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        Efficient T-CONT-agnostic Bandwidth and Wavelength Allocation for NG-PON2

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        jocn_11_7_383.pdf (PDF, 553Kb)
        Author
        Kourtessis, Pandelis
        Lim, Wansu
        Merayo, Noemi
        Yang, Yeon-Mo
        Senior, John
        Attention
        2299/21423
        Abstract
        Dynamic bandwidth and wavelength allocation are used to demonstrate high quality of service (QoS) in time wavelength-division multiplexed–passive optical networks (TWDM-PONs). Both bandwidth and wavelength assignment are performed on the basis of transmission containers (T-CONTs) and therefore by means of upstream service priority traffic flows. Our medium access control (MAC) protocol therefore ensures consistency in processing alike classes of service across all optical network units (ONUs) in agreement with their QoS figures. For evaluation of the MAC protocol performance, a simulator has been implemented in OPNET featuring a 40 km, 40 Gbps TWDM-PON with four stacked wavelengths at 10 Gbps each and 256 ONUs. Simulation results have confirmed the efficiency of allocating bandwidth to each wavelength and the significant increase of network traffic flow due to adaptive polling from 9.04 to 9.74 Gbps. The benefit of T-CONT-centric allocation has also been measured with respect to packet delay and queue occupancy, achieving low packet delay across all T-CONTs. Therefore, improved NG-PON2 performance and greater efficiency are obtained in this first demonstration of T-CONTs allocated to both wavelength and time.
        Publication date
        2019-07-01
        Published in
        Journal of Optical Communications and Networking
        Published version
        https://doi.org/10.1364/JOCN.11.000383
        Other links
        http://hdl.handle.net/2299/21423
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