Technology Partnership Optimizes GPS Performance

Sep 15, 2008 10:27 AM

Combining their respective eGPS and GPStream technologies, CSR and Rx Networks Inc. have created a joint solution that optimally combines GPS fine time and frequency aiding with synthetic assistance. The result is mobile positioning performance that exceeds standard Assisted-GPS in unsynchronized GSM and W-CDMA networks or in synchronized CDMA networks, according to the companies.

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Using this combined solution, fine time, frequency aiding, and ephemeris assistance are all generated locally in the device and available at all times without the need for real-time communication with a server. This eliminates up to 15 s of network latency in mobile handset applications while remaining fully compliant with A-GPS industry standards such as SUPL 1.0. Both CSR and Rx Networks operate carrier-grade service delivery infrastructures through which Rx Networks’ GPStream extended ephemeris technologies may be delivered.

GPStream PGPS and SAGPS produce continuous satellite predictions while eGPS provides a locally generated source of fine time and frequency aiding. Together, these technologies significantly reduce time to fix and increase GPS sensitivity. This helps maintain optimal GPS performance, even outside of network coverage when time to fix is paramount.