Full-duplex communication methods and apparatus

A communication apparatus in a vehicle, comprising:

• at least one transmitter antenna configured to transmit signals without performing receiving functions for a full-duplex communication;
• and
• at least one receiver antenna configured to receive signals without performing transmitting functions for the full-duplex communication, wherein any pair of transmitter antenna and receiver antenna among the at least one transmitter antenna and at least one receiver antenna are disposed on the vehicle such that they are placed as far apart as possible from one another along their connecting line with a distance being greater than a pre-determined value representing a width or length of the vehicle;
• and
• at least one processor configured to:
• generate one or more messages to be transmitted via the at least one transmitter antenna, wherein the one or more messages include vehicle condition information, operational information about a driver of the vehicle, or information associated with one or more sensors of the vehicle;
• generate a scrambling sequence based on at least certain coded bits from a payload part of the one or more message, the certain coded bits including at least a plate information of the vehicle;
• and
• scramble a part of the one or more messages with the scrambling sequence to achieve a partial scrambling,
• wherein transmit power of a message of the one or more messages are boosted to a pre-determined value if the message of the one or more messages includes a pre-determined emergency signal indicating emergency breaking, emergency acceleration, or emergency lane changing of the vehicle.