Method and devices for improved location updating in a mobile communication system

Method according to any preceding claim, wherein parameters from the data record in the home location register (HL) are sent in reply to a message from the visitor location register (VL) to send parameters.

Method according to any preceding claim, wherein a decision (36) is performed whether parameters from the data record in the home location register (HL) are requested before a connection is established.

Visitor location register for serving an area in a mobile communication system, said visitor location register (VL) having a memory (MEM), an interface (IO) to receive messages from user equipment located in the area served, an interface (IO) for accessing a home location register (HL) with a data record assigned to the user equipment and a processing system (PS) to detect from received messages that user equipment has entered the area served, to send a location update message (18) to the home location register (HL), the message indicating the detected user equipment and the visitor location register (VL), and to store parameters from the data record for connections between the system and the user equipment in the memory (MEM), characterized in that the processing system (PS) initiates the transmission of parameters from the data record in the home location register (HL) when the establishment of a connection between the system and the user equipment is requested.

Home location register for a mobile communication system with visitor location registers (VL) serving parts of the area covered by the communication system, the home location register (HL) comprising a memory (MEM) for holding at least one data record assigned to a user, the record comprising parameters for the establishment of connections of the system with the user and an identification of the visitor location register (VL) presently serving the user, wherein the home location register (HL) is provided with a processing system (PS) and an interface (10) to copy parameters from the record of a user to the serving visitor location register (VL) and to receive location update messages (18) indicating the identity of the serving visitor location register (VL), characterized in that the processing system (PS) checks location update messages (18) for an indicator whether parameters from the record are requested and returns parameters in a reply to the location update message (18) according to the indicator.

Program unit on a data carrier or loadable into a visitor location register (VL) for a mobile communication system with a home location register (HL), wherein the visitor location register (VL) serves a part of the area covered by the communication system and wherein the home location register (HL) holds at least one data record assigned to a user, the record comprising parameters for connections with the user and an identification of the visitor location register (VL) presently serving the user, and wherein parameters from the record can be copied to the visitor location register (VL) serving the user, wherein said program unit checks whether the establishment of a connection with the user is requested and initiates the sending of parameters from the data record in the home location register (HL) to the serving visitor location register (VL) upon the request.

Program unit on a data carrier or loadable into a home location register (HL) for a mobile communication system with visitor location registers (VL) serving parts of the area covered by the communication system, said home location register (HL) holding at least one data record assigned to a user, the record comprising parameters for connections of the system with the user and an identification of the visitor location register (VL) presently serving the user, wherein parameters from the record can be copied from the home location register (HL) to the serving visitor location register (VL) and location update messages (18) from a visitor location register (VL) indicate the identity of the serving visitor location register (VL), characterized in that the program unit checks whether location update messages (18) comprise an indicator whether parameters from the record are requested and initiates the return of parameters in a reply to the location update message (18) according to the indicator.