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公开(公告)号：US11071079B2
公开(公告)日：2021-07-20
申请号：US15575757
申请日：2015-12-15
发明人： Van E. Hanson
摘要： 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.
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公开(公告)号：US11032726B2
公开(公告)日：2021-06-08
申请号：US14303287
申请日：2014-06-12
发明人： Thomas Kummetz , Matthew Thomas Melester , Stefan Eisenwinter , Alfons Dussmann , Markus Gerhard Kalt , Marianna Fabbri
摘要： A mobile testing system for optimizing wireless coverage in a distributed antenna system is disclosed. In some aspects, the mobile testing system includes a measurement receiver that can determine signal levels for a respective signals communicated via the distributed antenna system. A processing device of the mobile testing system can identify a subset of the signals by decoding a respective identifier encoded in each of the subset of signals. The identifiers specify that the subset of signals is targeted to at least one coverage zone in which the mobile testing system is located. A subset of signal levels is obtained by the measurement receiver that corresponds to each of the subset of signals. The processing device can generate coverage contour data based on the subset of signal levels that describes signal coverage for at least one coverage zone.
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公开(公告)号：US10819385B2
公开(公告)日：2020-10-27
申请号：US16780441
申请日：2020-02-03
摘要： A telecommunications system may include a distortion cancellation subsystem for use with a circulator device coupling an antenna to a transmit path and a receive path. The distortion cancellation subsystem may include a correction circuit and a cancellation circuit. In some aspects, the correction circuit may include a processing device or adaptive filter to correct imperfections in transmit signal samples generated by directional couplers. The correction circuit may also include a summing device to remove receive signal components from the transmit signal samples. The cancellation circuit may receive the output signal of the correction circuit via an adaptive filter. The output of the adaptive filter may be summed with a receive signal to minimize distortion of the receive signal.
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公开(公告)号：US10700754B2
公开(公告)日：2020-06-30
申请号：US15727420
申请日：2017-10-06
发明人： Luigi Tarlazzi , Samuele Brighenti , Pier Faccin
IPC分类号： H04B10/00 , H04B7/06 , H04B7/024 , H04B7/0452 , H04W88/08 , H04B7/0413 , H04J14/02 , H04L5/14 , H04L27/20
摘要： A distributed antenna system (DAS) includes a master unit; a plurality of remote units communicatively coupled with the master unit and distributed to provide coverage within a service area, each of the remote units remotely located from the master unit and other remote units; a coupler element coupled to receive a plurality of MIMO signals, the MIMO signals including first and second MIMO signals, the coupler element configured to: introduce a phase shift in a first portion of the first MIMO signal to generate a first phase shifted portion of the first MIMO signal; combine the first phase shifted portion with a second portion of the second MIMO signal to generate a combined MIMO signal; and present the combined MIMO signal at a first output port of the coupler element; at least one antenna coupled with each remote unit and configured to receive the combined MIMO signal for transmission.
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公开(公告)号：US10651893B2
公开(公告)日：2020-05-12
申请号：US15707777
申请日：2017-09-18
发明人： Peter Schmid , Oliver Braz , Peter Gunzner , Mathias Schmalisch , Joerg Stefanik
IPC分类号： H04B3/36 , H04B7/155 , H04L5/14 , H04L7/00 , H04B7/0413
摘要： In one embodiment, a TDD repeater system comprises: a master unit comprising separate uplink and downlink signal paths defined therein, and configured to couple in an uplink direction to a base station and in a downlink direction to at least one remote antenna unit, wherein the uplink path communicates uplink communication signals, wherein the downlink path communicates downlink communication signals; a switch configured to change direction of signal transmissions within the master unit between the uplink communication signals and the downlink communication signals; a synchronizing unit is configured to receive via the downlink signal path a clock signal from the downlink communication signals, wherein the synchronizing unit supplies a control signal to the switch corresponding to the clock signal; wherein the switch swaps the direction of signal transmissions within the master unit between the uplink communication signals and the downlink communication signals in response to the control signal.
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公开(公告)号：US20190341970A1
公开(公告)日：2019-11-07
申请号：US16511427
申请日：2019-07-15
发明人： Keld Knut Lange
摘要： One embodiment is directed to a radio access network (RAN) system comprising a baseband unit (BBU), a plurality of remote radio units, wherein each of the remote radio units is located remotely from the BBU, and an intermediary unit The BBU, the remote radio units, and the intermediary unit are communicatively coupled to each other via a switched Ethernet network. The BBU is configured to transmit downlink fronthaul data to the intermediary unit via the switched Ethernet network. The intermediary unit is configured to receive the downlink fronthaul data from the BBU and simulcast the downlink fronthaul data to the remote radio units via the switched Ethernet network. Each remote radio unit is configured to receive the downlink fronthaul data and generate therefrom at least one downlink radio frequency signal for wireless communication to user equipment (UE) via an associated at least one antenna.
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公开(公告)号：US10461839B2
公开(公告)日：2019-10-29
申请号：US15560113
申请日：2015-10-19
发明人： Keld Knut Lange , Alfons Dussmann , Daniel Schwab
IPC分类号： H04B7/155 , H04B17/336
摘要： A digital repeater system for repeating RF signals can include a receiving section for receiving an RF input signal that includes a frequency band with at least one subband associated with a communication channel of a telecommunications network. The receiving section can digitize the RF input signal to obtain a digital signal. A filter device includes a digital filter with a passband for filtering the digital signal. The digital filter is configurable by setting filter coefficients. A gain control device can set the gain of at least a portion of the digital signal. A transmitting section can transmit an RF output signal and can convert the digital signal to the RF output signal for transmission. A control unit can configure the filter coefficients of the digital filter based on the gain setting of the gain control device.
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88.发明授权公开(公告)号：US10382847B2
公开(公告)日：2019-08-13
申请号：US15903643
申请日：2018-02-23
发明人： Jaroslav Hoffmann , Peter Starek
IPC分类号： H04B7/00 , H04Q11/00 , H04B10/2575 , H04W56/00 , H04B10/25 , H04W16/28 , H04B1/40 , H01Q3/00 , H04W88/08 , H04B7/024
摘要： 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.
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公开(公告)号：US10313030B2
公开(公告)日：2019-06-04
申请号：US14448080
申请日：2014-07-31
发明人： Matthew Thomas Melester , Stefan Eisenwinter , Ahmed H. Hmimy , Massimiliano Mini , Joerg Stefanik , Alfons Dussmann
IPC分类号： H04W52/00 , H04B17/00 , H04B17/12 , H04W24/10 , H04W88/08 , H04B1/00 , H04W52/24 , H04B1/40 , H04W52/14
摘要： Certain aspects are directed to a configuration sub-system for telecommunication systems. The configuration sub-system can include a test signal generator, a power measurement device, at least one additional power measurement device, and a controller. The test signal generator can be integrated into components of a telecommunication system. The test signal generator can provide a test signal to a signal path of the telecommunication system. The power measurement device and the additional power measurement device can respectively be integrated into different components of the telecommunication system. The power measurement device and the additional power measurement device can respectively measure the power of the test signal at different measurement points in the signal path. The controller can normalize signals transmitted via the telecommunication system by adjusting a path gain for the signal path based on measurements from the power measurement device and the additional power measurement device.
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公开(公告)号：US20190097739A1
公开(公告)日：2019-03-28
申请号：US16200416
申请日：2018-11-26
发明人： Matthew Thomas Melester , Stefan Eisenwinter , Ahmed H. Hmimy , Massimiliano Mini , Joerg Stefanik , Alfons Dussmann
CPC分类号： H04B17/0085 , H04B1/006 , H04B1/40 , H04B17/12 , H04W24/10 , H04W52/143 , H04W52/24 , H04W52/245 , H04W88/085
摘要： Certain aspects are directed to a configuration sub-system for telecommunication systems. The configuration sub-system can include a test signal generator, a power measurement device, at least one additional power measurement device, and a controller. The test signal generator can be integrated into components of a telecommunication system. The test signal generator can provide a test signal to a signal path of the telecommunication system. The power measurement device and the additional power measurement device can respectively be integrated into different components of the telecommunication system. The power measurement device and the additional power measurement device can respectively measure the power of the test signal at different measurement points in the signal path. The controller can normalize signals transmitted via the telecommunication system by adjusting a path gain for the signal path based on measurements from the power measurement device and the additional power measurement device.
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