Method and apparatus for determining modulation and coding scheme

A method of determining a modulation and coding scheme, applied to a user equipment (UE), and comprising:

• determining a to-be-requested modulation and coding scheme according to measured downlink channel quality;
• querying a preset channel quality indication (CQI) table according to the to-be-requested modulation and coding scheme to determine a target CQI index;
• and
• when the target CQI index belongs to a CQI compression index representing at least two modulation and coding schemes, transmitting the CQI compression index to a base station with preset CQI compression index indication information, so that the base station configures a modulation and coding scheme for the UE according to the CQI compression index.

An apparatus for determining a modulation and coding scheme, comprising:

• a processor;
• and
• a memory storing instructions for execution by the processor;
• wherein the processor is configured to:
• acquire uplink control information (UCI) transmitted by user equipment (UE), wherein the UCI comprises at least a channel quality indication (CQI) index;
• determine whether the CQI index belongs to a CQI compression index representing at least two modulation and coding schemes;
• when the CQI index belongs to the CQI compression index, determine a modulation and coding scheme represented by the CQI compression index according to preset CQI compression index indication information;
• and
• determine modulation and coding configuration information for the UE according to the modulation and coding scheme, and transmit the modulation and coding configuration information to the UE;
• wherein the preset CQI compression index indication information comprises:
• a correspondence between the CQI compression index and the at least two modulation and coding schemes, and a CQI compression index representation manner corresponding to each modulation and coding scheme.

An apparatus for determining a modulation and coding scheme, comprising:

• a processor;
• and
• a memory storing instructions for execution by the processor;
• wherein the processor is configured to:
• determine a to-be-requested modulation and coding scheme according to measured downlink channel quality;
• query a preset CQI table according to the to-be-requested modulation and coding scheme to determine a target CQI index;
• and
• when the target CQI index belongs to a CQI compression index representing at least two modulation and coding schemes, transmit the CQI compression index to a base station with preset CQI compression index indication information, so that the base station configures a modulation and coding scheme for the UE according to the CQI compression index.