INTRODUCTION: Wireless Sensor Network is an interesting technology, which has great deal of node power, which affects the quality of various service parameters. The sensor nodes have been built with fixed energy and spend certain amount of energy for each data tran

Radio Access Network (RAN) slicing is one of the key enablers to provide the design flexibility and enable 5G system to support heterogeneous services over a common platform (i.e., by creating a customized slice for each service). In this regard, this paper provides an analysis of a Reinforcement L

INTRODUCTION: The Authors present a new approach to a method of dynamic spectrum management for military mobile ad hoc network. They propose that data concerning vital signs of tactical radio operators be used as context information for spectrum management. If the operator’s inability to operate a

In this paper, we introduce an Software Defined Networking (SDN)-based approach to support the network operations of heterogeneous hierarchical multi-domain Mobile Ad hoc Networks (MANETs). Our approach offers several capabilities, including seamlessly interconnecting heterogeneous MANETs, reducing ro

Remote and rural areas are a challenge to deploy cost-efficient connectivity solutions. 5G technology needs lower frequencies, which calls for spectrum sharing for local networks. Spectrum sensing could complement traditional database approach for spectrum sharing in these areas. This paper studie

The three-tier model for spectrum sharing in the 3.5 GHz band, outlined in the PCAST report [1], has drawn considerable attention from stakeholders, researchers and policy-makers. In its Further Notice of Proposed Rulemaking, the FCC points out that “[t]he 3.5 GHz Band could be an “innovation band,” where we can explore new methods of spectrum sharing and promote a diverse array of network technologies, with a focus on relatively low-powered applications.” [2]. In this context, we evaluate the technical, economic and policy aspects of wireless network virtualization in this band. Wireless network virtualization has been proposed as a promising mechanism for granting increased opportunities for spectrum sharing, and thus enhancing the efficiency in spectrum usage. To date, we can find myriad definitions and applications of wireless network virtualization, most of them focusing on the technical implications and feasibility of this approach [3–7]. In fact, it has been pointed out that deeper levels of virtualization increase the flexibility of spectrum [6], thus providing us with significant opportunities to address problems of shortage and scarcity. Beyond the purely technical aspects of wireless virtualization, we focus on the advantages of this technique and its applicability to a broader set of spectrum sharing scenarios. We show that the benefits of virtualization can be leveraged for the deployment of secondary markets for spectrum since it offers a path toward increased market liquidity and viability. Indeed, in [8], an initial attempt toward linking wireless virtualization with existing spectrum trading scenarios [9,10] was made. The particular virtualization method adopted consisted in the creation of a pool of spectrum resources, consistent with what was presented in [7]. It was not surprising that benefits from virtualization were attained: the results obtained showed increased market viability opportunities. In this study, these benefits occurred because some of the physical complexities of electromagnetic spectrum no longer played a role in the market. In this paper, we explore the broader implications of virtualization in the spectrum sharing context. This requires analyzing the definitions and scope of virtualization and merging them with economic and regulatory characteristics intrinsic to the use of electromagnetic spectrum. Thus, we explore the conditions for the formation of pools of virtualized spectrum, the interaction between Priority Access users and General Authorized Access users; the requirements for economic feasibility and efficiency of such an approach and finally, the role played by regulation. This enables us to take into account characteristics pertinent to the stakeholders, to the physical spectrum resource and the appropriate framework in which they would interact. By following this path, we aim at shedding light on the advantages, boundaries and feasibility of spectrum sharing and trading in the 3.5 GHz band in a virtualized setting. In this manner, we would be able to obtain a more comprehensive view on what could be an efficient alternative for spectrum sharing by leveraging current technology advances and examining practical spectrum sharing scenarios.

This paper investigates how to increase communication distance of underwater wireless optical communication system. In order to analyze the communication distance of UWOC, the performance of optical transmitter and receiver, underwater channel characterization and modulation schemes were discussed.