Decomposed Network Layer Virtualization for Scalable Access

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Solution Overview

Problem

Conventional broadband access networks face challenges in scalability and maintenance due to the aggregation of multiple network communication layers on a single device, leading to high costs and inefficiencies, particularly when a failure occurs at one layer, requiring replacement of the entire device despite other layers functioning properly.

Innovation Solution

Decomposing aggregate network communication layer functionality allows respective functionalities to be implemented on different devices, with L1, L2, and L3 layers distributed across various devices, enabling easier scaling and reducing maintenance costs by allowing individual layer replacements without affecting other operational layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If multiple network communication layers are aggregated on a single device, then device functionality is consolidated, but device replacement cost and maintenance complexity increase when a layer fails

Engineering Contradiction:
Improvedevice functionality consolidationVSAvoiddevice replacement cost
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The patent divides the network communication functionality into separate layers (physical layer, data link layer, network layer) and implements each layer on different devices. This segmentation allows individual layer replacement without affecting other layers, reducing replacement costs and maintenance complexity while maintaining consolidated functionality through the distributed architecture.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If multiple network communication layers are aggregated on a single device, then functionality is integrated, but scalability is reduced due to device replacement requirements

Engineering Contradiction:
Improvefunctionality integrationVSAvoidscalability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

By segmenting network functionality into separate layers implemented on different devices, the system achieves scalability. Each layer can be independently added, modified, or replaced without requiring replacement of the entire device, allowing the network to adapt and scale more effectively while maintaining integrated functionality through the distributed layer architecture.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If aggregate network communication layer functionality is used, then device functionality is combined, but maintenance efficiency decreases when layer failure occurs

Engineering Contradiction:
Improvefunctionality combinationVSAvoidmaintenance efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent implements segmentation of network communication layers across different devices, enabling maintenance efficiency. When a failure occurs at one layer, only that specific layer needs to be addressed and replaced, rather than the entire device. This segmented approach maintains functionality combination while significantly improving maintenance efficiency and reducing downtime.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9979564B2Virtual customer networks and decomposition and virtualization of network communication layer functionality
Publication Date: 2018.05.22 COX COMMUNICATIONS INC
  • US9979564B2 patent drawing
  • US9979564B2 patent drawing
  • US9979564B2 patent drawing

AI summary

Aggregate functionality associated with multiple network communication layers may be decomposed and respective functionality associated with different network communication layers may be implemented on different devices. One or more aspects of respective functionality associated with a particular network communication layer may be virtualized based on the decomposition of the aggregate functionality. Virtual customer networks may be established for providing network-based services to a subscriber of an access network.