TY - JOUR
T1 - A call admission control framework for voice over WLANs
AU - Qian, Yi
AU - Hu, Rose Qingyang
AU - Chen, Hsiao Hwa
N1 - Funding Information:
The work reported in this article was partially supported by the U.S. National Science Foundation under the NSF Award no. 0424546, an NSF EPSCoR startup grant in Puerto Rico, and National Science Council, Taiwan, under the grants NSC 94-2213-E-110-013 and NSC 94-2213-E-110-014.
PY - 2006/2
Y1 - 2006/2
N2 - In this article a call admission control framework is presented for voice over wireless local area networks (WLANs). The framework, called WLAN Voice Manager, manages admission control for voice over IP (VoIP) calls with WLANs as the access networks. WLAN Voice Manager interacts with WLAN medium access control (MAC) layer protocols, soft-switches (VoIP call agents), routers, and other network devices to perform end-to-end (ETE) quality of service (QoS) provisioning and control for VoIP calls originated from WLANs. By implementing the proposed WLAN Voice Manager in the WLAN access network, a two-level ETE VoIP QoS control mechanism can be achieved: level 1 QoS for voice traffic over WLAN medium access and level 2 QoS for ETE VoIP services in the networks with WLANs as the local access. The implementation challenges of this framework are discussed for both level 1 and level 2. Possible solutions to the implementation issues are proposed and other remaining open issues are also addressed.
AB - In this article a call admission control framework is presented for voice over wireless local area networks (WLANs). The framework, called WLAN Voice Manager, manages admission control for voice over IP (VoIP) calls with WLANs as the access networks. WLAN Voice Manager interacts with WLAN medium access control (MAC) layer protocols, soft-switches (VoIP call agents), routers, and other network devices to perform end-to-end (ETE) quality of service (QoS) provisioning and control for VoIP calls originated from WLANs. By implementing the proposed WLAN Voice Manager in the WLAN access network, a two-level ETE VoIP QoS control mechanism can be achieved: level 1 QoS for voice traffic over WLAN medium access and level 2 QoS for ETE VoIP services in the networks with WLANs as the local access. The implementation challenges of this framework are discussed for both level 1 and level 2. Possible solutions to the implementation issues are proposed and other remaining open issues are also addressed.
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U2 - 10.1109/MWC.2006.1593524
DO - 10.1109/MWC.2006.1593524
M3 - Article
AN - SCOPUS:32644484520
SN - 1536-1284
VL - 13
SP - 44
EP - 50
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 1
ER -