Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal and method for receiving broadcast signal
A method for transmitting broadcast signals, includes encapsulating input packets including Internet Protocol (IP) packets or Transport Stream (TS) packets into link layer packets in a link layer, each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet, wherein for a first link layer packet including a single packet, the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet, the header further includes header mode information representing a length related to the first link layer packet.
1. A method for transmitting broadcast signals, the method comprising:
encapsulating input packets including Internet Protocol (IP) packets or Transport Stream (TS) packets into link layer packets in a link layer,
each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet,
for a first link layer packet including a single packet, the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet,
the header further includes header mode information representing a length related to the first link layer packet,
for a second link layer packet including a segmented packet, the header further includes S/C (segmentation/concatenation) information having a value representing that the second link layer packet carries the segmented packet,
the header further includes sequence number information for the segmented packet,
for a third link layer packet including a concatenated packet,
the header further includes S/C (segmentation/concatenation) information having a value representing that the third link layer packet carries the concatenated packet,
the header further includes count information representing a number of packets carried by the third link layer packet; and
transmitting a broadcast signal including the link layer packets including the first link layer packet, the second link layer packet, and the third link layer packet.
2. The method according to claim 1 , wherein the header includes base header information and additional header information.
3. An apparatus for transmitting broadcast signals, the apparatus comprising:
an encapsulator configured to encapsulate input packets including Internet Protocol (IP) packets or Transport Stream (TS) packets into link layer packets in a link layer,
each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet,
for a first link layer packet including a single packet,
the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet,
the header further includes header mode information representing a length related to the first link layer packet,
for a second link layer packet including a segmented packet,
the header further includes S/C (segmentation/concatenation) information having a value representing that the second link layer packet carries the segmented packet,
the header further includes sequence number information for the segmented packet,
for a third link layer packet including a concatenated packet,
the header further includes S/C (segmentation/concatenation) information having a value representing that the third link layer packet carries the concatenated packet,
the header further includes count information representing a number of packets carried by the third link layer packet; and
a transmitter configured to transmit a broadcast signal including the link layer packets including the first link layer packet, the second link layer packet, and the third link layer packet.
4. The apparatus according to claim 3 ,
wherein the header includes base header information and additional header information.
5. A method for receiving broadcast signals, the method comprising:
receiving broadcast signals;
decapsulating link layer packets in the broadcast signals,
each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet,
for a first link layer packet including a single packet, the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet,
the header further includes header mode information representing a length related to the first link layer packet,
for a second link layer packet including a segmented packet, the header further includes S/C (segmentation/concatenation) information having a value representing that the second link layer packet carries the segmented packet,
the header further includes sequence number information for the segmented packet,
for a third link layer packet including a concatenated packet, the header further includes S/C (segmentation/concatenation) information having a value representing that the third link layer packet carries the concatenated packet,
the header further includes count information representing a number of packets carried by the third link layer packet.
6. The method according to claim 5 ,
wherein the header includes base header information and additional header information.
7. An apparatus for receiving broadcast signals, the apparatus comprising:
a tuner configured to receive broadcast signals;
a decapsulator configured to decapsulate link layer packets in the broadcast signals;
each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet,
for a first link layer packet including a single packet,
the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet,
the header further includes header mode information representing a length related to the first link layer packet,
for a second link layer packet including a segmented packet,
the header further includes S/C (segmentation/concatenation) information having a value representing that the second link layer packet carries the segmented packet,
the header further includes sequence number information for the segmented packet,
for a third link layer packet including a concatenated packet,
the header further includes S/C (segmentation/concatenation) information having a value representing that the third link layer packet carries the concatenated packet,
the header further includes count information representing a number of packets carried by the third link layer packet.
8. The apparatus according to claim 7 ,
wherein the header includes base header information and additional header information.