Proactive Handover Controller for Wireless Connectivity in Transportation
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Solution Overview
Problem
Wireless devices in transportation deployments face unpredictable connection drops due to rapid environment changes and high signal-level fluctuations, making reactive hand-over of access points difficult in maintaining network connections.
Innovation Solution
A system with a wireless interface and handover controller that proactively identifies and switches between access points along a predetermined route or in a geographical region, using a route profile and hysteresis timer to manage signal strength and frequency changes, ensuring continuous network connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reactive hand-over functionality is used to switch access points when users travel out-of-range, then wireless devices can maintain connection by locating another access point, but rapid environment changes and high signal-level fluctuations cause unpredictable connection drops and make re-association difficult
Solution Approach 1:
The system performs preliminary actions by proactively identifying access points along a predetermined route before the device actually needs to hand over. The handover controller generates a route profile that pre-identifies suitable access points based on historical data and predicted trajectory, allowing the device to prepare for hand-over in advance rather than reactively searching when signal degrades, thus preventing connection drops in rapidly changing environments
2Duration of action of stationary object
If wireless devices switch access points frequently in transportation deployments to maintain connection, then connectivity can be preserved during movement, but the reactive nature of hand-over causes unpredictable drops and re-association difficulties
Solution Approach 1:
The handover controller proactively identifies access points along the predetermined route in advance, generating a route profile that lists suitable access points before hand-over is needed. This preliminary identification based on historical data and predicted trajectory allows the device to maintain connection continuity with reliable, predictable hand-overs rather than frequent reactive switching that causes connection drops
Solution Approach 2:
The system uses historical hand-over data and signal strength measurements as feedback to continuously improve route profile generation. By analyzing past hand-over successes and failures, the system refines its predictions of which access points will be suitable along the route, making hand-over decisions more reliable and reducing unpredictable connection drops in transportation deployments
Data Source
AI summary
The network communication system includes a wireless interface to exchange wireless signals during at least one network connection, and a handover controller that uses a route profile identifying access points distributed over a given route or region that are capable of supporting the network connection, and to handover the network connection between access points as the device travels along the given route or through a region according to the route profile.