Abstract: A method and system is provided for determining a location for each of a plurality of units, which is selected from one of multiple sets of locations, which are each estimated based upon different initial location estimates. The selected set of locations includes the set which has the minimum error value, where the error value is based on the aggregate of the differences between the range determined from the estimated locations and the measured range. By using different sets of initial location estimates, there is a greater chance that at least one of the sets of initial location estimates will avoid any local minimums and produce a more accurate estimate of unit locations.

Abstract: A method (400) and a receiving unit (220) for demodulating a multi-path signal are described herein. The receiving unit (220) may be configured to receive the multi-path signal. The receiving unit (220) may include an input buffer controller (305), an input buffer (310), a rake finger (330), and a sum generator (340). The input buffer (310) may be configured to store data samples associated with a plurality of paths of the multi-path signal. The input buffer controller (305) may be configured to time-align the data samples relative to each other, and to delay the data samples. The rake finger (330) may be configured to de-spread and to accumulate the delayed data samples for a sub-correlation length. The sum generator (340) may be configured to combine a plurality of outputs from the rake finger (330). Each of the plurality of outputs corresponds to one of the plurality of paths of the multi-path signal.

Abstract: A notification server (100) is coupled to a database (102). The database (102) includes information relating to a user service and a threshold for notifying the user of the availability of the service. The threshold is based upon a then current location of the user and an availability of the service relative to the then current location of the user. The notification server (100) is operable to generate an alert based upon the user service, the then current location of the user and the threshold and to communicate the alert to the user via a communication interface (104).

Abstract: The present invention provides a method and apparatus for reducing scanning times by eliminating from consideration channels where the measured power is substantially comprised of adjacent channel power. The method and apparatus include measuring the received channel power (302) from neighboring cells, and attempting to acquire or otherwise identifying signals from the channels of the neighboring cells (306) in descending order of a sorted list of received channel power. When a signal from the channel of a neighboring cell is successfully acquired or otherwise identified, an amount of adjacent channel power is determined (310), based upon an expected power profile of the acquired or otherwise identified signal. The determined adjacent channel power is then compared against the power measured for the corresponding channel (312). Where the measured power is substantially comprised of adjacent channel power, the channel is removed from the list of channels to acquire (316).

Abstract: A display circuit for use in a hand held device is provided, which virtually expands the image displayed. The display circuit includes a display, a memory, a motion sensor, and a controller. The display has a predetermined size, and the memory has stored therein an image, which has an image size, that is larger than the size of the display. The motion sensor detects the movement of the hand held device and the corresponding movement of the display. The controller, which is coupled to the motion sensor, via prestored instructions, determines the current position of the hand held device and displays a portion of the image on the display, corresponding to the present position of the device. As the hand held device moves, the image being displayed on the display is panned an amount, which matches the movement of the hand held device.

Abstract: The present invention provides a communication controller and a method for maintaining a communication connection during a cell reselection. The communication connection is maintained by changing between a first operating mode, such as a packet data mode, which does not support the maintenance of a communication connection throughout a cell reselection, and a second operating mode, such as a circuit switched mode, which does support maintenance of a communication connection during a handover. Use of a virtual mobile switching center in the base station subsystem facilitates the conversion and routing of circuit switched data, transmitted between the mobile subscriber and the base transceiver station, to the packet data network while in a circuit switched mode.

Abstract: The present invention provides a method for managing in a mobile subscriber the traffic flow of a communication connection during a cell reselection. The method includes communicating via a communication connection with a first cell, and monitoring communication conditions, while communicating with the first cell. An approximate time is then determined, when conditions associated with the flow of communication via the communication connection with the first cell is consistent with transferring the flow of communication to a communication connection with a second cell. The mobile subscriber then establishes a communication connection with the second cell, while maintaining the communication connection with the first cell.

Abstract: A wireless communications device (100), after determining it can not locally satisfy a request for network data (201), sends a search query or request for data to a proximal device that has a network cache function (202). The proximal device searches for the requested data (203) and if the data is found, then the data is sent to the requesting wireless communications device from the proximal device (206). The data request is sent over a wide area network (204), for example, the Internet, if the proximal device does not have the requested data stored in a memory on the proximal device (204). The wireless communications device stores the data for subsequent use and, if necessary, subsequent provision to a proximal device.