Priority-Based Device Re-Registration After Network Outages
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Solution Overview
Problem
In large networks, the simultaneous re-registration of numerous devices following a network outage causes congestion and delays crucial devices from re-joining the network, potentially leading to dangerous consequences, such as in hospitals or broadcast studios.
Innovation Solution
A method for device registration that assigns priority levels to devices, allowing them to re-join the network in an ordered manner based on their criticality, using specific registration settings like back-off and retry periods tailored to each priority level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all devices attempt to re-register on the network simultaneously after a power outage or failure, then the network can be quickly restored, but network congestion occurs and many devices fail to re-register
Solution Approach 1:
The patent segments the device registration process into different time slots based on device priority levels. Critical devices register first in an initial time slot, while non-critical devices register in subsequent time slots. This segmentation prevents simultaneous registration attempts and reduces network congestion while ensuring critical devices are restored quickly.
Solution Approach 2:
The patent applies different registration strategies to different devices based on their criticality. Critical devices receive higher priority and use shorter back-off times, while non-critical devices use longer back-off times. This local differentiation ensures that critical infrastructure is restored first without preventing non-critical devices from eventually re-registering.
2Reliability
If contention techniques such as back-off are used to reduce simultaneous registration attempts, then network congestion is reduced, but crucial devices are delayed from rejoining the network
Solution Approach 1:
The patent differentiates back-off time based on device priority level. Critical devices are assigned shorter back-off times to minimize delay, while non-critical devices are assigned longer back-off times to prevent congestion. This local quality differentiation resolves the contradiction by ensuring critical devices join quickly without causing network instability.
Solution Approach 2:
The patent segments registration into multiple time slots where critical devices register in the first slot with minimal back-off, while non-critical devices register in subsequent slots with increased back-off. This segmentation allows critical devices to rejoin quickly while maintaining network stability during the registration process.
3Loss of time
If priority levels are assigned to devices for ordered registration, then crucial devices re-register quickly, but the system complexity increases
Solution Approach 1:
The patent implements self-service by having devices automatically determine their own priority level based on pre-configured settings or device characteristics. The registration system uses this self-determined priority to assign appropriate back-off times and time slots without requiring manual intervention or complex centralized control, thus reducing system complexity while achieving fast critical device registration.
Solution Approach 2:
The patent changes the registration parameter from uniform simultaneous registration to priority-based ordered registration. By introducing priority levels as a parameter and using it to modulate back-off times and time slot assignments, the system achieves fast critical device registration without requiring complex manual control mechanisms.
Data Source
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AI summary
A method of joining a first device and a second device with a network, the method comprising: joining a first device with the network and subsequently joining a second device with the network, where a priority level for joining with the network associated with the first device is higher than the priority level for joining with the network associated with the second device.