Apparatus and method for transmitting or receiving broadcast signal
A method for transmitting a broadcast signal is disclosed. The method for transmitting a broadcast signal according to an embodiment of the present invention includes performing delivery layer processing of a broadcast service data and signaling information with respect to the broadcast service data, performing UDP/IP encapsulation of a broadcast service data and signaling information with respect to the broadcast service data and performing physical layer processing of a broadcast service data and signaling information with respect to the broadcast service data.
1. A method for transmitting a broadcast signal, comprising:
generating SLS information and SLT information with respect to broadcast service data, wherein the SLS information provides a discovery and an acquisition of the broadcast service data, and wherein the SLT information provides a discovery of the SLS information and building of a basic service list;
processing the broadcast service data and the SLS information based on a delivery protocol;
UDP (User Datagram Protocol)/IP (Internet Protocol) encapsulating the broadcast service data, the SLS information and Low level Signaling (LLS) information including the SLT information; and
generating a signal frame by physical layer processing of the broadcast service data, the SLS information and the LLS information,
wherein the delivery protocol includes at least one of a Real-Time Object Delivery over Unidirectional Transport (ROUTE) protocol or an MPEG Media Transport (MMT) protocol.
2. The method for transmitting a broadcast signal of claim 1 , wherein the LLS information is carried in a payload of an IP packet that has a predetermined address and port number.
3. The method for transmitting a broadcast signal of claim 2 , wherein the LLS information includes Emergency Alert (EA) related signaling information.
4. The method for transmitting a broadcast signal of claim 3 , wherein the EA related signaling information corresponds to a Common Alerting Protocol (CAP) message.
5. The method for transmitting a broadcast signal of claim 4 , wherein the EA related signaling information includes signaling information for media content transmission,
when a rich media content is delivered through broadband, the EA related signaling information indicates Uniform Resource Locator (URL) information for receiving the rich media content, and when the rich media content is delivered through broadcast, the EA related signaling information indicates LCT channel related information in which the rich media content is delivered.
6. The method for transmitting a broadcast signal of claim 4 , wherein the SLT information includes service category information, and a service category indicated by the service category information includes a linear A/V service, a linear audio only service, an application-based service and an EA service.
7. The method for transmitting a broadcast signal of claim 3 ,
wherein when the signal frame includes the EA related signaling information, physical layer signaling information of the signal frame indicates wake-up from a standby mode of a receiver, and includes wake-up signal indicating a wake-up version.
8. A broadcast signal transmitter, comprising:
a signaling generator configured to generate Service Layer Signaling (SLS) information providing a discovery and an acquisition of broadcast service data and Service List Table (SLT) information providing building of a basic service list and an acquisition of the SLS information;
a delivery layer processor configured to process the broadcast service data and the SLS information based on at least one delivery protocol of a Real-Time Object Delivery over Unidirectional Transport (ROUTE) protocol or an MPEG Media Transport (MMT) protocol;
a UDP/IP encapsulator configured to respectively UDP (User Datagram Protocol)/IP (Internet Protocol) encapsulate the broadcast service data, the SLS information and Low level Signaling (LLS) information including the SLT information; and
a physical layer processor configured to generate a signal frame by performing physical layer processing of the broadcast service data, the SLS information and the LLS information.
9. The broadcast signal transmitter of claim 8 , wherein the LLS information is carried in a payload of an IP packet that has a predetermined address and port number.
10. The broadcast signal transmitter of claim 9 , wherein the LLS information includes Emergency Alert (EA) related signaling information.
11. The broadcast signal transmitter of claim 10 , wherein the EA related signaling information corresponds to a Common Alerting Protocol (CAP) message.
12. The broadcast signal transmitter of claim 11 , wherein the EA related signaling information includes signaling information for media content transmission,
when a rich media content is delivered through broadband, the EA related signaling information indicates Uniform Resource Locator (URL) information for receiving the rich media content, and when the rich media content is delivered through broadcast, the EA related signaling information indicates LCT channel related information in which the rich media content is delivered.
13. The broadcast signal transmitter of claim 11 , wherein the SLT information includes service category information, and a service category indicated by the service category information includes a linear A/V service, a linear audio only service, an application-based service and an EA service.
14. The method for transmitting a broadcast signal of claim 10 ,
wherein when the signal frame includes the EA related signaling information, physical layer signaling information of the signal frame includes wake-up signal indicating wake-up from a standby mode of a receiver and indicating a wake-up version.