Abstract
Cooperative dynamic bandwidth allocation (CO-DBA) enables time division multiplexed passive optical network (TDM-PON) to become a possible solution for mobile fronthaul. Meanwhile, status-report DBA (SR-DBA) still retains its advantage on bandwidth efficiency for conventional PON services. The collaboration of CO- and SR-DBA is an enabling approach for fixed-mobile convergence into a single PON infrastructure. However, a resource allocation conflict between CO- and SR-DBA is to arise when using an emerging 5G new radio interface based on the mini-slot. This conflict will cause a large delay that can not meet the time-sensitive fronthaul requirement. In this study, we consider a time and wavelength multiplexed PON (TWDM-PON) for fixed and mobile services accommodation because of its capacity and flexibility. A novel DWBA scheme is proposed by means of wavelength and bandwidth preemption (WBP) mechanism. The basic rule of WBP is that a time-sensitive traffic can preempt the wavelength and bandwidth allocated to the time-tolerent traffic when a conflict happens. We demonstrate that the proposed DWBA can significantly reduce the latency caused by the conflict, when compared to the existing integrated CO- and SR-DWBA approach with 5G NR mini-slot.
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription