Shared Measurement Gaps for Overlapping SSB and CSI-RS Windows
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Solution Overview
Problem
User equipment (UE) faces challenges in efficiently performing mobility measurements on neighboring cells due to overlapping resource windows for synchronization signal block (SSB) and channel state information reference signal (CSI-RS) measurements, leading to inefficiencies in handover processes.
Innovation Solution
A measurement gap sharing mechanism is introduced to allow UE to perform mobility measurements on target frequency points using both SSB and CSI-RS modes by overlapping resource windows, determining the proportion and sequence of measurement modes to optimize resource utilization without adding additional resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE performs mobility measurements using separate measurement gaps for SSB and CSI-RS modes, then measurement accuracy is improved, but resource utilization efficiency deteriorates due to overlapping resource windows
Solution Approach 1:
The patent combines separate measurement gaps for SSB and CSI-RS modes into a shared measurement gap. The network device configures a single measurement gap that can be used by both measurement modes, eliminating the need for separate gaps. This merging approach resolves the contradiction by improving resource utilization efficiency while maintaining measurement accuracy through proper resource window overlap handling.
Solution Approach 2:
The measurement gap is designed to serve multiple functions - it can be used by both SSB-based measurements and CSI-RS-based measurements. The network device configures the shared measurement gap with parameters that allow both measurement modes to operate within the same time resource, making the measurement gap universal and eliminating resource waste from duplicate gaps.
2Measurement precision
If UE uses multiple measurement modes (SSB and CSI-RS) for target frequency point measurement, then handover decision accuracy is improved, but measurement complexity increases due to overlapping resource windows
Solution Approach 1:
The patent introduces dynamic resource window indication mechanisms where the network device can flexibly indicate which resource windows are available for each measurement mode within the shared measurement gap. This dynamic configuration allows the system to adapt to different scenarios and resolve the contradiction by providing clear, flexible resource allocation that reduces measurement management complexity while maintaining multi-mode measurement capabilities.
Solution Approach 2:
The network device acts as an intermediary that coordinates between SSB-based measurements and CSI-RS-based measurements within the shared measurement gap. It provides configuration information and resource window indications that mediate the interaction between the two measurement modes, resolving conflicts and simplifying UE measurement management while preserving the benefits of multiple measurement modes.
3Loss of energy
If UE performs measurements in overlapping resource windows for all measurement modes, then resource utilization is improved, but measurement reliability may deteriorate due to potential conflicts
Solution Approach 1:
The patent applies preliminary action by having the network device pre-configure the shared measurement gap parameters and pre-indicate resource window arrangements before measurements are performed. This advance configuration ensures that overlapping resource windows are properly coordinated, preventing measurement conflicts and maintaining reliability while achieving high resource utilization efficiency.
Solution Approach 2:
The system employs feedback mechanisms where the network device monitors measurement configurations and can adjust resource window indications and measurement gap parameters based on observed conditions. This feedback loop ensures that overlapping resource windows continue to provide high resource utilization without compromising measurement reliability, as the network can respond to changing conditions.
Data Source
AI summary
A method for sharing a measurement gap includes: when a first resource window corresponding to a first measurement mode and a second resource window corresponding to a second measurement mode overlap, performing a mobility measurement on a target frequency point with a target measurement mode, according to a measurement gap sharing mechanism.