Method and device in node for wireless communication

A first-type communication node for wireless communications, comprising:

• a first receiver, to receive first information and second information;
• and
• a first transceiver, to transmit a first radio signal in W1 time sub-window(s), the first radio signal is transmitted through sidelink;
• wherein the first information is used for determining X candidate time window(s), any one of the X candidate time window(s) has a time length equal to a first time length, the first time length is fixed, and the X is a positive integer;
• for a subcarrier spacing of a subcarrier occupied by the first radio signal, one of the X candidate time window(s) comprises Y candidate time sub-window(s), and the Y is related to the subcarrier spacing of the subcarrier occupied by the first radio signal;
• the second information is used for indicating W candidate time sub-window(s) out of the Y candidate time sub-window(s), the W is a positive integer, and the Y is a positive integer not less than the W;
• and each of the W1 time sub-window(s) is one of the W candidate time sub-window(s) ;
• a subcarrier spacing of a subcarrier occupied by the first radio signal is equal to 15 kHz to the power of a non-negative integer multiple of 2, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the first radio signal carries both sidelink control information and transport block(s);
• the second information is higher layer information.

A second-type communication node for wireless communications, comprising:

• a first transmitter, to transmit first information and second information;
• wherein the first information is used for determining X candidate time window(s), any one of the X candidate time window(s) has a time length equal to a first time length, the first time length is fixed, and the X is a positive integer;
• a first radio signal is transmitted by a receiver of the first information in W1 time sub-window(s), the first radio signal is transmitted through sidelink;
• for a subcarrier spacing of a subcarrier occupied by the first radio signal, one of the X candidate time window(s) comprises Y candidate time sub-window(s), and the Y is related to the subcarrier spacing of the subcarrier occupied by the first radio signal;
• the second information is used for indicating W candidate time sub-window(s) out of the Y candidate time sub-window(s), the W is a positive integer, and the Y is a positive integer not less than the W;
• and each of the W1 time sub-window(s) is one of the W candidate time sub-window(s);
• a subcarrier spacing of a subcarrier occupied by the first radio signal is equal to 15 kHz to the power of a non-negative integer multiple of 2, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the first radio signal carries both sidelink control information and transport block(s);
• the second information is higher layer information.