Patent ID: 8774850

Claim:
A method for transmitting channel quality information from a user equipment (UE) in a communication system to which a Coordinated Multi-Point (CoMP) scheme is applied, the method comprising: receiving signals through an identical band from a serving eNode B (eNB) and one or more neighbor eNBs that are included in a CoMP set and operate in a joint processing mode; generating combined channel quality information of one signal which combines the signals received through the identical band; and transmitting the combined channel quality information to the serving eNB, wherein the combined channel quality information CQI c is determined according to, CQI c = | h 1 + h 2 + … + h n ⁢ | 2 N + ∑ k = 0 ⁢ ⁢ ⁢ k = 1 , 2 , … , n M ⁢ ⁢ I k = | h c ⁢ | 2 N + ∑ k = 0 ⁢ ⁢ ⁢ k = 1 , 2 , … , n M ⁢ ⁢ I k , where h 1 is a channel between the UE and the serving eNB, h n (n≠1) is a channel between the UE and one of the one or more neighbor eNBs, |h 1 +h 2 + . . . +h n | 2 or |h c | 2 is combined channel information of a combination of channels between the UE and the serving eNB and the one or more neighbor eNBs included in the CoMP set, N is a noise received by the UE, I k is interference between the UE and one of the neighbor eNBs not included in the CoMP set, M is a number of neighbor eNBs not included in the CoMP set.