1. ON-OFF traffic models for a hybrid TDM-WDM PON with dynamic wavelength allocation
- Author
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Ioannis D. Moscholios, Michael D. Logothetis, V. Stylianakis, and John S. Vardakas
- Subjects
Engineering ,Access network ,Transmission (telecommunications) ,Time-division multiplexing ,business.industry ,Wavelength-division multiplexing ,Broadband ,Electronic engineering ,Optical performance monitoring ,business ,Passive optical network ,Call blocking ,Computer network - Abstract
Future access networks will have to meet the ever increasing demand for capacity. Optical access systems are now considered as a viable alternative solution to the xDSL technologies for delivering future integrated broadband services. Nowadays, passive optical networks are the most promising and cost-effective class of fiber access systems. In this paper we develop teletraffic loss models for calculating connection failure probabilities (due to unavailability of a wavelength) and call blocking probabilities (due to the restricted bandwidth capacity of a wavelength) in hybrid TDM-WDM passive optical networks with dynamic wavelength allocation. The optical access network accommodates bursty services of ON-OFF (transmission or no transmission) type. The proposed models are derived from one-dimensional Markov chains which describe the wavelengths occupancy in the optical access network. The accuracy of the proposed models is validated by simulation and was found to be quite satisfactory.
- Published
- 2010