CN1426664A - Radio frequency coverage of enclosed regions - Google Patents
Radio frequency coverage of enclosed regions Download PDFInfo
- Publication number
- CN1426664A CN1426664A CN01808577A CN01808577A CN1426664A CN 1426664 A CN1426664 A CN 1426664A CN 01808577 A CN01808577 A CN 01808577A CN 01808577 A CN01808577 A CN 01808577A CN 1426664 A CN1426664 A CN 1426664A
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- Prior art keywords
- signal
- transceiver
- subsidiary
- subordinate
- subordinate transceiver
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
Abstract
A method for wireless communication, including positioning a first plurality of slave transceivers (26) within a region generally closed off to electromagnetic radiation from sources external to the region, and positioning a second plurality of slave transceivers (28) within the region in position spatially separated from and spatially independent of the positions of the first plurality of slave transceivers (26). The method further includes receiving at the first and second plurality of slave transceivers (26, 28) a radio frequency (RF) signal generated within the region and generating respective first and second slave signals responsive thereto, delaying the second slave signal, conveying the first and delayed second slave signals to one or more base transceiver stations (BTSs) outside the region, and jointly processing the first and second slave signals conveyed to the one or more BTSs so as to recover information contained in the RF signal generated within the region.
Description
Invention field
The present invention relates generally to radio communication, relate in particular on the whole the radio communication in the zone that isolates with electromagnetic radiation.
Background of invention
In cellular communication system, generally exist the zone that some signal is difficult to or not exclusively cover, for example, the building of metal framework and underground.In the art, the more known method that is used for improving the covering in these zones.
The 5th, 404, No. 570 United States Patent (USP)s of people such as Charas be described in can received signal receiver base station (BTS) and the enclosed environment such as the tunnel it isolated the signal of base transceiver station emission, quote it here and disclose as a reference.This system makes high-frequency radio frequency (RF) signal from BTS downconvert to intermediate frequency (IF) signal, then in enclosed environment by cable and the aerial radiation receiver to the enclosed environment.Receiver again with this IF signal up-conversion to original RF signal.Be included in the vehicle that moves in the tunnel in the system of in patent discloses, describing, so that the passenger who is cut off under other situation on the vehicle of communicating by letter with BTS can receive signal.
The 5th, 603, No. 080 United States Patent (USP) of people such as Kallandar has been described a plurality of relay systems that use between a plurality of BTS and enclosed environment, this class enclosed environment is quoted it here and disclosed as a reference from the signal of its corresponding BTS emission.Each system will downconvert to the IF signal from the RF signal of its corresponding BTS, by the cable in the enclosed environment IF signal be transferred to one or more corresponding receiver separately in the enclosed environment then.Each receiver with this IF signal up-conversion to original RF signal.The system of describing in patent discloses is included in the vehicle that moves between the overlapping region in tunnel, and each zone is to be covered by its relay system by a BTS.Like this, being cut off under other situation can be from least one BTS received signal in logical and tunnel from the passenger on the vehicle of the communication of one or more BTS.
The 5th, 765, No. 099 United States Patent (USP) of people such as Georges has been described a kind of system and method, is used for transmission RF signal between using such as two or more zones of twisted pair wire low bandwidth medium.Here quote its announcement.In first zone, radiofrequency signal and first local oscillator generation mixing are to produce the IF signal of a down-conversion.This IF signal passes through low bandwidth medium transmission to the second zone, and utilizes second local oscillator to make the signal up-conversion to original RF signal there.Each local oscillator all is phase-locked loop (PLL) locking in each zone, producing identical frequency, this locking is to realize in each loop by local oscillator frequencies relatively with at the single low frequency stable reference signal of a region generating.Reference signal is in the interregional low bandwidth medium transmission of passing through.
The 5th, 513, No. 176 United States Patent (USP)s of people such as Dean have been described a kind of spaced antenna battle array in the zone that receives difficulty, quote it here and disclose as a reference.By the signal diversifying that in antenna array, produces.And strengthened the receptivity of this antenna array.Each antenna in antenna array has the different time delay that is applied to its received signal, therefore just produces the diversity of received signal.Preferably the signal that postpones through difference is downconverted to intermediate-freuqncy signal, then by cable transmission outside the zone.
The 5th, 930, No. 293 United States Patent (USP)s of people such as Light have been described a kind of wireless repeater, and this repeater comprises on the space independently first and second antennas, quote it here and disclose as a reference.Two slave antennas all receive the signal from a transmitter, and the received signal of second antenna has added time delay on primary signal.Two signal plus are launched described aggregate signal to form an aggregate signal from third antenna.Receive this receiver that closes poly-signal and can reproduce this by the received signal of first and second antennas.
Summary of the invention
The purpose of some aspects of the present invention is to provide improved method and apparatus for emitting radio frequency signal in the zone of general and electromagnetic radiation isolation.
In preferred embodiment of the present invention, (as interior of building) installed one group of fixing transceiver (being called slave unit here) in the electromagnetic radiation area isolated of general and region exterior.At least one mobile transceiver (as mobile cellular telephone) received RF (RF) signal of slave unit from this zone.This group slave unit is divided into the first and second son groups, generally has the fixed transceiver of roughly the same number in each height group.
The slave unit of the slave unit of the first son group and the second son group spatially separates.On the space, separating, make transceiver in the first son group be independent of the transceiver in the second son group and place.Preferably the signal that is enough to make the signal that the first sub-winding receives and the second sub-winding to be received at least can be distinguished separating on the space, and these signals are from the once transmission of at least one mobile transceiver.These signals generally will can be distinguished in the combined aspects of amplitude, phase place, the time of advent or these and other signal parameter.Like this, the slave unit one of in the set of a plurality of slave unit can be used as with respect to as the diversity receiver of the slave units of other son groups of main receiver and work.
The RF signal that slave unit is received from least one mobile transceiver downconverts to intermediate frequency (IF) signal, and these signals are by one or more cable transmission then.The IF signal that comes from each slave unit group is transferred to master unit, and master unit is to this IF signal up-conversion, is included in information in the corresponding RF signal with reproduction.In one of child group, the IF signal is introduced time delay, this time delay is transferred to the RF signal of corresponding reproduction.Make delayedly separating/make up in the combiner, the IF signal (comprising main and delayed diversity signal) after the combination is up-converted into makes up the RF signal with not delayed IF signal.Combination RF signal is transferred to a base transceiver station (BTS), and it separates the mediation reproduction to the information that is included in the combination RF signal.
Like this, the single time delay that is incorporated in the diversity signal makes that general code division multiple access (CDMA) rake receiver can be to being included in main signal and demodulates information in the diversity signal and the reproduction through combination.With existing in this area method is different is that method of the present invention makes in a closed area and produces, and the main signal and the diversity signal that are received by standalone transceiver on the space can be reproduced as optimum signal.
In preferred embodiments more of the present invention, the IF signal is transferred to first and second slave units group, and adds time delay on the IF signal one of in being transferred to the son group.In slave unit, make the IF signal be up-converted into the RF signal, and handle comprise delayed and not delayed RF signal radiate from the unit.In one or more mobile transceivers each all receives this two kinds of signals.Because introduce time delay in one of signal, so each mobile transceiver receives these two kinds of signals as composite signal, this composite signal includes the information that is included in first signal and the secondary signal.Better ground, each mobile transceiver wherein use information with independent or the form of combination, therefore the improvement that has caused total signal to receive all to this demodulates information and reproduction.
Preferably, the RF signal is the Direct-Spread modulation signal, and wherein each signal comprises a plurality of chips.Though what it should be understood that preferred embodiments uses more of the present invention is cdma system, non-cdma system is used in other preferred embodiments of the present invention, as comprises the gsm system of the balancer that can bear certain signal delay.
Therefore,, provide a kind of method of wireless communication that is used for, having comprised according to preferred embodiment of the present invention:
In the electromagnetic radiation area isolated in general and region exterior source, place more than first subordinate transceiver;
Neutralize in the zone position of more than first subordinate transceiver spatially separates, and independently places more than second subordinate transceiver on the position on the space;
Be received in radio frequency (RF) signal that region generating becomes at more than first with more than second places, and produce corresponding first and second subsidiary signals according to the RF signal;
Postpone second subsidiary signal;
First and the second delayed subsidiary signal be sent to one or more base transceiver stations (BTS) outside the zone; And
Common processing is transferred to first and second subsidiary signals of one or more BTS, is included in the information in the RF signal that produces in this zone with reproduction.
Preferably, transmitting first and second subsidiary signals comprises from first subsidiary signal and reproduces main RF signal, and reproduce diversity RF signal, and handle first and second subsidiary signals jointly and comprise from the main RF signal that reproduces and the diversity RF signal reproduction optimum RF signal of reproduction from second subsidiary signal.
Preferably, place more than second subordinate transceiver and be included in more than first the subordinate transceiver place enough far away that is separated by and place in more than second the subordinate transceiver at least one, so that can distinguish RF signal that receives from more than first subordinate transceiver and the RF signal that receives from more than second subordinate transceiver.
Preferably, postponing second subsidiary signal comprises second subsidiary signal is applied single time delay.
According to embodiments of the invention, the equipment that is used for radio communication further is provided, comprising:
More than first subordinate transceiver and more than second subordinate transceiver, more than first and second in a zone of general and electromagnetic radiation isolation be spaced from each other on the space with the space on independently, be received in radio frequency (RF) signal of this region generating more than first and second, and produce corresponding first and second subsidiary signals according to the RF signal;
Delay generator connects and second subsidiary signal is produced postpone with respect to first subsidiary signal; And
Master unit, it receives and changes first signal and the second delayed subsidiary signal, and transfer to one or more base transceiver stations (BTS) outside the zone to corresponding first and second through switching signal, so that first and second just can reproduce the information that is comprised in the RF signal through switching signal by what common processing BTS received.
Preferably, at least one in more than first subordinate transceiver and more than second subordinate transceiver spatially fully separate, so that can distinguish RF signal that receives from more than first subordinate transceiver and the RF signal that receives from more than second subordinate transceiver.
Preferably, delay generator postpones second subsidiary signal by applying single time delay.
According to preferred embodiment of the present invention, further provide to be used for carrying out method of wireless communication in electromagnetic radiation area isolated general and that the region exterior source is come, comprising:
Receive from next radio frequency (RF) signal of region exterior transmission at main transceiver unit, and produce corresponding first and second main signals according to the RF signal;
In the zone, place more than first subordinate transceiver;
Neutralize in the zone position of more than first subordinate transceiver is spatially placed more than second subordinate transceiver on the position spaced;
First main signal is transferred to more than first subordinate transceiver, and produce corresponding first subsidiary signal according to main signal;
Postpone second main signal;
The second delayed main signal is transferred to more than second subordinate transceiver, and take root and produce second subsidiary signal according to described signal;
First and second subsidiary signals are transferred to interior mobile transceiver unit, zone; And
Common first and second subsidiary signals that are transferred to mobile transceiver of handling are to reproduce the information in the RF signal that wherein is included in this zone.
Preferably, placing more than second subordinate transceiver is included in and independently locally on the locational space with more than first subordinate transceiver places more than second subordinate transceiver.
According to preferred embodiment of the present invention, the equipment that is used for radio communication further is provided, comprising:
Master unit, it is received in general and outer radio frequency (RF) signal that produces of electromagnetic radiation area isolated, and the RF conversion of signals is become first and second main signals;
Delay generator connects and second main signal is produced postpone with respect to first main signal; And
More than first subordinate transceiver and more than second subordinate transceiver, more than first and second is spaced apart from each other on the space in the zone, and described more than first and second:
Receive first and the second delayed main signal respectively, and convert thereof into first and second through switching signal, and
Respectively first and second the mobile transceiver unit in switching signal transfers to the zone, cause by what common processing mobile transceiver unit received and first and second just can reproduce the information that is comprised in the RF signal through switching signal.
Preferably, more than first and second subordinate transceiver spatially is separate.
By below in conjunction with the detailed description of accompanying drawing to preferred embodiment of the present invention, will more intactly understand the present invention, wherein:
The accompanying drawing summary
Fig. 1 is a schematic block diagram, shows an indoor covering system according to preferred embodiment of the present invention.
Preferred embodiment is described in detail
Referring now to Fig. 1,, this shows the schematic block diagram according to an indoor covering system 10 of preferred embodiment of the present invention.Building 30 is isolated basically and from the electromagnetic radiation of the base transceiver station (BTS) 12 of its outside.Mobile transceiver 36 (as the mobile phone of industrial standard) in this building is launched one type radio frequency (RF) signal that BTS12 can receive.Preferably, 36 RF signals transmitted of mobile transceiver (also it being called mobile RF here transmits) are code division multiple access (CDMA) signals by the spreading rate work of industrial standard, although principle of the present invention also can be applied to other codings and transmission plan.
First subordinate transmitting-receiving loom 26 (also it being called main subordinate transceiver here) of group and second subordinate are received and dispatched 28 (it being called diversity subordinate transceiver here) of loom group to be placed in the building 30.Preferably connect main subordinate transceiver 26 with star like arrangement by one or more movable separation/combiners 39.Alternatively, subordinate transceiver 26 connects with daisy chain or mixing star-daisy-chain configuration.Similarly, diversity subordinate transceiver 28 preferably connects with star like arrangement by one or more movable separation/combiners 43.Alternatively, subordinate transceiver 28 connects with daisy chain or mixing star-daisy-chain configuration.
Subordinate transceiver 26 spatially separates with subordinate transceiver 28, but the subordinate transceiver is on all four in structure and work in addition.Submit on October 29th, 1999, be entitled as in the U.S. Patent application of " indoor equipment coverings " and provided the work of suitable subordinate transceiver and the detailed description of structure, this application has transferred the application's assignee, quote its announcement here as a reference.Separating on the space is enough, makes when transceiver 36 transmits, can distinguish received RF signal of subordinate transmitting-receiving loom group 26 and subordinate and receive and dispatch the received RF signal of loom group 28; For example, received signal can be different in the combined aspects of amplitude, phase place, the time of advent or these and other signal parameter.Like this, main subordinate transceiver 26 fetches RF signal from mobile transceiver 36 as main RF signal, and diversity subordinate transceiver 28 receives RF signal from transceiver 36 as diversity RF signal.Except here above-mentioned spatially separate, main subordinate transceiver 26 and diversity subordinate transceiver 28 spatially are independently, so that do not have certain relation between the location of main subordinate transceiver and diversity subordinate transceiver.
As known in the art, subordinate transceiver 26 and 28 is worked by with local oscillated signal reception RF signal being carried out mixing, therefore reception RF signal is downconverted to intermediate frequency (IF) signal.IF signal from main subordinate transceiver 26 is transferred to combiner 27 via a separation/combiner 39 and cable 21 from building 30.IF signal from diversity subordinate transceiver 28 is transmitted from building 30 via a separation/combiner 43 and cable 23.A delay cell 24 is arranged on cable 23 routes, and it is preferably made by the Surface Acoustic Wave Filter as delay generator.Alternatively, delay cell 24 can comprise any standard delay unit, as long as it can add single time delay at the IF signal that diversity is launched from sender 28.Delay cell 24 added time delays preferably are in the order of magnitude of twice at least of the chip period of the modulated rf signal that transceiver 36 launched.
Combiner 27 combination is from the IF signal of main subordinate transceiver 26 with from the delayed IF signal of diversity subordinate transceiver 28.Combined I F signal is transferred to upconverter 29 in the main transceiver unit 22.In upconverter 29, local oscillator (LO) signal that is produced with the local oscillator 31 that preferably is included in the master unit 22 carries out mixing to this combination IF signal, to be rendered as the received combination RF signal of main subordinate transceiver 26 and diversity subordinate transceiver 28.Provided in the U.S. Patent application of mentioning in the above the work of suitable main transceiver unit and the detailed description of structure.
Combination RF signal is sent to BTS12 via duplexer 14 then.Preferably make BTS12 connect 47 and be connected to master unit 22 by direct cable.Alternatively, cable connects 47 and comprises transmission and/or the reception cable that BTS12 is connected to the master unit 22 that does not adopt duplexer 14.Further alternatively, BTS12 and master unit 22 are coupled by wireless connections.In preferred embodiments more of the present invention, BTS12 comprises master unit 22, has therefore saved component costs.
BTS receives and includes first that represents main signal and the composite signal of representing the second portion of delayed diversity signal like this.Should be understood that the information that is included in the composite signal can be separated the mediation reproduction in industrial standard CDMA rake receiver.
Duplexer 14 also receives the next transmitting RF signal (also it being called BTS RF here transmits) from BTS12, and this signal is transferred to the low-converter 33 that is included in the master unit 22.Low-converter 33 preferably adopts from the signal of local oscillator 31 and transmits to produce IF.This IF transmitted is transferred to separator 35, and separator 35 is divided into the first and second similar in essence IF signals to emission IF signals.The one IF signal is transferred to movable separator 39, and then is transferred to transceiver 26, and reproduce BTS RF by up-conversion there and transmit from separator.Down-conversion and up-conversion method from the next transmitting RF signal of BTS as described herein is as known in the art, and also provided detailed description to such a kind of method in the U.S. Patent application of mentioning in the above.
Make the 2nd IF signal be transferred to movable separator 43 via cable 41.Delay cell 45 is arranged on the route of cable 41, and it is preferably realized as above-mentioned delay cell 24.The big or small order of magnitude of the delay that delay cell 45 produces preferably with delay cell 24 produced the same.Delayed IF signal is transferred to subordinate transceiver 28 from movable separator 43, and reproduce delayed BTS RF by up-conversion there and transmit.
Mobile transceiver 36 receives the reproduction BTS RF signal of subordinate transceiver 26 emissions and the reproduction time-delay BTS RF signal of subordinate transceiver 28 emissions.Utilize method as known in the art then, use the BTSRF signal and obtain from the optimum RF signal of BTS12 emission through time-delay BTS RF signal.For example, if the CDMA pilot tone RF signal that is used to follow the tracks of mobile transceiver that the RF signal is BTS to be produced, then mobile transceiver 36 can be by discerning strong multipath and arrive to separate to be in harmonious proportion and reproduce pilot signal with being included in searcher in the transceiver.Alternatively, by bearing the non-cdma system of the delay of above-mentioned size here, can reproduce optimum signal.
It should be understood that above-mentioned preferred embodiment is to quote by the mode of example, and the present invention be not limited to above institute special that describe with illustrate.But scope of the present invention has comprised each combination of features described above and recombinant, and those skilled in the art has read the change and the modification of each feature that can carry out and that do not disclose in the prior art after the description of front.
Claims (11)
1. one kind is used for method of wireless communication, it is characterized in that, comprising:
In the electromagnetic radiation area isolated in general and region exterior source, place more than first subordinate transceiver;
Neutralizing in the zone, the position of more than first subordinate transceiver spatially separates and spatially independently place more than second subordinate transceiver on the position;
Locate to be received in radio frequency (RF) signal of region generating at more than first and more than second, and produce corresponding first and second subsidiary signals;
Postpone second subsidiary signal;
First and second subsidiary signal that postpones be transferred to one or more base transceiver stations (BTS) outside the zone; And
Common processing is transferred to first and second subsidiary signals of one or more BTS, is included in the information in the RF signal that produces in this zone with reproduction.
2. the method for claim 1, it is characterized in that, transmitting first and second subsidiary signals comprises from first subsidiary signal and reproduces main RF signal, and from second subsidiary signal reproduction diversity RF signal, wherein, handling first and second subsidiary signals jointly comprises from the main RF signal of reproduction and the diversity RF signal reproduction optimum RF signal of reproduction.
3. the method for claim 1, it is characterized in that, place more than second subordinate transceiver and be included in more than first the subordinate transceiver place enough far away that is separated by and place in more than second the subordinate transceiver at least one, can distinguish more than first RF signal and more than second RF signal that the subordinate transceiver is received that the subordinate transceiver is received like this.
4. the method for claim 1 is characterized in that, postpones second subsidiary signal and comprises second subsidiary signal is applied single time delay.
5. be used for the equipment of radio communication, it is characterized in that, comprising:
More than first subordinate transceiver and more than second subordinate transceiver, more than first and second is to be spaced from each other on the space with separate in a zone of general and electromagnetic radiation isolation, be received in radio frequency (RF) signal of this region generating more than first and second, and produce corresponding first and second subsidiary signals according to the RF signal;
Delay generator connects and second subsidiary signal is postponed with respect to first subsidiary signal; And
Master unit, it receives and changes first signal and delayed second subsidiary signal, and transfer to one or more base transceiver stations (BTS) outside the zone to corresponding first and second through switching signal, cause by what common processing BTS received and first and second reproduce the information that is comprised in the RF signal through switching signal.
6. equipment as claimed in claim 5, it is characterized in that, in more than first the subordinate transceiver at least one is placed on the place that fully separates with more than second subordinate transceiver, so that can distinguishes more than first RF signal and more than second RF signal that the subordinate transceiver is received that the subordinate transceiver is received.
7. equipment as claimed in claim 5 is characterized in that, delay generator postpones second subsidiary signal by applying single time delay.
8. be used for carrying out a kind of method of radio communication, it is characterized in that, comprising in electromagnetic radiation area isolated general and that the region exterior source is come:
Receive from next radio frequency (RF) signal of region exterior transmission at main transceiver unit place, and produce first and second main signals according to described RF signal;
In the zone, place more than first subordinate transceiver;
Neutralize in the zone position of more than first subordinate transceiver is spatially placed more than second subordinate transceiver on the position spaced;
First main signal is transferred to more than first subordinate transceiver, and produce first subsidiary signal according to described main signal;
Postpone second main signal;
Second main signal through time-delay is transferred to more than second subordinate transceiver, and produce second subsidiary signal according to described main signal;
First and second subsidiary signals are transferred to interior mobile transceiver unit, zone; And
Common first and second subsidiary signals that are transferred to mobile transceiver of handling are included in information in the RF signal in this zone with reproduction.
9. method as claimed in claim 8 is characterized in that, places more than second subordinate transceiver and is included in the position of more than first subordinate transceiver is spatially independently local and places more than second subordinate transceiver.
10. be used for the equipment of radio communication, it is characterized in that, comprising:
Master unit, it is received in general and outer radio frequency (RF) signal that produces of electromagnetic radiation area isolated, and the RF conversion of signals is become first and second main signals;
Delay generator connects and second main signal is postponed with respect to first main signal; And
More than first subordinate transceiver and more than second subordinate transceiver, more than first and second is spaced apart from each other on the space in the zone, and more than first and second:
Receive first and the second delayed main signal respectively, and convert them to first and second through switching signal, and
Respectively first and second the mobile transceiver unit in switching signal transfers to the zone, cause by what common processing mobile transceiver unit received and first and second reproduce the information that is comprised in the RF signal through switching signal.
11. equipment as claimed in claim 10 is characterized in that, more than first and second subordinate transceiver spatially is separate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55772200A | 2000-04-25 | 2000-04-25 | |
| US09/557,722 | 2000-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1426664A true CN1426664A (en) | 2003-06-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01808577A Pending CN1426664A (en) | 2000-04-25 | 2001-04-24 | Radio frequency coverage of enclosed regions |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1277364A1 (en) |
| JP (1) | JP2003531554A (en) |
| KR (1) | KR20020093947A (en) |
| CN (1) | CN1426664A (en) |
| AU (1) | AU2001255629A1 (en) |
| CA (1) | CA2406273A1 (en) |
| HK (1) | HK1054649A1 (en) |
| IL (1) | IL152386A0 (en) |
| MX (1) | MXPA02010543A (en) |
| WO (1) | WO2001082642A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101203015B (en) * | 2006-12-14 | 2011-01-26 | 亿阳信通股份有限公司 | Method and apparatus for determining base station wireless field strength overlay area range |
| CN101283551B (en) * | 2005-06-10 | 2012-07-11 | Adc长途电讯有限公司 | Providing wireless coverage into substantially closed environments |
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| US7599711B2 (en) * | 2006-04-12 | 2009-10-06 | Adc Telecommunications, Inc. | Systems and methods for analog transport of RF voice/data communications |
| US8676214B2 (en) | 2009-02-12 | 2014-03-18 | Adc Telecommunications, Inc. | Backfire distributed antenna system (DAS) with delayed transport |
| US8472579B2 (en) | 2010-07-28 | 2013-06-25 | Adc Telecommunications, Inc. | Distributed digital reference clock |
| US8532242B2 (en) | 2010-10-27 | 2013-09-10 | Adc Telecommunications, Inc. | Distributed antenna system with combination of both all digital transport and hybrid digital/analog transport |
| US8693342B2 (en) | 2011-10-28 | 2014-04-08 | Adc Telecommunications, Inc. | Distributed antenna system using time division duplexing scheme |
| CN103580708B (en) * | 2012-07-30 | 2016-01-27 | 京信通信系统（广州）有限公司 | A kind of transceiver arrangement, array antenna device and indoor and outdoors covering system |
| US10020850B2 (en) | 2013-02-22 | 2018-07-10 | Commscope Technologies Llc | Master reference for base station network interface sourced from distributed antenna system |
| CN105191241B (en) | 2013-02-22 | 2018-08-10 | Adc电信股份有限公司 | Universal Remote is wireless dateline |
| US9787457B2 (en) | 2013-10-07 | 2017-10-10 | Commscope Technologies Llc | Systems and methods for integrating asynchronous signals in distributed antenna system with direct digital interface to base station |
| WO2015191875A1 (en) | 2014-06-11 | 2015-12-17 | Adc Telecommunications, Inc. | Bitrate efficient transport through distributed antenna systems |
| US10499269B2 (en) | 2015-11-12 | 2019-12-03 | Commscope Technologies Llc | Systems and methods for assigning controlled nodes to channel interfaces of a controller |
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| US5513176A (en) * | 1990-12-07 | 1996-04-30 | Qualcomm Incorporated | Dual distributed antenna system |
| US5404570A (en) * | 1992-11-23 | 1995-04-04 | Telefonaktiebolaget L M Ericsson | Radio coverage in closed environments |
| US5918154A (en) * | 1995-08-23 | 1999-06-29 | Pcs Wireless, Inc. | Communications systems employing antenna diversity |
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2001
- 2001-04-24 WO PCT/US2001/013200 patent/WO2001082642A1/en active Application Filing
- 2001-04-24 KR KR1020027014264A patent/KR20020093947A/en not_active Application Discontinuation
- 2001-04-24 IL IL15238601A patent/IL152386A0/en unknown
- 2001-04-24 MX MXPA02010543A patent/MXPA02010543A/en active IP Right Grant
- 2001-04-24 AU AU2001255629A patent/AU2001255629A1/en not_active Abandoned
- 2001-04-24 JP JP2001578144A patent/JP2003531554A/en active Pending
- 2001-04-24 EP EP01928813A patent/EP1277364A1/en not_active Withdrawn
- 2001-04-24 CA CA002406273A patent/CA2406273A1/en not_active Abandoned
- 2001-04-24 CN CN01808577A patent/CN1426664A/en active Pending
-
2003
- 2003-09-23 HK HK03106825.5A patent/HK1054649A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101283551B (en) * | 2005-06-10 | 2012-07-11 | Adc长途电讯有限公司 | Providing wireless coverage into substantially closed environments |
| CN101203015B (en) * | 2006-12-14 | 2011-01-26 | 亿阳信通股份有限公司 | Method and apparatus for determining base station wireless field strength overlay area range |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20020093947A (en) | 2002-12-16 |
| MXPA02010543A (en) | 2003-05-14 |
| EP1277364A1 (en) | 2003-01-22 |
| WO2001082642A1 (en) | 2001-11-01 |
| JP2003531554A (en) | 2003-10-21 |
| HK1054649A1 (en) | 2003-12-05 |
| AU2001255629A1 (en) | 2001-11-07 |
| CA2406273A1 (en) | 2001-11-01 |
| IL152386A0 (en) | 2003-05-29 |
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