1. DOCUMENT #:GSC15-PLEN-35 FOR:Presentation SOURCE:ARIB AGENDA ITEM:6.6 CONTACT(S):t-yamamoto@bu.jp.nec.com Activities on ITS cooperative systems in Japan Takeshi YAMAMOTO Global Standards Collaboration (GSC) GSC-15

2. Highlight of Current Activities  Feasibility tests Evaluation on propagation characteristics and packet delivery performance on various public road, V2V and V2I integration functionality and Inter-system interference.  Standardization Feasibility test guideline; “ITS Forum RC-006” has been developed in ITS Info-Communications Forum. ARIB standard development has started, based on RC-006 and feedback from feasibility tests.  International Harmonization In ITU-R, Japan proposed to develop a technical report on “advanced ITS radiocommunications ”. In AWF, TG-ITS has been established, based on proposal by Japan. 2

3. Strategic Direction  Contribute to reduction of the number of traffic fatalities and serious injuries by deploying Cooperative Safe Driving Support Systems using Vehicle-to-Vehicle(V2V) and Vehicle-to-Infrastructure(V2I) communications  Effective utilization of radio frequency for ITS in 700MHz band, available from July 2012  Standardization will be based on “Feasibility test guideline” and feedback from the feasibility tests.  Observation: Further feasibility tests will be effective for acceleration of system development and the standardization. 3

4. Challenges  Technical challenges Integration of V2V and V2I communications in a 10MHz channel Inter-system interference Shadowing and Hidden node problem Accuracy of position information Information security  Operational challenges Establishment of a framework of operation and management Management of the reliability and the quality of services 4

5. Next Steps/Actions  Further feasibility tests Security, Inter-operability and other items are supposed to be evaluated.  Standardization in ARIB The new ARIB standard will be based on “ITS Forum RC-006” with feedback from feasibility tests. ARIB STD draft0.1 (2010-06,by ITS Info- communications Forum) ARIB STD-Txxx ver1.0 (2011-06)  International harmonization Activities in ITU-R SG5 WP5A, AWF TG-ITS and GSC ITS TF will be done for international harmonization. 5

6. Supplementary Slides 6

7. Failure to recognize a hazard in time Errors in judgment Errors in operation Collisions with cross traffic at intersections 26% 14% 70% Rear-end collisions Other 9% 32% [ Types of traffic accidents][ Types of human error] Right-turn or left-turn collisions Collisions with pedestrians Safe driving support systems utilize radio systems to effectively supply information on hazards that may not be visible to the driver. 80% of traffic accidents occur at intersections or locations with poor visibility. 70% of traffic accidents are caused by failure to recognize a hazard in time. Effects of Safe Driving Support Systems

8. 108 170 205 222 710 ～ 770MHz 715 725 730 770 170 ～ 222MHz 90 ～ 108MHz 90 Spectrum Use After “Digital Dividend” Broadcasting (multi-media mobile broadcasting etc.) Broadcasting (multi-media mobile broadcasting etc.) Telecommunications (cellular phones etc.) Telecommunications (cellular phones etc.) ITS Self-owned communications (to preserve security and safety) Self-owned communications (to preserve security and safety) 90 ～ 108MHz （ 1 ～ 3ch ） 170 ～ 222MHz （ 4 ～ 12ch ） 470 ～ 770MHz （ 13 ～ 62ch ） Analog TV Analog and Digital TV Digital TV （ 13 ～ 52ch ） After digitization 90 108170222710770 Spectrum Allocation Plan (December, 2007 ） Current Spectrum Allocation Future Spectrum Allocation New Spectrum Use Gardband (-5MHz) 10MHz Available from July, 2012 8

9. Feasibility test guideline for Safe Driving Support Systems in 700MHz Band “ITS FORUM RC-006”  Radio frequency: 720MHz (Single channel)  Type of transmission: Broadcast  MAC: CSMA/CA  Modulation: BPSK OFDM/QPSK OFDM/16QAM OFDM  Number of subcarriers: 52  Maximum transmission power: 10mW/MHz  Occupied bandwidth: Less than 9MHz 9

10. Draft System Architecture PHY MAC Sub Layer LLC Sub Layer IVC-RVC Integrated Access Control IVC-RVC Integrated Access Control Information L7 ： Application Layer PHY_SAP MAC_SAP LLC_SAP IVRI_SAP APP1 PHY Sub-layer Management Entity (PLME) MLME Extension System Management MAC Sub-layer Management Entity (MLME) IVC-RVC Management Entity (IVRLME) APP3APP2 IP extension （ TCP/IP UDP/IP ） PLME _SAP MLME _SAP MLMEX _SAP IVRLME _SAP LLC_SAP SEC _SAP SME _SAP SME _SAP Security Management SEC _SAP SEC _SAP APP4  The red dashed line indicates the scope of the new ARIB standard for advanced ITS radiocommunications in Japan.

11. ITS Radiocommunication Standardization in Japan ISO TC204ITU-R APT ITS National Committee (JSAE) Information and Telecommunications Technology Council (MIC) ARIB (Association of Radio Industries and Businesses) Technical Committee ITS Info-communications Forum ITS Standards (DSRC, V2V, V2I etc.) ITS Standards (DSRC, V2V, V2I etc.) APT: Asia-Pacific Telecommunity MIC: Ministry of Internal Affairs and Communications