Intercluster Call Admission Control Bandwidth Deduction Prevention
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Solution Overview
Problem
Inconsistent network management and bandwidth allocation lead to disruptions and poor call quality, especially during congestion, as existing protocols like RSVP struggle to accurately manage data sessions and prevent duplicate bandwidth deductions in shared network environments.
Innovation Solution
Implementing a method within an intercluster Call Admission Control (CAC) arrangement that uses Unified Communications Manager (UCM) and Location Bandwidth Manager (LBM) to model complex networks, track bandwidth across clusters, and prevent duplicate bandwidth deductions by employing fate-share IDs and session identifiers, ensuring efficient bandwidth allocation and maintaining call quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RSVP is used to reserve bandwidth along data paths, then resource reservation capability is improved, but duplicate bandwidth deductions and inconsistent network management occur in shared network environments
Solution Approach 1:
The patent segments the bandwidth management function by introducing separate Location Bandwidth Managers (LBMs) at each network location, which independently track and account for bandwidth deductions. This segmentation prevents duplicate deductions by ensuring each LBM maintains its own local account of reserved bandwidth, resolving the inconsistency problem in shared network environments while maintaining reliable RSVP-based reservations.
2Productivity
If bandwidth is shared across multiple clusters and call agents, then network resource utilization is improved, but duplicate bandwidth deductions occur leading to call disruptions
Solution Approach 1:
The patent implements a feedback mechanism where Location Bandwidth Managers continuously monitor and report bandwidth reservation status back to the network. When a bandwidth deduction occurs at any location, the LBM provides feedback to prevent duplicate deductions at other locations, ensuring call session stability while maintaining efficient shared bandwidth utilization across clusters.
3Power
If routers handle increased bandwidth demands during congestion, then network capacity is improved, but packets are indiscriminately discarded compromising call quality
Solution Approach 1:
The patent applies preliminary action by reserving bandwidth before congestion occurs through RSVP signaling. Location Bandwidth Managers pre-account for bandwidth deductions and establish reserved bandwidth buckets in advance, ensuring that when congestion occurs, packets with reserved bandwidth are protected from indiscriminate discarding, maintaining call quality during high-demand periods.
Data Source
AI summary
In one embodiment, a method includes obtaining a potential bandwidth deduction at a call agent, the call agent being associated with an intercluster call admission control (CAC) arrangement in which bandwidth is shared, the potential bandwidth deduction being associated with a session. The method also includes determining whether the potential bandwidth deduction is a duplicate bandwidth deduction, deducting the potential bandwidth deduction from a bandwidth bucket when it is determined that the potential bandwidth deduction is not the duplicate bandwidth deduction, and ignoring the potential bandwidth deduction when it is determined that the potential bandwidth deduction is the duplicate bandwidth deduction.