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Due to their embedding into an unknown environment, wireless sensor networks are susceptible to adverse environmental conditions. A prime example is external interference, typically caused by 802.11, electric devices or co-located sensor networks, which can drastically influence communication. However, radios on sensor nodes provide multiple channels, which can help to alleviate interference problems...
Based on the analysis to the phenomenon and methods of denial-of-sleep attacking in wireless sensor network, a scheme is proposed employing fake schedule switch with RSSI measurement aid. The sensor nodes can reduce and weaken the harm from collision, exhaustion and broadcast attack and on the contrary make the attackers lose their energy quickly so as to die. Simulation results show that at a bit...
We describe an improved version of simple polling protocol employed in a wireless sensor network proposed. Although this simple wireless sensor network works efficiently, it is very limited in computing capability. Simple polling protocol works well in situation where every sensor node shares heavy traffic. However, when a few sensor nodes contribute to the traffic, most of the time slots allocated...
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