Method and apparatus for transceiving data

A station, comprising:

• a circuitry which is configured to:
• determine a bandwidth of a transmission channel to transmit a data unit;
• determine a first number of bits based on the bandwidth, wherein the first number of bits comprises a first set of bits related to a length of the data unit;
• generate a frame comprising a first signal field, a second signal field, a third signal field and a data field in that order;
• and
• cause the station to transmit at least a part of the frame through the transmission channel,
• wherein the data field comprises the data unit, and
• the third signal field comprises the first set of bits.

A communication device for a station, the communication device comprising:

• a circuitry which is configured to:
• determine a bandwidth of a transmission channel to transmit a data unit;
• determine a first number of bits based on the bandwidth, wherein the first number of bits comprises a first set of bits related to a length of the data unit;
• generate a frame comprising a first signal field, a second signal field, a third signal field and a data field in that order;
• and
• cause the station to transmit at least a part of the frame through the transmission channel,
• wherein the data field comprises the data unit, and
• the third signal field comprises the first set of bits.