Abstract:
TDM-PON technologies are an attractive solution for a flexible and cost-efficient mobile front haul for
C-RAN architecture. This is because these technologies allow for TDM over passive optical networks.
However, because TDM-PONs employ a process known as dynamic bandwidth allocation (DBA) to
control upstream traffic, it might be difficult for these networks to satisfy the stringent delay
requirements that C-RAN imposes on mobile front-haul. On the other hand, ITU TDM-PONs like XG PON and XGS-PON have not even been investigated for their potential use in mobile front-haul,
especially in a virtualized network environment.
Since sharing the PON infrastructure between different network operators and allowing a virtual passive
optical network is necessary to save CapEx and efficiently use available resources. Because of this
virtualization, separate VNOs can establish individualized frame-level allocations across common PON
infrastructure. Granting them the ability to have complete control over the scheduling of their upstream
traffic. At the OLT, which shares the upstream capacity of the PON, we implement the coexistence of
independent and customized DBA algorithms. A variety of DBA algorithms are tested to investigate
the influence the VNOs' choice of DBA has on the quality of the services they provide. Suggesting that
the choice of DBA made by the operator affects the performance of the service, namely in terms of
packet loss and latency which as mentioned above are stringent requirements of C-RAN architecture.
