Measurement Gap Configuration for NR SSB Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radio resource management (RRM) schemes for wireless communication systems, particularly for 3GPP New Radio (NR), face challenges in configuring measurement gaps due to differences in synchronization signal block (SSB) starting points across frequency layers, beamforming requirements, and the need for different measurement gap offsets for each cell.
Innovation Solution
The proposed solution involves configuring multiple measurement gaps with different offsets for each frequency layer and cell, allowing for accurate alignment of SSBs within the measurement gaps. This is achieved by using a Radio Network Controller (RNC) to manage measurement gap configurations, which can include a single measurement gap per UE with multiple offsets, or multiple measurement gaps per frequency group and cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single measurement gap configuration is used for all frequency layers, then device complexity is reduced, but measurement precision deteriorates due to misalignment with SSB starting points
Solution Approach 1:
The patent divides the measurement gap configuration into multiple segments, each with specific offsets tailored to different frequency layers. Instead of using a single uniform measurement gap for all frequency layers, the system configures multiple measurement gaps with different time offsets to align with the SSB starting points of different frequency layers, thereby improving measurement precision without significantly increasing device complexity
Solution Approach 2:
The patent applies local quality by customizing measurement gap parameters locally for each frequency layer based on its specific SSB timing characteristics. Each frequency layer receives a measurement gap configuration optimized for its local conditions (SSB starting points), rather than applying a global uniform configuration, which improves overall measurement accuracy across diverse frequency layers
2Measurement precision
If multiple measurement gaps with different offsets are configured for each frequency layer, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a unified measurement gap management mechanism that handles multiple frequency layers and their respective measurement gaps through a single standardized interface and configuration framework. This universal approach allows the system to manage multiple measurement gaps with different offsets while maintaining consistent procedures for activation, deactivation, and measurement reporting, thereby reducing the perceived complexity despite the increased number of measurement gaps
Solution Approach 2:
The patent introduces dynamic measurement gap configuration where the network can activate or deactivate specific measurement gaps based on current network conditions and UE capabilities. This dynamic approach allows the system to adapt the number and parameters of measurement gaps in real-time, optimizing measurement precision when needed while reducing complexity when conditions permit fewer measurement gaps
3Measurement precision
If measurement gaps are configured for each cell individually, then measurement precision is improved, but loss of time increases due to multiple gap switching operations
Solution Approach 1:
The patent merges measurement gap configurations for multiple cells into unified measurement gap patterns where possible. By coordinating measurement gaps across cells and aligning their timing, the system reduces the number of separate gap switching operations required. This merging approach maintains precise measurement capability for each cell while minimizing the total time lost to gap transitions
Data Source
AI summary
Logic may receive an initial communication from a user device, the initial communication comprising capabilities. Logic may determine, based on an indication of a capability to support new radio frequency layers from the capabilities for the user device, a measurement gap configuration for the new radio frequency layers and a measurement gap configuration for a channel state information reference signal. Logic may send a frame with a preamble to a physical layer comprising the measurement gap configuration. Logic may send an initial communication to a physical layer, wherein the initial communication comprises capabilities for a user device. Logic may decode downlink data with a measurement gap configuration. And logic may parse the measurement gap configuration to determine at least one measurement gap identification and at least one offset for the new radio frequency layers and a channel state information reference signal.