An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs

Jeng-Ji Huang, Yi Hsuan Chen, Sen Ching Chang, Huei Wen Ferng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

To guarantee seamless handoffs between access points (APs) is one of the most decisive factors in providing realtime applications such as voice over internet protocol (VoIP) in IEEE 802.11 networks. It is because in wireless local area networks (WLANs) there is no specific control channel for executing a handoff process and a mobile station (MS) has to search for new APs from channel to channel by temporarily disconnecting its association with the old AP. While previous studies are mainly focused on how to reduce the handoff latency, in this paper a channel scanning algorithm is proposed to schedule suitable time for performing a handoff process efficiently. In the proposed algorithm, the voice activity is taken into consideration, and the handoff process is performed during silent periods. Extensive simulations are conducted to investigate the performance of the proposed algorithm in terms of the handoff success probability and the packet loss rate, and the results obtained in this paper can serve as a good reference for the system design.

Original languageEnglish
Title of host publication2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages1340-1344
Number of pages5
DOIs
Publication statusPublished - 2007 Aug 2
Event2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland
Duration: 2007 Apr 222007 Apr 25

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
CountryIreland
CityDublin
Period07/4/2207/4/25

    Fingerprint

Keywords

  • Handoff
  • IEEE 802.11
  • Scheduling
  • Voice activity
  • Voice over internet protocol (VoIP)
  • Wireless local area network (WLAN)

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Huang, J-J., Chen, Y. H., Chang, S. C., & Ferng, H. W. (2007). An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs. In 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring (pp. 1340-1344). [4212709] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2007.281