This paper presents a new approach for optical burst switching in order to achieve better performance of cloud computing systems. The model of software defined burst scheduling in core node of OBS (Optical Burst Switching) network was designed based on field programmable gate arrays supervised by main controller. Simulation results prove the advantage of the proposed network infrastructure.
In this paper, a new flexible backhaul design is proposed based on the time-frequency resource grid. The advantage of proposed approach is in the fine granularity bandwidth allocation. Proposed approach allows tunneling of Cloud-RAN modulated radio signals between baseband processing unit and remote radio head within the same resource blocks. In addition, new handover machanism has been introduced to reduce the handover overhead in the backhaul network. The main idea of the proposed handover mechanism is in multicast data transmission to both involved eNodeBs by joint assignment of the resource elements for multiple cells during handover that allows to decrease the amount of backhaul traffic over X2 interface by 20%.
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