1. A method for reference signal pattern allocation for an eNodeB in a wireless communication system, the method comprising: allocating a plurality of physical resource blocks (PRBs) to at least one mobile device; and mapping a plurality of reference signal patterns same as a plurality of orthogonal cover code (OCC) reference signal patterns multiplied with the associated demodulation reference signal to the PRBs according to an OCC mapping rule, wherein the OCC reference signal pattern applies length-2 or length-4Walsh code OCC mapping according to antenna port and the direction of length-2 or length-4 Walsh code OCC sequences are mapped forward, reverse and forward on 14 OFDM symbols in time domain and 12 subcarriers in frequency domain.