Apparatus and method for transmitting or receiving broadcast signal

A digital transmitter for delivering at least one service based on hybrid broadcast/broadband networks, the digital transmitter comprising:

• a processor configure to
• generate service layer signaling (SLS) information, wherein the SLS information provides information for discovery and acquisition of the at least one service and at least one content component of the at least one service, further the at least one content component comprises an audio component or a video component,
• generate low level signaling (LLS) information, the LLS information including identification information for identifying a type of at least one table;
• and
• a transmitter configured to transmit a broadcast signal including the SLS information and the LLS information based on a broadcast network,
• wherein the identification information included in the LLS information is used to represent a service list table (SLT) among the at least one table, further the SLT is used to enable a receiver to build a basic service list, and bootstrap a discovery of the SLS information for the at least one service, and
• wherein the SLT includes SLS protocol information for indicating a type of a delivery protocol of the SLS information and uniform resource locator (URL) information comprising a first URL used for obtaining the SLS information via a broadband network different than the broadcast network, wherein the first URL is used to make an hypertext transfer protocol (HTTP) request for requesting a specific SLS information to a signaling server, and
• wherein a response message for the HTTP request from the signaling server includes a metadata envelope, and the metadata envelope includes next URL information comprising a second URL for obtaining next scheduled update for the specific SLS information.

A method for providing at least one service based on hybrid broadcast/broadband networks in a digital receiver, the method comprising:

• receiving a broadcast signal including service layer signaling (SLS) information and low level signaling (LLS) information based on a broadcast network,
• wherein the SLS information provides information for discovery and acquisition of the at least one service and at least one content component of the at least one service, further the at least one content component comprises an audio component or a video component;
• wherein the LLS information includes identification information for identifying a type of at least one table;
• and
• processing the broadcast signal including the SLS information and the LLS information,
• wherein the identification information included in the LLS information is used to represent a service list table (SLT) among the at least one table, further the SLT is used to enable a receiver to build a basic service list, and bootstrap a discovery of the SLS information for the at least one service, and
• wherein the SLT includes SLS protocol information for indicating a type of a delivery protocol of the SLS information and uniform resource locator (URL) information comprising a first URL used for obtaining the SLS information via a broadband network different than the broadcast network,
• wherein the first URL is used to make an hypertext transfer protocol (HTTP) request for requesting a specific SLS information to a signaling server, and
• wherein a response message for the HTTP request from the signaling server includes a metadata envelope, and the metadata envelope includes next URL information comprising a second URL for obtaining next scheduled update for the specific SLS information.

A digital receiver for providing at least one service based on hybrid broadcast/broadband networks, the digital receiver comprising:

• a receiver configured to receive a broadcast signal including service layer signaling (SLS) information and low level signaling (LLS) information based on a broadcast network,
• wherein the SLS information provides information for discovery and acquisition of the at least one service and at least one content component of the at least one service, further the at least one content component comprises an audio component or a video component;
• wherein the LLS information includes identification information for identifying a type of at least one table;
• and
• a processor configured to process the broadcast signal including the SLS information and the LLS information,
• wherein the identification information included in the LLS information is used to represent a service list table (SLT) among the at least one table, further the SLT is used to enable a receiver to build a basic service list, and bootstrap a discovery of the SLS information for the at least one service, and
• wherein the SLT includes SLS protocol information for indicating a type of a delivery protocol of the SLS information and uniform resource locator (URL) information comprising a first URL used for obtaining the SLS information via a broadband network different than the broadcast network,
• wherein the first URL is used to make an hypertext transfer protocol (HTTP) request for requesting a specific SLS information to a signaling server, and
• wherein a response message for the HTTP request from the signaling server includes a metadata envelope, and the metadata envelope includes next URL information comprising a second URL for obtaining next scheduled update for the specific SLS information.