Opportunities in Wireless Networking Edward Knightly

I. Access of Diverse and Unlicensed Spectrum l Vision: low-cost WiFi-like networking with flexible coverage (small cell to km-scale), capacity, and energy –From Sub-GHz for coverage and penetration –Up to 100 GHz for high capacity short range links

Edward Knightly I. Access of Diverse and Unlicensed Spectrum l Vision: low-cost WiFi-like networking with flexible coverage (small cell to km-scale), capacity, and energy –From Sub-GHz for coverage and penetration –Up to 100 GHz for high capacity short range links l Problem: US spectrum allocated based on 1952 technology –Beach front spectrum for UHF TV –UHF TV used by < 10% of the population –0 MHz left over in key locations –Repurposed spectrum is being auctioned

Edward Knightly I. Access of Diverse and Unlicensed Spectrum Opportunities l New capabilities –Network-scale energy management via dynamic ranging –Hot spot mitigation via footprint flexibility –Mobile architectures for spectrum-aware access l Protocol and network design –Interference: the down-side of long range –Smart spectrum database l Demonstrate value of diverse unlicensed spectrum –New services and application scenarios –System-scale design w/o limits of standards –Proof of concept systems and trials (where?) –Impact spectrum policy (e.g., 100 MHz in UHF U.S. wide)

Edward Knightly II. Robust and Secure Wireless l “Problem” - 1 Gb/sec wireless LANs (yawn) –The peak throughput race has been won l Fragile to topology and channel heterogeneity l Poor scaling to dense user population l Eavesdroppers, impersonators, and other attackers increasingly critical (e.g., health applications) l Goal: use the vast resources (antennas, spectrum, protocols, fiber backhaul, …) for designs focusing on –User scaling –Robust to operating eco-system –Multiple layers of security –Maximize peak PHY coding and modulation rate