Analysis of a hybrid Fixed-Elastic DBA with guaranteed fronthaul delay in XG(s)-PONs

Eugui, David; Hernández, José Alberto

doi:10.1016/j.comnet.2019.106907

Cited by 6 publications

(1 citation statement)

References 23 publications

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“…In [14], the authors improve the gGIANT and RR DBAs by redistributing unused bandwidth of lightly-loaded transmission containers (T-CONTs) equally to heavily-loaded T-CONTs, resulting in sub-300 µs upstream delays. The authors in [15] demonstrate sub-250 µs delay values for eCPRI functional split fronthaul traffic using the fixed-elastic DBA (FEDBA) algorithm, which exploits both the fixed and elastic bandwidth reservations in a TDM-PON. In order to provide low latency bandwidth assignment in a TDM-PON based fronthaul, the concept of coordinating scheduling between the 5G mobile scheduler and the PON OLT was proposed in [8] and has been recognized by the ITU-T as a DBA method known as the cooperative DBA (CO-DBA) [16].…”

Section: Introductionmentioning

confidence: 99%

Performance of PON Dynamic Bandwidth Allocation Algorithm for Meeting xHaul Transport Requirements

Edeagu

Butt

Idrus

et al. 2021

2021 International Conference on Optical Network Design and Modeling (ONDM)

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Passive optical networks (PONs) use dynamic bandwidth allocation (DBA) algorithms to assign upstream bandwidth for different types of traffic to transmission containers (T-CONTs) used by optical network units (ONUs). In this paper, we show that the performance of a PON DBA algorithm that incorporates a colorless grant can ensure that the average upstream delay and delay distribution of T-CONT frames fall within the latency requirements for different traffic types in an xHaul transport network. We evaluate the performance of two deployment scenarios for a 10-Gigabitcapable PON (XGS-PON) system using the OMNeT++ network simulator. The simulation results show that, when the delay distribution of frames is analyzed, more than 99% of fronthaul traffic at 80% load in both scenarios are below the 250 µs latency requirement. Overall, the results indicate that the latency requirements of fronthaul traffic can be met by overallocating bandwidth to it relative to other types of traffic in the network.

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Section: Introductionmentioning

confidence: 99%