Method for indoor operation of a wireless telecommunication device

A method for operation of a wireless telecommunication device that comprises at least one base station and at least one mobile part, comprising the steps of:

• measuring momentary reception power in a receiver of the mobile part and communicating a value of the reception power to the base station for control of transmission power;
• determining a ratio of reception power to noise power (Eb/N0) at predetermined time intervals in the receiver of the mobile part;
• comparing the respectively obtained ratio value to a rated value and, dependent on a result, transmitting one signalling bit (e(k)) per data frame (k) from the mobile part to the base station;
• and
• providing a calculation of the current transmission power (S(k)) with adaptive incrementation control on the basis of a previous transmission power value (S(k−1)) plus a product of a correction value (Δ(k)) determining the incrementation and a default value ({overscore (e)}(k)) determined from the signalling bit (e(k)) in the base station according to the following relationship:
• S(k)=S(k−1)+Δ(k)·{overscore (e)}(k) k=1,2,3, . . .
• with
• {overscore (e)}(k)=2·e(k)−1
• and
• Δ(k)=Δ(k−1)K[{overscore (e)}(k)·{overscore (e)}(k−1)]
• where
• S(k)=transmission power for frame No. k (in dB)
• Δ(k)=correction value for the transmission power for frame No. k (incrementation)
• K=correction constant for the adaptive incrementation correction
• e(k)=signalling bit from the receiver for frame No. k, e(k)ε{0,1}
• {overscore (e)}(k)=converted signalling bit from the receiver for frame No. k, e(k)ε{−1,1} apply.