Train Wireless Communication System Centralized Router Control
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Solution Overview
Problem
Current wireless communication systems for moving vehicles, such as trains, face challenges with radio coverage, high maintenance costs, power consumption, and the inability to efficiently handle multiple frequency bands and new transmission solutions, leading to disrupted communication and costly upgrades.
Innovation Solution
A wireless communication system utilizing femtocells connected to a router and a femtocell controller, which communicates with a stationary communication server through an exterior mobile network, providing centralized control and supervision, reducing the need for multiple terminals and allowing for efficient voice and data communication, while minimizing power consumption and space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeater units are provided in each carriage to enable communication through metal shielded compartments, then communication coverage is improved, but system complexity and maintenance costs increase
Solution Approach 1:
The patent combines multiple repeater units into a single router device that can serve the entire train. This consolidation reduces the number of discrete components from many repeaters distributed across carriages to one centralized router, thereby maintaining communication coverage while reducing system complexity and maintenance burden.
Solution Approach 2:
The router is designed to handle multiple communication protocols and frequency bands simultaneously, making it a universal device that replaces the need for multiple specialized repeater units. This multi-functional approach allows a single device to perform the functions of many separate repeaters across different carriages.
2Adaptability or versatility
If repeater units handle both voice and data communication through multiple frequency bands, then communication capacity is improved, but the need for frequent upgrades and replacement increases
Solution Approach 1:
The router is designed as a universal communication device capable of handling multiple voice and data protocols across various frequency bands simultaneously. This multi-functional design allows the system to adapt to different communication standards without requiring hardware replacements, thereby reducing upgrade frequency while maintaining high communication capacity.
Solution Approach 2:
The system employs dynamic configuration capabilities where the router can adaptively adjust to different communication requirements and frequency bands through software updates rather than hardware changes. This dynamic adaptability allows the system to evolve with new communication standards without physical replacement of units.
3Reliability
If repeater units and mobile access routers are provided in each carriage, then communication coverage is improved, but power consumption and space requirements increase
Solution Approach 1:
The patent consolidates multiple repeater units and mobile access routers into a single router device located in one position on the train. This merging reduces the total power consumption from many distributed units to one centralized unit, while still providing communication coverage throughout the train through its multiple antennas and high-gain capabilities.
Solution Approach 2:
Instead of deploying physical repeater units in each carriage, the system uses a single router with multiple antennas that creates virtual coverage zones throughout the train. This copying approach allows the signal to be distributed to multiple locations without requiring physical presence of hardware in each carriage, thereby reducing power and space requirements.
4Reliability
If separate cooled compartments are provided for repeater units, then equipment protection is improved, but space requirements and installation costs increase
Solution Approach 1:
The patent consolidates multiple repeater units into a single router that can be installed in standard equipment compartments without requiring separate cooled spaces. This consolidation reduces the total space required from multiple dedicated cooled compartments to one standard mounting location, while the router's design handles thermal management efficiently.
Solution Approach 2:
The router is designed with improved thermal characteristics and lower power consumption compared to traditional repeater units, allowing it to operate in standard equipment compartments without requiring the extreme cooling environments previously necessary. This parameter change in thermal management enables installation in smaller, standard spaces.
Data Source
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AI summary
A wireless communication system for a moving vehicle, such as trains, is disclosed. The system comprises at least one router in the moving vehicle for receiving and transmitting wireless voice communication and data communication to and from a stationary communication server outside the moving vehicle through an exterior mobile network. Further, the system comprises at least one femtocell provided within the moving vehicle, and being connected to the router for wireless transferring of wireless voice communication and data communication between mobile terminals within the moving vehicle and the router, wherein the at least one femtocell is controlled by a femtocell controller directly or indirectly connected to the communication server outside the moving vehicle.