Traffic Information System Location-Based Data Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current traffic information systems face data rate limitations and high communication costs due to the transmission of large amounts of irrelevant traffic information over wireless interfaces, particularly in systems using GPRS-type wireless links.
Innovation Solution
The system optimizes data transmission by filtering and compressing traffic information data based on the mobile device's current location, using a host server to extract relevant data from updated standard traffic information files, and partitioning data into geographic zones, eliminating irrelevant information, and encoding data in a binary format to fit within the Internet's Maximum Transmission Unit (MTU) size, reducing overheads and communication costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard traffic information files are transmitted over wireless interface, then traffic information is provided to mobile device, but data rate limitations and communication costs increase
Solution Approach 1:
The host server extracts only the relevant subset of traffic information data from the complete standard traffic information files based on the mobile device's current location, eliminating irrelevant data before transmission over the wireless interface
Solution Approach 2:
The traffic information data is segmented into geographic zones with each zone containing only data relevant to that specific area, allowing selective transmission of only the zone containing the mobile device's current location
2Loss of information
If complete traffic information files are transmitted, then all traffic data is available, but transmission time and data volume increase
Solution Approach 1:
Different parts of the traffic information system serve different functions: the host server performs comprehensive data extraction and filtering, while the mobile device receives only locally relevant information, optimizing the distribution of processing quality across the system
3Loss of energy
If traffic information is filtered by location, then relevant information is transmitted, but processing complexity increases
Solution Approach 1:
The host server acts as an intermediary between the traffic information source and the mobile device, performing the complex filtering, extraction, and optimization operations centrally, thereby simplifying the mobile device's processing requirements while maintaining communication efficiency
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Method and system of traffic information comprising a mobile device (1 ) connected to a connected host server (2) via a wireless network (4), wherein said host server (2) is adapted to download updated standard traffic information xml files (6) from traffic information server (3) connected to the Internet (5), wherein the method comprises the steps of identifying the current GPS location of the mobile device and transmitting said current GPS location to the host server, defining a relevant area surrounding said current GPS location of the mobile device, extracting, from updated standard traffic information xml files, road segments totally or partially included in said relevant area, preparing and compressing a relevant subset of traffic info data, transmitting it to the mobile device, processing said subset of traffic info data in the mobile device to display traffic information.