USER-CENTRIC BASED CLUSTERING SCHEME AND RESOURCE ALLOCATION FOR INTER-CELL INTERFERENCE MITIGATION IN 5G HETEROGENEOUS NETWORKS

Obinna S. Oguejiofor, Chibueze P. Obioma, Godson Nnaeto Okechukwu

Abstract


The fifth-generation (5G) mobile communication network is believed to outperform its predecessors in terms of improved: spectral efficiency, throughput, energy efficiency, quality of experience, etc. However, if these gains are to be realized, an inter-cell interference management scheme must be designed to tackle the effect of inter-cell interference which is prevalent in systems using frequency re-use one deployment. In this work, we first design a user-centric based clustering scheme that will help identify the base stations that are providing strong inter-cell interference links to this user, afterward, resource allocation scheme is devised by the user’s base station and all the other base stations involved in the clustering to mitigate the inter-cell interference as well as improve the aggregate spectral efficiency of the system. Results obtained show that the aggregate spectral efficiency of the system is improved and the inter-cell interference mitigated when the devised clustering scheme and coordinated beamforming vectors are utilized in the system.

 

KEYWORDS  Clustering, Inter-cell Interference, Resource allocation, User-Centric, 5G.


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References


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