Multi-band Communication Interface Parameter Update

The patent applies preliminary action by pre-establishing associations between the station device and multiple access points across different frequency bands before switching is needed. The station device receives multi-band elements containing association information for multiple APs in advance, so when switching is required, it can immediately use the pre-established association without performing time-consuming authentication procedures. This resolves the contradiction by preparing switching resources beforehand, ensuring communication quality through multiple pre-qualified APs while minimizing actual switching time.

The patent applies merging by consolidating multiple association relationships and their corresponding key derivation information into a single multi-band element structure. Instead of managing separate association procedures for each access point, the station device receives all necessary association information (including BSS identifiers, frequency band information, and security parameters) for multiple APs within one unified data structure. This reduces processing overhead and simplifies device complexity while enabling fast switching capability through the integrated information.

The patent applies universality by designing the multi-band element structure to serve multiple functions simultaneously. The same multi-band element not only provides association information for multiple access points but also contains embedded interface parameters (such as channel bandwidth, subcarrier spacing, and cyclic prefix length) that are universally applicable across different frequency bands and link configurations. This allows the system to implement multi-link aggregation for improved transmission rate while using a single unified parameter set, thereby reducing interface parameter management complexity and processing overhead.