MMT to DASH Media Interoperability via MPD Extraction
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Solution Overview
Problem
Current multimedia transmission technologies, such as MPEG-2 TS, are inefficient for modern Internet-based multimedia services due to their lack of optimization for recent network environments, leading to issues like packet loss and inability to provide real-time streaming services over wireless networks with firewalls, and existing solutions like HTTP streaming face challenges in delivering high-quality content like UHD media.
Innovation Solution
The method involves generating and using MPD interoperability information to enable interoperability between MMT and DASH media, allowing for hybrid delivery over HTTP, where MPD information is extracted from MMT transport servers and used by portable terminals to play back MMT media as DASH media, facilitating seamless playback across different networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MPEG-2 TS is used for multimedia transmission, then compatibility with legacy systems is maintained, but efficiency in modern Internet-based multimedia services deteriorates
Solution Approach 1:
The patent introduces an interoperability layer that acts as an intermediary between MMT and DASH standards. This layer enables seamless conversion and compatibility between the two protocols, allowing legacy MMT systems to efficiently serve modern Internet-based multimedia services without sacrificing compatibility or performance
2Speed
If RTP is used for streaming service, then real-time transmission is achieved, but ability to operate behind firewalls deteriorates
Solution Approach 1:
The patent implements a universal playback mechanism that can handle multiple protocol types (MMT, DASH, HTTP-based streaming) within a single system. This multi-functionality allows the system to maintain real-time transmission capabilities while adapting to firewall restrictions by switching between protocols as needed
3Speed
If UDP is used for packet transmission, then transmission speed is improved, but packet loss and content loss deteriorate
Solution Approach 1:
The patent incorporates feedback mechanisms in the interoperability layer that monitor packet transmission status. When packet loss is detected, the system can request retransmission or switch to more reliable transmission modes, thereby maintaining high transmission speed while reducing content loss through active monitoring and correction
4Adaptability or versatility
If HTTP streaming is used for mobile communication terminals, then firewall compatibility is improved, but real-time playback capability deteriorates
Solution Approach 1:
The patent implements dynamic protocol adaptation that allows the system to switch between HTTP-based streaming and real-time protocols based on network conditions and terminal capabilities. This dynamic behavior enables firewall compatibility when needed while maintaining real-time playback capability when conditions permit
Data Source
AI summary
Disclosed is a method for linking MMT media and DASH media. A method for linking MMT media and DASH media comprises the steps of: generating MPD information by extracting an MPD linking information from a home media server, the MPD linking information, which has been transmitted from an MMT transmission server to an MMT, being information comparable to an MPD of DASH for interconnecting DASH and MMT; and transmitting the MPD information to a mobile terminal so that the mobile terminal can replay as DASH media by means of the MPD information.