Patent ID: 7962176

Claim:
A base station system comprising an indoor part and an outdoor part, wherein the indoor part includes a RNC interface unit RIU for performing an interface function between Node B and the RNC, and a GPSU and a GPS antenna for providing a clock signal to other units in Node B, wherein, the indoor part further comprises: a central control unit CCU, for performing a main control function of Node B and a function of switching signaling and service data between units of Node B; a digital baseband unit BBU, for performing a processing function of the digital signal at the symbol level and the chip level at the physical layer and for intercommunicating digital baseband signals with a local interface unit; and the local interface unit, for converting the digital baseband signal from the BBU to an interface signal and transmitting the interface signal to a remote interface unit, or for converting an interface signal from the remote interface unit to a digital baseband signal and transmitting the digital baseband signal to the BBU; the outdoor part is a remote RF subsystem RRS, including an antenna for receiving and transmitting an analog RF signal, and further comprises: a remote interface unit, for converting the interface signal from the local interface unit to an analog IF signal and transmitting the analog IF signal to a RF transceiver unit TRU, or for converting an analog IF signal from the TRU to an interface signal and transmitting to the local interface unit; and the RF transceiver unit TRU, for converting the analog IF signal from the remote interface unit to an analog RF signal and transmitting the analog RF signal to the antenna, or for converting an analog RF signal from the antenna to an analog IF signal and transmitting the analog IF signal to the remote interface unit.