Due to the rapid growth of mobile data traffic, more and more basestations and access points (APs) have been densely deployed\nto provide users with ubiquitous network access, which make current wireless network a complex heterogeneous network\n(HetNet). However, traditional wireless networks are designed with network-centric approaches where different networks have\ndifferent quality of service (QoS) strategies and cannot easily cooperate with each other to serve network users. Massive network\ninfrastructures could not assure users perceived network and service quality, which is an indisputable fact. To address this issue,\nwe design a new framework for heterogeneous wireless networks with the principle of user-centricity, refactoring the network\nfrom users� perspective to suffice their requirements and preferences. Different from network-centric approaches, the proposed\nframework takes advantage of Software DefinedNetworking (SDN) and virtualization technology, whichwill bring better perceived\nservices quality for wireless network users. In the proposed user-centric framework, control plane and data plane are decoupled\nto manage the HetNets in a flexible and coadjutant way, and resource virtualization technology is introduced to abstract physical\nresources of HetNets into unified virtualized resources. Hence, ubiquitous and undifferentiated network connectivity and QoE\n(quality of experience) driven fine-grained resource management could be achieved for wireless network users.
Loading....