The effect of handover quality on buffering requirements in WATM

TM Whitley, MA Beach

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

340 Downloads (Pure)


In order to maintain quality of service (QoS) guarantees during a wireless ATM handover, the cell stream must be buffered while a new connection is established. Once handoff is complete, the buffers can be emptied and normal transmission resumes. This prevents cell loss but can introduce cell delay variation (CDV) which is detrimental to real time and delay sensitive services. Additional flow control buffers can overcome this; however, the quality of the handoff will greatly affect the loading on these buffers. In this paper a lossless handover method is analysed using the Opnet simulation tool, varying qualities of handoff are modelled and the buffer loading is measured. Practical data gathered using a 5 GHz variable rate modem is included in the model to provide radio performance characteristics and allow cell retransmission rates and other factors that will affect the handover to be incorporated. The results from the Opnet simulation are presented including cell delay and delay variation, utilisation and loading of buffers and handover efficiency.
Translated title of the contributionThe Effect of Handover Quality on Buffering Requirements in WATM
Original languageEnglish
Title of host publicationIEEE Symposium on Communications & Vehicular Technology SCVT-2000, Leuven, Belgium
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages88 - 93
ISBN (Print)0780366840
Publication statusPublished - Oct 2000
EventSymposium on Communications and Vehicular Technology, 2000 - Leuven, Belgium
Duration: 1 Oct 2000 → …


ConferenceSymposium on Communications and Vehicular Technology, 2000
Period1/10/00 → …

Bibliographical note

Rose publication type: Conference contribution

Terms of use: Copyright © 2000 IEEE. Reprinted from Proceedings of IEEE Symposium on Communications and Vehicular Technology, 2000. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to

By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


  • asynchronous transfer mode
  • mobile radio


Dive into the research topics of 'The effect of handover quality on buffering requirements in WATM'. Together they form a unique fingerprint.

Cite this