US 11818591

Here's a concise summary of US Patent 11818591:

Patent Number: US11818591B2

Title: Method and apparatus for processing bandwidth intensive data streams using virtual media access control and physical layers

Assignee: Xifi Networks R and D Inc

Inventor: Sai C. Manapragada

Filing Date: September 7, 2021 (for application US17/468,509, which matured into this patent)

Issue Date: November 14, 2023

Abstract:
A wireless networking system is disclosed. The system includes an application layer with applications having wireless bandwidth requirements. It employs first and second wireless transceiver resources, each associated with an actual MAC and PHY layer and having specific bandwidth availabilities. A processing layer evaluates these bandwidth requirements and availabilities. This processing layer, which includes a bandwidth allocator, then allocates portions of the first and second actual bandwidths to virtual MAC and virtual PHY layers to satisfy the application layer's wireless bandwidth requirement.

Plain-language Overview of Independent Claims:

• Claim 1 (Independent): This claim describes a wireless networking device. It has an application interface connected to a processing interface, where the application interface is linked to a first application requiring a certain wireless bandwidth. The device also includes three actual MAC interfaces and three actual PHY interfaces, each connected to the processing interface and associated with distinct wireless transceivers. These transceivers are suitable for use in a wireless local area network, have their own bandwidth availabilities, and emit radio waves in different frequency bands, with two being higher than the first. The processing interface contains at least one virtual MAC interface and three virtual PHY interfaces. During operation, these virtual PHY interfaces provide feedback on transceiver bandwidth availability to the virtual MAC interface. The processing interface is configured to, transparently to higher layers, request or create associations between a recipient and the actual MAC/PHY interfaces. It identifies and evaluates available portions of the transceiver bandwidths against the first application's requirement. If the requirement is at least partially met by a selected two of the three transceivers, the device prepares the data stream for simultaneous transmission from these two selected transceivers using specific frequency subsets of their available bandwidth. This transmission partially satisfies the application's bandwidth need. Crucially, the device's use of bandwidth does not prevent other wireless devices from using the remaining available frequencies simultaneously.

CAFC 2026 Dockets:
A search of CAFC 2026 dockets for US patent 11818591 did not return any specific, directly related case entries as of April 26, 2026. The search results provided general information about CAFC activities and other patent cases in 2026. It is noted that Google Patents indicates an "Active" legal status for US11818591B2 and mentions "PTAB case IPR2025-01204 filed (Pending - Instituted)" and "US case filed in Texas Eastern District Court" (2:24-cv-01057) under its legal status section, implying litigation, but these specific court or PTAB cases were not found in the CAFC 2026 dockets during the search.