Wireless Device Timing Adjustment for Numerology Alignment
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Solution Overview
Problem
Existing wireless communication networks face challenges in maintaining accurate timing alignment across different numerologies, leading to potential degradation in network node reception performance, especially in New Radio (NR) systems where multiple numerologies can be used simultaneously, resulting in large timing inaccuracies and system performance deterioration.
Innovation Solution
The implementation of a method and system that allows wireless devices to determine timing adjustment parameters based on numerology parameters, adjusting the timing of uplink transmissions accordingly, using parameters such as subcarrier spacing, frame duration, and cyclic prefix length to ensure accurate timing alignment, even in the presence of varying numerologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single set of timing adjustment parameters is used across all numerologies, then device complexity is reduced, but timing alignment precision deteriorates for specific numerologies
Solution Approach 1:
The patent applies local quality by configuring different timing adjustment parameters (such as different timing advance values, adjustment rates, or step sizes) for different numerologies. Each numerology receives optimized parameters tailored to its specific characteristics (subcarrier spacing, cyclic prefix length), ensuring precise timing alignment for each numerology type while maintaining overall system performance.
2Measurement precision
If timing adjustment parameters are optimized for specific numerologies, then timing alignment precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the timing adjustment mechanism by separating parameter configuration for different numerologies. The network configures distinct timing adjustment parameters for each numerology type, and the wireless device maintains separate parameter sets for different numerologies. This segmentation allows precise optimization for each numerology while organizing complexity in a manageable, structured manner.
Solution Approach 2:
The patent implements dynamic selection of timing adjustment parameters based on the active numerology. The wireless device dynamically applies the appropriate timing adjustment parameters corresponding to the currently active numerology, allowing the system to adapt to changing numerology configurations while maintaining precise timing alignment without managing all parameters simultaneously.
3Ease of operation
If autonomous timing adjustment is implemented without numerology-specific parameters, then system operation is simplified, but network node reception performance deteriorates
Solution Approach 1:
The patent enhances autonomous timing adjustment by introducing numerology-specific parameters that optimize performance for each numerology type. The wireless device autonomously selects and applies the appropriate timing adjustment parameters based on the active numerology, maintaining simplified operation while significantly improving network node reception performance through localized optimization.
Data Source
AI summary
A wireless device and network node are provided. According to one aspect, the wireless device includes processing circuitry configured to determine at least a first timing adjustment parameter based on at least a first numerology parameter and adjust the timing of an uplink transmission based on the first timing adjustment parameter. According to another aspect, a method includes a timing adjustment parameter determiner module configured to determine at least a first timing adjustment parameter based on at least a first numerology parameter. The method also includes a timing adjustment module configured to adjust the timing of an uplink transmission based on the first timing adjustment parameter. These arrangements allow for the preservation of network node reception performance.