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Title: Video traffic : characterization, modelling and transmission
Author: Liew, C. H.
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 2006
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Ubiquitous wireless multimedia communications are becoming a reality. Users will be able to communicate and access information etc. just about anytime, anywhere and will always be connected to the network. Telecommunication operators now consider multimedia services as revenue generators. However, the success of multimedia services in attracting customers also depend on the capability of the network to guarantee Quality of Service (QoS). Hence, the topic of multimedia QoS provisioning constitutes an important research area. The research of multimedia QoS provisioning can be divided into two parts. The first part includes the study of application QoS requirements, traffic characterization, and mathematical modelling of the traffic. A traffic model is important for evaluation of communication system performances by either analytical techniques or software simulations without costly hardware prototypes. The second part includes the design and development of multimedia resource allocation and scheduling algorithms in packet switched mobile networks. Resource allocation ensures that sufficient amounts of resources are allotted to users whereas scheduling ensures that user access to the allotted resources is given on a timely basis. Thus the objectives of this thesis are to characterize and model multimedia traffic as well as to propose efficient resource allocation and scheduling algorithms. In the first part, two new accurate Variable Bit Rate (VBR) video traffic models are presented together with their performance evaluations. Leading on from there, enhancements are added so that the model becomes reconfigurable to encoder parameters. The second part of the thesis deals with multimedia resource allocation and scheduling. A joint channel- and user- aware multiple user resource allocation algorithm for multimedia traffic is studied. Finally, the design of a low complexity scheduling algorithm for delay sensitive multimedia traffic in wireless network is proposed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available