Transmitter device, receiver device, and communication system

A communication system comprising:

• a transmitter device for repeatedly transmitting an identical frame a plurality of times;
• and
• a receiver device receiving the frame transmitted from the transmitter, wherein
• the transmitter device includes a circuitry that transmits the frame, the frame includes marking areas that divide the frame into a plurality of frame segments having different lengths, the marking areas are formed in the frame by parts of the frame and are distinguishable from other parts of the frame, and the marking areas do not change a data content transmitted by the frame, and
• the plurality of transmissions of the identical frame includes transmission of a first frame received by the receiver device and a second frame received by the receiver device after the first frame, and
• the receiver device identifies a plurality of frame segments in each of the first and second frames based on an interval between the marking areas, stores a frame segments in the first frame that is received normally, and combines a frame segment in the second frame that corresponds to a frame segment that has not been received normally in the first frame with the stored frame segment to reconstruct a complete frame identical to the frame transmitted from the transmitter device.