Method and apparatus for indicating time domain resource allocation of data transmission in a wireless communication system
A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE being configured with a control resource set (CORESET). The method further includes the UE receiving a Downlink Control Information (DCI) on the CORESET, wherein an index is included in the DCI and the index indicates a time domain resource allocation pattern. The method also includes the UE receiving data in Orthogonal Frequency Division Multiplexing (OFDM) symbols determined according to the time domain resource allocation pattern, wherein a range of the time domain resource allocation pattern starts from the first OFDM symbol of the CORESET or after an offset from the first OFDM symbol of the CORESET, and the range of the time domain resource allocation pattern may end across a slot boundary.
1. A method for a UE (User Equipment), comprising:
the UE is configured with a control resource set (CORESET);
the UE receives a Downlink Control Information (DCI) on the CORESET, wherein an index is included in the DCI and the index indicates a time domain resource allocation pattern having a starting symbol and an ending symbol; and
the UE receives data in Orthogonal Frequency Division Multiplexing (OFDM) symbols determined according to the time domain resource allocation pattern, wherein a range of the time domain resource allocation pattern starts from the first OFDM symbol of the CORESET or after an offset from the first OFDM symbol of the CORESET, and the starting symbol and the ending symbol of the time domain resource allocation pattern are in two different slots.
2. The method of claim 1 , wherein the offset is a number of OFDM symbol(s), wherein the number is derived by the UE according to information received from a network node, configured by the network node, or specified in the standards.
3. The method of claim 1 , wherein the index points to an entry of a UE-specific table which is configured by a network (NW).
4. The method of claim 1 , wherein each entry of the UE-specific table comprises a time domain resource allocation pattern.
5. The method of claim 1 , wherein the time domain resource allocation in each entry of the UE-specific table is contiguous.
6. The method of claim 1 , wherein a slot comprises 14 OFDM symbols.
7. The method of claim 1 , wherein the offset value is a starting OFDM symbol index of the CORESET.
8. The method of claim 1 , wherein if a starting OFDM symbol index of time domain resource allocation pattern of an entry indicated by the index is smaller than the starting OFDM symbol index of the CORESET, the starting OFDM symbol index of time domain resource allocation pattern adds the offset.
9. The method of claim 1 , wherein if a starting OFDM symbol index of time domain resource allocation pattern of an entry indicated by the index is larger than or equal to the starting OFDM symbol index of the CORESET, the starting OFDM symbol index of time domain resource allocation pattern does not add the offset.
10. The method of claim 1 , wherein the offset value is added for mapping time domain resource allocation pattern of each entry of the UE-specific table into starting at the starting OFDM symbol index of the CORESET.
11. A method for a network node, comprising:
the network node configures a UE (User Equipment) with a control resource set (CORESET);
the network node transmits a Downlink Control Information (DCI) on the CORESET to the UE, wherein an index is included in the DCI and the index indicates a time domain resource allocation pattern having a starting symbol and an ending symbol; and
the network node transmits data to the UE in Orthogonal Frequency Division Multiplexing (OFDM) symbols determined according to the time domain resource allocation pattern, wherein a range of the time domain resource allocation pattern starts from the first OFDM symbol of the CORESET or after an offset from the first OFDM symbol of the CORESET and the starting symbol and the ending symbol of the time domain resource allocation pattern are in two different slots.
12. The method of claim 11 , wherein the offset is a number of OFDM symbol(s), wherein the number is determined according to information transmitted by the network node to the UE, configured by the network node, or specified in the standards.
13. The method of claim 11 , wherein the index points to an entry of a UE-specific table which is configured by the network.
14. The method of claim 11 , wherein each entry of the UE-specific table comprises a time domain resource allocation pattern.
15. The method of claim 11 , wherein the time domain resource allocation in each entry of the UE-specific table is contiguous.
16. The method of claim 11 , wherein a slot comprises 14 OFDM symbols.
17. The method of claim 11 , wherein the offset value is a starting OFDM symbol index of the CORESET.
18. The method of claim 11 , wherein if a starting OFDM symbol index of time domain resource allocation pattern of an entry indicated by the index is smaller than the starting OFDM symbol index of the CORESET, the starting OFDM symbol index of time domain resource allocation pattern adds the offset.
19. The method of claim 11 , wherein if a starting OFDM symbol index of time domain resource allocation pattern of an entry indicated by the index is larger than or equal to the starting OFDM symbol index of the CORESET, the starting OFDM symbol index of time domain resource allocation pattern does not add the offset.
20. The method of claim 11 , wherein the offset value is added for mapping time domain resource allocation pattern of each entry of the UE-specific table into starting at the starting OFDM symbol index of the CORESET.