TPEG Multicast IP Address for Universal Terminal Access
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Solution Overview
Problem
Current technologies for disseminating TPEG travel assistance data are limited by the need for DAB compatibility in terminals and proprietary links, which restrict access to a limited set of services, and lack global unification for IP-level signaling, making it difficult for non-compatible terminals and users to access comprehensive travel information.
Innovation Solution
A terminal with a unique multicast IP address for TPEG data broadcasting, allowing access to TPEG data via IP networks, enabling broadcasting in multicast form and transitioning between different IP networks, and providing language conversion for universal cross-border data access, independent of the terminal manufacturer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DAB broadcasting system is used for TPEG data transmission, then TPEG data can be transmitted via digital radio, but terminals must be DAB compatible which limits the range of accessible terminals
Solution Approach 1:
The patent applies universality by using a standard IP multicast address (224.0.0.1) that can be accessed by any terminal with IP network capability, regardless of DAB compatibility. This allows the same multicast address to serve multiple terminal types (DAB-compatible and non-DAB-compatible terminals alike), eliminating the limitation of terminal-specific protocols and achieving universal access to TPEG data broadcasting
2Adaptability or versatility
If proprietary links are used for TPEG data access, then manufacturer-specific services can be provided, but users are restricted to limited services and cannot access comprehensive travel information
Solution Approach 1:
The patent eliminates proprietary link restrictions by implementing a universal IP multicast approach where any terminal can subscribe to TPEG data using standard IP networking protocols. The solution uses public IP multicast addresses and standard IGMP subscription mechanisms, allowing users to access comprehensive travel information from multiple manufacturers and sources without being confined to manufacturer-specific proprietary systems
Solution Approach 2:
The patent introduces an intermediary layer (IP network infrastructure) that mediates between TPEG data sources and terminal receivers. This intermediary uses standardized IP multicast routing and subscription protocols to bridge the gap between diverse data sources and various terminal types, enabling universal access without requiring direct proprietary links between manufacturers and terminals
3Adaptability or versatility
If no global unification for IP-level TPEG signaling is implemented, then terminal independence is maintained, but it becomes difficult for users to access comprehensive travel information across different networks
Solution Approach 1:
The patent establishes global unification for IP-level TPEG signaling by assigning a universal multicast address (224.0.0.1) that functions across all IP networks regardless of location or operator. This single address serves as a universal subscription point for TPEG data, enabling terminals to access comprehensive travel information across different networks and borders without requiring network-specific configuration or multiple addresses
Solution Approach 2:
The patent changes the addressing parameter from manufacturer-specific or network-specific identifiers to a standardized IP multicast address parameter. This parameter change enables terminals to use the same subscription mechanism (IGMP join for 224.0.0.1) across different IP networks, achieving cross-network access while maintaining terminal independence and simplifying the subscription process
Data Source
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Figure 3
AI summary
The invention relates to a terminal for receiving TPEG data, including: a memory (23) storing a single static IP multicast address for broadcasting TPEG data; and a unit (21) for accessing a first IP network, wherein the access unit is capable of emitting a subscription request for said IP multicast address, and for receiving TPEG data or a link to TPEG data in response to the request.