User equipment operating method and data communication system operating method for radar and data communication coexistence

A method of operating a user equipment, the method comprising:

• generating time measurement information about a plurality of pilot periods in which a pilot signal is received on a first frequency band, by measuring the pilot signal transmitted from a radar;
• reporting the time measurement information to a base station;
• receiving, from the base station, control information based on the time measurement information;
• identifying, based on the control information, a first data resource included in a data period, which is unused by the radar, between the plurality of pilot periods;
• and
• performing data communication with the base station based on the first data resource,
• wherein the pilot signal is generated based on a radar signal transmitted from the radar and
• wherein the pilot signal comprises at least a time resource and a frequency resource to which the radar signal is allocated.

A method of operating a data communication system comprising a base station and a user equipment for performing data communication with the base station, the method comprising:

• generating, by the base station, first time measurement information about a plurality of first radar periods in which a radar signal is received on a first frequency band, by measuring the radar signal transmitted from a radar;
• identifying, by the base station, based on the first time measurement information, a first data resource included in a first data period, which is unused by the radar, between the plurality of first radar periods;
• and
• transmitting, by the base station, a downlink signal to the user equipment based on the first data resource.