IEEE 802.11Ax
Survey and Performance Evaluation of the Upcoming Next Generation WLAN Standard - IEEE 802.11ax Qiao Qu1, Bo Li1, Member, IEEE, Mao Yang*1, Member, IEEE, Zhongjiang Yan1, Member, IEEE, Annan Yang1, Jian Yu2, Ming Gan2, Yunbo Li2, Xun Yang2, Osama Aboul-Magd2, Senior Member, IEEE, Edward Au2, Senior Member, IEEE, Der-Jiunn Deng3, Member, IEEE, and Kwang-Cheng Chen4, Fellow, IEEE 1School of Electronics and Information, Northwestern Polytechnical University, Xi’an, China. 2Huawei Technologies Co., Ltd., China. 3the Department of Computer Science and Information Engineering, National Changhua University of Education, Changhua, Taiwan. 4the Department of Electrical Engineering, University of South Florida, Florida, USA. Abstract —With the ever-increasing demand for wireless traffic and quality of serives (QoS), wireless local area networks (WLANs) have developed into one of the most dominant wireless networks that fully influence human life. As the most widely used WLANs standard, Institute of Electrical and Electronics Engineers (IEEE) 802.11 will release the upcoming next generation WLANs standard amendment: IEEE 802.11ax. This article comprehensively surveys and analyzes the application scenarios, technical requirements, standardization process, key technologies, and performance evaluations of IEEE 802.11ax. Starting from the technical objectives and requirements of IEEE 802.11ax, this article pays special attention to high-dense deployment scenarios. After that, the key technologies of IEEE 802.11ax, including the physical layer (PHY) enhancements, multi-user (MU) medium access control (MU-MAC), spatial reuse (SR), and power efficiency are discussed in detail, covering both standardization technologies as well as the latest academic studies. Furthermore, performance requirements of IEEE 802.11ax are evaluated via a newly proposed systems and link-level integrated simulation platform (SLISP).
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