1 Experiments using Stratospheric platform July 2002 at Hawaii Pathfinder Plus Wing length 36 3m Wing width 3 4m Propeller 8 DC motors Payload 50kg Mission power 600W AeroVironment developed for NASA Environmental Research Aircraft and Sensor Technology In 1998 The world first unmanned flight at 24 km alti tude with solar power Communications Research Laboratory 2 IMT 2000 Experiments at 20km altitude Evaluations on communications performance access in a long time delay payloads in stratospheric 2 GHz environment 2 GHz User terminal Ground Base station Experiments on Mobile phone DoCoMo FOMA Voice 12kbps Video 64kbps Internet 384kbps Communications Research Laboratory 3 Key Technologies in Broadband Wireless Access Networks Signal Transmission High speed High performance High capacity Smart Antenna Network Architecture Algorithms Interference suppression Digital beam forming IP packet control Wireless QoS Microcell structure Seamless service Access Link Software Radio Base Station Optical Link Propagation Microwave Millimeter wave Wideband Propagation EMC Hazards to Human Microcell Radio on Fiber RF Device High efficiency Power Amplifier Ultra low Temperature Receiver Communications Research Laboratory 4 Three Categories of Future Mobile Communications New Generation Mobile Communications Broadband access High data rate High mobility Several systems coexist Seamless connections to different systems Ad hoc Wireless Bluetooth Ultra Wide Band Information Barrier Free Wireless support for senior and handicapped people Easy access to the Information for social activities Communications Research Laboratory 5 Bluetooth 2 4 GHz unlicensed wireless communications Very short range access 10 100 m WPAN Wireless Personal Area Network Ad hoc communications Network Point to Point Point to Multi point Max slaves Data rate 1 Mbps Cell Master Slave Pico cell Slave Slave Communications Research Laboratory Bluetooth Comparison with other systems 6 Bluetooth HomeRF IEEE802 11b Output power 0 dBm 20 dBm 10mW MHz 10mW MHz Service area 10m 50m 50m 200m 50m 200m 0 3m 5m 1 Mbps 0 8 Mbps 1 6 Mbps 11 Mbps 4Mbps 115kbps 8 128 128 10 2 4 GHz 2 4 GHz 2 4 GHz Optical FHSS FHSS DSSS FHSS Data rate User terminals Frequency Access IrDA http www bluetooth com Communications Research Laboratory 7 Ultra Wide Band UWB Wireless Regulation 2002 2 FCC permits the marketing and operation of UWB t echnology in 3 1GHz 10 6GHz UWB main characteristics Ultra wide band frequency over 1 5 GHz No carrier frequency Ultra high speed pulse nano second order radiations Applications for ultra high speed data transmissions Make AV and USB cables wireless faster than Bluetooth Positioning Communications Research Laboratory 8 Communications Research Laboratory 9 Ultra Wide Band UWB Wireless http wca org Year1999 laine sld001 htm Communications Research Laboratory 10 Three Categories of Future Mobile Communications New Generation Mobile Communications Broadband access High data rate High mobility Several systems coexist Seamless connections to different systems Ad hoc Wireless Bluetooth Ultra Wide Band Information Barrier Free Wireless support for senior and handicapped people Easy access to the Information for social activities Communications Research Laboratory 11 Aging Society in the case of Japan Population Million 65 years old Population 120 35 0 100 30 0 Ratio of over 65 years old Y 17 2 Age 25 0 80 20 0 60 40 Over 65 Years Under 65 Years Ratio of over 65 years 15 0 10 0 20 5 0 0 0 0 1995 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 Year Communications Research Laboratory Mobile Communication System for Aged using Networks Real world 12 Aged Users assistance of recognition actuation and information access Information post Environment monitor Mobile terminal Assistant Vehicle information Computer networks Communications Research Laboratory Example of System connected to Networks 13 No obstacles here get information via internet How can I get to the station Nothing is coming from here Computer Networks Information post and Environment Monitor Camera OK A bicycle is coming Be careful Mobile terminal Get on a bus at two blocks ahead You can walk safety now Don t worry He is looking aside now But no problem I ll avoid the puddle O K I ll wait at the corner till it goes past Assistant mobile vehicle Communications Research Laboratory Assistant Vehicle prototype 14 Information post and Environment Monitor Camera Touch Panel GPS Camera PC Wireless LAN Infrared Supersonic Sensors Battery Communications Research Laboratory Prototype System 15 Monitor and Assistant vehicle Information Monitor Mobile communication PC Monitoring of a road with people bike dog etc Wireless LAN Recognition of objects Recognition of road traffic Vehicles Infrared sensor Ultrasonic sensor Obstacles Communications Research Laboratory Demonstration 16 2002 3 NHK 17 19 Communications Research Laboratory 17 Demonstration Experiments 2002 3 13 NHK News Communications Research Laboratory 18 Support System for Deaf using PDA Evaluation experiments at Museum Location data Information data server Location detection server Infrared Sensor URL access Wireless Wireless LAN Streaming dataLAN URL data Location detection Infrared tag Finger language animation Communications Research Laboratory 19 Conclusion The Technical keywords of the future mobile communications are broadband access to the backbone networks IP based seamless roaming among different systems The Social keywords of the future of mobile communications are Barrier free for aged and handicapped Security for safe social activities Not necessarily broadband networks Communications Research Laboratory