NDLI: Adaptive ranging algorithm for fast seamless handoff in WiMAX mobile networks

Content Provider	IEEE Xplore Digital Library
Author	Ben-Jye Chang Ying-Hsin Liang Sung-Ju Hsieh
Copyright Year	2010
Description	Author affiliation: Department of CSIE, National Yunlin University of Science and Technology, Taiwan (Ben-Jye Chang) \|\| Department of CSIE, Chaoyang University of Technology, Taiwan (Sung-Ju Hsieh) \|\| Department of CSIE, Nan-kai University of Technology, Taiwan (Ying-Hsin Liang)
Abstract	The WiMAX multicast and broadcast polling modes uses the Truncated Binary Exponential Backoff (TBEB) algorithm as the Contention Resolution Process among distributed mobile nodes while the network traffic load is nearly saturation. TBEB suffers from high collision probability under a high traffic load. TBEB thus significantly degrades the grade of service, especially while considering handoff in the mobile WiMAX network. Thus, this work first proposes an efficient contention resolution algorithm that consists of two key contributions: 1) providing the adaptive minimum-maximum backoff values algorithm $(AM^{2})$ to partition collision domains and 2) supporting a dynamic waiting-penalty algorithm (DWP) for successful contentions to dynamically decrease CWs while contentions randomly selecting the same CW. Second, we model the proposed approach as a discrete-time Markov chain model, and then mathematically analyze important metrics: collision probability and throughput. Numerical results indicate that the analytical results are very close to the simulation results, which justify the accuracy of the analytical model. Additionally, the proposed algorithm outperforms IEEE 802.16 and all compared approaches in collision probability and network throughput.
Starting Page	665
Ending Page	670
File Size	720257
Page Count	6
File Format	PDF
ISBN	9781424477548
ISSN	15301346
e-ISBN	9781424477555
DOI	10.1109/ISCC.2010.5546729
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-22
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Markov processes WiMAX Analytical models Heuristic algorithms IEEE 802.16 Standards Partitioning algorithms Delay backoff window Markov chain fast handoff contention resolution procedure
Content Type	Text
Resource Type	Article
Subject	Signal Processing Mathematics Computer Networks and Communications Computer Science Applications Software

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