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Rajiv Laroia Founder and CTO Flarion Technologies

flash-OFDM™ --- Mobile Wireless Internet Technology. Rajiv Laroia Founder and CTO Flarion Technologies. flash-OFDM Air-Interface Technology Mobile Wireless Internet. Background Comparison with 3G Advantages of flash-OFDM for data Mobility management. A Huge Untapped Market

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Rajiv Laroia Founder and CTO Flarion Technologies

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  1. flash-OFDM™ --- Mobile Wireless Internet Technology Rajiv Laroia Founder and CTO Flarion Technologies

  2. flash-OFDM Air-Interface Technology Mobile Wireless Internet • Background • Comparison with 3G • Advantages of flash-OFDM for data • Mobility management

  3. A Huge Untapped Market The Immediate Opportunity (U.S.) • 100M Internet users • Of whom only 6% have broadband access • 100M cellular users • Of whom only 5% use their cell phonesfor data Sources: Nielsen, Gartner Dataquest The right technology, marketing and partnerships will unlock the vast potential for wireless Internet services

  4. 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?

  5. 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)

  6. 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

  7. Wireless Technology Evolution The Web CDPD CS-CDMA Wireline Voice Mobile Voice Cellular – PCS – 3G Digital Harmonization Analog WCDMA CDMA 2000 TD-SCDMA GSM CDMA TDMA

  8. Wireless Technology Evolution The Web CDPD CS-CDMA Wireline Voice Mobile Voice Cellular – PCS –3G BROADBAND Digital Analog WCDMA CDMA 2000 TD-SCDMA GSM CDMA TDMA

  9. Mobile Wireless Data Mobile Data IP over Voice is inefficient approach to Data Mobility Mobile Voice Wireline Voice AMPS – PCS – 3G AMPS – PCS – 3G

  10. Mobile Wireless Data flash-OFDMTM Mobile Broadband Wireline Data (IP) IP over Voice is inefficient approach to Data Mobility Mobile Voice Wireline Voice AMPS – PCS – 3G

  11. FTP FTP Gaming Gaming Gaming The Wired Experience Fast (e.g., LAN) The Wired Experience V-Conf. V-Conf. V-Conf. FTP Streaming Streaming Peak Data Rate FTP Browsing Browsing Streaming FTP FTP Browsing FTP The Cellular Web Chat/Trading Chat/Trading Streaming Streaming Streaming Circuit Voice Circuit Voice Browsing Browsing Browsing Chat/Trading Streaming Browsing Chat/Trading Chat/Trading Chat/Trading Messaging Messaging VoIP VoIP VoIP Chat/Trading Slow (e.g., dial-up) Messaging Messaging Slow (seconds) Fast (real-time) Response Time (interactivity) = cellular performance = flash-OFDM performance Internet Trends: Build a new Web? Cellular Data Performance Envelope Wired Performance Envelope flash-OFDM Performance Envelope Flarion gives you The Web, not just The Cellular Web

  12. Public Internet Operator’s Dedicated IP Domain RadioRouterTM Base Stations Mobility Management User Terminals Chipsets Flarion RadioRouter™ Networks flash-OFDMTM Technology A Seamless Extension to the Internet

  13. flash-OFDM™ Advantage • 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)

  14. Tones 1/T Time flash-OFDM™ Physical Layer Advantage • 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

  15. data frame Tones 1/T Time flash-OFDM™ MAC/Link Layer Advantage • OFDM granular resource partition • No overhead control messaging • Data as frames

  16. flash-OFDM™ MAC/Link Layer Advantage • 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

  17. flash-OFDM™ Higher Layer Advantage • 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

  18. flash-OFDM™ System Advantage • 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 Highest bits/Hz/$

  19. MS MS Telephone MS MS Media Gateway SIP VoIP Services Supported • Efficient • Low latency air link • Simple • Voice treated as data • Standard Wireline IP Header Compression • IETF ROHC not required Public Internet Best Effort (Variable Voice Quality) Managed IP Domain QoS Assured (Provisioning) Router PSTN/Cellular FA RadioRouters™ QoS Assured (Provisioning)

  20. Back End Systems Mobility Agents Mobility Management – Mobile IP Public Internet Border Gateways / Firewall Managed IP Domain Router Flarion RadioRouterTM

  21. HA Register IPx->COA1 Home=IPx MS Mobile IP Registration Remote Web Public Internet Border Gateway(s) IPx->COA1 Private IP Domain Router Flarion RadioRouterTM FA COA1

  22. HA MS Mobile IP Handoff Remote Web Public Internet Border Gateway(s) IPx->COA1 Private IP Domain Router FA COA1 FA COA2 Flarion RadioRouterTM

  23. IPx->COA2 MS HA Register IPx->COA2 MS Mobile IP Handoff Remote Web Public Internet Border Gateway(s) IPx->COA1 Private IP Domain Router FA COA1 FA COA2 Flarion RadioRouterTM

  24. Binding Update Context Transfer Request Context Transfer Update MN L2 Register MIP Registration + PFANE Enhanced Mobile IP Handoff Reactive Make Before Break New RR Old RR

  25. Summary • 3G systems • primarily designed and optimized at the physical layer • higher layers are designed on top • IP unfriendly • expensive network infrastructure • flash-OFDMsystems • 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

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