An implementation of QoS framework for heterogeneous networks

Chang Yang Ho*, Hsi-Lu Chao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Due to the popularity of the IEEE 802.11-based LANs and fast development of the IEEE 802.16e MANs, we can expect a heterogeneous network consisting of 802.11-based and 802.16e networks in the near future. In such an environment, heterogeneous handoff is possible. How to keep guaranteeing the handoff connection its QoS demand, and in the meantime, avoid impacting on other connections is a challenge to support real-time applications in a heterogeneous network. In this paper, we develop a heterogeneous network in NS-2 simulator. In addition, we implement application mapping function, call admission control, and scheduling in this heterogeneous network to observe the QoS performance of a handoff connection. The simulation results show that our implemented modules support handoff connections' QoS demands in respect of throughput, and delay. In addition, the implemented call admission control algorithm reduces the blocking rate efficiently.

Original languageEnglish
Title of host publicationEmerging Direction in Embedded and Ubiquitous Computing - EUC 2007 Workshops
Subtitle of host publicationTRUST, WSOC NCUS, UUWSN, USN, ESO, and SECUBIQ, Proceedings
Number of pages11
StatePublished - 1 Dec 2007
Event2007 IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2007 Workshops - Taipei, Taiwan
Duration: 17 Dec 200720 Dec 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4809 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference2007 IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2007 Workshops


  • Call admission control
  • Heterogeneous handoff
  • Heterogeneous network
  • Scheduling

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