Multi-Link Wi-Fi Time Synchronization Using Per-Link Timestamps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Wi-Fi standards lack a suitable time synchronization mechanism for multiple links, which is necessary for efficient data transmission in multi-link scenarios.
Innovation Solution
A method and apparatus for time synchronization between a station and an access point using time synchronization function information, including multiple timestamps for each link, enabling synchronization across multiple links through beacon or probe response frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-link synchronization method is used, then synchronization simplicity is maintained, but multi-link data transmission efficiency deteriorates
Solution Approach 1:
The patent divides the synchronization mechanism into per-link timestamp components. Each link maintains its own timestamp (e.g., TSF1 for link 1, TSF2 for link 2), allowing independent synchronization control for each link while enabling multi-link aggregation. This segmentation resolves the contradiction by providing link-specific synchronization without requiring a completely new complex system.
Solution Approach 2:
The patent extends the existing single-link synchronization mechanism to serve multiple links simultaneously. The same basic synchronization principle (using timestamps in beacon frames) is applied universally across all links, with each link having its own timestamp field. This allows the system to maintain simplicity while achieving multi-link synchronization capability.
2Measurement precision
If per-link timestamp synchronization is implemented, then time synchronization precision for each link is improved, but message processing complexity increases
Solution Approach 1:
The patent segments the timestamp information into separate fields for each link within the beacon frame message. Each link has its own dedicated timestamp field (TSF1, TSF2, etc.), allowing precise per-link synchronization while keeping the message structure organized and manageable. This segmentation enables precise measurement without overwhelming complexity.
Solution Approach 2:
The patent applies local quality by giving each link its own specific timestamp and synchronization parameters. Instead of using a single unified timestamp for all links, each link receives customized timestamp information tailored to its specific transmission characteristics. This local quality approach improves precision for each individual link while maintaining overall system manageability.
Data Source
Figure 1~3
Figure 4~5
Figure 6~9
AI summary
The present invention relates to the technical field of communications, and relates to a time synchronization method and apparatus, a terminal, an access point device, and a storage medium. The method comprises: receiving a message carrying time synchronization parameter information, the time synchronization parameter information being used for time synchronization of a station and an access point under multiple connections; and using the time synchronization parameter information to control the time synchronization of the station and the access point under the multiple connections.