Spectrum Reconstruction Algorithm based on Resource Partition Allocation in Elastic Optical Networks

Efficient Spectrum Allocation with Survivability Technique in Elastic Optical Networks

In recent years, traffic requirement with variable bit rates and Quality of Service due to online High Definition video streaming, downloading movies and transferring of files are being satisfied with Elastic Optical Network (EON). Most efficient spectrum utilization is required to satisfy the demand with minimum blocking probability. The network is unstable and a small failure can lead to trem...

A Multi Objective Fibonacci Search Based Algorithm for Resource Allocation in PERT Networks

The problem we investigate deals with the optimal assignment of resources to the activities of a stochastic project network. We seek to minimize the expected cost of the project include sum of resource utilization costs and lateness costs. We assume that the work content required by the activities follows an exponential distribution. The decision variables of the model are the allocated resourc...

Bicriteria Resource Allocation Problem in Pert Networks

We develop a bicriteria model for the resource allocation problem in PERT networks, in which the total direct costs of the project as the first objective, and the mean of project completion time as the second objective are minimized. The activity durations are assumed to be independent random variables with either exponential or Erlang distributions, in which the mean of each activity duration ...

Adaptive Elastic Spectrum Allocation Based on Traffic Fluctuation Estimate under Time-Varying Traffic in Flexible OFDM-Based Optical Networks

Spectrum Defragmentation in Elastic Optical Networks

Elastic optical networks (EONs) provide fine bandwidth allocation granularity and enable scalable network management. In this paper, we review the strategies to alleviate spectrum fragmentation from both the preemptive and proactive perspectives. As for preemptive defragmentation, we investigate the characteristics of bandwidth fragmentation in EONs, and then discuss a fragmentation-aware routi...