Network convergence and QoS for future multimedia services in the VISION project

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• 作者：Luis Pé ; rez^a  ; [Author Vitae] ; Luis Velasco^b ; ^{lvelasco@ac.upc.edu}  ; [Author Vitae] ; Juan Rodrí ; guez^a  ; [Author Vitae] ; Pedro Capelastegui^c  ; [Author Vitae] ; Guillem Herná ; ndez-Sola^b  ; [Author Vitae] ; Lorena Calavia^d  ; [Author Vitae] ; Antonio Marqué ; s^a  ; [Author Vitae] ; Borja Iribarne^a  ; [Author Vitae] ; Amador Pozo^e  ; [Author Vitae] ; Antoine De Poorter^f  ; [Author Vitae]
• 关键词：Network convergence ; Multimedia services ; Quality of service
• 刊名：Computer Networks
• 出版年：2012
• 期刊代码：28_13891286
• 类别：cp
• 出版时间：16 March, 2012
• 卷：56
• 期：4
• 页码：1183-1199
• 文件大小：2346 K

摘要

The emerging use of real-time 3D-based multimedia applications imposes strict quality of service (QoS) requirements on both access and core networks. These requirements and their impact to provide end-to-end 3D videoconferencing services have been studied within the Spanish-funded VISION project, where different scenarios were implemented showing an agile stereoscopic video call that might be offered to the general public in the near future. In view of the requirements, we designed an integrated access and core converged network architecture which provides the requested QoS to end-to-end IP sessions. Novel functional blocks are proposed to control core optical networks, the functionality of the standard ones is redefined, and the signaling improved to better meet the requirements of future multimedia services. An experimental test-bed to assess the feasibility of the solution was also deployed. In such test-bed, set-up and release of end-to-end sessions meeting specific QoS requirements are shown and the impact of QoS degradation in terms of the user perceived quality degradation is quantified. In addition, scalability results show that the proposed signaling architecture is able to cope with large number of requests introducing almost negligible delay.