The growing diffusion of wireless sensors and the recent advances in Wireless Sensor Networks (WSNs) open new scenarios where sensors can be rapidly deployed without any existing infrastructure. Such networks are useful in many fields, such as emergency rescue, disaster relief, smart homes systems, patient monitoring, industrial applications, health monitoring, environmental control, military applications, etc. However WSN presents many challenges. These networks are prone to malicious users attack, because any device within the frequency range can get access to the WSN. There is a need for security mechanisms aware of the sensor challenges (low energy, computational resources, memory, etc.). Thus, this work aims to provide a secure WSN by changing the frequency of data transmission. This security approach was tested, and the results shows an interesting decreased of throughput from malicious node when the number of frequency used is increased, that way the WSN will not waste it’s resources treating malicious packets.
展开▼
