A method for multiplexing a data information stream and two types of control information streams in a wireless mobile communication system is described. The method includes mapping first control information in units of resource elements onto a matrix for generating input information mapped to a resource block, and mapping second control information onto the matrix so as to map the second control information to resource elements adjacent in a time axis to resource elements allocated for a reference signal in the resource block. The first control information is mapped downwards starting from the first row so as not to overwrite the resource element allocated for the reference signal.