MMT Payload Construction for Heterogeneous Network Transmission
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Solution Overview
Problem
MPEG-2 TS has limitations such as one-way communication, inefficiency in transmission due to fixed frame size, and generation of unnecessary overhead when using Internet Protocols, which hinder efficient multimedia service delivery in heterogeneous networks.
Innovation Solution
The MMT standard is introduced to facilitate efficient multimedia transmission by constructing a payload for multimedia frames, dividing data into media types, and combining header and data regions to support hybrid content and services over heterogeneous networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MPEG-2 TS is used for transmission, then reliable transmission in erroneous environment is achieved, but transmission efficiency deteriorates due to fixed frame size and unnecessary overhead
Solution Approach 1:
The patent segments the fixed MPEG-2 TS frame structure into flexible IP packets of varying sizes. By dividing the transport stream into smaller, adaptable packet units, the system can optimize transmission efficiency while maintaining reliability through proper segmentation and reassembly at the receiver端.
Solution Approach 2:
The invention introduces dynamic packet sizing and flexible frame structure that adapts to network conditions. Unlike the static MPEG-2 TS fixed frame size, the system dynamically adjusts packet dimensions and transmission parameters based on actual network status, thereby improving transmission efficiency without sacrificing reliability.
2Device complexity
If MPEG-2 TS with fixed frame size is used, then simple structure is maintained, but transmission efficiency deteriorates due to inability to adapt to variable network conditions
Solution Approach 1:
The patent implements dynamic adaptation mechanisms that allow the protocol to adjust to varying network conditions. The system dynamically modifies packet sizes, transmission rates, and routing decisions based on real-time network status, achieving high transmission efficiency while managing complexity through standardized adaptation layers.
Solution Approach 2:
The invention changes key transmission parameters such as packet size, frame structure, and protocol headers to optimize for different network conditions. By dynamically adjusting these parameters rather than maintaining fixed values, the system achieves superior transmission efficiency across diverse network environments.
3Reliability
If MPEG-2 TS is used for audio/video transmission, then specialized protocol benefits are achieved, but adaptability to heterogeneous networks deteriorates
Solution Approach 1:
The patent implements a universal protocol architecture that can handle multiple media types (audio, video, data) over heterogeneous networks. The system uses standardized IP-based transmission with adaptable payload structures that can carry different media formats, achieving both specialized audio/video transmission quality and broad network compatibility.
Solution Approach 2:
The invention introduces intermediary adaptation layers that translate between specialized audio/video requirements and general-purpose IP network protocols. These intermediary components maintain the reliability needed for audio/video transmission while enabling adaptability to various network types through standardized interface protocols.
4Device complexity
If one-way communication protocol is used, then simple protocol structure is maintained, but service interactivity deteriorates
Solution Approach 1:
The patent implements a universal communication framework based on IP protocols that supports both one-way and interactive communication modes. The system maintains protocol simplicity through standardized IP structures while enabling rich interactivity through application-layer protocols and services that operate over the IP foundation.
Data Source
AI summary
An apparatus and a method for transmitting multimedia data in a broadcast system are provided. A method for constructing a payload for a multimedia frame to be transmitted via a heterogeneous network, in a broadcast system that supports an Internet protocol-based multimedia service, includes dividing the data so as to transmit data of at least one media type and constructing a data region based on each datum of the divided data, constructing a header region including information on the state of the data contained in the data region and/or information on the data region, and combining the data region and the header region to construct a payload for the multimedia frame.