الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
In recent years, The Internet of Things (IoT) is the most popular technology that is used in many applications. So, when the IoT system is implemented, it is important to reduce the power consumption and increase the lifetime of nodes in the system. Energy efficiency becomes a vital parameter. Many factors affect energy efficiency such as distance between the transmitter (sensor node) and receiver (sink node) and the
number of bits will be sent. Data aggregation plays an urgent role in power saving. In this thesis, an IoT system for a stadium is implemented to monitor the health condition
of football players and compare between three scenarios one of them without using data aggregation and the second with using repeaters and the third with using data aggregation to approve that applying data aggregation in an IoT system will enhance
network lifetime and decrease power consumption due to reducing the packets transmitted by percent depend on the number of aggregators and the number of sensor nodes.