CN103916877A - Signal processing method and radio remote unit (RRU) - Google Patents
Signal processing method and radio remote unit (RRU) Download PDFInfo
- Publication number
- CN103916877A CN103916877A CN201310004469.8A CN201310004469A CN103916877A CN 103916877 A CN103916877 A CN 103916877A CN 201310004469 A CN201310004469 A CN 201310004469A CN 103916877 A CN103916877 A CN 103916877A
- Authority
- CN
- China
- Prior art keywords
- bbu
- rru
- baseband signal
- sampling rate
- rate value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003672 processing method Methods 0.000 title abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 127
- 238000012545 processing Methods 0.000 claims abstract description 57
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 45
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000002194 synthesizing effect Effects 0.000 claims description 8
- 230000006855 networking Effects 0.000 abstract description 13
- 238000010295 mobile communication Methods 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 2
- 238000007726 management method Methods 0.000 abstract 2
- 230000008569 process Effects 0.000 description 19
- 239000013307 optical fiber Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 238000001914 filtration Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 101100015484 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GPA1 gene Proteins 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 101100067427 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FUS3 gene Proteins 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention relates to the technical field of communication, in particular to a signal processing method and a radio remote unit (RRU). The signal processing method and the RRU aim to solve the problem that in the prior art, centralized management and integrated planning of built mobile communication networks corresponding to multiple modes are difficult when the multiple modes exist. The signal processing method comprises the steps that the RRU which is connected with each baseband processing unit BBU of the multiple modes converts the received sampling rate value from the BBU baseband signal into the preset sampling rate value, and a radio frequency signal is determined through the RRU according to the converted baseband signal and is transmitted through at least one antenna. According to the signal processing method and the RRU, networking of the multi-mode BBU and one RRU is adopted, and the difficulty of centralized management and integrated planning of the built network is reduced.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method of signal processing and Remote Radio Unit.
Background technology
BBU(baseband processing unit) and RRU(Remote Radio Unit) networking, be called again distributed base station.Wherein, the networking principle of BBU and RRU is exactly that the baseband portion of traditional macro base station and radio frequency part are separated, be divided into respectively two equipment of BBU and RRU, BBU is responsible for processing and the transmission of baseband signal, RRU is responsible for converting the baseband signal from BBU to radiofrequency signal, go out from antenna transmission, and by from antenna reception to radiofrequency signal convert baseband signal to, send to BBU, between BBU and RRU, connect by optical fiber.The networking mode of BBU and RRU has fast, economy, feature that resource utilization is high compared with macro base station, at present large-scale application in mobile communications network is built.
During current mobile communications network is built, adopt the networking mode of a kind of standard BBU and a RRU, as depicted in figs. 1 and 2, in Fig. 1, single system machine room (, being furnished with the machine room of a kind of standard BBU) is connected to a RRU by an optical fiber; As shown in Figure 2, for every kind of standard BBU in multi-modulation scheme machine room (that is, being furnished with the machine room of multiple types BBU), be connected to a RRU by an optical fiber.
In current mobile communications network construction, adopt the networking mode of a kind of standard BBU and a RRU, thereby for every kind of standard, need to carry out separately networking, in the time there is multiple types, need the many covers RRU equipment that disperse respectively with corresponding BBU building network, the network being difficult to setting up is managed concentratedly and unified planning, and the cost of operation maintenance network is very high, and then hinder to a certain extent the development of mobile communications network.
In sum, due to during current mobile communications network builds, adopt the networking mode of a kind of standard BBU and a RRU, thereby during for multiple types, the network being difficult to setting up is managed and unified planning concentratedly.
Summary of the invention
Method and the Remote Radio Unit of a kind of signal processing that the embodiment of the present invention provides, in order to solve in prior art, exist for multiple types time, mobile communications network corresponding to multiple types being difficult to setting up manage and the problem of unified planning.
The method of a kind of signal processing that the embodiment of the present invention provides, comprising:
The radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting;
RRU determines radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal.
The method of a kind of signal processing that the embodiment of the present invention provides, comprising:
The radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting;
For the BBU of each standard being connected with RRU, RRU is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
A kind of radio frequency remote unit RRU provided by the invention, comprising:
The first modular converter, for converting the sampling rate value of the baseband signal from each baseband processing unit BBU receiving to the sampling rate value of setting;
The first processing module, for determining radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal.
A kind of radio frequency remote unit RRU provided by the invention, comprising:
The second modular converter, for converting the radiofrequency signal receiving to the baseband signal that sampling rate value is the sampling rate value of setting;
The second processing module, for the BBU for each standard being connected with RRU, is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
In embodiments of the present invention, the RRU being connected with the BBU of multiple types converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting, RRU determines radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal, and the radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting, for the BBU of each standard being connected with RRU, RRU is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU, due to the sampling rate value difference of baseband signal corresponding to different systems BBU, for descending process, RRU converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting, determine radiofrequency signal corresponding to baseband signal after conversion, go out by least one antenna transmission, for up process, RRU by from antenna reception to radiofrequency signal, converting sampling rate value to is the baseband signal of the sampling rate value of setting, for the BBU of each standard being connected with RRU, be the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and send to this BBU, thereby realize RRU and can process the baseband signal corresponding with the BBU of the multiple types self connecting, and then can adopt multiple types BBU and a RRU networking, the network having reduced setting up manage and the difficulty of unified planning.
Accompanying drawing explanation
Fig. 1 is the networking schematic diagram of single mode machine room and single mode RRU in background technology;
Fig. 2 is the networking schematic diagram of multimode machine room and single mode RRU in background technology;
Fig. 3 is the method flow schematic diagram that embodiment of the present invention RRU processes downstream signal;
Fig. 4 is embodiment of the present invention multi-modulation scheme BBU and RRU networking mode schematic diagram;
Fig. 5 is embodiment of the present invention RRU theory structure schematic diagram;
Fig. 6 is the method flow schematic diagram that embodiment of the present invention RRU processes upward signal;
Fig. 7 is the structural representation of embodiment of the present invention RRU;
Fig. 8 is the structural representation of embodiment of the present invention RRU.
Embodiment
The embodiment of the present invention, the RRU being connected with the BBU of multiple types converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting, RRU determines radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal, and the radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting, for the BBU of each standard being connected with RRU, RRU is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU, due to the sampling rate value difference of baseband signal corresponding to different systems BBU, for descending process, RRU converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting, determine radiofrequency signal corresponding to baseband signal after conversion, go out by least one antenna transmission, for up process, RRU by from antenna reception to radiofrequency signal, converting sampling rate value to is the baseband signal of the sampling rate value of setting, for the BBU of each standard being connected with RRU, be the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and send to this BBU, thereby realize RRU and can process the baseband signal corresponding with the BBU of the multiple types self connecting, and then can adopt multiple types BBU and a RRU networking, the network having reduced setting up manage and the difficulty of unified planning.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As shown in Figure 3, the method that embodiment of the present invention RRU processes downstream signal comprises the following steps:
Step 301, the RRU being connected with each BBU of multiple types convert the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting;
Step 302, RRU determine radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal.
Preferably, in step 301, RRU receives the baseband signal from BBU, comprising:
For a BBU, RRU receives the baseband signal from this BBU by light mouth corresponding to this BBU;
The corresponding light mouth of a kind of standard of one of them BBU, and a corresponding BBU of light mouth.
In enforcement, BBU can be the BBU of single system, can be also the BBU of multi-modulation scheme, will be introduced respectively below.
Situation one, BBU are the BBU of single system.
For the BBU of a single system, connect a cpri(common public radio interface of this BBU by an optical fiber) and a light mouth of RRU, realize the base band signal transmission of this BBU output is arrived to this RRU, now, the light mouth that optical fiber connects is the light mouth that this BBU is corresponding;
Wherein, a corresponding light mouth of BBU, and a corresponding BBU of light mouth.
When RRU is positive integer by N(N) bar optical fiber is when being connected with the BBU of N single system, and RRU is by the baseband signal corresponding to BBU of N single system of light mouth reception corresponding to the BBU of N single system.
Situation two, BBU are the BBU of multi-modulation scheme.
For the BBU of a multi-modulation scheme, if there is M kind standard in this BBU, for a kind of standard of this BBU, connect this kind of cpri(common public radio interface that standard is corresponding by an optical fiber) and a light mouth of RRU, realize base band signal transmission corresponding this kind of standard of this BBU output to this RRU, now, light mouth corresponding to this kind of standard that the light mouth that optical fiber connects is this BBU; That is, the BBU of a M kind standard is by baseband signal corresponding to this BBU M kind standard of M bar Optical Fiber Transmission, and RRU receives the baseband signal from this BBU by M light mouth corresponding to M kind standard.
As shown in Figure 4, BBU is the BBU of double-standard, support GSM(global system for mobile communications) standard and WCDMA (wide band code division multiple access) standard, optical fiber 1 is by base band signal transmission corresponding the GSM standard of cpri0 output to RRU, and RRU receives baseband signal corresponding to GSM standard by light mouth 1; Optical fiber 2 is by base band signal transmission corresponding the WCDMA standard of cpri1 output to RRU, and RRU receives baseband signal corresponding to WCDMA standard by light mouth 2.
Preferably, for the BBU of a multi-modulation scheme, the corresponding light mouth of a kind of standard of this BBU, can receive from a light mouth baseband signal corresponding to a kind of standard of this BBU, the baseband signal corresponding to multiple types that also can receive this BBU in different time sections from a light mouth.
Such as,, similarly, BBU is the BBU of double-standard, can, in very first time section, baseband signal corresponding GSM standard be transmitted by optical fiber 1, RRU receives baseband signal corresponding to this GSM standard by light mouth 1; Within the second time period, baseband signal corresponding WCDMA standard is transmitted by optical fiber 1, RRU receives baseband signal corresponding to this WCDMA standard by light mouth 1; Realize corresponding baseband signal and baseband signal corresponding to WCDMA standard of GSM standard that receives BBU from light mouth 1 in different time sections.
The corresponding light mouth of a kind of standard of one of them BBU, and a corresponding BBU of light mouth.
It should be noted that, above-mentioned is only for a BBU, RRU receives the introduction of carrying out from the performance of the baseband signal of BBU, for the situation that has multiple BBU, the performance of each BBU in multiple BBU and above-mentioned for a BBU, RRU receives from the performance of the baseband signal of BBU similar, does not repeat them here.
In enforcement, the sampling rate value difference of the baseband signal of the BBU transmission of different systems.
In enforcement, in step 301, RRU may receive a baseband signal or multiple baseband signal.
Wherein, the execution mode of single system machine room and multi-modulation scheme machine room (machine room support multiple types) is similar with execution mode single, multi-modulation scheme BBU, does not repeat them here.
Preferably, step 301, RRU also comprise before converting the sampling rate value of the baseband signal from BBU receiving the sampling rate value of setting to:
The clock frequency value that RRU is definite according to clock distributor, determines the sampling rate value of setting.
Wherein, the numerical values recited of the numerical values recited of the sampling rate value of the setting clock frequency value definite with clock distributor equates.
Preferably, in step 301, RRU converts the sampling rate value of the baseband signal from BBU receiving to by the mode of interpolation the sampling rate value of setting.In the time of signal downlink, RRU increases the sampling rate of baseband signal by the mode of interpolation, makes the sampling rate value of the baseband signal from BBU receiving be increased to the sampling rate value of setting.
In enforcement, other modes that the sampling rate value of baseband signal corresponding different systems BBU can be converted to the sampling rate value of setting are applicable to the present invention on an equal basis.
Preferably, in step 301, when RRU receives the different baseband signal of multiple sampling rate values in section at one time, baseband signals different each sampling rate value can be converted successively to the sampling rate value of setting, also can the sampling rate value of at least two baseband signals be converted to the sampling rate value of setting simultaneously.
Be introduced as example receiving in section at one time take RRU with the first baseband signal corresponding to the first standard BBU self connecting and the second baseband signal corresponding to the second standard BBU below, the execution mode of other situations and the execution mode of the embodiment of the present invention are similar, do not repeat them here.
As shown in Figure 5, the first processing unit comprises digital intermediate frequency module, frequency-variable module, power amplifier module and filtration module, FPGA(field programmable gate array) 1 and DAC(digital to analog converter) branch road of the serial connection such as 1 forms the first via the first processing unit, the branch road of the serial connection such as FPGA2 and DAC2 forms second tunnel the first processing unit, wherein, the first via the first processing unit is identical with the structure of second tunnel the first processing unit.
RRU receives the first baseband signal by light mouth 1, receives the second baseband signal by light mouth 2; RRU can adopt up-conversion DUC that FPGA1 is corresponding the sampling rate value of the first baseband signal to be converted to the sampling rate value of setting, adopt DUC corresponding to FPGA2 the sampling rate value of the second baseband signal to be converted to the sampling rate value of setting, realize the sampling rate value that simultaneously the sampling rate value of two baseband signals is converted to setting; Also can successively the sampling rate value of the first baseband signal and the second baseband signal be converted by DUC corresponding to FPGA1 to the sampling rate value of setting.
In enforcement, for the situation that successively baseband signals different each sampling rate value is converted to the sampling rate value of setting, be the situation of the baseband signal of the sampling rate value of setting for there is multi-channel sampling rate value, specifically whether synthetic this multichannel baseband signal can be set as required, such as, RRU can determine respectively radiofrequency signal corresponding to each roadbed band signal after conversion; Can, by after synthetic at least two-way baseband signal in all baseband signals after a conversion roadbed band signal, determine radiofrequency signal corresponding to this roadbed band signal, and radiofrequency signal corresponding to each roadbed band signal except this roadbed band signal; Also can be by the synthetic roadbed band signal between two of all baseband signals after conversion, determine radiofrequency signal that each baseband signal after synthetic is corresponding etc.
Wherein, if at least two-way baseband signal in multichannel baseband signal is synthesized a roadbed band signal, this at least two-way baseband signal at one time section in take simultaneously a certain road the first processing unit (in Fig. 5, this at least two-way baseband signal at one time section in take the first via the first processing unit or second tunnel the first processing unit simultaneously); If multichannel baseband signal is not synthesized processing, the each roadbed band signal in this multichannel baseband signal takies a certain road the first processing unit in different time sections.
Preferably, RRU is by synthetic all baseband signals after a conversion roadbed band signal; Step 302, RRU determine radiofrequency signal according to the baseband signal after conversion, comprising:
According to the baseband signal after synthetic, determine radiofrequency signal corresponding to baseband signal after synthesizing.
Preferably, RRU is by synthetic at least two-way baseband signal in all baseband signals after a conversion roadbed band signal, and step 302, RRU determine radiofrequency signal according to the baseband signal after conversion, comprising:
According to the baseband signal after synthetic, determine radiofrequency signal corresponding to baseband signal after synthesizing; And according to not synthetic baseband signal, determine radiofrequency signal corresponding to baseband signal after not synthesizing.
In enforcement, determine that for RRU the performance of other kind of mode and the performance of the embodiment of the present invention synthetic and/or not this synthetic multichannel baseband signal are similar, do not repeat them here.
To in section, receive first baseband signal corresponding with the first standard BBU self connecting and the second baseband signal corresponding to the second standard BBU at one time with RRU below, adopt the first baseband signal and the second baseband signal after DUC corresponding to FPGA1 changed, and the first baseband signal after changing and the not synthetic road signal of the second baseband signal are introduced into example, the execution mode of other situations and the execution mode of the embodiment of the present invention are similar, do not repeat them here.
As shown in Figure 5, RRU receives the first baseband signal by light mouth 1, receives the second baseband signal by light mouth 2; Adopt DUC corresponding to FPGA1 successively the sampling rate value of first and second baseband signal to be converted to the sampling rate value of setting.
Preferably, can receive the first baseband signal by light mouth 1 by the system module of FPGA1, receive the second baseband signal by light mouth 2.
Preferably, the clock frequency value that the system module of FPGA1 can be definite according to clock distributor, determines the sampling rate value of setting.
The conversion of the first baseband signal after the DUC realization conversion of FPGA1 from " answering " baseband signal to " reality " bandpass signal, by the first baseband signal after filtering, convert a higher sample rate to, thereby be modulated to NCO(digital controlled oscillator) the intermediate frequency carrier frequency sampling rate value of the first baseband signal (be about to convert the first sampling rate value to); The CFR(crest factor decay of FPGA1) realize in PA(power amplification) reduce before the PAR(peak-to-average force ratio of intermediate-freuqncy signal (being modulated to the first baseband signal of intermediate frequency carrier frequency)), guarantee the linearity of PA output, reduce out-of-band radiation, improve PA efficiency; The digital pre-distortion DPD of FPGA1 realizes intermediate-freuqncy signal is carried out to pre-distortion, proofreaies and correct the nonlinear characteristic of PA, promotes the delivery efficiency of PA; Intermediate-freuqncy signal through pre-distortion is input to DAC1;
Wherein, digital intermediate frequency module comprises FPGA1 and DAC1;
Frequency-variable module, for becoming radiofrequency signal by the intermediate-freuqncy signal of DAC1 output through mixing;
Preferably, as shown in Figure 5, frequency-variable module can comprise IQ Modulator(IQ modulator, intelligent regulator), for by after the intermediate-freuqncy signal intermediate frequency filtering of DAC1 output (being that intermediate-frequency filter IF Filter1 carries out intermediate frequency filtering to the intermediate-freuqncy signal of DAC1 output), carry out mixing with the signal of the first radio frequency phase locked source output; ATT(attenuator, attenuator), for controlling the gain of signal of mixing output.
Power amplifier module, for amplifying radiofrequency signal;
Filtration module, carries out filtering processing by the radiofrequency signal after amplifying;
Export this radiofrequency signal after treatment after filtering from antenna.
Wherein, the execution mode of the processing procedure of the first baseband signal after the processing procedure of the second baseband signal after conversion and conversion is similar, only, and the second baseband signal after different time sections is processed the first baseband signal after conversion and changed.
Preferably, radiofrequency signal corresponding the first baseband signal and radiofrequency signal corresponding to the second baseband signal can be gone out from same antenna transmission, also can go out from different antenna transmissions.
Preferably, for by the situation of the first baseband signal after conversion and the synthetic road signal of the second baseband signal, need to be after the DUC of FPGA1 converts the sampling rate value of the first baseband signal and the second baseband signal to first sampling rate value respectively, the first baseband signal after conversion and the second baseband signal are synthesized to a road signal, and the signal after merging is input to the CFR of FPGA1.
Preferably, as shown in Figure 6, a kind of method that upward signal is processed of the embodiment of the present invention, comprising:
Step 601, the RRU being connected with each BBU of multiple types convert the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting;
Step 602, for the BBU of each standard being connected with RRU, RRU is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
In enforcement, the method for the signal processing of Fig. 6 is the processing method of upward signal, corresponding with the method (processing method of downstream signal) of the signal processing of Fig. 6.
Preferably, the sampling rate value of the setting in step 301 is identical with the sampling rate of the setting in step 601 value.
Preferably, step 601, RRU also comprise before converting the radiofrequency signal receiving to the baseband signal of sampling rate value that sampling rate value is setting:
The clock frequency value that RRU is definite according to clock distributor, determines the sampling rate value of setting.
Wherein, the clock frequency value that RRU is definite according to clock distributor, determines in the performance of definite sampling rate value of setting and Fig. 3 that the performance of the sampling rate value of setting is similar, does not repeat them here.
Wherein, RRU is from least one antenna reception radiofrequency signal.
Below will be to be introduced to radiofrequency signal as example from an antenna reception, execution mode from multiple antenna receptions to radiofrequency signal and the execution mode of the embodiment of the present invention are similar, only for the situation from multiple antenna receptions to radiofrequency signal, can adopt at least one road the second processing unit, in the time that the way of the second processing unit is identical with antenna number, every road the second processing unit is processed respectively the radiofrequency signal that antenna reception arrives that this road second processing unit is corresponding, wherein, the structure of every road the second processing unit is identical, comprise LNA module, frequency-variable module and digital intermediate frequency module.
As shown in Figure 5, the radiofrequency signal that will receive from antenna port (TX1/RX1) after filtering after, be input to LNA module, filtered radiofrequency signal is amplified to processing, radiofrequency signal after amplifying is input to frequency-variable module, realize and convert the radiofrequency signal after this amplification to intermediate-freuqncy signal, intermediate-freuqncy signal is input to the ADC(analog to digital converter of digital intermediate frequency module), the intermediate-freuqncy signal that the down-conversion DDC of FPGA3 by digital intermediate frequency module will process through ADC be moved baseband signal, and the sample rates values of signal is the sampling rate value of setting.
In enforcement, can set as required the clock frequency value definite according to clock distributor by the system module of FPGA3, determine the sampling rate value of setting.
Wherein, LNA module comprises LNA, for filtered radiofrequency signal is amplified, and controls upstream noise).
Wherein, frequency-variable module comprises Mixer(frequency mixer) and AMP(amplifier, amplifier), Mixer, for the signal of the filtered radiofrequency signal of device Filter and the output of the second radio frequency phase locked source is after filtering carried out to mixing, obtain intermediate-freuqncy signal corresponding to this radiofrequency signal.
Preferably, as shown in Figure 5, the power module of RRU can adopt digiboard integrated technique, and the monitoring module of RRU is based on OMAP(Open Multimedia Application Platform, OMAP).
In enforcement, can realize and convert the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting by the mode extracting by DDC, and the sampling rate value of the baseband signal of the sampling rate value of setting be converted respectively to the sampling rate value corresponding to BBU of every kind of standard.
Preferably, can the baseband signal corresponding BBU of this standard be sent to this BBU by FPGA3.
Wherein, the baseband signal corresponding BBU of this standard is sent to this BBU by step 602, RRU, comprising:
RRU, from N light mouth, by N bar optical fiber, is transferred to the baseband signal of sampling rate the value corresponding BBU of N standard respectively the BBU of corresponding standard.
Wherein, in the time of the radiofrequency signal that adopts the road multiple antenna receptions of the second processing unit processes to arrive, process in different time sections the radiofrequency signal that each antenna reception arrives.
Based on same inventive concept, a kind of RRU is also provided in the embodiment of the present invention, because the principle that this equipment is dealt with problems is similar to the method for the embodiment of the present invention, therefore the enforcement of this equipment can be referring to the enforcement of method, repeats part and repeat no more.
Fig. 7 is embodiment of the present invention RRU structural representation, and as shown in the figure, embodiment of the present invention RRU comprises:
The first modular converter 701, for converting the sampling rate value of the baseband signal from each BBU receiving to the sampling rate value of setting;
The first processing module 702, for determining radiofrequency signal according to the baseband signal after conversion, and by least one antenna transmission radiofrequency signal.
Preferably, the first modular converter 701, also for for a BBU, the light mouth corresponding by this BBU receives the baseband signal from this BBU; The corresponding light mouth of a kind of standard of one of them BBU, and a corresponding BBU of light mouth.
Preferably, the first modular converter 701, also for the clock frequency value definite according to clock distributor, determines the sampling rate value of setting.
Preferably, receiving the baseband signal that multiple BBU are corresponding; The first modular converter 701, also for synthesizing a roadbed band signal by least two-way baseband signal of all baseband signals after conversion;
Accordingly, the first processing module 702, specifically for according to the baseband signal after synthetic, determines radiofrequency signal corresponding to baseband signal after synthesizing.
In enforcement, the first modular converter 701 and the first processing module 702 are equivalent to the first processing unit.
Fig. 8 is embodiment of the present invention RRU structural representation, and as shown in the figure, embodiment of the present invention RRU comprises:
The second modular converter 801, for converting the radiofrequency signal receiving to the baseband signal that sampling rate value is the sampling rate value of setting;
The second processing module 802, for the BBU for each standard being connected with RRU, is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
Preferably, the second modular converter 801, also for the clock frequency value definite according to clock distributor, determines the sampling rate value of setting.
In enforcement, the second modular converter 801 and the second processing module 802 are equivalent to the second processing unit.
In enforcement, can be by the module integration corresponding RRU of the module corresponding RRU of embodiment of the present invention Fig. 7 and Fig. 8 in same RRU.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (12)
1. a method for signal processing, is characterized in that, the method comprises:
The radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the sampling rate value of the baseband signal from BBU receiving to the sampling rate value of setting;
Described RRU determines radiofrequency signal according to the baseband signal after conversion, and by radiofrequency signal described at least one antenna transmission.
2. the method for claim 1, is characterized in that, described RRU receives multiple baseband signals;
Described RRU before determining radiofrequency signal, also comprises after converting the sampling rate value of the baseband signal from BBU receiving the sampling rate value of setting to:
Described RRU is by synthetic at least two-way baseband signal in all baseband signals after a conversion roadbed band signal;
Described RRU determines radiofrequency signal according to the baseband signal after conversion, comprising:
Described RRU, according to the baseband signal after synthetic, determines radiofrequency signal corresponding to baseband signal after synthesizing.
3. the method for claim 1, is characterized in that, described RRU also comprises before converting the sampling rate value of the baseband signal from BBU receiving the sampling rate value of setting to:
The clock frequency value that described RRU is definite according to clock distributor, determines the sampling rate value of described setting.
4. the method for claim 1, is characterized in that, RRU receives the baseband signal from BBU, comprising:
For a BBU, described RRU receives the baseband signal from this BBU by light mouth corresponding to this BBU;
The corresponding light mouth of a kind of standard of one of them BBU, and a corresponding BBU of light mouth.
5. a method for signal processing, is characterized in that, the method comprises:
The radio frequency remote unit RRU being connected with each baseband processing unit BBU of multiple types converts the radiofrequency signal receiving to baseband signal that sampling rate value is the sampling rate value of setting;
For the BBU of each standard being connected with described RRU, described RRU is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
6. method as claimed in claim 5, is characterized in that, described RRU also comprises before converting the radiofrequency signal receiving to the baseband signal of sampling rate value that sampling rate value is setting:
The clock frequency value that described RRU is definite according to clock distributor, determines the sampling rate value of described setting.
7. a radio frequency remote unit RRU, is characterized in that, this RRU comprises:
The first modular converter, for converting the sampling rate value of the baseband signal from each baseband processing unit BBU receiving to the sampling rate value of setting;
The first processing module, for determining radiofrequency signal according to the baseband signal after conversion, and by radiofrequency signal described at least one antenna transmission.
8. RRU as claimed in claim 7, is characterized in that, receives the baseband signal that multiple BBU are corresponding;
Described the first modular converter, also for synthesizing a roadbed band signal by least two-way baseband signal of all baseband signals after conversion;
Described the first processing module, specifically for according to the baseband signal after synthetic, determines radiofrequency signal corresponding to baseband signal after synthesizing.
9. RRU as claimed in claim 7, is characterized in that, described the first modular converter, also for the clock frequency value definite according to clock distributor, is determined the sampling rate value of described setting.
10. RRU as claimed in claim 7, is characterized in that, described the first modular converter, and also for for a BBU, the light mouth corresponding by this BBU receives the baseband signal from this BBU; The corresponding light mouth of a kind of standard of one of them BBU, and a corresponding BBU of light mouth.
11. 1 kinds of radio frequency remote unit RRU, is characterized in that, this RRU comprises:
The second modular converter, for converting the radiofrequency signal receiving to the baseband signal that sampling rate value is the sampling rate value of setting;
The second processing module, for the BBU for each standard being connected with described RRU, is the sampling rate value of the baseband signal that this BBU is corresponding by the sampling rate value transform of the baseband signal after conversion, and the baseband signal after conversion is sent to this BBU.
12. RRU as claimed in claim 11, is characterized in that, described the second modular converter, also for the clock frequency value definite according to clock distributor, is determined the sampling rate value of described setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004469.8A CN103916877B (en) | 2013-01-07 | 2013-01-07 | The method and Remote Radio Unit of a kind of signal transacting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004469.8A CN103916877B (en) | 2013-01-07 | 2013-01-07 | The method and Remote Radio Unit of a kind of signal transacting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103916877A true CN103916877A (en) | 2014-07-09 |
| CN103916877B CN103916877B (en) | 2017-12-26 |
Family
ID=51042191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310004469.8A Expired - Fee Related CN103916877B (en) | 2013-01-07 | 2013-01-07 | The method and Remote Radio Unit of a kind of signal transacting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103916877B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153049A1 (en) * | 2018-02-08 | 2019-08-15 | Bae Systems Australia Limited | Multichannel software defined radio receiver with optically isolated adc |
| CN112702135A (en) * | 2020-12-24 | 2021-04-23 | 京信网络***股份有限公司 | Signal processing method, device, system, medium and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1755230A2 (en) * | 2005-08-17 | 2007-02-21 | Samsung Electronics Co., Ltd. | Multi-mode/multi-band wireless transceiver |
| CN101790256A (en) * | 2009-01-22 | 2010-07-28 | 中兴通讯股份有限公司 | Signal receiving machine, signal sending machine and signal processing method |
| CN101965070A (en) * | 2009-07-23 | 2011-02-02 | 中兴通讯股份有限公司 | Multimode base station, radio frequency unit and realizing method thereof |
-
2013
- 2013-01-07 CN CN201310004469.8A patent/CN103916877B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1755230A2 (en) * | 2005-08-17 | 2007-02-21 | Samsung Electronics Co., Ltd. | Multi-mode/multi-band wireless transceiver |
| CN101790256A (en) * | 2009-01-22 | 2010-07-28 | 中兴通讯股份有限公司 | Signal receiving machine, signal sending machine and signal processing method |
| CN101965070A (en) * | 2009-07-23 | 2011-02-02 | 中兴通讯股份有限公司 | Multimode base station, radio frequency unit and realizing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153049A1 (en) * | 2018-02-08 | 2019-08-15 | Bae Systems Australia Limited | Multichannel software defined radio receiver with optically isolated adc |
| GB2585305A (en) * | 2018-02-08 | 2021-01-06 | Bae Systems Australia Ltd | Multichannel software defined radio receiver with optically isolated ADC |
| US11438066B2 (en) | 2018-02-08 | 2022-09-06 | Bae Systems Australia Limited | Multichannel software defined radio receiver with optically isolated ADC |
| GB2585305B (en) * | 2018-02-08 | 2022-10-12 | Bae Systems Australia Ltd | Multichannel software defined radio receiver with optically isolated ADC |
| CN112702135A (en) * | 2020-12-24 | 2021-04-23 | 京信网络***股份有限公司 | Signal processing method, device, system, medium and electronic equipment |
| CN112702135B (en) * | 2020-12-24 | 2023-09-29 | 京信网络***股份有限公司 | Signal processing method, device, system, medium and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103916877B (en) | 2017-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102082752B (en) | Digital predistortion processing method and equipment | |
| US9769597B2 (en) | Dual-mode radio frequency transceiver architecture | |
| CN109845118B (en) | Tower top equipment and passive intermodulation elimination method | |
| EP2953283B1 (en) | Method, apparatus, and radio remote unit for transmitting wireless base band data | |
| CN201742417U (en) | Multi-mode digital optical fiber repeater as well as near-end machine, far-end machine and coverage system thereof | |
| CN103384155A (en) | Automatic matching method for radio frequency channels of multichannel distributed antenna system | |
| CN101369881B (en) | Multi-carrier digital frequency-selection system and its signal processing method | |
| US20180191387A1 (en) | Signal Processing Arrangement for a Transmitter | |
| CN101335730A (en) | Single channel digital frequency selection system with input and output on same frequency and implementing method thereof | |
| CN101742528A (en) | System for realizing indoor coverage in CDMA network | |
| CN113055040B (en) | Radio remote unit and communication system | |
| CN206323369U (en) | A kind of new multi-standard full frequency band radio-frequency signal generator | |
| CN103916877A (en) | Signal processing method and radio remote unit (RRU) | |
| CN105119628A (en) | Frequency-selecting device of ARC digital intercom system | |
| CN103647560A (en) | Dynamically reconfigurable direct digital synthesis jammer and dynamic configuration method | |
| CN101146074A (en) | Processing method for radio access system on downlink signals based on optical fiber radio | |
| CN100574301C (en) | A kind of multicarrier system realizes the method for auto-scaling | |
| CN102333389A (en) | Three-mode digital optical fiber remote system | |
| CN106550371A (en) | A kind of multiple source cut-in method and system | |
| CN201307861Y (en) | Multi-carrier digital frequency selective system | |
| CN105208686B (en) | It polymerize multi-carrier-wave wireless wide band radio-frequency processing unit based on the discrete frequency point of 230MHz | |
| CN102055407B (en) | Digital up converter and digital down converter of long term evolution (LTE) radiofrequency remote end unit and flexible bandwidth configuration method | |
| KR20130085521A (en) | Basestation apparatus for mobile communication and method thereof | |
| CN201256398Y (en) | Multi-mode radio frequency signal generator | |
| CN204967810U (en) | Frequency selective device of ARC digit intercom system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 No. 10 Shenzhou Road, Guangzhou Science City, Guangdong Province Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 No. 10 Shenzhou Road, Guangzhou Science City, Guangdong Province Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 |