SYSTEM AND METHOD FOR IMPLEMENTING MULTIPLE HOME LOCATION REGISTERS FOR A SINGLE MOBILE STATION IN A CELLULAR TELECOMMUNICATIONS NETWORK

摘要

In a cellular telecommunication network utilizing home location registers for completion of calls to and from a mobile station (60), a system and method is disclosed for loading and accessing database information relating to the mobile station, and completing calls to the mobile station while roaming in a visited foreign network without incurring long distance charges. The radio telecommunication system includes a mobile station (60) having a mobile subscriber number (MSNB) and a first subscriber number (SNB), a home network (110) having a mobile switching center (MSC) (114) and a first home location register (HLR) (112) which maintains database information relating to the mobile station, and a visited foreign network (120) having a visited mobile switching center (V-MSC) (124) and a second HLR (122). When the mobile station (60) roams into the visited foreign network (120), a second SNB is assigned to the MSNB, and subscriber information is stored in the second HLR (122). When a call is received for the mobile station on the second SNB, the V-MSC (124) accesses the second HLR (122) for subscriber information and completes the call locally to the mobile station.