A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application

Sung Rae Kim, Kyung Joon Kim, Jae Jong Baek, Joo Seok Song

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

2 Citations (Scopus)

Abstract

Recently, many researchers have investigated the Voice over IP (VoIP) service over Wireless Local Area Networks (WLANs). One ofthe important challenges is to reduce the handoff delay in WLANs. Especially, the channel scan delay, which takes the largest portion of the WLAN handoff delay, is too long to support the delay-sensitive VoIP service. We propose a selective channel scan based on the pre-collected channel information of the neighboring access points (APs) to reduce the channel scan time. Mobile Stations (MSs) collect the channel information of neighboring Access Points (APs) when the VoIP is not used. When the VoIP service is used, MSs perform the selective channel scan mechanism based on the collected channel information. We use the handoff trigger based on the Inter-Arrival Time (IAT) of VoIP packets instead of Received Signal Strength Indication (RSSI). We evaluated the performance of the proposed scheme through computer simulations. The simulation results show that our scheme reduces the handoff delay enough to support the VoIP service over WLANs.

Original languageEnglish
Title of host publication2009 International Conference on Innovations in Information Technology, IIT '09
Pages70-74
Number of pages5
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 International Conference on Innovations in Information Technology, IIT '09 - Al-Ain, United Arab Emirates
Duration: 2009 Dec 152009 Dec 17

Publication series

Name2009 International Conference on Innovations in Information Technology, IIT '09

Other

Other2009 International Conference on Innovations in Information Technology, IIT '09
CountryUnited Arab Emirates
CityAl-Ain
Period09/12/1509/12/17

Fingerprint

Wireless local area networks (WLAN)
Computer simulation

All Science Journal Classification (ASJC) codes

  • Information Systems

Cite this

Kim, S. R., Kim, K. J., Baek, J. J., & Song, J. S. (2009). A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application. In 2009 International Conference on Innovations in Information Technology, IIT '09 (pp. 70-74). [5413770] (2009 International Conference on Innovations in Information Technology, IIT '09). https://doi.org/10.1109/IIT.2009.5413770
Kim, Sung Rae ; Kim, Kyung Joon ; Baek, Jae Jong ; Song, Joo Seok. / A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application. 2009 International Conference on Innovations in Information Technology, IIT '09. 2009. pp. 70-74 (2009 International Conference on Innovations in Information Technology, IIT '09).
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Kim, SR, Kim, KJ, Baek, JJ & Song, JS 2009, A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application. in 2009 International Conference on Innovations in Information Technology, IIT '09., 5413770, 2009 International Conference on Innovations in Information Technology, IIT '09, pp. 70-74, 2009 International Conference on Innovations in Information Technology, IIT '09, Al-Ain, United Arab Emirates, 09/12/15. https://doi.org/10.1109/IIT.2009.5413770

A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application. / Kim, Sung Rae; Kim, Kyung Joon; Baek, Jae Jong; Song, Joo Seok.

2009 International Conference on Innovations in Information Technology, IIT '09. 2009. p. 70-74 5413770 (2009 International Conference on Innovations in Information Technology, IIT '09).

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

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Kim SR, Kim KJ, Baek JJ, Song JS. A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application. In 2009 International Conference on Innovations in Information Technology, IIT '09. 2009. p. 70-74. 5413770. (2009 International Conference on Innovations in Information Technology, IIT '09). https://doi.org/10.1109/IIT.2009.5413770