Wireless Sensor Network Protocols, Performance Metrics, Biosensors, and WSN in Healthcare: A Deep Insight

Wireless Sensor Network Protocols, Performance Metrics, Biosensors, and WSN in Healthcare: A Deep Insight

Sumathi V. (Sri Ramakrishna College of Arts and Science, India)
DOI: 10.4018/978-1-7998-1090-2.ch005

Abstract

Wireless network led to the development of Wireless Sensor Networks (WSNs). A Wireless sensor network is a set of connected devices, sensors, and electronic components that can transmit the information collected from an observed field to the relevant node through wireless links. WSN has advanced many application fields. It can change any kind of technology that can modify the future lifestyle. WSNs are composed of tiny wireless computers that can sense the situation of atmosphere, process the sensor data, make a decision, and spread data to the environmental stimuli. Sensor-based technology has created several opportunities in the healthcare system, revolutionizing it in many aspects. This chapter explains in detail wireless sensor networks, their protocol, and performance metrics. The impact and role of the Biosensor in a wireless sensor network and healthcare systems are depicted. The integration of the computer engineering program into the WSNs is addressed.
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Wireless Sensor Network

Rapid development in the field of sensor-based devices, computer technology, and wireless communication has lined up for the proliferation of WSN (Dargie et al., 2008). A common objective is achieved by a group of wireless sensors collaboration. The WSN consists of one or more than one sink that is a base station that collects the data from all the sensor devices. Through these sinks, WSN establishes the interaction to the outside world (Stroulia et al., 2009). With the use of unsophisticated sensors, WSNs develops a sensor device to perform sensing which is inexpensive and conventional when compared to the traditional approaches(Li et al., 2008). The main advantage of the conventional approach is greater coverage, accuracy, and reliability at a possibly lower cost. WSN is categorized into two groups such as Structured and Unstructured WSN(Raghavendra et al., 2006).

  • Structured WSN: A limited number of the sensor nodes or all of them in the WSN will be deployed in the preplanned network structure. In this, only fewer amount of sensor nodes will be deployed. The main advantage of this network is less in network maintenance and in expensive. Since the nodes are retained at a definite location,only a lesser amount of nodes can be deployed in the network to establish coverage area while ad hoc network’s deployment can be established even to uncovered regions.

  • Unstructured WSN: In the unstructured WSN poses a dense compilation of sensor nodes. These sensor nodes follow the Ad-hoc principle for deploying the sensor nodes in the network. This sensor network has no architecture and remains unattended to perform observe and report over the functions of the sensor node. Because of the vast nodes in the unstructured WSN, maintenance of network is a complex task. Managing connectivity among the nodes and detecting any link failures during transmission is complicated in unstructured WSN.

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