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Circuit switched systemscreate fat pipes physical layerPacket data systems create fat pipes physical layershare pipe eff

Seamless extension of the Internet (all current applications work) ... The

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Circuit switched systemscreate fat pipes physical layerPacket data systems create fat pipes physical layershare pipe eff

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    Rajiv Laroia Founder and CTO Flarion Technologies flash-OFDM --- Mobile Wireless Internet Technology Background Comparison with 3G Advantages of flash-OFDM for data Mobility management flash-OFDM Air-Interface Technology Mobile Wireless Internet 100M Internet users Of whom only 6% have broadband access 100M cellular users Of whom only 5% use their cell phones for data A Huge Untapped Market The Immediate Opportunity (U.S.) The right technology, marketing and partnerships will unlock the vast potential for wireless Internet services Sources: Nielsen, Gartner Dataquest Another Air Interface? North American CDMA 2000 1xRTT CDMA 2000 1xEV DO (HDR) CDMA 2000 1xEV DV CDMA 2000 3x European and Japanese GPRS/EDGE (2.5G) UMTS Wideband CDMA Chinese TD-SCDMA Evolutions of circuit switched architectures Are these really designed for data? Goals of a Data System Affordable (price per megabit) Scalable architecture Broadband (user experience) Interactive/low delay End-to-end IP with IP networking Seamless extension of the Internet (all current applications work) The Mobile Broadband Challenge Data and Voice are Different Radio is an inherently unreliable transmission medium when compared to a wired link Impairments due to interference and fading create errors Current mobile wireless systems were designed for circuit voice Circuit voice is very tolerant of transmission errors The Wired Internet was designed around a reliable link Internet Protocols do not know how to deal with link degradation Wireless Technology Evolution The Web CS-CDMA CDPD Wireline Voice Mobile Voice Cellular PCS 3G Analog Digital GSM CDMA TDMA Harmonization WCDMA CDMA 2000 TD-SCDMA Wireless Technology Evolution BROADBAND The Web CS-CDMA CDPD Wireline Voice Mobile Voice Cellular PCS 3G Digital GSM CDMA TDMA WCDMA CDMA 2000 TD-SCDMA Analog Wireline Voice Mobile Voice AMPS PCS 3G Mobile Data AMPS PCS 3G Mobile Wireless Data IP over Voice is inefficient approach to Data Mobility Wireline Voice Mobile Voice AMPS PCS 3G Wireline Data (IP) IP over Voice is inefficient approach to Data Mobility Mobile Broadband Mobile Wireless Data flash-OFDMTM Internet Trends: Build a new Web? Wired Performance Envelope Cellular Data Performance Envelope flash-OFDM Performance Envelope Flarion gives you The Web, not just The Cellular Web flash-OFDMTM Technology A Seamless Extension to the Internet

    Slide 13:Circuit switched systems create fat pipes (physical layer) Packet data systems create fat pipes (physical layer) share pipe efficiently between users (MAC layer) create reliable links for data (link layer) send packet data over links (higher layers)

    flash-OFDM Advantage

    Slide 14:High-speed downlink and uplink based on OFDM orthogonal (no in cell interference) no equalization for multipath delay-spread Fast hopped --- spread spectrum

    Fat pipe flash-OFDM Physical Layer Advantage

    Slide 15:OFDM granular resource partition No overhead control messaging Data as frames

    flash-OFDM MAC/Link Layer Advantage

    Slide 16:Fast ARQ and retransmission over airlink less than 5 msec ARQ loop time with 20 msec delay transmit a data frame up to 5 times higher spectral efficiency Uplink transmission requests no contention based access uplink/downlink data frames scheduled by RadioRouter Large number of active users

    Interactive data QOS over airlink flash-OFDM MAC/Link Layer Advantage

    Slide 17:Reliable link far fewer end-to-end retransmissions Low delay efficient transport layer (TCP/IP) higher burst rates meaningful interactive applications supported (VOIP) No soft-handoff and true make-before-break handoff IP to the RadioRouter reliable seamless handoffs

    Better user experience flash-OFDM Higher Layer Advantage

    Slide 18:Transmit antenna and multi-user diversity Autonomous RadioRouters no common timing reference (no GPS) no need for frequency or code planning no knowledge of neighboring RadioRouters Scalable, flexible architecture Lower cost: system planning system deployment maintenance

    flash-OFDM System Advantage Highest bits/Hz/$

    RadioRouters Router Managed IP Domain Public Internet FA PSTN/Cellular QoS Assured (Provisioning) QoS Assured (Provisioning) Best Effort (Variable Voice Quality) VoIP Services Supported Efficient Low latency air link Simple Voice treated as data Standard Wireline IP Header Compression IETF ROHC not required Flarion RadioRouterTM Router Managed IP Domain Public Internet Border Gateways / Firewall Mobility Management Mobile IP Router Private IP Domain Public Internet Border Gateway(s) FA COA1 Remote Web IPx->COA1 Mobile IP Registration Flarion RadioRouterTM Router Private IP Domain Public Internet Border Gateway(s) FA COA1 Remote Web FA COA2 IPx->COA1 Mobile IP Handoff Flarion RadioRouterTM Router Private IP Domain Public Internet Border Gateway(s) FA COA1 Remote Web FA COA2 IPx->COA1 Mobile IP Handoff Flarion RadioRouterTM New RR Old RR Enhanced Mobile IP Handoff Reactive Make Before Break

    Slide 25:3G systems primarily designed and optimized at the physical layer higher layers are designed on top IP unfriendly expensive network infrastructure flash-OFDM systems joint design across all layers optimized for IP data at all layers low delay - interactive scalable architecture simplified IP network seamless extension of the internet

    Summary

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