Proposal of dynamic bandwidth allocation technique for low delay/low jitter realtime communication and its evaluation by using CBQ

Shunsuke Nakamura, Kohei Ohta, Nei Kato, Yoshiaki Nemoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Recently, traffic of real-time communication such as video or IP telephony is increasing in Internet. Low delay and low jitter communication is required to perform these kinds of services smoothly. CoS (Class of Services) scheme which controls traffic by the class unit such as application is currently being paid attention. It is considered to be efficient control mechanism which utilizes characteristics of Internet traffic. One of effective methods for queueing control to realize CoS is CBQ (Class Based Queueing). Efficient and dynamic bandwidth allocation can be realized by using CBQ. However, CBQ mechanism is not necessarily efficient for real-time communication. In this paper, We clarify the effect of dynamic CBQ control scheme on real-time communication by experiment. In addition, we show that low delay and low jitter communication is possible by reducing unnecessary control overhead which is caused by traffic change. We propose new mechanism which changes bandwidth allocation of CBQ dynamically suppressing non real-time traffic and giving priority to real-time traffic on using bandwidth. We also show its efficiency by using real system.

Original languageEnglish
Pages (from-to)1513-1520
Number of pages8
JournalIEICE Transactions on Communications
VolumeE84-B
Issue number6
Publication statusPublished - 2001 Jun

Keywords

  • Bandwidth allocation
  • CBQ
  • CoS
  • Internet

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Proposal of dynamic bandwidth allocation technique for low delay/low jitter realtime communication and its evaluation by using CBQ'. Together they form a unique fingerprint.

Cite this