Open AccessQoS-Based Two-Level user Scheduling Scheme for MU-MIMO Wireless LANs
Author(s) -
D. Srinivasa Rao,
V. Berlin Hency
Publication year - 2019
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.a1008.1291s319
Subject(s) - computer science , computer network , scheduling (production processes) , quality of service , mimo , fading , wireless , local area network , throughput , channel (broadcasting) , multi user mimo , wireless network , real time computing , telecommunications , engineering , operations management
The advances in physical layer technology has led to the performance upgradation of wireless local area networks (WLANs). More recently, multi-input multi-output (MIMO) is considered to be a key technology to enable high data rate transmission in WLANs. However, the actual benefit of this approach can be utilized, if there is an appropriate mechanism to select and schedule the users. Also, providing Quality of Service (QoS) support to user demands has become a major task in WLANs. In this paper, a two-level user scheduling approach for WLANs is discussed and its performance is evaluated using high-transmission rates with the assumption of frequency selective fading. For the purpose of comparison, some well-known medium access control (MAC) scheduling schemes are considered. It is shown that, the proposed scheme enhances throughput and achieves fairness among the users. Further, this scheme can be used to reduce contention during the acquisition of channel feedback.