Uplink Timing Adjustment Using Downlink Information
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in accurately adjusting uplink transmission timing to ensure synchronization with downlink timing, particularly when significant changes occur in downlink timing information or beam pairing, leading to potential transmission errors and performance issues.
Innovation Solution
A method and apparatus for a terminal to determine and adjust uplink transmission timing using downlink timing information, employing one-shot or gradual adjustment approaches based on error thresholds to maintain synchronization and reduce transmission errors, involving modules for determining errors and adjusting timing parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If downlink timing information changes significantly or beam pairing changes, then uplink transmission timing must be adjusted, but adjustment delays can cause transmission errors and performance degradation
Solution Approach 1:
The patent applies preliminary action by pre-calculating and preparing timing adjustment values before they are needed. The network device predicts future timing adjustments based on current downlink timing trends and beam pairing status, so when timing changes occur, the UE can immediately apply pre-computed adjustment values without waiting for real-time calculations, thereby reducing transmission delays and maintaining reliability
2Measurement precision
If uplink transmission timing is adjusted frequently to maintain synchronization, then synchronization accuracy improves, but system complexity and adjustment overhead increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the timing advance value based on measured downlink timing variations and beam pairing changes. Instead of complex real-time synchronization protocols, the system modifies the timing advance parameter according to predictable patterns in downlink timing, achieving accurate synchronization through controlled parameter adjustment rather than complex control mechanisms
Data Source
AI summary
Embodiments of the present disclosure provide a timing adjustment method and apparatus, a communication device, and a storage medium. The method is applied to a terminal, and includes: according to downlink timing information, determining an adjustment approach for uplink transmitting timing information.