Device and method for transmitting and receiving control information and data in communication system
The present disclosure relates to a 5 th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4 th generation (4G) communication system such as long-term evolution (LTE). Disclosed is a method performed by a terminal that may comprise: receiving configuration information for a CSI report from a base station; acquiring a channel quality indicator (CQI) table on the basis of the configuration information for the CSI report; and transmitting CSI including a CQI according to the CQI table to the base station, wherein the CQI table is configured on the basis of a first CQI table of a case where transport block error probability is 0.1 and a second CQI table for a case where transport block error probability is 0.00001. The method performed by the terminal may further comprise: receiving configuration information relating to a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH) from the base station; identifying a modulation and coding scheme (MCS) table on the basis of the configuration information relating to the PUSCH or PDSCH; and acquiring a transport block size (TBS) on the basis of the MCS table, wherein the MCS table is configured on the basis of a first MCS table configured by default and a second MCS table configured for low spectral efficiency (SE) in the base station.
1 . A method performed by a base station (BS) in a wireless communication, the method comprising:
identifying a set of entries for modulation and coding scheme (MCS), wherein each of the entries is associated with an index and includes a combination of a modulation order, a target code rate, and a spectral efficiency, for use in a physical downlink shared channel (PDSCH),
determining a modulation order and a coding rate based on the set of entries;
determining a transport block size for the PDSCH, based on the determined modulation order and coding rate;
determining a parity check matrix for low density parity check (LDPC) encoding, based on the determined transport block size;
encoding data based on the determined parity check matrix; and
transmitting at least a part of the encoded data to a user equipment (UE),
wherein, in case that a higher-layer signaling parameter corresponding to the set of entries indicates 1024-quadrature amplitude modulation (QAM), the set of entries includes a maximum modulation order of 10, and comprises entries including modulation order and coding rate combinations of (10, 805.5/1024), (10, 853/1024), (10, 900.5/1024), and (10, 948/1024).
2 . The method of claim 1 , wherein the set of entries including the maximum modulation order of 10 further comprises 23 entries including modulation order and coding rate combinations included in a set of entries including a maximum modulation order of 8.
3 . The method of claim 2 , wherein the set of entries including the maximum modulation order of 8 includes modulation order and coding rate combinations of (2, 120/1024), (2, 193/1024), (2, 308/1024), (2, 449/1024), (2, 602/1024), (4, 378/1024), (4, 434/1024), (4, 490/1024), (4, 553/1024), (4, 616/1024), (4, 658/1024), (6, 466/1024), (6, 517/1024), (6, 567/1024), (6, 616/1024), (6, 666/1024), (6, 719/1024), (6, 772/1024), (6, 822/1024), (6, 873/1024), (8, 682.5/1024), (8, 711/1024), (8, 754/1024), (8, 797/1024), (8, 841/1024), (8, 885/1024), (8, 916.5/1024), and (8, 948/1024).
4 . The method of claim 1 , wherein the combination of the target code rate, and the spectral efficiency of at least one of the entries in the set of entries is omitted.
5 . The method of claim 1 , further comprising:
receiving, from the UE, a channel quality information (CQI), wherein the set of entries are determined based on the CQI.
6 . A base station (BS) in a wireless communication, the BS comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver;
at least one memory, coupled to the at least one processor, storing instructions executable by the at least one processor to cause the BS to:
identify a set of entries for modulation and coding scheme (MCS), wherein each of the entries is associated with an index and includes a combination of a modulation order, a target code rate, and a spectral efficiency, for use in a physical downlink shared channel (PDSCH),
determine a modulation order and a coding rate based on the set of entries;
determine a transport block size for the PDSCH, based on the determined modulation order and coding rate;
determine a parity check matrix for low density parity check (LDPC) encoding, based on the determined transport block size;
encode data based on the determined parity check matrix; and
transmit at least a part of the encoded data to a user equipment (UE),
wherein, in case that a higher-layer signaling parameter corresponding to the set of entries indicates 1024-quadrature amplitude modulation (QAM), the set of entries includes a maximum modulation order of 10, and comprises entries including modulation order and coding rate combinations of (10, 805.5/1024), (10, 853/1024), (10, 900.5/1024), and (10, 948/1024).
7 . The BS of claim 6 , wherein the set of entries including the maximum modulation order of 10 further comprises 23 entries including modulation order and coding rate combinations included in a set of entries including a maximum modulation order of 8.
8 . The BS of claim 7 , wherein the set of entries including the maximum modulation order of 8 includes modulation order and coding rate combinations of: (2, 120/1024), (2, 193/1024), (2, 308/1024), (2, 449/1024), (2,602/1024), (4, 378/1024), (4, 434/1024), (4, 490/1024), (4, 553/1024), (4, 616/1024), (4,658/1024), (6, 466/1024), (6, 517/1024), (6, 567/1024), (6, 616/1024), (6, 666/1024), (6,719/1024), (6, 772/1024), (6, 822/1024), (6, 873/1024), (8, 682.5/1024), (8, 711/1024), (8,754/1024), (8, 797/1024), (8, 841/1024), (8, 885/1024), (8, 916.5/1024), and (8, 948/1024).
9 . The BS of claim 6 , wherein the combination of the target code rate, and the spectral efficiency of at least one of the entries in the set of entries is omitted.
10 . The BS of claim 6 , wherein the instructions further cause the BS to:
receive, from the UE, a channel quality information (CQI), wherein the set of entries are determined based on the CQI.
11 . A method performed by a user equipment (UE) in a wireless communication, the method comprising:
receiving, from a base station (BS), an indication for modulation and coding scheme (MCS);
receiving, from the BS, encoded data via a physical downlink shared channel (PDSCH);
identifying a set of entries for the modulation and coding scheme (MCS) based on the indication, wherein each of the entries is associated with an index and includes a combination of a modulation order, a target code rate, and a spectral efficiency, for use in the PDSCH,
determining a modulation order and a coding rate based on the set of entries;
determining a transport block size for the PDSCH, based on the determined modulation order and coding rate;
determining a parity check matrix for low density parity check (LDPC) encoding, based on the determined transport block size; and
decoding data based on the determined parity check matrix,
wherein, in case that a higher-layer signaling parameter corresponding to the set of entries indicates 1024-quadrature amplitude modulation (QAM), the set of entries includes a maximum modulation order of 10, and comprises entries including modulation order and coding rate combinations of (10, 805.5/1024), (10, 853/1024), (10, 900.5/1024), and (10, 948/1024).
12 . The method of claim 11 , wherein the combination of the target code rate, and the spectral efficiency of at least one of the entries in the set of entries is omitted.
13 . The method of claim 11 , wherein the set of entries including the maximum modulation order of 10 further comprises 23 entries including modulation order and coding rate combinations included in a set of entries including a maximum modulation order of 8.
14 . The method of claim 13 , wherein the set of entries including the maximum modulation order of 8 includes modulation order and coding rate combinations of: (2, 120/1024), (2, 193/1024), (2, 308/1024), (2, 449/1024), (2, 602/1024), (4, 378/1024), (4, 434/1024), (4,490/1024), (4, 553/1024), (4, 616/1024), (4, 658/1024), (6, 466/1024), (6, 517/1024), (6,567/1024), (6, 616/1024), (6, 666/1024), (6, 719/1024), (6, 772/1024), (6, 822/1024), (6,873/1024), (8, 682.5/1024), (8, 711/1024), (8, 754/1024), (8, 797/1024), (8, 841/1024), (8,885/1024), (8, 916.5/1024), and (8, 948/1024).
15 . The method of claim 11 , further comprising: transmitting, to the BS, a channel quality information (CQI).
16 . A user equipment (UE) in a wireless communication, the UE comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver;
at least one memory, coupled to the at least one processor, storing instructions executable by the at least one processor to cause the UE to:
receive, from a base station (BS), an indication for modulation and coding scheme (MCS);
receive, from the BS, encoded data via a physical downlink shared channel (PDSCH);
identify a set of entries for the modulation and coding scheme (MCS) based on the indication, wherein each of the entries is associated with an index and includes a combination of a modulation order, a target code rate, and a spectral efficiency, for use in the PDSCH,
determine a modulation order and a coding rate, based on the set of entries;
determine a transport block size for the PDSCH, based on the determined modulation order and coding rate;
determine a parity check matrix for low density parity check (LDPC) encoding, based on the determined transport block size; and
decode data based on the determined parity check matrix,
wherein, in case that a higher-layer signaling parameter corresponding to the set of entries indicates 1024-quadrature amplitude modulation (QAM), the set of entries includes a maximum modulation order of 10, and comprises entries including modulation order and coding rate combinations of (10, 805.5/1024), (10, 853/1024), (10, 900.5/1024), and (10, 948/1024).
17 . The UE of claim 16 , wherein the combination of the target code rate, and the spectral efficiency of at least one of the entries in the set of entries is omitted.
18 . The UE of claim 16 , wherein the set of entries including the maximum modulation order of 10 further comprises 23 entries including modulation order and coding rate combinations included in a set of entries including a maximum modulation order of 8.
19 . The UE of claim 18 , wherein the set of entries including the maximum modulation order of 8 includes modulation order and coding rate combinations of: (2, 120/1024), (2, 193/1024), (2, 308/1024), (2, 449/1024), (2, 602/1024), (4, 378/1024), (4, 434/1024), (4,490/1024), (4, 553/1024), (4, 616/1024), (4, 658/1024), (6, 466/1024), (6, 517/1024), (6,567/1024), (6, 616/1024), (6, 666/1024), (6, 719/1024), (6, 772/1024), (6, 822/1024), (6,873/1024), (8, 682.5/1024), (8, 711/1024), (8, 754/1024), (8, 797/1024), (8, 841/1024), (8,885/1024), (8, 916.5/1024), and (8, 948/1024).
20 . The UE of claim 16 , wherein the instructions further cause the UE to:
transmit, to the BS, a channel quality information (CQI).