Abstract: There is provided a method of reducing energy consumption of network infrastructure nodes in a wireless network, the method comprising: (a) turning a transmitter and a receiver of the network infrastructure node to a power-off state; b) powering-on the transmitter of the network infrastructure node for a limited transmission time frame; c) during the transmission time frame, transmitting a beacon message comprising an identifier of the network infrastructure node, channel characteristics of the network infrastructure node and a powering-on schedule of the receiver of the network infrastructure node, for allowing mobile terminal nodes in the network to communicate with the network infrastructure node, where the mobile terminal nodes are almost continuously in a power-on state; d) powering-on the receiver of the network infrastructure node during a limited reception time frame in accordance with the schedule, for enabling the receiver to receive messages transmitted by the mobile terminal nodes in the network i

Abstract: There is provided a method of reducing energy consumption of tag readers in a wireless network, the method comprising: (a) turning a transmitter and a receiver of the tag reader to a power-off state; b) powering-on the transmitter of the tag reader for a limited transmission time frame; c) during the transmission time frame, transmitting a beacon message comprising an identifier of the tag reader, channel characteristics of the tag reader and a powering-on schedule of the receiver of the tag reader, for allowing tags in the network to communicate with the tag reader, where the tags are almost continuously in a power-on state; d) powering-on the receiver of the tag reader during a limited reception time frame in accordance with the schedule, for enabling the receiver to receive messages transmitted by the tags in the network if required; e) repeating steps a) to d) periodically. There is further provided a battery-powered tag reader which reduces energy consumption.

Abstract: A method and system for the detection, notification and tracking of cargo theft proposes to install, inside cargo to be protected, a tracking device having communication and dead reckoning capabilities. As long as the tracking device senses that it is within a virtual fence generated by an access point, it lays dormant. When the tracking device senses that it is no longer within the virtual fence it activates the dead reckoning capabilities and communicates with a central server to supply dead reckoning data thereto. The central server processes this data and determines the current location of the cargo.

Abstract: A device, system and method for the detection of intrusion using radio frequency (RF) signals are provided. The system comprises at least two devices. The system detects intrusion by measuring the Received Signal Strength (RSS) of a RF signal sent by the first device to the second device via a RF channel. The RF signal receiving device determines if the variation of the current RSS value is due to an intrusion in the RF channel or not an acts appropriately.

Abstract: A method and system for the detection, notification and tracking of cargo theft proposes to install, inside cargo to be protected, a tracking device having communication and dead reckoning capabilities. As long as the tracking device senses that it is within a virtual fence generated by an access point, it lays dormant. When the tracking device senses that it is no longer within the virtual fence it activates the dead reckoning capabilities and communicates with a central server to supply dead reckoning data thereto. The central server processes this data and determines the current location of the cargo.