COMMUNICATION METHOD AND APPARATUS

This application provides a communication method and apparatus. The method includes: encoding a to-betransmitted first bit sequence to obtain a first matrix, where the first matrix includes a plurality of bit square matrices of a same size, and each bit square matrix includes a plurality of pieces of bit data; performing, based on a first mapping relationship, position transformation in a range of each bit square matrix on the bit data of each bit square matrix in the first matrix, to obtain a second matrix after the position transformation; and performing bit data position transformation among bit square matrices on the second matrix to obtain a third matrix, and modulating a to-be-sent first symbol sequence based on the third matrix. A row transformation mapping relationship in the first mapping relationship indicates a row identifier mapping relationship before and after position transformation of the bit data in the bit square matrix range. The row transformation mapping relationship may be constrained by using a global offset constraint factor and at least two local offset constraint factors. Aburst tolerance capability of information transmission can be improved.