US 12004262

Here's a concise summary of US Patent 12004262:

US Patent Number: US12004262B2

Title: Wireless communication method using BSS identifier and wireless communication terminal using same

Current Assignee: Wilus Institute of Standards and Technology Inc

Inventors: Geonjung KO, Woojin AHN, Juhyung Son, Jinsam Kwak

Filing Date: 2022-02-11

Issue Date: 2024-06-04

Abstract:
A wireless communication method using a Basic Service Set (BSS) identifier and a wireless communication terminal using the same are disclosed. According to an embodiment, a wireless communication method for a base wireless communication terminal involves generating a trigger frame to initiate uplink transmission-based random access from at least one wireless communication terminal. This trigger frame is then inserted into a physical layer protocol data unit (PPDU) for transmission.

Plain-Language Overview of Independent Claims:

• Claim 1 (Wireless Communication Method of a Base Wireless Communication Terminal): This claim describes a method for a central wireless communication device (like an access point) that sends out a "trigger frame." This trigger frame is designed to cause other wireless devices to perform a random uplink transmission (sending data up to the central device). The method includes generating this trigger frame and putting it into a data packet called a Physical Layer Protocol Data Unit (PPDU) for transmission.

• Claim 10 (Wireless Communication Terminal): This claim describes a wireless communication device (like a client station) that communicates with a central wireless device. This device has a transceiver for sending and receiving signals and a processor to handle these signals. The processor is set up to receive a PPDU that contains a trigger frame, which is meant to initiate transmission back to the central device. Based on this received trigger frame, the wireless communication terminal then transmits its own "trigger-based PPDU."

• Claim 15 (Base Wireless Communication Terminal): This claim describes the central wireless communication device itself. It includes a transceiver for sending and receiving wireless signals and a processor for processing them. The processor is configured to perform two key actions: first, it generates a trigger frame that is designed to prompt at least one other wireless communication terminal to perform an uplink transmission via random access. Second, it inserts this trigger frame into a PPDU and transmits that PPDU.

Legal Status and Litigation:
The patent US12004262B2 is currently active, with an anticipated expiration date of 2038-04-16.

Several litigation cases are associated with this patent:

• A PTAB (Patent Trial and Appeal Board) case, IPR2025-01164, has been filed and is currently pending and instituted.
• Two US district court cases have been filed in the Texas Eastern District Court: 2:25-cv-00070 and 2:25-cv-00069.
• The first worldwide family litigation for this patent family has also been filed.

As of April 26, 2026, no dockets specifically for US12004262 have been found in the CAFC (Court of Appeals for the Federal Circuit) 2026 records. Given the filing dates of the district court and PTAB cases in 2025, it is expected that any appeals would typically occur later than the current date.