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4 mobilenetworks - Mobile Networking Concepts and Protocols...

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Mobile Networking Concepts and Protocols CNT 5517 Dr. Sumi Helal, Ph.D. Professor Computer & Information Science & Engineering Department University of Florida, Gainesville, FL 32611 [email protected] Some slides are adapted from Dr. Dave Johnson Notes
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Lecture Contents Evolution of Mobile Networks • GSM • GPRS Mobile IP Wireless IP QoS Issue
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Mobile Networking Evolution • 1 st Generation Wireless (1970s) – Ex: AMPS ( USA: 900Mhz); C-Nets (Germany: 450Mhz); NMT (Switzland: 450, 900Mhz), … Analog technology Poor spectral efficiency Voice only • 2 nd Generation Wireless (1980s) – Ex: GSM : 900 and 1800Mhz, 9.6kbps, FDMA+TDMA; CDMA(IS-95A/B) , 900 and 1800Mhz, 14.4/64kbps, FDMA+CDMA Digital or Analog + Digital technology Higher spectral efficiency through Multiple Access Air interfaces: FDMA, TDMA, CDMA Voice and limited data (circuit switch wireless data)
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Mobile Network Evolution (Cont’d) • 3 rd Generation Wireless (2000’s) – Ex: UMTS in Europe, 114Kbps-2Mbps; CDMA2000 in the US, up to 2Mbps – Better support for wireless data – Mobile Internetworking, or wireless packet data (GPRS, EDGE, Mobile IP) • 4 th Generation Wireless (future) – Wireless and Mobile Multimedia – Smart Antenna, Spatial Division Multiple Access – Research stage: ACTS , …
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Generations of Terrestrial Commercial Wireless Systems Time Capability Enhancements by Generation Mobile telephone Analog cellular technology Macro cells Digital voice, messaging & data services Fixed wireless loop, wireless LAN services Digital cellular & PCS Macro, micro & pico cells Greatly enhanced data communications services Narrowband and wideband multimedia services Higher spectrum for wideband applications Macro, micro & pico cells Very high bit rate (> 2 Mb/s) multimedia enhancements 1980 1990 2000 2010 1GW 2GW 3GW 2020 IMT-2000 and Beyond Future Evolution Time 1980 1990 2000 2010 2020 Globalization Nat’l Reg’L Int’l Historical (2G) Recent Past (3G) Current and Future (3G and Beyond) Standardization Activities Relative to the Generations
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Mobile Networking Evolution Smart Antenna WCDMA, cdma2000 FDMA+TDMA, CDMA FDMA Air Network 5~60GHz 2000MHz 900, 1800MHz 900 Frequency (MHz) (Beyond IMT- 2000) (2005~) IMT-2000 (2000~) Digital Cellular, PCS (1980s~) Analog Cellular (1970s) Name All-IP-based IP-based (GPRS, Mobile-IP) Circuit-based Digital (GSM,IS-95) Circuit- based Analog (PSTN) Core Network 4th 3rd 2nd 1st
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Mobile Networking Evolution < 20Mbps < 2Mbps < 2Mbps < 384kbps < 144kbps < 10kbps NA Data service Bandwidth ITU-R (WP8F/ WP8D) ITU-R (TG8/1), 3GPP/3GPP2 SDO (IETF,ETSI) Nation- based Main Organizer same services as fixed telecomm. Voice phone, High rate data (web surfing) Voice phone, Low bit rate data (short msg.) Voice phone Main Services 4th 3rd 2nd 1st
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GSM : Global System for Mobile communication Configuration MS : ME (IMEI-International Mobile Equipment Identity) + SIM
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