Patent ID: 8780829

Claim:
A method for receiving CoMP RSs (Cooperative Multi-Point Reference Signals) from CoMP cells at a user equipment (UE) in a multi-cell environment, the method comprising: receiving, from the CoMP cells transmitting a same data jointly, reference signals comprising Common Reference Signals (CRSs) and the CoMP RSs, wherein orthogonal codes are applied to the CoMP RSs for mutual orthogonality among the CoMP RSs; and processing the received CoMP RSs using the orthogonal codes applied by distinguishing the CoMP cells from one another, wherein the orthogonal codes are applied to the CoMP RSs on a slot unit or on a symbol unit, and wherein whether to apply the orthogonal codes on the slot unit or on the symbol unit is determined based on a speed of the UE in the CoMP cells, and wherein positions of the CoMP RSs are fixed among the CoMP cells while positions of the CRSs are variable among the CoMP cells.