Low Power Measurements Mode for Wireless Devices
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Solution Overview
Problem
Wireless communication devices face increased battery usage due to new features and configurations, as well as energy-intensive cell reselections without significant user experience benefits, necessitating improvements in power management.
Innovation Solution
Implementing a Low Power Measurements Mode (LPM mode) in wireless devices, which determines stationarity and reduces the frequency of cell measurements, thereby conserving battery life by minimizing unnecessary signaling and reselections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cell measurements are performed frequently to maintain network connectivity and optimize cell reselections, then network reliability is improved, but battery life is reduced
Solution Approach 1:
The patent implements dynamic adjustment of cell measurement frequency based on device motion state. The system transitions between normal measurement mode (when moving) and low power measurements mode (when stationary), adjusting the measurement rate from frequent to reduced based on real-time detection of device motion through sensors or location data.
Solution Approach 2:
The patent changes the parameter of cell measurement frequency based on device state. When the device is detected to be stationary, the measurement frequency parameter is reduced; when the device begins moving, the measurement frequency parameter is increased. This parameter adaptation resolves the contradiction by matching measurement intensity to actual network needs.
2Reliability
If cell reselections are performed frequently to optimize network connection, then network reliability is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts cell reselection behavior based on device motion state. When stationary, the system maintains current cell connection without frequent reselection checks. When moving, the system activates frequent cell reselection monitoring and execution. This dynamic behavior matches energy consumption to actual need.
Solution Approach 2:
The device uses its own motion detection capabilities (sensors, location services) to automatically determine when cell reselection is needed, eliminating unnecessary reselection attempts when stationary. The system serves itself by intelligently deciding based on its own state whether energy-intensive reselection procedures are warranted.
Data Source
AI summary
This disclosure relates to techniques for selecting a low power measurement mode (LPM mode). A wireless device may enter an idle mode, determine that it is stationary, and enter an LPM mode. In the LPM mode, the wireless device may perform cell measurements at a reduced frequency.