IET Networks

As an inevitable trend of future fifth generation (5G) networks, software-defined architecture has many advantages in providing centralised control and flexible resource management. However, it is also confronted with various security challenges and potential threats with emerging services and technologies. As the focus of network security, intrusion detection systems (IDSs) are usually deployed s... View full abstract»

The large deployment of Internet of things (IoT) is actually enabling smart city projects and initiatives all over the world. Objects used in daily life are being equipped with electronic devices and protocol suites in order to make them interconnected and connected to the Internet. According to a recent Gartner study, 50 billion connected objects will be deployed in smart cities by 2020. These co... View full abstract»

Social networks have become part of today's life; however, they also create numerous privacy problems for their users as they reveal sensitive information. Thus, the privacy preservation has become a big problem in social networks and there are several researches related to this topic. However, the current research achievements for this issue are only ad hoc solutions and the broad picture of the ... View full abstract»

In this study, the authors focus on theoretical modelling of the fog computing architecture and compare its performance with the traditional cloud computing model. Existing research works on fog computing have primarily focused on the principles and concepts of fog computing and its significance in the context of internet of things (IoT). This work, one of the first attempts i... View full abstract»

In this study, the authors consider the physical-layer security for transmission in underlay cognitive radio networks, where consisting of a primary source-destination pair, a secondary transmitter-receiver pair and a common eavesdropper (E). To transmit data in a secure and reliable manner, they propose a transmission protocol for an underlay cognitive radio network. In particular, the secondary ... View full abstract»

Device-to-device (D2D) communication is a promising technology for the next generation mobile communication networks (5G). Indeed, it is expected to allow high throughput, reduce communication delays and reduce energy consumption and traffic load. D2D technology will enhance the capacity and the performance of traditional cellular networks. Security issues must be considered in all types of commun... View full abstract»

Wireless sensor networks (WSNs) are widely used in military, traffic, medical and so on. The design of routing protocol for WSNs is limited by the single nature of the local topology information. Meanwhile, the power supply of sensor networks node, communication ability and storage capacity are limited, so how to improve the efficient energy of nodes and extend the networks life cycle is the focus... View full abstract»

Software defined networking (SDN) and network function virtualisation (NFV) have become hot topics in recent years. On one hand, SDN decouples the control plane from the data plane allowing the rapid innovation and the introduction of new services in an easy way. On the other hand, currently proprietary appliances such as load balancers and firewalls are implemented in hardware, NFV aims to change... View full abstract»

In Wireless Sensor Networks, the power resources of the nodes are significantly restricted. Hence, a special treatment for their available energy is deeply required. In long distance transmission, Multi-Hop (MH) techniques are preferred. Although MH minimizes the amount of energy cost consumed by each node along the path but finding the optimal routing path between nodes is still very interesting ... View full abstract»

Vehicular ad hoc network (VANET) is a backbone of intelligent transportation system that is envisaged to play a significant role in the futuristic smart cities for safety and traffic management. Designing an optimal multi-hop routing protocol with lower transmission delay and reduced overhead has remained to be a challenge owing to the inability of existing VANET architecture to handle scal... View full abstract»

To satisfy the recent growth of mobile data usage, small cells are recommended to deploy into conventional cellular networks. However, the massive backhaul traffic is a troublesome problem for small cell networks, especial in wireless backhaul transmission links. In this study, backhaul traffic models are first presented considering the Gauss-Markov mobile models of mobile stations in small cell n... View full abstract»

With the standardisation of the fifth generation (5G) wireless network interface was established in 3GPP, the features of 5G arouse great interest both in academics and industry, even government. The significant advancements of 5G wireless network technology will make a great increase in the demand for content-rich streaming media services. What's more, many mobile devices with heterogeneous netwo... View full abstract»

The fifth-generation (5G) mobile networks are expected to bring higher capacity, higher density of mobile devices, lower battery consumption and improved coverage. 5G entails the convergence of wireless and wired communications in a unified and efficient architecture. Mobile nodes, as defined in fourth-generation era, are transformed in heterogeneous networks to make the front-haul wireless domain... View full abstract»

The concept of vehicular ad hoc networks (VANETs) has emerged as an efficient way to improve the performance of transportation systems, enhance travel security and help address traffic control problems that modern society is facing today. Large amounts of VANET data are typically collected from highly heterogeneous sources paving the way for a new era of VANET-Big Data. This data must be pr... View full abstract»

The objective of this study is to present the architecture and laboratory experimentation of an Internet-based communication platform to enable residential demand response (DR) programmes that do not rely on the advanced metering infrastructure (smart meters). Technologies and software that serve as the building blocks for the proposed platform, together with the messaging architecture based on th... View full abstract»

Following the characteristics of the cognitive radio (CR) and the exponential increase of the vehicles, it is envisioned to deploy CR in vehicular ad-hoc network (VANET) in near future. Due to the mobility of the vehicles, it is quite challenging to find the vacant band and to reuse it for data transmission purpose without affecting the primary network. Further, the presence of primary user... View full abstract»

With the development of cloud computing in the mobile communications industry, the credibility between users and the cloud has become an important obstacle to the development of mobile cloud services. Therefore, the user's abnormal behaviour detection is particularly important. The authors propose a selective clustering ensemble algorithm based on fractal dimension. In their proposed algorithm, th... View full abstract»

This study introduces a routing model which has the ability to detect the mobile ad-hoc network (MANET) mobility states and self-adapt routing metrics accordingly. In this model, nodes rely on theirs mobility indicator to detect whether the network is relatively static or mobile and hence switch the routing metric to either expected transmission count (ETX) or mobility factor (MF), respecti... View full abstract»

Data Center Transmission Control Protocol (DCTCP) is an excellent transmission control protocol for data centre network (DCN). Although DCTCP can achieve the high throughput and stability, it trades off the convergence time. It takes a long time for a new flow to increase its congestion window (cwnd), which greatly increases the completion time of some delay sensitive short flows, such as q... View full abstract»

With the rapid growth in the number of mobile phone users, mobile payments have become an important part of mobile e-commerce applications. Secure payment systems directly affect the security of e-commerce systems. This study proposes an anomaly detection mechanism supported by an information entropy method combined with neural network to improve mobile payments security. As the entropy value is s... View full abstract»

Software-defined networking (SDN) already has an established presence in the networking industry as an emerging paradigm for designing network architectures, decoupling the control from the forwarding plane and offering a centralised way of network management. Cloud and enterprise infrastructure engineers have already adopted such techniques for building up their environments, deliberating the cos... View full abstract»

The Internet is populated with billions of electronic gadgets that have become a part of our fabric. Internet of Things is gaining popularity in at most all applications from smart buildings, intelligent transportation, healthcare and defence. IoT is a many vision one paradigm technology. One of the many visions of IoT is to make `Things' social. Social Internet of Things (SIoT) is a young paradig... View full abstract»

In recent times, there has been increasing awareness of employee behaviour prediction in healthcare, trade, and industry systems worldwide and its value on returns and profits of these systems. Nevertheless, determining the top employees with capacities and endorsing them for promotion is depending more or less on features which are dynamic and serving these systems' interest. The current structur... View full abstract»

In this study, the authors present an analytical model for the contention-based access periods (CBAPs) and service periods (SPs) as specified in the medium access control (MAC) layer of IEEE 802.11ad standards. The analytical model for CBAP is based on a two-dimensional Markov chain which captures the hybrid nature of IEEE 802.11ad MAC. The Markov chain is used to obtain important metrics like MAC... View full abstract»

Networked visual applications such video streaming have grown exponentially in recent years, yet are known to be sensitive to network impairments. However, available measurement techniques that adopt a full reference model are impractical in real-time streaming because they require the original video sequence available at the receivers side. The primary aim of this study is to present a hybrid no-... View full abstract»

The evaluation of vital nodes in complex networks has been an increasing widespread concern in recent years. Seeking and protecting vital nodes is important to ensure the security and stability of the whole network. Presently, most of the existing evaluation algorithms cannot completely reflect the circumstances of complex networks because these algorithms are proposed based on a certain character... View full abstract»

Vertical handoff (VHO) decision services play an essential role in the current wireless networks. Many algorithms designed aim at quality of service while granting seamless roaming amongst a number of heterogeneous access networks. In this study, the authors proposed an intelligent VHO decision strategy targeting to maximise user satisfaction without compromising on quality of service for non-real... View full abstract»

Wireless body area networks (WBANs) can help in enabling efficient patient monitoring solution for ubiquitous healthcare. Communication in WBANs is undertaken in two phases: intra-WBAN and extra-WBAN. The prevailing WBANs use cellular network or WiFi in the extra-WBAN phase involving communication between the on-body coordinator and access points (APs) connected to the medical server... View full abstract»

Localisation is an essential and important research issue in Internet of Things (IoT). Most localisation schemes focus on outdoor IoT. However, indoor IoT is required in some applications such as target detection and tracking, and emerging smarter healthcare. As such, localisation approaches designed for indoor IoT are necessary. Note that the smarter healthcare emerges at an unprecedented speed w... View full abstract»

Existing works on energy trading consider different schemes for forming energy trading networks, which assume that each plug-in hybrid electric vehicle (PHEV) is connected with a single micro-grid. Consequently, in on-peak hours, a PHEV obtains the requested energy during the allotted time slot by paying a higher price. Alternatively, the PHEV waits for a significant duration of time to get servic... View full abstract»

Secure and stable routing is a critical issue in a conventional network environment, as the control and data planes are integrated. An intelligent routing is highly essential to provide an attack free network to its intended users. The programmable software defined network is an emerging network paradigm in which the security policies and the forwarding rules are implemented in the controller via ... View full abstract»

The transition from IPv4 to IPv6 is an inexorable trend in the development of Internet. However, since IPv4 has been widely deployed for many years, it is mandatory that the existing IPv4 and the newly deployed IPv6 coexist and interoperate seamlessly. With the study of various mechanisms proposed for the interoperability between IPv4 and IPv6, some mobility management protocols are also extended ... View full abstract»

Mobile Ad-hoc NETwork (MANET) is a rapidly changing network having mobile nodes. The wireless links connecting a node pair are unreliable due to the mobility of nodes; thereby MANET is subjected to frequent link failures that subsequently lead to route failure. It is required for the routing algorithms to determine routes enduring connectivity providing uninterrupted data transmission witho... View full abstract»

This study analyses multi-server multi-service queueing networks with service protection. To guarantee each service a certain quality-of-service and at the same time ensure high utilisation of servers, a minimum capacity is reserved each service. In addition, all services share the remaining non-reserved capacity and all buffers in such a way that the system becomes reversible. This implies the mo... View full abstract»

In opportunistic networks (OppNets), routing and data forwarding among mobile devices are facilitated by relays or next-hop forwarders. To guarantee end-to-end data delivery it is important to provide participation. However, in sparsely connected OppNets, it is extremely challenging to monitor the behaviour of the relays and identify selfish/malicious relays cooperating with each other in order to... View full abstract»

Deep packet inspection (DPI) represents the major process in network intrusion detection and prevention systems. In DPI each security threat is represented as a signature, and the payload of every incoming data packet is matched against the set of current signatures. Moreover, DPI is also used for other networking applications such as packet classification, quality of service techniques, protocol ... View full abstract»

Energy consumption is a crucial design concern in mobile ad hoc networks (MANETs), since nodes are powered by batteries with limited energy, whereas in existing dynamic source routing (DSR) does not take the energy limitation of MANET nodes into account. In this study, the authors propose an efficient algorithm for MANETs, which maximises the network lifetime by minimising the power consump... View full abstract»

OpenFlow (OF) is one of the most widely used protocols for controller-to-switch communication in a software defined network (SDN). Performance analysis of OF-based SDN using analytical models is both highly desirable and challenging. There already exists a very elegant analytical model based on M/M/1 queues to estimate the packet sojourn time and probability of lost packets for the case in which a... View full abstract»

The future wireless communication systems require an intelligent and service adaptive network selection to perform vertical handover (HO) in heterogeneous environments. Since multiple parameters are considered to select the best suitable network, reducing the complexity in multi-attribute decision making algorithm becomes apparent. In the proposed scheme, fuzzy logic controllers are used to estima... View full abstract»

Although it is fundamental to inter-domain routing in the Internet, the border gateway protocol (BGP) is susceptible to both misconfiguration and malicious attacks. Prefix-hijacking problems arise when an Internet service provider incorrectly advertises a route to one or more prefixes, and path hijacking problems arise when an advertisement contains an incorrect path. Several proposals have been m... View full abstract»

In this study, the authors focus on energy-efficient routing in wireless ad hoc and mesh networks. Since the existing energy-efficient routing algorithms are fixed and unaware of the channel fading dynamics, they may be suitable if the antennas at network nodes are situated in very high altitudes and have highly directive links. Although, some physical experimental results suggest that even... View full abstract»

Wireless sensor and actuator networks (WSAN) have greatly benefited from the latest development in real-time Internet of Things standardisation efforts. Specifically, the Internet Engineering Task Force Constrained Application Protocol (CoAP) is one of the preferred mechanisms that provide session transport in the context of low-power low-rate networks in general and WSAN in particular. CoAP, that... View full abstract»

Duty-cycled technology has been introduced as an efficient way to preserve node energy and prolong network lifetime for wireless sensor networks (WSNs). However, many applications with real-time feature require that some message must be sent to the sink node within a limited time. The authors propose a novel data collecting scheme - MTDR which aims to minimise transmission delay in low-duty-cycle ... View full abstract»

The sensor nodes of wireless sensor networks (WSNs) are usually positioned in remote or inaccessible areas and hence the physical maintenance such as battery replacement is more difficult. One of the core challenges of WSN is to increase the network life time, meaning that the efficiency of power utilisation should be the maximum. The major reasons for high power consumption are drawn out transmis... View full abstract»

Providing an acceptable level of quality of service (QoS) for critical applications is one of the interesting topics in next generation wireless networks. Confronting the major criticisms of resource reservation protocol (RSVP), the next steps in signalling (NSIS) was introduced as a general framework to include not only the RSVP but other signalling services in IP-based networks. It attempts to a... View full abstract»

As a set of extensions to the regular Transmission Control Protocol (TCP), Multipath TCP (MPTCP) enables the multi-homed devices to access one data stream through multiple paths. MPTCP congestion window control is the crucial part of maintaining the fair network resource allocation, especially in the coexist scene of MPTCP applications and regular TCP applications. However, the current MPTCP conge... View full abstract»

Recently, the visible light communication (VLC) is considered as a future emerging technology in the telecommunication and lighting industry, as defined in the IEEE 802.15.7 standard. In the meantime, the ANSI E1.45 standard was made to provide VLC data transmissions from a VLC data server to a lighting device that is equipped with a VLC transmitter in lighting control networks. However, the ANSI ... View full abstract»

Cloud-based virtual networking environments are required to provide fine-grained quality of service (QoS) control without sacrificing scalability. However, no single approach can currently achieve these two goals simultaneously. FlowVisor is a building block to virtualise networks with fine-grained QoS support; however, scalability issues caused by the OpenFlow protocol and the centralised control... View full abstract»