RESOURCE ORCHESTRATION IN 5G TECHNOLOGIES
Authors: Ajit Kumar Singh, Prof G. P. Gadkar
Affiliation: Department of Computer Science Patna Women's College, Bihar, India, Department of Physics College of Commerce, Arts & Science Patliputra University, Bihar, India
Keywords: 5G, HetNets, 5G Energy Efficiency, Resource Allocation, Radio Access Network
ABSTRACT. Heterogeneous architecture is an underlining feature of 5G, however deployment and management of HetNets in 5G scenarios is yet to be explored. Given the need to satisfy overwhelming capacity demands in 5G, mm-wave spectrum (3-300 GHz) is expected to offer a very compelling long term solution by providing additional spectrum to 5G networks. Hence, the challenge is the integration of mm-wave in heterogeneous and dense networks as well as the backward compatibility and integration with legacy 4G/3G networks. Furthermore, Cloud radio access networks (C-RAN) contribution to 5G is considered as a cost effective and energy efficient solution for dense 5G deployment. From an energy point of view, cost and energy consumption are major considerations for 5G. C-RAN and energy efficiency techniques could help in performance improvements. Although HetNets were introduced in 4G networks, their complexity has increased in 5G networks. In this paper, we will try to build a clear image of HetNets in 5G cellular networks. We consider different technologies with a special focus on mm-wave networks given its important role in 5G networks. We then address the available standards in HetNets that allow interworking and multihoming between different radio access technologies. Afterwards, we consider the virtualization of 5G HetNets and its benefits. Different resource allocation strategies in the literature are also presented for single-resource as well as for multi-resources. Finally, we give an overview of existing works addressing energy efficiency strategies in 5G networks.
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