A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks
IEEE 802.11 WLAN utilizes a distributed function at its MAC layer, namely, DCF to access the wireless medium. Due to its distributed nature, DCF is able to guarantee working stability in a wireless medium while maintaining the assembling and maintenance cost in a low level. However, DCF is inefficie...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Journal of Computer Systems, Networks, and Communications |
| Online Access: | http://dx.doi.org/10.1155/2010/856724 |
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| author | Navid Tadayon Saadan Zokaei Elaheh Askari |
| author_facet | Navid Tadayon Saadan Zokaei Elaheh Askari |
| author_sort | Navid Tadayon |
| collection | DOAJ |
| description | IEEE 802.11 WLAN utilizes a distributed function at its MAC layer, namely, DCF to access the wireless medium. Due to its distributed nature, DCF is able to guarantee working stability in a wireless medium while maintaining the assembling and maintenance cost in a low level. However, DCF is inefficient in dealing with real-time traffics due to its incapability on providing QoS. IEEE 802.11e was introduced as a supplementary standard to cope with this problem. This standard introduces an Enhanced Distributed Coordination Function (EDCF) that works based on diff-Serve model and can serve multiple classes of traffics (by using different prioritizations schemes). With the emergence of new time-sensitive applications, EDCF has proved to be yet inefficient in dealing with these kinds of traffics because it could not provide network with well-differentiated QoS. In this study, we propose a novel prioritization scheme to improve QoS level in IEEE 802.11e network. In this scheme, we replace Uniform PDF with Gamma PDF, which has salient differentiating properties. We investigate the suitability and superiority of this scheme on furnishing network with well-differentiated QoS using probabilistic analysis. We strengthen our claims by extensive simulation runs. |
| format | Article |
| id | doaj-art-462eefd4d361416a9f99f155aff0386d |
| institution | OA Journals |
| issn | 1687-7381 1687-739X |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Computer Systems, Networks, and Communications |
| spelling | doaj-art-462eefd4d361416a9f99f155aff0386d2025-08-20T02:37:49ZengWileyJournal of Computer Systems, Networks, and Communications1687-73811687-739X2010-01-01201010.1155/2010/856724856724A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e NetworksNavid Tadayon0Saadan Zokaei1Elaheh Askari2The Electrical Engineering Department, K. N. Toosi University of Technology, Seyed khandan, Dr. Shariati Ave, P.O. Box 16315-1355, Tehran, IranThe Electrical Engineering Department, K. N. Toosi University of Technology, Seyed khandan, Dr. Shariati Ave, P.O. Box 16315-1355, Tehran, IranThe Electrical Engineering Department, K. N. Toosi University of Technology, Seyed khandan, Dr. Shariati Ave, P.O. Box 16315-1355, Tehran, IranIEEE 802.11 WLAN utilizes a distributed function at its MAC layer, namely, DCF to access the wireless medium. Due to its distributed nature, DCF is able to guarantee working stability in a wireless medium while maintaining the assembling and maintenance cost in a low level. However, DCF is inefficient in dealing with real-time traffics due to its incapability on providing QoS. IEEE 802.11e was introduced as a supplementary standard to cope with this problem. This standard introduces an Enhanced Distributed Coordination Function (EDCF) that works based on diff-Serve model and can serve multiple classes of traffics (by using different prioritizations schemes). With the emergence of new time-sensitive applications, EDCF has proved to be yet inefficient in dealing with these kinds of traffics because it could not provide network with well-differentiated QoS. In this study, we propose a novel prioritization scheme to improve QoS level in IEEE 802.11e network. In this scheme, we replace Uniform PDF with Gamma PDF, which has salient differentiating properties. We investigate the suitability and superiority of this scheme on furnishing network with well-differentiated QoS using probabilistic analysis. We strengthen our claims by extensive simulation runs.http://dx.doi.org/10.1155/2010/856724 |
| spellingShingle | Navid Tadayon Saadan Zokaei Elaheh Askari A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks Journal of Computer Systems, Networks, and Communications |
| title | A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks |
| title_full | A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks |
| title_fullStr | A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks |
| title_full_unstemmed | A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks |
| title_short | A Novel Prioritization Scheme to Improve QoS in IEEE 802.11e Networks |
| title_sort | novel prioritization scheme to improve qos in ieee 802 11e networks |
| url | http://dx.doi.org/10.1155/2010/856724 |
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