DefinePK

Abstract

The IEEE 802.15.4 Wireless Sensor Networks (WSNs) are network that are embedded into our environments for the purpose of monitoring the physical or environmental conditions, such as temperature, sound and vibration at various different locations. A WSN is characterized of having low-power, low-cost and autonomous sensor nodes equipped with a radio transceiver or other wireless communications device. Additionally, the WSN is characterized of being self-maintained in case one sensor is down the sensors can find another root to send the data without the help of any human. There are several protocols used in wireless sensor network for data collection and request disseminations. Two protocols: Flooding and convergecast protocols was focus. The behavior of flooding and convergecast protocols in a sensor network is simulated under different assumptions about the number of nodes, transmission power and the distance between nodes. It can be showed that varying the distance between nodes has no effect on the latency and mean number of hops. However, it has been found that the transmission power has an effect on the two protocols with regard to the mean number of hops and latency. As the transmission power increases, the number of hops and latency decrease.