Predictive Wireless Handover Using Context Signals
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Solution Overview
Problem
Conventional scanning and handover methods between wireless interfaces in Information Handling Systems (IHS) can take up to 10 seconds or more, often resulting in disconnections, which is inefficient and unreliable.
Innovation Solution
Implementing predictive scanning and handover techniques that use context information such as Received Signal Strength Indicator (RSSI), Time-of-Flight (ToF), user behavior, and posture to anticipate and switch to a secondary wireless connection before the primary connection is lost, thereby minimizing disconnections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional scanning and handover methods are used between wireless interfaces, then the system can maintain connection reliability, but the handover time increases to 10 seconds or more and disconnections occur
Solution Approach 1:
The system performs predictive scanning for alternative wireless connections before the current connection is actually lost. By using context information such as location data, signal strength trends, and historical patterns, the system identifies potential connection failures in advance and initiates scanning for backup connections proactively, enabling seamless handover without waiting for disconnection to occur
Solution Approach 2:
The system dynamically adjusts scanning behavior based on real-time context information. When indicators suggest an incoming connection loss (such as decreasing signal strength or entering areas with poor coverage), the system increases scanning frequency and priority for alternative connections. This dynamic adaptation allows the system to optimize handover timing and reduce disconnection intervals while maintaining normal operation during stable connections
2Speed
If the system scans for alternative wireless connections continuously, then handover speed improves, but energy consumption increases
Solution Approach 1:
Instead of continuous scanning, the system employs periodic scanning at strategically determined intervals. Context information such as location changes, signal strength variations, and movement patterns trigger scanning events only when connection loss is anticipated. This periodic approach maintains readiness for handover while significantly reducing energy consumption compared to continuous scanning
Solution Approach 2:
The system uses its own operational context (location, signal strength, movement patterns) to autonomously determine when scanning is necessary. By monitoring its own connection quality and environmental context, the system intelligently activates scanning only when needed, eliminating wasteful energy expenditure during stable connections while ensuring rapid handover capability when required
Data Source
AI summary
Systems and methods for predictive scanning and handover are described. In some embodiments, an Information Handling System (IHS) may include a processor and a memory coupled to the processor, the memory having program instructions stored thereon that, upon execution, cause the IHS to: receive context information; predict a loss of a first wireless connection based upon the context information; in response to the prediction, start scanning for a second wireless connection while maintaining the first wireless connection; and switch to the second wireless connection prior to losing the first wireless connection.