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Title:
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ASSESSING ELEARNING APPLICATION MULTIMEDIA QUALITY IN A MULTIHOMED ENVIRONMENT |
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Author(s):
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Karena Stannett , Paul Jacob , Enda Fallon , Yuansong Qiao , Austin Hanley |
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ISBN:
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978-972-8924-55-3 |
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Editors:
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Piet Kommers and Pedro Isaías |
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Year:
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2008 |
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Edition:
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Single |
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Keywords:
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SCTP, Multi-homing, multimedia, handover, transport layer, video quality |
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Type:
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Full Paper |
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First Page:
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195 |
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Last Page:
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203 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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Communications networks are evolving towards a scenario where there is a pervasive deployment of end user nodes
capable of accessing multiple underlying networks concurrently. Concurrent access to multiple, often diverse, networks
within a single end-to-end association is known as multi-homing. Through the use of multi-homing end user nodes have
the potential to overcome many of the limitations caused by unreliable or incorrectly dimensioned communications
networks. Such a technology is particularly required when supporting bandwidth intensive eLearning sessions which
employ multi-media streaming technologies. The integrity of multimedia streams can be significantly improved when
utilising a multi-homed transport protocol such as the Stream Control Transmission Protocol (SCTP) which facilitates
path handover in the event of network failure. This paper investigates the effectiveness of SCTP to support multimedia
streaming eLearning applications, such as Centra Symposium, in the situation where an underlying network suffers
catastrophic network failure as a result of, for example, inappropriate network dimensioning. The results presented
indicate that a multimedia stream received by an end user node that experiences a catastrophic network failure during
transmission has comparable quality to a multimedia stream received by an end user node that did not experience network
failure during transmission. |
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