Modes of Operation
AGPS has two modes of operation:
- Mobile Station Assisted (MSA) - In MSA mode A-GPS operation, the A-GPS capable device receives acquisition assistance, reference time and other optional assistance data from the A-GPS server. With the help of the above data, the A-GPS device receives signals from the visible satellites and sends the measurements to the A-GPS server. The A-GPS server calculates the position and sends it back to the A-GPS device.
- Mobile Station Based (MSB) - In MSB mode A-GPS operation, the A-GPS device receives ephemeris, reference location, reference time and other optional assistance data from the A-GPS server. With the help of the above data, the A-GPS device receives signals from the visible satellites and calculates the position.
Read more about this topic: Assisted GPS
Famous quotes containing the words modes of, modes and/or operation:
“There are two modes of transport in Los Angeles: car and ambulance. Visitors who wish to remain inconspicuous are advised to choose the latter”
—Fran Lebowitz (b. 1951)
“The essence of belief is the establishment of a habit; and different beliefs are distinguished by the different modes of action to which they give rise.”
—Charles Sanders Peirce (1839–1914)
“It is critical vision alone which can mitigate the unimpeded operation of the automatic.”
—Marshall McLuhan (1911–1980)