Network-Assisted Mobility Measurement Control for Lower Terminal Power Use
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Solution Overview
Problem
Existing measurement and reporting methods in communication systems fail to reduce power consumption of terminal devices without affecting measurement or communication effectiveness, leading to inadequate energy-saving performance.
Innovation Solution
A network device transmits assistance messages to adjust mobility measurement behaviors of terminal devices, enabling flexible configuration of measurement frequencies, types, and times through MIB, SIB, DCI, or RRC signaling, allowing for early measurement reporting and carrier aggregation with reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices perform mobility measurements according to network-configured measurement parameters, then measurement accuracy and communication reliability are improved, but power consumption increases
Solution Approach 1:
The network device performs preliminary actions by configuring measurement parameters in advance and sending assistance information to the terminal device before actual measurements are needed. This allows the terminal to prepare measurement configurations and understand measurement requirements beforehand, enabling more efficient measurement execution that reduces unnecessary power consumption while maintaining reliability
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting measurement parameters based on terminal capabilities and network conditions. The network device modifies measurement frequencies, types, and timing parameters according to the specific scenario (e.g., high-speed train vs. IoT applications), allowing the terminal to perform measurements with optimized power consumption characteristics that match actual communication needs
2Measurement precision
If measurement frequencies and types are increased to improve measurement accuracy, then mobility measurement precision is improved, but terminal power consumption increases
Solution Approach 1:
The patent applies local quality by tailoring measurement configurations to specific scenarios and terminal types. Instead of using uniform measurement parameters for all terminals, the network device adjusts measurement frequencies, types, and durations according to the specific local conditions (e.g., high-speed scenarios require different measurements compared to stationary IoT devices), achieving precise measurements only where and when needed, thereby reducing overall power consumption
Solution Approach 2:
The patent applies partial action by performing only the necessary measurements required for each specific scenario rather than executing all possible measurements. The network device sends assistance information that guides the terminal to perform selective measurements based on actual communication needs, avoiding excessive or unnecessary measurement actions that would waste terminal power while still achieving sufficient measurement accuracy for the given context
3Reliability
If measurement time is extended to improve measurement accuracy, then measurement reliability is improved, but measurement speed decreases
Solution Approach 1:
The patent applies dynamics by making measurement time flexible and adaptive rather than fixed. The network device dynamically adjusts measurement durations and timing based on network conditions, terminal state, and measurement requirements. This allows the system to extend measurement time when high reliability is critical and reduce measurement time when speed is prioritized, creating a dynamic balance between measurement reliability and speed that responds to actual operational needs
Data Source
AI summary
A measurement control method implemented by a network device includes that: the network device sends an assistance message to a terminal device, the assistance message being used for adjusting a mobility measurement behavior of the terminal device. A measurement control method implemented by a terminal device includes that: the terminal device receives an assistance message from a network device, the assistance message being used for adjusting a mobility measurement behavior of the terminal device. A network device is also provided.