https://scholars.lib.ntu.edu.tw/handle/123456789/429995
標題: | Interference Aware Coordinated Multiuser Access in Multi-band WLAN for Next Generation Low Power Applications | 作者: | B. Pandya TZI-DAR CHIUEH |
關鍵字: | 802.11ah; Contention; Dense user networks; Dynamic frequency allocation; Low power; Multi-band WLAN; Multiuser access; Overlapping BSSes; Receiver combining; Transmission probability; Transmitted power | 公開日期: | 2019 | 卷: | 25 | 期: | 4 | 起(迄)頁: | 1965-1981 | 來源出版物: | Wireless Networks | 摘要: | With the new IEEE 802.11ah standard aimed at improving the existing WLAN standard for the machine-to-machine applications, there is a renewed interest from the research community to analyze and suggest improvements to the standard. With thousands of smart devices and sensors involved in an internet of things network, the interference from multiuser access becomes a serious issue. This paper presents an access point (AP) coordinated multiuser access mechanism for such applications, where the strategy to improve channel usage efficiency is based on analyzing interference present in the neighborhood. Interference experienced in such a system is a function of node location, transmitted power, traffic load and resource allocation. In our proposed system, each WLAN AP from the overlapping basic service sets employs multiple frequency sub-bands and associates user nodes to these sub-bands dynamically. We show that this proposed interference-aware dynamic frequency allocation (IDFA) scheme, which is based on neighborhood contention analysis, can significantly enhance the system throughput and improve the energy efficiency by about 30%. In dense user node deployments, the channel access efficiency of the IDFA multi-band scheme is 2–3 times higher than that of the single band legacy WLAN. © 2018, Springer Science+Business Media, LLC, part of Springer Nature. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/429995 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049567242&doi=10.1007%2fs11276-018-1790-4&partnerID=40&md5=73fcc29b7022d807fab8d8cfb94e1a53 |
ISSN: | 10220038 | DOI: | 10.1007/s11276-018-1790-4 | SDG/關鍵字: | Energy efficiency; Frequency allocation; IEEE Standards; Low power electronics; 802.11ah; Contention; Dynamic frequency allocation; Low Power; Multi band; Multiuser access; Overlapping BSSes; Transmission probabilities; Transmitted power; User networks; Wireless local area networks (WLAN) |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。