Session Timeout Renewal for Non-Disruptive Wireless Sessions

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Solution Overview

Problem

Existing wireless networks disrupt user experience by abruptly terminating sessions due to hard maximum session duration limits, especially in time-sensitive applications like VR/AR and connected factories, without user awareness or proactive session renewal.

Innovation Solution

Implementing a system that informs client devices about maximum session duration and allows them to renew sessions proactively, using unsolicited action frames and adaptive session timeout management to avoid disruptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hard maximum session duration limits are enforced, then network security and resource management are improved, but user experience is degraded due to abrupt session termination

Engineering Contradiction:

Improvenetwork securityVSAvoiduser experience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary action by notifying the client device of the upcoming session timeout before it actually occurs. The access point sends a notification message to the client device indicating the session timeout is approaching, allowing the client device to proactively initiate session renewal or graceful disconnection before the hard limit is reached, thus avoiding abrupt termination and improving user experience while maintaining security constraints

Inventive Principle:

Principle #10Preliminary action

2Duration of action of moving object

If session duration is extended, then user experience is improved, but network resource management deteriorates due to prolonged resource allocation

Engineering Contradiction:

Improvesession durationVSAvoidnetwork resources

Core Design Contradiction:

Duration of action of moving objectVSQuantity of substance

Solution Approach 1:

The system applies dynamics by making session duration flexible rather than fixed. Instead of enforcing a rigid hard timeout, the access point dynamically adjusts session duration based on client device requests for extension. The access point can grant additional time to client devices that need it, while still enforcing the maximum session duration limit, allowing optimal resource utilization while accommodating varying user needs

Inventive Principle:

Principle #15Dynamics

3Stability of the object's composition

If proactive session renewal is implemented, then session continuity is improved, but system complexity increases due to additional messaging and state tracking

Engineering Contradiction:

Improvesession continuityVSAvoidsystem complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The system implements feedback by establishing a communication loop between the access point and client device regarding session status. The access point notifies the client device when timeout is approaching, and the client device can request session extension based on its needs. This feedback mechanism enables coordinated session management that maintains continuity while distributing the complexity burden between access point and client device

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12470633B2Non-disruptive session timeout

Publication Date: 2025.11.11 CISCO TECHNOLOGY INC

AI summary

A client device may receive, from a computing device, a message indicating that a session duration of a current session is nearly over. The client device may close the current session as soon as the client device is idle for more than a configurable interval. A new session may be started with the computing device by the client device.