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An admission control scheme for IEEE 802.11e wireless local area networks
Includes bibliographical references (leaves 80-84).
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2015
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| _version_ | 1867613294689255424 |
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| access_status_str | Open Access |
| author | Smith, Conroy |
| author2 | Ventura, Neco |
| author_browse | Smith, Conroy Ventura, Neco |
| author_facet | Ventura, Neco Smith, Conroy |
| author_sort | Smith, Conroy |
| collection | Thesis |
| description | Includes bibliographical references (leaves 80-84). |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/14701 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:51.607Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/14701 An admission control scheme for IEEE 802.11e wireless local area networks Smith, Conroy Ventura, Neco Electrical Engineering and Electronic Engineering Wireless Local Area Networks Quality of Service Includes bibliographical references (leaves 80-84). Recent times has seen a tremendous increase in the deployment and use of 802.11 Wireless Local Area Networks (WLANs). These networks are easy to deploy and maintain, while providing reasonably high data rates at a low cost. In the paradigm of Next-Generation-Networks (NGNs), WLANs can be seen as an important access network technology to support IP multimedia services. However a traditional WLAN does not provide Quality of Service (QoS) support since it was originally designed for best effort operation. The IEEE 802. 11e standard was introduced to overcome the lack of QoS support for the legacy IEEE 802 .11 WLANs. It enhances the Media Access Control (MAC) layer operations to incorporate service differentiation. However, there is a need to prevent overloading of wireless channels, since the QoS experienced by traffic flows is degraded with heavily loaded channels. An admission control scheme for IEEE 802.11e WLANs would be the best solution to limit the amount of multimedia traffic so that channel overloading can be prevented. Some of the work in the literature proposes admission control solutions to protect the QoS of real-time traffic for IEEE 802.11e Enhanced Distributed Channel Access (EDCA). However, these solutions often under-utilize the resources of the wireless channels. A measurement-aided model-based admission control scheme for IEEE 802.11e EDCA WLANs is proposed to provide reasonable bandwidth guarantees to all existing flows. The admission control scheme makes use of bandwidth estimations that allows the bandwidth guarantees of all the flows that are admitted into the network to be protected. The bandwidth estimations are obtained using a developed analytical model of IEEE 802.11e EDCA channels. The admission control scheme also aims to accept the maximum amount of flows that can be accommodated by the network's resources. Through simulations, the performance of the proposed admission control scheme is evaluated using NS-2. Results show that accurate bandwidth estimations can be obtained when comparing the estimated achievable bandwidth to actual simulated bandwidth. The results also validate that the bandwidth needs of all admitted traffic are always satisfied when the admission control scheme is applied. It was also found that the admission control scheme allows the maximum amount of flows to be admitted into the network, according the network's capacity. 2015-11-08T04:44:24Z 2015-11-08T04:44:24Z 2008 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/14701 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering and Electronic Engineering Wireless Local Area Networks Quality of Service Smith, Conroy An admission control scheme for IEEE 802.11e wireless local area networks |
| thesis_degree_str | Master's |
| title | An admission control scheme for IEEE 802.11e wireless local area networks |
| title_full | An admission control scheme for IEEE 802.11e wireless local area networks |
| title_fullStr | An admission control scheme for IEEE 802.11e wireless local area networks |
| title_full_unstemmed | An admission control scheme for IEEE 802.11e wireless local area networks |
| title_short | An admission control scheme for IEEE 802.11e wireless local area networks |
| title_sort | admission control scheme for ieee 802 11e wireless local area networks |
| topic | Electrical Engineering and Electronic Engineering Wireless Local Area Networks Quality of Service |
| url | http://hdl.handle.net/11427/14701 |
| work_keys_str_mv | AT smithconroy anadmissioncontrolschemeforieee80211ewirelesslocalareanetworks AT smithconroy admissioncontrolschemeforieee80211ewirelesslocalareanetworks |