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Evaluation of transparent optical multiplexing techniques in transport networks

Abstract : Traffic in all segments of the transport network has been constantly growing in the past years as a result of increasing number of connected end-user terminals (smartphones, tablets, connected TVs) and the race towards higher definition contents. This growth is expected to continue, and it leads to significant bandwidth utilization. The conventional approach in opaque transport networks consists in aggregating/grooming traffic in the time domain at every node, in order to optimize bandwidth use at the expense of costly traffic grooming electronics and high power consumption. Thus, the new transport networks should support very high bitrate interfaces, dynamic bandwidth provisioning such that they meet customer¿s demands and use the existing fibers. In this context, optical packet-based technologies may be more appropriate than the currently deployed opaque circuit switching, in order to bring the required flexibility in the transport layer. The contribution of this thesis is a part the CELTIC-Plus project SASER-SaveNet. The project is devoted to the evaluation of different optical packet-based technologies and architectures for regional networks. Through this thesis, we address the problem of dimensioning in Time-Domain Wavelength Interleaved Network (TWIN). Furthermore, the cost of the optical transport solutions with sub-wavelength switching granularity is compared. Two scenarios are considered: survivable metro networks and Long Term Evolution (LTE) mobile backhauling, with the focus on TWIN and Packet Optical Add Drop Multiplexer (POADM) technologies. Both technologies apply optical sub-wavelength switching: TWIN on a physical mesh topology, and POADM on a physical ring topology. A single network dimensioning model, supporting protection and multicast traffic, is proposed for the first time for these technologies.
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Submitted on : Friday, January 15, 2016 - 11:27:55 AM
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2015telb0365_Popescu Ion.pdf
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Ion Popescu. Evaluation of transparent optical multiplexing techniques in transport networks. Networking and Internet Architecture [cs.NI]. Télécom Bretagne; Université de Bretagne Occidentale, 2015. English. ⟨tel-01256703⟩



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