Method for transmitting and receiving discovery burst in shared band

A method for a transmission node to transmit a discovery burst in a shared band, the method comprising:

• performing first channel-sensing with respect to the shared band to transmit the discovery burst through a first window of a discovery pattern first duration including the first window to an N-th window, N being a natural number equal to or greater than 2;
• in case that the shared band is determined to be not-occupied based on the first channel-sensing, transmitting the discovery burst through the first window of the discovery pattern first duration;
• performing second channel-sensing with respect to the shared band to transmit the discovery burst through a second window of a discovery pattern second duration including the first window to N-th window;
• in case that the shared band is determined to be not-occupied based on the second channel-sensing, transmitting the discovery burst through the second window of the discovery pattern second duration;
• performing third channel-sensing with respect to the shared band to transmit the discovery burst through a first window of a discovery pattern third duration including the first window to N-th window;
• and
• in case that the shared band is determined to be not-occupied based on the third channel-sensing, transmitting the discovery burst through the first window of the discovery pattern third duration.

A method for a reception node to receive a discovery burst in a shared band, the method comprising:

• receiving configuration information on a variable discovery pattern from a transmission node;
• monitoring a first window of a discovery pattern first duration including the first window to an N-th window to receive the discovery burst during the discovery pattern first duration, N being a natural number equal to or greater than 2;
• monitoring a second window of a discovery pattern second duration including the first window to N-th window to receive the discovery burst during the discovery pattern second duration;
• and
• monitoring a first window of a discovery pattern third duration including the first window to N-th window to receive the discovery burst during the discovery pattern third duration.

A method for a reception node to receive a discovery burst in a shared band, the method comprising:

• receiving configuration information on a variable discovery pattern from a transmission node;
• monitoring a first window of a discovery pattern first duration including the first window to an N-th window to receive the discovery burst during the discovery pattern first duration, N being a natural number equal to or greater than 2;
• and
• monitoring a second window of a discovery pattern second duration including the first window to N-th window to receive the discovery burst during the discovery pattern second duration,
• wherein a half frame indication value obtained from the discovery burst received during the first window of the discovery pattern first duration is different from a half frame indication value obtained from the discovery burst received during the second window of the discovery pattern second duration.

A transmission node transmitting a discovery burst in a shared band, the transmission node comprising:

• a processor;
• and
• a memory storing a program command, the processor executing the program command to cause the transmission node to:
• perform first channel-sensing with respect to the shared band;
• in case that the shared band is determined to be not-occupied based on the first channel-sensing, transmit the discovery burst through a first window of a discovery pattern first duration including the first window to an N-th window, N being a natural number equal to or greater than 2;
• perform second channel-sensing with respect to the shared band;
• and
• in case that the shared band is determined to be not-occupied based on the second channel-sensing, transmit the discovery burst through a second window of a discovery pattern second duration including first window to N-th window,
• wherein the discovery burst is transmitted through different windows in each of the discovery pattern first duration and the discovery pattern second duration.