# US 11,451,335 B2 · Method for gateway signaling for MISO operation and apparatus therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,335 B2 - Document ID: US11451335B2 - Status: Granted - Kind: B2 - Application number: 17/374,367 - Filed: 2021-07-13 - Published: 2021-12-30 - Granted: 2022-09-20 - Earliest claimed: 2017-05-24 - Assignees: Electronics and Telecommunications Research Institute - Applicants: Electronics and Telecommunications Research Institute - Inventors: Jae-Young Lee; Sung-Ik Park; Sun-Hyoung Kwon; Heung-Mook Kim; Nam-Ho Hur - Web page: https://patentgrep.com/patent/US11451335B2 ## CPC - H04B 7/06: at the transmitting station - H04L 1/0643: {block codes} - H04B 7/022: Site diversity; Macro-diversity (using two or more spaced independent antennas H04B7/04) - H04L 1/0681: {adapting space time parameters, i.e. modifying the space time matrix} - H04L 25/49: using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels {; Baseband coding techniques specific to data transmission systems (spectral shaping H04L25/03828)} - H04L 27/367: {using predistortion} - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Disclosed herein are a gateway-signaling method for Multiple-Input Single-Output (MISO) operation and an apparatus for the same. An apparatus for transmitting a broadcast signal according to an embodiment of the present invention includes a predistortion unit for performing predistortion for decorrelating signals corresponding to transmitters using the number of transmitters used for MISO and a transmitter coefficient index that are identified using a timing and management packet transmitted through a Studio-to-Transmitter Link (STL), thereby generating a pre-distorted signal; and an RF signal generation unit for generating an RF transmission signal using the pre-distorted signal corresponding to the transmitter coefficient index. ## Claims ### Claim 1 A broadcast gateway device, comprising: a packet generation unit for generating a timing and management packet for signaling the number of transmitters used for Multiple-Input Single-Output (MISO) and a transmitter coefficient index to one transmitter of the transmitters; and an STL transmission unit for transmitting the timing and management packet to the transmitters through a Studio-to-Transmitter Link (STL), wherein the timing and management packet includes a structure data part including structure data and a per-transmitter data part including per-transmitter data, wherein the structure data includes a first MISO field representing the number of transmitters used for the MISO, wherein the per-transmitter data includes a second MISO field representing the transmitter coefficient index of the one transmitter, and wherein the first MISO field is a 2-bit field, and is set based on the number of different MISO filter codes in use within a Single-Frequency Network (SFN). ### Claim 2 (depends on 1) The broadcast gateway device of claim 1, wherein the MISO is performed through predistortion processing using Transmit Diversity Code Filter Set (TDCFS). ### Claim 3 (depends on 2) The broadcast gateway device of claim 2, further comprising: a structure data generation unit for generating the structure data, which includes first data fields for all of the transmitters; and a per-transmitter data generation unit for generating the per-transmitter data, which includes second data fields for the one transmitter. ### Claim 4 (depends on 3) The broadcast gateway device of claim 3, wherein: the structure data generation unit generates the first MISO field as one of the first data fields, and the per-transmitter data generation unit generates the second MISO field as one of the second data fields. ### Claim 5 (depends on 4) The broadcast gateway device of claim 4, wherein the timing and management packet includes the structure data and the per-transmitter data. ### Claim 6 (depends on 1) The broadcast gateway device of claim 1, wherein the second MISO field is a 2-bit field, and indicates a specific MISO filter code assigned to the one transmitter. ### Claim 7 (depends on 6) The broadcast gateway device of claim 6, wherein the second MISO field is set to a value that is equal to or less than a value of the first MISO field. ### Claim 8 (depends on 7) The broadcast gateway device of claim 7, wherein the MISO filter codes correspond to 64 coefficients or 256 coefficients. ### Claim 9 A broadcast gateway signaling method, comprising: generating structure data, which includes first data fields for all of transmitters used for Multiple-Input Single-Output (MISO); generating per-transmitter data, which includes second data fields only for one transmitter of the transmitters; generating a timing and management packet, which includes the structure data and the per-transmitter data; and transmitting the timing and management packet to the transmitters through a Studio-to-Transmitter Link (STL), wherein the timing and management packet includes a structure data part including the structure data and a per-transmitter data part including the per-transmitter data, wherein the structure data includes a first MISO field representing the number of transmitters used for the MISO, wherein the per-transmitter data includes a second MISO field representing the transmitter coefficient index of the one transmitter, and wherein the first MISO field is a 2-bit field, and is set based on the number of different MISO filter codes in use within a Single-Frequency Network (SFN). ### Claim 10 (depends on 9) The broadcast gateway signaling method of claim 9, wherein the MISO is performed through predistortion processing using Transmit Diversity Code Filter Set (TDCFS). ### Claim 11 (depends on 10) The broadcast gateway signaling method of claim 10, wherein: the first data fields include the first MISO field, and the second data fields include the second MISO field. ### Claim 12 (depends on 9) The broadcast gateway signaling method of claim 9, wherein the second MISO field is set to a value that is equal to or less than a value of the first MISO field.