Modeling and analysis of traffic‐aware spectrum handover schemes in cognitive HetNets

Habibzadeh, A.; Moghaddam, Shahriar Shirvani; Razavizadeh, S. Mohammad; Shirvanimoghaddam, Mahyar

doi:10.1002/ett.3199

Cited by 13 publications

(6 citation statements)

References 29 publications

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“…Simulation results demonstrate that the proposed strategy outperforms the conventional RSS−α algorithm. In [40], Habibzadeh et al introduced two trafficaware spectrum handover (SHO) approaches for cognitive HetNets. These approaches are called shared-to-reserved (SR) and reserved-to-shared (RS) and they are based on the channel reservation concept.…”

Section: Related Workmentioning

confidence: 99%

An Adaptive Cell Selection Scheme for 5G Heterogeneous Ultra-Dense Networks

Alablani

Arafah

2021

IEEE Access

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Fifth-generation (5G) cellular networks are a promising technology to meet the rapid growth in wireless traffic. Small cells are critical in fulfilling the requirements of 5G networks. A heterogeneous ultra-dense network (HUDN) is an enabling technology consisting of several types of small cells to enhance the performance of 5G networks effectively. A critical issue of HUDN is the cell selection method because the traditional technique for cell selection is inapplicable in such a network. This study proposes a novel adaptive cell selection (ADA-CS) scheme. It adapts to various characteristics of HUDNs and vehicle movements. It performs six phases to select the best base station with which to be associated. Simulation results show that, with low-and medium-speed vehicles, the ADA-CS scheme outperforms the traditional protocol in terms of the average number of handovers by 42.39%. In addition, it is superior to some relevant recent schemes by up to 36.53%. The adaptation feature of the proposed protocol provides additional improvements regarding the average number of handovers with high-speed vehicles. Therefore, it achieves superiority in terms of the average number of handover failures and unnecessary handovers. In addition, the ADA-CS scheme enhances the average achievable downlink data rates and spectral efficiency per vehicle by 3.98% and 2.79% compared with the traditional and the relevant recent schemes.

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Section: Related Workmentioning

confidence: 99%

An Adaptive Cell Selection Scheme for 5G Heterogeneous Ultra-Dense Networks

Alablani

Arafah

2021

IEEE Access

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“…Exploiting the cognitive radio technology with vertical spectrum sharing mechanism for heterogeneous networks by which fewer priority users in the macro cell region (i.e., secondary users) are handover to the small cell region, and attempting to access the spectrum bands from licensed users (i.e., primary users) in that cell [44].In that case, both primary, as well as secondary-users, can be served by a macro base station. Hence, a spectrum management strategy is essential to manage the spectrum handover operation and mitigate unnecessary handovers and minimize interruptions [45] [46]. The CRbased heterogeneous networks have to gain more attention to resolve such type of problems.…”

Section: Evolution Of Cognitive Radio For Future Cellular Network (5g)mentioning

confidence: 99%

Survey: 5g Wireless Communication Using Cognitive Radio

Kursheed¹,

Budyal²

2020

INDJCSE

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With the increasing growth in the wireless communication systems, the bandwidth requirement is also continuously increasing, and the increasing demands make the wireless communication resources more and more scarce. Cognitive radio technology facilitates an effective solution for bandwidth scarcity through a process of dynamic and opportunistic spectrum sharing over heterogeneous wireless networks. However, the fundamental goal of the 5G communication system based network is to offer extended coverage, a very high data transfer rate, massive connectivity with minimum latency as performance metrics of 5G communication system. To achieve these requirements, the 5G systems exploit the spectrum range from 30Ghz to 300GHz. This paper presents various aspects of theoretical background that relate the research insights of cognitive radio technology, spectrum sharing, and 5G communication system. The inferring of the research evolution and trends in the domain of the collaborative study of spectrum sensing, cognitive radio, and 5G provides future research directions based on the research gap analysis

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“…Once a PU requests the same channel, the CSU should leave that channel, perform spectrum handover (SHO), and switch to another appropriate free channel [26]. A management strategy is then necessary to control the number of SHOs, decrease the number of unnecessary handovers, and minimize the effect of multiple interruptions [27][28][29][30].…”

Section: Cr-based Hetnetsmentioning

confidence: 99%

Introductory Chapter: Primary and Secondary Users in Cognitive Radio-Based Wireless Communication Systems

Moghaddam¹

2018

Cognitive Radio in 4g/5g Wireless Communication Systems

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Additional information is available at the end of the chapter 1. Wireless communications and the necessity of cognitive radio Wireless communication systems play a special role in human life, facilitate the life, and change the world much more in the future. The diversity of applications and services of wireless communications indicates the widespread use of wireless systems and equipment in the future. Since the first radio link by Marconi in 1896, it has been more than 120 years, and several wireless communication systems have been introduced up to now. Meanwhile, the advancement of cellular wireless communications, whose idea came back to 1947 and their first generation in 1978 (namely advanced mobile phone service), has been well adopted and has grown dramatically, so that the researchers and operators are focused on standardization and design of 5G and 6G wireless communication systems [1]. From the beginning, one of the main problems in wireless communications is the scarcity of radio resources (frequency, time, and power). In recent years, the lack of frequency spectrum and the necessity of frequency reuse at different times and places and reduction of the consumed power are of great importance. Looking at the following laws: • Moore's law: The number of transistors that can be cheaply placed on a microchip doubles and the computer power exponentially increases approximately every 2 years [2] • Cooper's law: The number of voice calls or data that can be sent over the usable radio spectrum doubles every 30 months [2]

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Modeling and analysis of traffic‐aware spectrum handover schemes in cognitive HetNets

Cited by 13 publications

References 29 publications

An Adaptive Cell Selection Scheme for 5G Heterogeneous Ultra-Dense Networks

An Adaptive Cell Selection Scheme for 5G Heterogeneous Ultra-Dense Networks

Survey: 5g Wireless Communication Using Cognitive Radio

Introductory Chapter: Primary and Secondary Users in Cognitive Radio-Based Wireless Communication Systems

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