BWP-Specific Mobility Measurement Scaling in Wireless Systems
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Solution Overview
Problem
Current wireless communications systems face challenges in accurately supporting device mobility and measurements due to limitations in reference signal measurement techniques, particularly with the introduction of Bandwidth Parts (BWP) which can lead to inconsistent channel quality assessments and increased handover ping-pong behavior.
Innovation Solution
A method and system for mobility management in wireless communications that involves user equipment (UE) measuring and scaling mobility measurements based on BWP-specific parameters, allowing for harmonized mobility decisions by combining cell-specific and BWP-specific measurements, and using BWP-specific reference signals to refine mobility decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If BWP-specific reference signals are introduced for mobility measurements, then measurement precision for BWP-level decisions is improved, but device complexity increases due to additional measurement and scaling procedures
Solution Approach 1:
The patent segments mobility measurements into cell-level and BWP-level measurements, with each having its own reference signals and processing procedures. This segmentation allows precise BWP-level measurements while maintaining the ability to make cell-level decisions, resolving the contradiction by organizing complexity into manageable segments rather than a monolithic approach
Solution Approach 2:
The patent introduces BWP-specific parameters (bandwidth, subcarrier spacing, cyclic prefix) that modify how reference signals are measured and scaled. By changing these parameters based on BWP configuration, the system achieves precise measurements adapted to different BWP conditions without requiring completely new measurement methodologies for each scenario
2Measurement precision
If mobility measurements are scaled according to BWP parameters, then channel quality assessment consistency is improved, but measurement processing time increases
Solution Approach 1:
The patent performs preliminary scaling of mobility measurements using BWP parameters before the actual mobility decision is made. By pre-processing the measurements to account for BWP-specific characteristics (bandwidth, numerology), the system ensures consistent channel quality assessments are ready in advance, reducing real-time processing delays
Solution Approach 2:
The system uses feedback from BWP configuration information to adjust measurement scaling factors. The UE receives BWP configuration details from the network and uses this feedback to appropriately scale measurements, ensuring consistency while optimizing processing efficiency through adaptive rather than static scaling approaches
3Reliability
If both cell-specific and BWP-specific measurements are performed, then mobility decision accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges cell-level and BWP-level measurements into a unified mobility decision framework. Rather than treating them as separate independent systems, the patent combines both measurement types and their respective reference signals into an integrated approach where cell-level measurements provide broad context and BWP-level measurements provide detailed specificity, achieving higher accuracy without proportionally increasing complexity
Solution Approach 2:
The patent creates a universal measurement framework that can handle both cell-specific and BWP-specific measurements using the same fundamental principles and reference signal mechanisms. This multi-functional approach allows the system to serve multiple measurement purposes through a single unified structure, improving reliability while avoiding the complexity of separate specialized systems
Data Source
AI summary
A method for mobility management implemented by a user equipment (UE) includes measuring a reference signal thereby producing mobility measurements for a mobility procedure, wherein the reference signal is associated with one of a cell or a bandwidth part (BWP), and scaling the mobility measurements in accordance with at least one BWP parameter.