Wireless Sensor Networks

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Wireless sensor networks (WSANs) are a group of sensors and actors that are linked by a wireless medium for the purpose of performing distributed sensing and action on a given task. This involves the sensors collecting information about the surrounding physical environment and sending the information to the actors which take the decisions and perform some needed action basing on the information received from the sensors about the surrounding environment. These sensor networks are sometimes referred to as wireless sensor and actuator networks. They monitor physical or environmental conditions such as sound, pressure, temperature among others and send the collected data to the required location. Effective sensing and acting requires a distributed local coordination methods and mechanism among the sensors and the actors in addition to this, sensor data should be valid in order for right and timely actions to be performed. This paper describes secure routing in wireless sensor networks and outlines its threats on security.

Keywords: Wireless sensor and actor networks; Actuators; Ad hoc networks; Sybil attack; Real-time communication; Sinkhole; Routing; MAC; adversary.

With the recent rapid improvement on technology, many networking technologies have been created to make communication easy. One such technology is distributed wireless sensor network which has a capability of observing the physical world and process the data and in addition make decisions basing on the collected data and perform actions basing on this. Wireless sensor networks (WSNs) are rapidly growing and have emerged as one of the important area in mobile computing. Its applications of WSNs are…...

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