Method and apparatus for processing transport block
Provided are a method for processing a transport block of an apparatus in a wireless communication system and an apparatus using the method. The apparatus receives downlink control information (DCI) and performs one of reception and transmission of a plurality of transport blocks within one transmit time interval (TTI) scheduled by the DCI. An MCS independent of each other is applied to each of the plurality of transport blocks, and a CRC for each transport block is added. The DCI includes information indicating MCS applied to each of the plurality of transport blocks and information indicating the amount of resources allocated to each of the plurality of transport blocks. The plurality of transport blocks are received or transmitted from a transport block having the highest required QoS.
1. A method of processing a transport block of a user equipment (UE) in a wireless communication system, the method comprising:
receiving downlink control information (DCI); and
performing one of reception and transmission of a plurality of transport blocks within one transmit time interval (TTI) scheduled by the DCI,
wherein, to each of the plurality of transport blocks, i) an independent modulation and coding scheme (MCS) is applied, and ii) a cyclic redundancy check (CRC) is added for each transport block,
wherein the DCI includes i) information informing of MCS applied to each of the plurality of transport blocks, and ii) a time domain resource assignment (TDRA) field informing of a specific row of a resource allocation table, and
wherein the specific row comprises information indicating a number of symbols allocated to each of the plurality of transport blocks.
2. The method of claim 1 , wherein the DCI comprises a first MCS index for a first transport block having a smallest MCS value among the plurality of transport blocks, and an offset for a second transport block having a next smallest MCS value after the first transport block, and
wherein the offset value is a difference value between a second MCS index for the second transport block and the first MCS index.
3. The method of claim 2 , wherein the DCI includes an offset value for a third transport block having a next smallest MCS value after the second transport block, and
wherein the offset value is a difference value between a third MCS index for the third transport block and the second MCS index.
4. The method of claim 1 , wherein the DCI informs MCS indices for the plurality of transport blocks arranged in ascending order through a smallest MCS index and at least one offset value.
5. The method of claim 1 , wherein the resource allocation table is preconfigured through a higher layer message.
6. The method of claim 1 , wherein the DCI includes a field indicating a number of the plurality of transport blocks.
7. The method of claim 1 , wherein the DCI includes a transport block transmission information (TBTI) field indicating whether to transmit each transport block.
8. The method of claim 7 , wherein the TBTI field comprises a plurality of bits,
wherein a number of the plurality of transport blocks is informed through a number of bits having a specific value among the plurality of bits.
9. The method of claim 1 , further comprising:
receiving a second DCI when the DCI is a first DCI,
wherein only a transport block indicated by a bit having a specific value in a TBTI field included in the second DCI from among the plurality of transport blocks is re-received or re-transmitted.
10. The method of claim 1 , wherein, in performing one of reception and transmission of the plurality of transport blocks, a transport block having a highest required quality of service (QOS) among the plurality of transport blocks is received or transmitted first.
11. The method of claim 1 , wherein at least one of an operation of demodulating after reception of the plurality of transport blocks and an operation of transmitting after modulation of the plurality of transport blocks is performed.
12. A user equipment (UE) operated in a wireless communication system, the UE comprising:
a transceiver;
a processor connected to the transceiver; and
a memory operably coupled to the processor,
wherein the processor is adapted to:
receive downlink control information (DCI), and
perform one of reception and transmission of a plurality of transport blocks within one transmit time interval (TTI) scheduled by the DCI,
wherein, to each of the plurality of transport blocks, i) an independent modulation and coding scheme (MCS) is applied, and ii) a cyclic redundancy check (CRC) is added for each transport block,
wherein the DCI includes i) information informing of MCS applied to each of the plurality of transport blocks, and ii) a time domain resource assignment (TDRA) field informing of a specific row of a resource allocation table, and
wherein the specific row comprises information indicating a number of symbols allocated to each of the plurality of transport blocks.
13. The UE of claim 12 , wherein the DCI comprises a first MCS index for a first transport block having a smallest MCS value among the plurality of transport blocks, and an offset for a second transport block having a next smallest MCS value after the first transport block, and
wherein the offset value is a difference value between a second MCS index for the second transport block and the first MCS index.
14. The UE of claim 13 , wherein the DCI includes an offset value for a third transport block having a next smallest MCS value after the second transport block, and
wherein the offset value is a difference value between a third MCS index for the third transport block and the second MCS index.
15. The UE of claim 12 , wherein the DCI informs MCS indices for the plurality of transport blocks arranged in ascending order through a smallest MCS index and at least one offset value.
16. The UE of claim 12 , wherein the resource allocation table is preconfigured through a higher layer message.
17. The UE of claim 12 , wherein the DCI includes a field indicating a number of the plurality of transport blocks.
18. The UE of claim 12 , wherein the DCI includes a transport block transmission information (TBTI) field indicating whether to transmit each transport block.
19. The UE of claim 18 , wherein the TBTI field comprises a plurality of bits,
wherein a number of the plurality of transport blocks is informed through a number of bits having a specific value among the plurality of bits.
20. A method performed by a base station in a wireless communication system, the method comprising:
transmitting downlink control information (DCI); and
performing one of transmission and reception of a plurality of transport blocks within one transmit time interval (TTI) scheduled by the DCI,
wherein, to each of the plurality of transport blocks, i) an independent modulation and coding scheme (MCS) is applied, and ii) a cyclic redundancy check (CRC) is added for each transport block,
wherein the DCI includes i) information informing of MCS applied to each of the plurality of transport blocks, and ii) a time domain resource assignment (TDRA) field informing of a specific row of a resource allocation table, and
wherein the specific row comprises information indicating a number of symbols allocated to each of the plurality of transport blocks.