Patent ID: 8000649

Claim:
An apparatus serving as an indoor communications wireless distribution system to communicate with wireless communications devices located within an internal space of a structure, the apparatus comprising: a radio base station or a repeater device comprising an external antenna and a bidirectional amplifier; at least one internally installed antenna device adapted to receive and transmit via the radio base station or repeater device; a central control unit interfacing between the radio base station or repeater and the at least one internally installed antenna device for detecting and reducing interference within the indoor wireless network; at least one antenna attenuation control unit coupled to a respective at least one internally installed antenna device for interfacing between the at least one internally installed antenna device and the central control unit, and for controlling the attenuation of the at least one internally installed antenna device; wherein said central control unit is adapted to identify interference originating from the at least one internally installed antenna device, and to instruct the coupled antenna attenuation control unit to attenuate transmissions from the at least one internally installed antenna device causing the interference; and wherein the at least one antenna attenuation control unit further comprises: a bias tee or a DC Inserter comprising a capacitor and choke for receiving a signal and associated at least one control command embedded in the signal from the central control unit through a signal path and for further separating a DC power component from an RF component of the signal and feeding the power component to a power supply unit; a coupler for sampling the RF component without attenuating the signal; a band pass filter for attenuating the frequency range of the RF component while maintaining the frequency range of the at least one control command; a decoder for decoding the at least one control commands and feeding the gain controller with the at least one control command; a gain controller for controlling the operation of the RF attenuator, and; an RF attenuator for feeding the RF component to the at least one internally installed antenna device.