A method, apparatus and system for time management in a position-location
system is described. The method may include (i) obtaining, at a
global-navigation-satellite-system receiver while being served by a first
node of a wireless network a first time base, a relative-time difference,
and a third time base; and forming a time relation as a function of the
first time base, relative-time difference ("RTD") and third time base.
The first time base is associated with the first node, and may be, for
example, a time base associated with an air interface for communicating
with the first node. The RTD may be a difference between the first time
base and a second time base associated with a second node of the wireless
network. The third time base is associated with a constellation of
satellites, and may be, for example, an absolute time associated with the
constellation of satellites. The method may include using knowledge of a
GNSS time to enhance sensitivity or time to first position of a GNSS
receiver.