Patent ID: 9674838
Date: 2017-06-06
CPC Classifications: H04L,H04W

Claim:
1. A user terminal in a radio communication system where carrier aggregation is carried out by aggregating a first component carrier, which is used in a macro cell, and a second component carrier, which is used in a small cell, the user terminal comprising: a receiver that receives duration configuration information, which indicates a first duration to communicate with a macro base station forming the macro cell by using the first component carrier, and a second duration to communicate with a small base station forming the small cell by using the second component carrier; a processor that configures the first duration and the second duration based on the duration configuration information; and a transmitter that, in the first duration, transmits an uplink signal for the macro base station by using the first component carrier, and that, in the second duration, transmits an uplink signal for the small base station by using the second component carrier, wherein at least in uplink transmission, the transmitter transmits the uplink signal by using either of the first component carrier and the second component carrier switchingly based on the first duration and the second duration configured.