US 2025/0063596 A1 · LOW LATENCY CHANNEL ACCESS

Abstract

This disclosure provides methods, components, devices and systems for low latency channel access. Some aspects more specifically relate to preemption of existing transmission opportunities (TXOPs) such that devices with low latency traffic to transmit may access the communication medium to transmit low latency traffic. Short physical layer protocol data units (PPDUs) may be used within TXOPs with interframe spaces between the PPDUs such that a device with low latency traffic may transmit a preemption indication during the interframe space. A first wireless communication device may identify low latency traffic during a first PPDU of a TXOP assigned to a second wireless communication device. The first wireless communication device may transmit a preemption indication in an interframe space that indicates that a subsequent scheduled PPDU in the TXOP will be preempted in order for the first wireless communication device to transmit a PPDU to convey the low latency traffic.

Claims30

Dependent claims

A first wireless communication device, comprising:

one or more memories storing processor-executable code;
and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first wireless communication device to:
transmit, in an interframe space between an end time of a first physical layer protocol data unit from a second wireless communication device and a scheduled start time for a second physical layer protocol data unit from the second wireless communication device, a preemption indication associated with low latency data at the first wireless communication device, wherein the first physical layer protocol data unit and the second physical layer protocol data unit are scheduled within a transmission opportunity associated with the second wireless communication device;
and
transmit, based at least in part on the preemption indication, a third physical layer protocol data unit, wherein the third physical layer protocol data unit preempts the second physical layer protocol data unit within the transmission opportunity.

3 more elements

A second wireless communication device, comprising:

one or more memories storing processor-executable code;
and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the second wireless communication device to:
receive, from a first wireless communication device in an interframe space between an end time of a first physical layer protocol data unit from the second wireless communication device and a scheduled start time for a second physical layer protocol data unit from the second wireless communication device, a preemption indication associated with low latency data at the first wireless communication device, wherein the first physical layer protocol data unit and the second physical layer protocol data unit are scheduled within a transmission opportunity associated with the second wireless communication device;
and
receive, from the first wireless communication device and based at least in part on the preemption indication, a third physical layer protocol data unit, wherein the third physical layer protocol data unit preempts the second physical layer protocol data unit within the transmission opportunity.

3 more elements

Dependencies are inferred from the claim text.

Low latency channel access

Life of this patent

Low latency channel access

Life of this patent

Abstract

Claims30