Broadcast signal transmission device, broadcast signal reception device, broadcast signal transmission method, and broadcast signal reception method

A device of transmitting a broadcast signal, the device comprising:

• a link layer processor configured to process one or more input packets to generate one or more link layer packets, a link layer packet including a header and a payload,
• the header including packet type information representing a type of an input packet in the payload and payload configuration information representing a configuration of the payload,
• the payload configuration information representing whether the link layer packet carries a single input packet or not,
• wherein the type of the input packet is either an Internet Protocol (IP) packet or a Movie Picture Exports Group (MPEG) Transport Stream (TS) packet,
• wherein the payload configuration information is set to:
• 0 (zero) in response to a layer packet including a single input packet, and
• 1 in response to a link layer packet including more than one input packet or a segmented part of one input packet,
• in response to the link layer packet including the single input packet, the header includes header mode information, the header mode information is set to:
• 0 (zero) in response to a payload length that is less than 2048 bytes,
• 1 in response to a payload length that is larger than 2047 bytes;
• a processor configured to process the one or more link layer packets to generate the broadcast signal;
• and
• a broadcast signal transmitter configured to transmit the broadcast signal.

A device of receiving a broadcast signal, the device comprising:

• a tuner configured to receive the broadcast signal including one or more link layer packets;
• a first decoder configured to decode the one or more link layer packets carrying one or more input packets,
• a link layer packet including a header and a payload,
• the header including packet type information representing a type of an input packet in the payload and payload configuration information representing a configuration of the payload,
• the payload configuration information representing whether the link layer packet carries a single input packet or not,
• wherein the type of the input packet is either an Internet Protocol (IP) packet or a Movie Picture Exports Group (MPEG) Transport Stream (TS) packet,
• in response to the payload configuration information that is set to 0 (zero), a link layer packet includes a single input packet,
• in response to the payload configuration information that is set to 1, a link layer packet includes more than one input packet or a segmented part of one input packet, and
• in response to the payload configuration information that is set to 0 (zero), the header further includes header mode information, the header mode information is set to:
• 0 (zero) in response to a payload length that is less than 2048 bytes,
• 1 in response to a payload length that is larger than 2047 bytes,
• wherein the first decoder is further configured to decode data in each link layer packet based on information in the header of each link layer packet;
• and
• a second decoder configured to decode the one or more input packets.

A method of receiving a broadcast signal, the method comprising:

• receiving the broadcast signal including one or more link layer packets,
• decoding the one or more link layer packets carrying one or more input packets,
• a link layer packet including a header and a payload,
• the header including packet type information representing a type of an input packet in the payload and payload configuration information representing a configuration of the payload,
• the payload configuration information representing whether the link layer packet carries a single input packet or not,
• wherein the type of the input packet is either an Internet Protocol (IP) packet or a Movie Picture Exports Group (MPEG) Transport Stream (TS) packet,
• in response to the payload configuration information that is set to 0 (zero), a link layer packet includes a single input packet,
• in response to the payload configuration information that is set to 1, a link layer packet includes more than one input packet or a segmented part of one input packet, and
• in response to the payload configuration information that is set to 0 (zero), the header further includes header mode information, the header mode information is set to:
• 0 (zero) in response to a payload length that is less than 2048 bytes,
• 1 in response to a payload length that is larger than 2047 bytes,
• wherein data in the payload of each link layer packet is decoded based on information in the header of each link layer packet;
• and
• decoding the one or more input packets.