Abstract
Sophisticated dynamic bandwidth allocation (DBA) algorithms can dramatically improve or worsen throughput and delay in whole networks. It is very important to choose the right DBA algorithm. Our work tests static assignment and three DBA algorithms, namely GigaPON Access Network DBA, Hybrid Reporting Allocation, and modified Max–Min Fair. All tests were made on our simulator of ten-gigabit passive optical network DBA specially developed for testing DBA algorithms. The tests verify delay of each optical network unit and amount of waste with bandwidth. This paper describes how the used DBA algorithms work and the processes involved in DBA algorithms.
Highlights
Passive optical network (PON) provides the advantage of having no active elements in its optical path [1,2]
The network consists of a central unit called optical line terminal (OLT) that is owned by the internet service provider (ISP), and other units connected to it called optical network unit (ONU) that are located with customers
The future of passive optical networks is in the multi-OLTs platform and it will be necessary to deal with a novel dynamic bandwidth allocation (DBA) algorithm for the downstream channel
Summary
Passive optical network (PON) provides the advantage of having no active elements in its optical path [1,2]. The only other elements used in an optical network, called optical distribution network (ODN), are the so-called splitters, which are passive optical hubs that make it possible to connect several ONUs to a single optical fiber. Such a network is referred to as point-to-multipoint (P2MP) network; see Figure 1 [3,4]. Passive optical networks (PONs) cannot work without any sophisticated dynamic bandwidth allocation (DBA) algorithm. In the simulator we implemented the static assignment, and three DBA algorithms, namely hybrid reporting allocation.
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