Direct Wireless Group Owner Handover for Session Continuity

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Solution Overview

Problem

Existing wireless communication technologies like IEEE 802.3 Ethernet and Wi-Fi Direct face challenges in maintaining continuous communication sessions, particularly when the group owner leaves, leading to potential disruptions and security vulnerabilities.

Innovation Solution

A method for direct wireless communication within a communication group that involves appointing a second device as the group owner upon detection of the first device's intent to leave, ensuring seamless transition and maintaining or reestablishing the communication session.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If Wi-Fi Direct technology is used to provide higher bandwidth, then communication speed is improved, but communication reliability deteriorates when group owner leaves

Engineering Contradiction:

Improvecommunication speedVSAvoidcommunication reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent applies preliminary action by having the first group owner notify second group clients in advance before actually leaving the communication session. This advance notification allows the system to prepare for the transition, select a new group owner, and establish new connections before the original session is terminated, thereby maintaining communication reliability while preserving the high-speed Wi-Fi Direct connection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements beforehand cushioning by establishing backup connections between second group clients and the new group owner before the first group owner departs. This cushioning mechanism ensures that if the original group owner leaves, the communication session can continue uninterrupted through the pre-established backup connections, thus maintaining reliability without sacrificing the high bandwidth capability.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Adaptability or versatility

If group owner leaves communication session, then communication flexibility is improved, but communication continuity deteriorates

Engineering Contradiction:

Improvecommunication flexibilityVSAvoidcommunication continuity

Core Design Contradiction:

Adaptability or versatilityVSDuration of action of stationary object

Solution Approach 1:

The patent uses preliminary action by having the departing group owner proactively notify other group clients before actually leaving the session. This advance warning allows the system to initiate the transition process early, select a new group owner, and establish replacement connections before the original session ends, thus maintaining continuity while enabling flexible owner changes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuity of useful action by maintaining the communication session alive during the transition period. The system establishes new connections between second group clients and the new group owner while the old session is still active, and only terminates the old session after the new connections are established. This overlapping approach guarantees continuous communication without interruption, preserving both flexibility and continuity.

Inventive Principle:

Principle #20Continuity of useful action

3Reliability

If de-authentication is used to terminate session, then security is improved, but communication delay increases

Engineering Contradiction:

ImprovesecurityVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having the first group owner notify second group clients in advance of their departure. This advance notification allows the system to prepare for session termination and transition before actual de-authentication occurs. By preparing the new group owner and establishing backup connections in advance, the actual de-authentication process can be executed more quickly and efficiently, reducing the overall communication delay while maintaining security.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4665081A1Apparatus, computer-readable data carrier, computer program, and methods for direct wireless communication

Publication Date: 2025.12.17 CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH

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AI summary

Embodiments relate to an apparatus, a computer-readable data carrier, a computer program, and methods for direct wireless communication. The method comprises appointing a first device as the group owner of the communication group. Further, the method comprises appointing a second device of the communication group as the group owner. Also, the method includes maintaining the communication session or reestablishing a communication session for the communication group with the second device as the group owner if the first device leaves the communication session.