| Presentation | 2017-03-03 A Study for Improvement of Throughput in High Dense Wireless LAN Access Networks Takahiro Kawasaki, Yumi Takaki, Tomio Kamada, Chikara Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, wireless access points (APs) based on IEEE 802.11 standard are widely deployed for off-loading as widespread use of smart-phone leads to more data traffic. However, since IEEE 802.11 employs CSMA/CA as a basic medium access control, there could be dead spots where terminals suffer from much lower throughput than the others depending on the relative terminal positions owing to frame collisions by hidden terminals and loss of transmission opportunities by exposed terminals. To cope with this problem, in this paper, we propose a novel scheme with combination of a carrier sense threshold control (CSTC) in which each terminal autonomously adjusts its CST and a transmission opportunity control in which each AP gives outer terminals more transmission opportunities than vicinal terminals by using CTS-self. Simulation experiments are conducted in order to compare the proposal scheme to a scheme employing only the CSTC and a scheme employing the transmission opportunity control using CTS-self. Simulation results show that the proposal scheme provides more the lowest throughput than the others so that the effectiveness of the proposal scheme is confirmed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IEEE 802.11 / dead-spot / lowest throughput / carrier sense threshold control / CTS-self |
| Paper # | NS2016-238 |
| Date of Issue | 2017-02-23 (NS) |
| Conference Information | |
| Committee | NS / IN |
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| Conference Date | 2017/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | OKINAWA ZANPAMISAKI ROYAL HOTEL |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Hideki Tode(Osaka Pref. Univ.) / Katsunori Yamaoka(Tokyo Inst. of Tech.) |
| Vice Chair | Yoshikatsu Okazaki(NTT) / Takuji Kishida(NTT) |
| Secretary | Yoshikatsu Okazaki(Kyushu Inst. of Tech.) / Takuji Kishida(NTT) |
| Assistant | Shohei Kamamura(NTT) / Kunitake Kaneko(Keio Univ.) / Takashi Natsume(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Information Networks |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study for Improvement of Throughput in High Dense Wireless LAN Access Networks |
| Sub Title (in English) | |
| Keyword(1) | IEEE 802.11 |
| Keyword(2) | dead-spot |
| Keyword(3) | lowest throughput |
| Keyword(4) | carrier sense threshold control |
| Keyword(5) | CTS-self |
| 1st Author's Name | Takahiro Kawasaki |
| 1st Author's Affiliation | Kobe University(Kobe Univ.) |
| 2nd Author's Name | Yumi Takaki |
| 2nd Author's Affiliation | Kobe University(Kobe Univ.) |
| 3rd Author's Name | Tomio Kamada |
| 3rd Author's Affiliation | Kobe University(Kobe Univ.) |
| 4th Author's Name | Chikara Ohta |
| 4th Author's Affiliation | Kobe University(Kobe Univ.) |
| Date | 2017-03-03 |
| Paper # | NS2016-238 |
| Volume (vol) | vol.116 |
| Number (no) | NS-484 |
| Page | pp.pp.463-468(NS), |
| #Pages | 6 |
| Date of Issue | 2017-02-23 (NS) |