Auxiliary NAS Dynamic Session Policy Provisioning
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Solution Overview
Problem
Auxiliary NAS devices in communications networks face challenges in dynamically managing subscriber sessions due to lack of automatic access to relevant session information, especially when serving multiple primary NASs and paired with multiple peer auxiliary NASs, making it difficult to enforce policies and manage traffic effectively.
Innovation Solution
A method and system where auxiliary NAS devices identify new traffic flows, generate request messages with IP addresses and peer device identifiers, and transmit these to a policy server to obtain necessary policy and session information, allowing for dynamic distribution and updates of policies without manual configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If auxiliary NAS devices manually configure session information, then device complexity is reduced, but adaptability and ease of operation deteriorate due to inability to dynamically manage sessions across multiple primary NASs and peer auxiliary NASs
Solution Approach 1:
The auxiliary NAS device automatically generates request messages containing its identifier and peer device identifier, and processes received policy messages without manual configuration. This self-service mechanism enables dynamic session information provisioning while maintaining operational simplicity.
Solution Approach 2:
The system establishes a feedback loop where the auxiliary NAS sends request messages to receive session information, and the received messages are processed to update session state. This automated feedback mechanism enables dynamic adaptation to changing network conditions across multiple primary NASs and peer auxiliary NASs.
2Adaptability or versatility
If auxiliary NAS devices dynamically obtain session information through automated mechanisms, then adaptability and ease of operation improve, but device complexity increases due to additional message generation and processing requirements
Solution Approach 1:
The request message and policy message act as intermediaries between the auxiliary NAS and the network, carrying session information and control instructions. This standardized messaging approach enables dynamic session management while abstracting the complexity of multi-NAS coordination.
Solution Approach 2:
The message handling mechanisms are designed to be universal, processing both request messages (outbound) and policy messages (inbound) through standardized procedures. This multi-functionality enables the auxiliary NAS to adapt to various session management scenarios across different primary NASs and peer auxiliary NASs without requiring device-specific complexity.
Data Source
AI summary
Various exemplary embodiments relate to a method and related network node including: receiving, at the network device, a traffic message including an IP address; identifying the traffic message as belonging to a new session; generating a request message based on identifying the traffic message as belonging to a new session, wherein the request message includes the IP address; transmitting the request message to a policy server; and receiving, from the policy server, a policy message including a policy. Various exemplary embodiments relate to a method and related network node including: receiving, at the policy server, a request message from a network device, the request message including a subscriber IP and a network device identifier; identifying a subscriber session associated with the IP address; recording the network device identifier in association with the subscriber session; retrieving a policy associated with the subscriber session; and transmitting the policy to the network device.