Apparatus and method for ultra-fast gnss initial positioning scheme with peer assistance, and recording medium thereof

A method of acquiring an ultra-fast global navigation satellite systems (GNSS) initial position with peer assistance, the method comprising:

• at a slave terminal, receiving assistance generated using at least one of relative frequency error obtained by a master terminal or the slave terminal or a distance from the master terminal to the slave terminal;
• at the slave terminal, searching for a Global Positioning System (GPS) satellite signal based on the assistance;
• computing a pseudorange using the result of searching for the GPS satellite signal;
• computing the position of the slave terminal using the assistance and the pseudorange;
• and
• searching for and tracking the GPS satellite signal based on the computed position.

An apparatus for acquiring an ultra-fast global navigation satellite systems (GNSS) initial position with peer assistance, the apparatus comprising:

• a communication unit configured to receive assistance generated by a master terminal;
• a computation processor configured to compute a pseudorange using a result of searching for a Global Positioning System (GPS) satellite signal by a GPS receiver and compute the position of a slave terminal using the assistance and the pseudorange;
• and
• the GPS receiver configured to search for the GPS satellite signal based on the assistance and search for and track the GPS satellite signal based on the position of the slave terminal,
• wherein the assistance is generated using at least one of frequency error obtained by the master terminal or a distance from the master terminal to the slave terminal.

An apparatus for acquiring an ultra-fast global navigation satellite systems (GNSS) initial position with peer assistance, the apparatus comprising:

• a master terminal which successfully performs Global Positioning System (GPS) position measurement;
• and
• a slave terminal which receives assistance generated by the master terminal using a communication unit at a time when a GPS receiver starts up,
• wherein the slave terminal includes:
• a computation processor configured to compute a pseudorange using a result of searching for a GPS satellite signal by the GPS receiver and compute the position of the slave terminal using the assistance and the pseudorange;
• and
• the GPS receiver configured to search for the GPS satellite signal based on the assistance and search for and track the GPS satellite signal based on the position of the slave terminal, and
• wherein the assistance is generated using at least one of frequency error obtained by the master terminal or the slave terminal or a distance from the master terminal to the slave terminal.