Data communications synchronization using GPS receivers

摘要

Disclosed is a system that uses GPS synchronization pulses in a communications system to provide synchronization of the transmission of data during assigned time slots. In addition, mobile units can calculate the distance from a base station based upon GPS coordinates that are provided by the GPS system. The distance of the mobile unit from the base station is then used to calculate the time required to transmit data from the mobile unit to the base station so that data from the mobile unit arrives at the base station during the assigned time slot for that particular mobile unit. Additionally, base station synchronization pulses are transmitted by the base station to the mobile units to empirically synchronize the internal bit clocks of the mobile units to insure proper sampling of data.