|
naistar (NAIST Academic Repository) >
学術リポジトリ naistar / NAIST Academic Repository naistar >
学術雑誌論文 / Journal Article >
情報科学研究科 / Graduate School of Information Science >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10061/6047
|
| Title: | Handover Management for VoWLAN Based on Estimation of AP Queue Length and Frame Retries |
| Authors: | Niswar, Muhammad
Kashihara, Shigeru
Tsukamoto, Kazuya
Kadobayashi, Youki
Yamaguchi, Suguru |
| Issue Date: | Oct-2009 |
| Publisher: | Institute of Electronics, Information and Communication Engineers |
| Journal Title: | IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS |
| Volume: | E92D |
| Issue: | 10 |
| Start page: | 1847 |
| End page: | 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. |
| URI: | http://hdl.handle.net/10061/6047 |
| URL: | http://search.ieice.org |
| ISSN: | 0916-8532 |
| Rights: | Copyright (C)2009 IEICE |
| Text Version: | publisher |
| Publisher DOI: | 10.1587/transinf.E92.D.1847 |
| Appears in Collections: | 情報科学研究科 / Graduate School of Information Science
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
