Patent ID: 9391746
Filing Date: 2016-07-12
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting feedback information for a carrier in a multicarrier system, the method comprising: receiving a carrier management command message via a primary carrier, the carrier management command message including activation information indicating that downlink of a secondary carrier is activated and indicating whether uplink of the secondary carrier is activated; receiving a feedback allocation message including a feedback channel index via the downlink of the secondary carrier regardless of whether the uplink of the secondary carrier is activated; interpreting the feedback channel index as an uplink feedback channel of either the primary carrier or the secondary carrier according to whether the uplink of the secondary carrier is activated; and transmitting the feedback information via the uplink feedback channel of the secondary carrier based on the feedback channel index although the uplink of the primary carrier is activated when the uplink of the secondary carrier is activated; and transmitting the feedback information via the uplink feedback channel of the primary carrier based on the feedback channel index when the uplink of the secondary carrier is deactivated.