Broadcast Signal Transmission via Data Pipe Segmentation
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Solution Overview
Problem
Digital broadcast systems face challenges in data transmission efficiency, robustness, and network flexibility, especially for mobile reception equipment, due to the large amounts of data and varying service requirements.
Innovation Solution
An apparatus and method for transmitting and receiving broadcast signals that includes an input formatting module for de-multiplexing and error correction, a frame building module for generating signal frames, and OFDM modulation, along with signaling generation for Physical Layer Signaling (PLS) information, which also compresses headers and recombines fragmented packets to enhance transmission efficiency and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If digital broadcast signals transmit large amounts of video/audio data and additional services, then service quality and functionality are improved, but data transmission efficiency and network robustness deteriorate
Solution Approach 1:
The patent segments the broadcast data stream into multiple Data Pipes (DPs), each carrying different types of data (video, audio, additional services). This segmentation allows independent optimization of each pipe's transmission parameters, improving overall transmission efficiency while maintaining high data volume capacity.
Solution Approach 2:
The patent dynamically changes transmission parameters including modulation schemes, coding rates, and resource allocation based on channel conditions and service requirements. This enables efficient adaptation to varying data loads and channel states, maintaining high transmission efficiency despite large data volumes.
2Quantity of substance
If digital broadcast signals include HD images, multi-channel audio and additional services, then service quality is improved, but transmission robustness deteriorates
Solution Approach 1:
The patent implements forward error correction (FEC) coding and redundancy mechanisms beforehand to cushion against potential transmission errors. This pre-protection ensures robustness even when transmitting large amounts of data that are more susceptible to errors.
Solution Approach 2:
The patent applies different robustness levels to different Data Pipes based on their service requirements. Critical services like audio receive higher protection, while less critical additional services receive lower protection, optimizing overall robustness for the given data volume.
3Adaptability or versatility
If the system supports mobile reception equipment with varying service requirements, then network flexibility is improved, but transmission efficiency and robustness deteriorate
Solution Approach 1:
The patent implements dynamic resource allocation and adaptive modulation where transmission parameters are continuously adjusted based on mobile receiver conditions, service requirements, and channel quality. This dynamic adaptation maintains high transmission efficiency across diverse flexible service scenarios.
Solution Approach 2:
The patent creates a universal transmission framework that can accommodate multiple service types (HD video, multi-channel audio, additional services) and reception conditions (fixed, mobile, indoor) through a single adaptable system architecture, maintaining efficiency across all use cases.
4Adaptability or versatility
If the system accommodates mobile reception equipment with varying service requirements, then network flexibility is improved, but transmission robustness deteriorates
Solution Approach 1:
The patent dynamically adjusts robustness parameters such as FEC rate and modulation depth based on mobile reception conditions and service requirements. This dynamic adjustment maintains high robustness when needed while preserving network flexibility for varying services.
Solution Approach 2:
The patent applies differentiated robustness protection to different Data Pipes and services based on their specific requirements and the reception conditions, ensuring critical services maintain high robustness while less critical services use lower robustness, optimizing overall system flexibility and reliability.
Data Source
AI summary
An apparatus for transmitting a broadcast signal is introduced. The apparatus for transmitting a broadcast signal according to the present invention includes: an input formatting module configured to de-multiplex an input stream into at least one Data Pipe (DP); a BICM module configured to perform error correction processing on data of the at least one DP; a frame building module configured to generate a signal frame including the data of the DP; an OFDM generation module configured to generate a transmission broadcast signal by inserting a preamble into the signal frame and performing OFDM modulation; and a signaling generation module configured to generate Physical Layer Signaling (PLS) information.