Inter-Frequency SSB Measurement Without Gaps for RedCap UE
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Solution Overview
Problem
Reduced capability user equipment (RedCap) devices face performance degradation and increased power consumption due to the need for measurement gaps (MGs) during inter-frequency measurements, as they often require tuning to frequency bands outside their active bandwidth part (BWP) to perform synchronization signal block (SSB) measurements, disrupting uplink and downlink transfers.
Innovation Solution
The method involves determining the level of SSB block measurement timing configuration (SMTC) overlap with MGs and optimizing inter-frequency measurements without MGs by using network flags and carrier-specific scaling factors (CSSFs) to allocate resources efficiently for SSB-based measurements, allowing RedCap UEs to perform measurements within or outside MGs based on overlap conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are introduced for inter-frequency measurements, then measurement capability is improved, but uplink and downlink transfers are disrupted and power consumption increases
Solution Approach 1:
The patent segments the measurement timing configuration into different overlap levels (fully overlapped, partially overlapped, fully non-overlapped) and applies different measurement strategies for each segment. This allows the system to perform measurements without requiring full measurement gaps, thereby maintaining uplink and downlink transfer efficiency while achieving accurate inter-frequency measurements.
Solution Approach 2:
The patent dynamically adjusts the measurement timing configuration based on the overlap level between SMTC and MG. The UE determines whether to perform measurements within or outside MG based on real-time conditions, making the measurement process adaptive and flexible. This dynamic approach eliminates the need for fixed measurement gaps and reduces disruption to data transfers.
2Measurement precision
If measurement gaps are configured for inter-frequency measurements, then measurement accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by performing measurements only when necessary and only for the duration needed. Instead of requiring full measurement gaps, the system performs measurements during overlapping periods or uses network flags to enable measurements only when beneficial. This partial approach reduces power consumption while maintaining sufficient measurement accuracy for handover decisions.
Solution Approach 2:
The patent changes the parameter of measurement timing configuration based on overlap levels and network flags. By adjusting whether measurements occur within or outside MG, and modifying measurement parameters based on SMTC-MG overlap conditions, the system achieves accurate measurements without the excessive power consumption associated with traditional measurement gaps.
3Adaptability or versatility
If RedCap UE performs inter-frequency measurements outside active BWP, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent makes the measurement timing configuration universal by using a single configuration that works for both intra-frequency and inter-frequency measurements. The same SMTC configuration is applied regardless of the measurement type, and the UE determines the appropriate measurement strategy based on the overlap level. This universal approach simplifies UE configuration and reduces device complexity while maintaining versatile measurement capabilities.
Solution Approach 2:
The patent enables the UE to self-determine the measurement strategy based on the overlap level between SMTC and MG. The UE autonomously decides whether to perform measurements within or outside MG without requiring complex network configuration or manual setup. This self-service approach reduces device complexity while maintaining advanced inter-frequency measurement capabilities.
Data Source
AI summary
Methods, systems, and computer readable media for reference synchronization signal/physical broadcast channel block (SSB) signal measurement are disclosed. In one aspect, the method can include actions of determining, by a UE, whether a level of SSB block measurement timing configuration (SMTC) overlap for inter-frequency measurement without measurement gap (MG) without capability is (i) partially overlapped or (ii) fully nonoverlapped with a MG configured by a serving cell, and determining, by the UE, whether to perform inter-frequency measurement without measurement gap (MG) without capability within the MG or outside of the MG based on the determined level of SMTC overlap.