Sennheiser Electronic Gmbh & Co Kg

Sennheiser Electronic Se Co. Kg

Maria Dolores Pérez-Guirao

Axel Schmidt

Andreas Stefan Wilzeck

Konstantin Septinus

Gerrit Buhe

Christoph König

Qipeng Cai

Hanwen Cao

A method and a system with which a primary user, in particular a mobile radio operator, can make a part of the radio spectrum range which is reserved exclusively for the mobile radio operator available in localized and/or time-restricted fashion to a local end user who requested the restricted usage authorization of the radio spectrum range using registered credentials at the mobile radio operator. By way of the credentials the mobile radio operator can allow the local end user limited usage of that radio spectrum range in fee-bearing fashion and can bill same. The local user can then use the assigned frequency band in accordance with his own needs. In particular the user can wirelessly transmit signals in the assigned frequency range between end devices to which no credentials are allocated and in that situation use a transmission protocol which is not defined for the mobile radio network.

Method and system for coordinated use of mobile radio frequencies

There is provided a wireless audio transmission system, in particular a wireless microphone system, for wireless audio transmission. The system has at least one wireless microphone unit for detecting audio signals and for wirelessly transmitting the detected audio signals, and a central unit. The central unit has a wireless receiving unit for receiving the wirelessly transmitted audio signals from the wireless microphone units, a pilot tone transmitting unit for transmitting a first pilot tone on a pilot channel, and a pilot tone receiving unit for receiving and processing a second pilot tone signal. The pilot tone signal has information in respect of the wireless transmission between the microphone units and the central unit.

Wireless audio transmission system, particularly a wireless microphone system

Growing community of inventors

Hannover, Germany

Maria Dolores Pérez-Guirao