Current status and future improvement of the terrestrial broadcasting service based on ATSC 3.0 standard in Korea 2020.12.23. 13:25~13:45 Sungho Jeon, Ph.D. UHD Master Control Room Media Platform Department Korean Broadcasting System (KBS) It has been almost 4 years since Korea started terrestrial UHD main broadcasting based on ATSC 3.0 standard in May 2017. Currently, various technologies are being developed utilizing the multi-channel, mobile, and interactive features of the ATSC 3.0 standard. Also, various service models are created through the connection between ATSC 3.0 broadcasting and 5G communication networks, and a project to demonstrate them is being promoted in Jeju Island. Based on this, I would like to discuss the future direction of Korea’s service development.

At 5 AM on 31 May 2017, World’s First ATSC 3.0 Based Regular Terrestrial Broadcasting Started! KBS UHDTV Master Control Room Ceremony for World’s First Terrestrial UHDTV Broadcasting in Korea @ KINTEX

UHDTV Master Control Room Transmission Site ATSC 3.0 Chipset Embedded UHDTV RTP/UDP/IP (STLTP) RF HEVC Encoder ATSC 3.0 IP Multiplexer ATSC 3.0 Broadcast Gateway IEEE 1588v2 PTP Master Clock, etc. ATSC 3.0 Exciter Installation of ATSC 3.0 End-to-End Chain MCR → (STLTP) → Transmission Site → (RF) → UHDTV at home

KBS1 UHD Ch.52 (6MHz) SBS UHD Ch.53 (6MHz) Guardband (8MHz) PS-LTE Uplink (10MHz) Mobile Broadband Uplink (20MHz) Guard band (5MHz) EBS UHD Ch.54 (6MHz) MBC UHD Ch.55 (6MHz) KBS2 UHD Ch.56 (6MHz) Guardband(2MHz) PS-LTE Downlink (10MHz) Mobile Broadband Downlink (20MHz) Guardband(3MHz) 698 710 718 718 728 748 753 759 765 771 773 783 803 806 [Unit : MHz] 700 MHz frequency band chart in KOREA Channel 56 / fc = 768 MHz Channel 53 / fc = 707 MHz Channel 52 / fc = 701 MHz Channel 54 / fc = 756 MHz Channel 55 / fc = 762 MHz 4 What Frequencies are Allocated for ATSC 3.0 Based Terrestrial UHDTV Broadcasting?

5 2017 May 31 December 28 Gangneung Ulsan Busan (a) Phase 1 / May 2017 (b) Phase 2 / December 2017 Wonju Daejeon Gwangju Seoul Where and When Starts ATSC 3.0 Based Terrestrial UHDTV Broadcasting? Completed as planned 700 MHz frequency band 470 – 698 MHz DTV band Daegu

From May 2020, ATSC 3.0 Expands On-Air Coverage in U.S. Markets [source] https://www.atsc.org/nextgen-tv/deployments/ Dallas-Forth Worth 2020.05.26. Las Vegas 2020.05.20. Boise, Idaho 2020.07.28 Portland, Ore. 2020.06.24 Nashville Pheonix 2020.06.16 Pittsburgh 2020.06.30 Salt Lake City Santa Barbara Orlando -Daytona Los Angeles, CA East Lansing Denver Broadcasters have announced that they are working together to bring ATSC 3.0 first to 62 markets across the country, which collectively would mean next-generation TV reception by more than 75% of all viewers. CTA Approves NEXTGEN TV Name, Logo (2019.09.26.) 2020.10.06. Austin, TX 4K-UHD Service 2020.10.22. Mobile-Pensacola 2020.10.08. Oklahoma City 2020.11.19. Raleigh 2020.11.22. Norfolk

7 (c) Phase 3 / 2021~2023 ATSC 1.0 Switch-Off New Roll-out Plan Announced 2018 2020 2019 2021 2027 2023 Where and When Starts ATSC 3.0 Based Terrestrial UHDTV Broadcasting? 2021 Jeju Dec. 09 Field measurement campaign of ATSC 3.0 on-channel repeater 700 MHz frequency band 470 – 698 MHz DTV band Development of MATV signal processor

Fixed Reception for 4K-UHD Channel Directional antenna Omni-directional antenna How Can We Watch ATSC 3.0 Based Terrestrial UHDTV Broadcasting? Antenna input for UHDTV (ATSC 3.0) Antenna input for DTV (ATSC 1.0)

What’s New & Why We Start ATSC 3.0 Based Terrestrial UHDTV Broadcasting? Viewer-friendly reception environment • Fixed and mobile reception • Direct reception environment anywhere Fixed Indoor Reception Mobile Outdoor Reception Improved service with the Internet • IP-based interactive & personalized service with companion screen • Public service capabilities (Emergency alert/caption) Advanced Emergency Alerting UHD Video On-Demand Additional Information (ESG, IBB) Ultra High-Definition TV • 4 times better image quality compared to FHD • HDR, WCG, HFR techniques for realistic broadcasting • Immersive audio experience 2K FHD 5.1ch 4K UHD 22.2ch 3840 2160 UHDTV * HDR = High Dynamic Range, WCG = Wide Color Gamut, HFR = High Frame Rate , ESG = Electronic Service Guide, IBB = Integrated Broadcast Broadband 9

▪ ATSC 3.0 signal is sent from headend master antenna system to TV connection outlets in each room via in-building coaxial network Outlet for receiving terrestrial TV Direct Reception Headend Office In-building coaxial network Weak Received Signal ATSC 3.0 Signal Processor Strong Transmitted Signal * MATV = Master Antenna TV Plan to Viewer-friendly Reception Environment (1) MATV System inside Building (2018~)

▪ To fill gaps in the coverage or extend the service area of the terrestrial UHD broadcasting network TO-BE AS-IS KBS SFN Transmitter 1 SFN Transmitter 2 SFN Transmitter 3 Shadowing Area Shadowing Area KBS SFN Transmitter 1 SFN Transmitter 2 SFN Transmitter 3 RF-to-RF OCR RF-to-RF OCR * OCR = On-Channel Repeater 11 Efforts to Ensure Seamless Service Coverage (2) UHDTV On-Channel Repeater (2020~)

(2020) Disaster Warning Broadcasting Currently On-Air through ATSC 3.0 Network (Left) UHD receiver installed and operated on a bus in Seoul (Right) A disaster warning message is displayed on a public signage. From September 2019, disaster warning message is sent “separately from Video/Audio.”

Conditions for viewing ATSC 3.0 interactive service (2020) ATSC 3.0 Supports Interactive Service: IBB and ESG (1) AST Signaling sent over the air (2) Access the page (3) Executing the service Configuring AST Signaling * MCR = Master Control Room, AST = Application Signaling Table UHD MCR Transmission Site Upload the interactive service Direct Reception of the broadcast signal Internet Connection

KBS NEWS 24 Streaming channel COVID-19 Code-of-Conduct KBS NEWS Official Website KBS 1 Radio Streaming channel ① ② ③ ④ (2020) ATSC 3.0 Interactive Service based on IBB for Providing the COVID-19 Information Service item and icon are changed during typhoon is happened.

While watching KBS UHD channel, press the [Program Guide] button to enter the ESG page Select program on the [Program Guide] page Select the [Related Content] to watch Watching ESG disaster information channel (2020) ATSC 3.0 Interactive Service based on ESG for Providing the COVID-19 Information

08.09. 5th Typhoon 08.26.~24. 6th Typhoon 09.02.~03. 7th Typhoon 09.06.~07. 8th Typhoon IBB Access Data on Daily Basis 사랑 제일 교회 (2020) Broadcasters can acquire viewing patterns in real time through user’s access data. Weekend Weekend Weekend Weekend Weekend ESG Access Data on Daily Basis

UHDTV ATSC3.0 Transmitter (4K) HEVC Encoder ATSC3.0 Transmitter IP Multiplexer Scrambler for Contents Protection (2K) HEVC Encoder GPS (TAI) PTP ATSC3.0 Broadcast Gateway PTP 4K-UHD Content 1.3 ~ 52.2 Mbps Microwave (Wireless) IP Network (Wireline) SLS/LLS Generator PTP (TAI) Scrambler for Contents Protection Single Frequency Network Mobile Reception Fixed Reception 9-1 9-2 Bootstrap Preamble Time Frequency Frame Subframe 0 Subframe n-1 . . . Subframe 0 PLP#0 Subframe 1 PLP#1 for HD-Mobile for 4K-UHD 2-Subframe Configuration Efforts to Ensure Seamless Service Coverage (1) HD Simulcast with PLP Automatic Switching

Seoul Daejeon Daegu Busan Terrestrial UHD Coverage of Korea 1 2 3 4 5 6 Efforts to Ensure Seamless Service Coverage (2) Automatic Frequency Switching ATSC 3.0 Network User Device 5G Network Streams from broadcast Streams received through 5G Streams from broadcast Shaded Area (Tunnel/Underground) Streams received through 5G Seamless watching thanks to ATSC 3.0 and 5G hybrid reception ✓ TTA Korea Standard Completed on Service Following Technique (2020.12.) (3) Broadcast-Broadband Switching

(Future Plan) ATSC 3.0 for UHDTV at home + 5G-Broadcast for Smartphone Smartphone receives 5G-Broadcast signals UHDTV in the house receives ATSC 3.0 broadcast signals ATSC 3.0 & 5G Experimental Transmission Sites at Gam-Ak Smartphone equipped with a 5G chipset will become a “television set.” High-Power High-Tower Broadcasting based on 3GPP Release 16

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