Personal communications services (PCS) support mobile terminals (MTs)
which are free to travel within the service coverage area. In order to
effectively locate an MT when a called is initiated, location managem
ent schemes are used to keep track of the locations of the MTs. The cu
rrent approach to location management requires each MT to report its l
ocation to the network periodically. The location information is then
stored in databases. When a call is initiated, the network determines
the current location of the called MT through a database lookup and pa
ging procedure. In this article, a currently available standard for lo
cation management is described. Recent research results on location ma
nagement are surveyed in detail.