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US 10,856,021 B2Granted
Broadcast signal transmission apparatus, broadcast signal reception apparatus, broadcast signal transmission method, and broadcast signal reception method
AssigneeLG Electronics Inc.
InventorsWoosuk Kwon, Minsung Kwak, Kyoungsoo Moon
Life of this patent
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Abstract
The present invention suggests a method for transmitting a broadcast signal. The method for transmitting a broadcast signal according to the present invention suggests a system capable of supporting a next-generation broadcast service in an environment that supports a next-generation hybrid broadcast using a terrestrial broadcasting network and an Internet network. In addition, suggested is an efficient signaling scheme which is capable of encompassing both a terrestrial broadcasting network and an Internet network in an environment that supports a next-generation hybrid broadcast.
Claims16
A method of transmitting broadcast signals, the method comprising:
- compressing Internet Protocol (IP) headers included in first IP packets carrying service components for a service;
- generating second IP packets carrying signaling data that includes information for listing services including information for identifying the service,
- wherein the second IP packets are carried in a dedicated IP address and a dedicated User Datagram Protocol (UDP) port;
- extracting context information from the compressed first IP packets and generating link layer signaling data that includes the context information;
- encapsulating each of the second IP packets, the link layer signaling data and the compressed IP packets into each of first link layer packets, second link layer packets and third link layer packets;
- generating a signal frame including the first link layer packets, the second link layer packets, and the third link layer packets,
- wherein the first link layer packets and the second link layer packets are carried by a first Physical Layer Pipe (PLP) and the third link layer packets are carried by multiple PLPs that are different from the first PLP,
- wherein context information is extracted from an IR packet in the compressed first IP packets, so that the context information includes static context information for a second PLP of the multiple PLPs, and
- extracted from an IR packet and an IR-dynamic packet in the compressed first IP packets, so that the context information includes static context information and dynamic context information for a third PLP of the multiple PLPs,
- wherein the link layer signaling data includes a PLP identifier corresponding to the link layer signaling data and information representing whether context information is extracted from the IR packet or context information is extracted from the IR packet and the IR-dynamic packet in a PLP identified by the PLP identifier;
- and
- transmitting the broadcast signals including the signal frame.
9 more elements
An apparatus for transmitting broadcast signals, the apparatus comprising:
- a link layer processor configured to:
- compress Internet Protocol (IP) headers included in first IP packets carrying service components for a service;
- extract context information from the compressed first IP packets and generate link layer signaling data that includes the context information;
- and
- encapsulate each of second IP packets, the link layer signaling data, and the compressed IP packets into each of first link layer packets, second link layer packets and third link layer packets,
- wherein the second IP packets carrying signaling data that includes information for listing services including information for identifying the service, and
- wherein the second IP packets are carried in a dedicated IP address and a dedicated User Datagram Protocol (UDP) port;
- a frame builder configured to generate a signal frame including the first link layer packets, the second link layer packets, and the third link layer packets,
- wherein the first link layer packets and the second link layer packets are carried by a first Physical Layer Pipe (PLP) and the third link layer packets are carried by multiple PLPs that are different from the first PLP,
- wherein context information is extracted from an IR packet in the compressed first IP packets, so that the context information includes static context information for a second PLP of the multiple PLPs, and
- extracted from an IR packet and an IR-dynamic packet in the compressed first IP packets, so that the context information includes static context information and dynamic context information for a third PLP of the multiple PLPs,
- wherein the link layer signaling data including a PLP identifier corresponding to the link layer signaling data and information representing whether context information is extracted from the IR packet or context information is extracted from the IR packet and IR-dynamic packet in a PLP identified by the PLP identifier;
- and
- a transmitter configured to transmit the broadcast signals including the signal frame.
11 more elements
A method of receiving broadcast signals, the method comprising:
- receiving the broadcast signals including a signal frame including first link layer packets, second link layer packets, and third link layer packets,
- wherein the first link layer packets and the second link layer packets are carried by a first Physical Layer Pipe (PLP) and the third link layer packets are carried by multiple PLPs that are different from the first PLP;
- decapsulating the first link layer packets and the second link layer packets,
- the first link layer packets including second IP packets including signaling data that includes information for listing services,
- wherein the second IP packets are carried in the dedicated IP address and the dedicated UDP port, the information for listing services including information for identifying the service;
- obtaining link layer signaling data including context information extracted from compressed IP packets in response to a compression of an IP header included in each of first IP packets, from the second link layer packets,
- wherein context information is extracted from an IR packet in the compressed first IP packets, so that the context information includes static context information for a second PLP of the multiple PLPs, and
- extracted from an IR packet and an IR-dynamic packet in the compressed first IP packets, so that the context information includes static context information and dynamic context information for a third PLP of the multiple PLPs,
- wherein the link layer signaling data including a PLP identifier corresponding to the link layer signaling data and information representing whether context information is extracted from the IR packet or context information is extracted from the IR packet and the IR-dynamic packet in a PLP identified by the PLP identifier;
- decapsulating the third link layer packets to obtain compressed IP packets carrying service components;
- decompressing the compressed IP packets based on the context information included in the link layer signaling data.
8 more elements
An apparatus for receiving broadcast signals, the apparatus comprising:
- a receiver configured to receive the broadcast signals including a signal frame including first link layer packets, second link layer packets, and third link layer packets,
- wherein the first link layer packets and the second link layer packets are carried by a first Physical Layer Pipe (PLP) and the third link layer packets are carried by multiple PLPs that are different from the first PLP;
- a first decapsulator configured to decapsulate the first link layer packets and the second link layer packets,
- the first link layer packets including second IP packets including signaling data that includes information for listing services,
- wherein the second IP packets are carried in the dedicated IP address and the dedicated UDP port, the information for listing services including information for identifying the service;
- a link layer signaling parser configured to obtain link layer signaling data including context information extracted from compressed IP packets in response to a compression of an IP header included in each of first IP packets, from the second link layer packets,
- wherein context information is extracted from an IR packet in the compressed first IP packets, so that the context information includes static context information for a second PLP of the multiple PLPs, and
- extracted from an IR packet and an IR-dynamic packet in the compressed first IP packets, so that the context information includes static context information and dynamic context information for a third PLP of the multiple PLPs,
- wherein the link layer signaling data including a PLP identifier corresponding to the link layer signaling data and information representing whether context information is extracted from the IR packet or context information is extracted from the IR packet and the IR-dynamic packet in a PLP identified by the PLP identifier;
- a second decapsulator configured to decapsulate the third link layer packets to obtain compressed IP packets carrying service components;
- and
- a decompressor configured to decompress the compressed IP packets based on the context information included in the link layer signaling data.
9 more elements
Dependencies are inferred from the claim text.