大学サイト   学部サイト   学科サイト   EnglishPages
 
旧尾家・塚本研究室です.尾家祐二 現・九州工業大学学長の情報は こちら.
   
研究業績


Handover Management for VoWLAN based on Estimation of AP Queue Length and Frame Retries
著者
  Muhammad Niswar, Shigeru Kashihara, Kazuya Tsukamoto, Youki Kadobayashi, Suguru Yamaguchi
 
雑誌名/会議名
  IEICE Trans. on Info. and Sys, Special issue on ``New Technologies and their Applications of the Internet Vol. E92-D No. 10 pp. 1847-1856, Oct. 2009. 2009 年 10 月
 
アブストラクト
  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 bu®er may experience a large queuing delay or packet losses due to increase in queue length or bu®er over°ow, 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.
 
キーワード
  Mobile, Transport protocol, Wireless
 
記述言語
  English
 
 

web_admin [ at ] infonet.cse.kyutech.ac.jp /  Copyright (c) 2016 Oie & Tsukamoto Laboratory, All Right Reserved.