NDLI: Mathematical system modeling and dynamic resource allocation through Kalman Filter based prediction in IEEE 802.11 PSM

Content Provider	IEEE Xplore Digital Library
Author	Jangsoo Lee Sungchun Kim
Copyright Year	2009
Description	Author affiliation: Computer Science & Engineering Department, Sogang University, Seoul, South Korea (Jangsoo Lee; Sungchun Kim)
Abstract	In the IEEE 802.11 power saving mode (PSM) which is specified for distributed coordinate function (DCF), time is divided into beacon intervals. Beacon interval is composed of ATIM window and data transmit duration. When data transmission is needed, hosts must send and receive ATIM window frames during ATIM window. According to ATIM frames, each host decides to sleep or awake. Clearly, this method is not optimized one since it can't manage dynamic transmitting situation. To solve this problem, dynamic power saving mechanism (DPSM) is proposed. But in this method changing ATIM window size is linearly progressed and considering situation is highly limited. So we have developed new dynamic traffic assignment (DTA) systems for optimizing PSM in wireless networks. For this purpose, we bring in optimal state estimation which is formalized by mathematical equations that utilize a proven error calculation method, Kalman Filter. This method makes it possible to predict the best suitable ATIM window size to increase possible doze time. And it also improves power efficiency of wireless devices more than the one achieved through DPSM. In this way, we have developed basic mathematical system modeling in wireless networks and the usage of Kalman Filter. Simulation results show that proposed approach outperforms previous mechanisms PSM, DPSM in terms of throughput and the amount of energy consumed.
Starting Page	1
Ending Page	6
File Size	570663
Page Count	6
File Format	PDF
ISBN	9781424435067
DOI	10.1109/ICIT.2009.4939599
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-10
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Modeling Resource management Wireless networks Data communication Optimization methods Power system management Telecommunication traffic State estimation Equations Throughput
Content Type	Text
Resource Type	Article

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