The efficacy of handoff strategy based spectrum allocation using TSB-MFO for D2D and CU communications
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The efficacy of handoff strategy based spectrum allocation using TSB-MFO for D2D and CU communications Divya Mohan 1 & Geetha Mary Amalanathan 1 Received: 3 February 2020 / Accepted: 14 May 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Device-to-Device (D2D) based communication plays a major part in improving the 5G network’s system capacity. In pursuance of accomplishing this, effective resource and power allocation algorithms have to be designed for D2D users. As D2D users are considered as secondary users, their interference with cellular users (CUs) should not restrict the communication which is performed based on CU. Most of the existing methodologies performed on bandwidth allocation assume full Channel State Information (CSI) at the base station (BS), which resulted in uncertainty resource allocation. Hence to resolve this, the proposed scheme is developed with an efficient handoff strategy based on bandwidth allocation using Thompson Sampling Bandwidth (TSB) and Magnetic Force Optimization (MFO) for D2D and CU communications along with guaranteed QoS constraint. Here, the available free bandwidth is selected using the TSB technique which in turn is based on overall data rate, level of interference and number of CU users. In this, Magnetic Force optimization (MFO) is utilized for base station selection. This is done based on signal strength variation, coverage area between user and base station, and bandwidth capacity. Thus it results in guaranteed QoS constraint, i.e., parameters like Packet delay; throughput, data rate and reduction in allocated sub-carriers are attained. Finally, the simulation outcomes are performed and the results are estimated in terms of average delay, throughput, node deployment, and data rate. Therefore, the comparative analysis is carried out between the attained outcomes with that of the existing techniques to prove the efficacy of the proposed TSB-MFO technique. Keywords TSB . MFO . Cellular users . Device-to-device (D2D) communication . Quality of service . Node deployment
1 Introduction In recent times, the emergence of Opportunistic spectrum access (OSA) [1] is an efficient alternative for alleviating the issues related to spectrum scarcity and also for enhancing the effectiveness of spectrum. Generally, in OSA the secondary users (SUs) (also stated as unlicensed users) are responsible for the identification of vacant spectrum resources in full by transmitting and sensing the particular band and further it is selected without the primary users (PUs) interference. Achieving the coexistence of the SUs trying to access a similar part of the spectrum that has This article is part of the Topical Collection: Special Issue on P2P Computing for Beyond 5G Network and Internet-of-Everything Guest Editors: Prakasam P, Ajayan John, Shohel Sayeed * Geetha Mary Amalanathan [email protected] Divya Mohan [email protected] 1
School of Computer Science and Engineering , Vellore Institute of Technology , Vellore, Tamil Nadu 632014, India
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