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 language | English |
|---|---|
| Title of host publication | 2009 International Conference on Innovations in Information Technology, IIT '09 |
| Pages | 70-74 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2009 Dec 1 |
| Event | 2009 International Conference on Innovations in Information Technology, IIT '09 - Al-Ain, United Arab Emirates Duration: 2009 Dec 15 → 2009 Dec 17 |
Publication series
| Name | 2009 International Conference on Innovations in Information Technology, IIT '09 |
|---|
Other
| Other | 2009 International Conference on Innovations in Information Technology, IIT '09 |
|---|---|
| Country | United Arab Emirates |
| City | Al-Ain |
| Period | 09/12/15 → 09/12/17 |
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All Science Journal Classification (ASJC) codes
- Information Systems
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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 proceeding › Conference contribution
TY - GEN
T1 - A WLAN handoff scheme based on selective channel scan using pre-collected AP information for VoIP application
AU - Kim, Sung Rae
AU - Kim, Kyung Joon
AU - Baek, Jae Jong
AU - Song, Joo Seok
PY - 2009/12/1
Y1 - 2009/12/1
N2 - 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.
AB - 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.
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U2 - 10.1109/IIT.2009.5413770
DO - 10.1109/IIT.2009.5413770
M3 - Conference contribution
SN - 9781424456987
T3 - 2009 International Conference on Innovations in Information Technology, IIT '09
SP - 70
EP - 74
BT - 2009 International Conference on Innovations in Information Technology, IIT '09
ER -