| 1. A method for providing wireless communications between a locomotive control unit (LCU) on board a locomotive and a portable
operator control unit (OCU) for use in controlling operation of the locomotive from an off-board location comprising:
calculating a transmit bit error check value for a wireless message that includes an explicit sequence number assigned to
the message so that the explicit sequence number is implicitly encoded in the transmit bit error check value; and
transmitting an encoded message between the OCU and the LCU with the transmit bit error check value and without the explicit
sequence number effective to reduce a total amount information needed to be transmitted compared to a message including the
explicit sequence number.
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