Broadcast Signal Transmission Multiplexing Data Services
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Solution Overview
Problem
Existing digital broadcast signal transmission technologies face challenges in efficiently transmitting large amounts of data, ensuring robustness, and flexibility, especially in mobile reception and indoor environments, due to limitations in data transmission efficiency and network robustness.
Innovation Solution
The development of an apparatus and method for transmitting broadcast signals that multiplexes data from multiple services in the time domain, allowing transmission through the same RF signal bandwidth, and processes data by components to control Quality of Service (QoS), using link and physical layer processing to generate and transmit broadcast signals efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If digital broadcast signals transmit large amounts of video/audio data and additional data, then service quality is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent segments data into different types (video data, audio data, additional data) and processes each type through appropriate coding and multiplexing methods. This segmentation allows efficient handling of large data volumes by applying optimized processing to each data category, thereby maintaining transmission efficiency while supporting high-quality digital broadcast services.
Solution Approach 2:
The patent introduces time-division multiplexing as an additional dimension for data transmission. By allocating different time slots to different data types and services, the system can transmit large amounts of data efficiently without compromising transmission speed, effectively resolving the contradiction between data quantity and transmission efficiency.
2Adaptability or versatility
If multiple broadcast services are transmitted through the same RF signal bandwidth, then network flexibility is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent merges multiple broadcast services into a single RF signal through time-division multiplexing. Different services are combined in the time domain with each service allocated specific time slots, allowing multiple services to share the same frequency resource efficiently. This merging approach maintains high data transmission efficiency while providing flexible multi-service support.
Solution Approach 2:
The patent employs periodic time-division multiplexing where different broadcast services are transmitted in alternating time slots. This periodic structure allows the system to flexibly allocate bandwidth to different services while maintaining efficient data transmission through structured, repeating transmission patterns that optimize resource utilization.
3Adaptability or versatility
If broadcast signals are transmitted to mobile reception equipment in indoor environments, then service coverage is improved, but robustness of transmission deteriorates
Solution Approach 1:
The patent implements dynamic adaptive modulation and coding that adjusts transmission parameters based on channel conditions. For mobile reception in indoor environments, the system dynamically selects appropriate modulation schemes and coding rates to maintain robust transmission despite varying signal quality, thereby extending service coverage while preserving transmission reliability.
Solution Approach 2:
The patent changes transmission parameters such as modulation order, coding rate, and guard interval length according to channel conditions and service requirements. By adapting these parameters dynamically, the system can provide robust transmission for mobile indoor reception while expanding service coverage to challenging environments.
Data Source
AI summary
A method of transmitting broadcast signals, includes link processing input packets to generate link layer packets, wherein a link layer packet of the link layer packets includes a header and a payload, wherein the payload of the link layer packet includes a segment of an input packet or concatenated input packets, wherein the header of the link layer packet includes a first field for identifying whether the payload includes the segment or the concatenated input packets, and wherein the header further includes a second field for identifying a number of the concatenated input packets and third fields that are inserted to the header in the same order as the concatenated input packets present in the payload in response to the first field representing that the payload includes the concatenated input packets; physical processing the link layer packets into the broadcast signals; and transmitting the broadcast signals.