AAA Server Session Recovery During Reset
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Solution Overview
Problem
Current 3GPP AAA server specifications lack a mechanism for initiating reset procedures when the server loses session information or becomes out of sync with peers, leading to potential service disruptions.
Innovation Solution
The implementation of a mechanism where the AAA server determines the need for a reset while connected to peers, sends a notification, and automatically receives stored session information upon reconnection, enabling automatic session recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AAA server implements automatic reset and recovery mechanisms, then service continuity and session integrity are improved, but device complexity increases
Solution Approach 1:
The AAA server performs preliminary actions by determining the need for a reset before actually resetting, and by having peers store session information in advance. The server sends re-authorization requests with reset indications to peers before the actual reset occurs, ensuring that when the server reconnects, the session information is already prepared and can be immediately recovered without service disruption.
Solution Approach 2:
The system implements feedback mechanisms where the AAA server receives re-authorization responses from peers containing session information after sending reset notifications. This feedback loop allows the server to automatically recover session information and maintain service continuity. The server monitors peer responses and uses this feedback to reconstruct session data without manual intervention.
2Reliability
If the AAA server sends notifications to peers before reset, then session recovery capability is improved, but loss of time increases
Solution Approach 1:
The AAA server sends re-authorization requests with reset indications to peers in advance of the actual reset operation. This preliminary notification allows peers to prepare and store session information before the reset occurs. When the server reconnects after the reset, the session information is already ready, eliminating the need for time-consuming post-reset information retrieval and enabling immediate session recovery.
3Ease of operation
If the AAA server automatically receives session information upon reconnection, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The AAA server performs self-service by automatically determining when a reset is needed, sending notifications to peers, and recovering session information without external intervention. The server monitors its own operational state, initiates reset procedures autonomously, and automatically receives and processes session information from peers upon reconnection, eliminating the need for manual operational involvement.
Solution Approach 2:
The automatic recovery mechanism relies on feedback loops where the server sends re-authorization requests to peers and receives responses containing session information. This automated feedback process enables the server to autonomously recover sessions without manual configuration or intervention, simplifying operation while the underlying complexity is encapsulated within the automated protocol.
Data Source
AI summary
Systems and methods for server reset procedures are disclosed. Some implementations include determining, at a server, that the server is to be reset while currently being in connection to one or more peers, wherein the one or more peers store session information associated with the connection to the server, upon the determination and post reset, sending a notification from the server to the one or more peers connected to the server, and when the server reconnects with the one or more peers after the reset, automatically receiving the stored session information from the one or more peers.