ATSC 3.0 Receiver Switching Across Broadcast Boundary Regions
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Solution Overview
Problem
ATSC 3.0 receivers face challenges in multi-frequency networks where they cannot fallback to a second broadcast frequency due to unmet quality metrics, leading to reception issues when moving out of range or encountering terrain obstructions, resulting in degraded service.
Innovation Solution
Implementing a method and apparatus that allows ATSC 3.0 receivers to switch between over-the-air (OTA) and wireless transceivers (such as 5G, satellite, and Wi-Fi) based on signal quality conditions, ensuring seamless service continuity by presenting the DTV service from the highest quality source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver scans for duplicate services on second broadcast frequencies in boundary regions, then service continuity may be improved, but reception quality deteriorates when the second frequency service does not meet quality metrics
Solution Approach 1:
The patent introduces an intermediary selection mechanism that evaluates multiple service sources (primary OTA frequency, secondary OTA frequency, and internet/OTT sources) based on quality metrics. When the primary service degrades, the system uses quality-based selection to determine whether to switch to a secondary broadcast frequency or fall back to internet-delivered content, ensuring that fallback options are only used when they meet acceptable quality thresholds.
2Reliability
If the receiver switches to a second broadcast frequency when primary service degrades, then service continuity is maintained, but the quality of service may be worse than the current degraded service
Solution Approach 1:
The system continuously monitors quality metrics of both primary and secondary service sources, using feedback loops to determine when switching is appropriate. The quality-based selection mechanism compares real-time quality measurements from multiple sources and only initiates frequency switching when the alternative source demonstrates superior quality, preventing degradation to inferior services.
3Manufacturing precision
If the receiver relies solely on OTA signals, then service quality is maintained when available, but service continuity is lost when moving out of range or blocked by terrain
Solution Approach 1:
The patent implements a dynamic service delivery system that adapts between different delivery mechanisms (OTA broadcast and internet/OTT delivery) based on real-time conditions. The receiver dynamically switches between broadcast and internet sources, adjusting the service acquisition strategy according to signal availability, mobility status, and quality metrics, thereby maintaining both quality and continuity.
4Reliability
If the receiver implements fallback to internet/OTT services when OTA degrades, then service continuity is maintained, but reliance on expensive OTT links increases
Solution Approach 1:
The system changes operational parameters by evaluating quality metrics and service conditions to determine the optimal delivery source. Quality-based selection uses parameter thresholds to decide when internet/OTT fallback is justified, preferring broadcast delivery when available and only transitioning to expensive OTT links when necessary to maintain service continuity, thereby optimizing cost-efficiency.
Data Source
AI summary
Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. A receiver, to automatically switch from presenting a service on a first frequency to a second frequency such as when a mobile receiver is moving through a boundary region between two broadcasters, can temporarily use a satellite link or 5G wireless telephony or other over the top (OTT) source to acquire a service until an OTA link satisfies quality requirements.