US 2026/0059387 A1Published application

Physical layer latency reduction

AssigneeQUALCOMM Incorporated

InventorsLin YANG, Bin TIAN, Youhan KIM, Sameer VERMANI

Life of this patent

Estimating the term…

Loading patent…

Abstract

This disclosure provides methods, components, devices and systems for physical layer (PHY) latency reduction. Some aspects more specifically relate to PHY protocol data unit (PPDU) designs that support inserting low-latency traffic into a transmission opportunity (TXOP) occupied by non-low-latency traffic. In some implementations, during a TXOP, an access point (AP) may output an aggregated PPDU (A-PPDU) that is aggregated in a time domain and includes an A-PPDU header and one or more A-PPDU subframes. The AP may obtain, from an application layer, a low-latency PPDU (LL-PPDU) subframe and may insert the LL-PPDU subframe in place of at least one of the one or more A-PPDU subframes. The AP may output the LL-PPDU subframe during the TXOP. A wireless station (STA) receiving the A-PPDU header and the one or more A-PPDU subframes may detect the presence of the LL-PPDU subframe and may receive and decode the LL-PPDU subframe.

Claims24

Dependent claims

A wireless device, comprising:

at least one transceiver;
and
a processing system that includes processor circuitry and memory circuitry that stores code executable by the processor circuitry to cause the wireless device to:
identify a transmission opportunity associated with at least one subchannel of a wireless channel;
transmit, via the at least one transceiver, via the at least one subchannel and during the transmission opportunity, a first portion of a packet that includes an aggregated physical layer control protocol (PLCP) protocol data unit (PPDU) (A-PPDU) header and a first subset of A-PPDU subframes of a set of A-PPDU subframes, the set of A-PPDU subframes being aggregated in a time domain;
insert a low-latency PPDU (LL-PPDU) subframe associated with latency-sensitive traffic that preempts at least one A-PPDU subframe of a second subset of A-PPDU subframes of the set of A-PPDU subframes or preempts a random access resource unit (RA-RU) in accordance with the latency-sensitive traffic;
and
transmit, via the at least one transceiver to an access point (AP), via the at least one subchannel and during the transmission opportunity, a second portion of the packet that includes the LL-PPDU subframe and the second subset of A-PPDU subframes.

5 more elements

A wireless device, comprising:

at least one transceiver;
and
a processing system that includes processor circuitry and memory circuitry that stores code executable by the processor circuitry to cause the wireless device to:
identify a transmission opportunity associated with communication via at least one subchannel of a wireless channel;
receive, via the at least one transceiver and via the at least one subchannel during the transmission opportunity, a first portion of a packet that includes an aggregated physical layer control protocol (PLCP) protocol data unit (PPDU) (A-PPDU) header and a first subset of A-PPDU subframes of a set of A-PPDU subframes, the set of A-PPDU subframes aggregated in a time domain of the wireless channel, wherein a low-latency PPDU (LL-PPDU) subframe associated with latency-sensitive traffic preempts at least one A-PPDU subframe of a second subset of A-PPDU subframes of the set of A-PPDU subframes;
receive, via the at least one transceiver and via the at least one subchannel and during the transmission opportunity or a random access resource unit (RA-RU), a second portion of the packet that includes the LL-PPDU subframe and the second subset of A-PPDU subframes of the set of A-PPDU subframes in accordance with the A-PPDU header;
and
decode the LL-PPDU subframe in accordance the receiving.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/316,852Filed 2 Sep 2025
Priority: 6 Apr 2023
Published: 26 Feb 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04W 28/0975
Quality of Service [QoS] parameters: for reducing delays
H04L 5/0007
Time-frequency: the frequencies being orthogonal, e.g. OFDM or DMT
H04L 5/0044
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
H04L 5/0064
Allocation criteria: rate requirement of the data, e.g. scalable bandwidth, data priority

Family

Application18/296,772Continuation · filed 6 Apr 2023
Application19/316,852Continuation
US 12,425,921 B2Related patent
US 2024/0340701 A1Published application
US 2026/0059387 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key