MoCA Bandwidth Calculation via Version Normalization

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Solution Overview

Problem

Managing bandwidth in a network with multiple multimedia devices connected via different MoCA versions is challenging due to varying supported bandwidths, leading to difficulties in implementing an admission and control algorithm to prevent over-subscription of multimedia streams.

Innovation Solution

A home router identifies MoCA nodes, obtains their reported physical rates and supported versions, generates a table of node pairs, determines a normalized physical rate using version-specific ratios, and calculates the maximum bandwidth based on the minimum normalized rate to manage bandwidth effectively across different MoCA versions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If different MoCA versions are deployed in the same network, then device compatibility and versatility are improved, but bandwidth management complexity increases due to varying supported bandwidths

Engineering Contradiction:

Improvedevice compatibilityVSAvoidbandwidth management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system changes the parameter of bandwidth calculation by introducing version-specific normalization ratios. Different MoCA versions (1.1 and 2.0) are assigned different normalization ratios (2.0 and 1.0 respectively), which transforms the physical rates into normalized rates that can be uniformly compared and managed across all versions, thus resolving the bandwidth management complexity while maintaining device compatibility

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The home router acts as an intermediary that performs normalization calculations between different MoCA versions. By calculating normalized physical rates using version-specific ratios and storing them in a lookup table, the router mediates the bandwidth management process, enabling unified admission and control algorithms to function correctly across mixed-version deployments

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If admission and control algorithms are implemented to prevent over-subscription, then service quality and reliability are improved, but network management complexity increases

Engineering Contradiction:

Improveservice qualityVSAvoidnetwork management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary normalization calculations before bandwidth allocation decisions are made. By pre-calculating and storing normalized physical rates in a lookup table during network initialization or node joining, the complexity of real-time bandwidth management is reduced, allowing admission and control algorithms to operate more efficiently with improved service quality guarantees

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8737430B2Determining maximum bandwidth in a mixed version MoCA deployment

Publication Date: 2014.05.27 VERIZON PATENT & LICENSING INC

AI summary

A method, performed by a computer device, may include identifying Multimedia over Coaxial Alliance nodes associated with a customer's network; querying particular pairs of the identified Multimedia over Coaxial Alliance nodes for physical rates to obtain reported physical rates for the particular pairs of the identified Multimedia over Coaxial Alliance nodes; and querying particular ones of the identified Multimedia over Coaxial Alliance nodes for supported Multimedia over Coaxial Alliance versions. The method may further include determining a maximum bandwidth for the customer's network based on the reported physical rates and based on the supported Multimedia over Coaxial Alliance versions.