5G UE Rx Beam Measurement Compensation
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Solution Overview
Problem
Current user equipment (UE) for 5G mobile communication uses the same number of receiving beams for both serving and neighboring cells during measurements, leading to different measurement results due to varying antenna gains, which complicates cell change decisions for the network.
Innovation Solution
A method where the UE performs measurements using a different number of receiving beams for serving and neighboring cells, with the ability to transmit compensated measurement information to ensure accurate cell change decisions, by using a first number of beams for serving cell measurements and a second number for neighboring cell measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE uses the same number of Rx beams for serving cell and neighboring cell measurements, then measurement consistency is maintained, but power consumption increases and measurement accuracy deteriorates due to varying antenna gains
Solution Approach 1:
The patent applies local quality by configuring different numbers of Rx beams for different measurement objects (serving cell vs. neighboring cell). Specifically, the network configures a first number of Rx beams for serving cell measurements and a second number of Rx beams for neighboring cell measurements, allowing each measurement to use the appropriate beam quantity for its specific requirements, thereby optimizing both power consumption and measurement accuracy locally for each cell type.
Solution Approach 2:
The patent changes the parameter of Rx beam quantity based on the measurement object. The network configures different beam quantities (first number vs. second number) depending on whether the measurement is for a serving cell or neighboring cell. This parameter change allows the system to use fewer beams for neighboring cell measurements to save power while maintaining sufficient accuracy, and more beams for serving cell measurements to ensure high accuracy.
2Use of energy by moving object
If the UE uses different number of Rx beams for serving cell and neighboring cell measurements, then power consumption is reduced, but measurement consistency deteriorates leading to incorrect cell change decisions
Solution Approach 1:
The patent implements feedback by introducing compensation mechanisms that account for the different numbers of Rx beams used. The network configures measurement objects with associated Rx beam quantities, and the UE applies compensation based on these configurations when reporting measurement results. This feedback loop ensures that cell change decisions remain accurate despite using different beam quantities for different cell types.
Solution Approach 2:
The patent introduces compensation as an intermediary mechanism between the different beam configurations and the final measurement comparison. The compensation value acts as a mediator that adjusts the measurement results to account for the varying Rx beam quantities, ensuring that the network can make accurate cell change decisions based on compensated measurements rather than raw measurements that would be inconsistent.
3Measurement precision
If the UE uses more Rx beams for serving cell measurements, then serving cell measurement accuracy is improved, but overall measurement complexity increases
Solution Approach 1:
The patent applies segmentation by dividing measurement objects into distinct categories (serving cell measurements and neighboring cell measurements) with different Rx beam configurations. Each measurement object is configured with a specific number of Rx beams appropriate for its type, avoiding the need to use the maximum number of beams for all measurements. This segmentation reduces overall device complexity while maintaining high accuracy for serving cell measurements where it is most needed.
Data Source
AI summary
There is provided a method for performing measurement. The method performed by a wireless communication device and comprises: performing first measurement for a SS(Synchronization Signal)/PBCH(Physical Broadcast Channel) Block (SSB) transmitted from a serving cell by using a first number of receiving beams; performing second measurement for a SSB transmitted from a neighboring cell by using a second number of receiving beams; and transmitting first information related to the first measurement and second information related to the second measurement to the serving cell, wherein the second number is different from the first number.