SSB Measurement Optimization in 5G NR Bandwidth Parts
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Solution Overview
Problem
In 5G New Radio (NR) networks, the existing intra-frequency measurement process is inefficient due to the need for measurement gaps (MGs) during bandwidth part (BWP) switching, which can cause throughput degradation and unnecessary data halt, especially when multiple synchronization signals (SSBs) from the same cell need to be measured, even if they carry similar information.
Innovation Solution
The solution involves configuring the user equipment (UE) to measure only one SSB associated with the serving cell, allowing it to determine which SSBs are from the same cell and reducing unnecessary measurements by using a measurement map (MG) that authorizes the UE to perform measurements without interrupting data processing, thereby optimizing resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE measures multiple SSBs from the same cell during intra-frequency measurement, then measurement completeness is improved, but throughput degradation increases due to measurement gaps interrupting data processing
Solution Approach 1:
The patent extracts and removes unnecessary measurement actions by identifying that multiple SSBs from the same cell provide redundant information. The UE is configured to measure only one SSB per cell by utilizing the serving cell's BWP configuration to determine which SSBs belong to the same cell, thereby eliminating redundant measurements that would otherwise require measurement gaps and interrupt data processing.
2Measurement precision
If measurement gaps are configured for intra-frequency measurement, then measurement accuracy is improved, but data processing is interrupted causing efficiency loss
Solution Approach 1:
The patent applies preliminary action by configuring the UE with BWP information of the serving cell in advance. This allows the UE to proactively identify which SSBs are associated with the serving cell before performing measurements, enabling the UE to skip unnecessary measurements and avoid configuring measurement gaps, thus preventing data processing interruptions before they occur.
3Measurement precision
If the UE identifies and measures all transmitted SSBs, then measurement thoroughness is improved, but radio resource management efficiency deteriorates due to unnecessary measurements
Solution Approach 1:
The patent enables the UE to self-determine which SSBs need to be measured by providing the UE with serving cell BWP configuration information. The UE uses this information to autonomously identify SSBs associated with the serving cell and exclude them from measurement, eliminating the need for network-side coordination and improving RRM efficiency while maintaining measurement thoroughness for relevant cells.
Data Source
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AI summary
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems configuring synchronization signal block (SSB) measurements associated with one serving cell in intra-frequency measurements in New Radio (NR) involved networks. Various embodiments describe how to enable an option so that a user equipment only need to measure one SSB if more than one SSBs are to be transmitted in more than one bandwidth parts (BWPs) from a serving cell. Various embodiments further describes how to determine that a plurality of SSBs are from the same serving cell and which SSB to measure among the plurality of SSBs from the same serving cell. Thus, the UE and/or an access node (AN) may improve throughput performance, network efficiency and other efficiencies. Other embodiments may be described and claimed.