Making the smart grid a reality will entail communication capabilities that do not exist in current power grids and their legacy control systems. New elements such as distributed energy generation PHEVs necessitate changes these existing networks. These be dictated by need for new operations allow efficient management of cannot supported infra structure. Moreover, let households man age usage more efficiently through AMI HEMSs. The realization systems require pushing networks far out from...

Cognitive radio is considered as a new paradigm of designing wireless communication systems that aims at improving the spectrum utilization. Spectrum sensing one most important elements in cognitive networks. Many algorithms have been proposed literature. Among these algorithms, energy detection has widely used practice because its computational and implementation simplicities. However, performance conventional greatly deteriorating due to impact noise uncertainty, especially low signal...

This paper addresses the problem of access point (AP) selection in large Wi-Fi networks. Unlike current solutions that rely on received signal strength to determine best AP could serve a wireless user's request, we propose novel framework considers quality service (QoS) requirements data flow. The proposed relies function reflecting suitability satisfy QoS takes advantage flexibility and centralised nature software defined networking (SDN). A performance comparison this algorithm developed...

The advent of the Internet Everything and new Ultra-Reliable Low-Latency Communication (URLLC) services has resulted in an exponential growth data demands at network's edge. To meet stringent performance requirements evolving 5G (and beyond) applications, deploying dedicated resources closer to mobile users is essential. Multi-Access Edge Computing (MEC) a promising technology for bringing computational users. However, distributed limited MEC must be effectively optimized maximize number...

Wireless Sensor Networks (WSNs) consist of a large number wireless sensor nodes networked together. It is complex set applications, link technologies, communication protocols, traffic flows and routing algorithms. Simulation predominant technique used to study analyse the performance potency senor network design. Since there are huge variety simulation tools available for WSNs, which vary in their characteristics capabilities, it often very difficult decide tool choose one more appropriate...

The popularity of Wi-Fi-enabled devices alongside the growing demand for non-licensed spectrum, has made Wi-Fi networks exceedingly congested. This endangers efficiency and negatively affect users' experience. problem is especially pressing in dense areas (e.g. shopping centers) where channel assignment more likely to be uncoordinated working environment Access Points (APs) become increasingly time-variant. As a result, availability Software-Defined Networking (SDN) network virtualization...

Cooperative spectrum sensing is an efficient solution to mitigate the primary hidden terminal problem through involvement of result for cooperative users. Clustering introduced tackle degradation in performance caused by fading and shadowing reporting channel, also reduce control channel overhead when number users becomes very large. In practice, some cluster heads might be far away from fusion centre, which leads more energy consumption their results especially large-scale cognitive radio...

We present Wi-5, a spectrum programming architecture for radio resource management in unlicensed frequency bands. It introduces control plane that offers fine grained allocation of resources, flexible configuration and wireless networking parameters, continuous monitoring the network status. These features, along with centralized nature this architecture, can effectively address congestion which often occurs To demonstrate Wi-5's capabilities, we show results obtained from emulating various...

Physical Layer Security (PLS) is widely recognized as a promising approach to secure wireless communications through the exploitation of physical properties channel. However, until today, PLS has mostly been concept from information theory without practical implementations. In this paper, we present an actual implementation in network. We achieved by leveraging flexibility and control granularity offered relatively new spectrum programming, which were able degrade quality eavesdropper's...

The paper presents a new clustering scheme for wireless sensor networks based on semantic properties. Unlike current schemes where signal strength and neighbouring are the most used criteria in cluster formation, this work, properties also taken consideration process of formation. Nodes inside same organized like hyper tree cluster-head is root. This organization allows layered data aggregation, avoids clusterhead overload energy dissipation, makes network more robust against links nodes...

Surprisingly little research has quantified the severity of Wi-Fi congestion in densely populated areas. We performed a high-fidelity 3D simulation performance realistic deployment typical apartment block. Our results show that leads to significant loss performance, and current channel selection procedures have only effect. Also strategy is mostly applied today, i.e. deploy additional repeaters Access Points (APs), fails. As this example "Tragedy Commons", some form collaboration between AP...

This paper focuses on addressing the Access Point (AP) selection problem by relying a centralized controller that provides global view of network. approach follows Software-Defined Networking (SDN) concept, which has long been considered in literature as an innovative method to control management functionalities for wired networks and is also now becoming hot topic context Wi-Fi networks. The proposed AP based novel algorithm relies Fittingness Factor (FF) maximize function reflects...

In spite of the enormous popularity Wi-Fi-enabled devices, utilisation Wi-Fi radio resources (e.g. RF spectrum and transmission power levels) at Access Points (APs) is degraded in current decentralised Radio Resource Management (RRM) schemes. Most state art centralised control solutions apply configurations which network-wide impacts involved parameters their mutual relationships are ignored. this paper, we propose an algorithm for jointly adjusting levels optimising channel assignment APs...

This paper addresses the problem of radio access technology (RAT) selection in heterogeneous networks (HetNets). Current approaches rely on signal related metrics such as to interference plus noise ratio (SINR) for best network wireless user. However, do not take into account quality service (QoS) requirements users and therefore often connect them most suitable network. We propose a QoS aware RAT framework HetNets based software-defined networking (SDN). The proposed implements strategy...

One of the main benefits smart grid will be introduction Distributed Energy Resources (DERs) into electricity at large scale. These DERs able to supply areas with when isolated from power due failure conditions or system/equipment failures. Although integration DER makes energy more reliable and reduces its cost, it creates new issues for distributed network operators (DNOs). While in traditional usually flows central stations consumers, a modern incremented DER, follows two directions as...

This paper presents a novel Access Point (AP) selection strategy based on potential game played at centralized controller. The proposed approach relies Software Defined Networking (SDN), which has long been considered in the literature as method to control management functionalities for Wi-Fi networks. use of SDN provides global view network, guarantees an efficient distribution users among APs. this is Fittingness Factor (FF) concept, metric reflecting suitability available spectrum...

Current interference management solutions for dense IEEE 802.11Wireless Local Area Networks (WLANs) rely on locally measuring the cumulative at Acess Point (AP) in charge of adjusting spectrum resources to its clients.These often result coarse-grained allocation that leaves many wireless users unsatisfied and increases congestion problem instead easing it.In this paper we present a centralised algorithm treats network-wide impact each channel individually allows controller adjust radio...

In Wi-Fi networks, Device-to-Device (D2D) communications aim to improve the efficiency of network by supporting direct communication between users in close proximity. However, a congested network, establishing D2D connections through locally managed self-organising approach will intensify congestion and reduce scalability solution. Therefore, centralised management must be involved orchestrating those actions guarantee sufficiency communications. this paper, we propose novel framework for...

Among wireless sensor networks applications, event monitoring is an application that has attracted a lot of attention in the recent years. As physical may be mobile, communication protocols should designed to support mobility and allow user track mobile continuously, energy-efficient way. In this paper, we present new protocol for networks. Once tracked detected, builds cluster contains all nodes detect with certain threshold. order save energy, propose use membership update mechanism status...

This paper addresses the issue of Handover (HO) decision in Wi-Fi environments. Existing HO methods do not meet requirements modern applications for mobile nodes due to lack intelligence, awareness Quality Service (QoS) and Experience (QoE) users. We, therefore, introduce a novel architecture that implements horizontal algorithm networks, based on Fuzzy Logic Control (FLC). is Software Defined Networking (SDN) concept, where network controlled centrally wireless Access Points (APs) are...