Nokia Corporation

Vringo Infrastructure Inc.

Kai Närvänen

Markku Matias Rautiola

Pekka Rissanen

Hannu Honkala

Roy Mickos

Tapio Siik

Petri Uosukainen

Raili Numminen

Timo Hänninen

Tero Rantala

Jari Pekka Rissanen

Petteri Zilliacus

Timo Hanninen

Raili Numminem

A method () for carrying out a security procedure with a mobile station, where a hybrid cellular telecommunication system communicates with a mobile station () and the hybrid cellular telecommunication system communicates with a cellular network (). The method is characterized in that the cellular network carries out the security procedure with the mobile station, the data related to the security procedure is transferred between the cellular network and the mobile station via the hybrid cellular telecommunication system, and the decision of triggering the security procedure of the cellular network is made outside the cellular network (). The invention also relates to a network element () in the hybrid cellular telecommunication system that triggers the security procedure and to a network element () in the cellular network that carries out the security procedure after receiving a triggering signal.

Method and device for carrying out security procedures involving mobile stations in hybrid cellular telecommunication systems

A network for communicating with a plurality of radiotelephones via respective communication channels over timeslots on a carrier, wherein the channels can operate at a first or second data rate such that a timeslot on the carrier can transmit a single communication channel operating at the first data rate or two communication channels operating at the second data rate, the network comprising a controller responsive to a predetermined condition for initiating a change in the data rate of two channels transmitted on separate timeslots from the first data rate to the second data rate.

Communication network

A method for establishing a packet data connection in a telecommunications system which includes an office network, an operator network, and a local area network between them. Data transmission from the office network through the local area network is adapted to a data transmission protocol according to a mobile system. The office network also includes a serving support node, a packet control unit, and a gateway support node, which are arranged to support the packet data protocol of the mobile system. The serving support node, packet control unit, and gateway support node are arranged to have a functional connection with each other and with a radio access gateway. A packet data connection request is made from a mobile station to the office network, and a packet data connection is established from the serving support node and gateway support node to a destination address defined by the link request.

Arranging packet data connections in office system

An access control system for a wireless telecommunications system comprising: a first base station serving a first site and operable as part of a first wireless telecommunications network; a second base station serving a second site and operable as part of a second wireless telecommunications network; the first and second telephone networks being connected together, whereby a call can be connected between the first base station and the second base station via the first wireless telecommunications network and the second wireless telecommunications network; and the access control system comprising: a data link of which use is restricted between the first network and the second network, whereby a call may be connected between the first network and the second network; and a first site link access control unit comprising a database for storing identities of wireless terminals at the second site for permitting calls to such terminals made at the first site to be routed from the first site to the second site over the data link.

System and method for allowing subscribers to make internal calls while roaming to other networks

A method of handing off a mobile station (MS B) from an internal cellular communications network to an external cellular communications network having a network controller, the method comprising: allocating at least one cell of the internal cellular network as a border cell (E); detecting the movement of said mobile station (MS B) into said border cell (E); generating an advance hand-off request in accordance with a prediction algorithm which uses a set of predetermined parameters associated with said mobile station (MS B) and determines when a hand-off is likely to be required; and responsive to said advance hand-off request setting up a communication channel in the external cellular communications network for use by said mobile station (MS B) when an actual hand-off request is made, wherein said external network and said internal network is a packet switched network.

Handover of a mobile station from an internal cellular communication system to an external cellular communication system

An access control system for controlling access by wireless terminals to a wireless telecommunications network, the access control system comprising: a database storing the identities of a set of wireless terminals belonging to the telecommunications network; a configurable store for storing a supplementary access value indicative of whether terminals that do not belong to the telecommunications network may access the network; and an access control unit for receiving an access request message indicating the identity of a wireless terminal and in response to that message accessing the database and/or the store to permit access by the wireless terminal to the wireless telecommunications network if: a. the identity of the wireless terminal is present in the database; or b. the supplementary access value indicates that terminals that do not belong to the telecommunications network may access the network.

Growing community of inventors

Pirkkala, Finland

Kai Närvänen