| 摘要 |
A method of operating a cellular telecommunications network base station repeater for a mobile terminal in a cellular telecommunications network having a power control function which tends cause, during an active communication session, mobile terminal uplink transmit power to decrease in response to an increase in signal strength of the uplink signal received at the network, the method including (A) increasing the gain of the repeater (at 202, Fig. 5) in response to an increase in the uplink signal received at the repeater above a threshold (ThI) for a time interval (Tl), and (B) subsequently decreasing the gain of the repeater (at 204, 206, Fig. 5) until the measured power in the uplink signal received at the repeater exceeds a threshold (ThI) for a time interval (Tl). Due to the power control function, increasing the gain of the repeater in step (A) causes the transmit power of the mobile terminal, and hence the uplink signal received at the repeater, to decrease. Again, due to the power control function, decreasing the gain of the repeater in step (B) causes the transmit power of the mobile terminal, and hence the uplink signal received at the repeater, to increase. If the threshold in step (B) is not exceeded this is indicative of the communication no longer being active, and the repeater will eventually deactivate (gain = 0). The repeater is therefore not active for prolonged periods when it is not required. |
