Method and apparatus for performing repetition transmissions in wireless communication systems
A method performed by a UE for repetition transmissions is provided. The method includes receiving DCI scheduling an uplink transmission; identifying a DCI format of the DCI; selecting, from a plurality of sets of preconfigured values, a set of preconfigured values that is mapped to the DCI format; and determining a number of times the uplink transmission is required to be repeated from the selected set of preconfigured values. A UE applying the same method is also provided.
1. A method performed by a User Equipment (UE) for repetition transmissions, the method comprising:
receiving Downlink Control Information (DCI) scheduling an uplink transmission;
identifying a DCI format of the DCI;
selecting, from a plurality of sets of preconfigured values, a set of preconfigured values that is mapped to the DCI format;
determining a number of times the uplink transmission is required to be repeated from the selected set of preconfigured values;
receiving a Radio Resource Control (RRC) configuration indicating a number of sets of preconfigured values in the plurality of sets of preconfigured values; and
determining whether to apply a non-slot-based repetition scheme to perform the uplink transmission according to the DCI format and the RRC configuration,
wherein the non-slot-based repetition scheme allows the UE to perform the uplink transmission and at least one repetition of the uplink transmission in a same slot.
2. The method of claim 1 , wherein determining the number of times the uplink transmission is required to be repeated comprises:
selecting, from the selected set of preconfigured values, a preconfigured value indicated by the DCI; and
determining the number of times the uplink transmission is required to be repeated according to the selected preconfigured value.
3. The method of claim 1 , wherein each of the plurality of sets of preconfigured values is mapped to a respective DCI format.
4. The method of claim 1 ,
wherein the RRC configuration comprises a Bandwidth Part (BWP)-specific configuration that is dedicated to a specific BWP.
5. The method of claim 1 , wherein each of the plurality of sets of preconfigured values is included in a respective Time Domain Resource Allocation (TDRA) list.
6. The method of claim 1 , wherein the uplink transmission comprises a Physical Uplink Shared Channel (PUSCH) transmission.
7. A User Equipment (UE) that performs repetition transmissions, the UE comprising:
one or more non-transitory computer-readable media storing one or more computer-executable instructions; and
at least one processor coupled to the one or more non-transitory computer-readable media, and configured to execute the one or more computer-executable instructions to perform operations comprising:
receiving Downlink Control Information (DCI) scheduling an uplink transmission;
identifying a DCI format of the DCI;
selecting, from a plurality of sets of preconfigured values, a set of preconfigured values that is mapped to the DCI format;
determining a number of times the uplink transmission is required to be repeated from the selected set of preconfigured values;
receiving a Radio Resource Control (RRC) configuration indicating a number of sets of preconfigured values in the plurality of sets of preconfigured values; and
determining whether to apply a non-slot-based repetition scheme to perform the uplink transmission according to the DCI format and the RRC configuration,
wherein the non-slot-based repetition scheme allows the UE to perform the uplink transmission and at least one repetition of the uplink transmission in a same slot.
8. The UE of claim 7 , wherein determining the number of times the uplink transmission is required to be repeated comprises:
selecting, from the selected set of preconfigured values, a preconfigured value indicated by the DCI; and
determining the number of times the uplink transmission is required to be repeated according to the selected preconfigured value.
9. The UE of claim 7 , wherein each of the plurality of sets of preconfigured values is mapped to a respective DCI format.
10. The UE of claim 7 ,
wherein the RRC configuration comprises a Bandwidth Part (BWP)-specific configuration that is dedicated to a specific BWP.
11. The UE of claim 7 , wherein each of the plurality of sets of preconfigured values is included in a respective Time Domain Resource Allocation (TDRA) list.
12. The UE of claim 7 , wherein the uplink transmission comprises a Physical Uplink Shared Channel (PUSCH) transmission.