| 摘要 |
A basestation, for use in a cellular communications network, is adapted to provide a cellular communications service in at least one active cellular communications network by transmitting signals on system downlink channels of the active network and by receiving signals on system uplink channels of the active network. The basestation is also adapted to receive signals on system downlink channels of the active network. Further, the basestation is adapted to receive signals on system downlink channels of at least one additional network, although it is unable to transmit signals on system downlink channels of the additional network. The additional network may operate in accordance with a different cellular standard from the active network, and/or may be operated by a different cellular network operator from the active network. For example, where the active cellular communications network is a UMTS network, the additional network may be a GSM network, such that said basestation is adapted to receive signals on system downlink channels of the GSM network and is unable to transmit signals on system downlink channels of the GSM network. |
