MMT Header Format Reduces Transport Overhead
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Solution Overview
Problem
The existing MPEG-2 Transport System is inefficient for modern multimedia transport over the Internet, particularly due to excessive transport overhead when packetizing media data, as it was not optimized for recent IPTV broadcasting and Internet environments, leading to a need for a new multimedia transport standard that minimizes overhead.
Innovation Solution
A media data transport method where the Media Fragment Unit (MFU) header and M-Unit header share a single format, with all necessary header fields for operations not supported by RTP headers placed in the MMT Payload Format, reducing unnecessary information and overhead during packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If MPEG-2 TS standard is used for multimedia transport, then compatibility with existing systems is maintained, but transport overhead increases and efficiency decreases for modern Internet-based multimedia services
Solution Approach 1:
The patent changes the parameter structure of the packet header by eliminating redundant fields (such as continuity counters and unnecessary identification fields) and optimizing the remaining fields to be more compact. This parameter optimization directly reduces transport overhead while maintaining the ability to carry essential multimedia transport information, thereby improving transport efficiency for modern Internet-based services
Solution Approach 2:
The patent extracts and removes unnecessary information elements from the MPEG-2 TS packet structure that are no longer needed in modern multimedia transport over Internet protocols. By taking out these redundant components (such as excessive overhead fields and outdated synchronization mechanisms), the patent reduces payload overhead while preserving the core functionality needed for efficient multimedia delivery
2Adaptability or versatility
If multiple separate header formats (MFU header and M-Unit header) are used, then specific operations can be supported, but device complexity and overhead increase
Solution Approach 1:
The patent merges the previously separate MFU header and M-Unit header into a single unified header format. This unified header incorporates all necessary fields to support both Media Fragment Unit operations and M-Unit operations, eliminating the need for multiple separate header structures. The merger reduces header complexity and encoder device complexity while maintaining full operational capability through a single versatile header design
Solution Approach 2:
The unified header format is designed to be universal, capable of supporting multiple operations (both MFU and M-Unit operations) through a single structure. By making the header multi-functional with appropriate field configurations, the patent eliminates the need for separate specialized headers, thereby reducing complexity while preserving adaptability and versatility for different transport scenarios
Data Source
AI summary
Provided is a method for transmitting packet-based media data having a header in which an overhead is minimized. A method for media data transmission may comprise the steps of: encapsulating media data to allow a media fragment unit (MFU) header and an M-unit header to share one format; allowing an MMT payload format to include a header field for an operation which is not supported by an RTP header, and transferring the encapsulated media data from a specific entity to another entity; and controlling the transfer of the media data. Therefore, a transmission overhead is minimized, so that it is possible to efficiently transmit media data.