Method and device for signal transmission using timing advances

1 . A user equipment (UE) for wireless communications, the UE comprising:

a transceiver; and

a processor, wherein the transceiver and the processor are configured to:

transmit a first information block

associated with first and second Timing Advances (TAs) corresponding to first and second Sounding Reference Signal (SRS) resource sets respectively 2 wherein the first TA is unequal to the second TA, and wherein the first and second SRS resource sets belong to a same cell,

receive a first signaling,

determine, based on the first signaling, first and second Resource Element (RE) sets reserved for first and second sub-signals respectively, wherein the first and second RE sets are associated with first and second SRS resource sets respectively,

determine, based on the first and second TAs, first and second time windows,

determine a third time window comprising an overlap between the first time window and the second time window, and

drop transmission of at least one of a part of the first and second sub-signals located within the third time window.

2 . The UE according to claim 1 , wherein the transceiver and the processor are configured to:

determine, based on the first and second TAs, a first timing difference associated with the first information block.

3 . The UE according to claim 2 , wherein the transceiver and the processor are configured to:

determine, based on the first timing difference, whether a first condition is satisfied, and

as a response to the first condition being satisfied, transmit the first information block.

4 . The UE according to claim 1 , wherein the transceiver and the processor are configured to:

receive first and second reference signals in first and second reference signal resource sets respectively,

determine, based on the first and second reference signal resource sets, first and second downlink timings,

determine a first uplink time based on the first downlink timing and the first TA,

determine a second uplink timing based on the second downlink timing and the second TA, and

determine, based on the first uplink timing and the second uplink timing, a first timing difference associated with the first information block.

5 . The UE according to claim 4 , wherein the transceiver and the processor are configured to:

determine, based on the first timing difference, whether a first condition is satisfied, and

as a response to the first condition being satisfied, transmit the first information block.

6 . The UE according to claim 1 , wherein the transceiver and the processor are configured to:

transmit a first signal, wherein the first signaling comprises scheduling information of the first signal, and wherein the first signal comprises a part of at least one of the first or second sub-signals that does not belong to the third time window.

7 . A base station for wireless communications, the base station comprising:

a transceiver; and

a processor, wherein the transceiver and the processor are configured to:

receive a first information block;

associated with first and second Timing Advances (TAs) corresponding to first and second Sounding Reference Signal (SRS) resource sets respectively, wherein the first TA is unequal to the second TA, and wherein the first and second SRS resource sets belong to a same cell, and

transmit a first signaling, wherein the first signaling is used to determine first and second Resource Element (RE) sets associated with the first and second SRS resource sets, and wherein the first RE set and the second RE set are respectively reserved for a first sub-signal and a second sub-signal,

wherein the first TA and the first RE set are used to determine a first time window, while the second TA and the second RE set are used to determine a second time window, and

wherein the first time window and the second time window are overlapping, a third time window comprising the overlap between the first time window and the second time window, and

wherein a target receiver of the first signaling drops transmitting a part of the first sub-signal that is located within the third time window, or, a target receiver of the first signaling drops transmitting a part of the second sub-signal that is located within the third time window; or, a target receiver of the first signaling drops transmitting a part of the first sub-signal that is located within the third time window and a part of the second sub-signal that is located within the third time window.

8 . The base station according to claim 7 , wherein the transceiver and processor are configured to:

transmit a reference signal in a first reference signal resource set, or

transmit a reference signal in a second reference signal resource set,

wherein first TA and the second TA are used to determine a first timing difference, the first information block being related to the first timing difference, and wherein the first reference signal resource set comprises at least one reference signal resource, and wherein the second reference signal resource set comprises at least one reference signal resource, and wherein the first reference signal resource set is used to determine a first downlink timing, and wherein the second reference signal resource set is used to determine a second downlink timing, and wherein the first downlink timing and the first TA are used to determine a first uplink timing, and wherein the second downlink timing and the second TA are used to determine a second uplink timing, and wherein the first uplink timing and the second uplink timing are used to determine a first timing difference, and wherein the first information block is related to the first timing difference.

9 . The base station according to claim 8 , wherein the first timing difference is used to determine whether a first condition is satisfied, and wherein as a response to the first condition being satisfied, a transmitter of the first information block transmits the first information block.

10 . The base station according to claim 7 , wherein the transceiver and the processor are configured to:

receive a first signal, wherein the first signaling comprises scheduling information of the first signal, the first signal comprising a part of at least one of the first sub-signal or the second sub-signal that does not belong to the third time window.

11 . A method in a user equipment (UE) for wireless communications, the method comprising:

transmitting a first information block;

associated with first and second TAs corresponding to first and second Sounding Reference Signal (SRS) resource sets respectively, wherein the first TA is unequal to the second TA, and wherein the first and second SRS resource sets belong to a same cell;

receiving a first signaling;

determining, based on the first signaling, first and second Resource Element (RE) sets reserved for first and second sub-signals respectively, wherein the first and second RE sets are associated with first and second SRS resource sets respectively;

determining, based on the first and second TAs, first and second time windows;

determining a third time window comprising an overlap between the first time window and the second time window; and

dropping transmission of at least one of a part of the first and second sub-signals located within the third time window.

12 . The method according to claim 11 , further comprising:

determining, based on the first and second TAs, a first timing difference associated with the first information block; and

receiving first and second reference signals in first and second reference signal resource sets respectively;

determining, based on the first and second reference signal resource sets, first and second downlink timings;

determining a first uplink timing based on the first downlink timing and the first TA;

determining a second uplink timing based on the second downlink timing and the second TA; and

determining, based on the first uplink timing and the second uplink timing, a first timing difference associated with the first timing difference.

13 . The method according to claim 12 , further comprising:

determining, based on the first timing difference, whether a first condition is satisfied; and

as a response to the first condition being satisfied, transmitting the first information block.

14 . The method according to claim 11 , further comprising:

transmitting a first signal, wherein the first signaling comprises scheduling information of the first signal, and wherein the first signal comprises a part of at least one of the first or second sub-signals that does not belong to the third time window.