Subcarrier spacing-based transmission time determination

1 . A User Equipment (UE), comprising:

a receiver configured to receive control information; and

a transmitter configured to transmit, based on the control information, a signal on an uplink shared channel using a time offset of a plurality of time offsets,

wherein the time offset offsets a start time of a transmission of the signal relative to a symbol start time, and the time offset is based on a subcarrier spacing (SCS) of one or more subcarriers of the signal, wherein the symbol start time is one of a plurality of symbol start times, and each symbol start time of the plurality of symbol start times belongs to one of a plurality of time units, and a number of the plurality of time units is not based on the SCS of the one or more subcarriers of the signal.

2 . The UE according to claim 1 , wherein a plurality of SCSs respectively correspond to the plurality of time offsets, two SCSs of the plurality of SCSs are different, the SCS of the one or more subcarriers of the signal is one of the plurality of SCSs, and the plurality of SCSs include an SCS of 15 kHz, an SCS of 30 kHz or an SCS of 60 KHz.

3 . The UE according to claim 1 , wherein the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal.

4 . The UE according to claim 1 , wherein the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal, the plurality of symbol start times are divided into a plurality of subsets, any symbol start time of the plurality of symbol start times belongs to one of the plurality of subsets, and two symbol start times respectively belong to two of the plurality of subsets.

5 . The UE according to claim 1 , wherein the UE is configured to:

perform an access detection in a first frequency sub-band for determining that the signal is to be transmitted in a time window in the first frequency sub-band, wherein performing the access detection includes performing a plurality of energy detections in a plurality of time sub-pools, respectively, in the first frequency sub-band to obtain a plurality of detection values.

6 . The UE according to claim 1 , wherein:

the receiver is configured to receive the control information on a PDCCH, and

the uplink shared channel is a PUSCH.

7 . A base station, comprising:

a transmitter configured to transmit control information; and

a receiver configured to receive a signal that is transmitted on an uplink shared channel using a time offset of a plurality of time offsets, wherein the time offset offsets a start time of a transmission of the signal relative to a symbol start time, and the time offset is based on a subcarrier spacing (SCS) of one or more subcarriers of the signal, wherein the symbol start time is one of a plurality of symbol start times, and each symbol start time of the plurality of symbol start times belongs to one of a plurality of time units, and a number of the plurality of time units is not based on the SCS of the one or more subcarriers of the signal.

8 . The base station according to claim 7 , wherein a plurality of SCSs respectively correspond to the plurality of time offsets, two SCSs of the plurality of SCSs are different, the SCS of the one or more subcarriers of the signal is one of the plurality of SCSs, and the plurality of SCSs include an SCS of 15 kHz, an SCS of 30 kHz or an SCS of 60 KHz.

9 . The base station according to claim 7 , wherein the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal.

10 . The base station according to claim 7 , wherein the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal, the plurality of symbol start times are divided into a plurality of subsets, any symbol start time of the plurality of symbol start times belongs to one of the plurality of subsets, and two symbol start times respectively belong to two of the plurality of subsets.

11 . The base station according to claim 7 , wherein an access detection is performed in a first frequency sub-band for determining that the signal is to be transmitted in a first time window in the first frequency sub-band, wherein performing the access detection includes performing a plurality of energy detections in a plurality of time sub-pools, respectively, in the first frequency sub-band to obtain a plurality of detection values.

12 . The base station according to claim 7 , wherein:

the transmitter is configured to transmit the control information on a PDCCH, and the uplink shared channel is a PUSCH.

13 . A method, comprising:

receiving control information; and

transmitting, based on the control information, a signal on an uplink shared channel using a time offset of a plurality of time offsets,

wherein the time offset offsets a start time of a transmission of the signal relative to a symbol start time, and the time offset is based on a subcarrier spacing (SCS) of one or more subcarriers of the signal, wherein the symbol start time is one of a plurality of symbol start times, and each symbol start time of the plurality of symbol start times belongs to one of a plurality of time units, and a number of the plurality of time units is not based on the SCS of the one or more subcarriers of the signal.

14 . The method according to claim 13 , wherein a plurality of SCSs respectively correspond to the plurality of time offsets, two SCSs of the plurality of SCSs are different, the SCS of the one or more subcarriers of the signal is one of the plurality of SCSs, and the plurality of SCSs include an SCS of 15 kHz, an SCS of 30 kHz or an SCS of 60 KHz.

15 . The method according to claim 13 , wherein the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal.

16 . The method according to claim 13 , wherein:

the plurality of symbol start times respectively correspond to a plurality of symbols including a symbol carrying the signal, the plurality of symbol start times are divided into a plurality of subsets, any symbol start time of the plurality of symbol start times belongs to one of the plurality of subsets, and two symbol start times respectively belong to two of the plurality of subsets.

17 . The method according to claim 13 , comprising:

performing an access detection in a first frequency sub-band for determining that the signal is to be transmitted in a first time window in the first frequency sub-band, wherein performing the access detection includes performing a plurality of energy detections in a plurality of time sub-pools, respectively, in the first frequency sub-band to obtain a plurality of detection values.

18 . The method according to claim 13 , wherein the control information is transmitted on a PDCCH, and the uplink shared channel is a PUSCH.

19 . A method, comprising:

transmitting control information; and

receiving a signal that is transmitted on an uplink shared channel using a time offset of a plurality of time offsets, wherein the time offset offsets a start time of a transmission of the signal relative to a symbol start time, and the time offset is based on a subcarrier spacing (SCS) of one or more subcarriers of the signal, wherein the symbol start time is one of a plurality of symbol start times, and each symbol start time of the plurality of symbol start times belongs to one of a plurality of time units, and a number of the plurality of time units is not based on the SCS of the one or more subcarriers of the signal.

20 . The method according to claim 19 , wherein the control information is transmitted on a PDCCH, and the uplink shared channel is a PUSCH.