Apparatus and method for transmitting or receiving broadcast signal

A transmitter for transmitting a broadcast signal, the transmitter comprising:

• a generator configured to generate service data;
• a signaling generator configured to generate Service Layer Signaling (SLS) information providing information for discovery and acquisition of the service data;
• a delivery layer processor configured to process the service data and the SLS information based on one delivery protocol of a Real-Time Object Delivery over Unidirectional Transport (ROUTE) protocol or a MPEG Media Transport (MMT) protocol;
• an encapsulator configured to encapsulate the processed service data and SLS information into Internet Protocol (IP) packets;
• a physical layer processor configured to generate physical layer signaling information that includes wake-up information for identifying whether a receiver is to be woken up;
• and
• a transmitting unit configured to transmit the broadcast signal including the IP packets and the physical layer signaling information,
• wherein the broadcast signal further includes emergency alert table (EAT) information that includes an emergency alert message and
• wherein the EAT information is carried in IP packets with well-known address and port information.

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

• receiving the broadcast signal including service data, service layer signaling (SLS) information, and physical layer signaling information, wherein the SLS information provides information for discovery and acquisition of the service data and wherein the physical layer signaling information includes wake-up information for identifying whether the receiver is to be woken up;
• processing the service data based on the SLS information;
• and
• presenting the processed service data,
• wherein the broadcast signal further includes emergency alert table (EAT) information that includes an emergency alert message,
• wherein the method further comprises:
• acquiring the EAT information based on well-known address and port information,
• presenting an emergency alert content by processing the emergency alert message in the EAT information, and
• establishing the receiver to a stand-by mode by a user input signal.

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

• a tuner configured to receive the broadcast signal including service data, service layer signaling (SLS) information, and physical layer signaling information, wherein the SLS information provides information for discovery and acquisition of the service data and wherein the physical layer signaling information includes wake-up information for identifying whether the receiver is to be woken up;
• a processor configured to process the service data based on the SLS information;
• and
• an output unit configured to present the processed service data,
• wherein the broadcast signal further includes emergency alert table (EAT) information that includes an emergency alert message, and
• wherein the processor further acquires the EAT information based on well-known address and port information, presents an emergency alert content via the output unit by processing the emergency alert message in the EAT information, and establishes the receiver to a stand-by mode by a user input signal.