Frequency-Specific VIL Settings for FR2-2 UE Measurement Gaps

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Solution Overview

Problem

Current wireless communication systems lack measurement gap enhancements for the 71 GHz (FR2-2) frequency range, particularly in 3GPP Technical Specification (TS) 38.133 release 17, and do not support different visible interruption lengths (VIL) based on user equipment (UE) capabilities, leading to inefficiencies in UE measurements.

Innovation Solution

Provisioning user equipment (UE) with frequency range-specific visible interruption lengths (VIL) and measurement gap timing advances (MGTA) to accommodate RF retuning and baseband preparation times, allowing efficient data transmission and reception during UE measurements in the FR2-2 frequency range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single visible interruption length (VIL) is used for all frequency ranges, then configuration simplicity is maintained, but measurement efficiency deteriorates in FR2-2 due to insufficient RF retuning time

Engineering Contradiction:
Improvemeasurement efficiencyVSAvoidconfiguration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies local quality by configuring different VIL values for different frequency ranges. Specifically, FR2-2 frequency range is assigned a longer VIL (e.g., 0.75ms) to accommodate its larger RF retuning time requirements, while other frequency ranges use shorter VIL values. This allows each frequency range to have optimized measurement parameters tailored to its specific RF characteristics, thereby improving measurement efficiency without unnecessarily complicating the overall system.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the VIL parameter based on frequency range characteristics. By introducing frequency-range-specific VIL configurations (e.g., 0.5ms for FR1, 0.75ms for FR2-2), the system adapts the measurement gap parameters to match the RF retuning capabilities of different frequency bands. This parameter adaptation resolves the contradiction by optimizing measurement efficiency for each frequency range while maintaining a manageable configuration structure through standardized parameter sets.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If measurement gap is extended to accommodate RF retuning time, then synchronization signal block (SSB) reception reliability is improved, but data transmission time is reduced

Engineering Contradiction:
ImproveSSB reception reliabilityVSAvoiddata transmission duration
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent applies dynamics by making the VIL duration adaptive to the specific frequency range being measured. Instead of using a fixed extended gap for all frequencies, the system dynamically selects appropriate VIL values (e.g., 0.5ms or 0.75ms) based on the RF retuning requirements of each frequency range. This dynamic adjustment ensures sufficient time for SSB reception while minimizing the impact on data transmission opportunities, thereby balancing reliability and transmission duration.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies partial action by configuring VIL values that are sufficient but not excessive for each frequency range. Rather than uniformly extending the measurement gap beyond what is necessary, the system uses the minimum required VIL duration to ensure reliable SSB reception. This prevents unnecessary loss of data transmission time while still achieving the reliability goal for SSB measurements.

Inventive Principle:
Principle #16Partial or excessive action

3Adaptability or versatility

If frequency-specific VIL configuration is implemented, then UE measurement capability is enhanced, but system configuration complexity increases

Engineering Contradiction:
ImproveUE measurement capabilityVSAvoidconfiguration management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the frequency spectrum into distinct ranges (FR1, FR2-1, FR2-2) and assigning specific VIL configurations to each segment. This segmentation allows the system to enhance UE measurement capability by providing frequency-appropriate parameters while managing complexity through modular configuration. Each frequency range segment has its own optimized VIL settings, making the overall system adaptable without requiring complete reconfiguration for each frequency change.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies universality by creating a multi-functional VIL configuration framework that serves multiple frequency ranges with a single standardized parameter set structure. The same configuration mechanism handles different frequency ranges by selecting from predefined VIL values, providing universal adaptability across FR1, FR2-1, and FR2-2. This approach enhances measurement capability across all frequencies while avoiding the complexity of entirely separate configuration systems for each band.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250267728A1Frequency range or frequency band specific visible interruption length setting for network controlled small gap for a user equipment measurement
Publication Date: 2025.08.21 APPLE INC
  • US20250267728A1 patent drawing
  • US20250267728A1 patent drawing
  • US20250267728A1 patent drawing

AI summary

A user equipment (UE) includes a transceiver and a processor. The processor is configured to transmit, from the UE to a base station, and via the transceiver, UE capability information identifying a visible interruption length type (VIL-type) supported by the UE. The processor is configured to receive, from the base station, and via the transceiver, a visible interruption length (VIL) configuration. The VIL configuration corresponds with the UE capability information transmitted to the base station, and a frequency range for performing measurements.