Method and apparatus for uplink cancellation indication

1. A method, comprising:

receiving an uplink (UL) grant, wherein the UL grant schedules a Physical Uplink Shared Channel (PUSCH), wherein a frequency resource for the PUSCH is allocated within an active UL Bandwidth Part (BWP) of a user equipment (UE), and wherein the frequency resource is allocated using a physical resource block (PRB) index of the active UL BWP;

receiving a UL cancellation indication (CI), wherein the UL CI indicates a UL resource in a reference UL resource, wherein the reference UL resource is allocated within a carrier including at least the active UL BWP, and wherein the reference UL resource is allocated using a common resource block (CRB) index of the carrier;

defining a starting symbol of the reference UL resource;

determining whether the UL resource overlaps with the PUSCH; and

when the determination indicates that the UL resource overlaps with the PUSCH, cancelling the PUSCH, wherein:

the starting symbol is defined as a first symbol after a time duration from an end of the UL CI, and

the time duration is defined based on (i) a first time duration of minimum processing for decoding the UL grant and preparing the PUSCH and (ii) a second time duration configured by a Next-Generation Node B (gNB).

2. The method of claim 1 , wherein the first time duration is determined based on a smallest subcarrier spacing (SCS) of an SCS of a downlink with which a Physical Downlink Control Channel (PDCCH) carrying the UL CI was transmitted and a smallest SCS of configured UL BWPs of the carrier.

3. The method of claim 1 , further comprising determining symbol durations of one or more symbols of the UL resource, wherein the symbol durations are based on a subcarrier spacing (SCS) of a downlink (DL) BWP in which the UL CI was received.

4. A non-transitory computer-readable storage medium of a terminal device storing thereon executable instructions that, as a result of being executed by one or more processors of the terminal device, cause the terminal device to:

receive an uplink (UL) grant, wherein the UL grant schedules a Physical Uplink Shared Channel (PUSCH), wherein a frequency resource for the PUSCH is allocated within an active UL Bandwidth Part (BWP) of the terminal device, and wherein the frequency resource is allocated using a physical resource block (PRB) index of the active UL BWP;

receive a UL cancellation indication (CI), wherein the UL CI indicates a UL resource in a reference UL resource, wherein the reference UL resource is allocated within a carrier including at least the active UL BWP, and wherein the reference UL resource is allocated using a common resource block (CRB) index of the carrier;

define a starting symbol of the reference UL resource;

determine whether the UL resource overlaps with the PUSCH to yield a determination; and

when the determination indicates that the UL resource overlaps with the PUSCH, cancel the PUSCH, wherein:

the starting symbol is defined as a first symbol after a time duration from an end of the UL CI, and

the time duration is defined based on (i) a first time duration of minimum processing for decoding the UL grant and preparing the PUSCH and (ii) a second time duration configured by a Next-Generation Node B (gNB).

5. The non-transitory computer-readable storage medium of claim 4 , wherein the first time duration is determined based on a smallest subcarrier spacing (SCS) of an SCS of a downlink with which a Physical Downlink Control Channel (PDCCH) carrying the UL CI was transmitted and a smallest SCS of configured UL BWPs of the carrier.

6. The non-transitory computer-readable storage medium of claim 4 , wherein the executable instructions, as the result of being executed by the one or more processors of the terminal device, further cause the terminal device to determine symbol durations of one or more symbols of the UL resource, wherein the symbol durations are based on a subcarrier spacing (SCS) of a downlink (DL) BWP in which the UL CI was received.

7. A system, comprising:

one or more processors; and

memory storing thereon instructions that, as a result of being executed by the one or more processors, cause the system to:

receive an uplink (UL) grant, wherein the UL grant schedules a Physical Uplink Shared Channel (PUSCH), wherein a frequency resource for the PUSCH is allocated within an active UL Bandwidth Part (BWP) of the system, and wherein the frequency resource is allocated using a physical resource block (PRB) index of the active UL BWP;

receive a UL cancellation indication (CI), wherein the UL CI indicates a UL resource in a reference UL resource, wherein the reference UL resource is allocated within a carrier including at least the active UL BWP, and wherein the reference UL resource is allocated using a common resource block (CRB) index of the carrier;

define a starting symbol of the reference UL resource;

determine whether the UL resource overlaps with the PUSCH to yield a determination; and

when the determination indicates that the UL resource overlaps with the PUSCH, cancel the PUSCH, wherein:

the starting symbol is defined as a first symbol after a time duration from an end of the UL CI, and

the time duration is defined based on (i) a first time duration of minimum processing for decoding the UL grant and preparing the PUSCH and (ii) a second time duration configured by a Next-Generation Node B (gNB).

8. The system of claim 7 , wherein the instructions, as the result of being executed by the one or more processors, further cause the system to determine symbol durations of one or more symbols of the UL resource, wherein the symbol durations are based on a subcarrier spacing (SCS) of a downlink (DL) BWP in which the UL CI was received.

9. The system of claim 7 , wherein the first time duration is determined based on a smallest subcarrier spacing (SCS) of an SCS of a downlink with which a Physical Downlink Control Channel (PDCCH) carrying the UL CI was transmitted and a smallest SCS of configured UL BWPs of the carrier.