Vehicle Communications Server for Secure Mobile Network Access
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Solution Overview
Problem
Existing communications systems for land vehicles do not effectively enable personal networks to access multimedia services via packet mode mobile networks, particularly in motor vehicles, and lack secure access control for public use, with prior solutions integrating access points into mobile phones and providing static local networks.
Innovation Solution
A communications system that connects a personal area network (PAN) in a vehicle to a mobile communications network using wireless means, allowing multiple terminals to access multimedia services simultaneously without direct mobile network access, with a connection server managing both internal and external connections, and utilizing Bluetooth technology for terminal interconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mobile terminal integrates both Bluetooth radio module and GSM/GPRS radio module to provide network access functions, then the terminal can directly access mobile networks and provide services, but the terminal complexity increases and the device becomes less adaptable to different vehicle network configurations
Solution Approach 1:
The system separates the network access function from the terminal devices. The server (fixed or mobile) integrates the GSM/GPRS radio module and provides network access, while terminal devices only need Bluetooth interfaces. This segmentation allows terminals to remain simple while still achieving network access through the server gateway.
Solution Approach 2:
The server acts as an intermediary between the Bluetooth terminal devices and the GSM/GPRS mobile network. The server's radio module communicates with the mobile network, while the server also communicates with terminals via Bluetooth, mediating all network access requests and translating between the two protocols.
2Adaptability or versatility
If multiple terminals are interconnected via Bluetooth piconet to access mobile networks, then service availability increases, but secure access control and resource management become more difficult
Solution Approach 1:
The server acts as a security intermediary that controls all access to the mobile network. It manages authentication, authorizes service access, and controls resource allocation for each terminal. This centralized control through the server maintains security while allowing multiple terminals to access services simultaneously.
Solution Approach 2:
The server implements feedback mechanisms to monitor and control terminal access to mobile network resources. It tracks resource usage, manages connection states, and dynamically controls which terminals can access which services based on available resources and security policies.
3Productivity
If terminals connect directly to mobile networks individually, then each terminal has independent access, but network resource consumption increases and service efficiency decreases
Solution Approach 1:
The system merges multiple terminal connections through a single server gateway to the mobile network. Instead of each terminal establishing separate GSM/GPRS connections, all terminals share the server's network connection, consolidating network resource usage and improving overall service efficiency.
Solution Approach 2:
The server provides universal network access services to multiple different terminal types simultaneously. It handles various Bluetooth protocols and translates them to appropriate GSM/GPRS communications, allowing diverse terminals to share network resources efficiently through a single multi-functional gateway.
Data Source
AI summary
A communications system for land vehicles usable in the field of radio communications with any electronic data processing equipment connected to a mobile telecommunications network. The communications system enables the connection of a communication terminal (TP_i) to a mobile communications network (2) from a vehicle (1) of the kind including a local network (PAN) linked to the vehicle, and a server for connecting said local network to the communications network (GPRS, UMTS). The local network (3) provides a resource (Cext) for connecting a requesting communications terminal (TP_k) and the mobile communications network (2), and resources (Cint) for setting up a connection between two mobile terminals (TP_i, TP_j) connected to the local network (PAN) linked to the vehicle.