Patent ID: 9661621
Date: 2017-05-23
CPC Classifications: H04L,H04W

Claim:
1. A method for obtaining control information of a user equipment (UE) in a wireless communication system, the method comprising: receiving a parameter for determining a type-1 enhanced physical downlink control channel (E-PDCCH) region and resource block (RB) allocation information of a type-2 E-PDCCH region, the type-1 E-PDCCH region and the type-2 E-PDCCH region including E-PDCCH candidates; determining the type-1 E-PDCCH region using the parameter and the type-2 E-PDCCH region using the RB allocation information; and performing blind decoding in the type-1 E-PDCCH region and the type-2 E-PDCCH region to receive a type-1 E-PDCCH and a type-2 E-PDCCH, wherein the type-1 E-PDCCH region includes a plurality of RB aggregations which are not contiguous to each other on a subframe, composed of one or more contiguous RBs, and the type-2 E-PDCCH region includes one or more RB aggregations on the subframe, wherein the parameter includes only one of a number of contiguous RBs contained in each of the RB aggregations of type-1 E-PDCCH regions (M) or a number of RBs contained in each of interleaving areas between two RB aggregations of a type-1 E-PDCCH (K), and wherein if the parameter includes M, K is differently determined according to whether (N−4*M) is divided by 3 without a remainder or not, where N is a number of RBs contained in a downlink bandwidth, and * is a multiplication operator.