A Probability Based Dynamic Bandwidth Allocation Algorithm in Optical Networks

Provided by: Creative Commons
Topic: Networking
Format: PDF
Bandwidth allocation is very critical issue in the passive optical networks. An efficient bandwidth allocation algorithm can significantly improve the network performance by assuring the network availability to all the ONU's (Optical Network Units) in the network. In this paper, the authors proposed an efficient PDF (Probability Density Function) based DBA (Dynamic Bandwidth Allocation) algorithm which uses the last recent polling table for the current allocation of the bandwidth among the ONU's dynamically. This scheme early allocates bandwidth the bandwidth to the ONU's requesting bandwidth lower than minimum guaranteed bandwidth and ONU's demanding bandwidth greater than minimum guaranteed whose PDF in the last polling table is greater than threshold value.

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