| Patent application number | Description | Published |
|---|
| 20090274079 | Radio Frequency (RF) Signal Multiplexing - In a radio frequency (RF) receiver, a receiver RF chain is tuned to a first (e.g., global positioning system (GPS)) channel to permit receipt of a first (e.g., GPS) signal over the first (e.g., GPS) channel on the receiver RF chain during a first time duration. The receiver RF chain is tuned to a second (e.g., cellular page) channel to permit receipt of a second (e.g., cellular page) signal over the second (e.g., cellular page) channel on the receiver RF chain during a second time duration, following the first time duration. The first (e.g., GPS) signal is processed during the first time duration and the second time duration, without any apparent interruption of the first (e.g., GPS) signal during the second time duration. The processing, for example, treats the actual interruption as a temporary, short term fade of the first (e.g., GPS) signal during the second time duration, or provides a bridge signal (e.g., an estimated GPS signal on the receiver RF chain or an actual GPS signal received on another receiver RF chain) during the second time duration. | 11-05-2009 |
| 20090305726 | Position Determination System That Uses A Cellular Communication System - A position determination system and apparatus for utilizing a network of cellular base stations to determine position of a mobile station includes taking a plurality of statistically independent data measurements of the pilot signals from the base stations. Each of the data measurements includes an earliest time of arrival, providing multiple independent measurements for each of the pilot signals. For each cellular base station, a representative measurement is calculated responsive to the independent measurements, which is used to determine position of the mobile station using an AFLT algorithm and/or in conjunction with a GPS algorithm. In some embodiments, the data measurements for each pilot signal further include an RMSE estimate and time of measurement for each time of arrival, and an energy measurement for all resolvable paths. If the mobile station comprises a cell phone, a cell search list and a GPS search list may be provided by a cell base station. | 12-10-2009 |
| 20090316620 | REFERENCE OSCILLATOR MANAGEMENT FOR WIRELESS DEVICES HAVING POSITION DETERMINATION FUNCTIONALITY - A method and device for managing a reference oscillator within a wireless device is presented. The method includes selecting reference oscillator parameters associated with the lowest reference oscillator error, where the selection is based upon reference oscillator parameters derived using different technologies within a wireless device, acquiring a satellite based upon the selected reference parameters, determining the quality of the satellite-based position fix, and updating the reference oscillator parameters based upon the quality of the satellite-based position fix. The wireless device includes a wireless communications system, a satellite positioning system (SPS) receiver, a reference oscillator connected to the wireless communications system and SPS receiver, and a mobile controller connected to the reference oscillator, SPS, and wireless communications system, and a memory connected to the mobile controller, where the memory stores a reference oscillator parameter table and instructions causing the mobile controller to execute the aforementioned method. | 12-24-2009 |
| 20100141470 | SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR REFRESHING DATA - A method performs an update for a first device that consumes information with a known expiration time. The first device operates within a network that accommodates other devices also consuming the information. The method includes setting a time for the first device to refresh the information, the time to refresh being based on a pseudorandom time offset. The method also includes sending a refresh request to a resource for the data during the set time. | 06-10-2010 |
| 20100229217 | SYSTEMS AND METHODS FOR CONTROLLING OPERATION OF A MOBILE STATION - Systems, apparatuses, and methods disclosed herein allow a requesting party to control use of another user's mobile station. In some aspects, a server is configured to communicate with a plurality of remote computer systems and target mobile stations. The server includes a memory device and a processor configured to access data and logic instructions embedded on the memory device. The server authenticates a requesting party accessing the computer server from one of the remote communication systems. The requesting party is not a user of a selected one of the target mobile stations. The server receives selective availability attributes for the selected one of the target mobile stations from the requesting party. The selective availability attributes indicate conditions under which the target mobile station is enabled or disabled to operate, and features that are available on the target mobile station under a plurality of conditions when the target mobile station is enabled. The server further determines when the target mobile station is operational and downloads the selective availability attributes to the target mobile station when the target mobile station is operational. | 09-09-2010 |
| 20100296551 | TIMING SIGNAL FREQUENCY MANAGEMENT METHODS AND APPARATUSES - Methods and apparatus are provided for use in devices operatively enabled to establish timing signal offset data and/or utilize such established offset data. | 11-25-2010 |
| 20110028166 | METHOD AND SYSTEM FOR FEMTO CELL SELF-TIMING AND SELF-LOCATING - Devices and methods are provided for providing self-timing and self-locating in an access point (AP) base station. In one embodiment, the method involves receiving Satellite Positioning System (SPS) signals from a first data source (e.g., plurality of satellites), wherein the SPS signals may include SPS time data, SPS frequency data, and SPS position data. The method may further involve obtaining from a second data source (e.g., cell site, terrestrial navigation station, server, user input interface, etc.) at least one of second time data, second frequency data and second position data, and determining relative reliability of the first and second data sources. | 02-03-2011 |
| 20110065457 | TRANSMITTER POSITION INTEGRITY CHECKING - The subject matter disclosed herein relates to determining whether a reported position of a wireless transmitter is sufficiently accurate in accordance with an accuracy metric based at least in part on a calculated range between an estimated position of a mobile station and the reported position and also based at least in part on one or more measurements taken from one or more signals transmitted by the wireless transmitter. | 03-17-2011 |
| 20110084876 | QUALIFYING COARSE POSITION INJECTION IN POSITION DETERMINATION SYSTEMS - A position determining system (PDS) receiver gathers independent location information from multiple sources. These multiple pieces of location information are analyzed to determine consistency of location. If the location is consistent among the various independently gathered location information, then the location information is injected into the PDS positioning process for more efficient acquisition and positioning. Otherwise, if inconsistency is found, then no location information is injected into the PDS positioning process. | 04-14-2011 |
