Patent ID: 8019332

Claim:
A method for decoding control information by a User Equipment (UE), the method comprising: receiving a Physical Downlink Control Channel (PDCCH) from a base station at subframe k; and decoding a set of PDCCH candidates within a search space of the PDCCH at the subframe k, wherein each of the set of PDCCH candidates comprises ‘L’ control channel elements (CCEs), wherein the ‘L’ CCEs corresponding to a specific PDCCH candidate among the set of PDCCH candidates of the search space at the subframe k are contiguously located from a position given by using a variable of Y k for the subframe k and a modulo ‘C’ operation, wherein ‘C’ is determined as ‘floor(N/L)’, wherein ‘N’ represents a total number of CCEs in the subframe k, and wherein Y k is defined by: Y k =( A*Y k−1 )mod D, wherein A, and D are predetermined constant values.