Wireless Access Point Handoff Using Shared MAC Addressing

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Solution Overview

Problem

Wireless networks face disruptions and connectivity issues due to changes in the RF environment, such as user movement or obstruction of RF signals, leading to inefficient handoff of wireless client devices between access points, which can cause network connectivity loss and application restarts.

Innovation Solution

Implementing a system where wireless access points share a common MAC address, IP address, and encryption information, allowing seamless handoff by negotiating transitions based on signal channel characteristics, using test packets and AI/machine learning for optimal transitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wireless access points use different media access control addresses when handoff occurs, then the access point can be identified and switched, but the client device loses connectivity and requires manual reconnection

Engineering Contradiction:

Improveconnectivity continuityVSAvoidaddress management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a copy of the original media access control address and uses this copied address for the handoff access point. When a client device connects to a first access point, the system generates a second media access control address that is a copy of the first. The second access point then uses this copied address to communicate with the client device, ensuring the client perceives continuous connectivity while enabling seamless handoff between access points.

Inventive Principle:

Principle #26Copying

2Reliability

If manual reconnection is required when switching access points, then security can be maintained through reauthentication, but user experience deteriorates due to connection disruption

Engineering Contradiction:

Improveconnection stabilityVSAvoiduser interaction requirement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent performs preliminary actions by pre-establishing the second media access control address as a copy of the first address before the handoff occurs. This allows the second access point to be pre-configured with the necessary addressing information, enabling seamless transition without requiring user intervention or manual reconnection actions when the client device switches access points.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If access points frequently handoff client devices based on signal fluctuations, then connection quality can be optimized, but network stability deteriorates due to frequent reconnections

Engineering Contradiction:

Improveconnection qualityVSAvoidnetwork stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent implements beforehand cushioning by creating a buffer through the copied media access control address. This copied address acts as a cushion that absorbs the impact of handoff transitions, allowing the system to optimize connection quality through access point switching while maintaining network stability. The cushioning effect prevents frequent signal fluctuations from causing disruptive reconnections, as the copied address ensures continuous address consistency during transitions.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12621720B2Systems and methods to extend wireless access range

Publication Date: 2026.05.05 CENTURYLINK INTELLECTUAL PROPERTY LLC

AI summary

In a wireless network, the radio frequency (RF) environment of devices that are part of the network may change, for example, as portable devices are moved by users, or as other objects (which may obstruct or reflect RF signals) move within the environment. As such, systems and methods to extend wireless access range are provided.