| Presentation | 2005-07-15 Investigation of Novel Decision Criteria for Efficient Handover in WLANs Ryouichi IJIMA, Kazuya TSUKAMOTO, Shigeru KASHIHARA, Yuji OIE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ubiquitous networks enabling access by mobile nodes (MNs) at anytime and at any location will consists of several different WLANs, so that it is likely that the MN will traverse several WLANs during communication. In such a case, how to avoid performance degradation during the handover becomes a critical issue. Majority of existing studies deal with handover decisions based on the upper layer information such as packet loss, but none of them extensively examine the criteria for a handover decision, and investigate how it can affect the performance degradation just before the handover is decided to be executed. In this paper, we first extensively investigate the TCP performance under the criteria for handover decision employed by existing studies. Then, we deal with the Layer 2 behavior, and employ that a cross-layer approach, which enables a MN to perceive the deterioration of wireless link quickly and exactly, is necessary to avoid the performance degradation during a handover. Finally, we identify how the movement of the MN affects the overall TCP performance of its WLAN and its own TCP performance. Through simulations, we show that degradation during a handover can effectively be avoided by exploiting Layer 2 information. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless LANs / handover / criteria / frame retry / cross-layer |
| Paper # | IN2005-40 |
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| Conference Information | |
| Committee | IN |
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| Conference Date | 2005/7/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Networks (IN) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation of Novel Decision Criteria for Efficient Handover in WLANs |
| Sub Title (in English) | |
| Keyword(1) | Wireless LANs |
| Keyword(2) | handover |
| Keyword(3) | criteria |
| Keyword(4) | frame retry |
| Keyword(5) | cross-layer |
| 1st Author's Name | Ryouichi IJIMA |
| 1st Author's Affiliation | Department of Computer Science and Electronics, Kyushu Institute of Technology() |
| 2nd Author's Name | Kazuya TSUKAMOTO |
| 2nd Author's Affiliation | Department of Computer Science and Electronics, Kyushu Institute of Technology |
| 3rd Author's Name | Shigeru KASHIHARA |
| 3rd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| 4th Author's Name | Yuji OIE |
| 4th Author's Affiliation | Department of Computer Science and Electronics, Kyushu Institute of Technology |
| Date | 2005-07-15 |
| Paper # | IN2005-40 |
| Volume (vol) | vol.105 |
| Number (no) | 178 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |