NDLI: Throughput Optimization of non-real-time flows with delay guarantee of real-time flows in WLANs

Content Provider	IEEE Xplore Digital Library
Author	Yayu Gao Lin Dai Xiaojun Hei
Copyright Year	2015
Description	Author affiliation: Sch. of Electron. Inf. & Commun., Huazhong Univ. of Sci. & Technol., Wuhan, China (Yayu Gao; Xiaojun Hei) \|\| Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong, China (Lin Dai)
Abstract	Due to the rapid growth of real-time applications in wireless local area networks (WLANs), quality-of-service (QoS) guarantee becomes one of the key issues for IEEE 802.11e enhanced distributed channel access (EDCA) networks. In contrast to most existing studies which only focus on providing delay guarantee to real-time flows, in this paper we study the open question of how to adaptively tune system parameters to maximize the aggregate throughput of non-real-time flows with a certain mean access delay constraint on real-time flows for saturated IEEE 802.11e EDCA networks. Explicit expressions of the maximum aggregate throughput of non-real-time flows and the optimal initial backoff window sizes are obtained, and verified by simulation results. The analysis shows that for a given mean access delay constraint, the maximum aggregate throughput of non-real-time flows declines as the number of real-time nodes grows. It drops to zero when the number of realtime nodes exceeds a critical threshold, indicating that the delay requirement cannot be satisfied. An admission control scheme is further proposed, where the maximum number of real-time nodes that can be enrolled is derived as a linearly increasing function of the mean access delay constraint.
Starting Page	1541
Ending Page	1546
File Size	1396145
Page Count	6
File Format	PDF
e-ISBN	9781467364324
DOI	10.1109/ICC.2015.7248543
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real-time systems Artificial neural networks Integrated circuits Analytical models Artificial intelligence quality-ofservice IEEE 802.11e EDCA networks real-time nonreal-time delay guarantee throughput optimization
Content Type	Text
Resource Type	Article

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