CN105337646A - Multi-antenna implementation method, device and system - Google Patents

Multi-antenna implementation method, device and system Download PDF

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Publication number
CN105337646A
CN105337646A CN201410385351.9A CN201410385351A CN105337646A CN 105337646 A CN105337646 A CN 105337646A CN 201410385351 A CN201410385351 A CN 201410385351A CN 105337646 A CN105337646 A CN 105337646A
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signal
antenna
antenna channels
power amplifier
module
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CN201410385351.9A
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CN105337646B (en
Inventor
张毅
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201410385351.9A priority Critical patent/CN105337646B/en
Priority to PCT/CN2015/086010 priority patent/WO2016019843A1/en
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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
    • H04W16/18—Network planning tools
    • H04W16/20—Network planning tools for indoor coverage or short range network deployment

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a multi-antenna implementation method, device and system. In a multi-antenna system, an LMU performs frequency conversion of different frequency points on other signals except a signal in a plurality of antenna channel signals outputted by a base station, and then combines the signal after frequency conversion and the signal which is not subjected to frequency conversion and transmits the combined signals to a UE (User Equipment) and an RMB, wherein the RMB recovers the signal after frequency conversion into a former frequency point and transmits the signal to the UE, so that the UE can simultaneously receive the signal which is not subjected to frequency conversion in the combined signals and a recovered signal transmitted by the RMB; thus it can be seen that the UE can receive multiple channels of signals simultaneously under the circumstance of not increasing antennas, so that a multi-antenna technology can be realized under the circumstance of not increasing an antenna deployment, and the system performance can be improved in the case of not improving cost.

Description

Multiple antennas implementation method, Apparatus and system
Technical field
The invention process relates to communication technical field, particularly relates to a kind of multiple antennas implementation method, Apparatus and system.
Background technology
Multiple-input and multiple-output (Multiple-InputMultiple-Output is realized by multi-antenna technology, hereinafter referred to as: MIMO) be Long Term Evolution (LongTermEvolution, one of hereinafter referred to as LTE) core of system, by disposing a large amount of antenna at indoor and outdoors, more spatial degrees of freedom is provided, and then elevator system performance.Consider the restriction of astronomical cycle space, terminal processing capacity, current commercial LTE system outdoor system, the general send mode adopting two antennas.In order to further elevator system performance, the technology such as massive (on a large scale) MIMO are arisen at the historic moment as the evolution of MIMO technology, and massiveMIMO, by introducing a large amount of antenna, provides the more degree of freedom, thus capacity.In a kind of prior art, above-mentioned a large amount of antenna is usually concentrated and is positioned over steel tower, roof or other eminence, remote radio unit (RRU) (RemoteRadioUnit is connected to by feeder line, hereinafter referred to as: RRU), again by Fiber connection to Base Band Unit (BasebandUnit, hereinafter referred to as: BBU).Dual-antenna system due to what adopt in above-mentioned outdoor system, therefore in order to support that extensive antenna needs the antenna-feedback system of base station of upgrading, and due to the volume of antenna comparatively large, a large amount of antennas needs to take a large amount of spaces, considerably increases lower deployment cost.
And current commercial LTE system indoor heating system, BBU and RRU is arranged on base station side, signal is distributed to each floor by the feeder line connecting this base station, being this floor distribution signal power by the coupler of each floor, distributing the signal after power again by passing through antenna transmission after the further decile power of power splitter.Due to employing in above-mentioned indoor heating system is single feeder line, therefore no matter there is a few strip antenna passage (port) base station of this system, capital is configured to single antenna channels use, therefore this indoor heating system can only support single-input single-output (Single-InputSingle-Output, hereinafter referred to as: SISO), and MIMO can not be supported, therefore can not realize multi-antenna technology.
Summary of the invention
The embodiment of the present invention provides a kind of multiple antennas implementation method, Apparatus and system, can realize multi-antenna technology, thus can improve systematic function when not raising the cost when not increasing allocating antenna.
First aspect, a kind of indoor multiaerial system is provided, described indoor multiaerial system comprises: base station, local multiple-input and multiple-output unit LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with described feeder line, and at least one far-end input multi output box RMB; Wherein, described base station exports multiple antenna channels signal;
Described LMU is used for other antenna channels signals outside the first antenna channel signal in described multiple antenna channels signal to carry out frequency conversion, obtain other antenna channels signals after frequency conversion, in other antenna channels signals after wherein said frequency conversion, the frequency of each signal is different;
Described combiner unit is used for other antenna channels signals after described first antenna channel signal and described frequency conversion to carry out conjunction road, obtains closing road signal; Described conjunction road signal transfers to described at least one signal transmitting and receiving branch road by described feeder line, and sends described conjunction road signal to RMB described in subscriber equipment and at least one;
Described RMB is used for will in the described conjunction road signal that receive, in other antenna channels signals after described frequency conversion, the frequency of at least one signal returns to the frequency identical with described first antenna channel signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one recovery described is sent to described subscriber equipment;
The described conjunction road signal that described subscriber equipment sends for receiving a bars transmitting-receiving branch road, obtains the described first antenna channel signal in the signal of described conjunction road, and receives the antenna channels signal after at least one recovery described of RMB transmission described at least one.
In conjunction with first aspect, in the implementation that the first is possible, also comprise:
Described subscriber equipment is used for sending upward signal to a described bars transmitting-receiving branch road and RMB described at least one;
Described RMB for receiving described upward signal, and carries out frequency conversion to the described upward signal received, and obtains the upward signal after frequency conversion, and sends the upward signal after described frequency conversion to a described bars transmitting-receiving branch road;
Upward signal after described upward signal and described frequency conversion for receiving the upward signal after described upward signal and described frequency conversion, and is transferred to described LMU as a road signal by described feeder line by a described bars transmitting-receiving branch road;
Described LMU is used for the upward signal after described frequency conversion to return to the frequency identical with described upward signal, the upward signal after being restored, and by the uplink signal transmissions after described upward signal and described recovery to described base station.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible,
Described combiner unit is external in described LMU, wherein, the first end of described LMU is connected with described base station, and second end of described LMU is connected with the first end of described combiner unit, and the second end of described combiner unit is connected with signal transmitting and receiving branch road described in every bar by described feeder line;
Or described combiner unit is built in described LMU, the first end of described LMU is connected with described base station, and second end of described LMU is connected with signal transmitting and receiving branch road described in every bar with by described feeder line;
Described LMU is external in described base station, or is built in described base station;
Wherein, described signal transmitting branch comprises: coupler, power splitter, at least one antenna, the input of described coupler is connected with described feeder line, the output of described coupler is connected with the input of described power splitter, and the output of described power splitter is connected with antenna described in every root.
In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, described combiner unit specifically for:
Obtain at least one in the reference clock signal of the predeterminated frequency that described base station exports, pre-determined synchronization signal, Operation and Maintenance signal;
By other antenna channels signals after described first antenna channel signal, described frequency conversion, and the signal of described predeterminated frequency, described pre-determined synchronization signal, at least one in described Operation and Maintenance signal carry out conjunction road, obtain described conjunction road signal.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation, described reference clock signal comprises signal that frequency is 10MHz or frequency is the signal of 122.88MHz;
When described indoor multiaerial system is applied to tdd systems, described pre-determined synchronization signal is the control signal of Transmit enable;
Described Operation and Maintenance signal comprises at least one in gain control signal, timing_delay estimation signal, phase adjustment signal.
In conjunction with the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, described RMB also for:
Adjust according to the transmission characteristic parameter of described Operation and Maintenance signal to the down link of described RMB, the transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
In conjunction with the first possible implementation of first aspect, in the 6th kind of possible implementation, described RMB also for:
According to the described conjunction road signal received, or according to the described upward signal that described subscriber equipment sends, the transmission characteristic parameter of the down link of described RMB is adjusted; The transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
In conjunction with the first possible implementation of first aspect, in the 7th kind of possible implementation, described base station also for:
The described upward signal sent according to described subscriber equipment, or the channel status instruction that described subscriber equipment sends, adjust the transmission characteristic parameter of the down link of described RMB, the transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
In conjunction with the implementation that the second of first aspect is possible, in the 8th kind of possible implementation, described base station also for:
When initialization, the parameter of the signal transmitted according to described many strip antennas passage of initial transmission characterisitic parameter to described base station of the down link of described RMB adjusts, and the error of the parameter of the antenna channels signal that described many strip antennas passage is transmitted is in preset range;
Wherein, the initial transmission characterisitic parameter of described down link comprises: at least one in gain amplifier, delay parameter, phase parameter;
The parameter of described antenna channels signal comprises at least one in time delay, amplitude, phase place.
In conjunction with the implementation that the second of first aspect is possible, in the 9th kind of possible implementation, the all antenna channels signal acquisition measurement results of described subscriber equipment also for receiving according to described subscriber equipment, and described measurement result is sent to described base station, described measurement result comprises the signal to noise ratio of each antenna channels signal that can receive;
Described base station is also for the message transmission rate current according to described measurement result, data that in the stipulated time, described subscriber equipment is scheduled and described subscriber equipment, and adoption rate equity criterion is described dispatching user facility running time-frequency resource.
Second aspect, provide LMU described in a kind of local multiple-input and multiple-output unit LMU to comprise: at least one downlink transfer unit, described downlink transfer unit comprises: the first frequency converter, the first filter, the first power amplifier module and first duplexer;
Wherein, the signal of any antenna passage of base station inputs from the first input end of described first frequency converter, the output of described first frequency converter is connected with the input of described first filter, the output of described first filter is connected with the input of described first power amplifier module, the output of described first power amplifier module is connected with the input of described first duplexer, the feeder line in the output junction chamber of described first duplexer in multiaerial system.
In conjunction with second aspect, in the implementation that the first is possible, described downlink transfer unit also comprises: the second filter, power splitter, the second power amplifier module and the first phase-locked loop;
Wherein, the input of described second filter is used for input reference clock signal, the output of described second filter connects the input of described power splitter, first output of described power splitter connects the input of described first phase-locked loop, the output of described first phase-locked loop connects the second input of described first frequency converter, second output of described power splitter connects the input of described second power amplifier module, the first duplexer described in output connection of described second power amplifier module;
Pre-determined synchronization signal is connected described first duplexer with Operation and Maintenance signal.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second is possible, described LMU also comprises: at least one uplink unit, and described uplink unit comprises: the second duplexer, the 3rd power amplifier module, the 4th power amplifier module, the second frequency converter, the 3rd filter, the 5th power amplifier module;
Wherein, feeder line in the input junction chamber of described second duplexer in multiaerial system, first output of described second duplexer connects the input of described 3rd power amplifier module, and the output of described 3rd power amplifier module connects the base station in described indoor multiaerial system; Second output of described second duplexer connects the input of described 4th power amplifier module, the output of described 4th power amplifier module connects the first input end of described second frequency converter, the output of described second frequency converter connects the input of described 3rd filter, the output of described 3rd filter connects the output of described 5th power amplifier module, and the output of described 5th power amplifier module connects described base station.
In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, described uplink unit also comprises: the 6th power amplifier module and the second phase-locked loop;
Wherein, the input of described 6th power amplifier is used for input reference clock signal, and the output of described 6th power amplifier connects the input of described second phase-locked loop, and the output of described second phase-locked loop connects the second input of described second frequency converter.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation, described second power amplifier module, described 3rd power amplifier module, described 4th power amplifier module, described 5th power amplifier module, described 6th power amplifier module are power amplifier;
Described first power amplifier module is composed in series by adjustable gain power amplifier and a power amplifier.
The third aspect, a kind of far-end is provided to input multi output box RMB, described RMB comprises: at least one downlink transfer unit, the first antenna and the second antenna, and described downlink transfer unit comprises: first duplexer, the first power amplifier module, the first frequency converter, the first filter, the second power amplifier module;
Wherein, described first antenna connects the input of described first duplexer, first output of described first duplexer connects the input of described first power amplifier, the output of described first power amplifier module connects the first input end of described first frequency converter, the output of described first frequency converter connects the input of described first filter, the output of described first filter connects the input of described second power amplifier module, and the output of described second power amplifier module connects described second antenna.
In conjunction with the third aspect, in the implementation that the first is possible, described downlink transfer unit also comprises: the 3rd power amplifier module, the first phase-locked loop;
Wherein, second output of described first duplexer connects the input of described 3rd power amplifier module, second output of described first duplexer is for exporting the reference clock signal received, the output of described 3rd power amplifier module connects the input of described phase-locked loop, and the output of described phase-locked loop connects the second input of described first frequency converter.
In conjunction with the first possible implementation of the third aspect or the third aspect, in the implementation that the second is possible, described RMB also comprises: at least one uplink unit, and described uplink unit comprises: the second filter, the 4th power amplifier module, the second frequency converter, the 3rd filter, the 5th power amplifier module;
Wherein, described first antenna connects the input of described second filter, the output of described second filter connects the input of described 4th power amplifier module, the output of described 4th power amplifier module connects the first input end of described second frequency converter, the output of described second frequency converter connects the input of described 3rd filter, the output of described 3rd filter connects the input of described 5th power amplifier, and the output of described 5th power amplifier connects described second antenna.
In conjunction with the implementation that the second of the third aspect is possible, in the implementation that the third is possible, described uplink unit also comprises: the 4th filter, power splitter and the second phase-locked loop;
Wherein, the input of described 4th filter is used for input reference clock signal, the output of described 4th filter connects the input of described power splitter, the output of described power splitter connects the input of described second phase-locked loop, and the output of described second phase-locked loop connects the second input of described second frequency converter.
In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible implementation,
Described first power amplifier module, described 3rd power amplifier module, described 4th power amplifier module are power amplifier;
Described second power amplifier module and described 5th power amplifier module are composed in series by adjustable gain power amplifier and a power amplifier.
Fourth aspect, a kind of indoor multiaerial system is provided, described indoor multiaerial system comprises: base station, local multiple-input and multiple-output unit LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with described feeder line, and at least one far-end input multi output box RMB; Wherein, described base station exports multiple antenna channels signal;
Described base station is used for the first antenna channel signal in described multiple antenna channels signal to carry out Fast Fourier Transform Inverse IFFT or inverse discrete Fourier transform and changes IDFT and obtain the first discrete antenna channel signal, IFFT or IDFT is carried out in other antenna channels signals and the first data aggregate outside first antenna channel signal, obtains other discrete antenna channels signals;
Described LMU is used for described other discrete antenna channels signals to modulate, and obtains other antenna channels signals after modulating;
Described base station transfers to described combiner unit after the first antenna channel signal after modulation is carried out buffer memory, and described LMU is by the extremely described combiner unit of other antenna channels Signal transmissions after modulation;
Described combiner unit is used for other antenna channels signals after described the first discrete antenna channel signal and described modulation to carry out conjunction road, obtains closing road signal; Described conjunction road signal is sent at least one signal transmitting and receiving branch road by described feeder line by described combiner unit, and sends described conjunction road signal to RMB described in subscriber equipment and at least one;
Described RMB is used for will in the described conjunction road signal that receive, in other antenna channels signals after described modulation at least one signal carry out demodulation obtain at least one demodulation after other antenna channels signals, again FFT or DFT is carried out to other antenna channels signals after described demodulation and remove described first data, obtain the primary signal of at least one other antenna channels signal, again the primary signal of at least one other antenna channels signal described is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of described the first discrete antenna channel signal, at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described are sent to described subscriber equipment,
The described conjunction road signal that described subscriber equipment sends for receiving a bars transmitting-receiving branch road, obtain the first described discrete antenna channel signal in the signal of described conjunction road, and receive at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described of RMB transmission described at least one.
In conjunction with fourth aspect, in the implementation that the first is possible,
Described combiner unit is external in described LMU, wherein, the first end of described LMU is connected with described base station, and second end of described LMU is connected with the first end of described combiner unit, and the second end of described combiner unit is connected with signal transmitting and receiving branch road described in every bar by described feeder line;
Or described combiner unit is built in described LMU, the first end of described LMU is connected with described base station, and second end of described LMU is connected with signal transmitting and receiving branch road described in every bar with by described feeder line;
Described LMU is external in described base station, or is built in described base station;
Described signal transmitting branch comprises: coupler, power splitter, at least one antenna, the input of described coupler is connected with described feeder line, the output of described coupler is connected with the input of described power splitter, and the output of described power splitter is connected with antenna described in every root.
5th aspect, provides a kind of outdoor multiaerial system, and described outdoor multiaerial system comprises: base station, local module, first day wire module, the second Anneta module, at least one evolution remote radio unit (RRU), at least one evolution remote end module; Described base station exports multiple antenna channels signal, is one group with at least two antenna channels signals, and each signal number organized in antenna channels signal is identical;
Described base station sends first group of antenna channels signal by described first day wire module to subscriber equipment;
Described local module is used at least one group of antenna channels signal except described first group of antenna channels signal to be sent at least one evolution remote radio unit (RRU) described by described second Anneta module;
If the next stage of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), then described evolution remote radio unit (RRU) is used at least one group of antenna channels signal in the described at least one group of antenna channels signal received to send to another evolution remote radio unit (RRU) described; If the next stage of described evolution remote radio unit (RRU) is described evolution remote end module, then described evolution remote radio unit (RRU) is used for the frequency conversion each antenna channels signal at least one group of antenna channels signal in the described at least one group of antenna channels signal received being carried out respectively different frequent points, obtain the antenna channels signal after at least one group of frequency conversion, and send to described evolution remote end module;
Described evolution remote end module is used for the frequency of each antenna channels signal in the antenna channels signal after the described at least one group of frequency conversion received correspondence to return to the frequency with each antenna channels signal in described first group of antenna channels signal, obtain the antenna channels signal after at least one group of recovery, and send to described subscriber equipment;
Described first group of antenna channels signal that described subscriber equipment sends for receiving described first day wire module, and receive the antenna channels signal after the described at least one group of recovery of described unlimited remote end module transmission.
In conjunction with the 5th aspect, in the implementation that the first is possible,
Described subscriber equipment is also for sending upward signal to described first day wire module and an evolution remote end module;
Described evolution remote end module is also for carrying out the synchronous and analog-to-digital conversion process of signal by the described upward signal received, and transfer the signal after process to inphase quadrature I/Q data signal, and the evolution remote radio unit (RRU) of described I/Q data signal to described evolution remote end module higher level is sent;
If the higher level of described evolution remote radio unit (RRU) is described second Anneta module, the described I/Q data signal of described evolution remote radio unit (RRU) also for receiving sends to described second Anneta module; If the higher level of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), the described I/Q data signal of described evolution remote radio unit (RRU) also for receiving sends to another evolution remote radio unit (RRU) described, until be sent to described second Anneta module;
Described base station also for receiving the described upward signal that described first day wire module receives, and receives the described I/Q data signal that described local module received by described second Anneta module.
In conjunction with the 5th aspect, in the implementation that the second is possible,
Described subscriber equipment is also for sending upward signal to described first day wire module and an evolution remote end module;
Described evolution remote end module also for described upward signal is carried out frequency conversion, obtains the upward signal after frequency conversion, and sends to the evolution remote radio unit (RRU) of described evolution remote end module higher level;
If the higher level of described evolution remote radio unit (RRU) is described second Anneta module, described evolution remote radio unit (RRU) also sends to described second Anneta module for the upward signal after the described frequency conversion that will receive; If the higher level of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), described evolution remote radio unit (RRU) also sends to another evolution remote radio unit (RRU) described, until be sent to described second Anneta module for the upward signal after the described frequency conversion that will receive;
Described local module also returns to the frequency identical with described upward signal for the frequency of the upward signal after the described frequency conversion that received by described second Anneta module, upward signal after being restored, and send the upward signal after described recovery to described base station;
Described base station also for receiving the described upward signal that described first day wire module receives, and receives the upward signal after the described recovery of described local module transmission.
In conjunction with the 5th aspect to any one in the possible implementation of the second of the 5th aspect, in the implementation that the third is possible,
First evolution remote end module also for the second evolution remote end module signal transmission, described signal comprise in the upward signal after the antenna channels signal after described frequency conversion, described I/Q data signal, described frequency conversion any one;
Described first evolution remote end module, described second evolution remote end module are any two the evolution remote end modules at least one evolution remote end module described.
6th aspect, provide a kind of multiple antennas implementation method, described method comprises:
In the multiple antenna channels signals export base station, outside the first antenna channel signal, other antenna channels signals carry out frequency conversion, obtain other antenna channels signals after frequency conversion, and in other antenna channels signals after wherein said frequency conversion, the frequency of each signal is different;
Other antenna channels signals after described first antenna channel signal and described frequency conversion are carried out conjunction road, obtains closing road signal;
Described conjunction road signal is sent to subscriber equipment and at least one far-end input multi output box RMB, so that the frequency of at least one signal in other antenna channels signals after the described frequency conversion in the described conjunction road signal received is returned to the frequency identical with described first antenna channel signal by the described RMB receiving described conjunction road signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one recovery described is sent to described subscriber equipment, described subscriber equipment is made to obtain described first antenna channel signal in the signal of described conjunction road, and the antenna channels signal received after at least one recovery described of RMB transmission described at least one.
In conjunction with the 6th aspect, in the implementation that the first is possible, described method also comprises:
Receive described subscriber equipment send upward signal, and receive at least one RMB send frequency conversion after upward signal;
Upward signal after described frequency conversion returned to the frequency identical with described upward signal, the upward signal after being restored;
The upward signal after described upward signal and described recovery is sent to described base station.
7th aspect, provide a kind of multiple antennas implementation method, described method comprises:
The first antenna channel signal in described multiple antenna channels signal is carried out Fast Fourier Transform Inverse IFFT or inverse discrete Fourier transform to change IDFT and obtain the first discrete antenna channel signal, IFFT or IDFT is carried out in other antenna channels signals and the first data aggregate outside first antenna channel signal, obtains other discrete antenna channels signals;
Described other discrete antenna channels signals are modulated, obtains other antenna channels signals after modulating;
After the first antenna channel signal after modulation is carried out buffer memory with described modulation after other antenna channels signals carry out conjunctions road, obtain conjunction road signal;
Described conjunction road signal is sent to RMB described in subscriber equipment and at least one, so that the described RMB receiving described conjunction road signal is by the described conjunction road signal that receives, in other antenna channels signals after described modulation at least one signal carry out demodulation obtain at least one demodulation after other antenna channels signals, again FFT or DFT is carried out to other antenna channels signals after described demodulation and remove described first data, obtain the primary signal of at least one other antenna channels signal, again the primary signal of at least one other antenna channels signal described is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of described the first discrete antenna channel signal, at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described are sent to described subscriber equipment, described subscriber equipment is made to receive the described conjunction road signal of a bars transmitting-receiving branch road transmission, obtain the first described discrete antenna channel signal in the signal of described conjunction road, and receive at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described of RMB transmission described at least one.
Eighth aspect, provide another kind of multiple antennas implementation method, described method comprises:
First group of antenna channels signal is sent to subscriber equipment;
At least one group of antenna channels signal except described first group of antenna channels signal is sent at least one evolution remote radio unit (RRU) described; Wherein, each group antenna channels signal comprises at least two antenna channels signals in multiple antenna channels signals of base station output, and each signal number organized in antenna channels signal is identical;
So that after at least one evolution remote radio unit (RRU) described receives described at least one group of antenna channels signal, if the next stage of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), then at least one group of antenna channels signal in the described at least one group of antenna channels signal received sends to another evolution remote radio unit (RRU) described by described evolution remote radio unit (RRU), if the next stage of described evolution remote radio unit (RRU) is described evolution remote end module, then each antenna channels signal at least one group of antenna channels signal in the described at least one group of antenna channels signal received is carried out the frequency conversion of different frequent points by described evolution remote radio unit (RRU) respectively, obtain the antenna channels signal after at least one group of frequency conversion, and send to described evolution remote end module, so that the frequency of each antenna channels signal in the antenna channels signal after the described at least one group of frequency conversion received correspondence is returned to the frequency with each antenna channels signal in described first group of antenna channels signal by described evolution remote end module, obtain the antenna channels signal after at least one group of recovery, and send to described subscriber equipment, make subscriber equipment for receiving the antenna channels signal after described first group of antenna channels signal and described at least one group of recovery.
In conjunction with eighth aspect, in the implementation that the first is possible, described method also comprises:
Receive the upward signal that subscriber equipment sends;
Receive the I/Q data signal that at least one evolution remote radio unit (RRU) sends; Described I/Q data signal carries out the synchronous and analog-to-digital conversion process of signal by described evolution remote end module to described upward signal, and obtain after the signal conversion after process, and be sent to described evolution remote radio unit (RRU).
In conjunction with eighth aspect, in the implementation that the second is possible, described method also comprises:
Receive the upward signal that subscriber equipment sends;
Receive the upward signal after the frequency conversion of at least one evolution remote radio unit (RRU) transmission; Upward signal after described frequency conversion generates after carrying out frequency conversion by described evolution remote end module to described upward signal, and be sent to described evolution remote radio unit (RRU);
The frequency of the upward signal after the described frequency conversion received is returned to the frequency identical with described upward signal, the upward signal after being restored.
In sum, the embodiment of the present invention provides a kind of multiple antennas implementation method, Apparatus and system, in indoor multiaerial system, in the multiple antenna channels signals exported base station by LMU, outside the first antenna channel signal, other antenna channels signals carry out the frequency conversion of different frequent points, again other antenna channels signals after described first antenna channel signal and described frequency conversion are carried out conjunction road, the conjunction road signal obtained is sent to UE and RMB simultaneously, wherein RMB is also sent to this UE after the frequency of at least one signal in other antenna channels signals after frequency conversion is returned to original frequency, make UE can receive the first antenna channel signal closed in the signal of road simultaneously, the restoring signal of the frequency recovery of at least one signal, in outdoor multiaerial system, by first day wire module, one group of antenna channels signal is sent to UE, by the second Anneta module, other are organized antenna channels Signal transmissions to evolution remote radio unit (RRU) again, evolution remote radio unit (RRU) transfers to evolution remote end module after other group antenna channels signals are carried out frequency conversion, after other group antenna channels signals carry out frequency conversion again after frequency conversion, original frequency is recovered by evolution remote end module, and send to UE, thus make UE can receive many group antenna channels signals simultaneously.As can be seen here, multi-antenna technology can be realized when not increasing allocating antenna, thus systematic function can be improved when not raising the cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of the downlink transfer of the indoor multiaerial system that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the uplink of the indoor multiaerial system that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the LMU that Fig. 3 provides for the embodiment of the present invention;
Another structural representation of the LMU that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the RMB that Fig. 5 provides for the embodiment of the present invention;
Another structural representation of the RMB that Fig. 6 provides for the embodiment of the present invention;
The schematic diagram utilizing discrete spectrum to transmit of the indoor multiaerial system that Fig. 7 provides for the embodiment of the present invention;
The schematic diagram of the downlink transfer of the outdoor multiaerial system that Fig. 8 provides for the embodiment of the present invention;
The schematic diagram of the uplink of the outdoor multiaerial system that Fig. 9 provides for the embodiment of the present invention;
Another schematic diagram of the uplink of the outdoor multiaerial system that Figure 10 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of multiple antennas implementation method that Figure 11 provides for the embodiment of the present invention;
The schematic flow sheet of the downlink transfer of a kind of multiple antennas implementation method that Figure 12 provides for the embodiment of the present invention;
The schematic flow sheet of the uplink of a kind of multiple antennas implementation method that Figure 13 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of multiple antennas implementation method that Figure 14 provides for the embodiment of the present invention;
The schematic flow sheet of another multiple antennas implementation method that Figure 15 provides for the embodiment of the present invention;
The schematic flow sheet of the downlink transfer of another multiple antennas implementation method that Figure 16 provides for the embodiment of the present invention;
The schematic flow sheet of the uplink of another multiple antennas implementation method that Figure 17 provides for the embodiment of the present invention;
The schematic flow sheet of the uplink of another multiple antennas implementation method that Figure 18 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of indoor multiaerial system, and as shown in Figure 1, this indoor multiaerial system comprises:
Base station, local multiple-input and multiple-output unit (LocalMIMOUnit, hereinafter referred to as: LMU), combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with feeder line, and at least one far-end input multi output box (RemoteMIMOBox, hereinafter referred to as: RMB).In above-mentioned indoor multiaerial system can for be positioned at this system signal scope multiple subscriber equipmenies (UserEquipment, hereinafter referred to as: UE) serve.
Wherein, for downlink transfer, base station exports multiple antenna channels signal.
LMU is used for other antenna channels signals outside the first antenna channel signal in multiple antenna channels signal to carry out frequency conversion, obtains other antenna channels signals after frequency conversion, and in other antenna channels signals wherein after frequency conversion, the frequency of each signal is different.
Combiner unit is used for other antenna channels signals after the first antenna channel signal and frequency conversion to carry out conjunction road, obtains closing road signal; Close road signal and transfer at least one signal transmitting and receiving branch road by feeder line, and send conjunction road signal to subscriber equipment and at least one RMB.
RMB is used for will in the conjunction road signal that receive, in other antenna channels signals after frequency conversion, the frequency of at least one signal returns to the frequency identical with the first antenna channel signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one being recovered sends to subscriber equipment.
UE receives and dispatches the conjunction road signal of branch road transmission for receiving a bars, obtain the first antenna channel signal closed in the signal of road, and receives the antenna channels signal after at least one recovery of at least one RMB transmission.
Exemplary, multiple antenna channels signals that base station exports are respectively antenna channels signal 0 ~ 3, as shown in Figure 1, are designated as p0 ~ p3 respectively.Wherein, p0 ~ p3 can be LTE radio signal, and can also comprise at least one in reference clock signal that base station provides, pre-determined synchronization signal, Operation and Maintenance signal in optional p0 ~ p3.Wherein, the signal of reference clock signal can be frequency be 10MHz or frequency be the signal of 122.88MHz (certainly, also can be the signal of other frequencies), according to tdd systems (TimeDivisionDuplexing, hereinafter referred to as TDD), pre-determined synchronization signal can be the control signal of TDD Transmit enable.Operation and Maintenance signal comprises at least one in facility switching signal (for switch RMB), gain control signal, timing_delay estimation signal, phase adjustment signal.
For multiple antenna channels signal p0 ~ p3 that base station provides, except p0, p1 ~ p3 is carried out frequency conversion by LMU, frequency after frequency conversion can be 5.2GHz or 3.5GHz, or other frequencies except former frequency, the frequency of the p1 ~ p3 wherein after frequency conversion is different, when object is to make p0 ~ p1 by same feeder line transmission, does not produce interference mutually.
Then, the p1 ~ p3 after p0 and frequency conversion is carried out conjunction road (close road refer to multiple signals to be combined into lead up to a channel and transmit) by combiner unit, and combiner unit can be a mixer or duplexer, and concrete can adopt:
Such as LMU is provided with the built-in mixer of another one, and p1 ~ p3 can first once be closed road and export by this built-in mixer, then carries out conjunction road by aforementioned combiner unit and p0, obtains closing road signal; Or p1 ~ p3 directly inputs in aforementioned combiner unit and carries out conjunction road by LMU, obtain closing road signal.
Above-mentioned conjunction road signal at least comprises the p1 ~ p3 after p0 and frequency conversion, during at least one in the reference clock signal optionally also provided when base station, pre-determined synchronization signal, Operation and Maintenance signal, this conjunction road signal yet comprises at least one in reference clock signal, pre-determined synchronization signal, Operation and Maintenance signal.
Optionally, above-mentioned combiner unit can be built in LMU, and also can be connected on outside LMU outward, and LMU can be in a base station built-in, also can be connected on outside, base station outward, wherein base station can be eNB, comprises RRU and BBU.In Fig. 1, LMU is external in base station, and combiner unit is external in LMU, and other possible implementations are not shown.
Combiner unit is sent to each signal transmitting and receiving branch road by feeder line after obtaining and closing road signal by combiner unit, the structure of signal transmitting and receiving branch road can as shown in Figure 1 (the signal transmitting and receiving branch road 1 ~ 3 shown in Fig. 1), comprise: coupler, power splitter, at least one antenna, the input of coupler is connected with feeder line, the output of coupler is connected with the input of power splitter, and the output of power splitter is connected with every root antenna (antenna number that the power splitter shown in Fig. 1 connects is two or three).
Wherein, every bars transmitting-receiving branch road is generally positioned at different regions, and such as in the building, every one deck arranges an above-mentioned signal transmitting and receiving branch road.After conjunction road signal distributes power by the coupler that feeder line connects, power splitter on road Signal transmissions to each signal transmitting and receiving branch road will be closed, power splitter is that every root antenna distributes transmitting power (being generally decile power) further, finally by conjunction road signal by sending to extraradial mode.
RMB and UE in the quorum sensing inhibitor that signal transmitting and receiving branch road sends just can receive this conjunction road signal, after UE receives this conjunction road signal, because p1 ~ p3 in the signal of conjunction road is through frequency conversion, so UE can only identify the p0 closed in the signal of road.
Meanwhile, after RMB receives this conjunction road signal, at least one road in p1 ~ p3 will to be closed in the signal of road and again through frequency conversion, makes the frequency of at least one road signal in p1 ~ p3 return to the frequency identical with p0, by least one road of p1 ~ p3 signal recuperation to former frequency.Each RMB shown in Fig. 1 recovers p1 ~ p3 Zhong mono-road signal, what wherein in figure, from top to bottom signal transmitting and receiving branch road 1 covered lower RMB1 recovery is the frequency of p1, the frequency of what signal transmitting and receiving branch road 2 covered lower RMB2 recovery is also p1, what three RMB1 ~ 3 under signal transmitting and receiving branch road 3 covers were recovered respectively is the frequency of p1, p2, p3, certainly be above-mentionedly only example, concrete each RMB can be recovered several signals and can be realized by configuration RMB.
Then, at least one road signal after recovery sends to UE by RMB, now UE both can receive p0, at least one road signal in the p1 ~ p3 of RMB transmission can be received again, as shown in Figure 1, UE1 under signal transmitting and receiving branch road 1 covers have received p0 and p1 simultaneously, and the UE2 under signal transmitting and receiving branch road 2 covers have received p0 and p1 simultaneously, and the UE3 under signal transmitting and receiving branch road 3 covers have received p0 ~ p3 simultaneously.As can be seen here, by the mode of wireless transmission, achieve MIMO in the downlink transfer of indoor heating system, improve systematic function.
The deployment of RMB can be determined as required, generally at the more regional deployment of UE, thus just can realize MIMO in this region.Therefore, it is possible to carry out Dynamical Deployment according to the performance requirement of zones of different.
Secondly, for uplink, can comprise:
UE is used for sending upward signal to a bars transmitting-receiving branch road and at least one RMB;
RMB for receiving upward signal, and carries out frequency conversion to the upward signal received, and obtains the upward signal after frequency conversion, and sends the upward signal after frequency conversion to a bars transmitting-receiving branch road;
Upward signal after upward signal and frequency conversion for receiving the upward signal after upward signal and frequency conversion, and is transferred to LMU as a road signal by feeder line by one bars transmitting-receiving branch road;
LMU is used for the upward signal after frequency conversion to return to the frequency identical with upward signal, the upward signal after being restored, and by upward signal and the uplink signal transmissions after recovering to base station.
Exemplary, as shown in Figure 2, UE1 outwards sends row signal on the way, is designated as p, and range of signal covers the signal transmitting and receiving branch road 1 of this UE1, and the range of signal RMB1 being positioned at signal transmitting and receiving branch road 1 can both receive this upward signal.
RMB1, after receiving p, carries out frequency conversion to p, and the frequency after frequency conversion can be 5.2GHz or 3.5GHz, or other frequencies except former frequency, obtains the upward signal p ' after frequency conversion, and is outwards sent by p '.Wherein, can also comprise reference clock signal in this p ', when this reference clock signal and downlink transfer, UE1 is identical from the reference clock signal the river road signal that base station obtains.
After signal transmitting and receiving branch road 1 obtains the upward signal p ' after frequency conversion, using p ' and receive be sent to LMU as a road signal.
LMU acquisition this road signal after, the p in this road signal is sent to base station, p ' is carried out frequency conversion again, obtains p ", make p " frequency identical with p (can be understood as p " be exactly that p ' is reverted back p), then by p " to base station.Thus base station just can receive upward signal p and p ".As can be seen here, by the mode of wireless transmission, also achieve MIMO in the uplink of indoor heating system, improve systematic function.
In addition, the LMU structure that the embodiment of the present invention provides can as shown in Figure 3, comprise:
At least one downlink transfer unit 1, downlink transfer unit comprises: the first frequency converter 101, first filter 102, first power amplifier module 103 and first duplexer 104;
Wherein, the signal of any antenna passage of base station inputs from the first input end of the first frequency converter 101, the output of the first frequency converter 101 is connected with the input of the first filter 103, the output of the first filter 102 is connected with the input of the first power amplifier module 103, the output of the first power amplifier module 103 is connected with the input of first duplexer 104, the feeder line in the output junction chamber of first duplexer 104 in multiaerial system.
Wherein, a downlink transfer unit 1 can carry out frequency conversion to an antenna channels signal, therefore by configuration, when LMU arranges multiple downlink transfer unit 1, just can carry out frequency conversion to multiple antenna channels signal simultaneously.
Optionally, downlink transfer unit 1 can also comprise: the second filter 105, power splitter 106, second power amplifier module 107 and the first phase-locked loop 108;
Wherein, the input of the second filter 105 is used for input reference clock signal, the output of the second filter 105 connects the input of power splitter 106, first output of power splitter 106 connects 108 inputs of the first phase-locked loop, the output of the first phase-locked loop 108 connects the second input of the first frequency converter 101, second output of power splitter 106 connects the input of the second power amplifier module 107, the first duplexer 104 of the output connection of the second power amplifier module 107;
Aforementioned pre-determined synchronization signal is connected first duplexer 104 with Operation and Maintenance signal.
Wherein, above-mentioned first power amplifier module can be made up of the power amplifier of an adjustable gain and a power amplifier (gain is larger), and the second power amplifier module also can be a power amplifier.
Optionally, as shown in Figure 4, can also comprise at least one uplink unit 2 in LMU, uplink unit 2 comprises: the second duplexer 201, the 3rd power amplifier module 202, the 4th power amplifier module 203, second frequency converter 204, the 3rd filter 205, the 5th power amplifier module 206;
Wherein, feeder line in the input junction chamber of the second duplexer 201 in multiaerial system, first output of the second duplexer 201 connects the input of the 3rd power amplifier module 202, the base station in the output junction chamber of the 3rd power amplifier module 202 in multiaerial system; Second output of the second duplexer 201 connects the input of the 4th power amplifier module 203, the output of the 4th power amplifier module 203 connects the first input end of the second frequency converter 204, the output of the second frequency converter 204 connects the input of the 3rd filter 205, the output of the 3rd filter 205 connects the output of the 5th power amplifier module 206, and the output of the 5th power amplifier module 206 connects base station.
Optionally, uplink unit 2 also comprises: the 6th power amplifier module 207 and the second phase-locked loop 208;
Wherein, the input of the 6th power amplifier 207 is used for input reference clock signal, and the output of the 6th power amplifier 207 connects the input of the second phase-locked loop 208, and the output of the second phase-locked loop 208 connects the second input of the second frequency converter 204.
Wherein, above-mentioned third and fourth, five, six power amplifier modules can be power amplifier.
The RMB structure that the embodiment of the present invention provides can be as shown in Figure 5, comprise: at least one downlink transfer unit 3, first antenna 00 and second antenna 01, downlink transfer unit 3 comprises: first duplexer 301, first power amplifier module 302, first frequency converter 303, first filter 304, second power amplifier module 305;
Wherein, first antenna 00 connects the input of first duplexer 301, first output of first duplexer 301 connects the input of the first power amplifier 302, the output of the first power amplifier module 302 connects the first input end of the first frequency converter 303, the output of the first frequency converter 303 connects the input of the first filter 304, the output of the first filter 304 connects the input of the second power amplifier module 305, and the output of the second power amplifier module 305 connects the second antenna 01.
Wherein, a downlink transfer unit 3 can carry out frequency conversion recovery to an antenna channels signal, therefore by configuration, when RMB arranges multiple downlink transfer unit 3, just can carry out frequency conversion recovery to multiple antenna channels signal simultaneously.
Optionally, downlink transfer unit 3 can also comprise: the 3rd power amplifier module 306, first phase-locked loop 307;
Wherein, second output of first duplexer 301 connects the input of the 3rd power amplifier module 306, second output of first duplexer 301 is for exporting the reference clock signal received, the output of the 3rd power amplifier module 306 connects the input of the first phase-locked loop 307, and the output of the first phase-locked loop 307 connects the second input of the first frequency converter 303.
Wherein, the first power amplifier module, the 3rd power amplifier module can be a power amplifier, and the second power amplifier module is composed in series by adjustable gain power amplifier and a power amplifier.
Optionally, as shown in Figure 6, RMB can also comprise:
At least one uplink unit 4, uplink unit 4 comprises: the second filter 401, the 4th power amplifier module 402, second frequency converter 403, the 3rd filter 404, the 5th power amplifier module 405;
Wherein, first antenna 00 connects the input of the second filter 401, the output of the second filter 401 connects the input of the 4th power amplifier module 402, the output of the 4th power amplifier module 402 connects the first input end of the second frequency converter 403, the output of the second frequency converter 403 connects the input of the 3rd filter 404, the output of the 3rd filter 404 connects the input of the 5th power amplifier 405, and the output of the 5th power amplifier 405 connects the second antenna 01.
Optionally, uplink unit 4 also comprises: the 4th filter 406, power splitter 407 and the second phase-locked loop 408;
Wherein, the input of the 4th filter 406 is used for input reference clock signal, the output of the 4th filter 406 connects the input of power splitter 407, the output of power splitter 407 connects the input of the second phase-locked loop 408, and the output of the second phase-locked loop 408 connects the second input of the second frequency converter 403.
Wherein, the 4th power amplifier module is a power amplifier, such as, can be a low noise amplifier, and the 5th power amplifier module is that power amplifier can be composed in series by adjustable gain power amplifier and a power amplifier.
Optionally, RMB can adjust according to the transmission characteristic parameter of aforesaid operations maintenance signal to the down link of this RMB, and the transmission characteristic parameter of down link comprises at least one in gain amplifier, delay parameter, phase parameter.
Optionally, RMB according to the conjunction road signal received, or according to the upward signal (such as according to the parameter such as signal strength signal intensity, time delay of upward signal) that UE sends, can also adjust the transmission characteristic parameter of the down link of this RMB.The transmission characteristic parameter of down link comprises at least one in gain amplifier, delay parameter, phase parameter.
Optionally, the upward signal that base station can also send according to subscriber equipment, or the channel status instruction that subscriber equipment sends, adjust the transmission characteristic parameter of the down link of RMB, the transmission characteristic parameter of down link comprises at least one in gain amplifier, delay parameter, phase parameter.
Exemplary, the above-mentioned adjustment to gain amplifier can be realized by the power amplifier of configuration adjustable gain, or by configuration numerical control adjustable attenuator (not shown); Can by configuring numerical control delay line, phase shifter, realizing (not shown) by methods such as buffer delay transmissions to the adjustment of time delay and phase place.
Optionally, when initialization, the parameter of the signal that base station can also be transmitted according to many strip antennas passage of the initial transmission characterisitic parameter of the down link of RMB to base station adjusts, and the error of the parameter of the antenna channels signal that many strip antennas passage is transmitted is in preset range;
Wherein, the initial transmission characterisitic parameter of down link comprises: at least one in gain amplifier, delay parameter, phase parameter;
The parameter of antenna channels signal comprises at least one in time delay, amplitude, phase place.
Optionally, all antenna channels signal acquisition measurement results that UE can also receive according to subscriber equipment, and measurement result is sent to base station.Wherein, measurement result includes but not limited to the signal to noise ratio of each antenna channels signal that can receive.
Base station can be current according to measurement result, data that in the stipulated time, subscriber equipment is scheduled and subscriber equipment message transmission rate, adoption rate equity criterion is dispatching user facility running time-frequency resource.
In addition, optionally, above-mentioned is continuous frequency spectrum signal by the signal after antenna channels signal frequency conversion, in addition also can be discrete spectrum signal, then as shown in Figure 7, (can be arranged in BBU) at least one Fast Fourier Transform Inverse (InverseFastFourierTransform can be set in base station in above-mentioned indoor multiaerial system, be called for short IFFT) module, or inverse discrete Fourier transform changes (InverseDiscreteFourierTransform, be called for short IDFT) module and buffer memory (can be arranged in BBU and/or RRU), for each road signal all correspondence be provided with transmission channel module, demodulation module, fast Fourier transform (FastFourierTransform are set in RMB, be called for short FFT) module or discrete Fourier transform (DiscreteFourierTransform, DFT) module, IFFT module or IDFT module, transmission channel module, processing method comprises:
First, in multiple antenna channels signals that base station exports by the IFFT module in BBU, the first antenna channel signal carries out IFFT or IDFT and obtains the first discrete antenna channel signal, by other antenna channels signals and the first data outside the first antenna channel signal (such as, can be data " 0 ") combine and carry out IFFT or IDFT, obtain other discrete antenna channels signals;
Secondly, described other discrete antenna channels signals carry out modulating (can be modulated to 3.5GHz or other possible frequencies) by LMU, obtain other antenna channels signals after modulating;
Simultaneously, by the first antenna channel signal input-buffer after modulation, through buffer memory input transmission channel module (herein by modulation after the first antenna channel signal input-buffer be issue UE signal to make, the signal issuing UE with RMB is synchronous in time), and other antenna channels signals after modulation are also transferred to combiner unit by transmission channel module, other antenna channels signals after described first antenna channel signal and described modulation are carried out conjunction road by combiner unit, obtain closing road signal;
Conjunction road signal is sent to each signal transmitting and receiving branch road by feeder line by combiner unit, for sending described conjunction road signal to subscriber equipment and at least one RMB;
At least one signal in other antenna channels signals after described modulation in the described conjunction road signal received is carried out demodulation by synchronization module and obtains other antenna channels signals after at least one demodulation by the described RMB receiving described conjunction road signal, by FFT module or DFT module, FFT or DFT process is carried out to other antenna channels signals after demodulation again, obtain the primary signal of at least one other antenna channels signal, finally, by IFFT module or IDFT module, the primary signal of other antenna channels signals obtained is carried out IFFT or IDFT process, obtain discrete other antenna channels signals identical with the frequency of the first discrete antenna channel signal (to it should be noted that, because aforementioned other discrete antenna channels signals do arriving of IFFT or IDFT with the first data aggregate, therefore be different from other the discrete antenna channels signals obtained here).
Then, other the discrete antenna channels signals obtained send to UE by RMB.
Like this, UE just have received the first discrete antenna channel signal and other discrete antenna channels signals simultaneously, because the first discrete antenna channel signal is before sending by the process of buffer memory, so discrete the first antenna channel signal of UE and other discrete antenna channels signals are synchronous in time.
Exemplary, as shown in Figure 7, suppose that multiple antenna channels signals that base station (can be eNB) exports are respectively antenna channels signal 0 ~ 3, be designated as p0 ~ p3 respectively, in the BBU of base station, corresponding p0 ~ p3 is provided with 4 IFFT modules, for IFFT module 0 ~ 3, wherein in BBU and RRU for p0 arranges buffer memory, in RRU, corresponding p0 ~ p3 is provided with 4 transmission channels, for transmission channel 0 ~ 3, LMU can be external in base station also can be built in base station, herein to be built in base station (shown in Fig. 7, being built in RRU).In addition, above-mentioned IFFT module can be replaced by IDFT module, and FFT module can be replaced by DFT module.
P0 is carried out carry out IFFT process by IFFT module 0, obtain discrete spectrum signal p0 '.
P1 ~ p3 and data " 0 " are carried out IFFT process respectively by IFFT module 1 ~ 3, obtain discrete spectrum signal p1 " ~ p3 ".
Be input to by p0 ' in the buffer memory of BBU, the buffer memory through RRU is input to transmission channel 0.
By p1 " ~ p3 " be input to transmission channel 1 ~ 3 respectively.
Each input channel is respectively by above-mentioned p0 ', p1 " ~ p3 " carry out conjunctions road by combiner unit (can for duplexer), obtain conjunction road signal, and this conjunction road signal is transferred to signal transmitting and receiving branch road by feeder line send.
After RMB receives and closes road signal, the p1 in road signal will be closed " ~ p3 " at least one road process, wherein as will be processed p1 simultaneously " ~ p3 " in the above signal of two-way, need RMB to have following modules at least more than two: demodulation module, FFT module, IFFT module, transmission channel module.Here suppose that RMB only processes p1 ", then:
RMB by demodulation module by p1 " carry out demodulation, obtain the p1 after demodulation " ', then by FFT module by p1 " the initial data p1 of ' carry out FFT; remove data " 0 "; obtain p1 " ', finally by IFFT module, p1 is carried out IFFT process again, obtains the p1 ' of frequency identical with p0 '.
Finally, RMB sends p1 ' to UE, and now UE receives the p0 ' closed in the signal of road simultaneously, the p1 ' sent with RMB.Wherein, p0 ' can determine according to actual conditions the memory time in the buffer memory of BBU and RRU, and processing time and other possible time delays of such as reference RMB consider and determine, and the p0 ' that UE is received and p1 ' are synchronous in time.As can be seen here, by the mode of another kind of wireless transmission, also achieve MIMO in the uplink of indoor heating system, improve systematic function.
In sum, the indoor multiaerial system that the embodiment of the present invention provides, when downlink transfer, in the multiple antenna channels signals exported base station by LMU, outside the first antenna channel signal, other antenna channels signals carry out the frequency conversion of different frequent points, again other antenna channels signals after described first antenna channel signal and described frequency conversion are carried out conjunction road, the conjunction road signal obtained is sent to UE and RMB simultaneously, wherein RMB is also sent to this UE after the frequency of at least one signal in other antenna channels signals after frequency conversion is returned to original frequency, make UE can receive the first antenna channel signal closed in the signal of road simultaneously, the restoring signal of the frequency recovery of at least one signal, thus wirelessly realize MIMO when downlink transfer, when uplink, UE is simultaneously to the upward signal that signal transmitting and receiving branch road and RMB send, then the upward signal after frequency conversion sends to signal transmitting and receiving branch road by RMB, after upward signal after frequency conversion is returned to original frequency by LMU again, restoring signal and the upward signal received are sent to base station, thus wirelessly also realize MIMO when uplink, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
The embodiment of the present invention provides a kind of outdoor multiaerial system, and as shown in Figure 8, this outdoor multiaerial system comprises:
Base station, local module (LocalModule, hereinafter referred to as LM), first day wire module, the second Anneta module, at least one evolution remote radio unit (RRU) (advancedRRU, hereinafter referred to as aRRU), at least one evolution remote end module (advancedRemoteModule, hereinafter referred to as: aRM);
For downlink transfer, base station exports multiple antenna channels signal, is one group with at least two antenna channels signals, and each signal number organized in antenna channels signal is identical;
Base station sends first group of antenna channels signal by first day wire module to UE;
LM is used at least one group of antenna channels signal except first group of antenna channels signal to be sent at least one aRRU by the second Anneta module;
If the next stage of aRRU is another aRRU, then aRRU is used at least one group of antenna channels signal at least one group of antenna channels signal received to send to another aRRU; The frequency conversion of different frequent points is carried out respectively if the next stage of aRRU is aRM, aRRU for each antenna channels signal at least one group of antenna channels signal at least one group of antenna channels signal will receiving, obtain the antenna channels signal after at least one group of frequency conversion, and send to aRM;
ARM is used for the frequency of each antenna channels signal in the antenna channels signal after at least one group of frequency conversion received correspondence to return to the frequency with each antenna channels signal in first group of antenna channels signal, obtain the antenna channels signal after at least one group of recovery, and send to UE;
First group of antenna channels signal that UE sends for receiving first day wire module, and receive the antenna channels signal after at least one group of recovery of aRM transmission.
Exemplary, as shown in Figure 8, due to Anneta module many employings double antenna of outdoor multiaerial system, therefore first day wire module in the present embodiment and the second Anneta module are also double antenna, the antenna channels signal of many strip antennas channel transfer of base station can be one group with two signals, such as, suppose that the antenna channels signal of base station has p0, p1, p2, p3, p2 ', p3 ', p2 ", p3 ", p0/p1 can be divided into, p2/p3, p2 '/p3 ', p2 "/p3 " four groups ("/" represents " with " the meaning), wherein the signal of each group can be identical signal or unlike signal.
Wherein, above-mentioned base station can be eNB, and comprising: BBU, RRU, BBU with RRU is connected, LM with BBU is connected.P0/p1 sends (hereinafter for UE1) by first day wire module directly to UE by RRU, p2/p3, p2 '/p3 ', p2 "/p3 " then sent to aRRU by the second Anneta module by LM.Wherein, the transfer of data between LM and aRRU can pass through common public radio interface (CommonPublicRadioInterface, hereinafter referred to as CPRI) realization in a digital manner.
ARRU0 receives p2/p3, p2 as shown in Figure 8 '/p3 ', p2 "/p3 " aRRU1 of backward subordinate transmits p2/p3, p2 '/p3 ', p2 "/p3 " at least one group of signal, that aRRU0 exemplary in Fig. 8 sends to aRRU1 is p2/p3, p2 '/p3 '.Wherein, the transfer of data between aRRU also can be realized by CPRI in a digital manner.
By p2/p3, p2 after aRRU1 receives ' in/p3 ' at least one group, such as p2 '/p3 ' carries out the frequency conversion of different frequent points respectively, and become a frequency by p2 ', p3 ' becomes another frequency.Then the p2 ' after frequency conversion/p3 ' is sent to aRM1.Wherein, the transfer of data between aRRU and aRM can pass through air interface.
After aRM1 receives p2 '/p3 ', again frequency conversion is carried out to p2 '/p3 ', the frequency of p2 ' is returned to the frequency identical with p0, the frequency of p3 ' returns to the frequency identical with p1, then again the p2 '/p3 ' after recovery is sent to UE1, now UE1 just can receive p0/p1 and p2 '/p3 ' simultaneously.Wherein, can also introduce reference clock signal when carrying out frequency conversion, this signal is provided by base station and sends in the lump with antenna channel signal, or this signal can be gps signal.
Certainly, UE1 can also be made to receive p0/p1, p2/p3, p2 by configuration aRRU simultaneously '/p3 ', p2 "/p3 ", and above-mentioned base station sends p0/p1, p2/p3, p2 '/p3 ', p2 "/p3 " be only only exemplary, base station also may send more groups of signals, UE also just can receive more groups of signals simultaneously, as can be seen here, do not increasing on the basis of antenna amount, antenna channels signal can be rolled up, wirelessly achieve the extensive MIMO of downlink transfer, improve systematic function.
Signal in addition, it is worth mentioning that, if when aRM1 cannot obtain signal from aRRU for a certain reason, first can be sent to aRM0 by aRRU, is sent to aRM1 by aRM0.Wherein, the transfer of data between aRM can be realized by air interface in an analog fashion.Further, in the implementation that another kind is possible, aRM also can be directly connected with LM by the second Anneta module, and its transmission method is similar with the downlink transmission method be connected with LMU of RMB in previous embodiment.
For uplink, comprising:
UE is also for sending upward signal to first day wire module and an aRM;
The upward signal of aRM also for receiving carries out the synchronous and analog-to-digital conversion process of signal, and transfers the signal after process to I/Q data signal, and is sent by the aRRU of I/Q data signal to aRM higher level;
If the higher level of aRRU is the second Anneta module, the I/Q data signal of aRRU also for receiving sends to the second Anneta module; If the higher level of aRRU be another aRRU, aRRU also for the I/Q data received signal is sent to another aRRU, until be sent to the second Anneta module;
Base station also for receiving the upward signal that first day wire module receives, and receives the I/Q data signal that local module received by the second Anneta module.
Exemplary, as shown in Figure 9:
The aRM1 of UE1 superior sends a upward signal, is assumed to be p.
The p received is carried out the synchronous and analog-to-digital conversion process of signal by aRM1, and transfer the signal after process to inphase quadrature (In-phase, Quadrature, hereinafter referred to as: IQ) data-signal, and I/Q data signal is sent to the second Anneta module by least one aRRU of aRM1 higher level, such as, in Fig. 8, aRM1 sends I/Q data signal to transmission aRRU1, aRRU1 sends I/Q data signal to aRRU0, aRRU0 sends I/Q data signal to the second Anneta module, second Anneta module by I/Q data Signal transmissions to LM, LM by I/Q data Signal transmissions to the BBU of base station, the upward signal p received is transferred to BBU by RRU by first day wire module simultaneously, the BBU of visible base station have received I/Q data signal and these two groups of signals of upward signal p simultaneously.
Or uplink can comprise:
UE is also for sending upward signal to first day wire module and an aRM;
ARM also for upward signal is carried out frequency conversion, obtains the upward signal after frequency conversion, and sends to the aRRU of aRM higher level;
If the higher level of aRRU is the second Anneta module, aRRU also sends to the second Anneta module for the upward signal after the frequency conversion that will receive; If the higher level of aRRU be another aRRU, aRRU also for the upward signal after the frequency conversion received is sent to another aRRU, until be sent to the second Anneta module;
LM also returns to the frequency identical with upward signal, the upward signal after being restored for the frequency of the upward signal after the frequency conversion that received by the second Anneta module, and sends the upward signal after recovering to base station;
Base station also for receiving the upward signal that first day wire module receives, and receives the upward signal after the recovery of LM transmission.
Exemplary, as shown in Figure 10, still send a upward signal for the aRM1 of UE1, UE1 superior, be assumed to be p.
After aRM1 receives p, p is carried out frequency conversion and obtains p ', then the p ' after frequency conversion is transferred to the second Anneta module by least one-level aRRU, as shown in Figure 9, aRM1 sends the p ' after frequency conversion to aRRU1, aRRU1 sends the p ' after frequency conversion to aRRU0, and aRRU0 sends the p ' after frequency conversion to the second Anneta module.
After second Anneta module receives the p ' after frequency conversion, p ' after frequency conversion is sent to LM, LM by the p ' after frequency conversion again through frequency conversion, the frequency of the p ' after frequency conversion is reverted to the frequency identical with p and obtains p " (can be understood as p " be exactly that p ' is reverted back p,), then by the p after recovery " be sent to base station, now base station just have received p and the p after recovering simultaneously " two paths of signals.
Optionally, in the implementation that another kind is possible, aRM also can be directly connected with LM by the second Anneta module, and its transmission method is similar with the ascending transmission method be connected with LMU of RMB in previous embodiment.
In the present embodiment, LM can be in a base station built-in, also can be external in base station, Fig. 8, Fig. 9, Figure 10 shows that and be built in base station.
Can be found out by above-described embodiment, when downlink transfer, base station can receive two paths of signals simultaneously, is certainly above-mentionedly only exemplary, because outdoor system may be that a lot of UE serves, so also may receive more groups of signals by above method base station simultaneously, as can be seen here, do not increasing on the basis of antenna amount, antenna channels signal can rolled up, wirelessly achieve the extensive MIMO of uplink, improve systematic function.
In sum, the outdoor multiaerial system that the embodiment of the present invention provides, when downlink transfer, by first day wire module, one group of antenna channels signal is sent to UE, by the second Anneta module, other are organized antenna channels Signal transmissions to aRRU again, aRRU transfers to aRM after other group antenna channels signals are carried out frequency conversion, after other group antenna channels signals carry out frequency conversion again after frequency conversion, original frequency is recovered by aRM, and send to UE, thus make UE can receive many group antenna channels signals simultaneously, thus wirelessly realize extensive MIMO when downlink transfer, when uplink, first day wire module receives the upward signal that UE sends, thus send to base station, aRM receives after this upward signal is carried out a series of process by the upward signal sent and sends to aRRU, the second Anneta module is sent to by aRRU, thus send to base station, make base station can receive many group antenna channels signals simultaneously, thus wirelessly realize extensive MIMO when uplink, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
The embodiment of the present invention provides a kind of multiple antennas implementation method, can be applicable to multiaerial system in aforementioned compartment, and as shown in figure 11, the method comprises:
In S101, multiple antenna channels signals of being exported base station, other antenna channels signals carry out frequency conversion outside the first antenna channel signal, obtain other antenna channels signals after frequency conversion, in other antenna channels signals wherein after frequency conversion, the frequency of each signal is different.
S102, other antenna channels signals after the first antenna channel signal and frequency conversion are carried out conjunction road, obtain closing road signal.
S103, to send to UE and at least one far-end input multi output box RMB and close road signal, to receive the RMB closing road signal the frequency of at least one signal in other antenna channels signals after the frequency conversion in the conjunction road signal received is returned to the frequency identical with the first antenna channel signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one being recovered sends to UE, make UE obtain the first antenna channel signal closed in the signal of road, and receive the antenna channels signal after at least one recovery of at least one RMB transmission.
The multiple antennas implementation method that the embodiment of the present invention provides, in the multiple antenna channels signals exported base station by LMU, outside the first antenna channel signal, other antenna channels signals carry out the frequency conversion of different frequent points, again other antenna channels signals after the first antenna channel signal and frequency conversion are carried out conjunction road, the conjunction road signal obtained is sent to UE and RMB simultaneously, wherein RMB is also sent to this UE after the frequency of at least one signal in other antenna channels signals after frequency conversion is returned to original frequency, make UE can receive the first antenna channel signal closed in the signal of road simultaneously, the restoring signal of the frequency recovery of at least one signal, thus wirelessly realize MIMO, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
The technical scheme more clearly understood the embodiment of the present invention to enable those skilled in the art and provide, below by specific embodiment, the multiple antennas implementation method that embodiments of the invention provide is described in detail, exemplary, the present embodiment can be applicable to multiaerial system in aforementioned compartment, this indoor multiaerial system comprises: base station, LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with feeder line, and at least one RMB.
When downlink transfer, as shown in figure 12, the method comprises:
In multiple antenna channels signals that base station exports by S201, LMU, outside the first antenna channel signal, other antenna channels signals carry out frequency conversion, obtain other antenna channels signals after frequency conversion, in other antenna channels signals wherein after frequency conversion, the frequency of each signal is different.
Other antenna channels signals after first antenna channel signal and frequency conversion are carried out conjunction road by S202, combiner unit, obtain closing road signal.
S203, signal transmitting and receiving Zhi Luxiang UE and at least one far-end input multi output box RMB sends and closes road signal.
The frequency of at least one signal in other antenna channels signals after frequency conversion in the conjunction road signal received is returned to the frequency identical with the first antenna channel signal by S204, RMB, obtains the antenna channels signal after at least one recovery.
S205, RMB by obtain at least one recover after antenna channels signal send to UE.
S206, UE obtain the first antenna channel signal closed in the signal of road, and receive the antenna channels signal after at least one recovery of at least one RMB transmission.
Wherein, the concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Fig. 1, specifically can refer to the content in the aforementioned system shown in Fig. 1, repeat no more.
When uplink, as shown in figure 13, the method comprises:
S207, signal transmitting and receiving branch road receive UE send upward signal, and receive at least one RMB send frequency conversion after upward signal.
Upward signal after frequency conversion is returned to the frequency identical with upward signal, the upward signal after being restored by S208, LMU.
S209, LMU send upward signal and the upward signal after recovering to base station.
Wherein, the concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Fig. 2, specifically can refer to the content in the aforementioned system shown in Fig. 2, repeat no more.
In sum, the multiple antennas implementation method that the embodiment of the present invention provides, when downlink transfer, in the multiple antenna channels signals exported base station by LMU, outside the first antenna channel signal, other antenna channels signals carry out the frequency conversion of different frequent points, again other antenna channels signals after the first antenna channel signal and frequency conversion are carried out conjunction road, the conjunction road signal obtained is sent to UE and RMB simultaneously, wherein RMB is also sent to this UE after the frequency of at least one signal in other antenna channels signals after frequency conversion is returned to original frequency, make UE can receive the first antenna channel signal closed in the signal of road simultaneously, the restoring signal of the frequency recovery of at least one signal, thus wirelessly realize MIMO when downlink transfer, when uplink, UE is simultaneously to the upward signal that signal transmitting and receiving branch road and RMB send, then the upward signal after frequency conversion sends to signal transmitting and receiving branch road by RMB, after upward signal after frequency conversion is returned to original frequency by LMU again, restoring signal and the upward signal received are sent to base station, thus wirelessly also realize MIMO when uplink, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
In addition, optionally, said method also can adopt discrete spectrum signal to realize, exemplary, the embodiment of the present invention also provides another kind of multiple antennas implementation method, can be applied to multiaerial system in aforementioned compartment, this indoor multiaerial system comprises: base station, LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with feeder line, and at least one RMB; Wherein, base station exports multiple antenna channels signal.As shown in figure 14, the method comprises:
S301, the first antenna channel signal in multiple antenna channels signal is carried out Fast Fourier Transform Inverse (InverseFastFourierTransform, hereinafter referred to as: IFFT) or inverse discrete Fourier transform change (InverseDiscreteFourierTransform, hereinafter referred to as: IDFT) obtain the first discrete antenna channel signal, IFFT or IDFT is carried out in other antenna channels signals and the first data aggregate outside first antenna channel signal, obtains other discrete antenna channels signals.
S302, other discrete antenna channels signals to be modulated, obtain other antenna channels signals after modulating.
S303, the first antenna channel signal after modulation is carried out buffer memory after with modulation after other antenna channels signals carry out conjunctions road, obtain conjunction road signal.
S304, road signal will be closed send to UE and at least one RMB, to receive the RMB that closes road signal by the conjunction road signal that receives, in other antenna channels signals after modulation at least one signal carry out demodulation obtain at least one demodulation after other antenna channels signals, again fast Fourier transform (FastFourierTransform is carried out to other antenna channels signals after demodulation, FFT) or inverse discrete Fourier transform change (DiscreteFourierTransform, DFT) the first data are removed, obtain the primary signal of at least one other antenna channels signal, again the primary signal of at least one other antenna channels signal is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of the first discrete antenna channel signal, other discrete antenna channels signals that at least one is identical with the frequency of the first discrete antenna channel signal send to UE, UE is made to receive the conjunction road signal of a bars transmitting-receiving branch road transmission, obtain the first discrete antenna channel signal closed in the signal of road, and receive at least one discrete other antenna channels signal identical with the frequency of the first discrete antenna channel signal of at least one RMB transmission.
Wherein, the concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Fig. 7, specifically can refer to the content in the aforementioned system shown in Fig. 7, repeat no more.
In sum, the multiple antennas implementation method that the present embodiment provides, first the first antenna channel signal in the multiple antenna channels signals exported base station carries out IFFT or IDFT process, other antenna channels signals and the first data are carried out IFFT or IDFT process, send to transmission UE and at least one RMB after then the multiple discrete antenna channels signal obtained being closed road, receive the RMB closing road signal the conjunction road signal received to be carried out demodulation and carries out FFT or DFT to other antenna channels signals after demodulation remove the first data, obtain the primary signal of at least one other antenna channels signal, then primary signal is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of the first discrete antenna channel signal, and this signal is sent to UE, thus UE just have received other the discrete antenna channels signals closing the first discrete antenna channel signal in road signal and RMB and send, thus wirelessly realize MIMO, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
The embodiment of the present invention also provides a kind of multiple antennas implementation method, and can be applicable to the outer multiaerial system of aforementioned compartment, as shown in figure 15, the method comprises:
S401, send first group of antenna channels signal to UE.
S402, at least one group of antenna channels signal except first group of antenna channels signal to be sent at least one aRRU; Wherein, each group antenna channels signal comprises at least two antenna channels signals in multiple antenna channels signals of base station output, and each signal number organized in antenna channels signal is identical.
So that after at least one aRRU receives at least one group of antenna channels signal, if the next stage of aRRU is another aRRU, then at least one group of antenna channels signal at least one group of antenna channels signal received sends to another aRRU by aRRU, if the next stage of aRRU is aRM, then each antenna channels signal at least one group of antenna channels signal at least one group of antenna channels signal received is carried out the frequency conversion of different frequent points by aRRU respectively, obtain the antenna channels signal after at least one group of frequency conversion, and send to aRM, so that the frequency of each antenna channels signal in the antenna channels signal after at least one group of frequency conversion received correspondence is returned to the frequency with each antenna channels signal in first group of antenna channels signal by aRM, obtain the antenna channels signal after at least one group of recovery, and send to UE, make UE for receiving the antenna channels signal after first group of antenna channels signal and at least one group of recovery.
The technical scheme more clearly understood the embodiment of the present invention to enable those skilled in the art and provide, below by specific embodiment, the multiple antennas implementation method that embodiments of the invention provide is described in detail, exemplary, the present embodiment can be applicable to the outer communication system of aforementioned compartment, and this outdoor multiaerial system comprises: base station, LM, first day wire module, the second Anneta module, at least one aRRU, at least one aRM; Wherein, base station exports multiple antenna channels signal, is one group with at least two antenna channels signals, and each signal number organized in antenna channels signal is identical.When downlink transfer, as shown in figure 16, the method comprises:
S501, base station send first group of antenna channels signal by first day wire module to UE.
At least one group of antenna channels signal except first group of antenna channels signal is sent at least one aRRU by the second Anneta module by S502, LM.
S503, aRRU if the next stage of aRRU is another aRRU, then perform S504 after receiving at least one group of antenna channels signal; If the next stage of aRRU is aRM, then perform S505.
At least one group of antenna channels signal at least one group of antenna channels signal received sends to another aRRU by S504, aRRU.
Each antenna channels signal at least one group of antenna channels signal at least one group of antenna channels signal received is carried out the frequency conversion of different frequent points by S505, aRRU respectively, obtains the antenna channels signal after at least one group of frequency conversion, and sends to aRM.
The frequency of each antenna channels signal in the antenna channels signal after at least one group of frequency conversion received correspondence is returned to the frequency with each antenna channels signal in first group of antenna channels signal by S506, aRM, obtain the antenna channels signal after at least one group of recovery, and send to UE.
S507, UE receive the antenna channels signal after first group of antenna channels signal and at least one group of recovery.
Wherein, the concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Fig. 8, specifically can refer to the content in the aforementioned system shown in Fig. 8, repeat no more.
When uplink, as shown in figure 17, the method comprises:
S508, base station receive the upward signal that UE sends.
S509, base station receive the I/Q data signal that at least one aRRU sends; I/Q data signal carries out the synchronous and analog-to-digital conversion process of signal by aRM to upward signal, and obtain after the signal conversion after process, and be sent to aRRU's.
Wherein, upward signal is that base station is received by first day wire module, and the I/Q data signal that at least one aRRU sends is received from the second Anneta module by LM.The order of S508, the S509 shown in Figure 17 is exemplary, and in actual conditions, S508, S509 also can perform simultaneously.
The concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Fig. 9, specifically can refer to the content in the aforementioned system shown in Fig. 9, repeat no more.
Or when uplink, as shown in figure 18, the method comprises:
The upward signal that S510, base station receives user equipment send.
S511, LM receive the upward signal after the frequency conversion of at least one aRRU transmission.Upward signal after frequency conversion generates after carrying out frequency conversion by aRM to upward signal, and be sent to aRRU's.
The frequency of the upward signal after the frequency conversion received is returned to the frequency identical with upward signal by S512, LM, the upward signal after being restored, and the upward signal after recovering is sent to base station.
S513, base station receive the upward signal after the recovery of LM transmission.Thus base station just obtains the upward signal that subscriber equipment sends, and the upward signal after the recovery of LM transmission.
The concrete grammar of each step above-mentioned, the structure performing the unit of above-mentioned steps and unit annexation, identical to the content in antenna system with the indoor shown in Figure 10, specifically can refer to the content in the aforementioned system shown in Figure 10, repeat no more.
In sum, the multiple antennas implementation method that the embodiment of the present invention provides, when downlink transfer, by first day wire module, one group of antenna channels signal is sent to UE, by the second Anneta module, other are organized antenna channels Signal transmissions to aRRU again, aRRU transfers to aRM after other group antenna channels signals are carried out frequency conversion, after other group antenna channels signals carry out frequency conversion again after frequency conversion, original frequency is recovered by aRM, and send to UE, thus make UE can receive many group antenna channels signals simultaneously, thus wirelessly realize extensive MIMO when downlink transfer, when uplink, first day wire module receives the upward signal that UE sends, thus send to base station, aRM receives after this upward signal is carried out a series of process by the upward signal sent and sends to aRRU, the second Anneta module is sent to by aRRU, thus send to base station, make base station can receive many group antenna channels signals simultaneously, thus wirelessly realize extensive MIMO when uplink, can realize multi-antenna technology when not increasing allocating antenna as seen, thus systematic function can be improved when not raising the cost.
In several embodiment provided by the present invention, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform the part steps of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, ROM), random access memory (RandomAccessMemory, RAM), magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (32)

1. an indoor multiaerial system, it is characterized in that, described indoor multiaerial system comprises: base station, local multiple-input and multiple-output unit LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with described feeder line, and at least one far-end input multi output box RMB; Wherein, described base station exports multiple antenna channels signal;
Described LMU is used for other antenna channels signals outside the first antenna channel signal in described multiple antenna channels signal to carry out frequency conversion, obtain other antenna channels signals after frequency conversion, in other antenna channels signals after wherein said frequency conversion, the frequency of each signal is different;
Described combiner unit is used for other antenna channels signals after described first antenna channel signal and described frequency conversion to carry out conjunction road, obtains closing road signal; Described conjunction road signal transfers to described at least one signal transmitting and receiving branch road by described feeder line, and sends described conjunction road signal to RMB described in subscriber equipment and at least one;
Described RMB is used for will in the described conjunction road signal that receive, in other antenna channels signals after described frequency conversion, the frequency of at least one signal returns to the frequency identical with described first antenna channel signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one recovery described is sent to described subscriber equipment;
The described conjunction road signal that described subscriber equipment sends for receiving a bars transmitting-receiving branch road, obtains the described first antenna channel signal in the signal of described conjunction road, and receives the antenna channels signal after at least one recovery described of RMB transmission described at least one.
2. indoor multiaerial system according to claim 1, is characterized in that, also comprise:
Described subscriber equipment is used for sending upward signal to a described bars transmitting-receiving branch road and RMB described at least one;
Described RMB for receiving described upward signal, and carries out frequency conversion to the described upward signal received, and obtains the upward signal after frequency conversion, and sends the upward signal after described frequency conversion to a described bars transmitting-receiving branch road;
Upward signal after described upward signal and described frequency conversion for receiving the upward signal after described upward signal and described frequency conversion, and is transferred to described LMU as a road signal by described feeder line by a described bars transmitting-receiving branch road;
Described LMU is used for the upward signal after described frequency conversion to return to the frequency identical with described upward signal, the upward signal after being restored, and by the uplink signal transmissions after described upward signal and described recovery to described base station.
3. indoor multiaerial system according to claim 1 and 2, is characterized in that,
Described combiner unit is external in described LMU, wherein, the first end of described LMU is connected with described base station, and second end of described LMU is connected with the first end of described combiner unit, and the second end of described combiner unit is connected with signal transmitting and receiving branch road described in every bar by described feeder line;
Or described combiner unit is built in described LMU, the first end of described LMU is connected with described base station, and second end of described LMU is connected with signal transmitting and receiving branch road described in every bar with by described feeder line;
Described LMU is external in described base station, or is built in described base station;
Wherein, described signal transmitting branch comprises: coupler, power splitter, at least one antenna, the input of described coupler is connected with described feeder line, the output of described coupler is connected with the input of described power splitter, and the output of described power splitter is connected with antenna described in every root.
4. indoor multiaerial system according to claim 3, is characterized in that, described combiner unit specifically for:
Obtain at least one in the reference clock signal of the predeterminated frequency that described base station exports, pre-determined synchronization signal, Operation and Maintenance signal;
By other antenna channels signals after described first antenna channel signal, described frequency conversion, and the signal of described predeterminated frequency, described pre-determined synchronization signal, at least one in described Operation and Maintenance signal carry out conjunction road, obtain described conjunction road signal.
5. indoor multiaerial system according to claim 4, is characterized in that, described reference clock signal comprises signal that frequency is 10MHz or frequency is the signal of 122.88MHz;
When described indoor multiaerial system is applied to tdd systems, described pre-determined synchronization signal is the control signal of Transmit enable;
Described Operation and Maintenance signal comprises at least one in gain control signal, timing_delay estimation signal, phase adjustment signal.
6. indoor multiaerial system according to claim 5, is characterized in that, described RMB also for:
Adjust according to the transmission characteristic parameter of described Operation and Maintenance signal to the down link of described RMB, the transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
7. indoor multiaerial system according to claim 2, is characterized in that, described RMB also for:
According to the described conjunction road signal received, or according to the described upward signal that described subscriber equipment sends, the transmission characteristic parameter of the down link of described RMB is adjusted; The transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
8. indoor multiaerial system according to claim 2, is characterized in that, described base station also for:
The described upward signal sent according to described subscriber equipment, or the channel status instruction that described subscriber equipment sends, adjust the transmission characteristic parameter of the down link of described RMB, the transmission characteristic parameter of described down link comprises at least one in gain amplifier, delay parameter, phase parameter.
9. indoor multiaerial system according to claim 3, is characterized in that, described base station also for:
When initialization, the parameter of the signal transmitted according to described many strip antennas passage of initial transmission characterisitic parameter to described base station of the down link of described RMB adjusts, and the error of the parameter of the antenna channels signal that described many strip antennas passage is transmitted is in preset range;
Wherein, the initial transmission characterisitic parameter of described down link comprises: at least one in gain amplifier, delay parameter, phase parameter;
The parameter of described antenna channels signal comprises at least one in time delay, amplitude, phase place.
10. indoor multiaerial system according to claim 3, is characterized in that,
The all antenna channels signal acquisition measurement results of described subscriber equipment also for receiving according to described subscriber equipment, and described measurement result is sent to described base station, described measurement result comprises the signal to noise ratio of each antenna channels signal that can receive;
Described base station is also for the message transmission rate current according to described measurement result, data that in the stipulated time, described subscriber equipment is scheduled and described subscriber equipment, and adoption rate equity criterion is described dispatching user facility running time-frequency resource.
11. 1 kinds of local multiple-input and multiple-output unit LMU, it is characterized in that, described LMU comprises: at least one downlink transfer unit, and described downlink transfer unit comprises: the first frequency converter, the first filter, the first power amplifier module and first duplexer;
Wherein, the signal of any antenna passage of base station inputs from the first input end of described first frequency converter, the output of described first frequency converter is connected with the input of described first filter, the output of described first filter is connected with the input of described first power amplifier module, the output of described first power amplifier module is connected with the input of described first duplexer, the feeder line in the output junction chamber of described first duplexer in multiaerial system.
12. LMU according to claim 11, is characterized in that, described downlink transfer unit also comprises: the second filter, power splitter, the second power amplifier module and the first phase-locked loop;
Wherein, the input of described second filter is used for input reference clock signal, the output of described second filter connects the input of described power splitter, first output of described power splitter connects the input of described first phase-locked loop, the output of described first phase-locked loop connects the second input of described first frequency converter, second output of described power splitter connects the input of described second power amplifier module, the first duplexer described in output connection of described second power amplifier module;
Pre-determined synchronization signal is connected described first duplexer with Operation and Maintenance signal.
13. LMU according to claim 11 or 12, it is characterized in that, described LMU also comprises: at least one uplink unit, and described uplink unit comprises: the second duplexer, the 3rd power amplifier module, the 4th power amplifier module, the second frequency converter, the 3rd filter, the 5th power amplifier module;
Wherein, feeder line in the input junction chamber of described second duplexer in multiaerial system, first output of described second duplexer connects the input of described 3rd power amplifier module, and the output of described 3rd power amplifier module connects the base station in described indoor multiaerial system; Second output of described second duplexer connects the input of described 4th power amplifier module, the output of described 4th power amplifier module connects the first input end of described second frequency converter, the output of described second frequency converter connects the input of described 3rd filter, the output of described 3rd filter connects the output of described 5th power amplifier module, and the output of described 5th power amplifier module connects described base station.
14. LMU according to claim 13, is characterized in that, described uplink unit also comprises: the 6th power amplifier module and the second phase-locked loop;
Wherein, the input of described 6th power amplifier is used for input reference clock signal, and the output of described 6th power amplifier connects the input of described second phase-locked loop, and the output of described second phase-locked loop connects the second input of described second frequency converter.
15. LMU according to claim 14, it is characterized in that, described second power amplifier module, described 3rd power amplifier module, described 4th power amplifier module, described 5th power amplifier module, described 6th power amplifier module are power amplifier;
Described first power amplifier module is composed in series by adjustable gain power amplifier and a power amplifier.
16. 1 kinds of far-end input multi output box RMB, it is characterized in that, described RMB comprises: at least one downlink transfer unit, the first antenna and the second antenna, and described downlink transfer unit comprises: first duplexer, the first power amplifier module, the first frequency converter, the first filter, the second power amplifier module;
Wherein, described first antenna connects the input of described first duplexer, first output of described first duplexer connects the input of described first power amplifier, the output of described first power amplifier module connects the first input end of described first frequency converter, the output of described first frequency converter connects the input of described first filter, the output of described first filter connects the input of described second power amplifier module, and the output of described second power amplifier module connects described second antenna.
17. far-end input multi output box RMB according to claim 16, it is characterized in that, described downlink transfer unit also comprises: the 3rd power amplifier module, the first phase-locked loop;
Wherein, second output of described first duplexer connects the input of described 3rd power amplifier module, second output of described first duplexer is for exporting the reference clock signal received, the output of described 3rd power amplifier module connects the input of described first phase-locked loop, and the output of described first phase-locked loop connects the second input of described first frequency converter.
18. RMB according to claim 16 or 17, it is characterized in that, described RMB also comprises: at least one uplink unit, and described uplink unit comprises: the second filter, the 4th power amplifier module, the second frequency converter, the 3rd filter, the 5th power amplifier module;
Wherein, described first antenna connects the input of described second filter, the output of described second filter connects the input of described 4th power amplifier module, the output of described 4th power amplifier module connects the first input end of described second frequency converter, the output of described second frequency converter connects the input of described 3rd filter, the output of described 3rd filter connects the input of described 5th power amplifier, and the output of described 5th power amplifier connects described second antenna.
19. RMB according to claim 18, is characterized in that, described uplink unit also comprises: the 4th filter, power splitter and the second phase-locked loop;
Wherein, the input of described 4th filter is used for input reference clock signal, the output of described 4th filter connects the input of described power splitter, the output of described power splitter connects the input of described second phase-locked loop, and the output of described second phase-locked loop connects the second input of described second frequency converter.
20. RMB according to claim 19, is characterized in that,
Described first power amplifier module, described 3rd power amplifier module, described 4th power amplifier module are power amplifier;
Described second power amplifier module and described 5th power amplifier module are composed in series by adjustable gain power amplifier and a power amplifier.
21. 1 kinds of indoor multiaerial systems, it is characterized in that, described indoor multiaerial system comprises: base station, local multiple-input and multiple-output unit LMU, combiner unit, feeder line, at least one signal transmitting and receiving branch road that is connected with described feeder line, and at least one far-end input multi output box RMB; Wherein, described base station exports multiple antenna channels signal;
Described base station is used for the first antenna channel signal in described multiple antenna channels signal to carry out Fast Fourier Transform Inverse IFFT or inverse discrete Fourier transform and changes IDFT and obtain the first discrete antenna channel signal, IFFT or IDFT is carried out in other antenna channels signals and the first data aggregate outside first antenna channel signal, obtains other discrete antenna channels signals;
Described LMU is used for described other discrete antenna channels signals to modulate, and obtains other antenna channels signals after modulating;
Described base station transfers to described combiner unit after the first antenna channel signal after modulation is carried out buffer memory, and described LMU is by the extremely described combiner unit of other antenna channels Signal transmissions after modulation;
Described combiner unit is used for other antenna channels signals after described the first discrete antenna channel signal and described modulation to carry out conjunction road, obtains closing road signal; Described conjunction road signal is sent at least one signal transmitting and receiving branch road by described feeder line by described combiner unit, and sends described conjunction road signal to RMB described in subscriber equipment and at least one;
Described RMB is used for will in the described conjunction road signal that receive, in other antenna channels signals after described modulation at least one signal carry out demodulation obtain at least one demodulation after other antenna channels signals, again FFT or DFT is carried out to other antenna channels signals after described demodulation and remove described first data, obtain the primary signal of at least one other antenna channels signal, again the primary signal of at least one other antenna channels signal described is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of described the first discrete antenna channel signal, at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described are sent to described subscriber equipment,
The described conjunction road signal that described subscriber equipment sends for receiving a bars transmitting-receiving branch road, obtain the first described discrete antenna channel signal in the signal of described conjunction road, and receive at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described of RMB transmission described at least one.
22. indoor multiaerial systems according to claim 21, is characterized in that,
Described combiner unit is external in described LMU, wherein, the first end of described LMU is connected with described base station, and second end of described LMU is connected with the first end of described combiner unit, and the second end of described combiner unit is connected with signal transmitting and receiving branch road described in every bar by described feeder line;
Or described combiner unit is built in described LMU, the first end of described LMU is connected with described base station, and second end of described LMU is connected with signal transmitting and receiving branch road described in every bar with by described feeder line;
Described LMU is external in described base station, or is built in described base station;
Described signal transmitting branch comprises: coupler, power splitter, at least one antenna, the input of described coupler is connected with described feeder line, the output of described coupler is connected with the input of described power splitter, and the output of described power splitter is connected with antenna described in every root.
23. 1 kinds of outdoor multiaerial systems, is characterized in that, described outdoor multiaerial system comprises: base station, local module, first day wire module, the second Anneta module, at least one evolution remote radio unit (RRU), at least one evolution remote end module; Described base station exports multiple antenna channels signal, is one group with at least two antenna channels signals, and each signal number organized in antenna channels signal is identical;
Described base station sends first group of antenna channels signal by described first day wire module to subscriber equipment;
Described local module is used at least one group of antenna channels signal except described first group of antenna channels signal to be sent at least one evolution remote radio unit (RRU) described by described second Anneta module;
If the next stage of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), then described evolution remote radio unit (RRU) is used at least one group of antenna channels signal in the described at least one group of antenna channels signal received to send to another evolution remote radio unit (RRU) described; If the next stage of described evolution remote radio unit (RRU) is described evolution remote end module, then described evolution remote radio unit (RRU) is used for the frequency conversion each antenna channels signal at least one group of antenna channels signal in the described at least one group of antenna channels signal received being carried out respectively different frequent points, obtain the antenna channels signal after at least one group of frequency conversion, and send to described evolution remote end module;
Described evolution remote end module is used for the frequency of each antenna channels signal in the antenna channels signal after the described at least one group of frequency conversion received correspondence to return to the frequency with each antenna channels signal in described first group of antenna channels signal, obtain the antenna channels signal after at least one group of recovery, and send to described subscriber equipment;
Described first group of antenna channels signal that described subscriber equipment sends for receiving described first day wire module, and receive the antenna channels signal after the described at least one group of recovery of described unlimited remote end module transmission.
24. outdoor multiaerial systems according to claim 23, is characterized in that,
Described subscriber equipment is also for sending upward signal to described first day wire module and an evolution remote end module;
Described evolution remote end module is also for carrying out the synchronous and analog-to-digital conversion process of signal by the described upward signal received, and transfer the signal after process to inphase quadrature I/Q data signal, and the evolution remote radio unit (RRU) of described I/Q data signal to described evolution remote end module higher level is sent;
If the higher level of described evolution remote radio unit (RRU) is described second Anneta module, the described I/Q data signal of described evolution remote radio unit (RRU) also for receiving sends to described second Anneta module; If the higher level of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), the described I/Q data signal of described evolution remote radio unit (RRU) also for receiving sends to another evolution remote radio unit (RRU) described, until be sent to described second Anneta module;
Described base station also for receiving the described upward signal that described first day wire module receives, and receives the described I/Q data signal that described local module received by described second Anneta module.
25. outdoor multiaerial systems according to claim 23, is characterized in that,
Described subscriber equipment is also for sending upward signal to described first day wire module and an evolution remote end module;
Described evolution remote end module also for described upward signal is carried out frequency conversion, obtains the upward signal after frequency conversion, and sends to the evolution remote radio unit (RRU) of described evolution remote end module higher level;
If the higher level of described evolution remote radio unit (RRU) is described second Anneta module, described evolution remote radio unit (RRU) also sends to described second Anneta module for the upward signal after the described frequency conversion that will receive; If the higher level of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), described evolution remote radio unit (RRU) also sends to another evolution remote radio unit (RRU) described, until be sent to described second Anneta module for the upward signal after the described frequency conversion that will receive;
Described local module also returns to the frequency identical with described upward signal for the frequency of the upward signal after the described frequency conversion that received by described second Anneta module, upward signal after being restored, and send the upward signal after described recovery to described base station;
Described base station also for receiving the described upward signal that described first antenna receives, and receives the upward signal after the described recovery of described local module transmission.
26., according to the arbitrary described outdoor multiaerial system of claim 23-25, is characterized in that,
First evolution remote end module also for the second evolution remote end module signal transmission, described signal comprise in the upward signal after the antenna channels signal after described frequency conversion, described I/Q data signal, described frequency conversion any one;
Described first evolution remote end module, described second evolution remote end module are any two the evolution remote end modules at least one evolution remote end module described.
27. 1 kinds of multiple antennas implementation methods, is characterized in that, described method comprises:
In the multiple antenna channels signals export base station, outside the first antenna channel signal, other antenna channels signals carry out frequency conversion, obtain other antenna channels signals after frequency conversion, and in other antenna channels signals after wherein said frequency conversion, the frequency of each signal is different;
Other antenna channels signals after described first antenna channel signal and described frequency conversion are carried out conjunction road, obtains closing road signal;
Described conjunction road signal is sent to subscriber equipment and at least one far-end input multi output box RMB, so that the frequency of at least one signal in other antenna channels signals after the described frequency conversion in the described conjunction road signal received is returned to the frequency identical with described first antenna channel signal by the described RMB receiving described conjunction road signal, obtain the antenna channels signal after at least one recovery, and the antenna channels signal after at least one recovery described is sent to described subscriber equipment, described subscriber equipment is made to obtain described first antenna channel signal in the signal of described conjunction road, and the antenna channels signal received after at least one recovery described of RMB transmission described at least one.
28. methods according to claim 27, is characterized in that, described method also comprises:
Receive described subscriber equipment send upward signal, and receive at least one RMB send frequency conversion after upward signal;
Upward signal after described frequency conversion returned to the frequency identical with described upward signal, the upward signal after being restored;
The upward signal after described upward signal and described recovery is sent to described base station.
29. 1 kinds of multiple antennas implementation methods, is characterized in that, described method comprises:
The first antenna channel signal in described multiple antenna channels signal is carried out Fast Fourier Transform Inverse IFFT or inverse discrete Fourier transform to change IDFT and obtain the first discrete antenna channel signal, IFFT or IDFT is carried out in other antenna channels signals and the first data aggregate outside first antenna channel signal, obtains other discrete antenna channels signals;
Described other discrete antenna channels signals are modulated, obtains other antenna channels signals after modulating;
After the first antenna channel signal after modulation is carried out buffer memory with described modulation after other antenna channels signals carry out conjunctions road, obtain conjunction road signal;
Described conjunction road signal is sent to RMB described in subscriber equipment and at least one, so that the described RMB receiving described conjunction road signal is by the described conjunction road signal that receives, in other antenna channels signals after described modulation at least one signal carry out demodulation obtain at least one demodulation after other antenna channels signals, again fast Fourier transform FFT or discrete Fourier transform DFT is carried out to other antenna channels signals after described demodulation and remove described first data, obtain the primary signal of at least one other antenna channels signal, again the primary signal of at least one other antenna channels signal described is carried out IFFT or IDFT, obtain other discrete antenna channels signals that at least one is identical with the frequency of described the first discrete antenna channel signal, at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described are sent to described subscriber equipment, described subscriber equipment is made to receive the described conjunction road signal of a bars transmitting-receiving branch road transmission, obtain the first described discrete antenna channel signal in the signal of described conjunction road, and receive at least one discrete other antenna channels signal identical with the frequency of described the first discrete antenna channel signal described of RMB transmission described at least one.
30. 1 kinds of multiple antennas implementation methods, is characterized in that, described method comprises:
First group of antenna channels signal is sent to subscriber equipment;
At least one group of antenna channels signal except described first group of antenna channels signal is sent at least one evolution remote radio unit (RRU) described; Wherein, each group antenna channels signal comprises at least two antenna channels signals in multiple antenna channels signals of base station output, and each signal number organized in antenna channels signal is identical;
So that after at least one evolution remote radio unit (RRU) described receives described at least one group of antenna channels signal, if the next stage of described evolution remote radio unit (RRU) is another evolution remote radio unit (RRU), then at least one group of antenna channels signal in the described at least one group of antenna channels signal received sends to another evolution remote radio unit (RRU) described by described evolution remote radio unit (RRU), if the next stage of described evolution remote radio unit (RRU) is described evolution remote end module, then each antenna channels signal at least one group of antenna channels signal in the described at least one group of antenna channels signal received is carried out the frequency conversion of different frequent points by described evolution remote radio unit (RRU) respectively, obtain the antenna channels signal after at least one group of frequency conversion, and send to described evolution remote end module, so that the frequency of each antenna channels signal in the antenna channels signal after the described at least one group of frequency conversion received correspondence is returned to the frequency with each antenna channels signal in described first group of antenna channels signal by described evolution remote end module, obtain the antenna channels signal after at least one group of recovery, and send to described subscriber equipment, make subscriber equipment for receiving the antenna channels signal after described first group of antenna channels signal and described at least one group of recovery.
31. methods according to claim 30, is characterized in that, described method also comprises:
Receive the upward signal that subscriber equipment sends;
Receive the I/Q data signal that at least one evolution remote radio unit (RRU) sends; Described I/Q data signal carries out the synchronous and analog-to-digital conversion process of signal by described evolution remote end module to described upward signal, and obtain after the signal conversion after process, and be sent to described evolution remote radio unit (RRU).
32. methods according to claim 30, is characterized in that, described method also comprises:
Receive the upward signal that subscriber equipment sends;
Receive the upward signal after the frequency conversion of at least one evolution remote radio unit (RRU) transmission; Upward signal after described frequency conversion generates after carrying out frequency conversion by described evolution remote end module to described upward signal, and be sent to described evolution remote radio unit (RRU);
The frequency of the upward signal after the described frequency conversion received is returned to the frequency identical with described upward signal, the upward signal after being restored.
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