Baseband Frame Data Structure for Digital Broadcasting Overhead Efficiency
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Solution Overview
Problem
Current digital broadcasting standards, such as ATSC 1.0 and DVB-T2, face inefficiencies in overhead usage and complexity, particularly in their baseband frame structures, which can hinder the incorporation of new features and compatibility with both legacy and future standards.
Innovation Solution
A data structure is proposed with a header area and a payload area, incorporating signal fields that dynamically indicate the presence or absence of information fields, allowing for flexible insertion and extraction of necessary fields within the baseband frame, thereby improving overhead efficiency and reducing implementation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed baseband frame structure is used in current digital broadcasting standards, then the structure is simple and easy to implement, but overhead efficiency is poor and flexibility to incorporate new features is limited
Solution Approach 1:
The patent applies dynamics by making the frame structure configurable rather than fixed. The baseband frame can dynamically adjust its composition by including or excluding optional fields (such as private data fields, signaling fields, or padding fields) based on specific transmission requirements. This allows the frame structure to adapt to different broadcasting scenarios while maintaining a relatively simple core architecture.
Solution Approach 2:
The patent segments the baseband frame into mandatory fields and optional fields. The mandatory fields form the essential core structure, while optional fields can be selectively added or removed. This segmentation enables flexible configuration of the frame structure to optimize overhead efficiency and accommodate new features without fundamentally redesigning the entire frame format.
2Loss of energy
If all information fields are always included in the baseband frame, then the structure is complete and reliable, but overhead efficiency deteriorates due to unnecessary fields
Solution Approach 1:
The patent applies partial action by including only the necessary fields in each baseband frame rather than always including all possible fields. The frame structure can selectively include optional fields based on transmission requirements, thereby reducing overhead when certain fields are not needed while maintaining completeness when required.
Solution Approach 2:
The patent uses preliminary action through the use of signaling fields that indicate the presence or absence of optional fields before they appear in the frame. This allows the receiver to prepare for variable frame structures in advance, ensuring reliable parsing while optimizing overhead by knowing ahead of time which fields are present and which are absent.
3Adaptability or versatility
If the baseband frame structure is made highly flexible to accommodate future standards, then adaptability improves, but implementation complexity increases
Solution Approach 1:
The patent applies universality by designing a baseband frame structure that can serve multiple functions and accommodate both current and future broadcasting standards. The configurable nature of the frame, with its mandatory and optional fields, allows a single frame structure to adapt to different standards and requirements without requiring completely separate frame formats for each standard.
Solution Approach 2:
The patent uses preliminary action by incorporating signaling fields that provide advance information about the frame structure configuration. This allows receivers to be prepared for variable frame structures in advance, making implementation more manageable by providing foreknowledge of which fields are present, thereby reducing the complexity of parsing and processing.
Data Source
AI summary
Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.