AssistNow Offline

Free Offline A-GPS Solution

		Overview: AssistNow Offline is an A-GPS service that provides instant positioning without the need for connectivity at startup and waiting for assistance data to arrive. u-blox provides AlmanacPlus differential almanac correction data which brings Time To First Fix (TTFF) down to seconds and provides high positioning accuracy. The AlmanacPlus data downloaded into the GPS receiver is valid for up to 14 days. Users can update the AlmanacPlus data at their own convenience within the time period that the data is valid for.
Benefits: Free service! Minimal Time-To-First-Fix (TTFF) No connectivity needed at start-up AlmanacPlus data valid for up to 14 days Global coverage Network operator independent Easy to integrate Works with all u-blox 5 GPS chips and GPS modules and with selected ANTARIS 4 GPS products		Applications: Personal mobility OEM and aftermarket vehicle navigation devices Mobile phones, smartphones, PDAs Fleet management and dispatch systems Personal and vehicle security solutions Professional products Personal navigation devicese with instant positioning

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• Aiding data file is downloaded to terminal e.g. via TCP/IP, serial port or memory (SD) card
• Receiver uses serial (SPI) or parallel Flash to store AssistNow Offline data
• No communication between application processor and GPS required at start-up
• Virtually no CPU time and memory required on application processor
• Extremely simple software on application processor

• Aiding data file is downloaded to terminal e.g. via TCP/IP, serial port or memory (SD) card
• Application Processor stores AssistNow Offline Data in its memory, replacing a more costly Flash EPROM
• Receiver uses serial (SPI) or parallel Flash to store AssistNow Offline data
• Some communication between application processor and GPS required at start-up
• Virtually no CPU time and memory required on application processor
• Very simple software on application processor