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DSRC Coexistence Date: Authors: November 2013 April 2009

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Presentation on theme: "DSRC Coexistence Date: Authors: November 2013 April 2009"— Presentation transcript:

1 DSRC Coexistence Date: 2013-11-11 Authors: November 2013 April 2009
doc.: IEEE /1327r0 November 2013 DSRC Coexistence Date: Authors: Rich Kennedy, Self Rich Kennedy, Self

2 Abstract IEEE 802.11-based US DSRC technology,
April 2009 doc.: IEEE /1327r0 November 2013 Abstract This presentation describes: IEEE based US DSRC technology, current regulatory requirements for sharing the 5.9 GHz spectrum, and how we propose to move forward with a plan to develop technical means for sharing that would enable regulators to open this spectrum for use by other IEEE technologies. Rich Kennedy, Self Rich Kennedy, Self

3 Agenda DSRC basics FCC Part 15 basics
November 2013 Agenda DSRC basics FCC Part 15 basics Existing sharing mechanisms Sharing with DSRC Project to incorporate sharing in ac Rich Kennedy, Self

4 November 2013 DSRC Basics Dedicated Short Range Communications at 5.9 GHz (US DSRC) is essential for V2V and V2I crash-imminent safety applications, and must be protected from U-NII-3 and U-NII-4 devices. V2V/V2I safety has stringent communications requirements, and future pre-crash and automation requirements may be even more stringent. All current DSRC channels are needed for current and future applications making re-channelization and channel use rule changes moot issues. Thorough testing is needed to determine whether sharing with U-NII devices is possible. Currently in final stages of US DoT NHTSA mandate decision. Rich Kennedy, Self

5 Dedicated Short Range Communications (DSRC)
November 2013 Dedicated Short Range Communications (DSRC) 75 MHz of 5.9 GHz for ITS Key Benefits 802.11p technology similar to a Low latency communication (<< 50 ms) High data transfer rates (3 – 27 Mbps) Line-of-sight, up to 1500 m and 360º Receiver sensitivities < -90 dBm Standards IEEE: p, , – , SAE: J2735, J2945 V2V Basic Safety Message (BSM) Average message size: ~320 to 350 bytes Default maximum transmit rate: 10 Hz More sophisticated protocols in development Default transmit power: 20 dBm Enables multiple V2V Safety Applications

6 V2V Safety Communications – Summary
November 2013 Emergency Electronic Brake Lights (EEBL) V2V Safety Communications – Summary Different manufacturers Communicating on the same channel Exchanging the same BSM information Enables multiple V2V safety applications Forward Collision Warning (FCW) Left Turn Assist (LTA) Intersection Movement Assist (IMA) Blind Spot / Lane Change Warning (BSW / LCW) Do Not Pass Warning (DNPW)

7 DSRC Coexistence Tiger Team
November 2013 DSRC Coexistence Tiger Team What should be the outcome from the group? Set of coexistence requirements for in the 5 GHz band that would allow sharing with ITS safety of life and property communications in the 5.9 GHz band Form a group to provide a formal interface to other organizations in the automotive industry including NHTSA, DOT and other ITS stakeholders Required milestone timeline depends on Progress on the rollout of the standards, technologies and laws by the various ITS stakeholders (e.g. FCC, US DoT, NHTSA, Auto OEMs) Outcome of experiments prior to rulemaking (“proof of concept”) CAMP/DOT testing and validation Rich Kennedy, Self

8 November 2013 Some Part 15 Basics 15.1 “…an intentional, unintentional, or incidental radiator may be operated without an individual license.” 15.5(b) Operation of an intentional, unintentional, or incidental radiator is subject to the conditions that no harmful interference is caused and that interference must be accepted that may be caused by the operation of an authorized radio station, by another intentional or unintentional radiator, by industrial, scientific and medical (ISM) equipment, or by an incidental radi- ator. Rich Kennedy, Self

9 Existing 802.11 Sharing Mechanisms
November 2013 Existing Sharing Mechanisms The success of devices relies on their ability to share with other devices Mechanisms have also been devised for sharing with non devices including Dynamic Frequency Selection (DFS) in the 5 GHz bands Detection and avoidance of interference with radars Required in 5250 to 5350 MHz and 5470 to 5725 MHz bands Geo-location database to protect broadcast equipment in the TV bands To transmit, devices access a database to determine available, unused channels, based on geographic location and time, and the device transmit power Approved for unlicensed operation in TV bands Rich Kennedy, Self

10 Sharing with DSRC Study group will develop a sharing approach
November 2013 Sharing with DSRC Study group will develop a sharing approach based on maximizing spectrum utilization that meets all applicable regulatory requirements has approval of the DSRC stakeholder community and recognizes that primary allocation protection is paramount DSRC stakeholder community will participate Rich Kennedy, Self

11 Project to Develop Sharing in 5.9 GHz
November 2013 Project to Develop Sharing in 5.9 GHz If IEEE WLAN is to utilize the 5.9 GHz band, a suitable sharing mechanism must be added to the standard A Study Group should be formed to develop a PAR and 5 Criteria to start this project Rich Kennedy, Self

12 November 2013 References FCC NPRM 13-22 Harmful Interference to DSRC Systems: 11-13/1309r0 DSRC PER versus RSS Profiles: 11-13/1360r0 Rich Kennedy, Self

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