Patent ID: 9559826
Date: 2017-01-31
CPC Classifications: H04L,H04W

Claim:
1. A method of controlling an uplink transmission at a user equipment in a wireless communications system, the user equipment being configured with multiple component carriers, the method comprising: receiving first configuration information for allocating one or more component carrier sets, wherein each of the one or more component carrier sets includes one or more downlink component carriers and an uplink component carrier paired with the one or more downlink component carriers; receiving second configuration information for periodically transmitting an uplink signal; and performing a procedure for periodically transmitting the uplink signal on an uplink component carrier in use of the first configuration information and the second configuration, wherein when the uplink component carrier is in an active state at a time for transmitting the uplink signal, a transmission of the uplink signal is performed on the uplink component carrier at the time for transmitting the uplink signal, wherein when the uplink component carrier is in a non-active state at a time for transmitting the uplink signal, the transmission of the uplink signal is skipped on the uplink component carrier at the time for transmitting the uplink signal, and wherein the uplink component carrier is in the non-active state, when all downlink component carriers paired with the uplink component carrier are in the non-active state.