Adaptive Measurement Reporting for Mobile Terminals
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Solution Overview
Problem
In LTE systems, the configuration for measurement reporting is uniform regardless of the terminal's state, leading to unnecessary power consumption in stationary or low-moving terminals, as they perform frequent measurements and reports.
Innovation Solution
A method where terminals adjust measurement reporting configurations based on their current state, reducing the frequency of reporting in stationary or low-moving states to conserve power, by determining state information such as mobility, speed, service state, and network quality, and triggering reports only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform measurement reporting configuration is applied to all terminals regardless of state, then measurement accuracy and network handover reliability are maintained, but power consumption increases for stationary or low-moving terminals
Solution Approach 1:
The patent applies dynamics by making the measurement reporting configuration adaptive rather than static. The terminal determines its current state (stationary, low-speed, or high-speed) and dynamically adjusts the measurement reporting configuration accordingly. This allows the system to transition between different reporting frequencies and thresholds based on actual mobility conditions, resolving the contradiction between maintaining reliable handovers and reducing unnecessary power consumption for stationary terminals
Solution Approach 2:
The patent changes key parameters of the measurement reporting configuration based on terminal state. Specifically, it adjusts the measurement reporting event thresholds (A3 offset, A5 offset), reporting intervals, and frequency of inter-frequency/inter-system measurements according to whether the terminal is stationary, low-speed, or high-speed. This parameter adaptation resolves the contradiction by using stricter parameters for stationary terminals (reducing power consumption) while maintaining appropriate parameters for moving terminals (ensuring handover reliability)
2Reliability
If frequent measurement reporting is performed for all terminals, then network handover and cell reselection reliability is ensured, but unnecessary power consumption occurs for terminals in stable states
Solution Approach 1:
The patent changes measurement reporting parameters based on terminal mobility state. For stationary terminals, it relaxes measurement triggering conditions (e.g., increases A3/A5 offsets, extends reporting intervals) to reduce the frequency of measurements and reports. For moving terminals, it maintains stricter parameters to ensure reliable cell reselection. This selective parameter adjustment resolves the contradiction between ensuring cell reselection reliability and minimizing energy loss
3Use of energy by moving object
If state-based differentiated measurement reporting configuration is applied, then power consumption is reduced for stationary terminals, but system complexity increases
Solution Approach 1:
The patent segments the terminal population into distinct mobility states (stationary, low-speed, high-speed) and applies different measurement reporting configurations to each segment. This segmentation allows the system to manage complexity by handling each state category separately with pre-defined parameter sets, rather than attempting continuous optimization. The segmentation approach resolves the contradiction by organizing the complexity into manageable discrete states while achieving significant power savings for stationary terminals
Data Source
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AI summary
A measurement reporting method and a device are provided. The measurement reporting method applied to a terminal includes: triggering a measurement reporting in a case that the terminal satisfies a preset measurement reporting event, wherein the preset measurement reporting event is related to current state information of the terminal.