ADVANCED EMERGENCY ALERTING RICH CHERNOCK MAY 16-17, 2017
What is Advanced Emergency Alerting? AEA is a facility in ATSC 3.0 to send urgent information A new way to present alerts and other critical public info Supplements, enhances, but doesn t necessarily replace EAS Possibility of geo-targeting to narrow areas, or even specific receivers For receivers that know where they are Possibility of targeting (and encrypting) messaging for groups (first responders, gov t, business )
What is Advanced Emergency Alerting? Direct interaction between the TV station and the TV receiver On-screen icons/prompts/summaries Detailed and targeted info Accompanying multimedia and live media User selection of preferences (language, types of alerts to display ) Possibility of TV receiver wake up for the most urgent alerts
Opportunity for Broadcasters Provide a more robust and reliable public warning and safety information communications system..independent of cellular network congestion Leverage broadcaster s major role as public information provider with disaster-resistant facilities Offload data and video traffic during times of emergency to preserve LTE for what it does best point-to-point voice communications
Opportunity for Broadcasters Enhance the station s brand for weather, essential information and public service in times of emergency Provide a pipeline for extensive information beyond simple text, for disaster preparation and recovery in addition to acute warnings Create public policy support for transitioning to ATSC 3.0 and unlocking mobile devices for broadcast TV reception
Advanced Emergency Alerting within ATSC 3.0 Key components supporting Advanced Emergency Alerting are found within the following ATSC 3.0 Standards: A/321 System Discovery and Signaling A/324 Scheduler/Studio to Transmitter Link A/331 Signaling, Delivery, Synchronization and Error Protection A/336 Content Recovery in Redistribution Scenarios A/338 Companion Devices A/342 Audio A/344 Application Runtime Environment
A/321 - Wakeup Function A/321 describes the Bootstrap which is the initial discovery and entry point in the ATSC 3.0 waveform Bootstrap is the most robust part of the transmission signal Bootstrap contains 3 symbols each with 8 bits Wakeup field contains two bits one each in Symbol 1 & Symbol 2 Two bits = 4 wakeup states one negative and 3 positive Change in state is what matters Designed to avoid nuisance factor & extend battery life
A/331 Signaling Wakeup and Alerting Content A/331 defines the service signaling and IP delivery of a variety of services/content Advanced Emergency Alerting is one of those IP services (along with electronic service guides, app-based services, linear audio-video services, and linear audio services). The Advanced Emergency Alerting Table (AEAT) is one instance of LLS info. The AEAT can contain one or more AEA messages. The AEA message format is XML based for ATSC 3.0 urgent messages -emergency alerts, plus restricted messages to closed groups. The AEA was designed to handle the unique content and alert message formats in the United States, Canada, Mexico, Caribbean and other ATSC countries. It supports a wide range of multimedia content, including cached or live media, multiple languages, and features useful for app developers.
Advanced Emergency Alert Table AEAT contains the elements and attributes of the alerting messages AEAT elements and attributes can be further defined by code values Who gets it When Alert Summary Where Alert Narrative Live Media Media Resources
What is Advanced Emergency Alerting? Where does the content come from? Remember its not just EAS! IPAWS CAP converted to AEA Broadcast EAS converted to AEA Other sources converted to AEA Station could create their own AEA bulletins Possibly allow public safety agencies to initiate AEA directly
What is Advanced Emergency Alerting? Where does the multimedia come from? Provided by the alert or message originator Station resources Third party sources
Overview of National Emergency Alerting Broadcast EAS (FSK + audio)
AEA Content Sources Alert Messages from Various Public Agency Sources AEA Content Manager DTV Transmission System AEA MF XML Messages Library Files Graphic Files HTML Pages Video Clips AEA MF XML Messages ATSC 3.0 Advanced Emergency Alert System Note: Resides within Signaling & Announcement Server NRT File Content Live Streams ATSC 3.0 Content Scheduler ATSC 3.0 Transmission System
AEA Content Sources TV Station Graphic Systems Graphic Content Files from Local or External Sources Weather AEA Content Manager Radar Systems Library Files ATSC 3.0 Advanced Emergency Alert Graphic Files System HTML Pages Hyperlinks to Internet Content Electronic Still Camera Video Clips AEA MF XML Messages Note: Resides within Signaling & Announcement Server DTV Transmission System NRT File Content Live Streams ATSC 3.0 Content Scheduler ATSC 3.0 Transmission System
EXAMPLES AEA Content Sources Prepared and Archived Rich Media Alert Supporting Content` AEA Content Manager DTV Transmission System What To Do In Preparation For A Specific Type of Emergency Evacuation Route Maps How To Recover After An Event Library Files Graphic Files HTML Pages Video Clips AEA MF XML Messages ATSC 3.0 Advanced Emergency Alert System Note: Resides within Signaling & Announcement Server NRT File Content Live Streams ATSC 3.0 Content Scheduler ATSC 3.0 Transmission System
AEA Content Sources SNG News Copter Tower Camera ENG Traffic Cameras Live Studio Video Clips from Various Sources AEA Content Manager Library Files Graphic Files HTML Pages Video Clips AEA MF XML Messages ATSC 3.0 Advanced Emergency Alert System Note: Resides within Signaling & Announcement Server DTV Transmission System NRT File Content Live Streams ATSC 3.0 Content Scheduler ATSC 3.0 Transmission System
Digital Emergency Alert Banner as Displayed On Small Screen
Rich Media Content Guide Displayed on Small Screen
Rich Media Displayed on Large Screen
Example of Graphic Content
Example of Graphic Content
Example of Graphic Content
Implementation How can stations implement ATSC 3.0 AEA?
ATSC 3.0 Station Architecture with AEA External Rich Media Stationgenerated AEA message Station Rich Media Video Clips Graphics Library files ALERT SOURCES FEMA IPAWS National Weather Service State Agencies EAS CAP AEA App Server & Messaging Platform EAS AEA CAP EAS unit Content Mgmt Server AEA app generator AEA messager ATSC 3.0 Signaling & Scheduling Audiences County & Local Agencies A/V Content EAS ATSC 3.0 Transmission System Authorities TV Station
ATSC 3.0 Station Architecture with AEA External Rich Media Stationgenerated AEA message Station Rich Media Video Clips Graphics Library files ALERT SOURCES FEMA IPAWS National Weather Service State Agencies EAS CAP AEA App Server & Messaging Platform EAS AEA CAP EAS unit Content Mgmt Server AEA app generator AEA messager ATSC 3.0 Signaling & Scheduling Audiences County & Local Agencies A/V Content EAS ATSC 3.0 Transmission System Authorities TV Station
ATSC 3.0 AEA Test Kit basic elements Live alert content External Content Station Content Multiple configuration options IP IP & RF Live encoding Live transmission DASDEC-II AEA App Server EASnet -AEA DASDEC-II Emergency Messaging Platform: CAP/EAS monitoring, EA aggregation, content management, AEA message production and management, media store & forward. NRT Media MPEG DASH EASnet-PureCAP Triveni Digital GuidebuilderXM: encapsulation, signaling & announcement into ATSC 3.0 stream Triveni Digital StreamScopeXM MT: ATSC 3.0 stream analyzer
AEA Receiver Applications ATSC 3.0 fixed, portable & mobile receivers benefit from full AEA capability. 27
A/338 Emergency Messages on Companion Devices A/338 supports the capability of communication between primary ATSC 3.0 receiving devices (TV receivers) and companion viewing devices such as a tablet or smartphone IP messaging linked by WiFi, Bluetooth or similar communication methods AEA messaging and media are supported
AEA Over the Air -Gateway Non-ATSC 3.0 devices could be served by an ATSC 3.0 Home Gateway device Gateway incorporates an ATSC 3.0 receiver and transcoding capability combined with WiFi It could be connected to ATSC 1.0 devices via HDMI cable or home network Wi-Fi ( classic EAS on screen display) Next gen AEA alerts could be served to non-atsc 3.0 devices as IP via the Gateway Tablets, laptops, smartphones Other Smart Home gear Conversion for 1.0 receivers -Loses AEA, but still has EAS AEA content OTT IP apps
The Players (alphabet soup) ATSC core standards ATSC AEAI-Team -implementation recommendations AWARN coalition doing outreach and advocacy Manufacturing community building the core systems FCC greenlighted voluntary implementation of ATSC 3.0 and, of course, the TV broadcast community
Questions? THANKS TO JAY ADRICK AND ED CZARNECKI FOR THE LOAN OF CHARTS RCHERNOCK@TRIVENIDIGITAL.COM WWW.TRIVENIDIGITAL.COM
ADVANCED EMERGENCY ALERTING RICH CHERNOCK MAY 16-17, 2017