IEEE Publishes the 802.11p Amendment to Extend the Base IEEE 802.11 WLAN Specification for Wireless Access in Vehicular En


PISCATAWAY, N.J.--(BUSINESS WIRE)-- The IEEE today announced that it has published the IEEE 802.11p- 2010, Standard for Information Technology-Telecommunications and Information Exchange between systems-Local and Metropolitan networks-Specific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Wireless Access in Vehicular Environments.

This amendment defines mechanisms that allow IEEE 802.11™ technology to be used in very high speed, rapidly changing, radio environments encountered by cars and trucks on highways. IEEE 802.11p™ defines enhancements to the physical layer to deal with the extreme Doppler shifts and rapidly changing multipath conditions encountered as vehicles are communicating with each other or to the roadside at speeds of up to 200 kph. It also defines the MAC layer changes required to satisfy the needs of entering a new communication zone and being able to quickly establish a link and exchange multiple packets of data within less than 100 ms total elapsed time from entering to exiting that zone. Further MAC changes are designed to support other higher layer protocols that are designed for the vehicular environment, such as the set of IEEE 1609™ standards for Wireless Access in Vehicular Environments

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