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This paper outlines some promising results recently obtained in a field trial led by Telefónica and ADVA Optical Networking. The technology tested enables coordinated orchestrations among IP and transport management systems in multi-vendor settings.
The impact of the frequency grid on the CAPEX required to deploy a multi-layer IP/MPLS-over-EON is analyzed. Results showing significant savings at the electronic layer motivate the introduction of narrower grids with enhanced BV-WSS.
This work presents a study of RTP multiplexing schemes, which are compared with the normal use of RTP, in terms of ITU R-factor quality estimator. The bandwidth saving of the different schemes is studied, and some tests with VoIP traffic are carried out in order to compare R-factor using three different router buffer policies. Network delays are added using an adequate statistical distribution. The...
TCRTP is a multiplexing scheme for RTP, defined by IETF, which reduces the overhead of real-time flows. This work presents a preliminary study of how the number of multiplexed flows in TCRTP can affect the Quality of Service (QoS) of VoIP in terms of R-factor. Two different buffer policies are considered. The conclusion is that multiplexing all the calls in a single TCRTP flow is not always the best...
This paper proposes a new Metro Network Architecture based on two key technological pillars: the subwavelength optical switching technologies in the Data Plane (i.e. optical bursts and packets), and an enhanced GMPLS architecture in the Control Plane to extend network control to the subwavelengths, and ease the interworking of network and IT resources. The proposed architecture promises greater cost...
IST project NOBEL2 results on resilience strategies for next-generation optical transport networks are presented, paving the way towards cost-effective, scalable and easy-to-maintain multi-service network architectures.
IP networks and multimedia real-time applications running on them have experienced an amazing development, but require plenty of network resources for a correct performance. The evaluation of quality of service in Internet accesses for multimedia applications (EQoSIM) system provides an easy way of measuring network performance. Its capacity estimation module needs a special processing to avoid calculation...
This paper presents the architecture of a telerobotic system for minimally invasive surgery. The goal is to offer a tool able of making possible different schemes of tele-collaboration, and using standard TCP/IP communication networks to provide a wider range of possible remote locations. Its design comprises a several modules, including a manipulator specially conceived for laparoscopic surgery
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