Method and apparatus for traffic transmission in communication system

An operation method of a base station, the operation method comprising:

• transmitting, to a terminal, an addition value KN, information on linear combination coefficient matrices for respective numbers of transport blocks, and configuration information on each linear combination coefficient matrix;
• receiving, from the terminal, messages each including one network coding block among (M+KN) network coding blocks, a control index of one linear combination coefficient matrix, and a preamble;
• generating M transport blocks from the messages by estimating a number of transport blocks and a linear combination coefficient matrix based on the control index;
• and
• generating a source block by concatenating the M transport blocks,
• wherein each of KN and M is a natural number.

A terminal comprising:

• a processor;
• a memory electronically communicating with the processor;
• and
• instructions stored in the memory,
• wherein when executed by the processor, the instructions cause the terminal to:
• receive, from a base station, an addition value KN, information on linear combination coefficient matrices for respective numbers of transport blocks, and configuration information on each linear combination coefficient matrix;
• divide a source block into M transport blocks;
• select one linear combination coefficient matrix among the linear combination coefficient matrices based on M;
• generate (M+KN) network coding blocks by performing network coding on the M transport blocks with the selected one linear combination coefficient matrix;
• and
• transmit, to the base station, messages each including one network coding block among the network coding blocks, a control index of the one linear combination coefficient matrix, and a preamble,
• wherein each of KN and M is a natural number.