| Summary: | 碩士 === 東海大學 === 電機工程學系 === 104 === Recently, wireless sensor networks (WSN) have been widely used in military, healthcare, and scientific environments and their sensors are often powered by batteries. So how to lengthen WSN’s lifetime is an important challenge. One of the solutions is reducing sensors’ energy consumption. Power management in turn is one of effective methods for lowering their consumed energy. But to achieve this, we must take into account all design and communication stages of a WSN. Also, the power management may be out of control when the WSN is now being attacked by hackers. Therefore, in this paper, we proposed a secure energy consumption management scheme, named Secure Power Management (SPM for short) to deal with the energy problem of a WSN and prolong operating time of its sensor nodes as well as coordinators. Most importantly, the SPM is still effective during being attacks. It then efficiently turns WSN nodes into sleeping mode when they are idle and wakes them up when necessary. In this mode, nodes consume less energy. A token based control policy is also developed to manage the power consumption of WSN nodes. Our simulation results show that during malicious attacks, the SPM still effectively reduces power consumption compared with that of the typical power management scheme.
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