Wireless sensor network

1) Linked Cluster Algorithm (LCA) [5], [6], [7]: LCA, was one of the initial clustering algorithms evolved. It was primarily developed for wired sensors, but later applied in wireless sensor networks. In LCA, a unique ID number is allotted to each node and has two means of becoming a cluster head. The first way is that if the node has the greatest ID number in the set including all neighbor nodes and the node itself. The second way is to assume that none of its neighbors are cluster heads, then it becomes a cluster head. In this way, LCA search a solution which is surely not an optimal solution. 2) Linked Cluster Algorithm (LCA) [5], [6], [7]: LCA2 was anticipated to reduce the selection of an unnecessary number of cluster heads, as in LCA. In LCA2, the concept of a node being covered and non-covered was introduced. A node is considered as covered if one of its neighbors is a cluster head. Cluster heads are primarily selected from nodes which are having lowest ID among non-covered neighbors. Again the probability of achieving success is less. 3) Highest-Connectivity Cluster Algorithm [7]: This algorithm is analogous to LCA. In…

WBAN or Wireless Body Area Network is a new technology that has been invented for monitoring health condition of an individual. This is fitted in the body of a person Wire Sensor Network or WSN is possible due improvement of sensor technology as well as computer miniaturization. As the data related to patients are stored in a WBAN it is imperative that security of the data must be maintained. Body Area Network is a system comprising of wireless network of sensors to monitor health designed for…

2.5 Proposed Architectures for SDN in WSN The novel idea of exploiting OpenFlow technology to address reliability issues in sensor networks was presented by (Arif Mahmud and Rahim Rahmani, 2011) at the IEEE International Conference on Computer Science and Network Technology while the first architectural proposal was presented by (Luo et al., 2012) in the form of Software Defined Wireless Sensor Network (SD-WSN). Up until now, very limited research work is carried out in this area. Some of the…

The communication protocols used in connecting sensors form a network for collecting sensory information called BSN. Patients who are going about their day to day activity can receive quality health monitoring in real time by us of BSN. The BSN nodes are attached to these patients. On a predetermined period, the BSN collect health information such as pulse, blood sugar level and temperature and transmit it to a remote medical aid. This way, the medical personnel are able to keep up to date with…

1.1.1 Types of Sensor Networks Terrestrial WSNs: - In Terrestrial WSNs, nodes are distributed in a given area either in a pre-planned manner (sensor nodes are placed according to optimal placement, grid placement, 2-d and 3-d placement models) or in an ad hoc manner (sensor nodes are randomly placed in the target area by dropping it from plane). After all battery power is limited and it cannot be reenergized, terrestrial sensor nodes must be provided with a maximum power source such as solar…

IoT or internet of things can be considered as the new backbone of the society, which is related to information. IoT is a well-known term which is related to the interconnectivity between the two or more devices (the devices are physical devices such as buildings, smart devices, actuators, sensors, and software). It can be basically anything and everything which can be digitally connected with each other so that they can start the process of sharing data with each other. The process of sharing…

CHAPTER 1 1. INTRODUCTION 1.1 WIRELESS SENSOR NETWORK (WSN): Wi-Fi sensor networks (WSN), once in a while called wireless tool and actuator networks (WSAN), are spatially disbursed autonomous sensors to monitor bodily or environmental situations, which include temperature, sound, pressure, and so forth. and to cooperatively pass their expertise through the network to a major location. The extra brand new networks are bi-directional, additionally sanctioning control of device activity. The…

1.1 Introduction This chapter will briefly discuss the background of Software Defined Networking (SDN) and its use in Wireless Sensor Networks (WSN). It will also state the Problem Definition, the Aims & Objectives of this project, and the Methodology used to achieve those objectives. In the end, it will present an overview of the dissertation’s layout. 1.2 Background The Internet has made an enormous impact on the world of communications. It has interconnected billions of networking devices…

basically compares various wireless networking technologies which can be used for industrial automation and sensing. Among all these technologies, special emphasis is given on Zigbee. Zigbee is a technology known for its low power consumption, low data rates, and self-healing reliable networks, which makes it very efficient for industrial applications. The layer by layer protocol stack architecture of Zigbee illustrates these advantageous features. Zigbee is used for automation and networking…

Energy efficiency and other measures driven by government policy, as well as advances in technology, have contributed to both a need and a means to create user friendly smart home devices. (Smart metering, 2015) Wireless sensor technology and handheld smart devices such as phones and tablets have become the platform on which this new wave of technology has been based. In combination…