Nokia

About: Nokia is a company organization based out in Espoo, Finland. It is known for research contribution in the topics: Signal & Mobile station. The organization has 16625 authors who have published 28347 publications receiving 695725 citations. The organization is also known as: Nokia Oyj & Oy Nokia Ab.

Method, and associated apparatus, for effectuating handover of communications in a bluetooth, or other, radio communication system

Abstract: A method, and associated apparatus, facilitates handover of communications with a mobile Bluetooth device operable to communicate packet data with other Bluetooth devices. Handover of communications is effectuated between fixed-infrastructure access points or other mobile Bluetooth devices formed in a scatternet. The device to which communications are to be handed-over becomes a slave to the Bluetooth device with which communications are ongoing, thereby to permit time synchronization thereto.

Method for fabricating a resonator having an acoustic mirror

Abstract: A Thin Film Bulk Acoustic Wave Resonator (FBAR), comprising a top electrode layer, a substrate, an acoustic mirror that is formed atop the substrate, and a piezoelectric layer that is formed between the top electrode layer and the acoustic mirror. The acoustic mirror is comprised of a plurality of stacked layers. One of the stacked layers forms a bottom electrode layer. At least another one of the stacked layers comprises a polymer material. The piezoelectric produces vibrations in response to a voltage being applied between the top electrode and the bottom electrode. The acoustic mirror acoustically isolates these vibrations from the substrate. The polymer material is preferably an electronic grade polymer and has a capability of withstanding a deposition of the piezoelectric layer at an elevated temperature. The layers forming the acoustic mirror which do not comprise the polymer material comprise a high acoustic impedance material such as, by example, tungsten (W). The polymer material can be spun on the substrate during fabrication of the FBAR.

Handover between mobile communication networks

Abstract: The invention relates to a method for handing over a connection between a first (NW1) and a second mobile communication network (NW2) in a wireless terminal (MS1). In the method, at least one data transmission connection is established for the purpose of transmitting information between the wireless terminal (MS1) and one said mobile communication network (NW1, NW2). In the first mobile communication network, the connection type is either connection-oriented (HSCSD) or connection-less (GPRS), and in the second mobile communication network (NW1, NW2), at least two traffic classes with different transmission features are defined and one of them is selected for the data transmission connection of the second mobile communication network (NW1, NW2). In the method, it is also examined what active data transmission connections the wireless terminal (MS1) has to the mobile communication network (NW1, NW2) handing over the connection.

Apparatus and method for flexible switching between device-to-device communication mode and cellular communication mode

Abstract: In accordance with an example embodiment of the present invention, a method is disclosed that comprises receiving a control command to switch from a first communication mode to a second communication mode from a coupled controller; reconfiguring a plurality of protocol entities including at least a first protocol buffer and a second protocol buffer; moving remaining data packets in the first protocol buffer into at least the second protocol buffer; communicating a current data packet sequence number; and forwarding data in the second communication mode.