UE Measurement Gap Alignment for Low-Latency XR Traffic
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Solution Overview
Problem
The misalignment between measurement gap skipping time periods and XR traffic jitter windows, as well as measurement gaps and time resource units, leads to increased latency and inefficiencies in data transmission for extended reality applications in 5G NR systems.
Innovation Solution
Implement improved time period alignment procedures by adapting measurement gap skipping time periods to align with alignment boundaries, allowing for partial or complete skipping of measurement gaps based on dynamic or semi-static configuration, ensuring precise alignment with XR traffic patterns and resource units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If measurement gap skipping is implemented without alignment adaptation, then measurement gaps can be skipped to accommodate XR traffic, but misalignment with time resource units causes increased latency and transmission inefficiencies
Solution Approach 1:
The measurement gap skipping behavior is made dynamic by adapting the skipping time period based on alignment boundaries. The UE dynamically adjusts when to skip measurement gaps based on whether they align with XR traffic jitter windows and time resource unit boundaries, rather than using a fixed skipping pattern.
Solution Approach 2:
The invention changes the temporal parameters of measurement gap skipping by introducing alignment boundary adaptation. The skipping time period is modified based on its alignment relationship with time resource units and XR traffic patterns, optimizing the timing parameters to reduce latency while maintaining transmission efficiency.
2Loss of time
If measurement gaps are frequently skipped to accommodate XR traffic, then latency is reduced, but measurement precision deteriorates due to insufficient measurement opportunities
Solution Approach 1:
The invention applies local quality by making measurement gap skipping selective rather than uniform. Measurement gaps are skipped only in specific local situations where they align with XR traffic jitter windows or time resource unit boundaries, while measurement gaps that do not align are maintained to ensure measurement precision.
Solution Approach 2:
Instead of completely skipping all measurement gaps or none, the invention applies partial action by selectively skipping only those measurement gaps that create alignment misissues. This partial skipping approach balances the need to reduce latency with the need to maintain sufficient measurement opportunities.
3Device complexity
If measurement gap skipping time period is not aligned with time resource units, then configuration is simpler, but resource utilization deteriorates due to misalignment with XR traffic patterns
Solution Approach 1:
The invention applies preliminary action by pre-aligning the measurement gap skipping time period with time resource unit boundaries and XR traffic jitter windows before actual data transmission begins. This preliminary alignment ensures that subsequent measurement gap skipping operations automatically achieve optimal resource utilization without requiring complex real-time adjustments.
Data Source
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AI summary
The present disclosure relates to a user equipment, UE, comprising the following. A transceiver of the UE, which in operation, receives one or more signals conveying configuration information for configuring a measurement gap skipping time period, wherein the measurement gap skipping time period is useable for determining occasions of skipping a measurement gap. A circuitry of the UE, which in operation, adapts the configured measurement gap skipping time period to be aligned relative to an alignment boundary. Further, it is provided a base station and a method performed by the UE.