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
도메인 간 WLAN에서 하나의 AP(액세스 포인트)에서 다른 액세스 포인트(AP)로 통신 경로를 전환하는 것은 HO(핸드오버) 중 통신 품질이 저하될 가능성이 높기 때문에 VoIP(Voice over IP)와 같이 지연에 민감한 애플리케이션에 중요한 과제입니다. HO 동안 VoIP 품질을 유지하려면 많은 문제를 해결해야 합니다. 특히 VoIP와 같은 양방향 통신에서는 VoIP 통화가 늘어나면서 AP에 병목 현상이 발생한다. 결과적으로 AP 버퍼에 큐잉된 패킷은 큐 길이의 증가나 버퍼 오버플로로 인해 큰 큐잉 지연이나 패킷 손실이 발생하여 MN(모바일 노드) 측의 VoIP 품질이 저하될 수 있습니다. 이러한 저하를 방지하기 위해 MN은 무선 네트워크 상태의 변화, 즉 무선 링크 품질 저하 및 AP에서의 혼잡 상태에 대응하여 적절하고 자율적으로 HO를 실행해야 합니다. 본 논문에서는 HO 동안 VoIP 품질을 유지하기 위해 MN에서의 프레임 재시도, AP 큐 길이, 전송 속도를 고려한 HO 결정 전략을 제안한다. 시뮬레이션 실험을 통해 제안한 방법이 무선 네트워크 상태를 적절하게 감지함으로써 HO 동안 VoIP 품질을 유지할 수 있음을 보여줍니다.
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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},}
부
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 -