Broadcast Signal Layering for Robust Mobile Service Discovery
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Solution Overview
Problem
Digital broadcast systems face challenges in data transmission efficiency, robustness, and network flexibility, especially for mobile reception and indoor environments, due to the large amounts of data and varied services they need to handle.
Innovation Solution
A method and apparatus for transmitting broadcast signals using service layer signaling information and content components, processed through physical layer protocols like ROUTE or MMT, which include service list information, capability information, and URL signaling to enable efficient discovery and acquisition of broadcast services across different networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital broadcast signals transmit large amounts of video/audio data and additional services, then service functionality is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The broadcast signal is segmented into multiple layers including service list information, service layer signaling information, and content components. This hierarchical segmentation allows efficient processing and transmission of large amounts of data by organizing information into manageable units that can be transmitted and processed independently.
Solution Approach 2:
The patent introduces a multi-dimensional transmission approach by implementing both broadcast and broadband pathways. Service list information and signaling information are transmitted through broadcast, while content components can be delivered through broadband, creating a multi-dimensional data transmission architecture that improves overall efficiency.
2Adaptability or versatility
If digital broadcast systems handle varied services and large data amounts, then service diversity is improved, but network robustness deteriorates
Solution Approach 1:
The system transmits service list information and signaling information in advance through the broadcast pathway, preparing the receiver with necessary service discovery information before content delivery. This preliminary information provision cushions the system against potential broadband transmission failures and improves network robustness.
Solution Approach 2:
Service layer signaling information acts as an intermediary between service list information and content components. It provides capability information, location information, and URL signaling that mediates the interaction between the broadcast control channel and content delivery channels, ensuring robust service acquisition.
3Ease of operation
If digital broadcast systems support mobile reception equipment, then reception accessibility is improved, but transmission reliability deteriorates
Solution Approach 1:
The transmission system is segmented into a reliable broadcast control channel for signaling information and flexible content delivery channels. This segmentation allows mobile receivers to reliably acquire service information through broadcast while content can be adaptively delivered through multiple pathways including broadband, improving both accessibility and reliability.
Solution Approach 2:
The service layer signaling information provides universal capability information that enables receivers to adapt to different service types and delivery methods. This multi-functional signaling approach supports various reception scenarios including mobile, fixed, broadcast-only, and broadband-hybrid reception, improving transmission reliability across diverse environments.
Data Source
AI summary
A method for transmitting a broadcast signal according to an embodiment of the present invention comprises generating service layer signaling information for discovery and acquisition of a broadcast service and a content component of the broadcast service; generating service list information including for service list building and discovery of the service layer signaling information; and physical layer processing of the service list information, service layer signaling information, and content component.