Method for selectively processing traffic in wireless communication system supporting multiple access network, and apparatus supporting same

A wireless apparatus that operates in a wireless communication system, the wireless apparatus comprising:

• a first RF unit transmitting and receiving a first access network signal;
• a second RF unit transmitting and receiving a second access network signal;
• and
• a processor that operates in functional combination with the first RF unit and the second RF unit,
• wherein the processor is configured to
• receive traffic routing information from a first access network, and
• process traffic on the first access network based on the traffic routing information, and
• the traffic routing information indicates whether at least one traffic on the first access network is traffic which is permitted to be processed through a second access network, and
• the processing of the traffic based on the traffic routing information includes
• determining whether the traffic is able to be processed through the second access network, and
• processing the traffic through the second access network when the traffic is able to be processed through the second access network.