Jitter Upper Bound Guarantee via Destination Buffer Holding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods fail to guarantee a jitter upper bound, including zero jitter, in large-scale or dynamic networks without time-synchronization, which is essential for deterministic network services with stringent latency and jitter requirements.
Innovation Solution
A method that buffers packets for a predetermined interval based on the network's latency upper bound, ensuring inter-arrival intervals match inter-departure intervals, without requiring time-synchronization or slot allocation between nodes, using a buffer located between the network and the destination, and relative time-stamps to manage packet transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time-synchronization and slot allocation are implemented between nodes to guarantee jitter upper bound, then jitter control precision is improved, but device complexity and network overhead increase significantly
Solution Approach 1:
The patent extracts the time-synchronization and slot allocation functions from the network nodes, concentrating these complex functions into a single buffer device at the destination. This removes the need for synchronized clocks and slot coordination between multiple nodes, thereby reducing network complexity while maintaining jitter control precision through buffer-based packet holding and sequential output.
Solution Approach 2:
The buffer acts as an intermediary between the network and the destination, absorbing timing variations and jitter without requiring time-synchronization between network nodes. The buffer holds packets for predetermined intervals and outputs them sequentially, mediating the timing differences and guaranteeing jitter upper bound without complex node coordination.
2Reliability
If TSN synchronous approach with central network controller is deployed, then deterministic packet service is improved, but scalability of the network deteriorates
Solution Approach 1:
The patent extracts the central control function from the network architecture, eliminating the need for a central network controller that performs slot scheduling and coordination. The buffer at the destination independently manages packet timing without requiring runtime reconfiguration or controller intervention, enabling the network to scale dynamically as nodes join or leave without impacting deterministic service guarantees.
3Loss of time
If slot scheduling and coordination is performed by central control device, then latency guarantee is improved, but network overhead increases
Solution Approach 1:
The buffer performs self-service by autonomously holding packets for predetermined intervals and outputting them sequentially without requiring slot scheduling or coordination from a central controller. This eliminates the overhead associated with controller computations, slot allocation messages, and runtime reconfigurations, while still achieving precise latency and jitter control through the buffer's inherent timing mechanism.
Data Source
AI summary
In a method of guaranteeing a jitter upper bound for a network without time-synchronization, which guarantees a jitter upper bound for a flow that is transmitted from a source to a destination through a network, the network guarantees a latency upper bound of the flow, a buffer located between the network and the destination holds a packet of the flow for a predetermined buffer holding interval and then outputs, and the jitter upper bound is set to an arbitrary value including 0 (zero).