Improving Quality of Service in Cloud Based Networks with Software Defined Networks

With the increase of network in cloud the complexity and flexibility of network control and management becomes a nontrivial problem. Both Software Defined Network (SDN) and Autonomic Network technologies are sophisticated technologies for the network control and management. In AQSDN, the various QoS features can be configured autonomically in an OpenFlow switch through extending the OpenFlow and OF-Config protocols. Based on AQSDN, a novel packet context-aware QoS model (PCaQoS) is also introduced for improving the cloud network QoS. PCaQoS takes packet context into account when packet is marked and managed into forwarding queues. The implementation of a video applications prototype which evaluates the self-configuration feature of the AQSDN and the enhancement ability of the PCaQoS is Presented in order to validate this design.