Optical Bypass for Wide Area Network Resource Optimization

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing network infrastructure incurs unnecessary overhead due to optical-to-electrical-to-optical (OEO) data conversions at intermediate regional server centers for transit data traffic, leading to inefficient use of network resources.

Innovation Solution

The implementation of optical bypasses between two regional server centers, which bypass the electrical domain at intermediate server centers, eliminating the need for OEO conversions and optimizing resource allocation by determining data flow and bandwidth based on network topology, capacity, and traffic demand.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If OEO data conversion is performed at intermediate regional server centers for transit data traffic, then signal regeneration is enabled for further optical fiber transmission, but network resource overhead increases due to unnecessary conversion and router port allocation

Engineering Contradiction:

Improvesignal transmission capabilityVSAvoidnetwork resource overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the OEO conversion function from intermediate regional server centers by establishing direct optical bypass connections. Transit data traffic is routed directly between source and destination server centers via optical fiber, removing the intermediate conversion nodes and their associated router ports and processing resources from the transmission path.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces optical amplifiers as intermediaries to maintain signal integrity over extended optical fiber distances without requiring OEO conversion. These amplifiers operate purely in the optical domain, boosting signal strength while preserving the direct optical transmission path and avoiding the need for intermediate electrical domain conversions.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If direct optical fiber connection is extended without OEO data conversion, then network resource overhead is reduced, but signal amplification requirements increase for long-haul transmission

Engineering Contradiction:

Improvenetwork resource overheadVSAvoidsignal transmission implementation

Core Design Contradiction:

Device complexityVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical/electrical OEO conversion system with a pure optical amplification system. Instead of converting optical signals to electrical signals for processing and re-conversion, the system uses optical amplifiers that directly amplify optical signals in the optical domain, eliminating the need for electrical domain infrastructure at intermediate points.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the operational parameters of the transmission system by operating entirely in the optical domain for transit traffic. This involves adjusting optical signal parameters such as wavelength, power levels, and using optical amplifiers with specific gain characteristics to maintain signal integrity over extended distances without conversion.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution reduces network resource consumption, such as router ports and transponder processing, while maintaining signal integrity through the use of optical amplifiers, thereby enhancing the efficiency and capacity of wide-area network data traffic transmission.

Implementation Method 1

extending the optical fiber connection without the OEO data conversion would require one or more amplifiers to amplify the optical signal in the long-haul optical signal communications

Methodology Applied

Scientific EffectOptical amplification:

Data Source

PatentUS12301288B2Methods for capacity provisioning in wide area networks using optical bypassing

Publication Date: 2025.05.13 MICROSOFT TECHNOLOGY LICENSING LLC

AI summary

Systems and methods are provided for determining an optical bypass for an inter-regional wide area network (WAN) for regions of server facilities of a cloud service provider. In particular, the optical bypass connects non-adjacent regional server centers of the WAN by eliminating needs of data conversions at intermediate regional server centers. The determining the optical bypass includes receiving a WAN topology data, capacity and demand information about the WAN. The determining includes an objective function to maximize a number of network resources to free up by determining a revised data flow and bandwidth allocations by introducing the optical bypass in the WAN. The disclosed technology transmits the determined data traffic flow and resource allocation information of the optical bypass, causing a network traffic enforcers to reconfigure the WAN.