Critical bss parameter management method applicable to multiple link and related apparatus

A communication apparatus, comprising:

• a transceiver;
• at least one processor;
• and
• at least one memory coupled to the at least one processor and storing programming instructions for execution by the at least one processor and causing the communications apparatus to:
• generate a first frame, wherein the first frame indicates critical basic service set (BSS) parameter update information respectively corresponding to a plurality of APs in a first AP MLD and critical BSS parameter update information respectively corresponding to a plurality of APs in a second AP MLD, the second AP MLD is an AP MLD to which a nontransmitted AP belongs, the nontransmitted AP is in a multiple basic service set identifier BSSID set on which a first AP in the first AP MLD is located, and one piece of critical BSS parameter update information corresponding to an AP is used to determine whether a critical BSS parameter in a BSS managed by the AP is updated;
• and
• send the first frame on a link on which the first AP works.

A first access point multi-link device (AP MLD) including a first AP and a second AP, the first AP comprising:

• a transceiver;
• at least one processor;
• and
• at least one memory coupled to the at least one processor and storing programming instructions for execution by the at least one processor and causing the first AP to:
• generate a first frame, wherein the first frame indicates critical basic service set (BSS) parameter update information respectively corresponding to a plurality of APs in a first AP MLD and critical BSS parameter update information respectively corresponding to a plurality of APs in a second AP MLD, the second AP MLD is an AP MLD to which a nontransmitted AP belongs, the nontransmitted AP is in a multiple basic service set identifier BSSID set on which a first AP in the first AP MLD is located, and one piece of critical BSS parameter update information corresponding to an AP is used to determine whether a critical BSS parameter in a BSS managed by the AP is updated;
• and
• send the first frame on a link on which the first AP works.