Network Switch Queueing with Dynamic Bandwidth Asymmetry
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Solution Overview
Problem
Current communication networks face inefficiencies in data transmission due to differences in data capacity between nodes, leading to suboptimal bandwidth allocation and increased costs in maintaining high-capacity transceivers across the network.
Innovation Solution
Implementing a system where primary nodes transmit data to secondary nodes using higher-capacity transceivers for downstream data and lower-capacity transceivers for upstream data, allowing for pooled bandwidth allocation in one direction and dedicated allocations in the other, while using optical subcarriers to manage and route data efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-capacity transceivers are deployed across the entire network to maximize data transmission capability, then network throughput and data capacity are improved, but device cost and infrastructure complexity increase significantly
Solution Approach 1:
The patent applies local quality by assigning different transceiver capacities to different network nodes based on their specific requirements. Primary nodes (network switches) are equipped with high-capacity transceivers for downstream transmission, while secondary nodes (server computers) use lower-capacity transceivers for upstream transmission. This non-uniform configuration optimizes overall network performance while reducing costs, as each node's transceiver capacity matches its actual data transmission needs rather than requiring all nodes to use the highest-capacity transceivers.
2Productivity
If pooled bandwidth allocation is implemented for downstream data transmission from primary nodes, then network resource utilization efficiency is improved, but bandwidth allocation control complexity increases
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the primary node (network switch) dynamically assigns different bandwidth portions to multiple secondary nodes based on real-time network conditions and requirements. The pooled bandwidth is dynamically adjusted and distributed to serve multiple server computers, allowing the system to adapt to changing traffic patterns and optimize resource utilization efficiency while maintaining centralized control at the primary node.
3Reliability
If dedicated transceiver capacity is assigned to each node for upstream data transmission, then data transmission reliability is improved, but network cost and device complexity increase
Solution Approach 1:
The patent applies asymmetry by creating different transceiver capacity requirements for upstream and downstream directions. Secondary nodes (server computers) are assigned dedicated lower-capacity transceivers for upstream transmission to ensure reliable data transmission from servers to the network switch. This dedicated assignment provides transmission reliability for upstream traffic while the asymmetric configuration (different capacities for different directions) reduces overall network costs compared to requiring all nodes to have high-capacity transceivers in both directions.
Data Source
AI summary
An example system includes a first network node, a second network node, and a third network node. The first network node is configured to generate a first optical subcarrier representing first data, and transmit the first optical subcarrier to the second network node. The second network node is configured to receive the first optical subcarrier from the first network node, generate a second optical subcarrier representing the first data, where the second optical subcarrier is different from the first optical subcarrier, and transmit the second optical subcarrier to the third network node.