Resource allocation in SDN based 5G cellular networks

The deployment and operation of Fifth Generation (5G) network is expected in 2020. The 5G aim to provide high throughput, reduced latency, increased capacity and a shift from service-orientation to user-orientation in requirements and innovations. The users require an efficient resource allocation and management. The closed infrastructure and ossified services of existing networks lead to complex, inefficient resource allocation and underutilized network resources especially in wireless networks. Different allocation techniques are proposed based on the utility gain of a service provider and user satisfaction. Software Defined Network (SDN) and Network Function Virtualization (NFV) are a hot topic in the wired and wireless network for the network management. SDN based 5G network is another stepping research domain for resource allocation and connectivity in 5G network. In this paper, a survey on state of the art on the 5G integration with the SDN is presented. A comprehensive survey is presented for different integrated architectures of 5G cellular network based on SDN and NFV form part of the paper. Different architectural integration of other wireless technologies such as 3G/4G, LTE, WiMAX etc. are highlighted in term of SDN and network virtualization. Furthermore, the paper focuses on the methods and techniques adopted for resource allocation for SDN based cellular network and elaborate requirements for futuristic 5G networks. It also highlights the role of virtualization and provides an analysis of abstraction for resource allocation in SDN based cellular network. In the end, the potential problems and issues are also comprehended in this article.