Abstract:
PROBLEM TO BE SOLVED: To provide a parameter estimator for estimating ≥1 parameters related to a signal through a correlation analysis using a dynamically variable integration time. SOLUTION: The parameter estimator for estimating ≥1 parameters from a correlation function derived from a signal using a dynamically variable integration time is described. The parameter estimator is employed in a subscriber station to estimate the time of arrival of ≥1 base stations or sector pilot signals in a wireless communication system. This information is utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To allow a requesting party to control use of another user's mobile station in selective operation of a mobile station.SOLUTION: A server can communicate with a plurality of remote computer systems and target mobile stations, and authenticates a requesting party accessing a computer server from one of remote communication systems. The server also receives availability attributes for a selected one of the target mobile stations from the requesting party, where the availability attributes indicate conditions under which the target mobile station is enabled or disabled to operate and also indicate 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.
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that location information obtained by a receiver from an external source may not always be reliable.SOLUTION: A position determining system (PDS) receiver collects location information independent from a plurality of sources. The plurality of sources is analyzed to determine consistency of a location. If the location is consistent among the various independently collected location information, the location information is injected into a PDS positioning process for more efficient acquisition and positioning. Otherwise, if inconsistency is found, no location information is injected into the PDS positioning process.
Abstract:
A wireless remote unit performs SPS acquisition interleaved with receiving paging information over a wireless slotted paging channel and receiving data packets over a wireless data communication system. The remote unit tunes to a pilot channel, synchronizes to an internal clock of the wireless remote unit with a pilot signal transmitted over the pilot channel; and starts a search for SPS satellites after completing synchronization with the internal clock.
Abstract:
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.
Abstract:
A wireless remote unit performs SPS acquisition interleaved with receiving paging information over a wireless slotted paging channel and receiving data packets over a wireless data communication system. The remote unit tunes to a pilot channel, synchronizes to an internal clock of the wireless remote unit with a pilot signal transmitted over the pilot channel; and starts a search for SPS satellites after completing synchronization with the internal clock.