Wireless Device Scanning Modes for Power and Switching Trade-offs
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Solution Overview
Problem
Devices operating in wireless systems such as GSM, GERAN, and WLAN are not optimized for seamless operation across multiple systems, leading to inefficient power usage and suboptimal system switching.
Innovation Solution
Implementing a method with multiple scanning modes (high-scan, medium-scan, and low-scan) triggered by specific events, allowing devices to efficiently determine and switch between systems, optimizing power usage and performance by adjusting scanning frequencies based on device events like opening/closing the flip, keypad activity, and charger connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If continuous scanning of multiple wireless systems is performed, then system switching capability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic scanning at different intervals based on operational context. Instead of continuous scanning, the device performs scans at scheduled intervals (e.g., every T seconds) and adjusts these intervals dynamically. During stable operation, scanning occurs less frequently to conserve power, while during transition periods or when events occur, scanning frequency increases to enable timely system switching.
Solution Approach 2:
The scanning mechanism is made dynamic by adjusting scanning parameters based on device state and environmental conditions. The system transitions between different scanning modes (e.g., idle mode, active mode, transition mode) with varying scanning frequencies. This dynamic adaptation allows the device to maintain system switching capability while optimizing power consumption according to actual operational needs.
2Speed
If scanning frequency is increased to enable rapid system switching, then switching speed is improved, but power consumption increases
Solution Approach 1:
The patent employs periodic scanning with variable intervals to balance switching speed and power consumption. During normal operation, scans occur at extended intervals to save power. When triggering events occur (e.g., signal quality degradation, user actions), the system initiates more frequent scans to enable rapid detection and switching, thus achieving fast switching only when necessary.
Solution Approach 2:
The system performs preliminary scanning actions in advance of actual switching needs by monitoring trigger conditions. When certain events are detected (e.g., flip opened, keypad activity, charger connection), the system proactively increases scanning frequency, preparing for potential system switching before it becomes critical, thereby achieving rapid switching response without maintaining high scanning frequency continuously.
3Productivity
If device operates optimally in a single wireless system, then performance is improved, but adaptability to multiple systems deteriorates
Solution Approach 1:
The patent implements dynamic scanning mode selection that adapts to operational context. The device maintains optimal performance in the current system by using lower scanning frequencies during stable operation, while retaining the capability to rapidly detect and switch to alternative systems when needed. This dynamic approach allows the device to behave as if optimized for a single system during normal operation, yet remains adaptable to multiple systems when conditions change.
Data Source
AI summary
The techniques described increase efficiency and operation of a device operating in one or more communication systems. These embodiments provide a method for a device to perform selected scanning procedures of one or more communication systems based on the type of event detected by the device. One method includes detection of the opening or closing of the flip cover of the device and performing scanning as a result of detecting the event. Another method performs scanning in different modes such as high-scan, medium-scan and low-scan modes.