DELIVERY OF PRECISE TIME TO GPS RECEIVERS IN AN ON-BOARD UNIT OVER DEDICATED SHORT RANGE COMMUNICATIONS OR C-V2X AND WAY IN DSRC CONNECTED VEHICLE NETWORK TO ENHANCE OBE GPS PERFORMANCE

摘要

On-board equipment for a motor vehicle includes a DSRC radio receiving a signal from road side equipment. The signal has an accurate frequency in accordance with GPS time. A GPS receiver is communicatively coupled to the DSRC radio. The on-board equipment determines the GPS accurate time and provides the GPS accurate time to the GPS receiver. The determining of the GPS accurate time is dependent upon the accurate frequency in the signal.