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Quality-Oriented Mobility Management for Multimedia Content Delivery to Mobile Users

Ciubotaru Petrescu, Bogdan (2011) Quality-Oriented Mobility Management for Multimedia Content Delivery to Mobile Users. PhD thesis, Dublin City University.

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Abstract

The heterogeneous wireless networking environment determined by the latest developments in wireless access technologies promises a high level of communication resources for mobile computational devices. Although the communication resources provided, especially referring to bandwidth, enable multimedia streaming to mobile users, maintaining a high user perceived quality is still a challenging task. The main factors which affect quality in multimedia streaming over wireless networks are mainly the error-prone nature of the wireless channels and the user mobility. These factors determine a high level of dynamics of wireless communication resources, namely variations in throughput and packet loss as well as network availability and delays in delivering the data packets. Under these conditions maintaining a high level of quality, as perceived by the user, requires a quality oriented mobility management scheme. Consequently we propose the Smooth Adaptive Soft-Handover Algorithm, a novel quality oriented handover management scheme which unlike other similar solutions, smoothly transfer the data traffic from one network to another using multiple simultaneous connections. To estimate the capacity of each connection the novel Quality of Multimedia Streaming (QMS) metric is proposed. The QMS metric aims at offering maximum flexibility and efficiency allowing the applications to fine tune the behavior of the handover algorithm. The current simulation-based performance evaluation clearly shows the better performance of the proposed Smooth Adaptive Soft-Handover Algorithm as compared with other handover solutions. The evaluation was performed in various scenarios including multiple mobile hosts performing handover simultaneously, wireless networks with variable overlapping areas, and various network congestion levels.

Item Type:Thesis (PhD)
Date of Award:14 January 2011
Refereed:No
Supervisor(s):Muntean, Gabriel-Miro
Uncontrolled Keywords:Heterogeneous Wireless Networks; Handover; Quality of Service
Subjects:Engineering > Telecommunication
Computer Science > Multimedia systems
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
Funders:IRCSET and Microsoft Research
ID Code:16063
Deposited On:06 Apr 2011 16:58 by Gabriel-Miro Muntean. Last Modified 12 Apr 2011 11:43

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