Preamble Symbol Location Indicator for Selective Frame Processing
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Solution Overview
Problem
Current broadcasting communication systems, such as DVB-T2, face challenges in efficiently processing and transmitting data for both fixed and mobile terminals, leading to increased power consumption and processing complexity due to the need to decode all frames to determine compatible data, especially in fringe areas with limited reception.
Innovation Solution
Incorporating a preamble symbol in each frame that includes location information about subsequent frames with the same type of data, allowing receiving apparatuses to selectively process only relevant frames based on this information, reducing power consumption by maintaining a stand-by state until compatible frames are processed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving apparatus decodes all frames to determine compatible data, then it can ensure complete data reception, but power consumption and processing complexity increase
Solution Approach 1:
The patent extracts only the necessary frames for processing by mobile terminals from the transmitted frame stream. The receiving apparatus uses the indicator field in preamble symbols to identify and extract only those frames containing mobile terminal data, avoiding the need to decode all frames. This selective extraction reduces power consumption while ensuring complete reception of compatible data.
Solution Approach 2:
The transmitting apparatus performs preliminary action by inserting indicator fields in preamble symbols that pre-identify which frames contain mobile terminal data. This allows the receiving apparatus to know in advance which frames are relevant, enabling selective processing without decoding unnecessary frames, thus reducing power consumption while maintaining reliability.
2Reliability
If the receiving apparatus processes all frames, then it ensures no compatible data is missed, but processing time and complexity increase
Solution Approach 1:
The receiving apparatus extracts only the frames relevant to mobile terminals based on the indicator field information in preamble symbols. By taking out only the necessary frames for processing, the system reduces processing time and complexity while ensuring that no compatible mobile terminal data is missed, as the indicator field accurately identifies all relevant frames.
Solution Approach 2:
The indicator field in the preamble symbol performs preliminary identification of mobile terminal data frames before the receiving apparatus begins processing. This preliminary action allows the receiver to skip irrelevant frames immediately, significantly reducing processing time while maintaining complete data compatibility assurance for mobile terminals.
3Productivity
If location information is inserted in preamble symbols, then frame selection efficiency improves, but transmission overhead increases
Solution Approach 1:
The patent applies local quality by inserting the indicator field only in specific locations (preamble symbols) where it is most useful for frame identification. Rather than adding location information throughout the entire frame structure, the indicator is placed locally in the preamble, providing efficient frame selection with minimal overhead. This localized approach optimizes productivity while keeping transmission overhead low.
Data Source
AI summary
A transmitting apparatus, a receiving apparatus and a method of controlling these apparatus are provided. The transmitting apparatus includes: a frame generator configured to generate a plurality of frames which include one or more kinds of data; a preamble symbol inserter configured to insert at least one preamble symbol in each of the plurality of frames, and insert, in a preamble symbol of a frame, location information about at least one frame, among the plurality of frames, which includes a same kind of data as a kind of data included in the frame; and a transmitter configured to transmit the plurality of frames in each of which the preamble symbol is inserted.