Pub Date : 2008-09-16DOI: 10.1504/IJIPT.2008.023772
I. Martínez-Yelmo, A. Bikfalvi, Carmen Guerrero, R. C. Rumín, A. Mauthe
The provision of innovating multimedia services is a high priority for service providers. Due to the the high traffic volume characteristics of multimedia content, decentralised services are a desired solution for multimedia scenarios. Based on the ongoing work of the IETF P2PSIP WG this paper defines a simple way to interconnect different domains using on peer-to-peer technology. The objective is to provide connectivity between users of different domains and allow decentralised multimedia services to be placed where they can be provided most effectively. Furthermore, the routing performance and routing state is analysed for the proposed hierarchical DHT overlay architecture.
{"title":"Enabling Global Multimedia Distributed Services Based on Hierarchical DHT Overlay Networks","authors":"I. Martínez-Yelmo, A. Bikfalvi, Carmen Guerrero, R. C. Rumín, A. Mauthe","doi":"10.1504/IJIPT.2008.023772","DOIUrl":"https://doi.org/10.1504/IJIPT.2008.023772","url":null,"abstract":"The provision of innovating multimedia services is a high priority for service providers. Due to the the high traffic volume characteristics of multimedia content, decentralised services are a desired solution for multimedia scenarios. Based on the ongoing work of the IETF P2PSIP WG this paper defines a simple way to interconnect different domains using on peer-to-peer technology. The objective is to provide connectivity between users of different domains and allow decentralised multimedia services to be placed where they can be provided most effectively. Furthermore, the routing performance and routing state is analysed for the proposed hierarchical DHT overlay architecture.","PeriodicalId":247507,"journal":{"name":"2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116652726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
WiMAX is a promising technology for providing broadband wireless access. The WiMAX links are significantly affected by propagation impairments. In the high frequency range of 2-66 GHz links these impairments can lead to signal outage. Using the ITU-R and other existing models we evaluate the effects of individual environmental factors on the signal and thereby calculate the overall degradation caused. From the losses obtained at various frequencies and distances we find the availability of the signal at various BER. These results show that there are improvements needed to overcome the signal outages.
{"title":"Propagation Effects in WiMAX Systems","authors":"S. Enoch, I. Otung","doi":"10.1109/NGMAST.2008.52","DOIUrl":"https://doi.org/10.1109/NGMAST.2008.52","url":null,"abstract":"WiMAX is a promising technology for providing broadband wireless access. The WiMAX links are significantly affected by propagation impairments. In the high frequency range of 2-66 GHz links these impairments can lead to signal outage. Using the ITU-R and other existing models we evaluate the effects of individual environmental factors on the signal and thereby calculate the overall degradation caused. From the losses obtained at various frequencies and distances we find the availability of the signal at various BER. These results show that there are improvements needed to overcome the signal outages.","PeriodicalId":247507,"journal":{"name":"2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies","volume":"21 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116671049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Calic, P. Daras, N. Achilleopoulos, P. Stollenmayer, D. Williams, M. Pelt, T. McGrath, N. Papaoulakis, E. Kalapanidas, A. Shani, J.-Y. Le Moine
Having witnessed a rapid development of the digital media literacy in the modern society due to a multitude of technological advances in the low-cost photography, cinematography and 2D/3D graphic design, there is a proliferation of high quality media content generated, distributed and experienced by the end users. This phenomenon, known as the user centric media (UCM), will play a significant role in forming of rapidly approaching era of the future Internet. The aim of this paper is to present the consolidated opinion of the UCM cluster composed of representatives of ongoing FP6 & FP7 EU funded projects, under the guidance of the networked media systems unit of the information society and media directorate general of the European commission. Our goal is to identify concrete scientific challenges that will probably be the constitutional pillars of the research in the area of future media Internet (FMI), with a particular emphasis on the issues of personalized & creative media, 3D & immersive media, and future Internet communities.
{"title":"User Centric Media of the Future Internet","authors":"J. Calic, P. Daras, N. Achilleopoulos, P. Stollenmayer, D. Williams, M. Pelt, T. McGrath, N. Papaoulakis, E. Kalapanidas, A. Shani, J.-Y. Le Moine","doi":"10.1109/NGMAST.2008.28","DOIUrl":"https://doi.org/10.1109/NGMAST.2008.28","url":null,"abstract":"Having witnessed a rapid development of the digital media literacy in the modern society due to a multitude of technological advances in the low-cost photography, cinematography and 2D/3D graphic design, there is a proliferation of high quality media content generated, distributed and experienced by the end users. This phenomenon, known as the user centric media (UCM), will play a significant role in forming of rapidly approaching era of the future Internet. The aim of this paper is to present the consolidated opinion of the UCM cluster composed of representatives of ongoing FP6 & FP7 EU funded projects, under the guidance of the networked media systems unit of the information society and media directorate general of the European commission. Our goal is to identify concrete scientific challenges that will probably be the constitutional pillars of the research in the area of future media Internet (FMI), with a particular emphasis on the issues of personalized & creative media, 3D & immersive media, and future Internet communities.","PeriodicalId":247507,"journal":{"name":"2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126146835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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