Multi-Link WLAN Roaming Using Temporary AP Link Addition

The patent applies preliminary action by establishing the temporary link with the target AP before releasing the current link. The STA performs link addition to the target AP in advance, ensuring connectivity is secured before transitioning away from the current AP. This preliminary establishment of the new link reduces roaming interruption and enhances reliability, while the structured sequence of operations helps manage complexity.

The patent implements feedback mechanisms through confirmation frames exchanged between the STA and APs during the roaming process. The target AP provides feedback on link establishment status, and the STA uses this feedback to determine when to proceed with link deletion. This feedback loop ensures reliable link management while reducing complexity by providing clear state transition signals.

The patent achieves universality by designing a roaming mechanism that works across different AP groups and supports both single-link and multi-link operations. The link addition/deletion framework is generic and can be applied regardless of the number of links or AP group configurations, providing flexible roaming capability while managing protocol complexity through a unified approach.

The patent applies dynamics by enabling the STA to dynamically add and remove links based on roaming needs and network conditions. The temporary link lifetime is dynamically determined, and the STA can adaptively manage its link portfolio during roaming. This dynamic approach enhances flexibility while the structured procedures help control implementation complexity.