الفهرس 
Motivation and Problem FormulationOnly 14 pages are availabe for public view
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Abstract
Wireless Sensor Network (WSN) is a collection of many sensor nodes, which are deployed in order to monitor a physical quantity in an area called a measurement field. The measured physical quantity may be temperature, humidity, brightness level, and much more. The role of a sensor node is the measurement of the physical quantity and processing the measurement data. Moreover, it can transmit the measurement data to other sensors in the network or to a remote centralized node where it can be further processed. The measurement data, picked up from the measurement field, can be collected at a base station where it can be further processed and saved. A system operator can use the saved measurement data in order to control the measurement system. In addition, it can be used in a decision making criterion [1-5].
Nowadays, WSNs’ implementation is based on embedded system technologies especially the Microcontrollers. This implementation can reduce the cost, the architecture, and the maintenance of the system. When an embedded system is the backbone of a WSN implementation, this WSN can be called an embedded one [3].
There are a lot of embedded WSNs, designed especially, in order to perform certain measurement procedures. These procedures include; the measurement of temperature, the measurement of humidity, the measurement of noise levels, the measurement of gas levels, and much more. These systems can measure the physical quantity. Then, the measurement data can be sent to the other sensors in the same network or to a remote centralized node. A sensor may be a master node at a certain instant and it may be a slave node at another instant.