Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2011-07-19
2011-07-19
Jeanglaud, Gertrude Arthur (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S036000, C701S066000, C340S426160
Reexamination Certificate
active
07983841
ABSTRACT:
A system and method of vehicular wireless communication over a Dedicated Short Range Communication service band is provided. The system includes a vehicle having a navigation means, a processor, and a communication means for transmitting a message via a wireless communications link. The system includes a control channel for communicating a safety message and a service channel for communicating a non-safety message. The control channel is subdivided into a contention-free period having a safety exchange interval and a contention period having a non-safety service interval. The system further includes a dedicated group manager that partitions the vehicles into groups. The method includes the steps of determining if the vehicle is within communications range of the region, determining if the vehicle is registered with the group manager, if the vehicle is within the communications range of the group manager, determining if a current time is within the safety exchange interval, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle. The method further includes the steps of determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete, and determining if a current time is within a contention period, and transmitting the non-safety communication if the current time is within the contention period.
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Laberteaux Kenneth P.
Mak Tony K.
Sengupta Raja
Arthur Jeanglaud Gertrude
Gifford, Kras, Sprinkle, Anderson & Citkowski, P.C.
Toyota Motor Engineering & Manufacturing North America, Inc
University of California - Berkeley
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