Abstract
Elastic Optical Networks (EONs) were introduced to eliminate the challenges of Wavelength Division Multiplexing (WDM) networks. EONs can improve resource efficiency compared to WDM networks. The issue of resource allocation in EONs is a major challenge for the optimal use of maximum network capacity for each communication demand. On the other hand, multicasting is defined as the transfer of data from one source to multiple destinations and it is one of the most effective methods based on cost and efficiency in order to provide flow in computer networks. In this article, we present a novel Multicast Two-part Two-path Two-direction Allocation (MT3A) scheme in order to routing, spectrum and modulation-level assignment for dynamic multicast traffic in EONs. With this scheme, each sub-request related to a multicast request is divided into two parts considering the property of Sliceable Bandwidth Variable Transponders (SBVTs) and is set up in two different directions in two different light-paths. By using the MT3A scheme compared to comparative schemes, with increasing the data rate, Bandwidth Blocking Probability (BBP) is reduced, which is very important due to increasing demand for contents with high data rate.
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