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It is anticipated that wearable wireless sensors in Body Area Network (BAN) will increase the functionality of lifestyle and health care devices to gradually match the needs of society by year 2010 and people will carry their personal Body Area Network. The applications in areas like lifestyle, assisted living, sports, entertainment functionalities, toxic levels in the lungs of a Fire-Fighter, radiation exposure in war zones etc are already being explored. Yet one very exciting, revolutionary and life saving application in the form of Real time stress monitoring of Fighter Pilots through wearable wireless sensors in BAN has not been thought of. The statistics reveal that 40% of total flying accidents in IAF occur due to pilot error, however, so far no scientific study has been undertaken to ascertain whether certain non-action/delayed actions taken by pilots in such accidents were related to stress induced. The current paper proposes the entire workable concept which when implemented will be able to provide some valuable insights of human behavior under high 'g' conditions as well as save lives of pilots.

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Inside a cluster in LEACH based sensor network architecture, data from individual nodes are being populated by individual query or command governed by Cluster-head following TDMA slots. This conventional process can be further minimized with Cluster Energy consumption, Complexity and memory consumption aspects following the proposed architecture where a single inventory command populates all nodal data following the "shortest close-loop energy path" algorithm. The new protocol architecture has been simulated in MATLAB considering 3D domain with some basic consideration of localization and, simulation result with comparison study with some conventional topologies are presented in this paper.

Remote sensing and wake-up is an important research area for future wireless communication system and particularly for wireless sensor network (WSN). Experimental results show that around 75% of the total power consumed from a typical wireless node is attributed to the radio transceiver. In radio transceiver the receiver power is almost equal to transmitter power. As the communication channel frequency increases, the receiver and Low Noise Amplifier power also increases. However this also results in higher communication link-budget which is a desirable factor in conventional Wireless Sensor Networks to get higher inter-node communication radius. To compensate the receiver power consumption, a secondary Low-Power, Low Frequency simplex Radio Frequency (RF) channel is proposed which is used to activate the primary RF communication subsystem. This paper describes an implementation of RF signaling and wake-up functionality in low power embedded active Radio Frequency Identification (RFID) Tag with data-logger functionality.