Method for transmitting and receiving data channel based on a plurality of physical uplink shared channels in communication system and apparatus for the same
Disclosed are methods and apparatuses for transmitting and receiving data channels in a communication system. An operation method of a terminal in a communication system may comprise receiving, from a base station, resource allocation information of a plurality of physical uplink shared channels (PUSCHs) used for repetitive transmission of a same transport block (TB); identifying a position of each of the plurality of PUSCHs in a time domain based on the resource allocation information; and repeatedly transmitting the same TB to the base station at the position of each of the plurality of PUSCHs. Therefore, performance of the communication system can be improved.
1. An operation method of a terminal in a communication system, the operation method comprising:
receiving, from a base station, downlink control information (DCI) indicating time domain resource allocation information including a start and length indicator value (SLIV) set including N SLIVs, each of the N SLIVs corresponding to each of N physical uplink shared channel (PUSCH) resource regions, and the N being a natural number of 2 or more;
identifying, in a first slot, a first PUSCH resource region among the N PUSCH resource regions based on a first SLIV among the N SLIVs;
identifying, in a second slot which is determined based on a location of the first PUSCH resource region, a second PUSCH resource region among the N PUSCH resource regions based on a second SLIV among the N SLIVs;
transmitting, to the base station, first data in the first PUSCH resource region among the N PUSCH resource regions; and
transmitting, to the base station, second data in the second PUSCH resource region among the N PUSCH resource regions.
2. The operation method of claim 1 , wherein duration of the first PUSCH resource region is determined based on the first SLIV among the N SLIVs, and duration of the second PUSCH resource region is determined based on the second SLIV among the N SLIVs.
3. The operation method of claim 1 , wherein the time domain resource allocation information further includes a slot offset, and the first slot in which the first PUSCH resource region is located is determined based on the slot offset.
4. The operation method of claim 3 , further comprising:
receiving, from the base station, configuration information including the SLIV set and the slot offset.
5. The operation method of claim 1 , wherein the DCI further includes frequency domain resource allocation information, and the N PUSCH resource regions are located in same frequency resources indicated by the frequency domain resource allocation information.
6. The operation method of claim 1 , wherein the time domain resource allocation information further includes a mapping type of each of the N PUSCH resource regions.
7. The operation method of claim 1 , wherein a start symbol of the each of the N PUSCH resource regions is determined based on the each of the N SLIVs, and the start symbol indicates a time offset between a start point of a slot in which the each of the N PUSCH resource regions is located and a start point of the each of the N PUSCH resource regions.
8. The operation method of claim 1 , wherein the first data and the second data are associated with a same transport block (TB).
9. The operation method of claim 1 , wherein the first data and the second data are associated with different TBs.
10. An operation method of a base station in a communication system, the operation method comprising:
generating downlink control information (DCI) indicating time domain resource allocation information which includes a start and length indicator value (SLIV) set including SLIVs, each of the SLIVs corresponding to each of physical uplink shared channel (PUSCH) resource regions including a first PUSCH resource region and a second PUSCH resource region;
transmitting, to a terminal, the DCI;
receiving, from the terminal, first data in the first PUSCH resource region indicated by a first SLIV among the SLIVs in a first slot; and
receiving, from the terminal, second data in the second PUSCH resource region indicated by a second SLIV among the SLIVs in a second slot.
11. The operation method of claim 10 , wherein the time domain resource allocation information further includes a slot offset, and the first slot, in which the first PUSCH resource region is located is indicated, by the slot offset.
12. The operation method of claim 11 , further comprising:
transmitting, to the terminal, configuration information including the SLIV set and the slot offset.
13. The operation method of claim 10 , wherein a number of the PUSCH resource regions is signaled by a number of the SLIVs included in the SLIV set.
14. The operation method of claim 10 , wherein the DCI further includes frequency domain resource allocation information, and the PUSCH resource regions are located in same frequency resources indicated by the frequency domain resource allocation information.
15. The operation method of claim 10 , whether the time domain resource allocation information further includes a mapping type of each of the PUSCH resource regions.
16. The operation method of claim 10 , wherein a start symbol of the each of the PUSCH resource regions is indicated by the each of the SLIVs, and the start symbol indicates a time offset between a start point of a slot in which the each of the PUSCH resource regions is located and a start point of the each of the PUSCH resource regions.
17. The operation method of claim 10 , wherein the first data and the second data are associated with a same transport block (TB).
18. The operation method of claim 10 , wherein the first data and the second data are associated with different TBs.