US 12,764,814 B2 · Triggered multi-link access coordination

Abstract

Embodiments are disclosed for triggered multi-link (ML) access coordination. A station (STA) ML device (MLD) can establish a preferred triggering link (PTL) with an access point (AP) MLD where the PTL is the preferred link for receiving triggering frames. The STA MLD can transmit uplink (UL) frames via the PTL in response to a trigger frame. Subsequently, the STA MLD can determine that the PTL is busy, and transmit enhanced distributed channel access (EDCA) UL frames on a non-PTL link. In a power save mode, the STA MLD can use the PTL to exchange UL and downlink (DL) frames. Multiple PTLs can be established supporting concurrent trigger frames, and different ranges of traffic IDs (TIDs) can be used for each PTL. The STA MLD can utilize AP MLD link pair information to receive a DL retransmission corresponding to one TID via both links of the AP MLD link pair.

Claims20

Dependent claims

A station (STA) multi-link device (MLD), comprising:

a first transceiver and a second transceiver;
and
a processor communicatively coupled to the first transceiver and the second transceiver, configured to:
transmit, via the first transceiver, an indication that a preferred triggering link (PTL) is associated with a first link of the STA MLD, wherein the first link is associated with the first transceiver, wherein a second link of the STA MLD is associated with the second transceiver;
receive, via the PTL, a first trigger frame;
subsequent to receiving the first trigger frame, transmit, via the PTL, one or more first uplink (UL) frames comprising first UL data stored in a buffer associated with the PTL;
obtain a second UL frame for transmission, wherein STAs of the STA MLD are in a power save mode;
and
activate a first STA of the STAs to transmit the second UL frame via the PTL, wherein the first STA comprises the first transceiver corresponding to the PTL.

6 more elements

An access point (AP) multi-link device (MLD), comprising:

a first transceiver and a second transceiver;
and
a processor communicatively coupled to the first transceiver and the second transceiver, configured to:
receive, via the first transceiver, an indication that a preferred triggering link (PTL) is associated with a first link of a station (STA) MLD, wherein the first link is associated with the first transceiver, wherein a second link of the STA MLD is associated with the second transceiver;
transmit, via the PTL, a first trigger frame;
subsequent to transmitting the first trigger frame, receive, via the PTL, one or more first uplink (UL) frames comprising UL data stored in a buffer associated with the PTL;
and
receive, via the PTL, a second UL frame comprising a signal indicating that the AP MLD can send buffered downlink (DL) data to the STA MLD.

5 more elements

Dependencies are inferred from the claim text.

Triggered multi-link access coordination

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Triggered multi-link access coordination

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Abstract

Claims20