# US 2016/0366368 A1 · Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal and method for receiving broadcast signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0366368 A1 - Document ID: US20160366368A1 - Status: Published application - Kind: A1 - Application number: 15/117,793 - Filed: 2015-12-30 - Published: 2016-12-15 - Earliest claimed: 2015-01-02 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Woosuk KWON - Web page: https://patentgrep.com/patent/US20160366368A1 ## CPC - H04N 7/08: Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band {, e.g. by time division (H04N7/007 takes precedence)} - H04L 65/00: Network arrangements, protocols or services for supporting real-time applications in data packet communication (real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00) - H04L 65/61: for supporting one-way streaming services, e.g. Internet radio - H04L 65/613: for the control of the source by the destination (control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637) - H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP] - H04L 65/762: {at the source (reformatting of additional data in video distribution servers H04N21/2355)} - H04L 69/00: Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass (networks security protocols H04L9/40; wireless communication networks H04W) - H04L 69/04: Protocols for data compression, e.g. ROHC - H04L 69/22: Parsing or analysis of headers - H04N 19/46: Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence) - H04N 21/23614: {Multiplexing of additional data and video streams (arrangements for simultaneous broadcast of plural pieces of information H04H20/28)} - H04N 21/2362: Generation or processing of Service Information [SI] - H04N 21/2381: Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network {(transmission of MPEG streams over ATM H04L12/5601)} - H04N 21/2385: Channel allocation (H04N21/266 takes precedence); Bandwidth allocation (H04N21/24 takes precedence {; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16}) - H04N 21/26258: {for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list (retrieval of multimedia data based on playlists G06F16/40)} - H04N 21/434: Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream {(demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00)} - H04N 21/4882: {for displaying messages, e.g. warnings, reminders (arrangements for providing short real-time information to substation in data switching networks H04L12/1895)} - H04N 21/6125: {involving transmission via Internet (transmission by internet of broadcast information H04H60/82)} - H04N 21/6131: {involving transmission via a mobile phone network (wireless downlink channel access H04W74/006)} - H04N 21/64322: {IP} - H04N 21/814: {comprising emergency warnings (arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895)} - H04N 21/8456: {by decomposing the content in the time domain, e.g. in time segments} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method of transmitting a broadcast signal, according to an embodiment of the present invention, includes: compressing headers of first IP packets including first broadcast data; generating first link layer packets including the header-compressed first IP packets and second link layer packets including second IP packets containing second broadcast data; generating third link layer packets including link layer signaling information providing information necessary to process the first link layer packets and the second link layer packets; and generating one or more broadcast frames including the first link layer packets, the second link layer packets and the third link layer packets. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A method of transmitting a broadcast signal, the method comprising: generating at least one first link layer packet including data packets that include broadcast data; generating at least one second link layer packet including link layer signaling information; generating one or more broadcast frames including the at least one first link layer packet and the at least one second link layer packet; and transmitting the broadcast signal including the one or more broadcast frames, wherein generating the at least one first link layer packet further comprises: performing selectively header compression on the data packets, wherein, when the data packets are Transport Stream (TS) packets, information to identify whether the header compression is performed is included in a header of the at least one first link layer packet, and wherein, when the data packets are Internet Protocol (IP) packets, the information to identify whether the header compression is performed is included in at least the header of the at least one first link layer packet or the link layer signaling information. ### Claim 16 (depends on 15) The method of claim 15, wherein, when the data packets are the TS packets, a payload of the at least one first link layer packet includes a plurality of TS packets and the header of the at least one first link layer packet further includes information to indicate a number of the plurality of TS packets in the payload. ### Claim 17 (depends on 16) The method of claim 16, wherein, when two or more successive TS packets in the payload have sequentially increased continuity counter information and the other TS header information is a same, the header compression is performed by sending a TS header of a first TS packet of the two or more successive TS packets and deleting TS headers of the other TS packets of the two or more successive TS packets. ### Claim 18 (depends on 16) The method of claim 16, wherein the header compression is performed by deleting a sync byte of each of the plurality of TS packets. ### Claim 19 (depends on 15) The method of claim 15, wherein, when the data packets are the IP packets, a payload of the at least one first link layer packet includes one of a single IP packet, a part of the single IP packet, and two or more IP packets and the header of the at least one first link layer packet further includes information to identify a configuration of the payload. ### Claim 20 (depends on 19) The method of claim 19, wherein the header compression on IP headers of the IP packets is performed based on a Robust Header Compression (ROHC) algorithm. ### Claim 21 An apparatus for transmitting a broadcast signal, the apparatus comprising: a link layer processor to generate at least one first link layer packet including data packets that include broadcast data and generate at least one second link layer packet including link layer signaling information; a physical layer processor to generate one or more broadcast frames including the at least one first link layer packet and the at least one second link layer packet; and a transmitting unit to transmit the broadcast signal including the one or more broadcast frames, wherein the link layer processor is further to: perform selectively header compression on the data packets, wherein, when the data packets are Transport Stream (TS) packets, information to identify whether the header compression is performed is included in a header of the at least one first link layer packet, and wherein, when the data packets are Internet Protocol (IP) packets, the information to identify whether the header compression is performed is included in at least the header of the at least one first link layer packet or the link layer signaling information. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein, when the data packets are the TS packets, a payload of the at least one first link layer packet includes a plurality of TS packets and the header of the at least one first link layer packet further includes information to indicate a number of the plurality of TS packets in the payload. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein, when two or more successive TS packets in the payload have sequentially increased continuity counter information and the other TS header information is a same, the header compression is performed by sending a TS header of a first TS packet of the two or more successive TS packets and deleting TS headers of the other TS packets of the two or more successive TS packets. ### Claim 24 (depends on 22) The apparatus of claim 22, wherein the header compression is performed by deleting a sync byte of each of the plurality of TS packets. ### Claim 25 (depends on 21) The apparatus of claim 21, wherein, when the data packets are the IP packets, a payload of the at least one first link layer packet includes one of a single IP packet, a part of the single IP packet, and two or more IP packets and the header of the at least one first link layer packet further includes information to identify a configuration of the payload. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the header compression on IP headers of the IP packets is performed based on a Robust Header Compression (ROHC) algorithm.