Inter-Cell Measurement Suitability Filtering for Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing inter-cell measurements and reporting, leading to unnecessary power consumption and potential impacts on scheduling availability, as they lack effective criteria for determining suitable non-serving cells for performing Layer 1 measurements for various inter-cell purposes.
Innovation Solution
The system receives Layer 3 measurement configuration information from a serving cell, performs Layer 3 measurements on non-serving cells, and transmits reports indicating suitability or unsuitability for Layer 1 measurements based on predefined criteria, optimizing inter-cell purposes and capabilities, thereby minimizing unnecessary measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If L3 measurements are performed on all non-serving cells, then measurement coverage is improved, but power consumption increases and scheduling availability deteriorates
Solution Approach 1:
The patent changes the measurement parameter by introducing L3 measurements as a preliminary filter before L1 measurements. By measuring L3 reference signals first and only proceeding to L1 measurements when L3 criteria are met, the system reduces the number of power-consuming L1 measurements while maintaining comprehensive measurement coverage through the two-stage approach.
Solution Approach 2:
The patent applies preliminary action by performing L3 measurements before L1 measurements. The L3 measurement results are used to pre-screen non-serving cells, and only cells meeting the L3 criteria are selected for subsequent L1 measurements. This preliminary filtering action reduces the overall measurement burden and power consumption.
2Measurement precision
If L3 measurements are performed on all non-serving cells, then measurement coverage is improved, but scheduling availability deteriorates
Solution Approach 1:
The patent introduces a new measurement parameter (L3) that can be evaluated more quickly than traditional L1 measurements. By changing the measurement parameter from direct L1 to preliminary L3, the system achieves comprehensive measurement coverage without the same level of impact on scheduling availability.
Solution Approach 2:
The patent performs preliminary L3 measurements to identify candidate non-serving cells before committing resources to full L1 measurements. This preliminary action allows the system to maintain measurement coverage while reducing the time and resources dedicated to exhaustive L1 measurements, thereby improving scheduling availability.
3Productivity
If criteria are established for suitable non-serving cells, then measurement efficiency is improved, but device complexity increases
Solution Approach 1:
The patent establishes criteria based on L3 measurement parameters (such as RSRP thresholds) to identify suitable non-serving cells. By changing the basis of selection from direct L1 measurement results to L3 measurement results, the system improves measurement efficiency while the complexity increase is limited to the additional L3 measurement layer.
Solution Approach 2:
The patent segments the cell selection process into two distinct stages: first evaluating L3 measurement criteria, then evaluating L1 measurement criteria for cells that pass the first stage. This segmentation of the selection process into manageable stages improves overall measurement efficiency while organizing device complexity into modular components.
Data Source
AI summary
A first apparatus may be configured, over a serving cell, to indicate to a second apparatus controlling the operation of the serving cell, a suitability of a non-serving cell for one or more inter-cell purposes. For example, the first apparatus may receive from the second apparatus Layer 3, L3, measurement configuration information including a criterion for one or more first inter-cell purposes. When the first apparatus detects, based on performed L3 measurements of one or more reference signals in one or more non-serving cells that the criterion is met for L3 measurements of a first reference signal in a first non-serving cell, the first apparatus transmits a measurement report indicating that the first non-serving cell is a suitable cell for performing L1 measurements by the first apparatus for one or more second inter-cell purposes.