Andrew Wireless Systems Gmbh

Commscope Technologies LLC

Jaroslav Hoffmann

Peter Starek

Karl-Heinz Fackler

Peter Gunzner

Andreas Biehler

Alexander Kopp

Oliver Braz

Jorg Stefanik

Klaus Peter Möller

In one embodiment, a distributed antenna system comprises at least one master unit; at least one remote antenna unit coupled to the master unit and comprising a power amplifier to radiate a remote downlink radio frequency signal, the remote antenna unit further configured to receive a remote uplink radio frequency signal from at least one antenna, the remote downlink radio frequency signal comprises first and second downlink frequency bands and wherein the remote uplink radio frequency signal comprises first and second uplink frequency bands; a band suppression module comprising: a controller; an uplink band suppression element configured to apply an attenuation to suppress the first uplink frequency band in response to a signal from the controller; and a downlink band suppression element configured to apply an attenuation to suppress the first downlink frequency band in response to the signal from the band suppression controller.

Selectable band suppression for a distributed antenna system

In one embodiment a system comprises a master unit configured to receive a base station downlink radio frequency signal and transmit a base station uplink radio frequency signal; and a plurality of remote antenna units each communicatively coupled to the master unit using at least one cable, the remote antenna units each configured to radiate a remote downlink radio frequency signal from at least one antenna and to receive a remote uplink radio frequency signal from the at least one antenna. The master unit comprises a channel selective uplink muting circuit. The master unit receives and monitors uplink transport signals from the remote uplink radio frequency signal to identify one or more channels within the uplink transport signals that are not carrying uplink communications traffic; wherein the channel selective uplink muting circuit selectively mutes channels of the uplink transport signals that are not carrying uplink communications traffic.

Systems and methods for uplink noise suppression for a distributed antenna system

In one embodiment, a distributed antenna system comprises: at least one master unit; at least one remote antenna unit communicatively coupled via a switch to the master unit by a primary cable and a secondary cable both coupled to the switch, the remote antenna unit comprising a compensating link check module that outputs a control signal to the switch, wherein the switch selects between the primary and secondary cable in response to the control signal; wherein the compensating link check module controls the switch to momentarily select the secondary cable to perform a link check during which the remote unit measures a quality metric of a downlink signal received via the secondary cable; and upon initiation of the link check, the compensating link check module adjusts an attenuation of the downlink signal received on the secondary cable by loading calibration settings for the secondary cable into a compensation attenuator.

Systems and methods for communication link redundancy for distributed antenna systems

In one embodiment, a distributed antenna system comprises: a master unit configured to receive a base station downlink radio frequency signal and to transmit a base station uplink radio frequency signal; and at least one remote antenna unit that is communicatively coupled to the master unit using at least one cable, the remote antenna unit configured to radiate a remote downlink radio frequency signal and to receive a remote uplink radio frequency signal; wherein the master unit comprises: a controller; and a respective interface to couple the controller to a first operator control panel; wherein the at least one remote antenna unit comprises: a controller; and a respective interface to couple the controller to a second operator control panel; wherein the master unit controller and the remote unit controller synchronize at least some information between the first and second operator control panels over the at least one cable.

Systems and methods for communicating signaling over an optical distributed antenna system

In one embodiment, an emergency configuration control device is provided for a communications system that provides wireless RF communication service to a coverage area, wherein the system comprises an RF protection function coupled to at least one power amplifier, protection function configured to disable the power amplifier when the protection function determines that at least one parameter of the power amplifier has deviated outside of an operating specification, the device comprising: an emergency configuration control module executed by a controller, the emergency configuration control module configured to determine when an emergency event is occurring within the coverage area as a function of a first set of input signals; wherein the emergency configuration control module enters phase one operation and inhibits disabling of the power amplifier by the RF protection function and outputs one or more phase one notification signals in response to determining that the emergency event is occurring.

Systems and methods for emergency operation of a wireless communication system

An interface module () for a unit () which is designed to transmit and/or amplify essential communication signals inside an antenna distribution system () is specified, said module comprising a first analog interface () for forwarding and receiving essential communication signals from mobile terminals (), a second interface () for forwarding and receiving essential communication signals from the antenna distribution system (), at least one signal path () for forwarding the received communication signals between the two interfaces (), and a controllable digital unit () which incorporates the signal path () and has means for digitizing incoming communication signals and for subjecting outgoing communication signals to analog conversion. In this case, the digital unit () is designed to identify essential communication signals in the digitized communication signals, to mask the remaining signals and to forward the essential communication signals. An antenna distribution system () having at least one master unit () and a number of remote units () which are connected to the latter and are equipped with such an interface module () is also specified. The invention makes it possible to use the advantages of a modern radio network architecture to communicate on essential communication channels.

Growing community of inventors

Donauwörth, Germany

Jaroslav Hoffmann