Nokia Telecommunications Oy

Nokia Networks Oy

Nokia Corporation

Hannu-Pekka Salin

Serge Haumont

Tony Hulkkonen

Juha Bäck

Keijo L Palviainen

Teemu Mäkinen

Erkki Antero Koskinen

The present invention relates to a method and an apparatus for performing a location update of a user equipment in a mobile network, wherein it is decided on the basis of the result of a negotiation with an old location register whether to use an identification information obtained from the old location register or to retrieve the identification information from a user database. Accordingly, whenever a fall-back to a protocol version not supporting the required identification information is determined, the identification information is retrieved from the user database, to thereby guarantee that the correct identification information is used in the new location register. The identification information may comprise security or authentication parameters.

Method and apparatus for electing an identification confirmation information

A method and apparatus for implementing call forwarding in a mobile communication system comprising one or more closed user groups. The method comprises detecting conditional or unconditional call forwarding to a call forwarding number in connection with call set-up, checking whether set call forwarding is directed to the voice mail, and carrying out call forwarding in response to the fact that call forwarding is directed to the voice mail, regardless of a possible bar to call forwarding due to interaction between the call forwarding facility and the closed user group. The method and system of the invention allow to eliminate the possible problems caused by the restrictions of the closed user group in connection with call forwarding to the voice mail.

Voice mail service of a closed user group in a mobile communication system

The inventive idea is to set up by parts of forwarded call using services of a closed user group always leg-specifically. Hereby the user group data defined by the subscribers for the leg in question can be used for each leg. The user group data defined by the calling subscriber is used in that leg of the call which is between the calling subscriber and the call forwarding point. User group data defined by the called subscriber who forwarded the call is used between the forwarding point and the subscriber who is the forwarding target.

Call forwarding in a telecommunication system

The present invention relates to a mobile communication system comprising a mobile services switching center and a visitor location register and a home location register, the information on particular subscriber stations being stored therein, and comprising means for transmitting a cancellation message to said visitor location register for removing the subscriber information on a particular subscriber station from the visitor location register. To enable the connections of the mobile station to be disconnected, the visitor location register comprises disconnection means for transmitting a predetermined disconnection message to the mobile services switching center, comprises means for disconnecting an ongoing connection of the mobile station in response to said disconnection message.

Method for disconnecting a connection of a subscriber station

The invention relates to delivery of short messages to mobile stations and particularly to delivery of short messages in mobility-supporting packet radio networks that use a mobile communications network as an access network, to a dual-mode mobile station in a situation where the mobile station is not reachable in the packet radio network. The object of the invention is to minimize unnecessary signalling. The invention is based on the fact that parameters controlling the network elements are inserted into the signalling messages and a flag indicating the state of the mobile station is inserted into the home location register. The method and radio network of the invention, the signalling messages may contain parameters by means of which 1) delivery of a short message through the secondary network is prevented, 2) information on the fact that an attempt was made to reach the mobile station but the attempt was not successful is sent to the node of the secondary network, 3) the node of the secondary network is prevented from informing the home location register of the mobile station of the attach of the mobile station to the network, 4) information is sent to the home location register on the fact that the mobile station cannot be reached through the primary network, and 5) information is sent to the gateway mobile switching center for short message service on the fact that the mobile station can be reached through the primary network even though the short message was delivered through the secondary network.

Delivery of short messages in a packet radio network

Methods for processing an outgoing and an incoming call in a mobile

A method for processing a short message received at a mobile exchange in a cellular radio network, and a mobile exchange in a cellular radio system, including a short message deliver for delivering one short message at a time to a B subscriber; an operation controller for observing the operation of the B subscriber so as to detect the delivery of the short message and to prevent the delivery of another short message when the delivery of the preceding short message is in progress; a memory for storing rejected short messages; and a queue control responsive to the B-subscriber operation controller for reading the rejected short message from the memory so as to initiate the delivery of the short message to the B subscriber when the delivery of the preceding short message is completed.

Growing community of inventors

Vantaa, Finland

Hannu-Pekka Salin