IP Broadcast Packet Filtering via LLS Header Signaling
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Solution Overview
Problem
In digital broadcasting using IP transmission systems, efficient filtering processing of packets is not established, making it difficult to acquire necessary information effectively.
Innovation Solution
A reception apparatus and method that perform filtering processing on packets using filtering information provided in the header of the packet, specifically in the LLS header, which includes compression, type, extended filter, and version information, allowing for efficient acquisition of signaling data such as SCD, RRD, and EAD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If filtering processing is performed on all packets in IP transmission system, then necessary information can be acquired, but processing time and system complexity increase
Solution Approach 1:
The patent applies preliminary action by embedding filtering information (such as service ID, event ID, region ID) directly into the packet header before transmission. This allows the reception apparatus to perform filtering operations based on pre-provided criteria without needing to analyze packet contents, significantly reducing processing time while maintaining accurate information acquisition.
Solution Approach 2:
The patent segments the filtering process by dividing packets into identifiable types based on header information (LLS packets, SCD packets, EAD packets, etc.). Each packet type can be filtered independently using specific criteria, allowing parallel processing and reducing overall processing time while maintaining precision.
2Productivity
If comprehensive filtering information is provided in packet headers, then efficient packet filtering is enabled, but header size and data structure complexity increase
Solution Approach 1:
The patent implements a universal filtering information structure that can handle multiple packet types (LLS, SCD, EAD, emergency alerts) using a common header format. The filtering information includes versatile fields such as service ID, event ID, region ID, and priority that can be applied across different packet types, reducing the need for separate filtering mechanisms for each packet type.
Solution Approach 2:
The patent uses parameter changes by providing filtering information in a standardized format with specific fields (service ID, event ID, region ID, priority) that can be easily parsed and compared. This structured approach allows efficient filtering without requiring complex data structures, as the filtering logic simply compares these standardized parameters against predefined criteria.
3Loss of information
If all signaling data is transmitted without filtering, then complete information is available, but data transmission volume and processing load increase
Solution Approach 1:
The patent extracts only the essential filtering information (service ID, event ID, region ID, priority) from the complete signaling data and places it in the packet header. This allows the reception apparatus to extract and process only the necessary packets based on its specific needs, reducing the volume of data that needs to be transmitted and processed while ensuring that complete information is available for the required services.
Solution Approach 2:
The patent performs preliminary filtering by embedding selection criteria in the packet headers before transmission. This allows the reception apparatus to perform filtering operations on received packets without needing to receive and process all signaling data, thereby reducing data transmission volume while maintaining information completeness for the required services.
Data Source
AI summary
The present technology includes a reception apparatus, including reception circuitry and processing circuitry. The reception circuitry is configured to receive a broadcast wave of digital broadcasting using an IP (Internet Protocol) transmission system. The processing circuitry is configured to perform filtering processing on a packet by using filtering information provided in a header of the packet. The packet is transmitted via the broadcast wave and carries low layer signaling (LLS) information in a payload of the packet.