METHOD AND DEVICE FOR WIRELESS COMMUNICATION

1 . A first node for wireless communications, comprising:

a first transmitter, transmitting a first message on sidelink, the first message being used to trigger a first signal; transmitting a second message, the second message comprising first location information, the first location information being based on a measurement performed on the first signal;

a first receiver, monitoring Sidelink Control Information (SCI) during an active time of a sidelink Discontinuous Reception (DRX); and receiving the first signal through sidelink;

wherein the active time of the sidelink DRX comprises a first time resource, and the first time resource depends on a transmission time of the first message.

2 . The first node according to claim 1 , wherein the behavior of monitoring an SCI during an active time of a sidelink DRX comprises detecting a first SCI; wherein the first SCI is used to determine time-domain resources occupied by the first signal.

3 . The first node according to claim 1 , wherein the first message is Media Access Control (MAC) layer control information; a first MAC Protocol Data Unit (PDU) comprises the first message; the first MAC PDU comprises a first MAC sub-header, a first field of the first MAC sub-header comprises N1 bit(s) of a first identity of the first node, and a second field of the first MAC sub-header comprises N2 bit(s) of a second identity; the first identity of the first node and the second identity are respectively link-layer identities, and the first identity of the first node and the second identity respectively comprise N bits, N being greater than N1, N being greater than N2; the second identity is related to a transmitter of the first signal.

4 . The first node according to claim 2 , wherein the first message is MAC-layer control information; a first MAC PDU comprises the first message; the first MAC PDU comprises a first MAC sub-header, a first field of the first MAC sub-header comprises N1 bit(s) of a first identity of the first node, and a second field of the first MAC sub -header comprises N2 bit(s) of a second identity; the first identity of the first node and the second identity are respectively link-layer identities, and the first identity of the first node and the second identity respectively comprise N bits, N being greater than N1, N being greater than N2; the second identity is related to a transmitter of the first signal.

5 . The first node according to claim 1 , wherein the first message is an SCI; the first message comprises N2 bit(s) of a first identity of the first node, and the first message comprises N1 bit(s) of a second identity; the first identity of the first node and the second identity are respectively link-layer identities, and the first identity of the first node and the second identity respectively comprise N bits, N being greater than N1, N being greater than N2; the second identity is related to a transmitter of the first signal.

6 . The first node according to claim 2 , wherein the first message is an SCI; the first message comprises N2 bit(s) of a first identity of the first node, and the first message comprises N1 bit(s) of a second identity; the first identity of the first node and the second identity are respectively link-layer identities, and the first identity of the first node and the second identity respectively comprise N bits, N being greater than N1, N being greater than N2; the second identity is related to a transmitter of the first signal.

7 . The first node according to claim 1 , comprising:

a first receiver, receiving a second signal on sidelink;

the first message is used to trigger the second signal; a reception of the second signal is later than a reception of the first signal; the first location information is based on a measurement performed on the second signal; the first time resource depends on one of a transmission time or a reception time of the second signal.

8 . The first node according to claim 2 , comprising:

a first receiver, receiving a second signal on sidelink;

the first message is used to trigger the second signal; a reception of the second signal is later than a reception of the first signal; the first location information is based on a measurement performed on the second signal; the first time resource depends on one of a transmission time or a reception time of the second signal.

9 . The first node according to claim 3 , comprising:

a first receiver, receiving a second signal on sidelink;

the first message is used to trigger the second signal; a reception of the second signal is later than a reception of the first signal; the first location information is based on a measurement performed on the second signal; the first time resource depends on one of a transmission time or a reception time of the second signal.

10 . The first node according to claim 5 , comprising:

a first receiver, receiving a second signal on sidelink;

the first message is used to trigger the second signal; a reception of the second signal is later than a reception of the first signal; the first location information is based on a measurement performed on the second signal; the first time resource depends on one of a transmission time or a reception time of the second signal.

11 . The first node according to claim 1 , comprising:

the first transmitter, accompanying the first message, transmitting a third signal on sidelink, and the third signal being used to determine a location of the first node; both the third signal and the first signal being physical-layer reference signals.

12 . The first node according to claim 2 , comprising:

the first transmitter, accompanying the first message, transmitting a third signal on sidelink, and the third signal being used to determine a location of the first node; both the third signal and the first signal being physical-layer reference signals.

13 . The first node according to claim 6 , comprising:

the first transmitter, accompanying the first message, transmitting a third signal on sidelink, and the third signal being used to determine a location of the first node; both the third signal and the first signal being physical-layer reference signals.

14 . The first node according to claim 7 , comprising:

the first transmitter, accompanying the first message, transmitting a third signal on sidelink, and the third signal being used to determine a location of the first node; both the third signal and the first signal being physical-layer reference signals.

15 . The first node according to claim 1 , wherein the second message comprises a first timestamp, the first timestamp is referenced to a timing of a third node, i.e., a node other than the first node and a transmitter of the first signal.

16 . The first node according to claim 1 , wherein the first time-frequency resource is unrelated to whether an onduration timer, an inactivity timer and a retransmission timer for the sidelink DRX is running.

17 . The first node according to claim 1 , wherein the first signal is a reference signal dedicated for positioning.

18 . The first node according to claim 2 , wherein the first signal is a reference signal dedicated for positioning.

19 . The first node according to claim 3 , wherein the first signal is a reference signal dedicated for positioning.

20 . A method in a first node for wireless communications, comprising:

transmitting a first message on sidelink, the first message being used to trigger a first signal; transmitting a second message, the second message comprising first location information, the first location information being based on a measurement performed on the first signal; and

monitoring an SCI during an active time of a sidelink DRX; and receiving the first signal through sidelink;

wherein the active time of the sidelink DRX comprises a first time resource, and the first time resource depends on a transmission time of the first message.