US 12,495,332 B2
Multi-link traffic steering with traffic indication map
Laurent Cariou, Milizac (FR); Minyoung Park, San Ramon, CA (US); Po-Kai Huang, San Jose, CA (US); and Alexander Min, Portland, OR (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Sep. 29, 2023, as Appl. No. 18/477,904.
Application 18/477,904 is a continuation of application No. 17/067,740, filed on Oct. 11, 2020, abandoned.
Claims priority of provisional application 62/913,948, filed on Oct. 11, 2019.
Prior Publication US 2024/0031871 A1, Jan. 25, 2024
Int. Cl. H04W 28/12 (2009.01); H04L 1/1607 (2023.01)
CPC H04W 28/12 (2013.01) [H04L 1/1614 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An access point multi-link device, the access point multi-link device comprising processing circuitry coupled to storage, the processing circuitry configured to:
generate a traffic indication map (TIM) bitmap comprising a first bit indicating whether the access point multi-link device (AP MLD) has buffered traffic for a station multi-link device (STA MLD) on a first communication link between a first logical AP entity of the AP MLD and a first logical STA entity of the STA MLD;
generate a beacon comprising the TIM bitmap, wherein the TIM bitmap includes at least one bit per link for the STA MLD, and the bit values indicate whether buffered traffic is available on respective links and a preferred link for delivery;
transmit the beacon using the first communication link or a second communication link between a second logical AP entity of the AP MLD and a second logical STA entity of the STA MLD;
identify a power save poll or an unscheduled automatic power save delivery (U-APSD) trigger frame received from the STA MLD in response to the beacon; and
transmit the buffered traffic using at least one of the first communication link or the second communication link in response to receiving the power save poll or the U-APSD trigger frame.