Device Identifier Assignment via Pending State Confirmation
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Solution Overview
Problem
Existing methods for assigning device identifiers in unreliable wireless environments face challenges such as difficulty in ensuring unique identifiers, resource-intensive management, and premature marking of identifiers as 'in use' due to communication issues and device disconnections.
Innovation Solution
A method where a server centrally assigns a device identifier, marking its status as pending, then confirms its use after acknowledgment from the device, ensuring accurate tracking and reducing resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device identifier is assigned at a central server, then the uniqueness and manageability of device identifiers is improved, but the system resource consumption and complexity increases
Solution Approach 1:
The system performs preliminary actions by pre-generating pools of device identifiers at the server before devices need them. The server maintains ready-to-assign identifiers in various pools (available, pending, in-use), eliminating the need for complex real-time generation and validation when devices connect. This preliminary preparation reduces the complexity of the assignment process while ensuring identifier uniqueness.
2Reliability
If communication protocols include multiple acknowledgment steps, then the reliability of identifier assignment is improved, but the communication time and message overhead increases
Solution Approach 1:
The system implements dynamic acknowledgment protocols where the number and type of messages exchanged adapt based on communication reliability. In reliable environments, fewer acknowledgment steps are used, while in unreliable wireless environments, additional confirmation messages are automatically introduced. This dynamic adjustment maintains high reliability while minimizing unnecessary communication overhead in good conditions.
Solution Approach 2:
The server implements feedback mechanisms where devices confirm receipt of device identifiers, and the server tracks assignment status through structured acknowledgment messages. This feedback loop ensures reliable assignment by verifying that identifiers reached their intended destinations, while the systematic nature of the feedback reduces redundant communications compared to trial-and-error approaches.
3Productivity
If device identifiers are marked as 'in use' immediately after assignment, then the speed of identifier allocation is improved, but the accuracy of usage tracking decreases due to communication failures
Solution Approach 1:
Instead of immediately marking identifiers as 'in use,' the system performs preliminary actions by first placing them in a 'pending' state after assignment. This intermediate step allows the system to verify successful device receipt before finalizing the usage status. The preliminary pending state acts as a buffer that prevents premature marking, ensuring tracking accuracy while maintaining efficient allocation flow.
Solution Approach 2:
The system uses feedback from device acknowledgment messages to transition identifiers from 'pending' to 'in use' status. This feedback-driven state transition ensures that identifiers are only marked as actively used when confirmed receipt is verified. The feedback mechanism maintains precise usage tracking without significantly slowing allocation, as most acknowledgments are received quickly in reliable conditions.
Data Source
AI summary
Method, system, and program product for assigning device identifiers. A device requests a device identifier from a server. The server obtains the device identifier, marks a status of the device identifier as pending, and sends it to the device. The device sends an acknowledgment back to the server. The server then marks the status of the device identifier as in use and sends a confirmation to the device. The device starts to use the device identifier after receiving the confirmation.