ATSC 3.0 Satellite Delivery With Device-Specific Error Protection
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Solution Overview
Problem
The challenge of delivering ATSC 3.0 formatted signals efficiently and flexibly, particularly for point-to-multi-point distribution, is hindered by the need for fiber infrastructure that is often not conveniently located for optimal tower placement, and existing systems lack support for enhanced mobile and fixed device capabilities, interactive services, and robust two-way communication.
Innovation Solution
A satellite-based content delivery system using ATSC 3.0 transmitters and integrated satellite receivers, employing DVB-S2 carriers and OFDM, supports multiple channels with varying error protection and resolution for mobile and fixed devices, and includes a back channel for two-way communication via 5G cellular, enabling interactive services and localized notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fiber infrastructure is used for signal delivery, then delivery reliability is improved, but ease of installation and adaptability deteriorate due to inconvenient location for optimal tower placement
Solution Approach 1:
The patent introduces a satellite as an intermediary medium to deliver ATSC 3.0 signals. Instead of relying on ground-based fiber infrastructure that requires convenient tower placement, the satellite acts as a mediator that can transmit signals from remote locations to distributed receivers, eliminating the need for extensive fiber deployment while maintaining signal delivery reliability.
2Device complexity
If single encoding mode is used for all channels, then device complexity is reduced, but adaptability to different device types deteriorates
Solution Approach 1:
The patent applies different encoding parameters to different channels within the same transport stream. Mobile device channels use higher error protection with lower resolution, while fixed device channels use less error correction with higher resolution. This local differentiation of quality parameters allows a single system to adapt to multiple device types without requiring separate encoding systems.
Solution Approach 2:
The system dynamically adjusts encoding parameters based on the intended device type and transmission conditions. The ability to vary error protection levels and resolution per channel allows the system to adapt in real-time to different reception environments, improving versatility while maintaining manageable system complexity through standardized ATSC 3.0 frameworks.
3Adaptability or versatility
If satellite-based delivery is used, then adaptability and tower placement flexibility are improved, but signal delivery reliability may deteriorate due to atmospheric interference
Solution Approach 1:
The patent applies error protection mechanisms in advance to counteract potential atmospheric interference. By incorporating forward error correction and redundant encoding before transmission, the system prepares for and cushions against signal degradation caused by rain, clouds, or other atmospheric conditions, maintaining reliability despite the inherent vulnerabilities of satellite transmission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides efficient delivery of ATSC 3.0 signals to both mobile and fixed devices with enhanced features like interactive services and localized emergency notifications, overcoming the limitations of ground-based fiber infrastructure and supporting optimal tower placement.
Implementation Method 1
encapsulating the ATSC 3.0 MPEG TS video feed into a DVB packet structure to be modulated onto a DVB-S2 carrier
Implementation Method 2
sending the encapsulated ATSC 3.0 MPEG TS video feed via satellite over the DVB-S2 carrier to multiple satellite receivers at distributed locations
Implementation Method 3
receiving the encapsulated ATSC 3.0 MPEG TS video feed at the multiple satellite receivers at distributed locations
Implementation Method 4
The transmission of the ATSC 3.0 MPEG TS video feed to the ATSC 3.0 end user devices employs Orthogonal Frequency-Division Multiplexing (OFDM)
Data Source
AI summary
A system includes one or more processors and a memory device storing a set of instructions that, when executed by the one or more processors, causes the system to: receive a ATSC 3.0 MPEG TS video feed via satellite over DVB-S2 at a satellite receiver at the remote location, the satellite receiver being associated with an ATSC 3.0 transmitter; and transmit the ATSC 3.0 MPEG TS video feed to ATSC 3.0 end user devices. The ATSC 3.0 MPEG TS video feed transmission is a multi-cast transmission with variable modulation encoding that includes multiple channels in a same transport stream. One channel of the multiple channels is encoded with more error protection and less resolution for transmission to mobile devices and another channel in the multiple channels, which may have the same content is encoded with less error correction and higher resolution for fixed devices.