Adaptation techniques for ubiquitous Internet multimedia

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dc.contributor.author Margaritidis, M en
dc.contributor.author Polyzos, GC en
dc.date.accessioned 2014-03-01T11:44:28Z
dc.date.available 2014-03-01T11:44:28Z
dc.date.issued 2001 en
dc.identifier.issn 15308669 en
dc.identifier.uri http://hdl.handle.net/123456789/36963
dc.subject Handoffs en
dc.subject Media adaptation en
dc.subject Mobile communications en
dc.subject Proxy filtering en
dc.subject Quality-of-Service en
dc.subject Ubiquitous access en
dc.subject Utility functions en
dc.subject Wireless networks en
dc.title Adaptation techniques for ubiquitous Internet multimedia en
heal.type other en
heal.identifier.primary 10.1002/wcm.10 en
heal.identifier.secondary http://dx.doi.org/10.1002/wcm.10 en
heal.publicationDate 2001 en
heal.abstract We identify the importance of adaptation for the ubiquitous access to Internet multimedia content. The variety of media types combined with the diversity of Internet connection characteristics raises momentous challenges to the achievement of this goal. With adaptation, the characteristics of various media can be adjusted to better match those of the network path and the end device. As a result, adaptive streams enjoy superior robustness and provide substantially better presentation quality than traditional, non-adaptive ones, especially in variable, capacity-limited environments. We examine several important factors that influence the design and optimization of the adaptation architecture. First, the location of the adaptation mechanism on the end-to-end path must be chosen. Second, the adaptation policy, i.e., the agility in adapting to variations in network path performance, must be specified. Third, the adaptation mechanism needs to be aware of the value of the perceptual quality that the different representations of each medium and the necessary resources to sustain it. Finally, we emphasize the role of supporting mechanisms in enhancing the adaptation process, namely, prioritization, admission control and hand-off notifications. Based on the aforementioned criteria, we classify existing research approaches and present some of them as case studies. We also describe current commercial solutions and, finally, we discuss future trends in application adaptation in conjunction with recent developments towards wireless access to the Internet. Copyright © 2001 John Wiley & Sons, Ltd. en
heal.journalName Wireless Communications and Mobile Computing en
dc.identifier.doi 10.1002/wcm.10 en
dc.identifier.volume 1 en
dc.identifier.issue 2 en
dc.identifier.spage 141 en
dc.identifier.epage 163 en

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