MMT Data Directory Signaling Reduction via MPU Alignment
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Solution Overview
Problem
Current MMT broadcast standards face inefficiencies in managing and transmitting data broadcasting files and transport control information, particularly in reducing the amount of information required for data directory and asset management, which can lead to increased bandwidth usage and management challenges.
Innovation Solution
The proposed solution involves a transmission and reception method where detailed information about files and items under a directory or MPU is omitted in the data directory and asset management tables, with an index item describing the necessary information, allowing for reduced data transport and efficient management by aligning the directory with the MPU as a transport unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If detailed information about files and items is included in the data directory and asset management tables, then complete information is provided for data broadcasting, but the amount of data transport control signaling increases, reducing available bandwidth for data assets
Solution Approach 1:
The patent extracts only the essential index information from the detailed file and item information, placing it in the data directory and asset management tables. The complete detailed information is obtained through separate retrieval processes, thus reducing the signaling volume while maintaining information accessibility.
Solution Approach 2:
The information structure is segmented into two parts: index information (stored in tables) and detailed information (retrieved separately). This segmentation allows the system to transmit minimal signaling data while preserving access to complete information through additional retrieval operations.
2Productivity
If the directory structure is aligned with the MPU transport unit, then data management efficiency is improved, but flexibility in independently managing content production and broadcast transport data is reduced
Solution Approach 1:
The data directory and asset management tables are designed to serve multiple functions: they provide both the index information needed for efficient MPU-aligned data management and the structural framework that maintains compatibility with independent content production and broadcast transport data management workflows.
3Adaptability or versatility
If transport control information is individually performed for directory configuration and broadcast transport data configuration, then independent management flexibility is maintained, but the complexity of managing multiple tables and information structures increases
Solution Approach 1:
The patent merges the data directory information and asset management information into a coordinated structure where the index items in one table reference and complement the information in the other table, reducing the overall complexity while maintaining independent management capabilities.
Data Source
AI summary
To reduce the transport amount of MMT data transport control signaling.Detailed information regarding files under a directory agreeing with an MPU, is not transported in a DDMT, and detailed information regarding items under the MPU agreeing with the directory is not transported in a DAMT. A file describing the detailed information regarding the items under the MPU agreeing with the directory, is described as one item and is passed to the MPU so that transport is performed. In addition, an MPU node descriptor indicating that the MPU agrees with the directory, is arranged into the DAMT so that matching with the directory is performed.