| Patent application number | Description | Published |
|---|
| 20090153401 | MOTION DETECTION FOR TRACKING - An apparatus and method for tracking a target wherein a new position fix is taken when the measured movement of the target is more than a predetermined threshold amount or when the position fix has not been updated in a predetermined interval. The apparatus and method minimize energy use and network resources by performing position determination fixes only when needed. | 06-18-2009 |
| 20100090852 | GEOGRAPHICAL BOUNDARY BASED TRACKING - An apparatus, method and system for geographical tracking entry and/or exiting of an asset into and/or out of a defined geographical boundary and reporting the same. Entry and exit tests compare position fixes with various thresholds and parameters to determine if the asset has entered or exited the geographical boundary. Tests are sequenced such that tests having lower levels of complexity (lower order) are performed before tests having higher levels of complexity (higher order). In this way, most position fixes are processed using computations having a lower order of mathematical complexity than conventionally implemented. | 04-15-2010 |
| 20100098135 | METHOD AND APPARATUS FOR AVOIDING INTERFERENCE BETWEEN COEXISTING WIRELESS SYSTEMS - Apparatuses and methods for avoiding interference between wireless systems are described herein. One embodiment of the disclosure provides an apparatus for avoiding interference between at least one transmitter and at least one receiver within at least one wireless device. The apparatus comprises a first processing circuit configured to determine whether one or more bins are affected by interference from a transmitter based on predetermined information. The apparatus further comprises a second processing circuit configured to mitigate the interference from the transmitter by at least one of the transmitter and a receiver if it is determined that the one or more bins are affected | 04-22-2010 |
| 20100250134 | DEAD RECKONING ELEVATION COMPONENT ADJUSTMENT - The subject matter disclosed herein relates to adjusting an elevation component of a estimated location based, at least in part, on sensor-based dead reckoning. | 09-30-2010 |
| 20100284424 | SYSTEM AND METHOD FOR ADAPTING TRANSMIT DATA BLOCK SIZE AND RATE BASED ON QUALITY OF COMMUNICATION LINK - System and method for transmitting data to a remote communication device to achieve desirable transmit data block size and data rate based on measurements of the communication link quality to the remote device. The method entails selecting an initial transmit data rate and power based on an initial measurement of the link quality, and a default size for the transmit data block. The data block is then transmitted to the remote, and an acknowledgement (ACK) message is received from the remote. If the ACK message indicates that the data block was properly received, the size for the next data block to be transmitted is increased. Otherwise, the size for the next data block may be decreased or remain the same. Additionally, the transmit data rate may be increased if the remote properly receives a defined number of consecutive data blocks, or decreased if the remote does not receive a defined number of consecutive data blocks. | 11-11-2010 |
| 20110206146 | CHANNEL ESTIMATION USING REPLICAS ZERO FORCING - Channel estimation for a wireless Orthogonal Frequency Division Multiplexed (OFDM) link having pilots on at least some carriers in at least some symbols may be implemented by performing first and second channel estimation processes. The first channel estimation process uses only frequency domain interpolation of the pilots to obtain a first candidate channel estimate for the OFDM link, and the second channel estimation process uses both time domain interpolation and frequency domain interpolation of the pilots to obtain a second candidate channel estimate for the OFDM link. One of the first and second candidate channel estimates is selected for processing a communication received via the OFDM link. | 08-25-2011 |
| 20110261905 | COMPRESSED SENSING CHANNEL ESTIMATION IN OFDM COMMUNICATION SYSTEMS - Methods and devices for receiving Orthogonal Frequency Domain Multiplexed (OFDM) wireless signals employ compressed sensing-based estimation techniques, exploiting the common sparseness of the wireless channel, to achieve signal reception in the presence of significant Doppler spread. When implemented for an ISDB-T mobile TV standard signal, the compressed sensing channel estimation algorithm enables data reception in Doppler spread conditions beyond the capabilities of conventional channel estimation methods. | 10-27-2011 |
| 20110304776 | METHOD AND APPARATUS FOR ATSC SIGNAL PROCESSING - Embodiment methods and apparatus enable ATSC receiver devices to receive and process ATSC-M/H training sequences in order to improve the reception and decoding of an ATSC service. A processor within the ATSC receiver device may be configured to receive training sequences 1 and 2 of the ATSC-M/H signal. In an embodiment, the ATSC-M/H training sequence 2 may be received by correlating symbols of the two halves of the training sequence 2. If the result of correlating the symbols is greater than or equal to a threshold, the ATSC-M/H training sequence 2 may be received by the ATSC receiver and a counter for the training sequence 1 may start. The ATSC receiver may correlate two consecutive training sequences 1 to perform fine residual frequency error estimation. | 12-15-2011 |
