Data transmission method and apparatus

A data transmission method, comprising:

• receiving, by a base station, N sets of codebook-mapped data sent by user equipment, wherein the N sets of codebook-mapped data are obtained after codebook mapping is performed on each of N sets of encoded data by using a codebook, different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2;
• and
• demodulating and decoding, by the base station, the N sets of codebook-mapped data.

A base station, comprising a receiver and a processor, wherein the receiver is connected to the processor;

• the receiver is configured to receive N sets of codebook-mapped data sent by user equipment, wherein the N sets of codebook-mapped data are obtained after codebook mapping is performed on each of N sets of encoded data by using a codebook, different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2;
• and
• the processor is configured to demodulate and decode the N sets of codebook-mapped data.