Patent ID: 8942081
Filing Date: 2015-01-27
Classification: H04B,H04L,H04W

Abstract:
1. A method of receiving, by a user equipment, control information from a base station, the method comprising: receiving a second downlink control channel and a demodulation reference signal for the second downlink control channel in a subframe; and decoding the second downlink control channel carrying the control information based on the demodulation reference signal, wherein the subframe includes a plurality of orthogonal frequency division multiple access (OFDM) symbols, among which a predefined number of leading OFDM symbols of the subframe is used as a first control region configured for reception of a first downlink control channel and remaining OFDM symbols other than the predefined number of leading OFDM symbols are used as a data region, and wherein the second downlink control channel is received on a second control region configured in the data region, and wherein the demodulation reference signal is received on the second control region.