Patent ID: 11924911
Assignee: MEDIATEK SINGAPORE PTE. LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An apparatus, comprising:
a transceiver configured to communicate wirelessly; and
a processor coupled to the transceiver and configured to perform operations comprising:
performing, via the transceiver, a fast initial link setup (FILS) procedure to establish wireless communications between an access point (AP) multi-link device (MLD) and a non-AP station (STA) MLD over a plurality of links; and
communicating, via the transceiver, over one or more links of the plurality of links upon completion of the FILS procedure,

wherein, in communicating, the processor is configured to communicate a retransmitted frame with a Key identifier (ID) field in a Galois/Counter Mode Protocol (GCMP) header of the frame being equal to a Key ID field of a first transmitted medium access control (MAC) protocol data unit (MPDU), and
wherein, in performing the FILS procedure, the processor, implemented in the AP MLD, performs an association or reassociation procedure by:
generating an association or reassociation response frame by constructing a Key Delivery element indicating:
a current group temporal key (GTK) and key receive sequence counter (RSC) associated with each link of the plurality of links,
a current integrity group temporal key (IGTK) and IGTK packet number (IPN) associated with each link of the plurality of links in an event that management frame protection is enabled, and
a current beacon integrity group temporal key (BIGTK) and BIGTK packet number (BIPN) associated with each link of the plurality of links in an event that beacon protection is enabled; and

transmitting the association or reassociation response frame to the non-AP STA MLD.