Null Cell Number Signaling in ATSC 3.0 L1 Preambles
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Solution Overview
Problem
In broadcasting standards like ATSC 3.0, the reception apparatus faces a processing burden due to the complexity of L1 signaling, which requires significant computational resources for demodulation and parameter calculations.
Innovation Solution
The proposed solution involves a data processing apparatus that produces and processes signaling containing the number of Null cells within the physical layer frame's preamble, reducing the computational load on the reception side by transmitting this information rather than calculating it locally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception apparatus calculates the number of Null cells locally using L1 signaling, then the processing burden and computational resources increase, but the information accuracy is maintained
Solution Approach 1:
The patent extracts the Null cell number information from the complex L1 signaling calculation process and transmits it directly as dedicated signaling information. This separates the critical parameter (Null cell number) from the complex calculation process, allowing the reception apparatus to simply receive and use this pre-calculated value without performing complex computations, thereby reducing processing burden while maintaining information accuracy.
Solution Approach 2:
The transmission apparatus performs the Null cell number calculation in advance and includes it in the signaling information before transmission. By completing this calculation beforehand, the reception apparatus is relieved of the computational task, reducing its processing burden while still obtaining accurate Null cell number information for proper signal processing.
2Measurement precision
If the L1 signaling contains detailed parameters for demodulation, then the demodulation accuracy improves, but the signaling data size and processing complexity increase
Solution Approach 1:
The patent extracts specific critical parameters (such as Null cell number) from the comprehensive L1 signaling and transmits them as separate dedicated signaling information. This extraction reduces the overall signaling data size while ensuring that the most critical parameters for accurate demodulation are clearly and explicitly provided to the reception apparatus.
3Adaptability or versatility
If the reception apparatus performs complex calculations for parameter derivation, then the processing flexibility is maintained, but the processing time and energy consumption increase
Solution Approach 1:
The transmission apparatus performs parameter calculations including Null cell number determination in advance and includes these calculated values in the transmitted signaling. This preliminary action allows the reception apparatus to use these pre-computed values directly, reducing processing time and energy consumption while maintaining the ability to adapt to different transmission conditions through the signaling parameters.
Data Source
AI summary
The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced.A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0.