Method and device in node for wireless communication

1 . A method in a first-type communication node for wireless communications, comprising:

receiving first information and second information; and

transmitting 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.

2 . The method according to claim 1 , wherein the second information includes one bitmap, each bit in the bitmap represents one of the Y candidate time sub-window(s), each bit “1” in the bitmap indicates that a candidate time sub-window represented by the bit “1” is one of the W candidate time sub-window(s), and each bit “0” in the bitmap indicates that a candidate time sub-window represented by the bit “0” is a candidate time sub-window other than the W candidate time sub-window(s).

3 . The method according to claim 1 , wherein each of the Y candidate time sub-window(s) is one slot, two of the Y candidate time sub-windows have an unequal time length, wherein the Y is greater than 1; the Y candidate time sub-windows occupy partial time-domain resources of a candidate time window among the X candidate time window(s) to which the Y candidate time sub-window(s) is belong.

4 . The method according to claim 1 , further comprising:

receiving third information; and

transmitting a first signaling;

wherein the third information is used for determining the W1 time sub-window(s) out of the W candidate time sub-window(s) and frequency-domain resources occupied by the first radio signal, the first signaling is used for indicating the W1 time sub-window(s) and the frequency-domain resources occupied by the first radio signal, and the first signaling is transmitted via a first air interface.

5 . The method according to claim 4 , wherein the third information is transmitted via an air interface, a time interval from a reception end time of the third information to a transmission start time of the first signaling has a time length not less than a first threshold, wherein the first threshold is related to a subcarrier spacing of a subcarrier occupied by the first radio signal; the third information includes part or all fields in one DCI signaling.

6 . The method according to claim 4 , wherein the third information is transmitted via a second air interface, and the second air interface and the first air interface are a Uu interface and a PC5 interface respectively; the first signaling is transmitted through a PSCCH, the first signaling includes part or all fields in one SCI signaling.

7 . The method according to claim 1 , wherein the first information includes a part of higher layer information and a part of physical layer information; or the first information includes one or more fields in one System Information Block (SIB).

8 . The method according to claim 1 , wherein for a given subcarrier spacing of a subcarrier occupied by the first radio signal, the Y is further related to a length of a Cyclic Prefix (CP) of an OFDM symbol occupied by the first radio signal.

9 . 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.

10 . The first-type communication node according to claim 9 , wherein the second information includes one bitmap, each bit in the bitmap represents one of the Y candidate time sub-window(s), each bit “1” in the bitmap indicates that a candidate time sub-window represented by the bit “1” is one of the W candidate time sub-window(s), and each bit “0” in the bitmap indicates that a candidate time sub-window represented by the bit “0” is a candidate time sub-window other than the W candidate time sub-window(s).

11 . The first-type communication node according to claim 9 , wherein each of the Y candidate time sub-window(s) is one slot, two of the Y candidate time sub-windows have an unequal time length, wherein the Y is greater than 1; the Y candidate time sub-windows occupy partial time-domain resources of a candidate time window among the X candidate time window(s) to which the Y candidate time sub-window(s) is belong.

12 . The first-type communication node according to claim 9 , wherein the first receiver receives third information, and the first transceiver transmits a first signaling; wherein the third information is used for determining the W1 time sub-window(s) out of the W candidate time sub-window(s) and frequency-domain resources occupied by the first radio signal, the first signaling is used for indicating the W1 time sub-window(s) and the frequency-domain resources occupied by the first radio signal, and the first signaling is transmitted via a first air interface.

13 . The first-type communication node according to claim 12 , wherein the third information is transmitted via an air interface, a time interval from a reception end time of the third information to a transmission start time of the first signaling has a time length not less than a first threshold, wherein the first threshold is related to a subcarrier spacing of a subcarrier occupied by the first radio signal; the third information includes part or all fields in one DCI signaling.

14 . The first-type communication node according to claim 12 , wherein the third information is transmitted via a second air interface, and the second air interface and the first air interface are a Uu interface and a PC5 interface respectively; the first signaling is transmitted through a PSCCH, the first signaling includes part or all fields in one SCI signaling.

15 . The first-type communication node according to claim 9 , wherein the first information includes a part of higher layer information and a part of physical layer information; or the first information includes one or more fields in one System Information Block (SIB).

16 . The first-type communication node according to claim 9 , wherein for a given subcarrier spacing of a subcarrier occupied by the first radio signal, the Y is further related to a length of a Cyclic Prefix (CP) of an OFDM symbol occupied by the first radio signal.

17 . 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.

18 . The second-type communication node according to claim 17 , wherein the second information includes one bitmap, each bit in the bitmap represents one of the Y candidate time sub-window(s), each bit “1” in the bitmap indicates that a candidate time sub-window represented by the bit “1” is one of the W candidate time sub-window(s), and each bit “0” in the bitmap indicates that a candidate time sub-window represented by the bit “0” is a candidate time sub-window other than the W candidate time sub-window(s).

19 . The second-type communication node according to claim 17 , wherein each of the Y candidate time sub-window(s) is one slot, two of the Y candidate time sub-windows have an unequal time length, wherein the Y is greater than 1; the Y candidate time sub-windows occupy partial time-domain resources of a candidate time window among the X candidate time window(s) to which the Y candidate time sub-window(s) is belong.

20 . The second-type communication node according to claim 17 , wherein the first transmitter transmits third information; wherein the third information is used for determining the W1 time sub-window(s) out of the W candidate time sub-window(s) and frequency-domain resources occupied by the first radio signal.