Method for transmitting and receiving data in wireless communication system and apparatus supporting the same

A device for transmitting and receiving data in a wireless communication system, comprising:

• a communication unit for transmitting and receiving a radio signal with exterior;
• and
• a processor functionally connected to the communication unit,
• wherein the processor is configured to perform:
• receiving a first message requesting a first service quality from a device, wherein the message includes a first indicator indicating a transmission through a configuration change of a preconfigured session;
• selecting a first session for transmitting the first message according to a specific criteria among at least one preconfigured session, wherein the first session is a session configured for transmitting at least one message requesting a second service quality;
• transmitting a configuration change request message that requests a configuration change of the first session based on the first service quality to a network node;
• receiving a configuration change response message indicating a configuration change result in response to the configuration change request message;
• and
• transmitting the first message through the first session or the second session according to the configuration change response message,
• wherein the message includes at least one of a destination address field including destination information of the message or a source address field including transmitter information of the message.