An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs

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

doi:10.1109/VETECS.2007.281

An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs

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

^*Corresponding author for this work

Department of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages	1340-1344
Number of pages	5
DOIs	https://doi.org/10.1109/VETECS.2007.281
Publication status	Published - 2007
Event	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland Duration: 2007 Apr 22 → 2007 Apr 25

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Country/Territory	Ireland
City	Dublin
Period	2007/04/22 → 2007/04/25

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

Access to Document

10.1109/VETECS.2007.281

Cite this

Huang, JJ, Chen, YH, Chang, SC & Ferng, HW 2007, An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs. in 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring., 4212709, IEEE Vehicular Technology Conference, pp. 1340-1344, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, Dublin, Ireland, 2007/04/22. https://doi.org/10.1109/VETECS.2007.281

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title = "An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs",

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.",

keywords = "Handoff, IEEE 802.11, Scheduling, Voice activity, Voice over internet protocol (VoIP), Wireless local area network (WLAN)",

author = "Huang, {Jeng Ji} and Chen, {Yi Hsuan} and Chang, {Sen Ching} and Ferng, {Huei Wen}",

year = "2007",

doi = "10.1109/VETECS.2007.281",

language = "English",

isbn = "1424402662",

series = "IEEE Vehicular Technology Conference",

pages = "1340--1344",

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AU - Huang, Jeng Ji

AU - Chen, Yi Hsuan

AU - Chang, Sen Ching

AU - Ferng, Huei Wen

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

KW - Handoff

KW - IEEE 802.11

KW - Scheduling

KW - Voice activity

KW - Voice over internet protocol (VoIP)

KW - Wireless local area network (WLAN)

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Y2 - 22 April 2007 through 25 April 2007

ER -

An efficient channel scan scheduling algorithm for VoIP handoffs in WLANs

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Keywords

ASJC Scopus subject areas

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