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Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks
Includes abstract.
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| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2014
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| _version_ | 1867613244712026112 |
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| access_status_str | Open Access |
| author | Falowo, Olabisi Emmanuel |
| author2 | Chan, H Anthony |
| author_browse | Chan, H Anthony Falowo, Olabisi Emmanuel |
| author_facet | Chan, H Anthony Falowo, Olabisi Emmanuel |
| author_sort | Falowo, Olabisi Emmanuel |
| collection | Thesis |
| description | Includes abstract. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5225 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:04.194Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| 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:11427/5225 Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks Falowo, Olabisi Emmanuel Chan, H Anthony Electrical Engineering Includes abstract. Includes bibliographical references (leaves 150-157). Next generation wireless network (NGWN) will be heterogeneous where different radio access technologies (RATs) coexist. This coexistence of different RATs necessitates joint radio resource management (JRRM) for enhanced QoS provisioning and efficient radio resource utilization. Joint call admission control (JCAC) algorithm is one of the joint radio resource management algorithms. The basic functions of a JCAC algorithm are to decide whether or not an incoming call can be accepted into a heterogeneous wireless network, and to determine which of the available RATs is most suitable to admit the incoming call. The objective of a JCAC algorithm is to guarantee the QoS requirements of all accepted calls and at the same time make the best use of the available radio resources. Traditional call admission control algorithms designed for homogeneous wireless networks do not provide a single solution to address the heterogeneous architecture, which characterizes NGWN. Consequently, there is need to develop JCAC algorithms for heterogeneous wireless networks. The thesis proposes three JCAC schemes for improving QoS and radio resource utilization, which are of primary concerns, in heterogeneous wireless networks. The first scheme combines adaptive bandwidth management and joint call admission control. The objectives of the first scheme are to enhance average system utilization, guarantee QoS requirements of all accepted calls, and reduce new call blocking probability and handoff call dropping probability in heterogeneous wireless networks. The scheme consists of three components namely: joint call admission controller, bandwidth reservation unit, and bandwidth adaptation unit. Using Markov decision process, an analytical model is developed to evaluate the performance of the proposed scheme considering three performance metrics, which are new call blocking probability, handoff call dropping probability, and system utilization. Numerical results show that the proposed scheme improves system utilization and reduces both new call blocking probability and handoff call dropping probability. The second proposed JCAC scheme minimizes call blocking probability by determining the optimal call allocation policy among the available RATs. The scheme measures the arrival rates of different classes of calls into the heterogeneous wireless network. Using linear programming technique, the JCAC scheme determines the call allocation policy that minimizes call-blocking probability in the heterogeneous network. Numerical results show that the proposed scheme reduces call-blocking probability in the heterogeneous wireless network. 2014-07-31T10:57:57Z 2014-07-31T10:57:57Z 2008 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/5225 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Falowo, Olabisi Emmanuel Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| thesis_degree_str | Doctoral |
| title | Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| title_full | Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| title_fullStr | Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| title_full_unstemmed | Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| title_short | Efficient joint call admission control and bandwidth management schemes for QoS provisioning in heterogeneous wireless networks |
| title_sort | efficient joint call admission control and bandwidth management schemes for qos provisioning in heterogeneous wireless networks |
| topic | Electrical Engineering |
| url | http://hdl.handle.net/11427/5225 |
| work_keys_str_mv | AT falowoolabisiemmanuel efficientjointcalladmissioncontrolandbandwidthmanagementschemesforqosprovisioninginheterogeneouswirelessnetworks |