Patent ID: 7684435
Filing Date: 2010-03-23
Classification: H04W

Abstract:
1. A base station system for mobile communication between a mobile terminal and a base station controller connected to a mobile exchange network, said base station system comprising: a digital modem unit for receiving a signal to be transmitted to said mobile terminal from said base station controller, framing the received signal according to a frame format for transmission, said frame format being different from an Ethernet specified data format, said frame format being a predetermined remote Radio Frequency (RF) unit frame set to be in series, said digital modem unit transmitting a plurality of said remote RF unit frames in series over an Ethernet using twisted pair cable; at least one remote RF unit hub receiving said remote RF unit frames transmitted by said digital modem unit and distributing the received remote RF unit frames to a plurality of remote RF units via the Ethernet using twisted pair cable; and said plurality of remote RF units producing a deframed signal by deframing the remote RF unit frames received from the remote RF unit hub, modulating the deframed signal to an RF signal, and transmitting the RF signal to the mobile terminal, said plurality of remote RF units receiving an RF signal transmitted by said mobile terminal, each one of said remote RF unit converting the received RF signal into an intermediate frequency (IF) signal, framing said IF signal according to a frame format for transmission to form a corresponding remote RF unit frame and transmitting the corresponding remote RF unit frame to said at least one remote RF unit hub via the Ethernet using twisted pair cable, said remote RF unit hub multiplexing each of said corresponding remote RF unit frames transmitted by said remote RF units and transmitting a plurality of said remote RF unit frames in series over the Ethernet using twisted pair cable to said digital modem unit, and said digital modem unit producing a deframed signal by deframing the remote RF unit frames received from the remote RF unit hub and transmitting the deframed signal to the base station controller.