VAMPIRE DETECTION IN DATA AGGREGATION PROCESS FOR WSN

Wireless sensor networks have emerged as a new information-gathering paradigm in a wide range of applications, such as medical treatment, battlefield surveillance, emergency response, etc. This paper proposes a new data-gathering mechanism for large-scale wireless sensor networks by introducing mobility into the network. A mobile data collector, for convenience called an M-collector, could be a mobile robot or a vehicle equipped with a powerful transceiver and battery, working like a mobile base station and gathering data while moving through the field. An M-collector starts the data-gathering tour periodically from the static data sink, polls each sensor while traversing its transmission range, then directly collects data from the sensor in single-hop communications, and finally transports the data to the static sink. Deployment of sensor network in hostile environment makes it mainly vulnerable to battery drainage . The motivation of a large portion of research efforts has been to maximize the network lifetime, where the lifetime of network is measured from the instant of deployment to the point when one of the nodes has exhausted its limited power source and becomes in- operational commonly referred as first node failure. But there is a class of resource consumption attack called vampire attack which permanently disables the whole network by quickly draining nodes battery. Forwarding as well as discovery phase of the protocol are considered to avoid an attack. Discovery phase is considered to avoid vampire attack.