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IJSTR >> Volume 9 - Issue 9, September 2020 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Fuzzy Based System For Assessing And Enhancing Qos For Wireless Networks

[Full Text]



Saleh Saraireh, Mohammad Saraireh



Quality of Service (QoS), Fuzzy logic, Wireless Networks, Contention Window.



The problem of selecting an appropriate set of MAC protocol transmission parameters and QoS mechanism to provide predictable QoS using the IEEE 802.11 DCF scheme is an important issue in ad-hoc networks. Based on a simulated network using Network Simulator (NS) this paper aims to : (i) develop a Fuzzy Inference System (FIS) to intelligently assess the Quality of Service (QoS) for video and audio applications, (ii) develop a second FIS mechanism to adjust the minimum size of Contention Window ( CWmin ) in such a way to significantly improve QoS for the selected applications, (iii) Examine the implication of the developed approaches in real system. The results revealed that the developed FIS system has the capability of assessing the QoS wireless network for for multimedia transmission, and also has the ability for adjusting the wireless network parameters specially the minimum CWmin size. The results also indicated that a significant improvements in the network QoS for the whole network has been obtained. The implication of the proposed schemes in real networks has been examined. By using a systematic sampling method the results revealed that there was no significance statistical discrepancy between the actual data and the sampled version.



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