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Use of sub-GHz frequencies in India

Use of sub-GHz frequencies in India. Authors:. Date: 2010-11-08. Who are we?. IIT Bombay (I ndian I nstitute of T echnology Bombay)*: Established by Government of India in 1958 IIT Bombay is the second-oldest institute of the IIT system in India

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Use of sub-GHz frequencies in India

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  1. Use of sub-GHz frequencies in India Authors: Date: 2010-11-08 Sid Shetty, TICET IIT Bombay

  2. Who are we? • IIT Bombay (Indian Instituteof Technology Bombay)*: • Established by Government of India in 1958 • IIT Bombay is the second-oldest institute of the IIT system in India • TICET (TataTeleservices IITB Centreof Excellencein Telecommunications)** • Joint initiative between IIT Bombay, Tata Teleservices Ltd and Depart of Telecom in India • Created to meet the broad objectives of capacity building and providing impetus to all round growth of Telecom industry in India • Serve as think tank to the Government and Industry decision makers • Contributor to existing IEEE 802.16 standard * http://www.iitb.ac.in/about/about_iitb.html ** http://ticet.iitb.ac.in/ticet/About_Us.html Sid Shetty, TICET IIT Bombay

  3. Abstract This contribution discusses the availability of sub-GHz spectrum in India, summarizes the importance of such spectrum for Indian broadband requirements and thereby proposes:- • To include 400MHz operation in the standard • Channel model study in the 400MHz band specific to Indian deployment scenarios Sid Shetty, TICET IIT Bombay

  4. Broadband in India • Tele-density in India is ~59%. Rural tele-density is at 26% and growing (leapfrogging to wireless is a major factor) 1 • ARPU is dropping (33% drop from 2009 to 2010) 2 • Prohibitive entry costs for operators to service rural India – low ROI. • Broadband penetration is a mere 1% of the number of telephone connections (wireless and wireline) in India.2 • 86% of Broadband connections use DSL implying that most of this growth is limited to bigger cities and metros with existing wireline infrastructure2 • Base Station infrastructure costs accounts for more than 80% of CAPEX. • CAPEX could reduce significantly : • 802.11 access technology, thanks to volumes! • Turning to sub-GHz bands with ‘friendlier’ propagation losses implying fewer base station deployments Sid Shetty, TICET IIT Bombay

  5. Sub-Ghz spectrum allocation in India • 902 – 928 MHz is not unlicensed in India (allocated for cellular services) • 434 – 438 MHz : Amateur band • 368 – 380 MHz : Fixed Mobile band Note: could be considered for rural communications on a case-by-case basis • 470 – 520 MHz : Fixed and Mobile services to be considered on a case-by-case basis • Other bands: • There may be scope for use of other bands that are allocated on a case-by-case basis • Spectral re-farming could be considered in cellular services’ band (890-960 MHz) and possibly other bands There is spectrum availability in the sub-GHz band that could be used for low-cost deployments in India Sid Shetty, TICET IIT Bombay

  6. Proposal • Propose to undertake a channel model study in one (or more) bands in the sub-GHz frequency range for Indian rural and urban conditions • 400MHz is a good starting point given • the spectrum availability situation in India • Align with bands available in other geos e.g. China ( 314-316 MHz, 430-434 MHz, 470-510 MHz) • Include 400MHz operation in the standard Sid Shetty, TICET IIT Bombay

  7. References • http://www.trai.gov.in/WriteReadData/trai/upload/PressReleases/767/August_Press_release.pdf • http://www.trai.gov.in/WriteReadData/trai/upload/PressReleases/768/quarterly_press_release_final.pdf Sid Shetty, TICET IIT Bombay

  8. Amateur Radio • Transmit power limitation: • 10 W for Restricted grade users • 25 W for General Grade users http://www.wpc.dot.gov.in/DocFiles/amateur_new_guidelines.pdf Sid Shetty, TICET IIT Bombay

  9. Figures Sid Shetty, TICET IIT Bombay

  10. Figure 1 : Tele-density in India Sid Shetty, TICET IIT Bombay

  11. Figure 2 : Broadband subscription in India Sid Shetty, TICET IIT Bombay

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