WirelessandMobileNetworkingFacts,Statistics,andTrends.pdf

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2017-03-13 发布于湖北
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WirelessandMobileNetworkingFacts,Statistics,andTrends.pdf

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WirelessandMobileNetworkingFacts,Statistics,andTrends

Wireless and Mobile Networking: . Facts, Statistics, and Trends Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@ Audio/Video recordings of this lecture are available at: /~jain/cse574-14/ Washington University in St. Louis /~jain/cse574-14/ 2-1 ?2014 Raj Jain Overview . 1. Wireless: History 2. Wireless Infrastructure Hype Cycle 2013 3. Wireless Speed Trends (Moore’s Law) 4. Global Mobile Data Forecast [Cisco] 5. Trends Washington University in St. Louis /~jain/cse574-14/ 2-2 ?2014 Raj Jain Wireless: History 1880 ? 1880: Hertz discovered electromagnetic.waves ? 1898: First commercial radio data service 1900 ? 1921: First Mobile Radio: Wireless dispatch system for Detroit Police 1920 ? 1946: First Mobile Telephone Service: In St. Louis by ATT. Half-duplex ? Push to talk. 1940 ? 1970: First Cellular Phone Service: ATT Chicago ? 1971: First Wireless Data Network: Aloha at University of Hawaii 1960 ? 1990: First Commercial WLAN Product ATT WaveLAN 1980 ? 1997: First WLAN Standard - IEEE 802.11 2Mbps 2000 Washington University in St. Louis /~jain/cse574-14/ 2-4 ?2014 Raj Jain Life Cycle of Technologies . $ Potential Time Research Hype Dis Success or illusionment Failure Washington University in St. Louis /~jain/cse574-14/ 2-5 ?2014 Raj Jain Wireless Networking Infrastructure Hype Cycle 2013 . Ref: A. Chokalingam, “Gigabit Access in Wireless,” Second Annual NKN Workshop, Bangalore 18 October 2013, http://nkn.in/nkn-workshop2013/images/presentation/2nd_annual_nkn_workshop_ac_d4.pdf Washington University in St. Louis /~jain/cse574-14/ 2-6 ?2014 Raj Jain Wireless Innovations ? 5G: Beyond 4G. Expected in 2020. 100X LTE . ? Cognitive Radio: Find unused channels and use them ? 802.11ah: Low-speed coordinated communication for M2M ? TeraHz Waves: Sub-millimeter waves. 1 mm to 0.1mm wavelength. 0.3 to 3THz. Between Radio and light ? 802.11ad: WiGig. Gigabit Wireless ? Smart Antennas: Antenna arrays that can orient towards direction of arrival ? LTE-Advance