Abstract
We present an optimization platform for Fiber-to-the-Home network design. The platform is capable of minimizing the capital expenditures (CAPEX) of network deployment by optimizing locations of optical equipment, signal splitters and cable cabinets, optimizing cable routes and types of cables as well as the number and types of optical cards and splitters. We present the architecture of the platform, the design process it implements, and the algorithms it deploys. The platform is used to indicate the parts of the design process that require complex optimization with dedicated algorithms and those that can be left to appropriately crafted engineering rules. We indicate that while keeping the computation time acceptable, much of the CAPEX savings can be obtained when locations of optical equipment are thoroughly optimized, cable routes are determined with plain engineering rules, and finally, signal splitting patterns are optimized carefully to lower the fiber count and thus the cost of cables.
Highlights
The ever increasing need for broadband Internet access leads fixed network providers to consider replacing their legacyThe terminology used in this research is as follows
Having line cards selected and splitters in Access Point (AP) located, we start to compute splitters to be allocated in Distribution Point (DP) using a following rule: If a splitter is located in a DP, all its outputs have to be used, and all served clients connected to it have to be served efficiently, i.e., the signal they receive should be split in such a way that the number of clients served by a single fiber connected to a card in a Central Office (CO) is maximized
We presented an optimization platform for a FTTH network design capable of minimizing the capital expenditures (CAPEX) of network deployment
Summary
A considered network is called Optical Access Network (OAN), and it consists of a number of Optical Line Terminals (OLTs) feeding with optical signals a set of Optical Network Units (ONUs). The P2M architecture is used for ONUs with just a single optical customer—such ONUs are called Optical Network Terminals (ONTs). The FTTH standardization is currently a predominant solution for deployment of P2M OANs. The FTTH standardization is currently a predominant solution for deployment of P2M OANs It exploits the PON technique with up to 128 of ONTs sharing a bidirectional optical signal to an OLT using an enhanced time division multiplexing paradigm. The sharing is realized using optical splitters and is scheduled by the OLT, which delimits time slots in the optical signal and assigns these time slots to particular ONTs. Generally, PON OANs exploit different wavelengths for uplink and downlink traffic and can achieve.
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