An Implementation of Voice over the Cognitive Packet Network

TL;DR

This paper presents the design, implementation, and evaluation of a Voice over IP system using the Cognitive Packet Network, which adaptively routes voice packets to meet strict QoS requirements amidst background traffic.

Contribution

It introduces an extension of the CPN routing algorithm specifically tailored for voice packet delivery with real-time constraints.

Findings

Voice over CPN achieves improved QoS for voice traffic.

The system effectively manages background traffic with different QoS needs.

Adaptive routing enhances real-time packet delivery.

Abstract

Voice over IP (VOIP) has strict Quality of Service (QoS) constraints and requires real-time packet delivery, which poses a major challenge to IP networks. The Cognitive Packet Network (CPN) has been designed as a QoS-driven protocol that addresses user-oriented QoS demands by adaptively routing packets based on online sensing and measurement. This paper presents our design, implementation and evaluation of a "Voice over CPN" system where an extension of the CPN routing algorithm has been developed to support the needs of voice packet delivery in the presence of other background traffic flows with the same or different QoS requirements.