Traffic statistics coordination and accounting session management in multi-link operations
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Solution Overview
Problem
Conventional traffic statistics reporting methods for wireless networking fail to provide a comprehensive and accurate picture of network usage for station multi-link devices (STA MLDs) due to the lack of aggregation across multiple associated access points (APs), leading to resource exhaustion and inaccurate usage statistics.
Innovation Solution
Implementing a mechanism for an accounting server or primary AP MLD to aggregate and coordinate traffic statistics across multiple AP MLDs, using Vendor Specific Attributes (VSAs) to identify and consolidate usage data based on STA MLD identifiers, ensuring precise tracking and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If each AP independently reports usage statistics for the same STA to the RADIUS server, then the reporting process is simple and straightforward, but the usage statistics become incomplete and inaccurate
Solution Approach 1:
The patent merges the independent reporting processes of multiple APs into a unified accounting session. The RADIUS server consolidates statistics from multiple APs by matching them through common identifiers (MAC address, IP address, or session ID), creating a single comprehensive accounting record that accurately reflects total usage across all links.
Solution Approach 2:
The RADIUS server acts as an intermediary that receives statistics from multiple APs, processes them through coordination protocols, and generates unified accounting records. This intermediary role enables accurate aggregation without requiring changes to the basic reporting mechanism at each AP.
2Measurement precision
If multiple accounting sessions are created for STA MLD, then each link can be tracked independently, but the accounting server resources are exhausted
Solution Approach 1:
The patent combines multiple accounting sessions into a single unified session for each STA MLD. The RADIUS server identifies all APs associated with the same STA through common identifiers and consolidates their accounting records, reducing the total number of sessions from multiple to one while preserving link-level tracking capability through structured data organization.
3Device complexity
If conventional reporting methods are used for STA MLD, then the system is simple to implement, but a complete and accurate picture of network usage cannot be provided
Solution Approach 1:
The patent implements a feedback mechanism where the RADIUS server sends accounting responses to APs indicating whether statistics aggregation is supported. This feedback enables APs to adjust their reporting behavior accordingly, ensuring complete information collection while maintaining backward compatibility with simpler systems.
Solution Approach 2:
The patent introduces new parameters and attributes to the existing accounting protocol to enable aggregation functionality. By modifying the accounting request/response structure with new fields for identifying STA MLDs and indicating aggregation capability, the system achieves comprehensive tracking without fundamentally redesigning the entire architecture.
Data Source
AI summary
Techniques for coordinating traffic statistics and managing accounting sessions for multi-link operation are provided. A first communications link with a second network device is established by a first network device. A first accounting request to a third network device is transmitted by the first network device, where the first accounting request indicates that the second network device comprises a station multi-link device (STA MLD). A first accounting response is received by the first network device, indicating whether the third network device supports statistic aggregation. Traffic statistics for the first communication link is collected by the first network device, and reported to the third network device in accordance with the first accounting response.