Method and apparatus for transmitting adaptive partial subframe in unlicensed frequency band, method and apparatus for identifying a frame structure, and method and apparatus for transmitting signal

A transmission method for a transmitter, the method comprising:

• performing channel sensing for occupying an unlicensed band;
• after the unlicensed band is determined to be idle as a result of the channel sensing, transmitting first configuration information through a control channel included in a first unit duration and transmitting data through a data channel included in the first unit duration;
• and
• transmitting second configuration information through another control channel included in a next unit duration following the first unit duration and transmitting data through another data channel included in the next unit duration following the first unit duration,
• wherein the first configuration information indicates a number of symbols occupied in the next unit duration following the first unit duration and the second configuration information indicates a number of symbols occupied in a unit duration which follows the next unit duration following the first unit duration.

A reception method performed through an unlicensed band by a receiver, the method comprising:

• receiving a reference signal from a transmitter after the unlicensed band is determined to be idle;
• receiving first configuration information through a control channel included in a first unit duration and receiving data through a data channel included in the first unit duration;
• and
• receiving second configuration information through another control channel included in a next unit duration following the first unit duration and receiving data through another data channel included in the next unit duration following the first unit duration,
• wherein the first configuration information indicates a number of symbols occupied in a next unit duration following the first unit duration and the second configuration information indicates the number of symbols occupied in the next unit duration following the first unit duration.

A reception method performed through an unlicensed band by a receiver, the method comprising:

• receiving a reference signal from a transmitter after the unlicensed band is determined to be idle;
• receiving first configuration information through a control channel included in a first unit duration and receiving data through a data channel included in the first unit duration;
• and
• receiving second configuration information through another control channel included in a next unit duration following the first unit duration and receiving data through another data channel included in the next unit duration following the first unit duration,
• wherein the first configuration information indicates a number of symbols occupied in the next unit duration following the first unit duration and the second configuration information indicates another number of symbols occupied in a unit duration which follows the next unit duration following the first unit duration.