Oki Electric Industry Co., Ltd. SSC Wireless Technology R&D Division Kiyohito TOKUDA URL: Integrated Wireless Communications System between Inter-Vehicle and Road to Vehicle

Profile: Kiyohito Tokuda （徳田 清仁） - Born in Ishikawa, Japan on December 13, Received the B.E., M.E. and Dr. of Eng. degrees in electrical engineering from Hosei University in 1981, 1983 and 1996, respectively. - Joined Electronic and Communication Systems Laboratory, Research and Development Group, Oki Electric Industry Co., Ltd. in Since then, I have engaged in research on the mobile data transmission technology and the signal processing technology. - General Manager of Wireless Technology Research & Development Division. - Lecture of Saitama National University & Hosei University in Japan - Current research interests include UWB, W-LAN and ITS. Hello!

・ Introduction - Oki’s Wireless Technology for DSRC Systems - Classification of Telematics Services - RVC & IVC Standard in Japan - Frequency arrangement of DSRC System ・ RVC System for Convenience & Amusement Driving - Protocol Stack of RVC System - RVC Wireless Equipment - IVC System for Comfortable & Safety Driving - IVC Prototype System - On –board Image ・ AVC(Advanced Vehicle Communications) System development - Concept op AVC System - Protocol Stack of AVC System ・ Future Mobile Life Produced by AVC System - Conclusion CONTENTS

Commercial stageR&D stage ◇ VICS(Vehicle Information & Communication System) (2.5GHz) ◇ ETC(Electronic Toll Collection) (5.8GHz) RVC （ Road- Vehicle Communications ） ◇ Information Shower System (5.8GHz) ◇ ROF-RVC System (5.8, 60GHz) IVC （ Inter-Vehicle Communications ） ◇ Instant Multimedia Communicator (5.8GHz) ◇ Advanced Safety Vehicle System (5.8GHz) Oki’s Wireless Technology for DSRC Systems DSRC:Dedicated Short Range Communications

Classification of Telematics Services Cost of Communication Free High Use of Cellular Phone ・ Prevention of theft / Chase stolen vehicle ・ Emergency call ・ Update map information ・ Traffic information ・ Area information Use of DSRC Type IVC ・ Supply of information for driving assistance Use of DSRC Type RVC & W-LAN ・ Supply of information for driving assistance Service Area WideSpot Old Freshness of Information New New Telematics Internet Connection AVC System

RVC & IVC Standard in Japan Road to Vehicle communication ARIB STD-T75 T75 based Inter- Vehicle communication (draft) Frequency band5.8 GHz band # of channel14 ch10 ch Occupied frequency band4.4 MHz Transmit rate1M/4Mbps4Mbps Modulation/Demodulation scheme ASK ／ QPSK QPSK Transmit power 25dBm （ base station ） 10dBm （ mobile station ） 10dBm MACTDMACSMA Service area ～ 30 meters Several hundred meters MobilityTake Shortening Link Establishment Time into Consideration Interference from other systemNo interference （ assign dedicated frequency ） Real-time nature- Connection oriented - Guaranteed Real Time - Connectionless - Guaranteed Real Time System capacity Slot Number Assignment （ Max 8 Slot/1Ch ） （ 120 Vehicles ）

Frequency Arrangement of DSRC System ARIB:Association of Radio Industries and Businesses ETC

Protocol Stack of RVC System Ｔ８ ８ Ｔ７５

RVC Wireless Equipment

Core Device ・ＭＡＣ Module ・ RF Module IVC Prototype System ■ Feature ・ Transmit Multimedia data including Movie, Still picture and Voice to surrounding vehicle at any time, anywhere, anyone. MPEG4 En-cording ・ Quick Access between Vehicles without Base Station ・ Real-time & High quality data transmission performances satisfy the required QoS. Data Transmission Rate : 4Mbps (ARIB STD T75 based)

On-board Image Speaker Inter-Vehicle Communication unit Microphone CCD camera MPEG-4 Decorder MPEG-4 Encorder Antenna Top Front Back Inside Display

Concept of AVC System Needs of driver and fellow passenger are “Comfortable” and “Safety” in addition to “Convenience” and “Amusement.” Improvement in “Safety” is indispensable in order to advance the conventional Telematics services which offers “ Comfortable”, “Convenience” and “Amusement.” To realize both “ Comfortable” and “Safety” requirements, DSRC-IVC system which took QoS into consideration to the maximum extent is effective. “Convenience” and “Amusement” services are also provided by DSRC-RVC systems as well as mobile phone systems. ⇒ AVC (Advanced Vehicle Communications) System integrated with DSRC-IVC and DSRC-RVC systems provides triple mode services(ETC, Information Shower, Safety).

Protocol Stack of AVC System ① Network Applications ② Non-network Applications ③ ETC, Information Shower ④ Inter-Vehicle Communications IVC RVC Cooperation at application level

Future Mobile Life Produced by AVC System

Conclusion AVC system provides triple mode services. (ETC, Information Shower, Safety) AVC prototype system will be developed until the end of financial 2005 year.