Method for transmitting data in a communication system and device therefor

A method for a network node operating in a wireless communication system, the method comprising:

• transmitting, to a UE, uplink scheduling information with an indicator indicating the network node associated with the uplink scheduling information;
• receiving data unit via a radio resource indicated by the uplink scheduling information;
• checking whether the received data unit is transmitted by the UE;
• if the received data unit is transmitted by the UE, performing decoding procedure for the received data unit;
• and
• if the received data unit is not transmitted by the UE, discarding the received data unit.

A User Equipment (UE) for operating in a wireless communication system, the UE comprising:

• a Radio Frequency (RF) module;
• and
• a processor operably coupled with the RF module,
• wherein the processor is configured to:
• control the RF module to receive, from a network node, uplink scheduling information with an indicator indicating a network node associated with the uplink scheduling information,
• identify the network node indicated by the indicator, wherein the identified network node supports a least one service,
• generate a data unit including data of the at least one service supported by the identified network node, and
• control the RF module to transmit, to the network node, the generated data unit via a radio resource indicated by the uplink scheduling information.