B-LEACH: A Clustering Protocol for Wireless Sensor Networks based on Bacterial Foraging Algorithm
Wireless sensor networks [WSN] are popular as they are potentially low cost solution to various real world challenges. Environment is monitored by the autonomous nodes of the WSNs. Recent research in WSN has led to various new routing protocols. Routing protocols have proven to increase the network throughput, reduced delay in packet transfer and save energy. Hence in this work we propose a novel clustering protocol that uses bacterial foraging algorithm [BFOA] inspired approach towards improving the existing basic LEACH protocol for reduction in energy consumption with respect to communication, aiming to enhance the network lifetime. Simulated results prove that implementing this kind of computational intelligence in the pre-existing protocol considerably improves its performance.
An Efficient Hybrid BAT-Optimized Clustering for Wireless Sensor Networks
koteswararao seelam, sailaja m, madhu tenneti
Cluster-based routing protocols offer advantages such as improved power control, reduced control messages, enhanced resource allocation and bandwidth re-usability. Low Energy Adaptive Clustering Hierarchy (LEACH) a cluster-based protocol includes distributed cluster formation. LEACH randomly selects sensor nodes as cluster-heads and rotates them to distribute energy load uniformly among network sensors. LEACH is ambiguous sensor nodes position and network Cluster Head (CH) numbers. This study proposes a hybrid BAT algorithm (HBA) with Differential Evolution (DE) to improve the efficiency and to overcome disadvantages of LEACH Simulation study revealed that the HBA achieved improved throughput, lowered delay and packets retransmission and better data dropped than LEACH
Vehicular Cloud Computing: leading towards tomorrows Internet of Vehicles
Vehicular Cloud Computing (VCC) adapts from the fact that Vehicular Nodes can use their on-board Computational power, Storage and Communicational resources to interact with the Cyber-Physical elements possible in ways as never before. Through this survey we identify Vehicular Cloud Computing as an essential stepping stone towards visualizing the Internet of Vehicles (IoV) eco-system to integrate Mobile Adhoc Networks, Wireless Sensor Networks, Mobile Computing and Cloud Computing. We provide an in-depth classification on the state of the art of Vehicular Cloud computing by drawing a relationship between the existing domains and Internet of Vehicles through a review of the works carried recently in literature. We compare and contrast Vehicular Cloud Computing with other similar fields to gain a better insight of the subject. Finally we present the open issues and challenges that need the utmost attention in realizing tomorrows cyber-physical systems
SCMR: Static Clustering based Multi-hop Routing in Wireless Sensor Network
The most challengeable issue in wireless sensor networks is the limited energy of their nodes that are distributed in a field for collecting information from the environment. Thus, energy efficiency and lifetime of these networks consider one of important and controversial issues in this field. In this paper, a new energy effective routing algorithm is presented which is based on static clustering and multi-hop transmission. The SCMR (Static Clustering Based Multi-hop Routing) Algorithm is verified with MATLAB simulator. Simulation results show that the new method compared to previous methods such as LEACH, could balances the energy consumption, thus increase the stable period of network.
Enhanced Security Technique for Wireless Sensor Network Nodes
Celestine Iwendi, Alastair Allen
The lightweight computational nodes being used in WSN pose particular challenge for many security applications. This paper investigates a number of security techniques and novel implementations appropriate for WSN nodes, including various trade-offs such as implementation complexity, power dissipation, security flexibility and scalability
Comparative study of several MAC protocols proposed in WSN
The lifetime of a sensor network is closely linked to the nodal life. The latter depends mainly on the power consumption of the node. We presented in this work some approaches to energy conservation in wireless sensor networks. The first area of energy conservation techniques aimed at reducing the duty-cycle nodes. This results in the reduction in the duration of radio activity to avoid excessive energy consumption due to communication. In this context, several methods have emerged either as MAC protocols low Duty-cycle or as independent higher-level protocols based on authorizations Sleep / Wakeup. The objective of this work is to do a thorough study on energy consumption in wireless sensor networks. The study points addressed are at the level of media access protocol or MAC protocol
Analysis and Comparison of Routing protocols in MANET using Simulation
Anjum Nazir, Celestine Iwendi and Murtaza Siddiqi
In this paper a comparative analysis among Proactive, Reactive and Hybrid routing protocolis presented using simulation. As we are well aware that a MANET is self-configuring network and most of the real world scenario involving MANET requires individual nodes to route data. Keeping in view MANET is infrastructure less and at times nodes are free to move in different direction, making routing protocol a vital component for network operational effectiveness and efficiency.
Analysis of TCP Performance over a Low-Delay MAC Protocol Designed for Satellite-based Sensor Networks
A. Y. Tambuwal, C. O. Iwendi
Advances in terrestrial network technology such as fibre optic cables have significantly increased data rates and reduced cost, making it highly attractive for high-speed data networks. However, satellite communication remains competitive for certain applications where it has clear advantages over other technologies including fibre optic cables. The point to multipoint broadcast capability of a satellite is an important characteristic that allows multiple sub-networks or nodes to be controlled simultaneously by a single transmission. Similarly, multiple sub-networks or nodes can send data to a central point through a common channel, instead of using multiple point-to-point channels. This facilitates implementation of unique supervisory control and data acquisition systems such as a sensor network to monitor oil and gas pipelines or for agricultural purposes. One important problem in design of a satellite data network is how uncoordinated sources can share the common satellite channel. A multiple access control protocol is required to achieve efficient sharing of the channel while meeting the user traffic constraints. This paper investigates effects TCP performance when used with a new low-delay protocol that integrates Random Access and Bandwidth-on-Demand techniques.
Performance Investigation of Split RA-DAMA Protocol
A. Y. Tambuwal
For satellite networks, it is well known that the requirement to dynamically negotiate channel capacity, both at the beginning and on resuming a connection, constitutes the main performance bottleneck for web transactions. This is due to addition of an access delay component that dominates the total transaction time. To solve this problem, several methods have been proposed such as multiple access control protocols that use a combination of Random Access and Demand Assigned Multiple Access techniques. While these methods can significantly reduce startup delay, packet reordering is an important problem that remains to be properly addressed. A new technique called Split RA-DAMA protocol is hereby proposed, which utilizes RA and DAMA channels to improve TCP responsiveness without causing packet reordering