Patent ID: 9510219
Filing Date: 2016-11-29
CPC Classification: H04J,H04L,H04W

Claim Text:
1. A method of monitoring an enhanced physical downlink control channel (EPDCCH) in a wireless communication system, the method comprising: receiving, by a wireless device from a base station, a radio resource control (RRC) signal, the RRC signal including first information indicating at least one subframe on which at least one EPDCCH is monitored and second information on a first search space and a second search space; monitoring, by the wireless device, a first EPDCCH in the first search space on the at least one subframe indicated by the first information; and monitoring, by the wireless device, a second EPDCCH in the second search space on the at least one subframe indicated by the first information, wherein the first EPDCCH is set to a local mode and is demodulated by a first demodulation reference signal (DMRS), and wherein the second EPDCCH is set to a distributed mode and is demodulated by a second DMRS.