Link Layer Packet Segmentation for Hybrid IP and MPEG-2 TS Broadcast
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Solution Overview
Problem
The transition from conventional MPEG-2 TS to IP-based broadcast systems is time-consuming, necessitating a hybrid system that supports both IP and MPEG-2 TS to facilitate the evolution of digital broadcast technologies.
Innovation Solution
A method for transmitting broadcast signals by generating input packets, creating link layer packets with headers containing packet type and configuration information, and segmenting packets to enhance data transfer efficiency and robustness, allowing for seamless integration of IP and MPEG-2 TS in a next-generation broadcast system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional broadcast system using MPEG-2 TS is completely converted into an IP broadcast system, then data transfer efficiency and robustness are improved, but the transition takes a significant long time
Solution Approach 1:
The patent segments the broadcast system into multiple operational modes (IP broadcast mode and MPEG-2 TS broadcast mode) that can operate simultaneously. The link layer packet structure is segmented to include separate fields for packet type information and packet configuration information, allowing the system to handle different packet types through a unified interface without requiring complete system conversion.
Solution Approach 2:
The patent creates a universal link layer packet structure that can accommodate both IP packets and MPEG-2 TS packets. The packet type information field and packet configuration information field enable a single link layer to perform multiple functions - supporting both IP-based and MPEG-2 TS-based broadcast operations, thereby eliminating the need for time-consuming complete conversion.
2Adaptability or versatility
If a hybrid broadcast system supports both IP and MPEG-2 TS simultaneously, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a link layer as an intermediary between the physical layer and upper layers (IP layer and MPEG-2 TS layer). This link layer acts as a mediator that unifies the handling of different packet types through standardized packet type information and packet configuration information fields, reducing the complexity that would otherwise arise from direct multi-layer integration.
Solution Approach 2:
The patent uses parameter changes in the packet header structure to achieve adaptability. By changing the packet type information field and packet configuration information field values, the system can dynamically adapt to handle different packet types (IP or MPEG-2 TS) through the same link layer mechanism, avoiding the need for complex conditional processing logic.
3Productivity
If packets are segmented to enhance data transfer efficiency, then data transfer efficiency is improved, but packet processing complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-defining the packet structure with dedicated packet type information and packet configuration information fields before data processing occurs. This preliminary structuring simplifies subsequent packet processing by providing clear identification and configuration data, reducing the complexity that would otherwise arise from analyzing and reconfiguring packets during transmission.
Data Source
AI summary
Provided is a method for transmitting a broadcast signal. The method includes generating a plurality of input packets including broadcast data, generating at least one link layer packet using the input packets, wherein a header of the link layer packet includes packet type information and packet configuration information, the packet type information indicates a type of an input packet included in a payload of the link layer packet, and the packet configuration information indicates a payload configuration of the link layer packet, generating a broadcast signal using the link layer packet, and transmitting the broadcast signal.