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We consider joint caching, routing, and channel assignment for video delivery over coordinated small-cell cellular systems of the future Internet. We formulate the problem of maximizing the throughput of the system as a linear program, in which the number of variables is very large. To address channel interference, our formulation incorporates the conflict graph that arises when wireless links interfere...
WSN has collection of sensor nodes, generally these sensor nodes tiny in size, less power and less cost and multifunctional in nature. Different routing protocols aim is to optimize lifetime and energy of the sensor networks. A lot of routing protocol in wireless sensor network also current senerio dependent, which gives the plateform to develop variety of protocol, Basically according to the communication...
Generally in practice there are Optical Fiber, Waveguides, Satellite Communication, Coaxial Cable and copper Wire which are utilized by the heterogeneous and homogeneous networks to offer wider range of data and voice communication to the end users. In future as the demands for bandwidth increases for the purpose of communication, this results into imbalance of the traffic load. To provide addition...
A wireless sensor network (WSN) consists of a large number of sensor nodes with limited batteries, the sensoring devices are deployed randomly on a zone to collect data. WSNs are threatened by several malicious behaviors caused by some nodes. The impact of such behaviors can be serious, even fatal, due to the collaborative nature of nodes in a network without fixed infrastructure. Then, in this work...
This article is presented based on Zigbee technology node design and algorithm of vehicle tracking localization of research, the low rate of using the Zigbee technology, the characteristics of low power consumption, low price, studies the algorithm of vehicle orbit. In this paper, the DV - Hop algorithm is based on distance vector routing distributed localization algorithm is put forward. The algorithm...
In this paper, we present a hierarchical routing algorithm based on a bio-inspired heuristic named Cuckoo Search (CS) approach. In our proposed scheme, the network area is divided into a logical virtual grid. Nodes are deployed randomly and organized as static clusters where each cell represents one cluster. After the cluster heads are elected, data is collected, aggregated and forwarded to the base...
In single cellular networks, the mobile stations cannot communicate directly with each other. All communications are relayed through the base stations. Such topology suffers from many limitations such as the congestion problem when a large number of users are communicating in the same time to a base station. In this context, the device-to-device communications have been proposed to overcome the limitations...
Although the importance of Disaster Response Networks (DRNs) has been highlighted in many researches, the requirement of spectrum agility has not been well addressed. In this paper, we focus on using all-spectrum cognitive radio for DRNs to fulfill this requirement. We consider a DRN constructed by Cognitive Radio Base Stations (CRBSs), which are deployed in the disaster affected area. Each CRBS is...
Directed diffusion is a well know routing algorithm for Wireless Sensor Networks (WSNs) that was designed in 2003. Directed diffusion saves energy by sending data packets hop by hop and by enforcing paths to avoid flooding. The main disadvantage of directed diffusion is that it is not aware of the network and nodes status and as a result cannot compare potential paths to find the best or healthier...
IoT resource registration and lookup interfaces have been specified for Resource Directory (RD) with defined resource link format in IETF standard. However, it has many drawbacks due to the nature of the centralized architecture. This paper proposes an ICN-based distributed RD architecture. The proposed distributed IoT resource discovery and routing mechanisms allow and reuse the existing RD resource...
Wireless Sensor Network (WSN) contain some of sensor nodes which interact with others through physical parameters like sunlight, wind, vibration, humidity etc. From Base Station (BS) Sensor node sends and receives data to or from wireless stations. Clustering schemes in WSN are two types homogeneous schemes and heterogeneous schemes. In Homogeneous scheme initial energy is same for each node but in...
In this paper, we consider the problem of cross-layer radio resource management in heterogeneous networks (HetNets) with flexible backhaul, which aims at minimizing the total transmit power of base stations (BSs) while guaranteeing the average end-to-end data rate requirement of each data flow. We formulate the problem as a two-timescale stochastic optimisation, where the long-timescale control variables...
“Wireless Sensor Networks (WSNs) are currently using in various application areas like as military, health care, ecological, medical, process management, environmental, industrial, agriculture etc. In this article we discussed about the security issues in WSNs. First of all we constraints on the obstacles in WSNs, requirement for security and different attacks at various levels with their solutions...
Wireless sensor networks (WSNs) are made up of large number of sensor nodes with restricted power resources and storage capacity. As it is necessary to utilize the limited power of each node very efficiently. Therefore it is essential to design an improved chain-based routing protocol for enhancing the lifetime of the network. Among all the existing routing protocols, chain-based routing is one of...
In this paper, cluster head and vice cluster head selection is discussed and a method of energy efficient routing is presented based on both particle swarm optimisation technique and V-LEACH protocol. Performance comparison with existing leach protocol shows proposed protocol provides better performance to minimize energy dissipation in the transmission and increases the life time of the wireless...
These days wireless sensor networks handle a widespread range of monitoring tasks using their sensing and vision capabilities. These tasks may consist of very complex functions and large calculations. In order to make network alive for a long duration, these sensors have to take decision in judicious and efficient manner. The increased lifetime results into increased connectivity. Also, the intellectual...
Wireless Sensor Network (WSN) is structure less platform which consists of multiple number of small sensing, computing capable nodes. WSN facilitate monitoring and detecting physical condition of any environment using sensors. Each sensor is managed with limited battery backup and hence lifetime of the overall system becomes very less. In modern scenario, it's very challenging to prolong the network...
Energy consumption in Wireless Sensor Networks (WSNs) is mainly during sensing, communication and data processing. Main objective of this work is to reduce the overall energy consumptions in the system and prolong the network lifetime as well as reduce the number of bit transmission. In our algorithm we design single bit transmission to minimize the energy consumption. To generate a node energy model...
This paper advice the modified Geographical energy aware routing in WSN. In which separation of the sensor nodes based on their location given by the node electronics using GPS, into certain regions are classified. Sink node (base station) is established away from the sensing region and a gateway node at the middle of sensing region. If the distance of sensor nodes from sink node and gateway node...
In today's era security is one of the main concern in every field also in wireless sensor networks. Resource limitation is main concern of sensor nodes in wireless sensor networks. There are many security threats which are affecting the, functionality, security and network life time of and wireless sensor networks. In this paper security threats, security goals, various attacks, classification of...
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