Wireless sensor networks (WSNs) research has pre-dominantly assumed the use of a portable and limited energy source, viz. batteries, to power sensors. Without energy, is essentially useless cannot contribute utility network as whole. Consequently, substantial efforts have been spent on designing energy-efficient networking protocols maximize lifetime WSNs. However, there are emerging WSN applications where sensors required operate for much longer durations (like years or even decades) after...

In underwater sensor networks (UWSNs), determining the location of every is important and process estimating each node in a network known as localization. While various localization algorithms have been proposed for terrestrial networks, there are relatively few schemes UWSNs. The characteristics fundamentally different from that networks. Underwater acoustic channels characterized by harsh physical layer environments with stringent bandwidth limitations. variable speed sound long...

Quality of service (QoS) support in mobile ad-hoc networks (MANETs) is a challenging task. Most the proposals literature only address certain aspects QoS support, e.g., routing, medium access control (MAC) and resource reservation. However, none them proposes model for MANETs. Meanwhile, two models have been proposed Internet, viz., integrated services (IntServ) differentiated (DiffServ) model, but these are aimed wired networks. In this paper, we propose flexible MANETs (FQMM) which...

This paper presents a mobility-based d-hop clustering algorithm (MobDHop), which forms variable-diameter clusters based on node mobility pattern in MANETs. We introduce new metric to measure the variation of distance between nodes over time order estimate relative two nodes. also stability cluster members. Unlike other algorithms, diameter is not restricted hops. Instead, flexible and determined by clusters. Nodes have similar moving are grouped into one cluster. The simulation results show...

A mobile ad hoc network is an autonomous system of infrastructureless, multihop wireless nodes. Reactive routing protocols perform well in such environment due to their ability cope quickly against topological changes. In this paper, we propose a new protocol called Caching and Multipath (CHAMP) Routing Protocol. CHAMP uses cooperative packet caching shortest multipath reduce loss frequent route breakdowns. Simulation results reveal that by using five-packet data cache, exhibits excellent...

For large wireless sensor networks, identifying the exact location of every may not be feasible and cost very high. A coarse estimate sensors' locations is usually sufficient for many applications. In this paper, we propose an efficient Area Localization Scheme (ALS) underwater networks. This scheme tries to position within a certain area rather than its location. The granularity areas estimated each node can easily adjusted by varying system parameters. All complex calculations are handled...

The exponentially growing number of devices connected to the Internet, diversity Internet Things (IoT), and variety IoT protocol stacks yield concerns about sustainability. A promising solution is in integration platforms which can address challenges such as interoperability, scalability adaptability surrounding IoT. Current implementations are based on centralised architectures, yet a decentralised architecture with logic moved (network) edge offer several benefits devices. This paper...

The salient features of acoustic communications render many schemes that have been designed for terrestrial sensor networks unusable underwater. We therefore propose a novel virtual sink architecture underwater aims to achieve robustness and energy efficiency under harsh channel conditions. To overcome the long propagation delay adverse link conditions in such environments, we make use multipath data delivery. While conventional routing tends lead contention near sink, avoid this caveat with...

Underwater Wireless Sensor Networks (UWSNs) are expected to support a variety of civilian and military applications. Sensed data can only be interpreted meaningfully when referenced the location sensor, making localization an important problem. In terrestrial WSNs, this achieved through series message exchanges (via RF communications) between each sensor Global Positioning System (GPS) receivers. However, is infeasible in UWSNs as GPS signals do not propagate water. Acoustic communications...

Scalable network-wide traffic classification (TC), combined with knowledge of endpoint identities, will enable the next wave innovation in networking, by exposing a valuable layer TC-enriched flow context information for applications to consume. However, full TC services over standard software-defined networking (SDN) architecture, where packets requiring application must pass via control plane, do not scale. Sending that require inspection plane causes resource exhaustion on (e.g., CPU and...

Energy consumption is an important issue in the design of wireless sensor networks which typically rely on nonrenewable energy sources like batteries for power. Recent advances ambient harvesting technologies have made it a viable alternative source powering perpetually. In this paper, we optimize network performance by finding optimal routing algorithm and relay node placement scheme powered harvesting. We evaluate three different variants geographic algorithms consider two schemes, viz....

Entropy-based features have been widely utilized for detecting DDoS attacks in recent years. However, existing approaches mainly focus on using a small number of entropy-based to distinguish attack traffic from normal traffic. The drawback this approach is that it limits the type can be detected. To overcome problem, we proposed set new help detect accurately and introduced novel multi classifier system based multiple machine learning classifiers increase generality accuracy low-intensity...

Software Defined Networking (SDN) is the latest network architecture that does for networking what virtualisation did servers in data centres. In SDN, separation of control plane from brought about new flexibility routing flows through network. Closely associated with SDN OpenFlow, most widely used protocol governing information exchange between (switching devices) and (controller). The ease implementing testing schemes has prompted many researchers to adopt experimental prototyping approach...