Habbal, Adib M. Monzer and Goudar, Swetha Indudhar and Hassan, Suhaidi (2017) Context-aware Radio Access Technology Selection Approach in 5G Ultra Dense Networks. IEEE Access, 5. 6636 -6648. ISSN 2169-3536

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Abstract

Ultra dense network (UDN) is the extreme densification of heterogeneous radio access technologies (RATs) that are deployed closely in a coordinated or uncoordinated manner.The densification of RATs forms an overlapping zone of signal coverage, leading user equipment (UE) to frequent signal handovers among the available RATs. Consequently, this degrades the overall system performance.The traditional approach of RAT selection is network-centric and the decision is primarily focused on the signal aspect.However, the next generation of digital wave is a paradigm shift to being user-centric.In this paper, a context-aware multi-attribute RAT (CMRAT) selection approach is proposed to eliminate unnecessary handover of UE among RATs and determine the best RAT as the next point of attachment among the available ones in the UDN. CMRAT integrates the context-aware concept with multi-attribute decision making (MADM) theory in RAT selection.CMRAT is formed with two mechanisms, including, first, a context-aware analytical hierarchy process mechanism to prioritize the criteria for obtaining the weight.Then, a context-aware technique for order preference by similarity to an ideal solution mechanism is employed to choose the best RAT amongst the available RATs.The proposed CMRAT mechanism was implemented and validated using MATLAB.The obtained simulation findings demonstrate that the proposed CMRAT approach outperforms classic MADM methods, namely TOPSIS, SAW, and GRA with respect to the number of handovers and ranking abnormality metrics.Hence, this paper paves the way to choose RAT based on context information comprising network and user preference criteria information.

Item Type:	Article
Additional Information:	INSPEC Accession Number: 16870681
Uncontrolled Keywords:	Context awareness, multi-attribute decision making, heterogeneous networks, 5G wireless technologies.
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	School of Computing
Depositing User:	Mrs. Norazmilah Yaakub
Date Deposited:	25 Jun 2018 01:06
Last Modified:	25 Jun 2018 01:06
URI:	https://repo.uum.edu.my/id/eprint/24279

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