Conditional Measurement Gaps for Delay-Critical Wireless Traffic
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Solution Overview
Problem
Measurement gaps in wireless communication systems can cause delays in data transfer, particularly for delay-critical traffic like extended reality (XR) and ultra-reliable low-latency communications (URLLC), as they may overlap with data bursts, leading to unsatisfactory latency and quality of service requirements.
Innovation Solution
Implementing conditional measurement gaps, where user equipment (UE) receives configuration information to refrain from performing measurements during scheduled gaps based on specific criteria, such as deprioritization, relaxation, or deactivation of measurement gaps when certain conditions are met, allowing data communication to occur during these times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are implemented for network measurements, then measurement capability is improved, but data transfer delay increases
Solution Approach 1:
The patent applies dynamics by making the measurement gap configuration adjustable and adaptive. The network can dynamically configure measurement gap patterns (e.g., periodic gaps, gap-free periods) based on traffic conditions and measurement needs, allowing the system to transition between measurement-focused and data-transfer-focused modes as required.
Solution Approach 2:
The patent changes parameters of the measurement gap configuration, such as gap duration, gap period, and gap pattern, to optimize the balance between measurement capability and data transfer. By adjusting these parameters, the system can reduce measurement gaps during critical data transfer periods while maintaining sufficient measurement coverage.
2Measurement precision
If measurement gaps are configured for all traffic types, then measurement coverage is improved, but quality of service for delay-critical traffic deteriorates
Solution Approach 1:
The patent applies local quality by differentiating treatment for different traffic types. Measurement gaps are configured differently for delay-critical traffic (e.g., XR, URLLC) versus other traffic types. For delay-critical traffic, the system may skip measurement gaps or use alternative measurement methods to ensure low latency, while maintaining comprehensive measurement coverage for other traffic types.
Solution Approach 2:
The system dynamically adjusts measurement gap configuration based on the traffic type and service requirements. For delay-critical traffic, the network can dynamically reduce or eliminate measurement gaps during active data transfer, while maintaining measurement capability for mobility management and network optimization.
3Measurement precision
If measurement gaps are performed during data bursts, then measurement accuracy is improved, but latency requirements are violated
Solution Approach 1:
The system performs preliminary actions by scheduling measurement gaps during periods of low data traffic or pre-configuring alternative measurement methods before data bursts occur. This allows the network to maintain measurement accuracy during critical periods without interfering with time-sensitive data transfer.
Solution Approach 2:
The patent introduces intermediary mechanisms such as measurement reporting thresholds and conditional measurement activation. Instead of continuously performing measurements during data bursts, the system uses intermediaries to trigger measurements only when conditions are favorable, maintaining accuracy while avoiding latency violations.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that indicates at least one criterion for refraining from performing a measurement in a measurement gap. The UE may communicate data with a network node during the measurement gap in at least one scheduled measurement gap occasion for the measurement gap based at least in part on the at least one criterion. Numerous other aspects are described.