Disclosed herein is a method useful for target user equipment (UE) sending
a location report. When the target UE is located in a first central
network (CN) of a location service (LCS) system, the target UE reports
the location report to the LCS system. If the target UE does not receive
a location report response from the LCS system, when being located in a
second CN of LCS system, target UE will continue to report the location
report to LCS system. In accordance with one aspect of the disclosed
method, the waste of location service system resource is avoided as well
as the execution efficiency of location service is increased. In
addition, during procedure of change of area event location request, the
consequent processing of request thereof is guaranteed to be normal, so
that execution efficiency of location service is increased. Moreover,
message interaction between the function entities is saved for the
exception cases. Accordingly, the waste of public land mobile
communication network resource caused by generation of excessive useless
messages is avoided.