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Making way for novel broadband radio services

International Telecommunication Union Telecommunications Development Bureau. Making way for novel broadband radio services. Dr. Arturas Medeisis ITU-BDT Spectrum Management Expert. ITU Regional Workshop on Efficiency of the Frequency Spectrum Use in the Arab Region

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Making way for novel broadband radio services

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  1. International Telecommunication UnionTelecommunications Development Bureau Making way for novel broadband radio services Dr. Arturas Medeisis ITU-BDT Spectrum Management Expert ITU Regional Workshop on Efficiency of the Frequency Spectrum Use in the Arab Region Amman-Jordan, 5-7 Dec. 2011

  2. Scope of presentation • Why we need broadband? • Modifying existing mobile assignments • Assigning new spectrum • Other than mobile options? • Looking into the future? ITU Regional Workshop, Amman, 5-7 Dec 2011

  3. Importance of broadband • Enabling modern inclusive ICT services • Wireless BB provides faster deployment, especially to “green-field” underserved areas with poor infrastructure Radio Spectrum Services competition Consumer benefits Convergent ICT Wireless broadband services platform Inclusion Innovativeness Societal benefits IT services platform Economic growth ITU Regional Workshop, Amman, 5-7 Dec 2011

  4. Global data traffic forecasts ITU Regional Workshop, Amman, 5-7 Dec 2011

  5. Two directions • Creating opportunities for existing spectrum assignments to be “upgraded” to provide novel Broadband services: • i.e. Technological level re-farming • Seeking new spectrum assignment opportunities: • Exclusive licences • Overlay licences (shared access) ITU Regional Workshop, Amman, 5-7 Dec 2011

  6. Technological re-farming • Mostly concerns the possibility of upgrading old 2G spectrum to provide 3G/4G services • Especially the 900 MHz band, as it provides best coverage optimisation The concept of “sandwiching” broadband channel between narrow-band 2G channels Source: CEPT ECC Report 82 ITU Regional Workshop, Amman, 5-7 Dec 2011

  7. Upgrading 2G licences • 2G operators should be given cart blanche to freely decide on technological evolution within their assigned spectrum • Even typical 2 x 8...12 MHz spectrum blocks could be well used to accommodate broadband CDMA/OFDMA channels • Modern Software Defined Radio (SDR) Base Stations allow seamless re-organisation of network access from 2G (GSM) to 4G (LTE) in any channel combination ITU Regional Workshop, Amman, 5-7 Dec 2011

  8. New bands for broadband ITU Regional Workshop, Amman, 5-7 Dec 2011

  9. Importance of lower bands • Compare mobile OFDM coverage options for different bands (open area Hata model) ITU Regional Workshop, Amman, 5-7 Dec 2011

  10. The terms of licensing? • In the past new assignments were made to specific technology, e.g. GSM • Nowadays, NRAs are ill placed to decide on which broadband technology would become the winning proposition: • witness WiMAX vs LTE battle for dominance • Therefore it is important that from the start the new assignments are technology-neutral and flexible in terms of service offering (mobile vs. FWA vs. BS/IPTV etc.) ITU Regional Workshop, Amman, 5-7 Dec 2011

  11. Playing the neutrality card safe • Important to engineer sufficient safeguards into the spectrum assignments to ensure smooth functioning of neutrality • Primary technological solutions: • FDD/TDD-friendly solutions • Universal channel rasters • Block Edge Mask concept • Border coordination thresholds ITU Regional Workshop, Amman, 5-7 Dec 2011

  12. a) Initial assignment FDD duplex spacing Operator A Operator B Operator A Operator B b) Possible outright deployment of different technologies Operator A FDD uplink Operator B TDD block 1 Operator A FDD downlink Operator B TDD block 2 Operator A Combined contiguous TDD block Operator B Combined contiguous TDD block c) If both operators agree to use TDD technology, they must be allowed to swap their respective FDD blocks FDD/TDD flexibility ITU Regional Workshop, Amman, 5-7 Dec 2011

  13. TX Output Power Density (dBW/MHz) Assigned block Adjacent block Internal guard band (~1/2 system channel) PMAX 1st  system channel (typical size) 2nd  system channel (typical size) -36 -77 -89 0 F, from the block edge A B The BEM concept (I) ITU Regional Workshop, Amman, 5-7 Dec 2011

  14. PTx a c b ΔF The BEM concept (II) ITU Regional Workshop, Amman, 5-7 Dec 2011

  15. BEM implications • BEM favours homogenous deployment of uniform transmitters with gradual densification Source: CEPT Report 19 ITU Regional Workshop, Amman, 5-7 Dec 2011

  16. ITU-R work on mobile BB • Preparation of a new ITU-R Report “Analysis and assessment of global broadband wireless services and marketplace for IMT” • Series of workshops “IMT for the Next Decade” ITU Regional Workshop, Amman, 5-7 Dec 2011

  17. Turning to alternative options...

  18. BWA concept is still alive • Wireline quality dedicated radio links • Single connection for multimedia use • Network roll-out faster than DSL/fibre • Deployment in FS bands from 10 GHz and above Internet/ Packet Data BWA Switch / Central Station (CS) Control CS1 PSTN CSi CPE PC TV TV/ video contribution CSN ITU Regional Workshop, Amman, 5-7 Dec 2011

  19. Or even high density FS • E.g. 59 GHz, 64-66 GHz • Suitable for short hop bridging links in dense (urban) scenarios • High and flexible channel bandwidth: • from 100 MHz up to 2 GHz • 59 GHz applications could be licence-exempt, 64 GHz well suited for light-licensing ITU Regional Workshop, Amman, 5-7 Dec 2011

  20. Thinking further into the future • TV White Spaces (TVWS) – a medium-term flexible solution for on-demand (ad hoc) broadband connectivity ITU Regional Workshop, Amman, 5-7 Dec 2011

  21. How much White Spaces? • USA: • Some European countries: (UC Berkeley, 2010) (FP7’s FARAMIR, 2011) ITU Regional Workshop, Amman, 5-7 Dec 2011

  22. A closer national study • Poland: • Based on ITU GE-06 plan • 30 m 36 dBm Base Stations • Protection of interference-limited coverage of TV (NIT Wroclaw, 2011) ITU Regional Workshop, Amman, 5-7 Dec 2011

  23. A vision for TVWS SM solution UK, Ofcom ITU Regional Workshop, Amman, 5-7 Dec 2011

  24. Problems, issues to address • Protection of existing services: • Broadcasting Service • Wireless microphones (Programme Making Special Events) • Other (Radio Astronomy, Radionavigation, etc.) • Development of TV WSD technology: • stable technical characteristics, standardisation • link with geo-location database, security, integrity • business case? • Regulatory considerations: • regulatory mechanism for the Dynamic Spectrum Access • equipment type approval • enforcement issues (“FCC chip” idea, etc.) ITU Regional Workshop, Amman, 5-7 Dec 2011

  25. Conclusions • Fuelled by the constant proliferation of personal “smart” phones, tablets, etc., the growth in demand of wireless broadband services will remain an important factor well into the future • NRAs should consider all available options and strive to satisfy the demand by the industry in the most forward-looking and flexible manner ITU Regional Workshop, Amman, 5-7 Dec 2011

  26. Thank you!Dr. Arturas Medeisisam@sm-jazz.lt ITU: Committed to connecting the World ITU Regional Workshop, Amman, 5-7 Dec 2011

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