Method and apparatus for transmitting modulation and coding scheme MCS indication information and communication device

A method for transmitting-receiving modulation and coding scheme (MCS) indication information, performed by a second communication device, comprising:

• in a case that the second communication device is capable of supporting 1024 quadrature amplitude modulation (QAM), receiving first indication information, second indication information, and third indication information that are transmitted by a first communication device;
• wherein
• the first indication information is used to indicate a modulation and coding scheme (MCS) table used for the second communication device to perform data transmission, and the MCS table comprises an MCS level corresponding to a modulation scheme with a modulation order of 10;
• the second indication information is used to indicate a CQI table used for the second communication device to perform channel quality indicator CQI feedback, and the CQI table comprises a CQI level corresponding to the 1024QAM modulation scheme;
• and
• the third indication information is used for determining, according to the MCS table, an MCS level corresponding to a channel received by the second communication device;
• wherein the MCS table comprises a first MCS level, a second MCS level, a third MCS level, a fourth MCS level, and a fifth MCS level that is for retransmission, wherein the MCS levels correspond to the modulation scheme with a modulation order of 10;
• wherein the target code rate corresponding to the first MCS level, multiplied by 1024, is 805.5, and spectral efficiency corresponding to the first MCS level is 7.8662;
• wherein the target code rate corresponding to the second MCS level, multiplied by 1024, is 853, and spectral efficiency corresponding to the second MCS level is 8.3301;
• wherein the target code rate corresponding to the third MCS level, multiplied by 1024, is 900.5, and spectral efficiency corresponding to the third MCS level is 8.7939;
• and
• wherein the target code rate corresponding to the fourth MCS level, multiplied by 1024, is 948, and spectral efficiency corresponding to the fourth MCS level is 9.2578.

A communication device, comprising a processor, a memory, and a program or instructions stored in the memory and capable of running on the processor, wherein when the program or instructions are executed by the processor, the communication device implements:

• in a case that a second communication device is capable of supporting 1024 quadrature amplitude modulation (QAM), transmitting first indication information, second indication information, and third indication information to the second communication device;
• wherein
• the first indication information is used to indicate a modulation and coding scheme (MCS) table used for the second communication device to perform data transmission, and the MCS table comprises an MCS level corresponding to a modulation scheme with a modulation order of 10;
• the second indication information is used to indicate a channel quality indicator (CQI) table used for the second communication device to perform CQI feedback, and the CQI table comprises a CQI level corresponding to the 1024QAM modulation scheme;
• and
• the third indication information is used for determining, according to the MCS table, an MCS level corresponding to a channel received by the second communication device;
• wherein the MCS table comprises a first MCS level, a second MCS level, a third MCS level, a fourth MCS level, and a fifth MCS level that is for retransmission, wherein the MCS levels correspond to the modulation scheme with a modulation order of 10;
• wherein a target code rate corresponding to the first MCS level is 805.5, and spectral efficiency corresponding to the first MCS level is 7.8662;
• wherein a target code rate corresponding to the second MCS level is 853, and spectral efficiency corresponding to the second MCS level is 8.3301;
• wherein a target code rate corresponding to the third MCS level is 900.5, and spectral efficiency corresponding to the third MCS level is 8.7939;
• and wherein a target code rate corresponding to the fourth MCS level is 948, and spectral efficiency corresponding to the fourth MCS level is 9.2578.