L4S Congestion Control Algorithm for Network Access Points
Summary
US20260113272A1, a patent application filed 2024-10-21 by inventors JIANPO HAN, MOHD SHAHNAWAZ SIRAJ, ANDRE BEAUDIN, and OMAR EL FERKOUSS, was published on April 23, 2026. The application discloses systems and methods for implementing enhanced Low Latency, Low Loss, and Scalable throughput (L4S) mechanisms at network bottleneck nodes, such as access points, to detect and more selectively address congestion through access category queue watermarks and selective congestion experienced packet marking.
“Systems and methods are provided for implementing enhanced Low Latency, Low Loss, and Scalable throughput (L4S) mechanisms at a bottleneck network node to detect and more accurately/selectively address congestion.”
About this source
USPTO classification H04L covers transmission of digital information: network protocols, modulation schemes, wireless signal processing, coding, encryption in transit, and multiplexing. With 5G, 6G, and satellite internet driving new filings, H04L is one of the largest active patent classes. Every newly published application in H04L lands in this feed, around 215 a month. Applications publish 18 months after filing, so this feed reveals what MediaTek, Qualcomm, Ericsson, Samsung, Huawei, and dozens of smaller companies were working on in the prior year and a half. Watch this if you compete in networking hardware, advise telecoms on IP strategy, or scout acquisition targets in wireless infrastructure.
What changed
USPTO published patent application US20260113272A1 on April 23, 2026, disclosing systems and methods for enhanced L4S congestion control at network bottleneck nodes. The invention uses low and high watermark limits for access category queues at access points, analyzes incoming packet priority, and selectively marks packets with a congestion experienced indication based on queue state.\n\nAs a published patent application rather than a granted patent, this document does not impose compliance obligations. However, it provides public notice of the technical approach and scope of potential future IP claims in the L4S networking space.
Archived snapshot
Apr 24, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
L4S CONGESTION CONTROL ALGORITHM FOR AP
Application US20260113272A1 Kind: A1 Apr 23, 2026
Inventors
JIANPO HAN, MOHD SHAHNAWAZ SIRAJ, ANDRE BEAUDIN, OMAR EL FERKOUSS
Abstract
Systems and methods are provided for implementing enhanced Low Latency, Low Loss, and Scalable throughput (L4S) mechanisms at a bottleneck network node to detect and more accurately/selectively address congestion. Low and high watermark limits can be established for access category (AC) queues at the bottleneck network node, such as an access point (AP). Incoming packets can be analyzed to determine their priority, and then assigned to an AC queue. Depending on the state of a queue (whose thresholds can differ) packets can be marked or not marked with a “congestion experienced” (CE) indication. Additionally, if a congestion indication is received by an AP from a receiver application, but the congestion no longer exists, the AP can forgo forwarding this feedback upstream.
CPC Classifications
H04L 47/12
Filing Date
2024-10-21
Application No.
18921411
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