Client Device Backoff Mechanism for Wireless Reconnection Congestion
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Solution Overview
Problem
In environments with numerous wireless devices, such as warehouses, simultaneous reconnection attempts after outages or configuration changes can lead to network congestion and negative impacts on service infrastructure due to sudden increases in load.
Innovation Solution
Client devices generate impact indicators representing predicted loads on services and, if exceeding a threshold, increment their connection intervals using a backoff mechanism to delay reconnection attempts, thereby mitigating the impact on service infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless devices attempt to reconnect simultaneously after outages, then reconnection speed is improved, but network congestion and service infrastructure impact worsen
Solution Approach 1:
The patent implements periodic action by introducing exponential backoff intervals between reconnection attempts. Devices wait for progressively longer periods (doubling the wait time with each failed attempt) before retrying connections. This periodic delay strategy spreads out reconnection requests over time, preventing simultaneous bursts that cause network congestion while still achieving eventual reconnection for all devices.
2Reliability
If numerous devices reconnect simultaneously, then service availability is improved, but service infrastructure load worsens
Solution Approach 1:
The patent applies segmentation by dividing the simultaneous reconnection event into staggered, individual connection attempts. Each device independently calculates and applies its own backoff interval, segmenting the collective reconnection load into manageable time-separated requests. This ensures service availability is maintained for all devices while preventing infrastructure overload that would occur with synchronized reconnection attempts.
Data Source
AI summary
A method in a client device of mitigating connection impact on service infrastructure includes: prior to initiating a connection to a service, generating an impact indicator corresponding to the service, the impact indicator representing a predicted load at the service; determining whether the impact indicator exceeds an impact threshold; when the impact indicator exceeds the impact threshold, incrementing a connection interval according to a backoff interval; and initiating a connection with the service upon expiry of the connection interval.