CN101088231A - Apparatus for using a wireless communication base station in common - Google Patents
Apparatus for using a wireless communication base station in common Download PDFInfo
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- CN101088231A CN101088231A CNA2005800448214A CN200580044821A CN101088231A CN 101088231 A CN101088231 A CN 101088231A CN A2005800448214 A CNA2005800448214 A CN A2005800448214A CN 200580044821 A CN200580044821 A CN 200580044821A CN 101088231 A CN101088231 A CN 101088231A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
Abstract
A wireless communication base station sharing apparatus for sharing one antenna between a main system and a subsystem is provided. In the wireless communication base station sharing apparatus, a first signal combiner/distributor is connected to a transmission/reception signal line of a main system duplexer through a first port, distributes a signal received through the first port to second and third ports, combines the signals received through the second and third ports according to the phases of the signals, and provides the combined signal through the first port or a fourth port. A second signal combiner/distributor is connected to a transmission/reception signal line of a subsystem duplexer through a fifth port and the antenna through an eighth port, distributes a signal received through the fifth port to sixth and seventh ports, combines the signals received through the sixth and seventh ports according to the phases of the signals, and provides the combined signal through the fifth or eighth port. A first filter is provided in a signal path between the second port of the first signal combiner/distributor and the sixth port of the second signal combiner/distributor. A second filter is provided in a signal path between the third port of the first signal combiner/distributor and the seventh port of the second signal combiner/distributor.
Description
Denomination of invention
Share the device of radio communication base station
Invention field
The present invention generally relates to wireless communication system, more specifically, relates to the radio communication base station sharing means that the wireless communication system that is used for being shared in configuration and can provides the different frequency bands service is shared antenna and service cable (feeder cable).
Background technology
Shown in Figure 1A, 1B and 1C, a plurality of service providers provide service by the stand-alone base station (BS) 10 and 12 in honeycomb, CDMA, PCS and gsm wireless communication system and other wireless communication systems.For each BS the redundancy investment that caused is installed and in adjacent area the unnecessary existence of too many BS cause the reduction that between BS, causes signal quality owing to the phase mutual interference.
Take place as recent, by integrated service provider's frequency band, a service provider has incorporated the provider of other services into, thereby various services need be provided.In this case, just need be with existing system and the systematic unity that is added to reduce cost.A service provider can zones of different in overseas be assigned with different frequencies.He must the local ground BS system of configuration effort in different frequency bands.
In order to overcome this problem, developed the technology of shared BS.A technology wherein is to share BS antenna and service cable by the four new multiplexers 132 (quadroplexer) of the frequency band of existing BS system such as the sub-BS system that uses the system 10 (system A) can cover shown in Fig. 1 C and for example system 12 (system B) etc.
Such four multiplexers (quadroplexer) of this Technology Need manufacturing are shared antenna and service cable to allow two systems.And, under the service provider's that different frequency bands is distributed in zones of different situation, need to make a lot of four multiplexers (quadroplexer).If the frequency band of subsystem has changed in subsystem work, then just need new four multiplexers (quadroplexer) that antenna is shared with service cable and main system.If added a plurality of subsystems, then just need to make a plurality of new four multiplexers (quadroplexer).
As mentioned above, owing in traditional technology, must make new four multiplexers (quadroplexer) shared antenna and service cable between existing main system and the subsystem that added.Therefore, manufacturing cost and management cost have been increased.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of radio communication BS sharing means, it allows existing main BS system and no matter BS antenna and service cable are shared and at an easy rate at the frequency band of the sub-BS system neutron BS system of configuration except that existing main BS system by the sub-BS system that added.
Another object of the present invention provides a kind of radio communication BS sharing means, it allows existing main BS system and the sub-BS system that added shares BS antenna and service cable at an easy rate and need not to use extra equipment, even if the frequency band of main BS system and sub-BS system has changed in the sub-BS system of configuration except that existing main BS system.
Further purpose of the present invention provides a kind of radio communication BS sharing means, and it is no matter a plurality of sub-BS system that adds all allows main BS system and sub-shared at an easy rate antenna of BS system and service cable.
Above-mentioned purpose obtains by the radio communication base station sharing means that is provided for being shared in an antenna between main system and subsystem.In this radio communication base station sharing means, first signal combiner/distributor is connected to the transmitting/receiving signal line of main system duplexer by first port, will be by the signal allocation to the second and the 3rd port of first port reception, the signal that receives according to the phase place merga pass second of signal and the 3rd port, and the signal of merging is provided by the first or the 4th port.Secondary signal combiner/distributor is connected to the transmitting/receiving signal line of subsystem duplexer and is connected to antenna by the 8th port by five-port, the signal allocation to the six and the 7th port that will receive by five-port, the signal that receives according to the phase place merga pass the 6th of signal and the 7th port, and the signal of merging is provided by the 5th or the 8th port.First filter is provided in the signal path between the 6th port of second port of first signal combiner/distributor and secondary signal combiner/distributor.Second filter is provided in the signal path between the 7th port of the 3rd port of first signal combiner/distributor and secondary signal combiner/distributor.
Description of drawings
Figure 1A, 1B and 1C are the structure charts that shows traditional antenna sharing method;
Fig. 2 is the structure chart according to the radio communication BS sharing means of the embodiment of the invention;
Fig. 3 is the diagrammatic sketch that is presented at the operation of the hybrid coupler shown in Fig. 2 (hybrid coupler);
Fig. 4 is the structure chart of radio communication BS sharing means according to another embodiment of the invention;
Fig. 5 is the diagrammatic sketch that is presented at the operation of the magic T shown in Fig. 4 (magic T);
Fig. 6 is the structure chart according to the radio communication BS sharing means of third embodiment of the invention;
Fig. 7 is the structure chart that has added circulator in the radio communication BS sharing means shown in Fig. 6;
Fig. 8 is the structure chart according to the radio communication BS sharing means of fourth embodiment of the invention;
Fig. 9 is the structure chart that has added circulator in the radio communication BS sharing means shown in Fig. 8;
Figure 10 is the structure chart according to the radio communication BS sharing means of fifth embodiment of the invention;
Figure 11 is the structure chart that has added circulator in the radio communication BS sharing means shown in Figure 10;
Embodiment
Below with reference to accompanying drawing preferred embodiment of the present invention is described.In the following description, because known function or structure can make the present invention depart from unnecessary details, therefore omit description to it.
Fig. 2 is the structure chart according to the radio communication BS sharing means of the embodiment of the invention.With reference to figure 2, so make up radio communication BS sharing means 20 to be shared in the antenna of 24 of main system 22 with the 3rd duplexer 222 and subsystem with the 4th duplexer 242.This BS sharing means 20 comprises the main system with the 3rd duplexer; Subsystem with the 4th duplexer; First hybrid coupler 202, it is used for also exporting the transmission signals of the distribution with out of phase by first port assignment from the transmission signals that main system 22 receives; Be connected to first duplexer 206 of second port of first hybrid coupler 202, it is used for to the transmission of main system 22 and received signal Tx1 and Rx1 filtering; Be connected to second duplexer 208 of the 3rd port of first hybrid coupler 202, it is used for to the transmission of main system 22 and received signal Tx1 and Rx1 filtering; With second hybrid coupler 204 with the five-port that is connected to subsystem, it is used for by the 6th and the 7th port from first and second duplexers 206 and 208 received signals and combined signal.
Antenna is connected to the 8th port of second hybrid coupler 204.First and second duplexers 206 and 208 comprise and are used for only allowing the transmission of main system 22 and the filter that frequency acceptance band passes through.If main system 22 in position with subsystem 24 exchange, then first and second duplexers 206 and 208 can comprise and only allow the transmission of subsystem 24 and the filter that frequency acceptance band passes through.Third and fourth duplexer 222 and 242 all is a full range band duplexer.
With reference to figure 3, the operation of hybrid coupler is described.Hybrid coupler characteristic ground function is partly to extract certain signal power and a signal power is assigned as two or more specific signal power.The present invention will describe a kind of function in back.Export by the second and the 3rd port by the signal that first port receives, its power is divided into two halves.This signal is not by the output of the 4th port.The phase difference that between output signal, has 90 degree.In opposite situation, receive by the second and the 3rd port if having the signal of 90 degree phase differences, then they are merged output.
More specifically,, then merge and output signal by first port if the signal that receives by second port has the phase place of 90 degree and has the phase place of 180 degree by the signal that the 3rd port receives, rather than by the 4th port.
If the signal that receives by second port has the phase place of 180 degree and has the phase place of 90 degree by the signal that the 3rd port receives, then merge and output signal by the 4th port, rather than by first port.This parts with distributing function of signal power are hybrid ring (hybrid ring), branch line directional coupler (branch-line directional coupler), 3-dB directional coupler and magic T (magic T).
＜transmission in main system 〉
＜reception in main system 〉
Signal allocation to the six and the 7th port that second hybrid coupler 204 will receive from antenna by the 8th port, the phase place of this signal are respectively the 6th and the 7th port and revolve and turn 90 degrees and 180 degree.First hybrid coupler 202 receives from the next signal that has passed through first and second duplexers 206 and 208 of the 6th and the 7th port by the second and the 3rd port, merges these signals, and exports the signal that merges by first port.The signal that comes from first port receives main system 22 by the 3rd duplexer 222.
＜transmission in subsystem 〉
＜reception in subsystem 〉
Simultaneously, during exporting transmission signals Tx1 by first hybrid coupler 202, can not produce reflection in theory from main system 22.But in the reality, though very faint, some among the transmission signals Tx1 still can be by the output of the 4th port.In order to address this problem, provide load resistance TERM to isolate at the 4th port.
Fig. 4 is the structure chart of radio communication BS sharing means according to another embodiment of the invention.With reference to figure 4, radio communication BS sharing means 40 comprises the main system with the 3rd duplexer; Subsystem with the 4th duplexer; The first magic T402, it is used for by first port assignment from the transmission signals of the 3rd duplexer 222 receptions of main system 22 and the transmission signals with out of phase that output is distributed; First phase rotation device 412, it is used for from the second port received signal of the first magic T402 and the phase place of rotating received signal; First duplexer 406, it is used for to the signal filtering from 412 receptions of first phase rotation device; Second phase rotation device 414, it is used for rotating the signal that receives from first duplexer 406; Second duplexer 408, it is used for the signal filtering that receives from the 3rd port of the first magic T402; With the second magic T404, the five-port that it has the 4th duplexer 242 that is connected to subsystem 24 is used for respectively receiving from the signal of second phase rotation device 414 and second duplexer 408 and merging these signals by the 6th and the 7th port.
Antenna is connected to the 8th port of magic T404.So make up first and second duplexers 406 and 408 only to allow the transmission and the frequency acceptance band of main system 22 pass through.If main system 22 in position with subsystem 24 exchange, then first and second duplexers 406 and 408 can comprise and only allow the transmission of subsystem 24 and the filter that frequency acceptance band passes through.Third and fourth duplexer 222 and 242 all is a full range band duplexer.
With reference to figure 5, the basic operation of magic T is described.The signal that receives by first port is assigned to the second and the 3rd port with 180 degree phase differences.On the other hand, the signal that receives by the 4th port is assigned to the second and the 3rd port with same phase.
Receive by the second and the 3rd port if having the signal of 180 phase differences in same frequency, then they merge and output by first port.If the signal of same phase receives by the second and the 3rd port, then they merge and output by the 4th port.
＜transmission in main system 〉
From the transmission signals TX1 of main system 22 by the 3rd duplexer 222 and be imported into first port of the first magic T402.The first magic T402 gives received signal allocation the second and the 3rd port with 180 degree phase differences.The signal that comes from the 3rd port is by second duplexer 408 and be imported into the 7th port of the second magic T404.The phase place of the signal from second port is revolved first phase rotation device 412 and is turn 90 degrees.By behind first duplexer 406, revolve from signal phase place second phase rotation device 414 of first phase rotation device 412 and to turn 90 degrees the 6th port that then is output to the second magic T404.Therefore, in the second magic T404, has identical phase place with the signal of the 7th port reception by the 6th.The signal that the second magic T404 has merged these signals and merged by the output of the 8th port.Go out by antenna transmission from the signal that the 8th port comes.
＜reception in main system 〉
The second magic T404 by the 8th port from antenna receiving signal and with this signal allocation to the 6th and the 7th port with same phase.Offer the 3rd port of the first magic T402 by second duplexer 408 from the next signal of the 7th port.Signal phase place second phase rotation device 414 of coming from the 6th port of the second magic T404 is revolved and is turn 90 degrees, by first duplexer 406, then again in first phase rotation device 412 phase place revolve and turn 90 degrees, offer second port of the first magic T402 then.Like this, the first magic T402 receives the signal with 180 degree phase differences by the second and the 3rd port, merges them, and exports the signal that merges by first port.Offer the receiver of main system 22 by the 3rd duplexer 222 from the next signal of first port.
＜transmission in subsystem 〉
From the transmission signals TX2 of subsystem 24 by the 4th duplexer 242 and offer the five-port of the second magic T404.The second magic T404 gives the signal allocation that receives the 6th and the 7th port with 180 degree phase differences.The signal that comes from the 7th port reflects fully and feeds back to the 7th port from second duplexer 208.Signal phase place second phase rotation device 414 of coming from the 6th port revolve turn 90 degrees in, it also reflects fully from first duplexer 406, phase place is revolved and is turn 90 degrees in second phase rotation device 414 again, and feeds back to the 6th port.Like this, the second magic T404 receives the signal with same phase by the 6th and the 7th port, merges them, and by the output of the 8th port.Launch by antenna from the signal that the 8th port comes.
＜reception in subsystem 〉
The second magic T404 gives the 6th and the 7th port with same phase by the 8th port from antenna receiving signal and with the signal allocation that receives.The signal that comes from the 7th port reflects and feeds back to the 7th port fully from second duplexer 208.When phase place was revolved and turn 90 degrees young second phase rotation device 414 of the signal that comes from the 6th port, it also reflected fully from first duplexer 406, and phase place is revolved and turn 90 degrees in second phase rotation device 414 again, and feeds back to the 6th port.Like this, the second magic T404 receives the signal with 180 degree phase differences by the 6th and the 7th port, merges them, and exports the signal that merges by five-port.Offer the receiver of subsystem 24 by the 4th duplexer 242 from the next signal of five-port.
Simultaneously, during magic T402 exports transmission signals Tx1 by first from main system 22, can not produce reflection in theory.But in the reality, though very faint, some among the transmission signals Tx1 still can be by the output of the 4th port.In order to address this problem, provide load resistance TERM to isolate at the 4th port.
Can predict, as another embodiment, first and second duplexers 206,208,406 and 408 can be realized by variable frequency filter, rather than fixed filter frequently.The applicant has submitted the application of the variable frequency filter that uses in variable frequency range, as korean patent application No.2003-58556, No.2004-36623 and No.2004-46103.
In this case, taked active measure to come in the transmission frequency TX1 of main system 22 or subsystem 24 or the variation among the TX2.That is,, then also can handle this situation and need not to use extra equipment even if the frequency band that another system is joined existing system or existed system has changed.
Fig. 6 is the structure chart according to the radio communication BS sharing means of third embodiment of the invention.With reference to figure 6, so make up radio communication BS sharing means 60 so that between main system 22 with the 3rd duplexer 222 and subsystem 26, share antenna.This BS sharing means 60 comprises the main system with the 3rd duplexer; Subsystem; First hybrid coupler 602, it is used to distribute by first port also exports the signal with out of phase that is distributed from the transmission signals of the 3rd duplexer 222 receptions with by the 4th port from the signal that antenna receives; First band pass filter 606, it is used for the signal filtering that receives from second port of first hybrid coupler 602; Second hybrid coupler 604, it is used for by the 6th and the 7th port from first and second band pass filters 606 and 608 received signals and merge these signals; Be connected to the five-port of second hybrid coupler 604 and the 4th duplexer 622 of subsystem 26; Be connected the receiver Rx of the 4th duplexer 622 and the distributor 624 between the subsystem 26, it is used to distribute the signal that receives from the receiver Rx of the 4th duplexer 622; With receiving filter 626, it is to the distributing signal filtering that receives from distributor 624 and will this filtered signal offer the 4th port of first hybrid coupler 602.
Antenna is connected to the 8th port of second hybrid coupler 604.The filter that third and fourth duplexer 222 and 622 receiver Rx and receiving filter 626 can be passed through by the receive frequency that can make main system 22 and subsystem 26, or the full range band receiving filter that the frequency acceptance band that is used for making main system 22 and subsystem 26 in specific bandwidth (for example, PCS frequency band) passes through is realized.So make up first and second band pass filters 606 and 608 so that only pass through the transmission band of main system 22.
If main system 22 is exchanged with subsystem 26 rightly, then first and second duplexers 606 and 608 can comprise the filter that only allows the transmission band of subsystem 26 pass through.If the 4th duplexer 622 Already in the subsystem 26, then can not provide it.Needless to say, in this case, subsystem 26 must have distributor 624.
The operation of radio communication BS sharing means below will be described.
＜transmission in main system 〉
First hybrid coupler 602 receives the transmission signals TX1 that passed through the 3rd duplexer 222 and gives the second and the 3rd port with the signal allocation that receives from main system 22 by first port, and its phase place is respectively the second and the 3rd port and revolves and turn 90 degrees and 180 degree.Like this, the signal of distribution has just had the phase difference of 90 degree.The signal that comes from the second and the 3rd port is by only allowing first and second band pass filters 606 that the transmission signals Tx1 of main system 22 passes through and 608 and be provided for the 6th and the 7th port of second hybrid coupler 604.Second hybrid coupler 604 merges signal that receives and the signal that merges by the output of the 8th port.Launch by antenna from this signal that the 8th port comes.
＜reception in main system 〉
Signal allocation to the six and the 7th port that second hybrid coupler 604 will will receive from antenna by the 8th port, the phase place of this signal is respectively the 6th and the 7th port Rotate 180 degree and 90 degree.The signal that comes from the 6th and the 7th port reflects fully and feeds back to the 6th and the 7th port from first and second band pass filters 606 and 608.The signal of feedback merges and output by five-port.Distributor 624 receives the signal from five-port and distributes received signal by the 4th duplexer 622.Offer subsystem 26 and other the 4th port that offers first hybrid coupler 602 by one in the signal that receiving filter 626 distributed.First hybrid coupler 602 is given received signal allocation the second and the 3rd port with 90 degree phase differences.The signal that comes from the second and the 3rd port reflects fully and feeds back to the second and the 3rd port from first and second band pass filters 606 and 608.The signal of these feedbacks merges and output by first port.The signal that comes from first port receives main system 22 by the 3rd duplexer 222.
＜transmission in subsystem 〉
Offer second hybrid coupler 604 from the transmission signals TX2 of subsystem 26 by the 4th duplexer 622 and by five-port.Second hybrid coupler 604 is given the 6th and the 7th port with received signal allocation, and its phase place is respectively the 6th and the 7th port Rotate 180 degree and 90 degree.Like this, the signal that is distributed has just had the phase difference of 90 degree.The signal that comes from the 6th and the 7th port reflects fully and feeds back to the 6th and the 7th port from first and second band pass filters 606 and 608.Merge the signal and the output of feedback by the 8th port.Launch by antenna from this signal that the 8th port comes.
＜reception in subsystem 〉
The signal that receives by antenna offers the 8th port of second hybrid coupler 608 and it is distributed to the 6th and the 7th port, and its phase place is respectively the 6th and the 7th port Rotate 180 degree and 90 degree.Like this, the signal that is distributed has just had the phase difference of 90 degree.The signal that comes from the 6th and the 7th port reflects fully and feeds back to the 6th and the 7th port from first and second band pass filters 606 and 608.Merge the signal and the output of feedback by five-port.The signal that comes from five-port is by the 4th duplexer 622 and offer the receiver of subsystem 26 by distributor 624.
Simultaneously, during exporting transmission signals Tx1 by first hybrid coupler 602, can not produce reflection in theory from main system 22.But in the reality, though very faint, some among the transmission signals Tx1 still can be by the output of the 4th port.In order to address this problem, between the 4th port of the receiving filter 626 and first hybrid coupler 602, also provide circulator 628 load resistances to isolate, as shown in Figure 7.
Fig. 8 is the structure chart according to the radio communication BS sharing means of fourth embodiment of the invention.With reference to figure 8, so make up radio communication BS sharing means 80 so that be shared in main system 22 and the antenna of 26 of subsystems with the 3rd duplexer 222.This BS sharing means 80 comprises the main system with the 3rd duplexer; Subsystem; The first magic T802, it will give the second and the 3rd port with out of phase from the signal allocation that the 3rd duplexer 222 receives by first port, and will give the second and the 3rd port with same phase from the signal allocation that antenna receives by the 4th port; First phase rotation device 812, it is used for also rotating from the second port received signal of the first magic T802 phase place of the signal that is received; First band pass filter 806, it is used for the signal filtering from 812 receptions of first phase rotation device; Second phase rotation device 814, it is used to rotate the signal that receives from first band pass filter 806; Second band pass filter 808, it is used for the signal filtering that receives from the 3rd port of the first magic T802; With the second magic T804, it is used for respectively by the 6th and the 7th port from second phase rotation device 814 and second band pass filter, 808 received signals and merge these signals; Be connected the five-port of the second magic T804 and the 4th duplexer 822 between the subsystem 26; Be connected the receiver Rx of the 4th duplexer 822 and the distributor 824 between the subsystem 26, it is used to distribute the signal that receives from the receiver Rx of the 4th duplexer 822; With receiving filter 826, it is used for the signal filtering that is distributed from distributor 824 and filtered signal is offered the 4th port of the first magic T802.
Antenna is connected to the 8th port of the second magic T804.Third and fourth duplexer 222 and 822 receiver Rx, the receiving filter that passes through by the receive frequency that can not make main system 22 and subsystem 26 with receiving filter 826, or the full range band filter that the frequency acceptance band that is used for making main system 22 and subsystem 26 in specific bandwidth (for example, PCS frequency band) passes through is realized.First and second band pass filters 806 and 808 only pass through the transmission band of main system 22.If main system 22 exchanges with subsystem 26 rightly, then first and second band pass filters 806 and 808 only pass through the transmission and the frequency acceptance band of subsystem 26.If the filter such as the 4th duplexer 822 grades has been present in the subsystem 26, then can not provide the 4th duplexer 622.
The operation of radio communication BS sharing means below will be described.
＜transmission in main system 〉
From the transmission signals TX1 of main system 22 by the 3rd duplexer 222 and be provided for first port of the first magic T802.The first magic T802 gives received signal allocation the second and the 3rd port with 180 degree phase differences.Offer the 7th port of the second magic T804 by second band pass filter 808 from the next signal of the 3rd port.The phase place of the signal from second port is revolved first phase rotation device 812 and is turn 90 degrees.By behind first band pass filter 806, revolve from signal phase place second phase rotation device 808 of first phase rotation device 812 and to turn 90 degrees the 6th port that then is output to the second magic T804.Therefore, in the second magic T804, has identical phase place with the signal of the 7th port reception by the 6th.The signal that the second magic T804 merges these signals and merges by the output of the 8th port.Go out by antenna transmission from the signal that the 8th port comes.
＜reception in main system 〉
The second magic T804 by the 8th port from antenna receiving signal and with this signal allocation to the 6th and the 7th port with same phase.The signal that comes from the 7th port reflects fully and feeds back to the 7th port from second band pass filter 808.Signal phase place second phase rotation device 814 of coming from the 6th port of the second magic T804 is revolved and is turn 90 degrees, from 806 reflections of first band pass filter, and once more in second phase rotation device 814 phase place revolve and turn 90 degrees, then offer the 6th port of the second magic T804.Like this, the second magic T804 receives the signal with 180 degree phase differences by the 6th and the 7th port, merges them, and exports the signal that merges by five-port.Signal from five-port is by the 4th duplexer 822 and be divided into two signals distributor 824.Be provided for subsystem 26 and another is provided for the 4th port of the first magic T802 by one in the signal that receiving filter 826 distributed.The first magic T802 will give the second and the 3rd port with same phase by the signal allocation that the 4th port is received.The signal that comes from the 3rd port reflects fully and is fed back to the 3rd port from second band pass filter 808.Though signal phase place first phase rotation device 812 of coming from second port is revolved and turn 90 degrees, it is also from 806 reflections of first band pass filter, and revolves once more in first phase rotation device 812 and turn 90 degrees, and then is provided to second port of the first magic T802.Like this, the first magic T802 receives the signal with 180 degree phase differences by the second and the 3rd port, merges them, and exports the signal that merges by first port.The signal that comes from first port is by the 3rd duplexer 222 and offer the receiver of main system 22 by the 3rd duplexer 222.
＜transmission in subsystem 〉
From the transmission signals TX2 of subsystem 26 by the 4th duplexer 822 and offer the five-port of the second magic T804.The second magic T804 gives received signal allocation the 6th and the 7th port with 180 degree phase differences.The signal that comes from the 7th port reflects fully and is fed back to the 7th port from second band pass filter 808.Signal phase place second phase rotation device 814 of coming from the 6th port revolve turn 90 degrees in, it also reflects fully from first band pass filter 806, and once more in second phase rotation device 814 phase place revolve and turn 90 degrees, and be fed back to the 6th port.Like this, the second magic T804 receives the signal with same phase by the 6th and the 7th port, merges them, and exports the signal that merges by the 8th port.Launch by antenna from the signal that the 8th port comes.
＜reception in subsystem 〉
The second magic T804 receives the signal that comes from antenna and gives the 6th and the 7th port with same phase with the signal allocation that is received by the 8th port.The signal that comes from the 7th port reflects fully and is fed to the 7th port from second band pass filter 808.Signal phase place second phase rotation device 814 of coming from the 6th port revolve turn 90 degrees in, it also reflects fully from first band pass filter 806, and once more in second phase rotation device 814 phase place revolve and turn 90 degrees, and be fed back to the 6th port.Like this, the second magic T804 receives the signal with 180 degree phase differences by the 6th and the 7th port, merges them, and exports the signal that merges by five-port.The signal that comes from five-port offers distributor 824 by the 4th duplexer 822.Distributor 824 distributes the signal that receives and with a receiver of exporting to subsystem 26 in two distributing signals.
Simultaneously, during magic T802 exports transmission signals Tx1 by first from main system 22, can not produce reflection in theory.But in the reality, though very faint, some among the transmission signals Tx1 still can be by the output of the 4th port.In order to address this problem, can further between the 4th port of the receiving filter 826 and the first magic T802, provide circulator 828 to isolate, as shown in Figure 9.
Can predict, as another embodiment, first and second band pass filters 806 and 808 can be realized by variable frequency filter, rather than fixed filter frequently.In this case, take active measure to come in the transmission frequency TX1 of main system 22 or subsystem 26 or the variation among the TX2.That is,, also can handle this situation and need not to use extra equipment even if the frequency band that another system is joined existing system or existed system has changed.
Figure 10 is the structure chart according to the radio communication BS sharing means of fifth embodiment of the invention.With reference to Figure 10, so make up radio communication BS sharing means 90 so that between main system 22 with the 3rd duplexer 222 and subsystem 26, share antenna.This BS sharing means 90 comprises the first magic T902, and it is used for will distributing to third and fourth port with same phase and the signal that has out of phase by first port assignment from the transmission signals that the 3rd duplexer 222 receives by the 4th port; First phase rotation device 912, it is used for also rotating from the 3rd port received signal of the first magic T902 phase place of the signal that is received; Second band pass filter 908, it is used for the signal filtering from 912 receptions of first phase rotation device; First band pass filter 906, it is used for the signal filtering that receives from second port of the first magic T; Second phase rotation device 914, it is used to rotate the signal that receives from first band pass filter 906; The second magic T904, it is used for passing through the 6th and the 7th port respectively from second phase rotation device 914 and second band pass filter, 908 received signals and combined signal; Be connected the five-port of the second magic T904 and the 4th duplexer 922 between the subsystem 26; Be connected the receiver Rx of the 4th duplexer 922 and the distributor 924 between the subsystem 26, it is used to distribute the signal that receives from the receiver Rx of the 4th duplexer 922; With receiving filter 926, it is used for the signal filtering of the distribution that receives from distributor 924 and filtered signal is offered first port of the first magic T902.
Antenna is connected to the 8th port of the second magic T904.Third and fourth duplexer 222 and 922 receiver Rx, with 926 the receiving filters that accept filter by receive frequency that can not be by main system 22 and subsystem 26, or the full range band filter that is used in specific bandwidth (for example, PCS frequency band) frequency acceptance band by main system 22 and subsystem 26 is realized.First and second band pass filters 906 and 908 only pass through the transmission band of main system 22.If main system 22 exchanges with subsystem 26 rightly, then first and second band pass filters 906 and 908 only pass through the transmission and the frequency acceptance band of subsystem 26.If the filter such as the 4th duplexer 922 grades has been present in the subsystem 26, then can not provide the 4th duplexer 922.
The operation of radio communication BS sharing means below will be described.
＜transmission in main system 〉
Offer the 4th port of the first magic T902 by the 3rd duplexer 222 from the transmission signals TX1 of main system 22.The first magic T902 gives received signal allocation the second and the 3rd port with same phase.Revolve the 7th port that turn 90 degrees and offer the second magic T904 by second band pass filter 908 from signal phase place first phase rotation device 912 that the 3rd port comes.After passing through first band pass filter 906, the signal phase place second phase rotation device 914 from second port is revolved and is turn 90 degrees the 6th port that then is provided for the second magic T904.Therefore, in the second magic T904, has identical phase place with the signal of the 7th port reception by the 6th.The signal that the second magic T904 merges these signals and merges by the output of the 8th port.Go out by antenna transmission from the signal that the 8th port comes.
＜reception in main system 〉
The second magic T904 by the 8th port from antenna receiving signal and with this signal allocation to the 6th and the 7th port with same phase.The signal that comes from the 7th port reflects fully and feeds back to the 7th port from second band pass filter 908.Signal phase place second phase rotation device 914 of coming from the 6th port of the second magic T904 is revolved and is turn 90 degrees, from 906 reflections of first band pass filter, and once more in second phase rotation device 914 phase place revolve and turn 90 degrees, phase place Rotate 180 degree then offers the 6th port of the second magic T904 like this, always.Like this, the second magic T904 receives the signal with 180 degree phase differences by the 6th and the 7th port, merges them, and exports the signal that merges by five-port.Signal from five-port is by the 4th duplexer 922 and be divided into two signals distributor 924.Be provided for subsystem 26 and another is provided for first port of the first magic T902 by one in the signal that receiving filter 926 distributed.The first magic T902 will give the second and the 3rd port with 180 phase differences by the signal allocation that first port is received.The signal that comes from second port reflects fully and is fed back to second port from first band pass filter 906.Though signal phase place first phase rotation device 912 of coming from the 3rd port is revolved and turn 90 degrees, it is also from 906 reflections of first band pass filter, and revolves once more in first phase rotation device 912 and turn 90 degrees, and then is provided to second port of the first magic T902.Like this, the first magic T902 receives the signal with same phase by the second and the 3rd port, merges them, and exports the signal that merges by the 4th port.The signal that comes from the 4th port is by the 3rd duplexer 222 and offer the receiver of main system 22 by the 3rd duplexer 222.
＜transmission in subsystem 〉
From the transmission signals TX2 of subsystem 26 by the 4th duplexer 922 and offer the five-port of the second magic T904.The second magic T904 gives received signal allocation the 6th and the 7th port with 180 degree phase differences.The signal that comes from the 7th port reflects fully and is fed back to the 7th port from second band pass filter 908.Signal phase place second phase rotation device 914 of coming from the 6th port revolve turn 90 degrees in, it also reflects fully from first band pass filter 906, and once more in second phase rotation device 914 phase place revolve and turn 90 degrees, and be fed back to the 6th port.Like this, the second magic T904 receives the signal with same phase by the 6th and the 7th port, merges them, and exports the signal that merges by the 8th port.Launch by antenna from the signal that the 8th port comes.
＜reception in subsystem 〉
The second magic T904 receives the signal that comes from antenna and gives the 6th and the 7th port with same phase with the signal allocation that is received by the 8th port.The signal that comes from the 7th port reflects fully and is fed to the 7th port from second band pass filter 908.Signal phase place second phase rotation device 914 of coming from the 6th port revolve turn 90 degrees in, it also reflects fully from first band pass filter 906, and once more in second phase rotation device 914 phase place revolve and turn 90 degrees, and be fed back to the 6th port.Like this, the second magic T 904 receives the signal with 180 degree phase differences by the 6th and the 7th port, merges them, and exports the signal that merges by five-port.The signal that comes from five-port offers distributor 924 by the 4th duplexer 922.Distributor 924 distributes the signal that receives and with a receiver of exporting to subsystem 26 in two distributing signals.
Simultaneously, during magic T902 exports transmission signals Tx1 by first from main system 22, can not produce reflection in theory.But in the reality, though very faint, some among the transmission signals Tx1 still can be by the output of the 4th port.In order to address this problem, can further between the 4th port of the receiving filter 926 and the first magic T902, provide circulator 928 to isolate, as shown in figure 11.
Can predict, as another embodiment, first and second band pass filters 906 and 908 can be realized by variable frequency filter, rather than fixed filter frequently.In this case, take active measure to come in the transmission frequency TX1 of main system 22 or subsystem 26 or the variation among the TX2.That is,, also can handle this situation and need not to use extra equipment even if the frequency band that another system is joined existing system or existed system has changed.
Though the present invention shown and be described with reference to its accompanying drawing, what it will be appreciated by those skilled in the art that is, can make various variations in form and details not deviating under the spirit and scope of the present invention that limited by claims.
Industrial applicibility
As mentioned above, radio communication BS sharing means according to the present invention makes main BS system and joins the master The sub-BS system with different frequency bands in the BS system can share antenna and service cable at an easy rate. No matter The frequency band of subsystem how, can both share antenna and service cable. Even if this radio communication BS shared system is right A lot of subsystems also can be realized simply. No matter how many frequency bands of main system and subsystem is, it all can With reply. Particularly when using variable frequency filter, to the combination of various frequencies, a model is just enough. Like this, just no longer need to develop different models. In addition, just can provide product in a short time, owing to need not to make Therefore a lot of models have saved management cost, and can make on a large scale, thereby have reduced manufacturing cost. By In can change frequency band in operate wireless communication BS sharing means, therefore can adopt vigorous measures immediately should To between the service provider or the variation between local frequency shift. Than traditional technology, need not unloading and heavy The new installation, thus provide cost savings.
Claims (11)
1. radio communication base station sharing means that is used to be shared in an antenna between main system and the subsystem comprises:
Be connected to the first signal combiner/distributor of transmitting/receiving signal line of the duplexer of main system by first port, be used for the signal allocation to the second and the 3rd port that will receive by first port, signal that receives according to the phase place merga pass described second and the 3rd port of signal and the signal that merges by the output of the first or the 4th port;
Be connected to the transmitting/receiving signal line of subsystem duplexer and be connected to the secondary signal combiner/distributor of antenna by the 8th port by five-port, be used for the signal allocation to the six and the 7th port that will receive by five-port, and signal that receives according to the phase place merga pass the 6th and the 7th port of signal and the signal that merges by the output of the 5th or the 8th port;
First filter is arranged in the signal path between the 6th port of second port of first signal combiner/distributor and secondary signal combiner/distributor; With
Second filter is arranged in the signal path between the 7th port of the 3rd port of first signal combiner/distributor and secondary signal combiner/distributor.
2. radio communication base station sharing means according to claim 1, wherein said first and second signal combiner/distributors are hybrid couplers, and described first and second filters are to be used for allowing the transmission of main system and the duplexer that frequency acceptance band passes through.
3. radio communication base station sharing means according to claim 1, wherein said first and second signal combiner/distributors are magic T, and described first and second filters are to be used for allowing the transmission of main system and the duplexer that frequency acceptance band passes through, also comprise first phase rotation device in the signal path that is provided between described first filter and the described first signal combiner/distributor, and be provided at second phase rotation device in the signal path between described first filter and the described secondary signal combiner/distributor.
4. according to claim 1 or 3 described radio communication base station sharing means, the 4th port that also is included in described first signal combiner/distributor has the load resistance of isolation features.
5. radio communication base station sharing means according to claim 1, wherein said first and second combiners/distributor is a hybrid coupler, and described first and second filters are to be used for allowing the transmission of main system and the band pass filter that frequency acceptance band passes through, also comprise the distributor that is used for distributing the signal that receives from the receiver of described subsystem duplexer and be used for distributing signal filtering that receives from described distributor and the receiving filter that filtered signal is offered the 4th port of described first signal combiner/distributor.
6. radio communication base station sharing means according to claim 1, wherein said first and second signal combiner/distributors are magic T, and described first and second filters are to be used for allowing the transmission of main system and the band pass filter that frequency acceptance band passes through, also comprise first phase rotation device in the signal path between second port that is provided at described first filter and described first signal combiner/distributor, and be provided at second phase rotation device in the signal path between the 6th port of described first filter and described secondary signal combiner/distributor, distributor, be used for distributing the signal that receives from the receiver of described subsystem duplexer, and receiving filter, be used for to distributing signal filtering that receives from described distributor and the 4th port that filtered signal is offered described first signal combiner/distributor.
7. according to claim 5 or 6 described radio communication base station sharing means, also comprise the circulator that has isolation features in the signal path between the 4th port of described receiving filter and described first signal combiner/distributor.
8. radio communication base station sharing means according to claim 1, wherein said first and second signal combiner/distributors are magic T, and described first and second filters are to be used for allowing the transmission of main system and the band pass filter that frequency acceptance band passes through, also comprise first phase rotation device in the signal path between the 3rd port that is provided at described second filter and described first signal combiner/distributor, and be provided at second phase rotation device in the signal path between the 6th port of described first filter and described secondary signal combiner/distributor, distributor, be used for distributing the signal that receives from the receiver of described subsystem duplexer, and receiving filter, be used for to distributing signal filtering that receives from described distributor and the 4th port that filtered signal is offered described first signal combiner/distributor.
9. radio communication base station sharing means according to claim 8 also comprises the circulator that has isolation features in the signal path between the 4th port of described receiving filter and described first signal combiner/distributor.
10. radio communication base station sharing means that is used to be shared in an antenna between main system and the subsystem comprises:
Be connected to the first magic T of transmitting/receiving signal line of the duplexer of main system by the 4th port, be used for distributing by the signal of the 4th port reception and with the signal that is distributed and export to the second and the 3rd port, also export the signal of merging by the first or the 4th port according to the phase place merga pass described second of described signal and the signal of the 3rd port reception with same phase;
Be connected to the transmitting/receiving signal line of subsystem duplexer and be connected to the second magic T of antenna by the 8th port by five-port, it is used for distributing by the signal of five-port reception and with the signal with same phase that is distributed and outputs to the 6th and the 7th port, and also exports the signal of merging by the 5th or the 8th port according to the phase place merga pass the described the 6th of described signal and the signal of the 7th port reception;
Be provided at first band pass filter in the signal path between the 6th port of second port of the described first magic T and the described second magic T, be used for transmission band by described main system;
Be provided at second band pass filter in the signal path between the 7th port of the 3rd port of the described first magic T and the described second magic T, be used for transmission band by described main system;
Be provided at first phase rotation device in the signal path between the 3rd port of described second band pass filter and the described first magic T;
Be provided at second phase rotation device in the signal path between the 6th port of described first band pass filter and the described second magic T;
Be used for distributing the distributor of the signal that receives from the receiver of described subsystem duplexer;
Be used for receiving filter to the signal filtering that is distributed that receives from described distributor; With
Be used for to offer the circulator of first port of the described first magic T from the filtered signal that described receiving filter receives.
11. according to claim 1,2,3,5,6,8 and 10 described radio communication base station sharing means, wherein said first and second filters are variable frequency filters.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| KR20040118146 | 2004-12-31 | ||
| KR1020040118146 | 2004-12-31 | ||
| KR1020050034056 | 2005-04-25 |
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| CN101088231A true CN101088231A (en) | 2007-12-12 |
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| CNA2005800448214A Pending CN101088231A (en) | 2004-12-31 | 2005-11-30 | Apparatus for using a wireless communication base station in common |
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| JP (1) | JP4503653B2 (en) |
| KR (1) | KR100877359B1 (en) |
| CN (1) | CN101088231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124410A1 (en) * | 2009-04-28 | 2010-11-04 | 阿尔卡特朗讯 | Method and device for sharing antenna between different wireless communication systems |
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| WO2009078095A1 (en) | 2007-12-18 | 2009-06-25 | Fujitsu Limited | Duplexer, module including the duplexer, and communication apparatus |
| KR101003736B1 (en) * | 2009-03-04 | 2010-12-23 | 주식회사 네이버스 | Passive Inter Modulation Distortion Cancellation Device in Common Transmission and Reception System |
| KR101563934B1 (en) | 2009-03-25 | 2015-10-29 | 삼성전자주식회사 | Apparatus and method for separating signals of different systems in wireless communication system |
| JP5846019B2 (en) | 2012-03-30 | 2016-01-20 | 富士通株式会社 | Wireless device |
| DE102012107877B4 (en) * | 2012-08-27 | 2016-01-07 | Epcos Ag | duplexer |
| KR101703744B1 (en) | 2015-06-15 | 2017-02-07 | 주식회사 케이엠더블유 | Multi-line phase shifter in multi-band antenna of mobile communication base transceiver station |
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| JPH01319303A (en) * | 1988-06-21 | 1989-12-25 | Mitsubishi Electric Corp | Filter type power synthesizer |
| JPH0744371B2 (en) * | 1991-11-18 | 1995-05-15 | 日本電業工作株式会社 | Shared antenna device |
| JP2595890B2 (en) * | 1994-03-28 | 1997-04-02 | 日本電気株式会社 | Power combiner |
| JPH11112201A (en) * | 1997-10-06 | 1999-04-23 | Nec Corp | Branching filter |
| KR100254519B1 (en) | 1998-02-27 | 2000-05-01 | 서정욱 | Cell site rf front end system using the antenna sharing for the different cellular telephone subscribers |
| JP3044215B1 (en) * | 1999-02-17 | 2000-05-22 | 日本電業工作株式会社 | Antenna shared equipment |
| US6553210B1 (en) * | 1999-08-03 | 2003-04-22 | Alliedsignal Inc. | Single antenna for receipt of signals from multiple communications systems |
| JP3863356B2 (en) * | 2000-08-01 | 2006-12-27 | 日本電業工作株式会社 | Antenna shared equipment |
| JP2003069308A (en) * | 2001-08-24 | 2003-03-07 | Nippon Dengyo Kosaku Co Ltd | Circular waveguide resonator type band pass filter and antenna multicoupler |
| JP2003101451A (en) * | 2001-09-20 | 2003-04-04 | Japan Radio Co Ltd | Radio relay method and radio repeater in radio transmission system |
| JP3566954B2 (en) * | 2002-07-17 | 2004-09-15 | 日本電業工作株式会社 | Multiplexer |
| KR20040020511A (en) * | 2002-08-30 | 2004-03-09 | 주식회사 현대시스콤 | Apparatus for common use of GPS antenna feeder and transmitter-receiver antenna feeder in a synchronous mobile communication BTS |
| JP3732176B2 (en) * | 2002-12-25 | 2006-01-05 | 日本電業工作株式会社 | Multiplexer |
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2005
- 2005-04-25 KR KR1020050034056A patent/KR100877359B1/en active IP Right Grant
- 2005-11-30 CN CNA2005800448214A patent/CN101088231A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010124410A1 (en) * | 2009-04-28 | 2010-11-04 | 阿尔卡特朗讯 | Method and device for sharing antenna between different wireless communication systems |
| CN102318434A (en) * | 2009-04-28 | 2012-01-11 | 阿尔卡特朗讯 | Method and device for sharing antenna between different wireless communication systems |
| CN102318434B (en) * | 2009-04-28 | 2014-11-19 | 阿尔卡特朗讯 | Method and device for sharing antenna between different wireless communication systems |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4503653B2 (en) | 2010-07-14 |
| JP2008526155A (en) | 2008-07-17 |
| KR100877359B1 (en) | 2009-01-07 |
| KR20060079056A (en) | 2006-07-05 |
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