A method and system for differentiating different Protocol Data Units (PDU) in a D2D communication network. The type of PDU to be differentiated is assigned/associated with a unique data/value and transmitted to the destination, by a transmitting User Equipment. At the receiving end, the receiving User Equipment differentiates between different types of PDU packets received, based on the unique data associated with the collected data. Further, the received PDU data is processed based on a suitable packet processing function that matches the PDU type of the PDU data received.