Nokia Corporation

Nokia Networks Oy

Susanna Kallio

Tuija Helena Hurtta

Serge Haumont

Heikki Juhani Einola

Lauri Kalevi Lahtinen

Kati Marita Vainola

Bo Axerud

A method, system and network element for providing an address transition if a connection point at one end of a connection is changed from a first network node to a second network node of a cellular network is provided. An address information and at least one alternative address information are transmitted in a signaling message from the first network node to the second network node. One of the address information and the alternative address information is selected at the second network node and used for re-establishing the connection towards the other end of the connection. Thereby, the new point of connection is allowed to re-establish the connection towards the other end of the connection, even if it can only communicate using one of the two addresses. Furthermore, signaling messages, e.g. messages relating to charging, lawful interception, and/or customized applications, received from different network nodes can be correlated based on the alternative addresses.

Address transition and message correlation between networks nodes

A method and a wireless telecommunication system of performing network-assisted handover of calls between a serving network and another wireless network that employs communication protocols different from those of the serving network. A message is sent from a mobile station of a user to the serving wireless network, which includes an indication that the mobile station is capable of communicating with the neighboring wireless network. Information relating to the communication characteristics of the neighboring wireless network is also sent from the serving wireless network to the mobile station. Using the information relating to the communication characteristics of the neighboring wireless network, the mobile station receives radio signals from the neighboring wireless network. The quality of the radio signals between the mobile station and the neighboring wireless network is measured. The serving wireless network sends a message to the neighboring wireless network to request a handover of the communication transaction when the quality of the radio signals between the neighboring wireless network and the mobile station meets a predetermined minimum threshold. Then a handover of the communication transaction from the serving wireless network to the neighboring wireless network is executed after the neighboring wireless network has established a communication channel for the mobile station pursuant to the handover request.

Handover between wireless telecommunication networks/systems

Growing community of inventors

Espoo, Finland

Susanna Kallio