Data communication method and device using multiple MCS in wireless communication system

1. A method, performed by a base station, of transmitting or receiving data, the method comprising:

determining whether to respectively allocate a plurality of transport blocks (TBs) including a first TB and a second TB to different frequency resource regions, based on frequency channel condition including signal to interference plus noise ratio (SINR);

determining, based on a result of the determining, at least one frequency resource region to which the first TB and the second TB are allocated, wherein the first TB is coded with a first modulation and coding scheme (MCS) and the second TB is coded with a second MCS;

transmitting, to a terminal, first downlink control information including an indicator of a transmission mode which indicates whether the first TB and the second TB are allocated to the different frequency resource regions and resource allocation information for the first TB and the second TB; and

transmitting, to the terminal, the first TB and the second TB in a physical downlink shared channel (PDSCH), based on the transmission mode,

wherein, in case that the indicator of the transmission mode indicates a first value;

the resource allocation information includes a first bit field comprising M bits indicating a frequency resource region allocated to the first TB and a second bit field comprising M bits indicating a frequency resource region allocated to the second TB,

a frequency resource allocation unit is identified as 2N, and

SINR of the frequency resource region allocated to the first TB is different from SINR of the frequency resource region allocated to the second TB, and

wherein, in case that the indicator of the transmission mode indicates a second value;

the resource allocation information includes a third bit field comprising 2M bits indicating a frequency resource region allocated to the first TB and

the second TB, and the frequency resource allocation unit is identified as N.

2. The method of claim 1 ,

wherein the first downlink control information further includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

3. The method of claim 1 ,

wherein the first value indicates that the plurality of TBs are allocated to the different frequency resource regions, and

wherein the second value indicates that the plurality of TBs are allocated to a same frequency resource region.

4. The method of claim 1 ,

wherein the first downlink control information further includes frequency resource information of second downlink control information, and

wherein the second downlink control information includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

5. The method of claim 1 , further comprising:

determining whether to respectively allocate the plurality of TBs to different layers,

wherein the first downlink control information further includes information of a number of layers.

6. The method of claim 1 ,

wherein the indicator of the transmission mode is determined based on information of a number of the plurality of TBs transmitted in the PDSCH, and

wherein the transmission mode is configured via higher layer signaling.

7. A method, performed by a terminal, of transmitting or receiving data, the method comprising:

receiving, from a base station, first downlink control information, wherein the first downlink control information includes an indicator of a transmission mode which indicates whether a plurality of transport blocks (TBs) including a first TB and a second TB are allocated to different frequency resource regions and resource allocation information for the first TB and the second TB;

identifying, based on the received first downlink control information, whether the first TB and the second TB are respectively allocated to the different frequency resource regions; and

receiving, from the base station, the first TB and the second TB in a physical downlink shared channel (PDSCH), based on a result of the identifying,

wherein, whether to respectively allocate the first TB and the second TB to the different frequency resource regions is determined based on frequency channel condition including signal to interference plus noise ratio (SINR),

wherein the first TB is coded with a first modulation and coding scheme (MCS) and the second TB is coded with a second MCS,

wherein, in case that the indicator of the transmission mode indicates a first value;

the resource allocation information includes a first bit field comprising M bits indicating a frequency resource region allocated to the first TB and a second bit field comprising M bits indicating a frequency resource region allocated to the second TB,

a frequency resource allocation unit is identified as 2N, and

SINR of the frequency resource region allocated to the first TB is different from SINR of the frequency resource region allocated to the second TB, and

wherein, in case that the indicator of the transmission mode indicates a second value;

the resource allocation information includes a third bit field comprising 2M bits indicating a frequency resource region allocated to the first TB and the second TB, and

the frequency resource allocation unit is identified as N.

8. The method of claim 7 ,

wherein the first downlink control information further includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

9. The method of claim 7 ,

wherein the first value indicates that the plurality of TBs are allocated to the different frequency resource regions, and

wherein the second value indicates that the plurality of TBs are allocated to a same frequency resource domain.

10. The method of claim 7 ,

wherein the first downlink control information further includes frequency resource information of second downlink control information, and

wherein the second downlink control information includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

11. The method of claim 7 , further comprising:

identifying whether the plurality of TBs are respectively allocated to different layers,

wherein the first downlink control information further includes information of a number of layers.

12. A base station for transmitting or receiving data, the base station comprising:

a transceiver; and

at least one processor coupled with the transceiver and configured to:

determine whether to respectively allocate a plurality of transport blocks (TBs) including a first TB and a second TB to different frequency resource regions, based on frequency channel condition including signal to interference plus noise ratio (SINR),

determine, based on a result of the determining, at least one frequency resource region to which the first TB and the second TB are allocated, wherein the first TB is coded with a first modulation and coding scheme (MCS) and the second TB is coded with a second MCS,

transmit, to a terminal, first downlink control information including an indicator of a transmission mode which indicates whether the first TB and the second TB are allocated to the different frequency resource regions and resource allocation information for the first TB and the second TB, and

transmit, to the terminal, the first TB and the second TB in a physical downlink shared channel (PDSCH), based on the transmission mode,

wherein, in case that the indicator of the transmission mode indicates a first value;

the resource allocation information includes a first bit field comprising M bits indicating a frequency resource region allocated to the first TB and a second bit field comprising M bits indicating a frequency resource region allocated to the second TB,

a frequency resource allocation unit is identified as 2N, and

SINR of the frequency resource region allocated to the first TB is different from SINR of the frequency resource region allocated to the second TB, and

wherein, in case that the indicator of the transmission mode indicates a second value;

the resource allocation information includes a third bit field comprising 2M bits indicating a frequency resource region allocated to the first TB and the second TB, and

the frequency resource allocation unit is identified as N.

13. The base station of claim 12 ,

wherein the first downlink control information further includes frequency resource information of second downlink control information, and

wherein the second downlink control information includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

14. The base station of claim 12 ,

wherein the at least one processor is further configured to determine whether to respectively allocate the plurality of TBs to different layers, and

wherein the first downlink control information further includes information of a number of layers.

15. A terminal for transmitting or receiving data, the terminal comprising:

a transceiver; and

at least one processor coupled with the transceiver and configured to:

receive, from a base station, first downlink control information, wherein the first downlink control information includes an indicator of a transmission mode which indicates whether a plurality of transport blocks (TBs) including a first TB and a second TB are allocated to different frequency resource regions and resource allocation information for the first TB and the second TB,

identify, based on the received first downlink control information, whether the first TB and the second TB are respectively allocated to the different frequency resource regions, and

receive, from the base station, the first TB and the second TB in a physical downlink shared channel (PDSCH), based on a result of the identifying,

wherein, whether to respectively allocate the first TB and the second TB to the different frequency resource regions is determined based on frequency channel condition including signal to interference plus noise ratio (SINR),

wherein the first TB is coded with a first modulation and coding scheme (MCS) and the second TB is coded with a second MCS,

wherein, in case that the indicator of the transmission mode indicates a first value,

the resource allocation information includes a first bit field comprising M bits indicating a frequency resource region allocated to the first TB and a second bit field comprising M bits indicating a frequency resource region allocated to the second TB, and

a frequency resource allocation unit is identified as 2N, and

SINR of the frequency resource region allocated to the first TB is different from SINR of the frequency resource region allocated to the second TB, and

wherein, in case that the indicator of the transmission mode indicates a second value,

the resource allocation information includes a third bit field comprising 2M bits indicating a frequency resource region allocated to the first TB and the second TB, and

the frequency resource allocation unit is identified as N.

16. The terminal of claim 15 ,

wherein the first downlink control information further includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

17. The terminal of claim 15 ,

wherein the first value indicates that the plurality of TBs are allocated to the different frequency resource regions, and

wherein the second value indicates that the plurality of TBs are allocated to a same frequency resource domain.

18. The terminal of claim 15 ,

wherein the first downlink control information further includes frequency resource information of second downlink control information, and

wherein the second downlink control information includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.

19. The terminal of claim 15 , wherein the at least one processor is further configured to:

identify whether the plurality of TBs are respectively allocated to different layers,

wherein the first downlink control information further includes information of a number of layers.

20. The base station of claim 12 ,

wherein the first downlink control information further includes at least one of information indicating the first MCS for the first TB, information indicating the second MCS for the second TB, a hybrid automatic repeat request (HARQ) process number, a new data indicator, and information of redundancy version.