| 摘要 |
How to activate a femto cell being in a power save mode? The femto cell continuously receive the uplink signal of mobile terminals in its vicinity on the RACH, e.g. a call set-up, and if the signal quality is better than the one of the macro cell base station or the delay indicates that the mobile terminal is close enough to the femto base station the femto base station initiates a call handover. The femto base station receives the timing on the RACH by receiving the BCH of the macro base station. The mobile terminal may also send a dedicated signal to wake up the femto cell base station. A femtocell for conserving power, which includes a transmitter module configured to be inactive for periods of call inactivity and data inactivity within a corresponding femtocell geographic coverage area, and includes a monitoring device configured to monitor the femtocell geographic coverage area, and further includes a controller module configured to cause a call handover to the femtocell when a cellular handset device is functioning and is located within the femtocell geographic coverage area. The femtocell also being configured to communicate with one or more macrocell base stations, each having a corresponding macrocell, which are configured to facilitate communication between the cellular handset device and a wireless network. |
