US 9271243

US patent 9271243 (US9271243B2), titled "Wireless access point and method and device for controlling wireless access point," was issued on February 23, 2016, from an application filed on October 19, 2011. The current assignee is Golden Eye Technologies LLC. The inventors are Byung Wan Yoon, Jae Ho Chung, Joo Young Yoon, Kyu Jeong Han, and Yung Ha Ji.

The patent describes a system for optimizing wireless access point (AP) coverage and capacity by minimizing interference, particularly in environments where multiple APs use the same channel. The core innovation lies in a centralized control device that manages AP output strength based on real-time interference detection.

Abstract:
The device for controlling a wireless access point comprises: a grouping unit which groups wireless access points which use the same channel, by using channel use information received from the wireless access points; a map generator which computes each received signal strength value of the grouped wireless access points and each output strength value of the grouped wireless access points; an extractor which extracts a wireless access point having the highest received signal strength value among the grouped wireless access points, if interference occurs between said grouped wireless access points; and an optimal output strength value-calculator which computes a corrected output strength value by using the received signal strength value of the extracted wireless access point, a threshold value of predetermined received signal strength, and a currently used output strength value between said grouped wireless access points.

Independent Claims Overview:

• Claim 1 (Device for controlling a wireless access point): This claim describes a central device that automatically manages wireless access points (APs) to reduce interference. It includes components to:

  1. Group APs that are operating on the same communication channel.
  2. Create a virtual map that records the signal strength (RSSI) between these grouped APs and their current transmission power.
  3. Identify the AP that is causing the most significant interference (by having the highest RSSI value) when interference is detected among the grouped APs.
  4. Calculate a new, adjusted transmission power level for the APs. This calculation is based on the highest RSSI value detected, a predefined threshold for acceptable signal strength, and the APs' current transmission power.

• Claim 6 (Wireless access point): This claim describes a wireless access point (AP) designed to work with the central controlling device. The AP includes:

  1. A mechanism to set its communication channel.
  2. A transmitter to discover and report information about nearby APs, as well as its own operational details.
  3. A calculator to measure the number of failed acknowledgment (ACK) communications with connected wireless terminals and the received signal strength (RSSI) from those terminals.
  4. A notifier that sends an alert to the central controlling device if it determines that interference with neighboring APs has occurred, using the measured ACK failures and RSSI values.

• Claim 11 (Method for controlling an output strength value): This claim outlines a process for cooperatively managing APs to control their output strength, involving both the APs and the central controlling device:

  1. AP Action: Each wireless access point sets its communication channel, actively searches for neighboring APs, and then sends information about itself and the discovered neighbors to the controlling device.
  2. Controlling Device Action: The controlling device organizes the APs into groups based on whether they are using the same communication channel.
  3. Grouped APs Action: The grouped APs continuously monitor their environment to determine if interference is occurring and, if so, report this to the controlling device.
  4. Controlling Device Action: Upon receiving an interference notification, the controlling device calculates a new, corrected output strength value designed to reduce the interference and then sends this new value to the relevant grouped APs.
  5. Grouped APs Action: The grouped APs receive the corrected output strength value from the controlling device and adjust their current transmission power accordingly.

CAFC 2026 Dockets:
A search for "CAFC 2026 dockets 9271243" indicates that a case involving US patent 9271243 has been filed in the Texas Eastern District Court (case 2:25-cv-00898) and a PTAB case IPR2026-00188 has been filed (Pending). The U.S. Court of Appeals for the Federal Circuit (CAFC) provides information relating to Federal Circuit cases, including opinions and orders, and electronic filing information. However, the direct search results do not specify if any appeals for US9271243 are currently active in the CAFC for 2026 beyond the general litigation information provided.US patent 9271243 (US9271243B2), titled "Wireless access point and method and device for controlling wireless access point," was issued on February 23, 2016, from an application filed on October 19, 2011. The current assignee is Golden Eye Technologies LLC. The inventors are Byung Wan Yoon, Jae Ho Chung, Joo Young Yoon, Kyu Jeong Han, and Yung Ha Ji.

The patent describes a system for optimizing wireless access point (AP) coverage and capacity by minimizing interference, particularly in environments where multiple APs use the same channel. The core innovation lies in a centralized control device that manages AP output strength based on real-time interference detection.

Abstract:
The device for controlling a wireless access point comprises: a grouping unit which groups wireless access points which use the same channel, by using channel use information received from the wireless access points; a map generator which computes each received signal strength value of the grouped wireless access points and each output strength value of the grouped wireless access points; an extractor which extracts a wireless access point having the highest received signal strength value among the grouped wireless access points, if interference occurs between said grouped wireless access points; and an optimal output strength value-calculator which computes a corrected output strength value by using the received signal strength value of the extracted wireless access point, a threshold value of predetermined received signal strength, and a currently used output strength value between said grouped wireless access points.

Independent Claims Overview:

• Claim 1 (Device for controlling a wireless access point): This claim describes a central device that automatically manages wireless access points (APs) to reduce interference. It includes components to:

  1. Group APs that are operating on the same communication channel.
  2. Create a virtual map that records the signal strength (RSSI) between these grouped APs and their current transmission power.
  3. Identify the AP that is causing the most significant interference (by having the highest RSSI value) when interference is detected among the grouped APs.
  4. Calculate a new, adjusted transmission power level for the APs. This calculation is based on the highest RSSI value detected, a predefined threshold for acceptable signal strength, and the APs' current transmission power.

• Claim 6 (Wireless access point): This claim describes a wireless access point (AP) designed to work with the central controlling device. The AP includes:

  1. A mechanism to set its communication channel.
  2. A transmitter to discover and report information about nearby APs, as well as its own operational details.
  3. A calculator to measure the number of failed acknowledgment (ACK) communications with connected wireless terminals and the received signal strength (RSSI) from those terminals.
  4. A notifier that sends an alert to the central controlling device if it determines that interference with neighboring APs has occurred, using the measured ACK failures and RSSI values.

• Claim 11 (Method for controlling an output strength value): This claim outlines a process for cooperatively managing APs to control their output strength, involving both the APs and the central controlling device:

  1. AP Action: Each wireless access point sets its communication channel, actively searches for neighboring APs, and then sends information about itself and the discovered neighbors to the controlling device.
  2. Controlling Device Action: The controlling device organizes the APs into groups based on whether they are using the same communication channel.
  3. Grouped APs Action: The grouped APs continuously monitor their environment to determine if interference is occurring and, if so, report this to the controlling device.
  4. Controlling Device Action: Upon receiving an interference notification, the controlling device calculates a new, corrected output strength value designed to reduce the interference and then sends this new value to the relevant grouped APs.
  5. Grouped APs Action: The grouped APs receive the corrected output strength value from the controlling device and adjust their current transmission power accordingly.

CAFC 2026 Dockets:
Litigation related to US9271243 includes a case filed in the Texas Eastern District Court (case 2:25-cv-00898) and a pending PTAB case IPR2026-00188. While the U.S. Court of Appeals for the Federal Circuit (CAFC) provides case information, the provided search results do not specify if any appeals concerning US9271243 are currently active in the CAFC's 2026 docket, beyond the general mention of litigation.