Method of monitoring control channel and wireless device using same

摘要

The present invention relates to a method of monitoring a control channel in a wireless communication system and a wireless device using same. The wireless device monitors a first downlink control channel having an uplink grant in a first slot, and a second downlink control channel having a hybrid automatic repeat request (HARQ) positive-acknowledgement (ACK)/negative-acknowledgement (NACK) in a second slot.

主权项

1. A method of monitoring a control channel in a wireless communication system, the method comprising:
monitoring, by a wireless device, a first downlink control channel in a subframe including a first slot and a second slot in time domain; detecting an uplink grant in the first slot; determining, by the wireless device, a search space of the second slot for monitoring a second downlink control channel depending on a resource of the detected uplink grant; and monitoring, by the wireless device, the second downlink control channel including a hybrid automatic repeat request (HARQ) positive-acknowledgement (ACK)/negative-acknowledgement (NACK) on the determined search space of the second slot, wherein the uplink grant is detected in at least one first resource block (RB) of the first slot, wherein the search space is determined in at least one second RB of the second slot, and wherein a number of the at least one first RB is equal to or greater than a number of the at least one second RB.