AssistNow

u-blox A-GNSS services                                     

Achieve premium performance in challenging IoT environments

  • Shortest time-to-first-fix in urban canyons or under other weak GNSS signal conditions
  • Maximum fix probability in adverse or challenging environments
  • Minimize power consumption by 90% to get a first position fix
  • Free basic package and optional add-on for best position accuracy
  • Simplified testing and design with u-center 2 software and evaluation kits
services

Product variants

AssistNow

Assisted GNSS (A-GNSS) 

Fast, Reliable Positioning with Minimal Power Use

GNSS devices often struggle with long startup times and high power drain—especially in urban areas or when signals are weak. AssistNow solves this by delivering satellite orbital data directly to the GNSS receiver over the internet, enabling near-instant position fixes even under poor signal conditions. This reduces time-to-first-fix (TTFF), improves reliability, and extends battery life—critical for compact, energy-constrained IoT devices that need to operate for months or years without intervention.

Designed for Real-World Conditions

Whether your device is tracking vehicles, people, or pets, it needs to perform reliably across varied environments—including dense cities and indoor-to-outdoor transitions. AssistNow ensures your device gets the best possible fix, with options like free Predictive Orbits or premium Live Orbits to meet accuracy and energy needs. Developers can easily test performance with u-center 2, our powerful Windows tool for GNSS configuration and evaluation.

Related links
Service description and price
Documentation & resources

AssistNow Predictive Orbits

With AssistNow Predictive Orbits, users download u-blox's orbit prediction data and almanac of the GNSS satellites from the Internet at their convenience using HTTPS protocol. The data can either be stored in the GNSS receiver’s Flash EPROM (if available) or in the memory of the application processor. 

  • Supports GPS, Galileo, GLONASS, and BeiDou
  • Minimize the battery consumption by reducing the time to position fix by up to 90%
  • Get a reliable position fix even with weak signal or partial sky visibility

AssistNow Live Orbits

With AssistNow Live Orbits, an internet-connected device downloads GNSS assistance data every 2-4 hours. The service works on all standard mobile communication networks and no special arrangements with mobile network operators are needed.

  • Supports GPS, Galileo, GLONASS, BeiDou and QZSS
  • Improves the time to position fix by more than 95%
  • Improves position accuracy for the most demanding IoT application, even with weak GNSS signal

You might also be interested in