CN103533677A - Method and device for processing uplink signal of base station - Google Patents
Method and device for processing uplink signal of base station Download PDFInfo
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- CN103533677A CN103533677A CN201310464385.2A CN201310464385A CN103533677A CN 103533677 A CN103533677 A CN 103533677A CN 201310464385 A CN201310464385 A CN 201310464385A CN 103533677 A CN103533677 A CN 103533677A
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Abstract
The invention provides a method and a device for processing an uplink signal of a base station. The method comprises the following steps: receiving an uplink radiofrequency signal transmitted by a client; downwardly converting the received uplink radiofrequency signal into an analogue intermediate frequency signal; modulating the analogue intermediate frequency signal formed by down conversion into a digital signal, performing time delay adjustment on the digital signal, and reducing into an analogue intermediate frequency signal; upwardly converting the reduced analogue intermediate frequency signal into an uplink radiofrequency signal; outputting the reduced uplink radiofrequency signal to a base station receiver. The problem of high uplink communication error rate caused by the limitation of a multi-path uplink search window on the signal of a base station receiving mobile stage and surpassing of the range of a multi-path receiving window by uplink receiving is solved. Radiofrequency zooming-out equipment such as GRRU (GSM Digital Remote RF Units)/CRRU (CDMA Digital Remote RF Units)/WRRU (WCDMA Digital Remote RF Units) and the like can be applied freely in various scenes; meanwhile, the coverage area of the base station can be controlled accurately.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the method and apparatus that base station upward signal is processed.
Background technology
Mobile communications network can be divided into three parts substantially: travelling carriage, wireless access network and core net.Wherein, wireless access network comprises radio network controller and base station.Base station signal is shot out signal amplitude by antenna-feedback system, coverage goal region.But the unavoidable chlamydate weak district of base station coverage mode, blind area, this mobile communication base station of day by day improving for quality of service requirement is a general difficult problem.GRRU/CRRU/WRRU radio frequency stretch system (GRRU:GSM Digital Remote RF Units; CRRU:CDMA Digital Remote RF Units; WRRU:WCDMA Digital Remote RFUnits) and other radio frequency stretch systems introduce base station signals, amplified coverage goal region.Radio frequency stretch system can expand base station range, eliminates coverage hole, solves the covering problem of indoor or special screne.
Yet, existing GRRU/CRRU/WRRU and other radio frequency stretch systems are because time delay is larger, add radiofrequency signal in Optical Fiber Transmission time delay much larger than aerial propagation delay time, the multidiameter delay poor multipath reception window that tend to be greater than mobile communication system of travelling carriage when radio frequency stretch system and the overlapping area of coverage in information source community, thereby as shown in Figure 1, at this moment in the time of can causing travelling carriage to be conversed in the overlapping area of coverage of base station and GRRU/CRRU/WRRU remote termination, transmitting power raises, travelling carriage itself not only can call drop, and at the bottom of can lifting base station, make an uproar and affect it and normally cover, thereby limited the application of the digital RF far-drawing systems such as GRRU/CRRU/WRRU.
For this problem, conventional method is that information source is only done in base station, and signal own does not cover, and all adopts GRRU/CRRU/WRRU remote termination to cover.Cause the waste of base station signal power, not only increased construction cost, and not energy-conserving and environment-protective, and make GRRU/CRRU/WRRU when coupling macro station signal covers, be subject to larger restriction.
Summary of the invention
Based on this, be necessary to exceed for uplink receiving the high problem of the uplink communication error rate that base station multipath reception window scope causes the method and apparatus that provides a kind of base station upward signal to process.It can solve the restriction of mobile communication system multipath reception window, and the radio frequency remote equipments such as GRRU/CRRU/WRRU can freely be applied in various scenes; Also can be used for accurately controlling the coverage of base station.
The method that base station upward signal is processed, comprises step:
Receive the up radiofrequency signal that user side sends;
The up radiofrequency signal receiving is downconverted to analog if signal;
The analog if signal that described down-conversion is formed is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment;
Analog if signal after reduction is carried out to up-conversion makes it be reduced to up radiofrequency signal;
Up radiofrequency signal after output reduction is to base station receiver.
A upward signal processing unit, comprising:
MT end duplexer/MT holds circulator, the up radiofrequency signal sending for receiving user side;
Down conversion module, for downconverting to analog if signal to the up radiofrequency signal receiving;
Uplink baseband processing unit, is modulated into digital signal for the analog if signal that described down-conversion is formed, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment;
Up-converter module, carries out up-conversion for the analog if signal to after reduction and makes it be reduced to up radiofrequency signal;
DT end duplexer/DT holds circulator, for the up radiofrequency signal of exporting after reduction, arrives base station receiver.
According to the scheme of the invention described above, it is by receiving after up radiofrequency signal, the up radiofrequency signal receiving is downconverted to analog if signal, the analog if signal more described down-conversion being formed is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment, then the analog if signal after reduction being carried out to up-conversion makes it be reduced to up radiofrequency signal, up radiofrequency signal after output reduction is to base station receiver, due to after antenna for base station or other receiving systems receive up radiofrequency signal, before being input to base station receiver, up radiofrequency signal has been carried out to time delay adjustment, thereby, eliminated the restriction of line search window to base station receiving mobile signal on multipath, avoided uplink receiving to exceed the high problem of the uplink communication error rate that multipath reception window scope causes, simultaneously, because being is first modulated to digital signal by up radiofrequency signal, again digital signal is carried out to time delay adjustment, adopt in this way, can adjust arbitrarily its time delay, and it is high to adjust precision, therefore, also can realize the coverage of accurate control base station.
Accompanying drawing explanation
Fig. 1 is mobile communication base station multipath reception window restriction schematic diagram;
Fig. 2 is the schematic flow sheet of the embodiment of the method one of base station of the present invention upward signal processing;
Fig. 3 is the schematic flow sheet of the embodiment of the method two of base station of the present invention upward signal processing;
Fig. 4 is for FDD system, the structural representation of base station upward signal processing unit embodiment mono-of the present invention;
Fig. 5 is for TDD system, the structural representation of base station upward signal processing unit embodiment mono-of the present invention;
Fig. 6 is the application schematic diagram of base station upward signal processing unit embodiment mono-of the present invention;
Fig. 7 is for FDD system, the structural representation of base station upward signal processing unit embodiment bis-of the present invention;
Fig. 8 is the application schematic diagram of base station upward signal processing unit embodiment bis-of the present invention;
Fig. 9 is the structural representation (FDD system) of remote radio coupling unit of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated, but implementation of the present invention is not limited to this.
Shown in Figure 2, the schematic flow sheet of the embodiment of the method one of processing for base station of the present invention upward signal.As shown in Figure 2, the method that the base station upward signal in this embodiment is processed comprises the steps:
Step S201: receive the up radiofrequency signal that user side sends; Wherein, can receive the up radiofrequency signal that user side sends by antenna for base station, also can receive the up radiofrequency signal that user side sends by receiving system.
Step S202: the up radiofrequency signal receiving is downconverted to analog if signal;
Step S203: the analog if signal that down-conversion is formed is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment;
Wherein, the mode of digital signal being carried out to time delay adjustment can adopt existing mode, do not repeat them here, simultaneously, digital signal is carried out to time delay adjustment, adjustment precision is high, as adopted SDR(Software Defining Radio) signal processing technology can be the time delay adjustment that hundreds of microsecond, stepping are nanosecond to the up radiofrequency signal amplitude of carrying out.The time delay time can be set in advance by user.
Step S204: the analog if signal after reduction is carried out to up-conversion and make it be reduced to up radiofrequency signal;
Step S205: the up radiofrequency signal after output reduction is to base station receiver.
Accordingly, according to the scheme in the present embodiment, it is after receiving up radiofrequency signal, the up radiofrequency signal receiving is downconverted to analog if signal, the analog if signal again down-conversion being formed is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment, then the analog if signal after reduction being carried out to up-conversion makes it be reduced to up radiofrequency signal, up radiofrequency signal after output reduction is to base station receiver, because the up radiofrequency signal receiving at antenna for base station is input to before base station receiver, up radiofrequency signal has been carried out to time delay adjustment, thereby, eliminated the restriction of multipath search window to base station receiving mobile signal, avoided uplink receiving to exceed the high problem of the uplink communication error rate that multipath reception window scope causes, simultaneously, because being is first modulated to digital signal by up radiofrequency signal, again digital signal is carried out to time delay adjustment, adopt in this way, can adjust arbitrarily its time delay, and it is high to adjust precision, therefore, also can realize the coverage of accurate control base station.
In an embodiment, the time delay time can also obtain by the form of obtaining therein.Such as obtaining the time delay time of the remote termination of the overlapping area of coverage, then adjust.Before step S203, also comprise step: the time delay of obtaining the default remote termination of radio frequency stretch system.Step S203 can be: the analog if signal that down-conversion is formed is modulated into digital signal, according to time delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal.Wherein, the time delay of default remote termination can be set as the time delay of overlapping covered remote termination, also can be set as the time delay apart from base station remote termination farthest, or the time delay of the remote termination that in remote termination, time delay is the longest.
In an embodiment, can realize base station uplink receiving and all remote termination uplink receiving Delay Synchronizations therein.Before obtaining the time delay step of default remote termination of radio frequency stretch system, also comprise the time delay of obtaining each remote termination of radio frequency stretch system, the remote termination of time delay maximum is made as default remote termination; After obtaining the time delay step of default remote termination of radio frequency stretch system, also comprise step: to each remote termination transmission delay of radio frequency stretch system.Specifically shown in Figure 3, the schematic flow sheet of the embodiment of the method two of processing for base station of the present invention upward signal.As shown in Figure 3, the method that the base station upward signal in this embodiment is processed comprises the steps:
Step S301: receive the up radiofrequency signal that user side sends;
Step S302: the up radiofrequency signal receiving is downconverted to analog if signal;
Step S303: obtain the time delay of each remote termination of radio frequency stretch system, determine maximum delay, to each remote termination forward delay interval maximum delay instruction of radio frequency stretch system.
Step S304: the analog if signal that down-conversion is formed is modulated into digital signal, according to maximum delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal;
Wherein, the mode of digital signal being carried out to time delay adjustment can adopt existing mode, do not repeat them here, simultaneously, digital signal is carried out to time delay adjustment, adjustment precision is high, as adopted SDR(Software DefiningRadio) signal processing technology can be the time delay adjustment that hundreds of microsecond, stepping are nanosecond to the up radiofrequency signal amplitude of carrying out.The time delay time can be set in advance by user.
Step S305: the analog if signal after reduction is carried out to up-conversion and make it be reduced to up radiofrequency signal;
Step S306: the up radiofrequency signal after output reduction is to base station receiver.
Wherein, each remote termination of radio frequency stretch system zooms out for received RF the time delay maximum delay instruction that coupling unit sends, and carries out the time delay adjustment of synchronizeing with base station time delay according to instruction.Obtain the time delay of each remote termination of radio frequency stretch system, selecting time delay is the longest time delay, to other remote terminations of radio frequency stretch system, send this long delay and adjust instruction, other remote terminations of radio frequency stretch system also carry out time delay adjustment according to this long delay, thereby make base station uplink receiving and all remote termination uplink receiving Delay Synchronizations.
Accordingly, according to the scheme in the present embodiment, it downconverts to analog if signal to the up radiofrequency signal receiving after receiving up radiofrequency signal, obtain the time delay of the default remote termination of radio frequency stretch system, to each remote termination transmission delay of radio frequency stretch system, the analog if signal again down-conversion being formed is modulated into digital signal, according to time delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal, then the analog if signal after reduction being carried out to up-conversion makes it be reduced to up radiofrequency signal, up radiofrequency signal after output reduction is to base station receiver, due to after the up radiofrequency signal of receiving, be input to before base station receiver, up radiofrequency signal has been carried out and the time delay adjustment of radio frequency stretch system remote termination Delay Synchronization farthest, thereby, eliminated the restriction of line search window to base station receiving mobile signal on multipath, avoided uplink receiving to exceed the high problem of the uplink communication error rate that multipath reception window scope causes, simultaneously, because being is first modulated to digital signal by up radiofrequency signal, again digital signal is carried out to time delay adjustment, adopt in this way, can adjust its time delay identical with the time delay of radio frequency stretch system distal-most end, also according to the time delay of radio frequency stretch system distal-most end, adjust the remote termination of other radio frequency stretch systems simultaneously, thereby make base station uplink receiving and all remote termination uplink receiving Delay Synchronizations.
Wherein, in order to eliminate interference signal, to increase up radio-frequency (RF) signal strength, between step S201/S301 and step S202/S302, can also comprise step: the up radiofrequency signal receiving is carried out to filtering, amplification; Between step S204/S305 and step S205/S306, can also comprise step: the up radiofrequency signal after reduction is amplified.Certainly these newly-increased two steps can exist simultaneously, also can only have one of them, specifically set as required.
In addition, active module embedded therein produces fault and generally can exert an influence to base station, and above-mentioned downconversion process, the transfer process of analog if signal and digital signal, time delay adjustment process and up-conversion process etc. are when specific implementation, generally all need to be by active module embedded therein, therefore, impact for fear of active module embedded therein fault on base station, can also comprise step: detection down-conversion process, the transfer process of analog if signal and digital signal, time delay adjustment process, or whether up-conversion process goes wrong, if, directly the up radiofrequency signal receiving is input to base station receiver.In other words, when any one process of transfer process, time delay adjustment process or the up-conversion process etc. of above-mentioned downconversion process, analog if signal and digital signal goes wrong, the up radiofrequency signal directly antenna for base station being received is input to base station receiver, being about to time delay adjustment link bypasses, the impact of having avoided active module embedded therein fault to produce base station, has also increased the flexibility of the remote radio engineering application such as GRRU/CRRU/WRRU.
In addition, the method that the base station upward signal in above-described embodiment is processed can be for the radio communication base station of the standards such as GSM, CDMA, WCDMA, CDMA2000, Wimax, TD-SCDMA or LTE.
The method of processing according to the base station upward signal of the invention described above, the present invention also provides a kind of base station upward signal processing unit.Base station of the present invention upward signal processing unit both can be applied to FDD(TimeDivision Duplexing, time division duplex) system, also can be applied to TDD(Frequency DivisionDuplexing, Frequency Division Duplexing (FDD)) system, the main distinction is, what in FDD system, adopt is MT end duplexer and DT end duplexer, and what in TDD system, adopt is MT end circulator and DT end circulator.Take respectively FDD system, TDD system below describes as example.
Fig. 4 shows the system for FDD, the structural representation of base station upward signal processing unit embodiment mono-of the present invention, and Fig. 5 shows the system for TDD, the structural representation of base station upward signal processing unit embodiment mono-of the present invention.Fig. 4 Fig. 5 is the structural representation of the preferable examples of base station of the present invention upward signal processing unit.According to different Consideration, when the upward signal processing unit of specific implementation base station of the present invention, can comprise whole shown in Fig. 4/Fig. 5, also can only comprise wherein a part of shown in Fig. 4/Fig. 5.
As shown in Figure 4, in an embodiment, can comprise that MT end duplexer 401, down conversion module 402, uplink baseband processing unit 403, up-converter module 404, DT hold duplexer 405, wherein therein
MT holds duplexer 401, the up radiofrequency signal sending for receiving user side;
Uplink baseband processing unit 403, is modulated into digital signal for the analog if signal that down-conversion is formed, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment; Wherein, when specific implementation, uplink baseband processing unit 403 may further include successively the A/D converter that connects, digital filter, D/A converter etc., the mode of digital signal being carried out to time delay adjustment can adopt existing mode, do not repeat them here, simultaneously, digital signal is carried out to time delay adjustment, adjustment precision is high, as adopted SDR(Software Defining Radio) signal processing technology can be the time delay adjustment that hundreds of microsecond, stepping are nanosecond to the up radiofrequency signal amplitude of carrying out;
Up-converter module 404, carries out up-conversion for the analog if signal to after reduction and makes it be reduced to up radiofrequency signal;
DT holds duplexer 405, for the up radiofrequency signal of exporting after reduction, arrives base station receiver.
As shown in Figure 5, therein in an embodiment, can comprise that MT end circulator 501, down conversion module 502, uplink baseband processing unit 503, up-converter module 504, DT hold circulator 505, wherein, the function of down conversion module 502, uplink baseband processing unit 503, up-converter module 504 is identical with the function correspondence of down conversion module 402, uplink baseband processing unit 403, up-converter module 404, do not repeat them here, below only MT end circulator 501, DT end circulator 505 are described, wherein:
MT holds circulator 501, the up radiofrequency signal sending for receiving user side;
DT holds circulator 505, for the up radiofrequency signal of exporting after reduction, arrives base station receiver.
For convenience of explanation, only set forth in the foregoing description the up link of base station upward signal processing unit, but do not represented that base station of the present invention upward signal processing unit necessarily only has up link.Such as, the present invention can comprise up link and down link, up link and down link comprise shared MT end duplexer/circulator and DT end duplexer/circulator, and up link also comprises that being connected to MT in turn holds down conversion module, uplink baseband processing unit, up-converter module between duplexer/circulator and DT end duplexer/circulator.For convenience of explanation, the present invention only illustrates uplink portion.
When specific works, after apparatus of the present invention come into operation, MT end duplexer/MT end circulator receives by antenna for base station (cover antenna or reception antenna) the up radiofrequency signal that travelling carriage sends from space, the travelling carriage here generally refers to the equipment that in mobile radio communication, mobile subscriber uses, can be divided into vehicle-mounted type, pocket and handheld, for example mobile phone is handheld, up radiofrequency signal is sent to down conversion module through the uplink receiving port of MT end duplexer/MT end circulator, up radiofrequency signal is downconverted to analog if signal, then this analog if signal is input to uplink baseband processing unit, the analog if signal that uplink baseband processing unit forms down-conversion is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment, because uplink baseband processing unit can be modulated to digital signal by up radiofrequency signal, therefore, can in uplink baseband processing unit, increase instruction adjusts arbitrarily digital signal time delay, adopt up radiofrequency signal that this adjustment travelling carriage sends to arrive the mode of the time delay of base station, can eliminate the restriction of line search window to base station receiving mobile signal on multipath, the uplink error rate of having avoided uplink receiving to exceed multipath reception window scope and having caused is high, and solving multipath disturbs the problem that causes whole community a series of KPI index variation, follow, up-converter module carries out up-conversion to the analog if signal after reducing makes it be reduced to up radiofrequency signal again, and the up radiofrequency signal after reduction holds duplexer to output to base station receiver by MT.
In addition, base station of the present invention upward signal processing unit can be preferably and the radio frequency stretch system fit applications such as GRRU/CRRU/WRRU, there is good application prospect, this is to consider, restriction due to base stations in mobile communication system multipath search window, the radio frequency stretch systems such as the GRRU/CRRU/WRRU community in the same way that can not be coupled covers, and adopt community dorsad can bring pilot pollution and the excessive problem of soft handover area, limited greatly the application of the radio frequency stretch systems such as GRRU/CRRU/WRRU, and after use apparatus of the present invention, the radio frequency stretch systems such as GRRU/CRRU/WRRU can be eliminated the restriction of community dorsad that can only be coupled, expanded greatly its scope of application, simultaneously, consider, sometimes need accurately to control the coverage of base station, but because the precision of the adjustment of base station itself is thicker, cannot accomplish small adjustment, and base station of the present invention upward signal processing unit can be the time delay adjustment that hundreds of microsecond, stepping are nanosecond to the up radiofrequency signal amplitude of carrying out, realized the accurate control to up radiofrequency signal time delay, therefore, also can realize the small adjustment of time delay by base station of the present invention upward signal processing unit, thereby accurately control the coverage of base station.
In actual applications, base station of the present invention upward signal processing unit can be connected between antenna for base station and base station receiver.Shown in Figure 6, be the application schematic diagram of base station upward signal processing unit embodiment mono-of the present invention, it is connected between antenna for base station (cover antenna/reception antenna) and base station receiver, can be used in conjunction with digital RF far-drawing system.
In an embodiment, the time delay time can also obtain by the form of obtaining therein.Such as obtain the overlapping area of coverage remote termination the time delay time or apart from base station remote termination farthest, then adjust.Also comprise remote radio coupling unit, for obtaining the time delay of the default remote termination of radio frequency stretch system.Uplink baseband processing unit, is modulated into digital signal for the analog if signal that down-conversion is formed, and according to time delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal.Now, base station of the present invention upward signal processing unit can be used as an integral body and is connected with base station with radio frequency stretch system, also can combine together with the near-end machine of radio frequency stretch system, in same controller, control, be convenient to obtain the time delay of the default remote termination of radio frequency stretch system.
In an embodiment, can realize base station uplink receiving and all remote termination uplink receiving Delay Synchronizations therein.Also comprise remote radio coupling unit, for obtaining the time delay of the default remote termination of radio frequency stretch system, to each remote termination forward delay interval instruction of radio frequency stretch system, delay time is described time delay, to up baseband processing unit transmission delay.Wherein, default remote termination is made as the remote termination of time delay maximum in remote termination.
Uplink baseband processing unit, is modulated into digital signal for the analog if signal that down-conversion is formed, and according to time delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal.
Each remote termination reception delay time delay instruction, carries out time delay adjustment according to time delay.
Now, base station of the present invention upward signal processing unit can be used as an integral body and is connected with base station with radio frequency stretch system, also can combine together with the near-end machine of radio frequency stretch system, in same controller, control, be convenient to obtain the time delay that remote radio is the remote termination of distal-most end.
Fig. 7 shows the system for FDD, the structural representation of base station upward signal processing unit embodiment bis-of the present invention.TDD system and FDD system class seemingly, do not repeat them here.
As shown in Figure 7, in an embodiment, can comprise that MT end duplexer 701, down conversion module 702, remote radio coupling unit 703, uplink baseband processing unit 704, up-converter module 705, DT hold duplexer 706 therein, wherein:
MT holds duplexer 701, the up radiofrequency signal sending for receiving user side;
Down conversion module 702, for downconverting to analog if signal to the up radiofrequency signal receiving;
Remote radio coupling unit 703, for obtaining the time delay of each remote termination of radio frequency stretch system, determine maximum delay, to each remote termination forward delay interval instruction of radio frequency stretch system, delay time is above-mentioned maximum delay, to up baseband processing unit, sends maximum delay;
Uplink baseband processing unit 704, is modulated into digital signal for the analog if signal that down-conversion is formed, and according to maximum delay, digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal;
Up-converter module 705, carries out up-conversion for the analog if signal to after reduction and makes it be reduced to up radiofrequency signal;
DT holds duplexer 706, for the up radiofrequency signal of exporting after reduction, arrives base station receiver.
Each remote termination of radio frequency stretch system zooms out for received RF the time-delay command that coupling unit sends, and carries out the time delay adjustment of synchronizeing with base station time delay according to time delay.Obtain the time delay of each remote termination of radio frequency stretch system, selecting time delay is maximum time delay, to other remote terminations of radio frequency stretch system, send this maximum delay, other remote terminations of radio frequency stretch system also carry out time delay adjustment according to this maximum delay, thereby make base station uplink receiving and all remote termination uplink receiving Delay Synchronizations.
In actual applications, base station of the present invention upward signal processing unit can be connected between antenna for base station and base station receiver, is arranged at radio frequency stretch system near-end.Shown in Figure 8, be upward signal processing unit embodiment bis-application schematic diagrames in base station of the present invention, it is connected between antenna for base station (cover antenna/reception antenna) and base station receiver, controls in same controller with digital RF far-drawing system near-end machine.
Therein in an embodiment, in order to eliminate interference signal, to increase up radio-frequency (RF) signal strength, as shown in Figure 4, the present invention can also comprise the low noise amplifier 406 being connected between MT end duplexer 401 and down conversion module 402, or/and be connected to the upstream amplifier 407 between up-converter module 404 and DT end duplexer 405; As shown in Figure 5, the present invention can also comprise the low noise amplifier 506 being connected between MT end circulator 501 and down conversion module 502, or/and be connected to the upstream amplifier 507 between up-converter module 504 and DT end circulator 505, wherein:
Impact for fear of active module embedded therein fault on base station, therein in an embodiment, also comprise bypass module, bypass module comprises detecting unit and by-pass switch, wherein: whether detecting unit breaks down for detection of down conversion module, uplink baseband processing unit or up-converter module, if so, conducting by-pass switch.
Therein in an embodiment, as shown in Figure 4, the present invention can also comprise bypass module 408, bypass module 408 comprises detecting unit 4081 and by-pass switch 4082, as shown in Figure 5, the present invention can also comprise bypass module 508, and bypass module 508 comprises detecting unit 5081 and by-pass switch 5082, wherein:
Whether detecting unit 4081/5081 breaks down for detection of low noise amplifier 406/506, down conversion module 402/502, uplink baseband processing unit 403/503, up-converter module 404/504 or upstream amplifier 407/507, conducting by-pass switch 4082/5082 when random devices wherein breaks down, wherein, detecting unit 4081/5081 and by-pass switch 4082/5082 can adopt existing device to realize, and do not repeat them here.Meanwhile, the embodiment of the present invention two also can comprise low noise amplifier, upstream amplifier, bypass module, concrete and embodiment mono-is similar, does not repeat them here.
In specific embodiment, as Fig. 9, be the structural representation of remote radio coupling unit of the present invention, the present invention and digital RF far-drawing system near-end machine are controlled by same control chip.Wherein, remote radio coupling unit 703 comprises coupler 7031 and radio frequency stretch system near-end machine 7032.Radio frequency stretch system near-end machine 7032 comprises up link and down link, up link and down link comprise shared MT end duplexer/circulator 70322, DT end duplexer/circulator 70324 and transmission unit 70321, up link also comprises the up RF processing unit 70323 being connected between MT end duplexer/circulator 70322 and DT end duplexer/circulator 70324, down link also comprises the downlink radio frequency processing unit 70325 being connected between MT end duplexer/circulator 70322 and DT end duplexer/circulator 70324, MT end duplexer/circulator is connected with transmission unit, DT end duplexer/circulator is connected with coupler, DT end duplexer/circulator is connected with base station by coupler.
The invention described above device can utilize special-purpose asic chip to realize, and also can utilize the programmable logic devices such as DSP, FPGA, EPLD to realize.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (12)
1. the method that base station upward signal is processed, is characterized in that, comprises step:
Receive the up radiofrequency signal that user side sends;
The up radiofrequency signal receiving is downconverted to analog if signal;
The analog if signal that described down-conversion is formed is modulated into digital signal, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment;
Analog if signal after reduction is carried out to up-conversion makes it be reduced to up radiofrequency signal;
Up radiofrequency signal after output reduction is to base station receiver.
2. the method that base station according to claim 1 upward signal is processed, it is characterized in that, the described analog if signal that described down-conversion is formed is modulated into digital signal, and be reduced to analog if signal step after this digital signal is carried out to time delay adjustment before, also comprises step:
Obtain the time delay of the default remote termination of radio frequency stretch system;
The described analog if signal that described down-conversion is formed is modulated into digital signal, and is reduced to analog if signal step after this digital signal is carried out to time delay adjustment, comprises step:
The analog if signal that described down-conversion is formed is modulated into digital signal, according to described time delay, described digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal.
3. the method that base station according to claim 2 upward signal is processed, it is characterized in that, before the time delay step of the described default remote termination that obtains radio frequency stretch system, also comprise the time delay of obtaining each remote termination of radio frequency stretch system, and the remote termination of time delay maximum is made as to default remote termination;
After the time delay step of the described default remote termination that obtains radio frequency stretch system, also comprise step: to the instruction of time delay described in each remote termination forward delay interval of radio frequency stretch system.
4. the method for processing according to the base station upward signal described in claims 1 to 3 any one, is characterized in that, also comprises step:
Before described down-conversion, the up radiofrequency signal receiving is carried out to filtering, amplification;
And/or
Up radiofrequency signal after reduction is amplified.
5. the method for processing according to the base station upward signal described in claims 1 to 3 any one, is characterized in that, also comprises step:
Whether the transfer process, time delay adjustment process or the up-conversion process that detect described downconversion process, analog if signal and digital signal go wrong, and if so, directly the up radiofrequency signal receiving are input to base station receiver.
6. a base station upward signal processing unit, is characterized in that, comprising:
MT end duplexer/MT holds circulator, the up radiofrequency signal sending for receiving user side;
Down conversion module, for downconverting to analog if signal to the up radiofrequency signal receiving;
Uplink baseband processing unit, is modulated into digital signal for the analog if signal that described down-conversion is formed, and this digital signal is being carried out being reduced to analog if signal after time delay adjustment;
Up-converter module, carries out up-conversion for the analog if signal to after reduction and makes it be reduced to up radiofrequency signal;
DT end duplexer/DT holds circulator, for the up radiofrequency signal of exporting after reduction, arrives base station receiver.
7. base station according to claim 6 upward signal processing unit, is characterized in that, also comprises remote radio coupling unit, for obtaining the time delay of the default remote termination of radio frequency stretch system;
Described uplink baseband processing unit, is modulated into digital signal for the analog if signal that described down-conversion is formed, and according to described time delay, described digital signal is carried out to time delay adjustment, and the digital signal after adjusting is reduced to analog if signal.
8. base station according to claim 7 upward signal processing unit, is characterized in that,
Described remote radio coupling unit, also, for obtaining the time delay of each remote termination of radio frequency stretch system, the remote termination of time delay maximum is made as default remote termination, to each remote termination forward delay interval instruction of radio frequency stretch system, delay time is described time delay, to up baseband processing unit, sends described time delay.
9. according to the base station upward signal processing unit described in claim 6 to 8 any one, it is characterized in that, also comprise:
Be connected to the low noise amplifier between described MT end duplexer/MT end circulator and described down conversion module, for the up radiofrequency signal receiving is carried out to filtering, amplification;
And/or
Be connected to the upstream amplifier between described up-converter module and described DT end duplexer/DT end circulator, for the up radiofrequency signal after reduction is amplified.
10. according to the base station upward signal processing unit described in claim 6 to 8 any one, it is characterized in that, also comprise bypass module, described bypass module comprises detecting unit and by-pass switch, wherein:
Whether described detecting unit breaks down for detection of described down conversion module, uplink baseband processing unit or up-converter module, if so, by-pass switch described in conducting.
11. base station according to claim 9 upward signal processing unit, is characterized in that, also comprise bypass module, described bypass module comprises detecting unit and by-pass switch, wherein:
Whether described detecting unit breaks down for detection of described low noise amplifier, down conversion module, uplink baseband processing unit, up-converter module or upstream amplifier, if so, by-pass switch described in conducting.
12. according to the base station upward signal processing unit described in claim 6 to 8 any one, it is characterized in that, described uplink baseband processing unit is realized by asic chip, DSP, FPGA, CPLD or EPLD.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021218682A1 (en) * | 2020-04-28 | 2021-11-04 | 华为技术有限公司 | Communication method, apparatus and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201063625Y (en) * | 2007-06-22 | 2008-05-21 | 武汉虹信通信技术有限责任公司 | Novel GSM repeater |
| CN101262270A (en) * | 2008-04-02 | 2008-09-10 | 深圳国人通信有限公司 | A method and device for realizing digital remote communication in the base station system |
| US20100315147A1 (en) * | 2009-06-12 | 2010-12-16 | Micron Technology, Inc. | Phase mixer with adjustable load-to-drive ratio |
| CN101980580A (en) * | 2010-11-29 | 2011-02-23 | 大唐移动通信设备有限公司 | Base station, remote radio unit and signal sending method thereof |
| CN102035589A (en) * | 2010-11-29 | 2011-04-27 | 大唐移动通信设备有限公司 | Base station, far-end radio frequency unit and signal sending method thereof |
-
2013
- 2013-10-08 CN CN201310464385.2A patent/CN103533677B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201063625Y (en) * | 2007-06-22 | 2008-05-21 | 武汉虹信通信技术有限责任公司 | Novel GSM repeater |
| CN101262270A (en) * | 2008-04-02 | 2008-09-10 | 深圳国人通信有限公司 | A method and device for realizing digital remote communication in the base station system |
| US20100315147A1 (en) * | 2009-06-12 | 2010-12-16 | Micron Technology, Inc. | Phase mixer with adjustable load-to-drive ratio |
| CN101980580A (en) * | 2010-11-29 | 2011-02-23 | 大唐移动通信设备有限公司 | Base station, remote radio unit and signal sending method thereof |
| CN102035589A (en) * | 2010-11-29 | 2011-04-27 | 大唐移动通信设备有限公司 | Base station, far-end radio frequency unit and signal sending method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218682A1 (en) * | 2020-04-28 | 2021-11-04 | 华为技术有限公司 | Communication method, apparatus and system |
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