Low-Jitter Communication Connections with Predictive Bitrate Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Distributed real-time applications experience increased jitter due to discontinuous drops in available bitrate, leading to improper operation, as the sender is often too late to adjust the data rate accordingly.
Innovation Solution
A communication network node anticipates discontinuous drops in available bitrate and signals the difference to the distributed real-time application, which immediately reduces the data rate, thereby preventing jitter by ensuring the data rate does not exceed the available bitrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sender exploits the currently available bitrate to maximize data transmission, then productivity is improved, but jitter increases when the bitrate drops discontinuously
Solution Approach 1:
The communication network node performs preliminary action by anticipating the discontinuous drop in available bitrate before it actually occurs. The node signals the upcoming bitrate reduction to the sender in advance, allowing the sender to proactively adjust the data rate before the drop happens, thereby preventing queue buildup and jitter while maintaining high productivity during normal operation
2Reliability
If the sender adjusts the data rate reactively after bitrate drop, then reliability is improved by preventing queue overflow, but loss of time occurs due to round trip delays
Solution Approach 1:
Instead of reactive adjustment, the system performs preliminary action by anticipating the bitrate drop. The network node detects signs of upcoming bitrate reduction and signals the sender beforehand, eliminating the need for reactive response and the associated round trip time delays. This proactive approach maintains reliability while avoiding time loss.
3Reliability
If the network node monitors and anticipates bitrate changes, then jitter is reduced, but device complexity increases
Solution Approach 1:
The network node implements a feedback mechanism where it continuously monitors network conditions, anticipates bitrate drops based on observed patterns or metrics, and signals this information back to the sender. This feedback loop enables proactive jitter control without requiring overly complex node functionality, as the node only needs to detect and communicate upcoming changes rather than fully control the transmission
Data Source
AI summary
A method for operating a communication network provides a sender of a distributed real-time application and a receiver of the distributed real-time application with a communication connection. The sender periodically transmits data packets to the receiver via the provided communication connection at a data rate exploiting a currently available bitrate of the communication connection. A node of the communication network anticipates the currently available bitrate to discontinuously drop and signals a difference of a dropped bitrate from the currently available bitrate to the distributed real-time application. The distributed real-time application immediately reduces the data rate according to the signalled difference.