A method performed by a first network element of a wireless telecommunication system for enabling unlicensed band secondary component carrier, the method comprising: determining, by the first network element, an order for a plurality of component carriers, CC, corresponding to wireless channels according to a rank, wherein each of the plurality of CCs are in an unlicensed band; selecting, by the first network element, one of the plurality of CCs having a highest rank according to the rank for the plurality of CCs; and sending, by the first network element to a second network element, data informing of the selection of the one of the plurality of CCs having the highest rank; characterized in that: in the event of receiving, by the first network element from the second network element, a positive confirmation indicating that traffic from a first CC is permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then enabling, by the first network device, traffic from the first CC to be offloaded onto the selected one of the plurality of CCs having the highest rank in response to receiving the confirmation from the second network element, and in the event of receiving, by the first network element from the second network element, a negative confirmation indicating that traffic from a first CC is not permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then selecting, by the first network device, another one of the plurality of CCs having a next highest rank according to the rank for the plurality of CCs in response to receiving the negative confirmation from the second network element. determining, by the first network element, an order for a plurality of component carriers, CC, corresponding to wireless channels according to a rank, wherein each of the plurality of CCs are in an unlicensed band; selecting, by the first network element, one of the plurality of CCs having a highest rank according to the rank for the plurality of CCs; and sending, by the first network element to a second network element, data informing of the selection of the one of the plurality of CCs having the highest rank; characterized in that: in the event of receiving, by the first network element from the second network element, a positive confirmation indicating that traffic from a first CC is permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then enabling, by the first network device, traffic from the first CC to be offloaded onto the selected one of the plurality of CCs having the highest rank in response to receiving the confirmation from the second network element, and in the event of receiving, by the first network element from the second network element, a negative confirmation indicating that traffic from a first CC is not permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then selecting, by the first network device, another one of the plurality of CCs having a next highest rank according to the rank for the plurality of CCs in response to receiving the negative confirmation from the second network element. in the event of receiving, by the first network element from the second network element, a positive confirmation indicating that traffic from a first CC is permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then enabling, by the first network device, traffic from the first CC to be offloaded onto the selected one of the plurality of CCs having the highest rank in response to receiving the confirmation from the second network element, and in the event of receiving, by the first network element from the second network element, a negative confirmation indicating that traffic from a first CC is not permitted to be offloaded onto the selected one of the plurality of CCs having the highest rank then selecting, by the first network device, another one of the plurality of CCs having a next highest rank according to the rank for the plurality of CCs in response to receiving the negative confirmation from the second network element.