Probability Characteristic Analysis and Computation Algorithm of One ONU Upstream in WDM-TDMA PON

Nowadays, the telecommunication industry undergoes fundamental changes, associated with transition from voice to data-link systems. It‘s due to telecommunication networkrevolution, rapid growth of user count, increasing number of provide service and quality of service. Access network evaluation is being conducted in both directions, such as high bitrate access development for providing high quality of service and decrease length of cooper wiring in local line networks. Data traffic dominates in the networks and requires the creation of networks with high bandwidth based on packet switching. Therefore, it‘s paid special attention to the networks, which are based on optical and optoelectronic components. Passive optical network is an all optical network based on passive optical components only, which exclude the conversion of electrical signal into optical form and vice verso. Traffic transmission in the networks may be implemented using time division multiple access (TDMA) and wavelength division multiplexing (WDM) technologies. In the present paper, we propose a fragment of the multiservice passive optical network with upstream traffic carrying considering the functioning process of optical network units (ONU) and the principle of wavelength dynamic distribution. These results are used in the blocking probability analysis of the model.

Passive Optical Network (PON), Optical Line Terminal (OLT), Optical Network Unit (ONU), upstream, Wavelength Division Multiplexing (WDM), TimeDivision Multiple Access (TDMA), blocking probability