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


Design and Implementation of Cross-layer Architecture for Seamless VoIP Handover
著者
  Yuzo Taenaka, Shigeru Kashihara, Kazuya Tsukamoto,Youki Kadobayashi, Yuji Oie
 
雑誌名/会議名
  The Third IEEE International Workshop on Heterogeneous Multi-Hop Wireless and Mobile Networks 2007 (IEEE MHWMN’07), Pisa, Italy 2007 年 10 月
 
アブストラクト
  In the near future, wireless local area networks (WLANs) will overlap to provide continuous coverage over a wide area. In such ubiquitous WLANs, a mobile node (MN) freely moves between WLANs with different IP subnets during VoIP communication. In such situations, since an MN experiences several handovers, the communication quality is degraded. In previous studies, in order to solve this problem, we proposed a seamless handover scheme based on frame retransmissions and demonstrated its effectiveness through simulation experiments. However, any other existing schemes have not yet demonstrated the effectiveness of cross-layer architecture exploiting the number of frame retransmissions on a real system. Thus, in the present paper, we design and implement the handover scheme based on the number of frame retransmissions. Then, we show preliminary results in a real wireless environment. In our implementation, we propose a cross layer architecture using a shared memory to pass the information, i. e., the number of frame retransmissions, from MAC layer to Transport layer, between two other layers. Finally, we evaluate the performance of the proposed prototype system in a simple topology.
 
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.