Koninklijke Philips Corporation N.v.

U.S. Philips Corporation

Philips Intellectual Property & Standards Gmbh

Josef Wasel

Christoph Herrmann

Steffen Hauptmann

Christoph Hermann

Martin Elixmann

Thomas Meuser

Raschid Karabek

Ralf Gunther

Jesus-Manuel Duque-Antón

Ralf Günther

Herrmann Wasel

The invention relates to a wireless network comprising a radio network controller and a plurality of assigned terminals which are provided for coding certain data to be transmitted over traffic and control channels and which are provided for changing the respective key necessary for the coding at certain instants. The radio network controller sends a message about a change of the key coded with an old cipher key to a terminal. The terminal responds with a message coded with a new cipher key as an acknowledgement for the new cipher key.

Wireless network with a cipher key change procedure

A wireless network includes a radio network controller and a plurality of terminals which are provided for transmitting useful data over logic channels which have different priorities, which are mapped onto exactly one transport channel, respectively. The data transmission over a plurality of combined (multiplexed) transport channels is determined by transport format combinations. The respective most favorable transport format combination is selected at the beginning of a radio frame, given the packet data units waiting in the buffers of the logic channels. Further, the logic channels are sorted while their priorities, their buffer occupancy and the transmission time interval of the associated transport channel are taken into account.

Wireless network with a selection of transport format combinations

The invention relates to a wireless network comprising a radio network controller () and a plurality of assigned terminals (to) for exchanging useful data and control data, which terminals respectively have a buffer for buffering data packets to be transmitted to the radio network controller () via a contention channel, and a measuring device for measuring the occupancy level of at least one buffer. A terminal (to) is provided for transmitting a signaling sequence at a start time respectively predefined by the radio network controller () when an occupancy threshold of a buffer or various buffers is exceeded. The radio network controller () includes a device for correlating a signaling sequence sent by a terminal (to) and for detecting the pulse developed from a received and correlated signaling sequence. After a signaling sequence assigned to a terminal (to) has been detected, the radio network controller () sends an indication to the terminal (to) that the data packets are further transmitted over a channel assigned only to the terminal (to).

Wireless network with capacity measurement

A wireless network employing a radio network controller and a plurality of assigned terminals which are provided for coding certain data to be transmitted over traffic and control channels and which are provided for changing the respective key necessary for the coding at certain instants. The radio network controller sends a message about a change of the key coded with an old cipher key to a terminal The terminal responds with a message coded with a new cipher key as an acknowledgement for the new cipher key.

The invention relates to a communication system which operates in the asynchronous transfer mode (ATM) and which comprises several nodes which form a network and are partly coupled to one another and to terminals, and which each comprise a switch and a control software at least for controlling the relevant coupling field and for the signaling. At least one object of the control software contains detection points in certain states. An object for event handling of the control software is provided for further processing when a detection point is reached. The object for event handling receives data via a special channel from at least one terminal or from another node.

Communications system with special channel

A communication system and, method are therefor, are provided. The system includes a control circuit which includes a message-based operating system and application software. The system also includes a device and/or software for exchanging/replacing application software. When a portion of the application software is to be exchanged, an old software component to be exchanged carries out a state transfer, stops at a certain point, and directs available messages to a new software component. The software components include an application thread and an exchange thread. The old software component gathers its state after the application thread has stopped at an exchange point. The exchange thread then transmits the state through an exchange port to the new software component.

System for exchanging software processes during execution using threads

A communication system with a control circuit is disclosed. The circuit includes an operating system for exchanging messages and user software, and a device for exchanging software. For a software component to be exchanged in a few milliseconds, a newly loaded software component, corresponding to a successor component, obtains states and messages from a service port of a stopped software component that is to be replaced, corresponding to a predecessor component. The successor component is restarted with the transferred states and messages.

Growing community of inventors

Bedburg, Germany

Josef Wasel