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