Protection strategies for Next Generation Passive Optical Networks -2
2014 (English)In: 2014 International Conference on Optical Network Design and Modeling, 2014, 13-18 p.Conference paper (Refereed)
Next Generation Passive Optical Networks-2 (NG-PON2) are being considered to upgrade the current PON technology to meet the ever increasing bandwidth requirements of the end users while optimizing the network operators’ investment. Reliability performance of NG-PON2 is very important due to the extended reach and, consequently, large number of served customers per PON segment. On the other hand, the use of more complex and hence more failure prone components than in the current PON systems may degrade reliability performance of the network. Thus designing reliable NG-PON2 architectures is of a paramount importance. Moreover, for appropriately evaluating network reliability performance, new models are required. For example, the commonly used reliability parameter, i.e., connection availability, defined as the percentage of time for which a connection remains operable, doesn’t reflect the network wide reliability performance. The network operators are often more concerned about a single failure affecting a large number of customers than many uncorrelated failures disconnecting fewer customers while leading to the same average failure time. With this view, we introduce a new parameter for reliability performance evaluation, referred to as the failure impact. In this paper, we propose several reliable architectures for two important NG-PON2 candidates: wavelength division multiplexed (WDM) PON and time and wavelength division multiplexed (TWDM) PON. Furthermore, we evaluate protection coverage, availability, failure impact and cost of the proposed schemes in order to identify the most efficient protection architecture.
Place, publisher, year, edition, pages
2014. 13-18 p.
next generation networks;passive optical networks;telecommunication network reliability;wavelength division multiplexing;NG-PON2 architectures;PON technology;TWDM;bandwidth requirements;failure prone components;network operators investment;next generation passive optical networks -2;protection strategies;reliability parameter;reliability performance;time and wavelength division multiplexed;Availability;Business;Optical network units;Passive optical networks;Wavelength division multiplexing;Availability;Resilience;TWDM-PON;WDM-PON
Communication Systems Telecommunications
IdentifiersURN: urn:nbn:se:kth:diva-157409ScopusID: 2-s2.0-84905482290OAI: oai:DiVA.org:kth-157409DiVA: diva2:769892
2014 International Conference on Optical Network Design and Modeling, Stockholm
QC 201502102014-12-092014-12-092015-02-10Bibliographically approved