Multi-Carrier Measurement Control Using s-Measure Threshold
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Solution Overview
Problem
In LTE-A systems, existing measurement control methods fail to effectively configure and manage mobility measurements across multiple serving carriers, leading to inefficient resource utilization and increased power consumption due to the lack of consideration for channel quality across aggregated carriers.
Innovation Solution
A measurement control method for multi-carrier systems where User Equipment (UE) selects the channel quality of a serving carrier group as a reference value to uniformly start and close measurements on non-serving carriers or groups based on a configured measurement starting threshold (s-Measure), using weight or arithmetic averages to evaluate channel quality across serving carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement is performed on all carriers in LTE-A system, then mobility measurement coverage is improved, but power consumption and resource utilization deteriorate
Solution Approach 1:
The patent applies local quality by differentiating measurement control based on carrier types. Serving carriers maintain continuous measurement for mobility management, while non-serving carriers perform measurements only when needed (when channel quality falls below threshold). This localized differentiation ensures reliable measurement coverage for active carriers while reducing power consumption by disabling unnecessary measurements on inactive carriers.
Solution Approach 2:
The patent implements dynamics through the event-triggered measurement mechanism on non-serving carriers. Instead of continuous measurement, the system dynamically activates measurements only when the serving carrier's channel quality deteriorates below the s-Measure threshold, and deactivates them when quality improves. This dynamic adaptation balances measurement coverage requirements with power consumption reduction.
2Measurement precision
If measurement is performed on all carriers, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments measurement control into two distinct modes: continuous measurement for serving carriers and event-triggered measurement for non-serving carriers. This segmentation simplifies the overall control logic by applying different measurement strategies to different carrier types, reducing the complexity of managing measurements across multiple carriers while maintaining sufficient precision for mobility management.
Solution Approach 2:
The system implements self-service through automatic measurement activation/deactivation based on channel quality thresholds. When the serving carrier's channel quality falls below s-Measure, measurements on non-serving carriers are automatically activated without requiring manual configuration. Conversely, when quality improves, measurements are automatically deactivated. This self-managing mechanism reduces control complexity while ensuring precise measurements when needed.
3Use of energy by moving object
If event-triggered measurement mode is used, then power consumption is reduced, but measurement response time worsens
Solution Approach 1:
The patent applies preliminary action by maintaining continuous measurement on serving carriers and pre-configuring measurement parameters for non-serving carriers. When channel quality deterioration occurs, measurements on non-serving carriers can be quickly activated since the framework and parameters are already in place. This preliminary preparation reduces the response time delay associated with event-triggered measurement activation.
Data Source
Figure 1~2
AI summary
A measurement control method, system and device for a multi-carrier system are disclosed. The method includes that: UE selects the channel quality of a serving carrier or serving carrier group as a reference value, uniformly starts measurement on carriers except serving carriers or serving carrier groups when the reference value is smaller than a measurement starting threshold, s-Measure, configured by an eNB for the serving carriers or serving carrier groups, and uniformly closes the measurement on the carriers except the serving carriers or serving carrier groups when the reference value is larger than or equal to the s-Measure. Through referring to the channel quality of one serving carrier or one serving carrier group, measurement on the carriers except the serving carriers or serving carrier groups is uniformly started and closed, so as to solve the problem that the UE controls measurement according to multi-carrier signal quality in multiple serving cells.