Abstract

In recent years, Voice over IP (VoIP) has impacted global telecommunications and networking tremendously. Traffic engineering and Quality of Service (QoS) guarantees for VoIP services pose a challenge for network researchers and designers. The repeated use of Internet Protocol shortest path towards the same destination may lead to unbalanced traffic situations and degraded network performance. Therefore, load balancing and link utilization become the critical functions in Internet Protocol routing for providing Quality of Service assurance for VoIP application. The aim of this work is to employ Multiprotocol Label Switching Network as a traffic engineering tool to enhance the QoS for VoIP applications. To achieve this, an effective Multiprotocol Label Switching Network load balancing architecture is developed that classifies the Internet traffic flows, routes the flows into multiple paths. Flow arrival rate, packet loss rate and delay are measured and taken as the input parameters and compared with the threshold values to identify the VoIP flow. Network load status is calculated by estimating the average buffer occupancy value and multipath routing is triggered when the network load is high to enhance the QoS. The investigated performance measures like throughput, delay and packet loss are reported to show the efficiency of the proposed technique for effective VoIP flows.

Highlights

  • Voice over IP (VoIP) services can be obtained on any network such as the Internet, intranets and local networks with Internet Protocol (IP) routing protocol in which the digitized voice packets are forwarded to the destination [1]

  • Quality of Service for VoIP flows are improved by routing the VoIP flow through multiple paths which satisfy the given input constraints

  • The VoIP flow whose arrival rate and packet loss rate are higher than the specific threshold value is classified as unresponsive and low priority is set up for those packets

Read more

Summary

Introduction

VoIP services can be obtained on any network such as the Internet, intranets and local networks with Internet Protocol (IP) routing protocol in which the digitized voice packets are forwarded to the destination [1]. The Internet applications need specific service requirements for different applications and the network must be able to provide the required QoS guarantees. MPLS features a simple and effective packet forwarding mechanism that overlays virtual path capability of a connection oriented network over connection-less IP networks to carry voice, data and video traffic with different service level performances. VoIP traffic and its characteristics should be identified in order to compute label switched paths that satisfy multiple traffic constraints to guarantee the required QoS [4]

Objectives
Results
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call