The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
La commutation d'un chemin de communication d'un point d'accès (AP) à un autre dans les WLAN inter-domaines constitue un défi crucial pour les applications sensibles aux délais telles que la voix sur IP (VoIP), car la qualité de la communication lors du transfert (HO) est plus susceptible d'être détériorée. Pour maintenir la qualité VoIP pendant HO, nous devons résoudre de nombreux problèmes. En particulier, dans les communications bidirectionnelles telles que la VoIP, un point d'accès devient un goulot d'étranglement avec l'augmentation des appels VoIP. En conséquence, les paquets mis en file d'attente dans le tampon AP peuvent subir un retard de file d'attente important ou des pertes de paquets en raison de l'augmentation de la longueur de la file d'attente ou d'un débordement de tampon, provoquant ainsi une dégradation de la qualité VoIP du côté des nœuds mobiles (MN). Pour éviter cette dégradation, les MN doivent exécuter HO de manière appropriée et autonome en réponse au changement de l'état du réseau sans fil, c'est-à-dire à la détérioration de la qualité de la liaison sans fil et à l'état de congestion au niveau de l'AP. Dans cet article, nous proposons une stratégie de décision HO prenant en compte les nouvelles tentatives de trame, la longueur de la file d'attente AP et le débit de transmission à un MN pour maintenir la qualité VoIP pendant HO. Grâce à des expériences de simulation, nous montrons ensuite que notre méthode proposée peut maintenir la qualité VoIP pendant HO en détectant correctement l'état du réseau sans fil.
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Muhammad NISWAR, Shigeru KASHIHARA, Kazuya TSUKAMOTO, Youki KADOBAYASHI, Suguru YAMAGUCHI, "Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries" in IEICE TRANSACTIONS on Information,
vol. E92-D, no. 10, pp. 1847-1856, October 2009, doi: 10.1587/transinf.E92.D.1847.
Abstract: Switching a communication path from one Access Point (AP) to another in inter-domain WLANs is a critical challenge for delay-sensitive applications such as Voice over IP (VoIP) because communication quality during handover (HO) is more likely to be deteriorated. To maintain VoIP quality during HO, we need to solve many problems. In particular, in bi-directional communication such as VoIP, an AP becomes a bottleneck with the increase of VoIP calls. As a result, packets queued in the AP buffer may experience a large queuing delay or packet losses due to increase in queue length or buffer overflow, thereby causing the degradation of VoIP quality for the Mobile Nodes (MNs) side. To avoid this degradation, MNs need to appropriately and autonomously execute HO in response to the change in wireless network condition, i.e., the deterioration of wireless link quality and the congestion state at the AP. In this paper, we propose an HO decision strategy considering frame retries, AP queue length, and transmission rate at an MN for maintaining VoIP quality during HO. Through simulation experiments, we then show that our proposed method can maintain VoIP quality during HO by properly detecting the wireless network condition.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.E92.D.1847/_p
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@ARTICLE{e92-d_10_1847,
author={Muhammad NISWAR, Shigeru KASHIHARA, Kazuya TSUKAMOTO, Youki KADOBAYASHI, Suguru YAMAGUCHI, },
journal={IEICE TRANSACTIONS on Information},
title={Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries},
year={2009},
volume={E92-D},
number={10},
pages={1847-1856},
abstract={Switching a communication path from one Access Point (AP) to another in inter-domain WLANs is a critical challenge for delay-sensitive applications such as Voice over IP (VoIP) because communication quality during handover (HO) is more likely to be deteriorated. To maintain VoIP quality during HO, we need to solve many problems. In particular, in bi-directional communication such as VoIP, an AP becomes a bottleneck with the increase of VoIP calls. As a result, packets queued in the AP buffer may experience a large queuing delay or packet losses due to increase in queue length or buffer overflow, thereby causing the degradation of VoIP quality for the Mobile Nodes (MNs) side. To avoid this degradation, MNs need to appropriately and autonomously execute HO in response to the change in wireless network condition, i.e., the deterioration of wireless link quality and the congestion state at the AP. In this paper, we propose an HO decision strategy considering frame retries, AP queue length, and transmission rate at an MN for maintaining VoIP quality during HO. Through simulation experiments, we then show that our proposed method can maintain VoIP quality during HO by properly detecting the wireless network condition.},
keywords={},
doi={10.1587/transinf.E92.D.1847},
ISSN={1745-1361},
month={October},}
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TY - JOUR
TI - Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries
T2 - IEICE TRANSACTIONS on Information
SP - 1847
EP - 1856
AU - Muhammad NISWAR
AU - Shigeru KASHIHARA
AU - Kazuya TSUKAMOTO
AU - Youki KADOBAYASHI
AU - Suguru YAMAGUCHI
PY - 2009
DO - 10.1587/transinf.E92.D.1847
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E92-D
IS - 10
JA - IEICE TRANSACTIONS on Information
Y1 - October 2009
AB - Switching a communication path from one Access Point (AP) to another in inter-domain WLANs is a critical challenge for delay-sensitive applications such as Voice over IP (VoIP) because communication quality during handover (HO) is more likely to be deteriorated. To maintain VoIP quality during HO, we need to solve many problems. In particular, in bi-directional communication such as VoIP, an AP becomes a bottleneck with the increase of VoIP calls. As a result, packets queued in the AP buffer may experience a large queuing delay or packet losses due to increase in queue length or buffer overflow, thereby causing the degradation of VoIP quality for the Mobile Nodes (MNs) side. To avoid this degradation, MNs need to appropriately and autonomously execute HO in response to the change in wireless network condition, i.e., the deterioration of wireless link quality and the congestion state at the AP. In this paper, we propose an HO decision strategy considering frame retries, AP queue length, and transmission rate at an MN for maintaining VoIP quality during HO. Through simulation experiments, we then show that our proposed method can maintain VoIP quality during HO by properly detecting the wireless network condition.
ER -