Wireless Device Relaxed Measurement Reporting for Power Savings
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Solution Overview
Problem
In wireless communication systems, especially in idle or inactive states, devices face challenges in efficiently reporting relaxed measurement conditions, leading to potential delays in Carrier Aggregation (CA) and Dual Connectivity (DC) setups due to unnecessary measurements when the serving cell quality is stable or the device is stationary, resulting in increased power consumption and setup delays.
Innovation Solution
A method where a wireless device receives a measurement configuration from the network, evaluates relaxed measurement conditions based on serving cell measurements, and transmits an indication of performing relaxed measurements, allowing the network to adjust measurement configurations accordingly, thereby reducing unnecessary measurements and enabling faster CA/DC setups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wireless device performs normal measurement on all configured frequencies, then the measurement precision and reliability are improved, but the power consumption increases and setup delay occurs
Solution Approach 1:
The patent applies partial action by performing relaxed measurement that measures only a subset of neighbor cells or extends the measurement period, rather than measuring all configured frequencies continuously. This partial measurement approach maintains adequate measurement precision while significantly reducing power consumption during idle and inactive states
Solution Approach 2:
The patent implements dynamic measurement configuration by allowing the wireless device to switch between normal measurement and relaxed measurement modes based on serving cell quality conditions. When serving cell quality is above threshold, relaxed measurement is applied; when below threshold, normal measurement is restored, creating a dynamic adaptation to actual network conditions
2Use of energy by moving object
If the wireless device performs relaxed measurement by extending measurement period or reducing measured cells, then the power consumption is reduced, but the measurement precision and setup speed may be affected
Solution Approach 1:
The patent implements feedback mechanism where the wireless device reports relaxed measurement performance and serving cell quality conditions to the network. The network uses this feedback to adjust measurement configuration, ensuring that relaxed measurement does not cause excessive setup delays while maintaining power savings. The feedback loop allows dynamic optimization of the trade-off between power consumption and setup speed
3Use of energy by moving object
If the wireless device performs relaxed measurement with extended period to infinity, then the power consumption is minimized, but the network cannot obtain timely measurement information for fast CA/DC setup
Solution Approach 1:
The patent applies preliminary action by performing relaxed measurement in advance during idle and inactive states to gather measurement information before CA/DC setup is needed. This preliminary measurement ensures that when setup is required, the network already has recent measurement data, reducing the need for immediate full-scale measurements and enabling faster setup while maintaining power savings
Data Source
AI summary
A method and apparatus for reporting relaxed measurement in a wireless communication system is provided. A wireless device receives, from a network, a first measurement configuration including at least one of relaxed measurement conditions. A wireless device performs measurements on a serving cell based on the first measurement configuration. A wireless device evaluates the at least one of the relaxed measurement conditions based on results of the measurements on the serving cell. A wireless device performs a first relaxed measurement on the serving cell and/or at least one of neighbor cells based on the evaluation. A wireless device transmits, to the network, a message including an information informing that the first relaxed measurement has been performed on the serving cell and/or the at least one of the neighbor cells.