Voice over IP performance monitoring
ACM SIGCOMM Computer Communication Review
Performance evaluation of layer 3 low latency handoff mechanisms
Mobile Networks and Applications
Theory, Volume 1, Queueing Systems
Theory, Volume 1, Queueing Systems
Measurement and Analysis of the VoIP Capacity in IEEE 802.11 WLAN
IEEE Transactions on Mobile Computing
Mobility management for VoIP in 3G systems: evaluation of low-latency handoff schemes
IEEE Wireless Communications
Topology-aided cross-layer fast handoff designs for IEEE 802.11/mobile IP environments
IEEE Communications Magazine
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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The inexpensive deployment combined with the high bandwidth availability of IEEE 802.11 wireless local area networks led to their proliferation. Although WLANs provide the means of portable computing and networking, the transition to full mobility support, despite the significant progress, has not yet achieved. As an effect, minimization of Handoff Delay is the one of the crucial factors and challenges to deliver multimedia services of high quality (i.e. VoIP over WLANs). The aim of this paper is to access and evaluate the impact of mobility protocols in terms of Handoff Delay on VoIP quality. Low Latency Handoffs in Mobile IPv4 has been used since it is the most promising extension of the standard network-layered Mobility Management protocol of Mobile IPv4. According to the performed analysis, this paper presents VoIP Quality (in terms of R-factor) during handoff scenarios for various VoIP codecs using the aforementioned mobility protocol through OPNET simulation. Through simulation, it is shown that the achieved reduction of Handoff Delay can lead to VoIP Quality improvements in terms of service continuity in all-IP Wireless Access Networking environments.