Abstract
Wireless Sensor Networks (WSNs) are currently used in many application areas including military applications, healthiness related applications, control and tracking applications and atmosphere and locale monitoring applications.How to use Energy saving and QoS of the network. However, sensor nodes represent a major drawback mainly in terms of energy autonomy and therefore of life period, for the batteries have to be too little power. This is the reason why demanding research is being conducted nowadays on how to control sensor energy consumption within a network. For this purpose we use our approach to design energy saving methodology and calculate energy consumption within wireless sensor network for each node wireless sensor networks, according to the packet data rate (PDR), and throughput.PDR is the proportion to the total amount of packets reached the receiver and amount of packet sent by source the quantity of nodes and the distance between them. Sensor networks are constructed to