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In WirelessSensor Network, the communication generally takes higher energy than other operations like sensing and data processing. So the traffic reduction in communication is one of the most important concern for prolong the life of sensors. This paper presents three traffic reduction techniques based on dominating set. In the first approach base station is dynamically relocate to the sensing area in which heavy packet traffic. The selection of base station depends on various performance metrics such as energy, signal strength and the location of the selected node. The second approach intelligently distributes the burden of broadcasting process by applying the concept of localized domination set based multicast. In the third approach i.e., Dominant Set Pruning (DSP) is used to avoid unnecessary control packet flooding in sensor network. The efficiency of dominant-set-based broadcasting or routing mainly depends on the overhead in constructing the Connected Dominating Set (CDS) and the size of the dominating set. The paper proposes a novel algorithm for determine the CDS with less computation complexity.The performance of the algorithm is evaluated by using simulation. The modified algorithm has a tremendous reduction in traffic than the existing AODV algorithm.

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Prisoners are segregated in different wards. But it is the tendencies of a few bad elements to leave the barracks on the pretext of availing medical services, canteen services and telephone services etc., and going to some other barracks to receive or distribute prohibited articles. To overcome this situation, a system is proposed for the surveillance of the prisoners, using biometric sensors for monitoring purpose. This project overcomes the limitations of the existing systems of correctional facilities. In this proposed method the finger prints of the prisoners are taken as input and the other parameters that apply are the source and destination along with the time difference. Thus, the proposed system will make prisons more secure. This work provides more secure and efficient way to eliminate the wrong traversals and to inform the officials about it when this happens. The biometric sensor along with LED display, the alarm, RF receiver, RF transmitter is integrated with the PIC microcontroller. The fingerprint module takes the input and identifies the prisoner and then displays the details in the LED screen. Source controller RF and the destination RF interact, as soon as the prisoner checks in, the timer starts to function and counts until prisoner reaches. If the prisoner does not reach before the average time taken, then the alarm goes on and the official can know along with the prisoner ID on the screen. Thus the proposed system gives a better monitoring and control over the prisoners.