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

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

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

ITU Regional Workshop, Amman, 5-7 Dec 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 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 Source: CEPT ECC Report 82 The concept of sandwiching broadband channel between narrow- band 2G channels

ITU Regional Workshop, Amman, 5-7 Dec Upgrading 2G licences 2G operators should be given cart blanche to freely decide on technological evolution within their assigned spectrum Even typical 2 x 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 New bands for broadband

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

ITU Regional Workshop, Amman, 5-7 Dec 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 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 FDD/TDD flexibility Operator A Operator B Operator A Operator B FDD duplex spacing a) Initial assignment 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 c) If both operators agree to use TDD technology, they must be allowed to swap their respective FDD blocks Operator A Combined contiguous TDD block Operator B Combined contiguous TDD block

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

ITU Regional Workshop, Amman, 5-7 Dec The BEM concept (II) ΔF P Tx c b a

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

ITU Regional Workshop, Amman, 5-7 Dec 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

Turning to alternative options...

ITU Regional Workshop, Amman, 5-7 Dec 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 CS N CS 1 CS i Internet/ Packet Data PSTN TV/ video contribution BWA Switch / Central Station (CS) Control CPE PC TV

ITU Regional Workshop, Amman, 5-7 Dec Or even high density FS E.g. 59 GHz, 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 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 How much White Spaces? USA: Some European countries: (UC Berkeley, 2010) (FP7s FARAMIR, 2011)

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

ITU Regional Workshop, Amman, 5-7 Dec 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 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 Thank you! Dr. Arturas Medeisis ITU: Committed to connecting the World