Contention window size adjustment in unsaturated IEEE 802.11 WLANs

Chun Hsien Sung; Der-Jiunn Deng

doi:10.1007/978-3-030-00410-1_1

Contention window size adjustment in unsaturated IEEE 802.11 WLANs

Chun Hsien Sung, Der-Jiunn Deng

Department of Computer Science and Information Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In next generation mobile networks, more and more throughput of network is required under the dense environment. There are some researches discuss how to solve the predicament of throughput. But they usually analyze it under the saturated environment. Most of their contention window size are also not optimal to fetch the maximum throughput. This paper is the first one to fetch the fixed optimal window size under the unsaturated environment which is closer to the real network. It is based on the Distributed Coordination Function (DCF) in Medium Access Control layer of IEEE 802.11 Wireless LAN to control the contention window size for reducing the collision problem and improving the throughput. A simplified one-dimension Markov Chain with a new idle state is proposed to simulate the unsaturated model. Then the formula of transmission probability under the unsaturated model and the equation which is used to fetch the optimized contention window size are analyzed. Comparing with the related analysis model in the simulation of the throughput and the collision rate. The result shows that the proposed model under unsaturated environment is better than before.

Original language	English
Title of host publication	IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings
Editors	Yi-Bing Lin, Ilsun You, Der-Jiunn Deng, Chun-Cheng Lin
Publisher	Springer Verlag
Pages	3-10
Number of pages	8
ISBN (Print)	9783030004095
DOIs	https://doi.org/10.1007/978-3-030-00410-1_1
Publication status	Published - 2018 Jan 1
Event	3rd International Conference on IoT as a Service, IoTaaS 2017 - Taichun, Taiwan Duration: 2017 Sep 20 → 2017 Sep 22

Publication series

Name	Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume	246
ISSN (Print)	1867-8211

Other

Other	3rd International Conference on IoT as a Service, IoTaaS 2017
Country	Taiwan
City	Taichun
Period	17-09-20 → 17-09-22

All Science Journal Classification (ASJC) codes

Computer Networks and Communications

Access to Document

10.1007/978-3-030-00410-1_1

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Sung, C. H., & Deng, D-J. (2018). Contention window size adjustment in unsaturated IEEE 802.11 WLANs. In Y-B. Lin, I. You, D-J. Deng, & C-C. Lin (Eds.), IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings (pp. 3-10). (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST; Vol. 246). Springer Verlag. https://doi.org/10.1007/978-3-030-00410-1_1

Sung, Chun Hsien ; Deng, Der-Jiunn. / Contention window size adjustment in unsaturated IEEE 802.11 WLANs. IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings. editor / Yi-Bing Lin ; Ilsun You ; Der-Jiunn Deng ; Chun-Cheng Lin. Springer Verlag, 2018. pp. 3-10 (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST).

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abstract = "In next generation mobile networks, more and more throughput of network is required under the dense environment. There are some researches discuss how to solve the predicament of throughput. But they usually analyze it under the saturated environment. Most of their contention window size are also not optimal to fetch the maximum throughput. This paper is the first one to fetch the fixed optimal window size under the unsaturated environment which is closer to the real network. It is based on the Distributed Coordination Function (DCF) in Medium Access Control layer of IEEE 802.11 Wireless LAN to control the contention window size for reducing the collision problem and improving the throughput. A simplified one-dimension Markov Chain with a new idle state is proposed to simulate the unsaturated model. Then the formula of transmission probability under the unsaturated model and the equation which is used to fetch the optimized contention window size are analyzed. Comparing with the related analysis model in the simulation of the throughput and the collision rate. The result shows that the proposed model under unsaturated environment is better than before.",

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Sung, CH & Deng, D-J 2018, Contention window size adjustment in unsaturated IEEE 802.11 WLANs. in Y-B Lin, I You, D-J Deng & C-C Lin (eds), IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings. Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, vol. 246, Springer Verlag, pp. 3-10, 3rd International Conference on IoT as a Service, IoTaaS 2017, Taichun, Taiwan, 17-09-20. https://doi.org/10.1007/978-3-030-00410-1_1

Contention window size adjustment in unsaturated IEEE 802.11 WLANs. / Sung, Chun Hsien; Deng, Der-Jiunn.

IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings. ed. / Yi-Bing Lin; Ilsun You; Der-Jiunn Deng; Chun-Cheng Lin. Springer Verlag, 2018. p. 3-10 (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST; Vol. 246).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - In next generation mobile networks, more and more throughput of network is required under the dense environment. There are some researches discuss how to solve the predicament of throughput. But they usually analyze it under the saturated environment. Most of their contention window size are also not optimal to fetch the maximum throughput. This paper is the first one to fetch the fixed optimal window size under the unsaturated environment which is closer to the real network. It is based on the Distributed Coordination Function (DCF) in Medium Access Control layer of IEEE 802.11 Wireless LAN to control the contention window size for reducing the collision problem and improving the throughput. A simplified one-dimension Markov Chain with a new idle state is proposed to simulate the unsaturated model. Then the formula of transmission probability under the unsaturated model and the equation which is used to fetch the optimized contention window size are analyzed. Comparing with the related analysis model in the simulation of the throughput and the collision rate. The result shows that the proposed model under unsaturated environment is better than before.

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Sung CH, Deng D-J. Contention window size adjustment in unsaturated IEEE 802.11 WLANs. In Lin Y-B, You I, Deng D-J, Lin C-C, editors, IoT as a Service - Third International Conference, IoTaaS 2017, Proceedings. Springer Verlag. 2018. p. 3-10. (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST). https://doi.org/10.1007/978-3-030-00410-1_1