A digital broadcast receiver transmits a request for discovery information to a discovery information server, the request including receiver profile information associated with the current state of the digital broadcast receiver. The server identifies, on the basis of the receiver profile information, additional services that are available over an IP with a digital broadcasting receiver, and transmits discovery information for the additional services to the receiver. Then, the digital broadcast receiver determines a receiver channel number in order to locate the additional service at a channel guide on the basis of the received discovery information and logical channel numbers that are assigned to a plurality of broadcast services by a broadcast provider, and generates a channel guide by including the additional services in the determined receiver channel number and the plurality of broadcast services of the respective receiver channel numbers corresponding to the logical channel numbers.