Patents Assigned to ANDREW WIRELESS SYSTEMS GMBH
  • Patent number: 11825433
    Abstract: The present disclosure describes devices, systems, and methods for synchronizing multiple-input/multiple-output (“MIMO”) signals or other signals in telecommunication systems. Some aspects may involve transmitting signals between a head-end unit and remote units of a telecommunication system. A first delay of a signal path between the head-end unit and a first remote unit of the remote units may be determined to be greater than each delay of signal paths between the head-end unit and other remote units. Based on the first delay, the telecommunication system may be configured to delay transmission of additional signals such that the additional signals are simultaneously transmitted to another unit by either the head-end unit or the remote units.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: November 21, 2023
    Assignee: ANDREW WIRELESS SYSTEMS GMBH
    Inventor: Van Erick Hanson
  • Publication number: 20160242147
    Abstract: Certain features relate to a centralized radio access network (C-RAN) that can flexibly and dynamically allocate protocol layer processing among baseband processing units and remote units. A C-RAN can be configured to include a media access control (“MAC”) scheduler and a fronthaul physical layer coordinator. The fronthaul physical layer coordinator can include a fronthaul physical layer scheduler, which can allocate spatial resources by determining the specific remote unit(s) that should serve a given mobile device. The MAC scheduler can allocate time/frequency resources to user devices communicating with the remote units. The fronthaul physical layer coordinator or the MAC scheduler can also determine the optimal transmission modes remote units can use to serve the user devices.
    Type: Application
    Filed: September 23, 2014
    Publication date: August 18, 2016
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Luigi Tarlazzi, Samuele Brighenti
  • Publication number: 20160065293
    Abstract: A distributed antenna system includes a multiple-input and multiple-output (MIMO) base station configured to output at least a first signal and a second signal. At least one master unit communicates with the MIMO base station. At least one remote unit communicates with the master unit. At least one antenna is coupled with the remote unit for receiving signals from the remote unit. A coupler element is configured for introducing a phase shift in a portion of at least the first MIMO signal and for combining the phase shifted first MIMO signal portion with a portion of the second MIMO signal and presenting the combined first and second MIMO signal portions at an output port of the coupler element. An antenna is configured for receiving the combined MIMO signal portions for transmission.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Luigi Tarlazzi, Samuele Brighenti, Pier Faccin
  • Patent number: 9271289
    Abstract: A switching control module can optimize time division duplexing operations of a distributed antenna system (“DAS”). The switching control module can include a measurement receiver and a processor. The measurement receiver can measure signal powers of downlink signals in a downlink path of the DAS. The processor can determine start times for downlink sub-frames transmitted via the downlink path based on downlink signal powers measured by the measurement receiver exceeding a threshold signal power. The processor can identify a clock setting that controls a timing of switching signals used for switching the DAS between an uplink mode and a downlink mode. The processor can statistically determine a switching time adjustment for the clock setting based on switching time differentials between the clock setting and the start times. The processor can update the clock setting based on the switching time adjustment.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: February 23, 2016
    Assignee: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Daniel Schwab, Thomas Kummetz, Alfons Dussmann
  • Publication number: 20150304005
    Abstract: A telecommunications system is provided that is controllably operable as a sectorized antenna system and as an omnidirectional antenna system without requiring hardware reconfiguration. The telecommunications system includes a phase correlation measurement unit that can be between a sectorized antenna sub-system and a remotely located RF source site. The phase correlation measurement unit can be coupled to the RF source site over at least one feed line. The phase correlation measurement unit can ouptut signals for controlling a phase shifter at the RF source site for phase shifting downlink signals and for causing operation of the sectorized antenna sub-system as an omnidirectional antenna sub-system. In a sectorized operation mode, the phase correlation measurement unit and the phase shifter can be inactivated.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 22, 2015
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Peter Schmid, Stefan Eisenwinter, Matthew Thomas Melester, Peter Gunzer, Michael Williamson
  • Patent number: 9036486
    Abstract: Certain aspects are directed to an intermodulation detection sub-system. The intermodulation detection sub-system includes a test signal generation module, at least one intermodulation detection device, and a controller. The test signal generation module is integrated into a unit of a telecommunications system. The test signal generation module is configured to provide a test signal to a remote antenna unit of the telecommunications system. The intermodulation detection device is integrated into the telecommunications system. The intermodulation detection device is configured to detect intermodulation products generated by mixing a first signal component and a second signal component of the test signal. The controller is integrated into the unit. The controller is configured to control the test signal generation module and the at least one intermodulation detection device.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: May 19, 2015
    Assignee: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Gregory Allan Maca, Udo-Michael Vetter
  • Publication number: 20140306770
    Abstract: A signal-processing system has an amplifier that generates an amplified (RF) output signal based on an (RF) input signal. The amplifier receives a supply voltage that can be selectively set to an appropriate level between a lower power supply level and a higher power supply level. With one power supply permanently connected to the supply voltage node, a control unit executes software to toggle a supply switch to periodically connect and disconnect the other power supply thereby generating a weighted average value for the supply voltage between the two power supply levels. When a sudden and large increase occurs in the (input) power level, hardware-interrupt circuitry interrupts and supersedes the software-based control of the supply-voltage switch to quickly switch the supply voltage towards the higher power supply level. The hardware-interrupt circuitry handles such situations faster than the software-based control in order to prevent a limit violation of spectrum emission requirements.
    Type: Application
    Filed: November 22, 2011
    Publication date: October 16, 2014
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventor: Udo-Michael Vetter
  • Publication number: 20140161162
    Abstract: A master unit and a remote unit is provided for a multiband transmission system for distributing and combining signals of at least one wireless communication network and at least one digital network. A reference frequency generator is arranged in the master unit, the reference frequency generator being designed to clock a master modem for converting the signals of the at least one digital network. The reference frequency signal emitted by the reference frequency signal is restored via a reference frequency receiver and is used for closing a remote modem that is located there for demodulation.
    Type: Application
    Filed: February 7, 2014
    Publication date: June 12, 2014
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: OLIVER BRAZ, STEFAN EISENWINTER, MATHIAS SCHMALISCH, JOERG STEFANIK, PETER SCHMID
  • Publication number: 20140119197
    Abstract: Certain aspects are directed to an intermodulation detection sub-system. The intermodulation detection sub-system includes a test signal generation module, at least one intermodulation detection device, and a controller. The test signal generation module is integrated into a unit of a telecommunications system. The test signal generation module is configured to provide a test signal to a remote antenna unit of the telecommunications system. The intermodulation detection device is integrated into the telecommunications system. The intermodulation detection device is configured to detect intermodulation products generated by mixing a first signal component and a second signal component of the test signal. The controller is integrated into the unit. The controller is configured to control the test signal generation module and the at least one intermodulation detection device.
    Type: Application
    Filed: September 17, 2012
    Publication date: May 1, 2014
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Gregory Allan Maca, Udo-Michael Vetter
  • Publication number: 20140068912
    Abstract: A disconnect tool for disconnecting a cable connector from a terminal is provided. The disconnect tool can include a body and a gripping portion at a first end of the body and perpendicular to the body. The gripping portion can be adapted to engage a cable connector. The groove can have a width greater than or equal to the cable connector. Engaging the cable connector can include positioning the gripping portion such that the gripping portion partially surrounds the outer diameter of the cable connector. The width of the gripping portion can be sufficiently narrow so as to allow the gripping portion to engage a first cable connector in close proximity to a second cable connector. For a disconnect tool engaging a cable connector, applying a force to a second end of the body in an opposite direction from the cable connector can disconnect the cable connector from the terminal.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 13, 2014
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Dieter Schiele, Hermann Wiedermann
  • Publication number: 20130316576
    Abstract: Connecting element, in particular for an RF application, having a plug part, comprising an internal conductor which extends in the axial direction and an external conductor which surrounds the internal conductor, wherein the internal conductor and the external conductor are shaped at one end of the plug part to form a plug connection, wherein the plug connection can be freely plugged, and the plug part is axially displaceably mounted, as such, in a mounting module and is supported by means of a prestressing means so as to counteract a plugging force. In this case, provision is made for a plate spring to be arranged at the base of the external conductor. A device, in particular for an RF application, having a connecting element of this kind is also specified.
    Type: Application
    Filed: December 13, 2011
    Publication date: November 28, 2013
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventor: Karl-Heinz Fackler
  • Publication number: 20120099490
    Abstract: A repeater capable of emitting as little electromagnetic radiation as possible is described. The repeater can transmit communication signals between a base station and a network terminal in a radio transmission network, such as a mobile radio network. The repeater can include a transmitter that can transmit the communication signals as a radio signal to the network terminal. The repeater can also include a sensor for detecting a switching signal and a control unit that can change the transmitter between a passive operating state and an active operating state based on the switching signal. The transmission power of the transmitter can be lower in the passive operating state than in the active operating state.
    Type: Application
    Filed: October 6, 2009
    Publication date: April 26, 2012
    Applicant: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Thomas Kummetz, Arndt Pischke
  • Patent number: D732911
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: June 30, 2015
    Assignee: ANDREW WIRELESS SYSTEMS GMBH
    Inventors: Dieter Schiele, Hermann Wiedermann