Method for indoor operation of a wireless telecommunication device

The invention is directed to a method for indoor operation of a wireless telecommunication device that comprises at least one base station and at least one mobile part, whereby the momentary reception power is measured in the receiver of the mobile part and the reception power value is communicated to the base station for control of the transmission power. In a method for indoor operation of a wireless telecommunication device that comprises at least one base station and at least one mobile part, the momentary reception power is measured in the receiver of the mobile part and the reception power value is communicated to the base station for the control of the transmission power. The ratio of reception power to noise power is determined at predetermined time intervals in the receiver of the mobile part. The respectively obtained ratio value is compared to a rated value and, dependent on the result, one signalling bit per data frame is transmitted from the mobile part to the base station. A calculation of the current or updated transmission power with adaptive incrementation control is then undertaken in the base station. The calculation of a current transmission power value thereby occurs on the basis of the previous transmission power value plus a product of a correction value determining the incrementation and a default value determined from the signalling bit.