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公开(公告)号：USRE49377E1
公开(公告)日：2023-01-17
申请号：US15436605
申请日：2017-02-17
IPC分类号： H04B10/2575 , H04B1/40 , H04W16/26
摘要： An optical medium, such as fiber, is tapped to provide an antenna port wherever radio service coverage is desired. Each antenna port is a bi-directional remote unit that receives a digital optical signal from a host unit and transforms the signal to a radio frequency signal for transmission by the remote unit. The remote unit receives radio frequency signals that are converted to digital signals and summed with signals from other remote units and converted to an optical signal for transmission to the host unit.
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2.发明授权公开(公告)号：US11329701B2
公开(公告)日：2022-05-10
申请号：US17107531
申请日：2020-11-30
IPC分类号： H04B7/024 , H04B7/26 , H04W24/00 , H03J7/04 , H04W16/28 , H04W88/08 , H01Q1/24 , H04W56/00 , H04B1/40
摘要： A network interface for use within a distributed antenna system, the network interface including circuitry configured to: receive a downlink digital communication signal from an external device external to the distributed antenna system, wherein a reference clock is embedded in the downlink digital communication signal; generate a master reference clock for the distributed antenna system using the reference clock embedded in the downlink digital communication signal; convert the downlink digital communication signal into a downlink signal; communicate the downlink signal toward a remote antenna unit within the distributed antenna system; and wherein the distributed antenna system is configured to distribute the master reference clock to various components of the distributed antenna system to keep the various components of the distributed antenna system locked to a single clock, wherein the various components of the distributed antenna system include the remote antenna unit.
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公开(公告)号：US10826676B2
公开(公告)日：2020-11-03
申请号：US16554165
申请日：2019-08-28
发明人： Philip M. Wala
摘要： Systems and method for resampling are provided. A method of resampling includes receiving a first sampled signal that is sampled at a first sample rate, where the first sample rate is a submultiple of a system clock rate for a Farrow filter. The method further includes resampling the first sampled signal, using the Farrow filter having a plurality of finite impulse response (FIR) filters and an arbitrary position interpolator, at a second sample rate to generate a second sampled signal. The interpolation factor for each sample of the second sampled signal is retrieved from at least one lookup table stored in memory and the first sample rate and the second sample rate are fixed and locked to a common frequency reference. The method further includes outputting the second sampled signal at the second sample rate.
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公开(公告)号：US20170170864A1
公开(公告)日：2017-06-15
申请号：US15444134
申请日：2017-02-27
发明人： Philip M. Wala , Robert J. Koziy , Dean Zavadsky
CPC分类号： H04B1/40 , H04B1/18 , H04W88/085
摘要： A modular wireless communications platform is provided. The modular wireless communications platform has a modular host unit and a modular remote unit in communication with the modular host unit. The modular host unit and remote unit include a serial radio frequency communicator configured to convert serial digital data into RF sampled data and configured to convert RF sampled data into serial digital data. The modular host unit and remote unit also include an interface coupled to the serial radio frequency communicator and configured to allow transfer of the RF sampled data from the serial radio frequency communicator to a digital to analog radio frequency transceiver module.
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公开(公告)号：US20160248508A1
公开(公告)日：2016-08-25
申请号：US15144219
申请日：2016-05-02
发明人： Philip M. Wala
IPC分类号： H04B10/2575 , H04W72/00 , H04Q11/00
CPC分类号： H04B7/2606 , H03M7/4006 , H04B3/02 , H04B10/25753 , H04B10/25754 , H04L51/04 , H04L51/28 , H04L51/38 , H04L65/1006 , H04L65/1016 , H04N19/109 , H04N19/139 , H04N19/625 , H04N19/91 , H04Q11/0067 , H04Q2011/0047 , H04W4/06 , H04W4/12 , H04W4/14 , H04W72/005 , H04W88/08 , H04W88/085 , Y10S370/906 , Y10S370/907
摘要： One embodiment is directed to a system for use with a coverage area in which one or more wireless units wirelessly transmit using a wireless radio frequency spectrum. The system comprises a first unit, and a plurality of second units communicatively coupled to the first unit using at least one communication medium. Each of the plurality of second units generates respective digital RF samples indicative of a respective analog wireless signal received at that second unit. Each of the plurality of second units communicates the respective digital RF samples generated by that second unit to the first unit using the at least one communication medium. The first unit digitally sums corresponding digital RF samples received from the plurality of second units to produce summed digital RF samples. The system is configured so that an input used for base station processing is derived from the resulting summed digital RF samples.
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公开(公告)号：US11601158B2
公开(公告)日：2023-03-07
申请号：US17119675
申请日：2020-12-11
摘要： In an embodiment, a remote antenna unit includes a transmitter, a receiver, an antenna array, and first and second interference circuits. The transmitter is configured to generate at least one transmit signal, and the receiver is configured to process at least one receive signal. The antenna array includes one or more antennas, each of at least one of the one or more antennas coupled to the transmitter and configured to radiate a respective downlink signal in response to a respective one of the at least one transmit signal, and each of at least one of the one or more antennas coupled to the receiver and configured to generate a respective one of the at least one receive signal in response to an uplink signal. And the first and second interference circuits are each coupled to the transmitter and to the receiver and are each configured to reduce interference in each of the at least one receive signal.
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公开(公告)号：US10567044B2
公开(公告)日：2020-02-18
申请号：US16188256
申请日：2018-11-12
IPC分类号： H04B7/04 , H04J3/00 , H04N21/2385 , H04H20/79 , H04W88/08 , H04B7/0413 , H04W72/04
摘要： A distributed base station radio system includes a first radio head configured to: communicate first analog radio frequency signals in a first radio frequency band with a first subscriber unit; convert between the first analog radio frequency signals in the first radio frequency band and a first digital broadband signal through at least one of frequency conversion and analog to digital conversion; a first broadband to channelized conversion unit communicatively coupled to the first radio head and configured to communicate the first digital broadband signal with the first broadband to channelized conversion unit; wherein the first broadband to channelized conversion unit is further configured to: communicate the first digital broadband signal; convert between the first digital broadband signal and first digital channelized data for the first radio frequency band; and communicate the first digital channelized data for the first radio frequency band with a first channelized radio frequency interface.
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公开(公告)号：US10205584B2
公开(公告)日：2019-02-12
申请号：US15727469
申请日：2017-10-06
发明人： Dean Zavadsky , Philip M. Wala
摘要： A distributed antenna system (DAS) includes: signal interface units to receive downlink asynchronous radio carrier signals for radio frequency carriers from external device(s), each having a different clock, the signal interface units configured to: re-clock the downlink asynchronous radio carrier signals to a master clock of the DAS and convert the downlink asynchronous radio carrier signals to downlink digital signals; a host unit communicatively coupled to signal interface units and configured to combine at least two downlink digital signals into an aggregate downlink digital signal; an antenna unit coupled to the host unit and configured to: receive the aggregate downlink digital signal from the host unit, convert the aggregate downlink digital signal(s) and/or another signal based on the aggregate downlink digital signal into downlink radio frequency signals, and wirelessly transmit downlink radio frequency signals to a subscriber unit.
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公开(公告)号：US10128918B2
公开(公告)日：2018-11-13
申请号：US15357617
申请日：2016-11-21
IPC分类号： H04J3/00 , H04W88/08 , H04H20/79 , H04N21/2385 , H04W72/04 , H04B7/04 , H04B7/0413
摘要： A distributed base station radio system includes first channelized to broadband conversion unit that receives first downlink channelized data for first radio frequency band from first channelized radio frequency source; and first universal remote radio head communicatively coupled to first channelized to broadband conversion unit. First channelized to broadband conversion unit converts first downlink channelized data into a first downlink broadband signal. First channelized to broadband conversion unit communicates the first downlink broadband signal to first universal remote radio head. First universal remote radio head receives first downlink broadband signal. First universal remote radio head frequency converts the first downlink broadband signal into first downlink radio frequency signals in first radio frequency band. First universal remote radio head is further configured to transmit first downlink radio frequency signals in first radio frequency band to first subscriber unit.
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10.发明申请公开(公告)号：US20170311380A1
公开(公告)日：2017-10-26
申请号：US15645791
申请日：2017-07-10
发明人： Dean Zavadsky , Philip M. Wala
CPC分类号： H04W88/085 , H04W88/16 , H04W92/02
摘要： A signal interface unit for a distributed antenna system (DAS) includes a channelized radio carrier interface configured to receive a downlink channelized radio carrier for a radio frequency carrier from a channelized radio carrier base station interface; an antenna side interface configured to communicate a downlink digitized radio frequency signal from the antenna side interface to the DAS communicatively coupled to the antenna side interface; and a signal conversion module communicatively coupled between the channelized radio carrier interface and the antenna side interface and configured to convert between the downlink channelized radio carrier and the downlink digitized radio frequency signal at least in part by adjusting at least one downlink attribute of the downlink digitized radio frequency signal communicated to the DAS based on requirements of the channelized radio carrier base station interface to cause the DAS to appear as a remote radio head to the channelized radio carrier interface.
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