Broadcast Signal PLP Mapping for Robust Mobile Reception
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Solution Overview
Problem
Current digital broadcast systems face challenges in efficiently transmitting and receiving high-capacity data, particularly in mobile environments, due to limitations in data transmission efficiency, network robustness, and flexibility, especially when using conventional broadcasting systems without additional frequency allocation.
Innovation Solution
The system employs a method for transmitting and receiving broadcast signals using RF signals within conventional broadcasting systems, utilizing Physical Layer Pipes (PLPs) to differentiate and transmit data components separately, along with signaling information, allowing for flexible reception based on receiver characteristics and enhanced error correction through LDPC coding and MIMO systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional broadcasting systems are used without additional frequency allocation, then compatibility with existing systems is maintained, but data transmission efficiency and network robustness are insufficient for high-capacity digital broadcast signals
Solution Approach 1:
The transmission system is segmented into multiple PLPs (Physical Layer Pipes) that can be independently configured and transmitted. Each PLP can carry different types of data (video, audio, additional data) with different modulation and coding parameters, allowing efficient utilization of the broadcast spectrum while maintaining compatibility with conventional receivers that can decode at least one PLP.
Solution Approach 2:
The system adds a new dimension to conventional broadcasting by implementing multi-PLP structure with hierarchical service delivery. Basic services are delivered through one or more PLPs that all receivers must decode, while additional services are delivered through other PLPs that enhanced receivers can selectively decode, thereby increasing overall data transmission capacity without affecting basic service compatibility.
2Productivity
If multiple PLPs are transmitted to deliver different service components, then data transmission efficiency is improved, but device complexity increases for distinguishing and processing data for each component
Solution Approach 1:
Signaling information is transmitted in advance to indicate the mapping relationship between PLPs and service components. This preliminary action allows receivers to pre-configure their decoding processes according to the signaled information, reducing the complexity of real-time data processing and component identification without compromising transmission efficiency.
3Adaptability or versatility
If signaling information is transmitted to indicate mapping relationships between PLPs and service components, then flexibility in service delivery is improved, but loss of time occurs due to additional signaling overhead
Solution Approach 1:
Signaling information indicating the mapping relationship between PLPs and service components is merged with the broadcast signal transmission itself. The signaling information is embedded within the existing broadcast framework and transmitted concurrently with service data through the same PLPs, eliminating the need for separate signaling channels and thereby reducing time loss while maintaining flexibility in service delivery.
Data Source
AI summary
Disclosed is a broadcasting signal transmission device, a broadcasting signal reception device, and a method for transmitting/receiving a broadcasting signal using same. The method for receiving the broadcasting signal comprises the following steps: receiving the broadcasting signal, which includes a transmission frame, wherein the transmission frame includes a plurality of PLPs, which transmit components that constitute a broadcasting service, first signaling information and second signaling information, which include the signaling information of the plurality of PLPs, a first preamble signal, which has been signaled with a preamble format, and a second preamble signal, which has been signaled with pilot pattern information, wherein one of the plurality of PLPs is a base PLP, which includes a program number that corresponds to the broadcasting service and program map table information, which has been signaled with identifying information for each of the PLPs; demodulating the broadcasting signal based on the first and the second preamble signals; FEC decoding the demodulated broadcasting signal; and identifying a PLP group that includes the plurality of PLP from the FEC decoded broadcasting signal based on the first and the second signaling information, decoding at least one PLP of the identified PLP group, and providing the broadcasting service.