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Nayef
Nayef Alsindi, Hammad Town BH
| Patent application number | Description | Published |
|---|---|---|
| 20110074569 | Method and Network for Determining Positions of Wireless Nodes While Minimizing Propagation of Positioning Errors - A wireless sensor network includes an initial set of anchors at known locations, and a set of sensors at unknown locations. Ranges, from each sensor to at least three of the anchors, determine a position, an anchor ranging weight, and an anchor position weight. For each anchor, the anchor ranging weight and the anchor position weight form a combined weight. A weighted least square (WLS) function for the positions and the combined weights is minimized to determine a position of the sensor, and a sensor position weight. The sensor is identified as being a member of a set of candidate anchor nodes, and the candidate anchor node with a largest sensor position weight is selected to be transformed to another anchor to minimize propagation of errors in the positions of the set of sensors. | 03-31-2011 |
Nayef Alsindi, Malden, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20100203839 | Method for Estimating Condition of Wireless Channels - A method measures a time from transmitting a ranging signal to receiving the ranging signal via a channel of a wireless network, and a received signal strength (RSS) of the ranging signal. A distance is estimated based on the time, and a path loss based on the RSS. Probabilities of conditions of the channel are estimated based on the distance and the path loss, wherein the condition is in one of line-of-sight (LOS), or non-LOS (NLOS). | 08-12-2010 |
Nayef Al-Sindi, Malden, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20080232281 | Precise node localization in sensor ad-hoc networks - Methods and systems for configuring ad-hoc networks, especially a self-configuring wireless sensor networks, are described. The network has an initial number of anchors with known positions that broadcast a signal. The signals are received by distributed nodes whose position is not yet known. The nodes rank the received signal based on a Quality of Link (QoL; received signal strength) and compute a Quality of position Estimate (QoE) for the node. The node with the best QoE is elevated to anchor. This process gradually increases the number of available anchors in the network and hence the position accuracy for additional nodes. The system can be used for geolocation of soldiers in the indoor combat, tracking the location of firefighter and other emergency personnel in rescue missions, etc. | 09-25-2008 |
Nayef Mendahawi, Kitchener CA
| Patent application number | Description | Published |
|---|---|---|
| 20110111726 | LOCATION DETERMINATION FOR MOBILE DEVICES IN EMERGENCY SITUATIONS - An emergency locator component for a mobile communication device enables the mobile communication device to obtain location information from other neighbouring mobile devices in the event that the mobile communication device is unable to determine its own location. The mobile communication device employs a short-range radiofrequency transceiver to broadcast a request for location information to the neighbouring mobile devices. A response containing location information may be received from another mobile device equipped with a similar emergency locator component. Accordingly, this technology enables mobile devices to exchange location information by setting up an ad-hoc network. The location information can be included, for example, in an emergency phone call to an emergency services call center. | 05-12-2011 |