Broadcast Signaling Segmentation for Mobile DVB-T2 Capacity
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Solution Overview
Problem
The DVB-T2 standard does not adequately support mobile services that require lower bit rates with a greater number of physical layer channels, as conventional systems are limited in their ability to increase the signaling capacity to meet the demands of mobile devices within the available broadcast spectrum.
Innovation Solution
The solution involves partitioning static signaling data into multiple segments and distributing these segments across multiple data frames, allowing for increased capacity and support of additional physical layer pipes by separating and interleaving static and dynamic signaling components, and optionally adding P2 symbols to further enhance signaling capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the DVB-T2 standard is used to increase bit rate capacity, then the maximum bit rate increases by over 30%, but the number of physical layer channels remains insufficient for mobile services requiring lower bit rates with greater number of channels
Solution Approach 1:
The signaling data is segmented into multiple parts and distributed across different physical layer pipes. Instead of transmitting all signaling data through a single high-capacity pipe, the system divides the signaling information into segments that can be carried by multiple lower-capacity pipes, thereby increasing the number of supported physical layer channels while maintaining adequate signaling capacity
Solution Approach 2:
The patent introduces a new dimension to signaling transmission by utilizing time-domain spreading. Signaling data is distributed across multiple frames and multiple physical layer pipes, transforming a single-dimension (high bit rate) approach into a multi-dimensional approach that combines multiple lower bit rate channels to achieve both high overall capacity and increased channel diversity
2Loss of information
If signaling data is transmitted using conventional DVB-T2 methods, then the signaling capacity is limited, but the system complexity remains low
Solution Approach 1:
The patent applies preliminary action by performing signaling data segmentation and distribution planning before transmission. The system pre-configures which signaling segments are assigned to which physical layer pipes and frames, allowing for efficient resource allocation without requiring complex real-time decision-making, thus balancing enhanced signaling capacity with manageable system complexity
Data Source
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AI summary
Aspects of the invention provide apparatuses, computer media, and methods for supporting the broadcast of signaling data over a network. Signaling data is encoded, partitioned into M signaling segments, and distributed over M corresponding data frames. A data stream with the partitioned signaling data is transmitted through a digital terrestrial television broadcasting system, where the partitioned signaling data may include physical layer configurable data. The number of distributed signaling segments may be determined from a predetermined value or from a parameter contained in pre-signaling data. The number of physical layer pipes supported by signaling data may be increased by separating the static signaling part and the dynamic signaling part, dividing static signaling part into signaling segments, and interleaving the signaling segments over the data frames. The number of physical layer pipes can be further increased by adding at least one P2 symbol.