ABSTRACT
In recent years, with the fast development of information and communications technology (ICT), mobile access through smart phones and iPads has been increasing highly. The Cisco report of 2015 predicts that the worldwide mobile traffic will reach 24.3 EB by the year 2019 [1]. Cloud radio access network (C-RAN) based small cell architecture has attracted much attention due to its availability of sustaining a higher traffic volume [2]. Researchers believed that this architecture can play a key role in future 5G mobile networks. Wireless network virtualization [3], with the advantage of
enabling abstraction and sharing of infrastructure and radio spectrum resources, reducing capital expenditure (CAPEX) and operational expenditure (OPEX) of wireless (radio) access networks as well as core networks, can be applied to enhance the C-RAN architecture and is becoming a promising research direction [4].
