Performance of an Admission Control Scheme for Bandwidth in Multimedia Handover Services in UMTS mobile Cellular Network

Authors

  • Edwin Omosa
  • Kibet Langat
  • Stephen Musyoki

Keywords:

Admission control, bandwidth broker, DiffServ, QoS

Abstract

The ever growing multimedia services in the telecommunication industry have congested the mobile cellular networks in proportions never witnessed before. This worrisome trend has resulted in degraded services especially during handover in networks as bandwidth is limited. To avoid starving critical services after handover, bandwidth has to be shared fairly. Specifically, users requiring more bandwidth for transmission should not be limited by bandwidth, conversely, those requiring less bandwidth should not be over allocated. A worthwhile strategy to these challenges would be a properly designed admission control that meets Quality of Service (QoS) requirements. An admission control ensures that the acceptance of a new traffic into a network cell does not deny services to already established traffic and that the network cell can satisfy its different QoS requirements. The paper presents the design, implementation and performance of an admission control algorithm based on bandwidth broker that provides QoS of multimedia traffic in a cellular network during handover. The algorithm manages multimedia traffic through Differentiated Service (DiffServ) policies. Instead of having admission mechanisms in all core routers
processing traffic requests as in Integrated Service (IntServ), a centralized Bandwidth Broker (BB) is preferred. The bandwidth is partitioned between different multimedia traffic.

Author Biographies

Edwin Omosa

Department of Telecommunication Engineering

Kibet Langat

Department of Telecommunication Engineering, Jomo Kenyatta University of Agriculture and Technology (JKUAT)

Stephen Musyoki

Technical University of Kenya (TUK), Department of Electrical and Electronics Engineering

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Published

04-04-2022