Bandwidth Message Triggering in Telecommunication Networks
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Solution Overview
Problem
Telecommunications networks face inefficiencies in bandwidth allocation due to frequent transmission of available bandwidth messages, leading to increased network congestion and resource waste, particularly during large-scale circuit setup events like network restoration, as existing protocols send messages too frequently or with unnecessary frequency adjustments.
Innovation Solution
Implementing a strategy to send available bandwidth messages only when the bandwidth change allows or prevents the accommodation of the next or previous discrete circuit bandwidth levels, reducing message frequency and CPU load, and limiting messages to once per second per link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If available bandwidth messages are sent frequently to ensure accurate bandwidth information, then the accuracy of bandwidth availability information is improved, but network congestion and resource waste increase
Solution Approach 1:
The patent changes the parameter of message transmission frequency by introducing a threshold-based mechanism. Instead of sending messages at fixed intervals or on every bandwidth change, messages are sent only when bandwidth changes exceed a predetermined threshold, thus reducing unnecessary transmissions while maintaining adequate information accuracy for circuit setup decisions
Solution Approach 2:
The patent applies partial action by sending bandwidth messages selectively rather than continuously. The system sends messages only when necessary (when bandwidth changes cross thresholds) rather than maintaining constant communication, reducing network traffic while providing sufficient information for most circuit provisioning scenarios
2Reliability
If available bandwidth messages are sent frequently to prevent insufficient bandwidth allocation, then circuit setup reliability is improved, but network congestion increases
Solution Approach 1:
The patent modifies the transmission parameter from fixed-frequency or event-driven to threshold-driven transmission. By changing when messages are sent based on bandwidth change magnitude rather than time or any change, the system reduces message volume while maintaining reliability for significant bandwidth changes that would affect circuit setup decisions
Solution Approach 2:
The patent introduces dynamic adaptation by adjusting message transmission based on actual bandwidth change conditions. The system dynamically determines whether to send messages based on whether changes exceed thresholds, rather than following a static transmission schedule, allowing the network to adapt traffic volume to actual conditions
3Loss of time
If available bandwidth messages are sent on every bandwidth change to ensure up-to-date information, then information timeliness is improved, but CPU load and message formulation resources increase
Solution Approach 1:
The patent changes the triggering parameter for message transmission from any bandwidth change to bandwidth change exceeding a threshold. This reduces the frequency of message formulation and transmission events, thereby reducing CPU load and resource consumption while maintaining timeliness for significant changes that would impact circuit provisioning
Solution Approach 2:
The patent applies partial action by processing and transmitting only the most significant bandwidth changes. Instead of responding to every minor bandwidth fluctuation, the system selectively processes only those changes that exceed predetermined thresholds, reducing computational overhead while maintaining adequate information timeliness for meaningful changes
Data Source
AI summary
Switches within a telecommunications network exchange so-called available bandwidth messages, each of which advertises how much bandwidth remains unassigned on a respective link. The network is of a type in which circuits are provisioned with various predefined numbers of time slots (equivalent to bandwidth). The sending of an available bandwidth message for a given link is triggered by a change in the number of time slots available on that link if that change results in a change in the number of circuit bandwidths that can be accommodated by that link for a newly provisioned circuit.