Transmitting/receiving system and method of processing data in the transmitting/receiving system

A method of receiving a broadcast signal in a receiver, the method comprising:

• receiving a broadcast signal including a transmission frame, the transmission frame comprising a collection of data groups of mobile data, wherein the collection of data groups carries signaling information and an ensemble of the mobile data, wherein each data group of the collection of data groups includes at least six known data sequences each of which have predetermined data and a reserved area for transmitting a portion of the signaling information between a first known data sequence and a second known data sequence, wherein the predetermined data of each of the at least six know data sequences is same for each of the data groups, and the at least one of the six known data sequences is used for channel equalizing of the broadcast signal, wherein the ensemble of mobile data includes the mobile data and service signaling channel data describing services carried in the ensemble, wherein the signaling information includes a first ensemble identifier indentifying the ensemble and a service identifier identifying a service of mobile data, wherein the signaling information provides binding information between the service and the ensemble carrying the service for proper ensemble selection before accessing the service, wherein the service signaling channel data includes a second ensemble identifier having a value matching a value of the first ensemble identifier in the signaling information, and wherein the service signaling channel data includes Internet protocol (IP) address information for the service and provides IP stream component level information for service rendering;
• demodulating the broadcast signal;
• and
• acquiring the service from the demodulated broadcast signal in a hierarchical manner in which the ensemble is accessed first based on the signaling information, and subsequently the service is accessed based on the service signaling channel data in the accessed ensemble.