An efficient content delivery framework for SDN based LTE network

As the use of smart devices, such as smart phone, smart pad, etc, increases, the bandwidth for downloading a content also increases in the network. Thusly, the widespread use of Long Term Evolution (LTE) devices make further research necessary into the fields related to managing network and controlling content delivery efficiently in the mobile environment. In this paper, we proposed the framework based Software Defined Networking (SDN) to support content delivery, network management and network control in LTE. We attach functions of Forwarding Engine and SDN switch into network entities such as evolved Node B (eNB), Service-Gateway (S-GW) and Packet data Gateway (P-GW) to provide efficient content delivery and network management. Then we attach a function of SDN controller into Mobility Management Entity (MME). Via our proposed framework, it is also possible to support a detour path in the middle of GTP tunnel. Via simulation result, we prove our proposed scheme can reduce total content delivery time.