The present invention is directed to a method of asset location. Location data is received from a cellular transmitter associated with a selected asset, which location data includes data representative of a cellular receiver with which direct communication with the cellular transmitter is made. The location data is then communicated to a tracking service system, which tracking service system includes a database representative of geographic locations associated with a plurality of cellular receivers. The database is then queried with received location data so as to generate geographic tracking data associated with a location of the cellular receiver, the geographic tracking data including display data adapted to generate a map image including a representative of a location of the selected asset. The geographic tracking data is then communicated to an associated security agency so as to allow for viewing of an image generated in accordance with the display data and at least one of tracking and interception of the selected asset.

Method and system for providing tracking services to locate an asset

The present invention generally to a multimode terminal (10) including a wireless local area network (WLAN) system (20) and a Bluetooth system (30) that avoids radio interference between the two systems by collaborative coexistence methods that include time -sharing, combined frequency and time -sharing, and forward-looking combined frequency and time-sharing between the WLAN system and the Bluetooth system. The coexistent multimode terminal and the method of coexistence provide WLAN transmissions/receptions that are not impacted when there is no Bluetooth traffic, Bluetooth transmissions/receptions that are not impacted when there is no WLAN traffic, Bluetooth and WLAN transmissions/ receptions that are provided fair access to the medium when both Bluetooth and WLAN traffic are present, and high priority Bluetooth traffic, for example, voice traffic, that has priority over non-high priority WLAN traffic.

Coexistent bluetooth and wireless local area networks in a multimode terminal and method thereof

A satellite radiotelephone system includes a space-based component, a plurality of ancillary terrestrial components, and a plurality of radiotelephones. The space-based component is configured to provide wireless radiotelephone communications using satellite radiotelephone frequencies. The plurality of ancillary terrestrial components include a plurality of ancillary terrestrial component antennas configured to provide wireless radiotelephone communications using at least one of the satellite radiotelephone frequencies in a radiation pattern that increases radiation below the horizon compared to above the horizon. The plurality of radiotelephones are configured to communicate with the space-based component and with the plurality of ancillary terrestrial components. Each radiotelephone also includes a GPS signal processor and a GPS mode filter that is configured to suppress energy at (1575.42−Δ) MHz, where 0<Δ≦16.42 MHz. Related radiotelephones and methods are also discussed.

Filters for combined radiotelephone/GPS terminals

Generic SATPS receivers and methods for configuring generic SATPS receivers that include a plurality of outputs are provided. These configurable SATPS receivers are adapted to be utilized in at least one of a plurality of particular SATPS receiver applications, and can also include a plurality of input paths, and a means for generating selected ones of the plurality of possible outputs. Selected ones of the plurality of outputs are enabled/disabled based on at least one requirement of the particular receiver application to configure or program the generic SATPS receiver to function as a SATPS receiver used for a particular SATPS receiver application or operating environment. The selected ones of the plurality of outputs can be defined by and can be those utilized by the particular SATPS receiver application or operating environment. Thus, SATPS receivers are provided that can be used in multiple applications, that can accept multiple types of assistance data, and that have multiple types of outputs depending on the application and/or desires of the user. The SATPS receiver can be implemented in SATPS systems that include at least one satellite that provides SATPS information, a generic SATPS receiver, and a remote computer.

Generic satellite positioning system receivers with selectable inputs and outputs

The present invention provides a system for providing simultaneous operation of disparate wireless telecommunication technologies within a single device (102). The device comprises a plurality of antennas (112, 114). The system provides an antenna switching function (116) communicatively coupled to the plurality of antennas. A first wireless telecommunications function (104) is communicatively coupled to the antenna switching function, as is a second wireless telecommunications function (106). The system provides an arbitration function (118) communicatively coupled to the antenna switching function and the first and second wireless telecommunications functions. A defined prioritization scheme is provided. The arbitration function operates to control access to the plurality of antennas by the first and second wireless telecommunications functions according to the defined prioritization scheme.

System for operational coexistence of wireless communication technologies

This novel mobile CDMA station incorporates the global positioning system (GPS). Two modes of operation are possible. One, during GPS operation, there is no transmission or reception of CDMA services. Two, simultaneous CDMA transmissions and reception of GPS are provided. When the mobile receiver is in the CDMA mode, a signal path selector selects the CDMA RF section and the GPS RF section is powered down. During GPS operation, the GPS RF section is selected and the CDMA section is powered down. When CDMA operation is compared with GPS, the average current draw can be less, as the system swaps between the RF sections. The GPS RF section may accept an antenna input from a multi-band antenna network or a separate GPS antenna. The GPS signal is propagated through the existing CDMA channel select filter, having a 1.23 MHz bandwidth and is processed in a base-band signal processor.

Combined GPS and CDMA in a mobile transceiver

PROBLEM TO BE SOLVED: To integrate a global positioning system(GPS) to a mobile communication station adopting a code division multiple access(CDMA) system SOLUTION: The mobile communication station is provided with a housing, a CDMA antenna 1 in the inside of the housing, a GPS reception antenna 11 placed in the inside of the housing, a duplexer 2 connected to the CDMA antenna 1, a GPS section connected to the GPS reception antenna 11, a CDMA section connected to the duplexer 2, a signal path selector 15 connected to the GPS section and the CDMA section, respectively, and having one output, a channel selection filter 10 connected to the signal path selector 15 and having one output, and a digital signal processor that receives a signal supplied from an output of the channel selection filter 10 COPYRIGHT: (C)2002,JPO

Raymond Jensen Hasler

Papers

Combined GPS and CDMA in a mobile transceiver

Cdma mobile station