VoIP Codec Selection via Link Characteristic Detection

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Solution Overview

Problem

Existing VoIP communication systems face disruptions and resource wastage due to inadequate codec selection based on Internet link bandwidth, usage, and type, leading to suboptimal communication quality and inefficient resource utilization.

Innovation Solution

A VoIP device or edge device with a link monitor and interface that detects Internet link characteristics to select an appropriate codec based on bandwidth, usage, and type, considering business policies such as cost and criticality, and can switch between codecs and links to maintain optimal communication quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a high bandwidth codec is used, then communication quality is improved, but resource utilization deteriorates when the Internet link has low bandwidth

Engineering Contradiction:

Improvecommunication qualityVSAvoidresource utilization

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system dynamically selects codecs based on real-time detection of Internet link characteristics (bandwidth, usage, type). The codec selection is not fixed but adapts to changing network conditions, allowing the system to optimize between communication quality and resource utilization by switching between high and low bandwidth codecs as needed

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the codec parameter (bandwidth characteristic) based on the detected Internet link parameters. When the link has high bandwidth, a high bandwidth codec is selected to maximize quality; when the link has low bandwidth, a low bandwidth codec is selected to improve resource utilization efficiency

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If a codec is selected without considering Internet link characteristics, then device complexity is reduced, but communication quality deteriorates

Engineering Contradiction:

Improvecodec selection mechanismVSAvoidcommunication quality

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system performs self-detection of Internet link characteristics (bandwidth, usage, type) and autonomously selects the appropriate codec without external intervention. The link monitor and interface components enable the system to self-assess network conditions and make independent codec selection decisions, balancing complexity with improved communication quality

Inventive Principle:

Principle #25Self-service

3Device complexity

If the same codec is used for all Internet links, then device complexity is reduced, but resource utilization deteriorates

Engineering Contradiction:

Improvecodec managementVSAvoidresource utilization

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

The system applies different codec characteristics to different Internet links based on their specific properties (bandwidth, usage, type). Each link receives the codec that is most appropriate for its local characteristics, rather than applying a uniform codec to all links, thereby optimizing resource utilization for each specific link condition

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11770419B2Devices and systems for voice over internet protocol codec selection

Publication Date: 2023.09.26 EDGEWATER NETWORKS INC

AI summary

Devices and systems for voice over Internet protocol (VoIP) codec selection are described herein. One or more embodiments include a VoIP device for selecting a codec comprising a link monitor to detect an Internet link and an interface coupled to the link monitor, wherein the interface determines a bandwidth, usage, and/or type of the Internet link to select the codec.