When the UE determines that the transmission of the SRS in the uplink portion of the first CC would at least partially collide with the uplink transmission on the second CC, at 1208, the UE may need to determine whether to switch from the second CC or a third CC in order to transmit the SRS. As illustrated at FIG. 14, the UE may determine to transmit a second uplink transmission on a third CC at 1402. The UE may determine at 1404 that the transmission of the SRS in the uplink portion of the first CC would at least partially collide with the second uplink transmission on the third CC. If the UE does not identify a collision between the SRS and the second uplink transmission, the UE may transmit the second uplink transmission at 1406. When the UE determines that a collision would occur, the UE may then determine at 1408 whether to switch from the uplink transmission on the second CC or the second uplink transmission on the third CC to transmit the SRS in the uplink portion of the first CC. The determination at 1408 may be based on at least one of a CC index of the second CC and a CC index of the third CC, content of the first uplink transmission and content the second uplink transmission, and an indication received from an eNB. For example, the determination of whether to switch from the second CC or from the third CC to transmit the SRS in the uplink portion of the first CC may be based on an indication received from the eNB at 1412. The UE may transmit a capability of the UE to the eNB at 1410, and the indication received from the eNB may be based on the capability of the UE. Although the transmission at 1410 and the reception of instructions at 1412 are illustrated as occurring before the UE determines that a collision will occur between the SRS and the second uplink transmission, this is one example of the order in which such communication may occur. The UE may transmit its capability and other information to the eNB and/or may receive instructions from the eNB after the identification of the collision as well as prior to determining to transmit the second uplink transmission at 1402. Aspects of FIG. 14 may be performed as a part of the method illustrated in FIG. 12.