SDN-Based Broadband Network for Cloud Services

摘要

Over-the-top services and cloud services have created great challenges for telecom operators.To better meet the requirements ofcloud services,we propose a decoupled network architecture.Software-defined networking/network function virtualization(SDN/NFV)will be vital in the construction of cloud-oriented broadband infrastructure,especially within data centers and for intercon-nection between data centers.We also propose introducing SDN/NFV in the broadband access network in order to realize a virtu-alized residential gateway(VRG).We discuss the deployment modes of VRG.