Frequency Measurement Power Optimization for IoT Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In NB-IoT and eMTC systems, user equipment (UE) with power-saving requirements face increased electricity consumption due to continuous measurement of high-priority frequencies, which is not optimized for load balance and power efficiency.
Innovation Solution
A method where UE measures M high-priority frequencies with reduced priority settings, consuming less electricity compared to measuring N high-priority frequencies without power-saving requirements, by selecting frequencies based on priority lists and adjusting measurement periods, allowing for power-saving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE always measures high-priority frequencies to satisfy load balance requirement, then load balance is improved, but electricity consumption increases
Solution Approach 1:
The patent makes the frequency measurement behavior dynamic by introducing a power-saving requirement flag that changes UE behavior. When the flag is set, UE measures frequencies according to priority without restriction; when not set, UE relaxes measurement on lower-priority frequencies. This dynamic adaptation resolves the contradiction between maintaining load balance and reducing power consumption.
Solution Approach 2:
The patent changes the measurement parameter (whether to measure a frequency) based on the power-saving requirement state. By conditionally measuring or not measuring certain frequencies based on priority levels and the power-saving flag, the system optimizes the balance between load distribution and energy consumption.
2Measurement precision
If UE measures all frequencies in idle state, then measurement completeness is improved, but power efficiency deteriorates
Solution Approach 1:
The patent applies different measurement strategies to different frequency groups based on their priority levels. High-priority frequencies are measured according to standard procedures, while lower-priority frequencies are selectively measured or skipped based on the power-saving requirement. This localized differentiation maintains measurement quality where needed while saving power elsewhere.
Solution Approach 2:
Instead of measuring all frequencies uniformly, the patent implements partial measurement action by selectively measuring only necessary frequencies based on priority and power-saving state. This partial action approach achieves sufficient measurement completeness for critical frequencies while avoiding unnecessary power consumption on less important measurements.
Data Source
AI summary
A method for frequency measurement and related apparatuses are provided. The method includes the following. M first frequencies are measured on condition that a user equipment has a power-saving requirement. Electricity consumed by measuring the M first frequencies is less than that consumed by measuring N first frequencies. The N first frequencies are measured on condition that the user equipment has no power-saving requirement. N is a positive integer and larger than or equals M. A first priority of the first frequency is higher than a second priority of a second frequency, where a current serving cell which the UE is camped on is on the second frequency.