WLAN Multi-Link Roaming Using Grouped Neighbor AP Parameters
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Solution Overview
Problem
Current multi-link devices in WLANs face challenges with complex link setups, particularly for non-access point multi-link devices, leading to difficulties in roaming due to the inability to distinguish which access points belong to the same device, resulting in unsuccessful roaming attempts.
Innovation Solution
An access point device sends a frame containing groups of access point parameters to a non-access point device, allowing the non-access point device to identify which neighbor access points belong to the same device, facilitating proper roaming by selecting an appropriate access point based on these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the access point device provides parameters of multiple access points individually, then the non-access point device can obtain complete parameter information, but the non-access point device cannot distinguish which access points belong to the same device
Solution Approach 1:
The patent combines parameters of multiple access points that belong to the same neighbor device into a single group within the first frame. This grouping allows the non-AP multi-link device to receive complete parameter information while simultaneously identifying which access points belong to the same device, thus resolving the contradiction between information completeness and roaming capability.
2Adaptability or versatility
If the link setup between non-access point multi-link device and access point multi-link device is complex, then multiple links can be established across different frequency bands, but the non-access point device cannot implement roaming
Solution Approach 1:
The patent segments the parameter information by organizing it into groups, where each group contains parameters of multiple access points belonging to the same neighbor device. This segmentation approach simplifies the complex multi-link setup by providing structured information that enables the non-AP multi-link device to perform roaming operations across different frequency bands effectively.
Data Source
AI summary
A communication method and system in a WLAN, and an apparatus, are disclosed. An access point device sends a first frame to a non-access point device. The first frame includes one or more groups of access point parameters. At least one group of the access point parameters includes parameters of a plurality of access points belonging to one neighbor device. The neighbor device is an access point multi-link device. The non-access point device is associated with the access point device.