Secure Reassociation Protocol for Wireless Networks

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Solution Overview

Problem

Existing protocols for reestablishing connections between access points (APs) and client devices (STAs) in wireless communication networks contribute to communication overhead and pose security risks.

Innovation Solution

A secure reassociation protocol that utilizes protected management frames to facilitate a secure reassociation operation between APs and STAs, reducing the time required to reestablish a connection and enhancing security by preventing unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing reconnection protocols are used, then connection reestablishment can be achieved, but communication overhead increases and security risks arise

Engineering Contradiction:
Improveconnection securityVSAvoidreconnection time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-establishing security context and credentials during the initial association phase. When reconnection is needed, the device can quickly reauthenticate using pre-shared security parameters rather than performing full authentication sequences, thus reducing reconnection time while maintaining security.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent extracts essential security verification elements from the full authentication protocol and uses only those critical components during reconnection. By taking out only the necessary security checks rather than re-executing complete authentication sequences, the system reduces overhead and reconnection time while preserving security.

Inventive Principle:
Principle #2Taking out (Extraction)

2Productivity

If existing reconnection protocols are used, then connection can be reestablished, but communication overhead increases

Engineering Contradiction:
Improvereconnection efficiencyVSAvoidprotocol processing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent extracts and uses only the essential message exchanges needed for reconnection rather than transmitting complete authentication sequences. By removing redundant protocol steps that are unnecessary when security context is already established, communication overhead and processing time are reduced while maintaining reconnection functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies partial action by performing only the necessary subset of authentication steps required for secure reconnection. Instead of executing full authentication protocols, the system performs minimal verified steps sufficient for security, thereby improving productivity and reducing protocol processing time.

Inventive Principle:
Principle #16Partial or excessive action

3Reliability

If standard reassociation protocols are used, then reconnection can be established, but security breaches and unauthorized access become possible

Engineering Contradiction:
Improveauthentication securityVSAvoidprotocol complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts critical security verification mechanisms from complex standard protocols and implements a streamlined version that maintains essential security functions. By removing unnecessary protocol complexity while retaining core security verification steps, the system achieves strong authentication security with reduced protocol complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies preliminary action by pre-establishing security credentials and context during initial association. This allows subsequent reconnections to use simplified verification processes that maintain high security standards without requiring complex protocol sequences, thus reducing protocol complexity while preserving authentication security.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250039664A1Systems for and methods of reassociation in a network
Publication Date: 2025.01.30 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US20250039664A1 patent drawing
  • US20250039664A1 patent drawing
  • US20250039664A1 patent drawing

AI summary

Systems and methods use a protocol for a secure reassociation exchange. A first device can be used in the exchange and includes a circuit configured to provide at least one frame to a second device. The frame includes comprises a protected reassociation request message. Alternatively, frame can include a protected reassociation response message.