Notification method and apparatus for channel quality indicator and modulation and coding scheme

A notification method for a modulation and coding scheme (MCS), the method comprising:

• receiving a first channel quality indicator (CQI) index sent by a terminal device, wherein the first CQI index is determined by the terminal device according to an acquired first CQI table;
• determining a first MCS index according to the first CQI table, a first MCS table, and the first CQI index;
• and
• sending the determined first MCS index to the terminal device;
• wherein the first CQI table comprises:
• (a) multiple entries in which modulation schemes are higher than 64 quadrature amplitude modulation (QAM);
• (b) multiple entries in a second CQI table and in which modulation schemes are quadrature phase shift keying (QPSK), and
• (c) all entries in the second CQI table and in which modulation schemes are 16QAM;
• wherein the second CQI table comprises 6 entries in which the modulation schemes are QPSK, the 6 entries are associated with CQI indices 1-6 respectively, and wherein entries associated with CQI indices 3, 4, 5, and 6 in the second CQI table are entries in which code rates are highest in the 6 entries;
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first CQI table, is neither a combination of the entries corresponding to CQI indices 4, 5, and 6 in the second CQI table, nor a combination of the entries corresponding to CQI indices 3, 4, 5 and 6 in the second CQI table;
• wherein a spectrum efficiency in an entry that is associated with a minimum CQI index and of the entries in which the modulation schemes are higher than 64QAM in the first CQI table, is equal to a spectrum efficiency in an entry that is associated with a maximum CQI index and of all entries in which modulation schemes are 64QAM in the second CQI table;
• wherein modulation schemes in the second CQI table comprise only QPSK, 16QAM, and 64QAM, and a value range of a CQI index in the first CQI table is the same as a value range of a CQI index in the second CQI table;
• and
• wherein the first MCS table comprises:
• (i) multiple entries in which modulation schemes are higher than 64QAM;
• (ii) multiple entries in a second MCS table and in which a modulation schemes are QPSK, and
• (iii) multiple entries in the second MCS table and in which a modulation scheme is 16QAM;
• wherein the second MCS table comprises 10 entries in which the modulation schemes are QPSK, the 10 entries are associated with MCS indices 0-9 respectively, and wherein entries associated with MCS indices 4, 5, 6, 7, 8 and 9 in the second MCS table are entries in which code rates are highest in the 10 entries;
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first MCS table, is not a combination of the entries associated with MCS indices 5, 6, 7, 8 and 9 in the second MCS table;
• wherein a transport block size (TBS) index in an entry that is associated with a minimum MCS index and of all entries in which modulation schemes are higher than 64QAM in the first MCS table, is the same as a TBS index in an entry with a maximum MCS index of all the entries in which the modulation schemes are 64QAM in the second MCS table;
• wherein the entry in the first MCS table refers to one modulation scheme and one TBS index that associated with each MCS index in the first MCS table, and the entry in the second MCS table refers to one modulation scheme and one TBS index that are associated with each MCS index in the second MCS table.

A notification apparatus for a channel quality indicator (CQI), the apparatus comprising:

• a memory configured to store processor-executable instructions;
• a processor coupled to the memory and to a transmitter, the processor executing the processor-executable instructions to acquire a first CQI table, and acquire a first CQI index according to the first CQI table;
• and
• the transmitter, configured to cooperate with the processor to send the first CQI index acquired by the processor to a base station;
• wherein the first CQI table comprises:
• (a) multiple entries in which modulation schemes are higher than 64 quadrature amplitude modulation (QAM);
• (b) multiple entries in a second CQI table and in which modulation schemes are quadrature phase shift keying (QPSK);
• and
• (c) all entries in the second CQI table and in which modulation schemes are 16QAM;
• wherein the second CQI table comprises 6 entries in which the modulation schemes are QPSK, the 6 entries are associated with CQI indices 1-6 respectively, and wherein entries associated with CQI indices 3, 4, 5, and 6 in the second CQI table are entries in which code rates are highest in the 6 entries;
• and
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first CQI table, is neither a combination of the entries associated with CQI indices 4, 5, and 6 in the second table, nor a combination of the entries associated with CQI indices 3, 4, 5 and 6 in the second CQI table;
• wherein a spectrum efficiency in an entry that is associated with a minimum CQI index and of the entries in which the modulation schemes are higher than 64QAM in the first CQI table, is equal to a spectrum efficiency in an entry that is associated with a maximum CQI index and of all entries in which modulation schemes are 64QAM in the second CQI table;
• wherein modulation schemes in entries in the second CQI table comprise only QPSK, 16QAM, and 64QAM, and a value range of a CQI index in the first CQI table is the same as a value range of a CQI index in the second CQI table.

A notification apparatus for a modulation and coding scheme (MCS), the apparatus comprising:

• a memory configured to store processor-executable instructions;
• a receiver, configured to cooperate with a processor to receive a first channel quality indicator (CQI) index sent by a terminal device, wherein the first CQI index is determined by the terminal device according to the first CQI table;
• the processor, coupled to the memory and to the receiver and a transmitter, the processor executing the processor-executable instructions to determine a first MCS index according to the first CQI table, a first MCS table, and the first CQI index;
• and
• the transmitter, configured to cooperate with the processor to send the first MCS index to the terminal device;
• wherein the first CQI table comprises:
• (a) multiple entries in which modulation schemes are higher than 64 quadrature amplitude modulation (QAM),
• (b) multiple entries in a second CQI table and in which a modulation schemes are quadrature phase shift keying (QPSK), and
• (c) all entries in the second MCS table and in which modulation schemes are 16QAM;
• wherein the second CQI table comprises 6 entries in which the modulation schemes are QPSK, the 6 entries are associated with CQI indices 1-6 respectively, and wherein entries associated with CQI indices 3, 4, 5, and 6 in the second CQI table are entries in which code rates are highest in the 6 entries;
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first table CQI table, is neither a combination of the entries associated with CQI indices 4, 5, and 6 in the second table, nor a combination of the entries associated with CQI indices 3, 4, 5 and 6 in the second CQI table;
• wherein a spectrum efficiency in an entry that is associated with a minimum CQI index and of the entries in which the modulation schemes are higher than 64QAM in the first CQI table, is equal to a spectrum efficiency in an entry that is associated with a maximum CQI index and of all entries in which modulation schemes are 64QAM in the second CQI table;
• wherein modulation schemes in the second CQI table comprise only QPSK, 16QAM, and 64QAM, and a value range of a CQI index in the first CQI table is the same as a value range of a CQI index in the second CQI table;
• and
• wherein the first MCS table comprises:
• (i) multiple entries in which modulation schemes are higher than 64QAM;
• (ii) multiple entries in a second MCS table and in which a modulation schemes are QPSK, and
• (iii) multiple entries in the second MCS table and in which modulation schemes are 16QAM;
• wherein the second MCS table comprises 10 entries in which the modulation schemes are QPSK, the 10 entries associated with MCS indices 0-9 respectively, and wherein entries associated with MCS indices 4, 5, 6, 7, 8 and 9 in the second MCS table are entries in which code rates are highest in the 10 entries;
• wherein, a combination formed by the multiple entries in which modulation schemes are QPSK in the first MCS table, is not combination of the entries associated with MCS indices 5, 6, 7, 8 and 9 in the second MCS table;
• wherein a transport block size (TBS) index in an entry that is associated with a minimum MCS index and of all entries in which modulation schemes are higher than 64QAM in the first MCS table, is the same as a TBS index in an entry with a maximum MCS index of all the entries in which the modulation schemes are 64QAM in the second MCS table;
• wherein the entry in the first MCS table refers to one modulation scheme and one TBS index that are associated with each MCS index in the first MCS table, and the entry in the second MCS table refers to one modulation scheme and one TBS index that are associated with each MCS index in the second MCS table.

A non-transitory computer-readable medium storing program codes executable by a terminal device, wherein when executed, the program codes cause the terminal device to implement operations including:

• acquiring a first channel quality indicator (CQI) index according to an acquired first CQI table;
• and
• sending the first CQI index to a base station;
• wherein the first CQI table comprises:
• (a) multiple entries in which modulation schemes are higher than 64 quadrature amplitude modulation (QAM);
• (b) multiple entries in a second CQI table and in which modulation schemes are quadrature phase shift keying (QPSK);
• and
• (c) all entries in the second CQI table and in which modulation schemes are 16QAM;
• wherein the second CQI table comprises 6 entries in which the modulation schemes are QPSK, the 6 entries are associated with CQI indices 1-6 respectively, and wherein entries associated with CQI indices 3, 4, 5, and 6 in the second CQI table are entries in which code rates are highest in the 6 entries;
• and
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first CQI table, is neither a combination of the entries associated with CQI indices 4, 5 and 6 in the second CQI table, nor a combination of the entries associated with CQI indices 3, 4, 5 and 6 in the second CQI table;
• wherein a spectrum efficiency in an entry that is associated with a minimum CQI index and of the entries in which the modulation schemes are higher than 64QAM in the first CQI table, is equal to a spectrum efficiency in an entry that is associated with a maximum CQI index and of all entries in which modulation schemes are 64QAM in the second CQI table;
• wherein modulation schemes in entries in the second CQI table comprise only QPSK, 16QAM, and 64QAM, and a value range of a CQI index in the first CQI table is the same as a value range of a CQI index in the second CQI table.

A non-transitory computer readable medium storing program codes executable by a base station, wherein when executed, the program codes cause the based station to implement operation including:

• receiving a first channel quality indicator (CQI) index sent by a terminal device, wherein the first CQI index is determined by the terminal device according to an acquired first CQI table;
• determining a first modulation and coding scheme (MCS) index according to the first CQI table, a first MCS table, and the first CQI index;
• and
• sending the determined first MCS index to the terminal device;
• wherein the first CQI table comprises:
• (a) multiple entries in which modulation schemes are higher than 64 quadrature amplitude modulation (QAM);
• (b) multiple entries in a second CQI table and in which modulation schemes are quadrature phase shift keying (QPSK), and
• (c) all entries in the second CQI table and in which modulation schemes are 16QAM;
• wherein the second CQI table comprises 6 entries in which the modulation schemes are QPSK, the 6 entries are associated with CQI indices 1-6 respectively, and wherein entries associated with CQI indices 3, 4, 5, and 6 in the second CQI table are entries in which code rates are highest in the 6 entries;
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first CQI table, is neither a combination of the entries associated with CQI indices 4, 5, and 6 in the second table, nor a combination of the entries associated with CQI indices 3, 4, 5 and 6 in the second CQI table;
• wherein a spectrum efficiency in an entry that is associated with a minimum CQI index and of the entries in which the modulation schemes are higher than 64QAM in the first CQI table, is equal to a spectrum efficiency in an entry that is associated with a maximum CQI index and of all entries in which modulation schemes are 64QAM in the second CQI table;
• wherein modulation schemes in the second CQI table comprise only QPSK, 16QAM, and 64QAM, and a value range of a CQI index in the first CQI table is the same as a value range of a CQI index in the second CQI table;
• and
• wherein the first MCS table comprises:
• (i) multiple entries in which modulation schemes are higher than 64QAM;
• (ii) multiple entries in a second MCS table and in which a modulation schemes are QPSK, and
• (iii) multiple entries in the second MCS table and in which a modulation scheme is 16QAM;
• wherein the second MCS table comprises 10 entries in which the modulation schemes are QPSK, the 10 entries are associated with MCS indices 0-9 respectively, and wherein entries associated with MCS indices 4, 5, 6, 7, 8 and 9 in the second MCS table are entries in which code rates are highest in the 10 entries;
• wherein, a combination formed by the multiple entries in which the modulation schemes are QPSK in the first MCS table, is not a combination of the entries associated with MCS indices 5, 6, 7, 8 and 9 in the second MCS table;
• wherein a transport block size (TBS) index in an entry that is associated with a minimum MCS index and of all entries in which modulation schemes are higher than 64QAM in the first MCS table, is the same as a TBS index in an entry with a maximum MCS index of all the entries in which the modulation schemes are 64QAM in the second MCS table;
• wherein the entry in the first MCS table refers to one modulation scheme and one TBS index that are associated with each MCS index in the first MCS table, and the entry in the second MCS table refers to one modulation scheme and one TBS index that are associated with each MCS index in the second MCS table.