Timing Control Method for Slot Alignment in Wireless Communication
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Solution Overview
Problem
In wireless communication systems, terminals face challenges in maintaining slot alignment during automatic timing control (ATC) adjustments across different subcarrier spacings, leading to slot misalignment and complex or impossible conversion of slot numbers.
Innovation Solution
A timing control method that involves tracking a reference signal with a first subcarrier spacing to obtain a timing offset, adjusting a time unit corresponding to a second subcarrier spacing based on this offset, and performing carry system counting on the first subcarrier spacing when the adjusted second subcarrier spacing reaches its length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If automatic timing control adjustment is performed across different subcarrier spacings, then timing tracking accuracy is improved, but slot alignment is lost and slot number conversion becomes complex
Solution Approach 1:
The patent introduces a reference time unit (based on the first subcarrier spacing) as an intermediary to coordinate timing between different subcarrier spacings. This reference time unit acts as a mediator that allows the terminal to perform ATC adjustments while maintaining slot alignment across different numerologies, thereby resolving the conflict between timing tracking accuracy and slot alignment without requiring complex slot number conversions.
2Device complexity
If slot alignment is maintained during subcarrier spacing handover, then system complexity is reduced, but timing offset tracking precision deteriorates
Solution Approach 1:
The patent segments the timing control function into two parts: a reference time unit counter that maintains slot alignment and counts time units based on the first subcarrier spacing, and an ATC adjustment mechanism that operates independently on the second subcarrier spacing. This segmentation allows the system to maintain slot alignment while still performing precise timing offset tracking, as the reference time unit provides a stable counting basis without interfering with the ATC adjustment precision.
Data Source
AI summary
The disclosure provides a timing control method, a timing control apparatus, an electronic device, a chip, and a storage medium. The method includes: tracking, with a first subcarrier spacing, a reference signal sent by a network device, to obtain a timing offset; adjusting a time unit corresponding to a second subcarrier spacing according to the timing offset; and performing carry system counting on a time unit corresponding to the first subcarrier spacing when a length of the time unit corresponding to the second subcarrier spacing is reached. Therefore, time units corresponding to different subcarrier spacings may be adjusted and counted associatively and it may also be used to solve the problem of slot misalignment caused by ATC adjustments of different subcarrier spacings as well as the problem of complex or impossible conversion of slot numbers corresponding to different subcarrier spacings when performing handovers on the subcarrier spacings.