Mobile Device Content Pre-fetching for Battery Optimization
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Solution Overview
Problem
Mobile wireless communication devices face challenges in acquiring the latest information when moving out of a wireless communication service range, either due to long access periods leading to delayed updates or short access periods causing excessive battery consumption.
Innovation Solution
A mobile wireless communication device equipped with a location information storage unit, content storage unit, history storage unit, determination unit, and updating unit that determines the likelihood of transitioning out of a wireless communication service zone and pre-fetches content from the current base station when such a transition is anticipated, thereby updating the device's content storage before leaving the service area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the period to access a specific site is long, then battery consumption is reduced, but the device cannot acquire latest information before moving out of wireless communication range
Solution Approach 1:
The determination unit predicts the likelihood of transitioning out of wireless communication service before the transition occurs. When a high likelihood is determined, the updating unit proactively acquires content from the location information storage unit using the current base station's wireless communication service. This preliminary action ensures latest information is obtained before leaving the service area, while avoiding frequent updates when the device will remain in range.
2Loss of information
If the period to access a specific site is short, then latest information is acquired, but battery consumption increases due to frequent access
Solution Approach 1:
Instead of accessing information at fixed short intervals, the system performs preliminary determination of transition likelihood before actual transition occurs. Content updates are triggered only when high likelihood of leaving service area is predicted, eliminating unnecessary frequent accesses and reducing battery consumption while maintaining information freshness.
Solution Approach 2:
The determination unit continuously monitors current state and base station information to dynamically assess transition likelihood. This feedback mechanism allows the system to adapt update timing to actual movement patterns and service area conditions, optimizing the balance between information freshness and energy consumption.
3Loss of information
If the device accesses information frequently while moving, then latest information is maintained, but unnecessary battery consumption occurs when not needed
Solution Approach 1:
The determination unit uses feedback from current state monitoring and base station information to dynamically determine update timing. By continuously assessing transition likelihood based on actual device state and service area conditions, the system performs content updates only when necessary, maintaining information freshness while eliminating wasteful battery consumption from unnecessary accesses.
Data Source
AI summary
A mobile wireless communication device that wirelessly communicates with a base station that provides wireless communication service includes a location information storage unit configured to store a location information, a content storage unit configured to store the content, a history storage unit configured to store history information, a determination unit configured to determine a possibility of transition from a current base station to in an outside zone of the wireless communication service, and an updating unit configured to acquire a content from the location information storage unit by using wireless communication service that is provided by the current base station, so as to update content of the content storage unit, when the determination unit determines that there is a possibility of transition to the state that the mobile wireless communication device is in the outside zone of the wireless communication service.