Digital broadcasting system and method of processing data in digital broadcasting system

A receiver for processing a broadcast signal, the receiver comprising:

• a tuner to receive the broadcast signal including service data of a service and signaling information for acquisition of the service;
• a demodulator to demodulate the service data and the signaling information;
• a decoder to decode the demodulated signaling information,
• wherein the signaling information includes first signaling information and second signaling information,
• wherein the first signaling information includes type information for identifying a type of the service and channel information for identifying a channel number of the service,
• wherein the second signaling information includes Internet Protocol (IP) address information for accessing of at least one IP packet delivering the service data,
• wherein the at least one IP packet is included in a payload of a data packet, and
• wherein a header of the data packet includes a pointer field which represents start position information of the payload;
• a first processor to acquire the at least one IP packet based on the first signaling information and the second signaling information;
• and
• a second processor to provide the service to a user by processing the service data delivered in the acquired at least one IP packet.