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RX Networks Adds Glonass Support
New dual constellation Global Reference Network delivers real-time and predicted orbit assistance to improve Location-Based Services that use next generation GPS and GLONASS chipsets.
Rx Networks has announced the commercial availability of its new GPStream GRN Global Reference Network which provides both GPS and GLONASS assistance data to Global Navigation Satellite System (GNSS) chipset vendors, OEM device manufacturers and mobile operators. This assistance data helps improve the mobile user experience with faster and more reliable satellite acquisition, particularly in urban canyons and similarly challenging environments.

The GPStream GRN service, backed with carrier-grade Service Level Availability (SLA), delivers data in a variety of formats, including real-time and the long-term 7-day prediction formats used in extended ephemeris implementations.

“Assisted-GPS, or now more accurately "Assisted-GNSS", is all about improving the user experience by enabling a device to get an accurate GNSS position as quickly and ubiquitously as possible,” said Adrian Stimpson, Senior VP Sales at Rx Networks. “With a new wave of GPS+GLONASS chipsets expected to launch in 2011, we upgraded our GPStream GRN service to seamlessly support both the US and Russian satellite constellations, thereby helping ensure the best possible positioning performance in these new devices.”

The existing real-time GPS assistance data service, well proven and deployed in mobile networks worldwide, provides all GPS data elements in several formats and protocol options, including native support for most Assisted-GPS server vendors including Andrew Corp, Nokia-Siemens Networks, Qualcomm, and Ericsson. The new real-time GLONASS assistance data service adds all the broadcast ephemeris elements of GLONASS, in a RINEX-type file format (updated every 5 minutes) or native protocol format for specific Assisted-GNSS server vendors. The GPStream GRN also provides 7-day predicted orbit and clock predictions for both GPS and GLONASS constellations in standard SP3 file formats updated every 4 hours. These prediction files can be used by GNSS chipset vendors who may still have to support their legacy, server-based and proprietary extended ephemeris solution. However, a growing number of leading OEM device and GNSS chipset vendors prefer to use Rx Networks’ GPStream PGPS product instead. This mobile-based, chipset independent extended ephemeris solution yields fast time to first fix (TTFF) and improved sensitivity, even for devices that have limited or no network connection capabilities.

The GPStream GRN service is built on a highly redundant reference network of dual-mode GNSS receivers deployed in 17 countries so that at least 4 receivers see each satellite at any time. This GPS+GLONASS reference data service is delivered from geo-redundant data centers and is backed by a carrier-grade, 99.999 percent service level availability guarantee.
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