A method of processing data in an IPTV receiver and such an IPTV receiver are disclosed. The method includes receiving location information necessary to acquire a content corresponding to a content reference identifier (CRID) by using the CRID, requesting an Internet protocol multimedia subsystem Gateway (IG) to transmit a session description protocol (SDP) file of the content, wherein the content is identified by the CRID and an instance metadata identifier (IMI), receiving the requested SDP file from the IG, and controlling a session setup for processing the content by using the received location information and the received SDP file.