Mobile Device Network Switching for Power Reduction
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Solution Overview
Problem
Mobile devices face battery drain issues due to high power consumption from various wireless communication modes, leading to frequent recharging and inconvenience to users, as existing methods primarily focus on Quality of Service rather than power consumption when switching between networks.
Innovation Solution
A method for mobile devices to estimate power consumption across different radio access technologies (RATs) and switch to networks with lower power consumption, using parameters like transmission levels, timing advance values, and signal strength, to optimize battery life by selecting the most power-efficient network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device uses high-power radio access technologies for better service quality, then the communication performance is improved, but the battery consumption increases
Solution Approach 1:
The patent implements dynamic network switching that adapts to changing conditions. The mobile device continuously monitors battery status, signal strength, and network availability, then dynamically selects between 3G/4G and WiFi networks. This dynamic adaptation allows the system to optimize between communication performance and power consumption based on real-time conditions, resolving the contradiction between maintaining reliable communication and reducing battery consumption.
Solution Approach 2:
The system changes operational parameters by switching between different radio access technologies (3G/4G versus WiFi) based on battery consumption thresholds and signal conditions. When battery levels drop below certain thresholds or WiFi signal strength exceeds minimum requirements, the system transitions to WiFi mode to reduce power consumption. This parameter change strategy enables the device to maintain acceptable communication performance while significantly reducing energy usage during low-power states.
2Duration of action of stationary object
If the mobile device frequently switches between networks to optimize power consumption, then the battery life is prolonged, but the network switching complexity increases
Solution Approach 1:
The system performs preliminary assessments before switching networks by evaluating WiFi signal strength, battery status, and network availability in advance. The mobile device continuously monitors WiFi signal strength and compares it against minimum thresholds before initiating a network switch. This preliminary action prevents unnecessary switching and simplifies the decision-making process by pre-evaluating switching conditions, thereby reducing the overall complexity of network management while extending battery life through informed switching decisions.
Solution Approach 2:
The system implements feedback mechanisms that continuously monitor battery consumption rates, signal strength, and network performance. Based on this feedback, the system adjusts its network selection strategy. When feedback indicates that WiFi provides sufficient signal strength at lower power consumption, the system switches to WiFi. This feedback-driven approach simplifies complexity by using clear performance metrics to guide switching decisions rather than requiring complex predictive algorithms.
3Use of energy by moving object
If the mobile device prioritizes power saving over service quality, then the battery consumption is reduced, but the communication quality may deteriorate
Solution Approach 1:
The patent introduces WiFi as an intermediary network that bridges the gap between high-power 3G/4G networks and power-saving requirements. When 3G/4G power consumption becomes excessive, the system transitions to WiFi as an intermediate solution that consumes less power while maintaining acceptable communication quality. This intermediary approach allows the device to reduce power consumption without directly sacrificing communication quality, as WiFi serves as a middle-ground option between high-performance and low-power modes.
Solution Approach 2:
The system strategically uses WiFi connections as temporary, lower-cost alternatives to 3G/4G networks during periods when power conservation is prioritized. Rather than permanently switching to lower-quality modes, the device can temporarily utilize WiFi for non-critical communications when battery conservation is needed, then return to 3G/4G when higher quality is required. This approach allows flexible trade-offs between power consumption and communication quality based on immediate needs.
Data Source
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AI summary
A power saving method for a mobile device in a wireless communication system is disclosed. The power saving method comprises obtaining a first parameter according to a first signal transmitted between the mobile device and a first network; estimating a first power consumption of the mobile device in the first network according to the first parameter and a first radio access technology (RAT) employed in the first network; determining whether the first network is suitable according to at least a comparison of the first power consumption with a second power consumption of the mobile device in a second network, wherein the second network employs a second RAT different from the first RAT; and switching to a the second network when the first network is not suitable.