Method for indicating preemption in communication system

An operation method of a terminal in a communication system, the operation method comprising:

• receiving from a base station information indicating a first resource region to which resources allowed to be preempted for transmission of a first data belong;
• receiving from the base station a preemption resource (PR) indicating a pattern of the resources allowed to be preempted in the first resource region;
• receiving from the base station resource allocation information of a second data;
• when the first resource region overlaps with a second resource region indicated by the resource allocation information, performing a monitoring operation for detecting a preemption indication (PI) indicating whether a resource preempted for transmission of the first data is present in the first resource region;
• and
• when the PI is detected and the PI indicates that the preempted resource is present in the first resource region, performing decoding on the second data obtained through resources other than resources according to the pattern indicated by the PR in the second resource region.

An operation method of a base station in a communication system, the operation method comprising:

• transmitting information indicating a first resource region to which resources allowed to be preempted for transmission of a first data belong;
• transmitting resource allocation information of a second data to a terminal;
• transmitting the second data to the terminal using a second resource region indicated by the resource allocation information,
• when the first resource region overlaps with the second resource region indicated by the resource allocation information and transmission of the first data is required, transmitting the first data using the resources allowed to be preempted in the first resource region;
• and
• transmitting to the terminal a preemption indication (PI) indicating a preempted resource for the transmission of the first data in the first resource region.