Dynamic Cell Priority Management for Power Reduction
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Solution Overview
Problem
User equipment (UE) experiences increased power consumption and poor network performance when in activity states, such as during workouts or in areas with poor network coverage, due to conventional mechanisms that blindly lock radio access technologies without considering the UE's status, leading to inefficient prioritization of cells and increased battery drain.
Innovation Solution
The UE dynamically determines its activity state and adjusts network connection priorities and scanning paces based on network quality, prioritizing stronger connections and reducing power usage by switching to alternative networks like legacy RAN when LTE connections degrade, and selectively enabling data transfer sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE maintains continuous network connection monitoring and scanning in activity state, then network connection reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the scanning pace and cell priority dynamic rather than static. The UE adjusts the scanning pace and cell priority based on activity state detection and network quality measurements. When in activity state with poor network quality, the system dynamically adapts parameters to balance connection reliability and power consumption, resolving the contradiction between maintaining reliable connections and reducing energy use during movement.
Solution Approach 2:
The patent changes key parameters (scanning pace and cell priority) based on detected conditions. The processor measures network quality and adjusts the scanning pace and cell priority parameters accordingly. This parameter adaptation allows the system to maintain connection reliability when needed while reducing power consumption during activity states by lowering scanning frequency when appropriate.
2Reliability
If the UE performs frequent network quality measurements and cell scanning, then network connection quality is improved, but battery drain increases
Solution Approach 1:
The patent applies partial action by performing network quality measurements and cell scanning at selective intervals rather than continuously. The scanning pace is adjusted to be partial (reduced frequency) when the UE is in activity state and network quality is adequate, eliminating the need for excessive continuous monitoring while maintaining sufficient connection quality assurance.
Solution Approach 2:
The system dynamically adjusts the scanning pace based on activity state and measured network quality. When network quality is good and UE is in activity state, the scanning pace is reduced to minimize battery drain. When quality degrades or UE is stationary, scanning frequency increases to maintain connection quality, thus dynamically balancing measurement thoroughness with energy conservation.
3Productivity
If the UE prioritizes LTE network connections, then data exchange rate is improved, but power consumption increases in poor coverage areas
Solution Approach 1:
The patent changes the network selection parameter (cell priority) based on activity state and network quality measurements. When UE is in activity state and LTE signal quality is poor, the system changes the priority parameter to favor legacy RAN networks instead of insisting on LTE connections. This parameter adaptation allows the UE to accept lower data rates on alternative networks when it reduces power consumption compared to continuously seeking LTE coverage.
Data Source
AI summary
A device, system, and method reduce a power usage while an activity state is detected. The method is performed at a device that establish a network connection to a first network via first cells and to a second network via second cells. The device is connected to the first network via a first cell of the first cells. The method includes determining an activity state or a non-activity state associated with the device. The method includes measuring a quality of the network connection via the first cell. When the activity state is determined and when the quality is at least a predetermined threshold, the method includes setting a first priority and a first scanning pace for the first cell and a second priority and a second scanning pace for other ones of the first cells and the second cells.