Patent ID: 6836653
Filing Date: 2004-12-28
Classification: H04B,H04M,H04W

Abstract:
A method for indicating the location of a mobile station in a cellular mobile telecommunication system, comprising the steps of:(a) sending, by a mobile station, a location registration request to a visitor location register (VLR) of a mobile switching center (MSC) through a base station serving an area where the mobile station is located and through a base station controller (BSC); (b) sending the location registration request of the mobile station from the visitor location register (VLR) to a home location register (HLR); (c) receiving a subscriber information included in the home-zone list of the home location register (HLR) in the visitor location register (VLR), wherein the home-zone list includes a location information of a home zone of the mobile station; (d) storing the subscriber information of the mobile station from the home location register (HLR) in the visitor location register (VLR) and informing the mobile station of the receipt of the location registration request; (e) determining whether the mobile station moves between the home zone and a non-home zone based on a determination from the home-zone list in the visitor location register (VLR); (f) requesting, by the visitor location register (VLR), the mobile station to indicate a present location of the mobile station if the mobile station has moved between the home zone and the non-home zone; and, (g) indicating the present location at the request of the visitor location register (VLR) by the mobile station, and requesting the mobile station to display the present location with a string of characters stating â€œHOME ZONEâ€  or â€œNON-HOME ZONEâ€ , wherein the present location information for the home zone comprises: an identification (ID) of a base station servicing the home zone; an identification (ID) of a base station controller (BSC) controlling the base station; an identification (ID) of the mobile switching center (MSC) controlling the base station controller (BSC); and, an identification (ID) of each sector if a service zone of the base station is divided into a plurality of sectors by a plurality of sector antennas.