US 11664926

Here is a concise summary of US Patent 11664926:

US Patent 11664926 Summary

• Title: Aggregated-MPDU, method for transmitting response frame thereto, and wireless communication terminal using same
• Assignee: Wilus Institute of Standards and Technology Inc
• Inventors: Woojin AHN, Juhyung Son, Geonjung KO, Jinsam Kwak
• Filing Date: January 25, 2021
• Issue Date: May 30, 2023
• Abstract: The patent describes a wireless communication method and a wireless communication terminal for setting various formats of Aggregate MAC Protocol Data Units (A-MPDUs) and their corresponding response frames to perform efficient data communication. The invention aims to provide high-efficiency/high-performance wireless LAN communication in high-density environments. The method involves a processor generating an A-MPDU, transmitting it to a recipient, receiving a response frame, and determining the success of MPDU transmissions within the A-MPDU based on the received response frame.

Plain-Language Overview of Independent Claims:

The patent contains four independent claims (Claims 1, 9, 10, and 18).

• Independent Claim 1: This claim describes a wireless communication terminal (e.g., a device like a smartphone or laptop) that has a processor and a communication unit. The terminal's processor is configured to:

  1. Create an Aggregate MAC Protocol Data Unit (A-MPDU) that includes one or more MAC Protocol Data Units (MPDUs) which specifically request an immediate acknowledgment.
  2. Send this A-MPDU to another device (recipient).
  3. Receive a response frame from the recipient that corresponds to the A-MPDU.
  4. Determine if the MPDU(s) sent within the A-MPDU were successfully transmitted based on the content of the received response frame.

• Independent Claim 9: This claim describes a wireless communication method performed by a wireless communication terminal. The method involves the following steps:

  1. Generating an Aggregate MAC Protocol Data Unit (A-MPDU) that contains one or more MAC Protocol Data Units (MPDUs) which request an immediate response.
  2. Transmitting the generated A-MPDU to a recipient device.
  3. Receiving a response frame from the recipient, which corresponds to the A-MPDU.
  4. Determining whether the transmission of the MPDU(s) within the A-MPDU was successful based on the information in the received response frame.

• Independent Claim 10: This claim describes a wireless communication terminal that includes a processor and a communication unit. The processor in this terminal is configured to:

  1. Receive an Aggregate MAC Protocol Data Unit (A-MPDU) that is made up of one or more MPDUs.
  2. Decide what format the response frame for the received A-MPDU should take.
  3. Transmit a response frame using the determined format.

• Independent Claim 18: This claim describes a wireless communication method performed by a wireless communication terminal. The method involves the following steps:

  1. Receiving an Aggregate MAC Protocol Data Unit (A-MPDU) that consists of one or more MPDUs.
  2. Determining the appropriate format for a response frame that will acknowledge the received A-MPDU.
  3. Transmitting a response frame in the format that was determined.

Litigation Status:

As of April 26, 2026, the patent 11664926 is involved in litigation.

• A PTAB (Patent Trial and Appeal Board) case, IPR2025-01165, was filed and is currently pending with institution. The petitioner is "Unified Patents PTAB Data".
• There are also multiple US cases filed in the Texas Eastern District Court: 2:25-cv-00070, 2:25-cv-00069, and 2:24-cv-00766.
• The first worldwide family litigation was filed as well.

(No specific results from CAFC dockets for 2026 were found in the provided information, but the PTAB and District Court cases are noted.)