Presentation on theme: "Mobile Telephony Dr T.H. Chowdary * Director, Center for Telecom Management & Studies * Chairman, Pragna Bharati (Intellect India), AP * Former Information."— Presentation transcript:
Mobile Telephony Dr T.H. Chowdary * Director, Center for Telecom Management & Studies * Chairman, Pragna Bharati (Intellect India), AP * Former Information Technology Adviser, Government of A.P Chairman & Managing Director Videsh Sanchar Nigam Ltd., Bombay T: +91 (40) (O) (R) F: +91 (40) (O) Narayanamma Institute of Technology, Hyderabad, 27th June 2009
THC_CTMS_ June Mobile Telephony Invented in Bell Labs in the 1980s NMT-400, NMT-960 AMPS – Advanced Mobile Phone Service ( to distinguish from walkie -talkie) UK had a different system – TACS GSM, EDGE,3G,4G Mobile Data-WIFI, WIMAX
THC_CTMS_ June Crucial Elements Radio Spectrum Allocation of channel to a talker Slicing up area into cells Each cell to have a set of channels Number depending upon talker density in the cell As density increases, cell size decreases & vice versa As mobile, moves from cell to cell, user must be handed over from one cell to next – computers do this by measuring signal strength. Encoding & Compression to squeeze more channels into a given spectrum.
THC_CTMS_ June GSM & CDMA TDMA for GSM Code division multiple access CDMA is more spectrum efficient i.e more channels in a given b/w India has both in use Some companies ( eg. Reliance) has both the systems in the same territory
THC_CTMS_ June Cell Phones Becoming smaller, lighter, long-lasting batteries, multi-functional (camera, radio, picture, Internet connecting, data & mail carrying ) multi-mode (GSM /CDMA ) multi-band! Prices falling & ($ 2000 in 1980s to $ 500 in 1992) Falling from Rs. 10/12 k in 1995 to Rs. 800 in Y 2009 fancy models Rs. 45k
THC_CTMS_ June PCI A X TSP Time (a) Affordability A PCI/ Tele-Service Price - PCI: Per Capita Income - TSP: Telephone Service Price - A: Affordability Why so fast growing
THC_CTMSS376_Feb'087 Affordability of Telephone Revenue/Line * at current exchange parity $ 125$250$125 Rev. as% of PCI Affordability PCI Tel. Svce.Price
THC_CTMS_ June How many World Population: 650 cr (Land) phones: 150 cr Cell phones: 350 cr China – 700; India-400; USA- 275 (mln) Many countries in EU, Japan, HK, Singapore have 120 to 190 phones for 100 people Prepaid > Post paid No names, but numbers!
THC_CTMS_ June INMARSAT Mobile services to ships, aircraft, deserts, marshes polar regions, forests
THC_CTMS_ June New Technologies WIFi WIMAX Spectrum – dehoarding from Defence services Number Portability 3G, 4G...
THC_CTMS_ June Affordability Adversely affected by Licence fees; Revenue Shares; Spectrum Auctions; Service Tax Reduce or put them to use to extend network Put Internet in all schools,colleges, libraries, hospitals and R&D to create Intellectual Property(IP) by Indians, for India in India. Infrastructure sharing – BTS towers Virtual Network Service Provides - Virgin Mobile
THC_CTMS_ June Cell-Phone or Hell Phone Etiquette Don't use in lifts, waiting rooms, buses, planes, trains, class-rooms, auditoria. Don't walk while talking, move to a corner. Don't speak loud Don't gesticulate
THC_CTMS_ June Realising the Vision (1/2) We will produce electricity so cheap that only the rich can afford to burn candles – Thomas Alva Edison We will make telephony cheaper than post-card. -Dhirubhai Ambani Haath Haath mein telephone Gaon Gaon mein Internet - Dr T.H.Chowdary
THC_CTMS_ June Realising the Vision (2/2) Numbers, not names Communicate for work; Commute for pleasure Death of Distance Postalisation of tariffs
THC_CTMS_ June Dhanyawad: Thank You Any Questions?