Hybrid Broadcast System Using ROUTE and PLP Segmentation
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Solution Overview
Problem
Current digital broadcasting systems face challenges in efficiently transmitting and receiving large amounts of data, particularly in ensuring robustness and flexibility of networks, especially for mobile devices, while supporting next-generation broadcast services that include HD images and multi-channel audio with supplemental services.
Innovation Solution
A hybrid broadcast system that combines terrestrial broadcasting with internet networks, utilizing protocols like MMT, ROUTE, and DASH for efficient data transmission and reception, with service layer signaling and bootstrapping mechanisms to enable flexible and robust delivery of next-generation broadcast services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If digital broadcast signals include larger amounts of video/audio data and supplemental data, then service quality and functionality are improved, but data transmission efficiency and network robustness deteriorate
Solution Approach 1:
The patent segments broadcast data into multiple physical layer pipes (PLPs) with different characteristics (robustness, data rate, modulation schemes). This allows high-volume data to be divided into manageable segments that can be transmitted through multiple parallel channels, improving overall transmission efficiency while maintaining service quality.
Solution Approach 2:
The patent introduces a new dimension of service layer signaling that operates independently from the traditional transport stream signaling. This additional signaling layer enables efficient management of large data volumes by providing service-specific control mechanisms, thereby improving data transmission efficiency without compromising service quality.
2Quantity of substance
If digital broadcast signals include larger amounts of video/audio data and supplemental data, then service quality and functionality are improved, but network robustness deteriorates
Solution Approach 1:
By segmenting data into multiple PLPs with different robustness characteristics, the system can allocate more robust transmission channels for critical data and less robust channels for non-critical data, maintaining overall network robustness while supporting large data volumes.
Solution Approach 2:
The patent changes transmission parameters dynamically by assigning different modulation schemes, coding rates, and robustness levels to different PLPs. This allows the system to adapt to varying network conditions and maintain robustness even when transmitting large amounts of data.
3Adaptability or versatility
If next-generation broadcast services are supported, then service capability is improved, but device complexity increases
Solution Approach 1:
The patent adds a service layer signaling dimension that operates above the traditional transport stream layer. This new dimension provides a structured framework for managing next-generation services, enabling enhanced service capability while organizing system complexity into manageable layers.
Solution Approach 2:
The service layer signaling mechanism is designed to be universal and adaptable to various next-generation broadcast services. By creating a multi-functional signaling framework that can handle different service types through a common structure, the patent improves service capability without proportionally increasing device complexity.
Data Source
AI summary
A method for transmitting a broadcast signal, includes receiving at least one input packet corresponding to at least one Movie Picture Experts Group-2 (MPEG-2) Transport Stream (TS) packet or at least one Internet Protocol (IP) packet in a link layer; and generating at least one link layer packet based on the at least one MPEG-2 TS packet or the at least one IP packet, wherein components for at least one service and service layer signaling information are carried in at least one Real time Object delivery over Unidirectional Transport (ROUTE) session, wherein the at least one ROUTE session includes at least one Layered Coding Transport (LCT) channel for each of the components and the service layer signaling information, and wherein the service layer signaling information includes a user service description fragment.