Dissertation: Security-Centric Analysis and Performance Investigation of IEE 802.16 WiMAX

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WiMAX is a wireless access technology which offers high speed broadband connections and provides a wider coverage area. It has inexpensive equipment’s and more importantly it brings about an acceptable QoS. Moreover its ease of deployment further nominates it among other wireless access networks. Nowadays, WiMAX is considered as one of the most common broadband technologies mainly deployed in developing countries.

When it comes to broadband wireless access, specifically from an end-user’s perspective, security is counted as one of the chief factor’s that basically affects the performance of the WiMAX network and its lack or weakness endangers sensitive information’s by leading to unauthorized access. WiMAX, like other technologies does have many flaws, security breaches and vulnerabilities. The preservation of the security within the WiMAX framework in different scenarios and its protection under numerous attacks are the main problems. In addition to this some measures can be taken to detect and mitigate the threats in early stages. Therefore this technology can become even more widespread if its security would be warrantied and meticulous actions would be taken care of.

In order to address the security concerns and pave the way for a better understanding of the means of detection, mitigation and even fighting back, Hossein Ahmadzadegan’s dissertation is aimed to employ a security-centric research approach to the existing problems. The key results obtained in this dissertation are targeting the security fundamentals, explaining and providing two models for the classification of threats.

– One is in the case of attacks and threats when it comes to WiMAX by taking a hybrid approach with the yardsticks of probability of happening and the impact on the system. The other carried-out classification is in the scenario when VoIP services are offered by WiMAX. Thus the security threats together with the attacks posed at the system have been investigated in a WiMAX specific manner, Ahmadzadegan tells.

The dissertation further provides a comparative analysis and lists the security basics of WiMAX, WiFi and LTE. In addition to this it offers some performance investigation cases of WiMAX in specific scenarios like when the security and number of simultaneous users affects the performance of the WiMAX network. This performance devolution has been described by the Kiyotaki-Moore model. Moreover, as a countermeasure to the threats, an alternative power efficient WiMAX-based intrusion detection system has been proposed and especially DoS attack is scrutinized to observe how the IDS works on the packets.

Public defence

The public examination of M.Sc. Hossein Ahmadzadegan’s doctoral dissertation  ”Security-Centric Analysis and Performance Investigation of IEEE 802.16 WiMAX”  will be on Thursday 4 June at 12 o´clock in auditorium Nissi (Tritonia). Postdoctoral researcher,  D.Sc. (Tech.) Ali Hazmi (Tampere University of Technology) will act as opponent and Professor Mohammed Elmusrati as a custos.

Orders and pdf

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