User Equipment Power Management via Priority-Based Network Selection
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Solution Overview
Problem
User equipment, such as mobile devices and machine-to-machine communication devices, face challenges in preserving electrical power for extended periods, as existing power management methods do not effectively optimize network selection based on priority and time intervals, leading to inefficient power consumption.
Innovation Solution
The user equipment performs a network selection procedure to find a higher priority mobile communication network after a time interval has elapsed, with the time interval determined by stored time interval related information, allowing for flexible scaling and adaptation factors, and increasing scaling values, enabling longer operational periods by reducing frequent network switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user equipment frequently performs network selection procedures to find higher priority networks, then the network priority is improved, but the power consumption increases
Solution Approach 1:
The patent implements periodic network selection procedures where the user equipment performs network selection only after a predetermined time interval has elapsed, rather than continuously or frequently. This periodic approach balances the need to find higher priority networks with the need to conserve battery power by limiting the frequency of power-intensive network selection operations.
Solution Approach 2:
The patent dynamically adjusts the time interval between network selection procedures based on the priority of the current network. When the current network has low priority, the time interval is shortened to allow faster reselection. When the current network has high priority, the time interval is extended to conserve power. This dynamic adaptation resolves the contradiction by making the system responsive to actual network conditions.
2Reliability
If the user equipment performs network selection procedures more often, then the network priority improves, but the operational duration decreases
Solution Approach 1:
By implementing periodic network selection with predetermined time intervals, the patent reduces the frequency of power-intensive operations while still maintaining the ability to find higher priority networks when necessary. This periodic approach extends operational duration by conserving power without completely sacrificing network priority improvement opportunities.
Solution Approach 2:
The patent changes the time interval parameter between network selection procedures based on network priority conditions. By adjusting this temporal parameter dynamically, the system optimizes the balance between finding higher priority networks and extending operational duration, resolving the contradiction between these two objectives.
3Reliability
If the time interval for network selection is shortened, then the network priority improves faster, but the power consumption increases
Solution Approach 1:
The patent dynamically adjusts the time interval parameter based on the priority status of the current network. When a low-priority network is detected, the time interval is shortened to enable faster reselection to higher priority networks. When a high-priority network is already connected, the time interval is extended to conserve power. This dynamic parameter adjustment resolves the contradiction by adapting the system behavior to actual network conditions.
Solution Approach 2:
The patent implements parameter changes by modifying the time interval between network selection procedures based on network priority assessments. This parameter adaptation allows the system to optimize both network priority improvement speed and power consumption by selecting appropriate time intervals based on current network conditions rather than using a fixed interval.
Data Source
AI summary
A method for enhanced power consumption management of a user equipment using a mobile communication network and a radio access technology. The user equipment is provided with priority information regarding at least one of the mobile communication network and the radio access technology. The method includes performing, by the user equipment in case that the priority information indicates a sufficiently low priority of at least one of the mobile communication network used by the user equipment and the radio access technology used by the user equipment, a network selection procedure to find a higher priority mobile communication network after a time interval has elapsed. The user equipment includes an entity realizing the functionality of a subscriber identity module that includes time interval related information such that the time interval depends on the time interval related information.