Intelligent Subscriber Subsystem for Longer-Reach Optical Access

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Solution Overview

Problem

The increasing demand for bandwidth and the rising total deployment costs of advanced optical access communication systems, while experiencing a decreasing return on investment, pose a significant business dilemma.

Innovation Solution

A dynamic bidirectional optical access communication system utilizing phase and intensity modulators at the intelligent subscriber subsystem to reduce the Rayleigh backscattering effect, enabling a longer-reach optical access network and eliminating the need for middle equipment like routers and switches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If advanced optical access communication systems are deployed to meet increasing bandwidth demand, then communication capability is improved, but total deployment cost increases

Engineering Contradiction:

Improvebandwidth demandVSAvoidtotal deployment cost

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates middle equipment (routers, switches, OLTs) from the optical access network architecture. By implementing intelligent subscriber subsystems with local processing capabilities directly at the customer premises, the system removes the need for complex centralized equipment, thereby reducing deployment costs while maintaining bandwidth capability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The intelligent subscriber subsystem performs local signal processing, wavelength conversion, and data handling without requiring centralized control equipment. This self-service capability at the subscriber end eliminates the need for expensive middle equipment and reduces overall system deployment cost while meeting bandwidth demands.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If middle equipment like routers and switches are used in optical access networks, then network functionality is improved, but device complexity and cost increase

Engineering Contradiction:

Improvenetwork functionalityVSAvoidmiddle equipment

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the functions of middle equipment (routing, switching, wavelength conversion, signal processing) into the intelligent subscriber subsystem at the customer premises. This consolidation eliminates separate middle equipment while maintaining all necessary network functionalities through integrated local processing.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent shifts network functionality from the centralized dimension (middle equipment at operator facilities) to the distributed dimension (intelligent subscriber subsystems at customer premises). This dimensional change eliminates the need for intermediate equipment while preserving network adaptability and versatility.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of manufacture

If conventional optical access networks are deployed, then initial deployment is simpler, but return on investment decreases due to rising costs

Engineering Contradiction:

Improvedeployment simplicityVSAvoidreturn on investment

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The intelligent subscriber subsystem provides self-service capabilities including automatic wavelength conversion, signal processing, and network management functions. This eliminates the need for expensive middle equipment and ongoing operational costs, thereby improving return on investment while maintaining deployment simplicity.

Inventive Principle:

Principle #25Self-service

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

The solution enables a longer-reach optical access communication network, reducing costs associated with middle equipment and providing dynamic wavelength, bandwidth, and service on-demand, thereby enhancing return on investment.

Implementation Method 1

a phase modulator and an intensity modulator at an intelligent subscriber subsystem. Together, these two critical optical modules can reduce the Rayleigh backscattering effect on the propagation of optical signals

Methodology Applied

Scientific EffectPhase modulation: Phase Modulation

Implementation Method 2

Methodology Applied

Scientific EffectIntensity modulation: Phase Modulation

Implementation Method 3

these two critical optical modules can reduce the Rayleigh backscattering effect on the propagation of optical signals

Methodology Applied

Scientific EffectRayleigh backscattering: Rayleigh Scattering

Data Source

PatentUS12333412B1Intelligent (self-learning) subsystem in access networks

Publication Date: 2025.06.17 MAZED MOHAMMAD A

AI summary

An intelligent (self-learning) sensor-aware and/or context-aware subsystem comprising (i) a System-on-a-Chip (SoC), (ii) a radio transceiver, (iii) a microphone, (iv) a voice processing module, (v) a (bio-inspired) neuromorphic event camera or a hyperspectral camera, (vi) a first set of computer implemental instructions in artificial neural networks (ANN) (which may include a transformer model/diffusion model or Poisson flow generative model++ (PFGM++)), (vii) a second set of computer implementable instructions to analyze and interpret contextual data and (viii) an autonomous artificial intelligence (AI) agent is disclosed.