CN105227280A - A kind of data processing equipment and method, BBU, RRU - Google Patents
A kind of data processing equipment and method, BBU, RRU Download PDFInfo
- Publication number
- CN105227280A CN105227280A CN201410299575.8A CN201410299575A CN105227280A CN 105227280 A CN105227280 A CN 105227280A CN 201410299575 A CN201410299575 A CN 201410299575A CN 105227280 A CN105227280 A CN 105227280A
- Authority
- CN
- China
- Prior art keywords
- submodule
- data
- bbu
- rru
- interface
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
Abstract
The embodiment of the invention discloses a kind of data processing equipment, method and BBU, RRU, this device comprises: be arranged at first data processing module of baseband processing unit BBU and be arranged at the second data processing module of radio frequency remote unit RRU; Wherein, be connected by the interface between BBU and RRU between described first data processing module with described second data processing module, the I/Q data of the effective subcarrier of described interface bearing.The method comprises: by the I/Q data of the effective subcarrier of the interface bearing between BBU and RRU.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of data processing equipment and method, BBU, RRU.
Background technology
In existing wireless communication system, the base station (NodeB) of Access Network is normally by indoor baseband processing unit (BuildingBasebandUnit, and Remote Radio Unit (RadioRemoteUnit BBU), RRU) form, data interaction is carried out by interface, as shown in Figure 1 between BBU and RRU.The division of current existing BBU and RRU enters digital intermediate frequency for boundary with base band data, and what the interface like this between BBU and RRU transmitted is I signal before Digital IF Processing and Q signal.
Long Term Evolution (LongTermEvolution, LTE) system supports 20MHz bandwidth usually, in order to increase handling property, usually can configure multiple antennas again.Divide (see Fig. 1) according to the interface between existing BBU and RRU, the speed of this interface (or being called data bandwidth) demand can be caused very large.For 8 antenna 20MHz bandwidth (sampling rate is about 30.72M/s), due to current based on the consideration of quantified precision, I signal bit wide and Q signal bit wide are all set as 15bit, and the interface rate computing formula therefore needed is as follows:
Interface rate=(I signal bit wide+Q signal bit wide) × sampling rate × antenna number × 10/8 × 16/15
＝30bit×30.72M/s×8×10/8×16/15
＝9.8304Gbps
≈10Gbps
In formula, 10/8 is the light mouth redundancy brought of encoding, and 16/15 is the redundancy that control word is brought.Formula above just considers the situation of single sector, and a present exemplary base station is all generally 3 sectors, at this moment just has the flow of 3 times.Following likely in the face of the network link topology shown in Fig. 2.In the network link topology shown in Fig. 2, a RRU needs the data bandwidth of 10Gbps, 3 RRU cascades just need the data bandwidth of 30Gbps, so large interface rate not only needs a large amount of fiber resources, improve cost, also make technology realize becoming very difficult simultaneously, bring very large hidden danger to product stability; Similarly, if 100 RRU exchange to BBU by switching network, so this switching network just needs the data exchange capability of 1000Gbps, and this obviously proposes huge requirement to switching network.Therefore, the data throughout demand how reduced on interface becomes present stage very important problem.
Summary of the invention
In view of this, for solving the technical problem of existing existence, the embodiment of the present invention provides:
A kind of data processing equipment, comprising: be arranged at first data processing module of baseband processing unit BBU and be arranged at the second data processing module of radio frequency remote unit RRU; Wherein, be connected by the interface between BBU and RRU between described first data processing module with described second data processing module, the I/Q data of the effective subcarrier of described interface bearing.
Preferably, described first data processing module comprises resource mapping submodule, and described second data processing module comprises inverse fast Fourier transform IFFT submodule,
Described resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, sends to IFFT submodule afterwards;
Described IFFT submodule, for by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value,
Be connected by the interface between BBU and RRU between described resource mapping submodule with described IFFT submodule.
Preferably, described first data processing module also comprises: for first medium access control MAC entity, encoding submodule, the baseband modulation submodule of down direction, wherein,
Described first MAC entity, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
Preferably, described first data processing module also comprises: resource inverse mapping submodule, and described second data processing module also comprises fast Fourier transform FFT submodule,
Described FFT submodule, for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then delivers to resource inverse mapping submodule;
Described resource inverse mapping submodule, for being separated by the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data,
Be connected by the interface between RRU and BBU between described FFT submodule with described resource inverse mapping submodule.
Preferably, described first data processing module also comprises: base band demodulating submodule, decoding submodule and the second MAC entity for up direction, wherein,
Described resource inverse mapping submodule, also for described antenna sequence data is sent to base band demodulating submodule;
Described base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule, for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity, for carrying out MAC layer process to the data from decoding submodule.
A kind of BBU, is connected with RRU by interface, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
Preferably, described BBU comprises resource mapping submodule,
Described resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, is sent to RRU afterwards by the interface between BBU and RRU.
Preferably, described BBU also comprises: for first medium access control MAC entity, encoding submodule, the baseband modulation submodule of down direction, wherein,
Described first MAC entity, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
Preferably, described BBU also comprises resource inverse mapping submodule,
Described resource inverse mapping submodule, for receiving the data from RRU, and separates the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data.
Preferably, described BBU also comprises: base band demodulating submodule, decoding submodule and the second MAC entity for up direction, wherein,
Described resource inverse mapping submodule, also for described antenna sequence data is sent to base band demodulating submodule;
Described base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule, for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity, for carrying out MAC layer process to the data from decoding submodule.
A kind of RRU, is connected with BBU by interface, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
Preferably, described RRU comprises IFFT submodule,
Described IFFT submodule, for according to the data from BBU, by invert fast fourier transformation, adds Cyclic Prefix, for each antenna port produces the time-domain OFDM symbol of complex value.
Preferably, described RRU also comprises FFT submodule,
Described FFT submodule, for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then sends to BBU.
A kind of data processing method, comprising:
By the I/Q data of the effective subcarrier of the interface bearing between BBU and RRU.
Preferably, the method specifically comprises:
BBU sends to RRU after the complex value modulation symbol of each antenna port is mapped to physical resource submodule;
RRU by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value.
Preferably, before the complex value modulation symbol of each antenna port is mapped to physical resource submodule by described BBU, the method also comprises:
Described BBU carries out MAC layer process to the data received;
Described BBU carries out chnnel coding to the data after described MAC layer process;
Described BBU carries out baseband modulation to the data after described chnnel coding process, produces complex value modulation symbol.
Preferably, the method also comprises:
The I/Q data of described RRU to digital intermediate frequency goes Cyclic Prefix, Fourier's series process, sends to BBU afterwards;
Data pick-up on each running time-frequency resource is separated by described BBU, and forms corresponding antenna sequence data.
Preferably, the data pick-up on each running time-frequency resource is separated by described BBU, and after forming corresponding antenna sequence data, the method also comprises:
Channel estimating, equilibrium and demodulation process are carried out to described antenna sequence data;
Channel decoding is carried out to the data after demodulation process;
MAC layer process is carried out to the data after described channel decoding.
A kind of data processing equipment of the embodiment of the present invention and method, BBU, RRU, the I/Q data of the effective subcarrier of the interface bearing between BBU and RRU.By the scheme described in the embodiment of the present invention, the interface between BBU and RRU only transmits the I/Q data of effective subcarrier, thus the data throughout on the interface between BBU and RRU can be reduced.
Accompanying drawing explanation
Fig. 1 is the dividing mode schematic diagram of BBU and RRU in base station in prior art;
The network link topology of Fig. 2 faced by following possibility;
Fig. 3 is for embodiments providing a kind of data processing equipment structural representation;
Fig. 4 is the structural representation of one embodiment of the invention first data processing module;
Fig. 5 is the structural representation of yet another embodiment of the invention first data processing module;
Fig. 6 is the structural representation of yet another embodiment of the invention first data processing module;
Fig. 7 is the structural representation of yet another embodiment of the invention first data processing module;
Fig. 8 is a kind of data processing method schematic flow sheet of one embodiment of the invention;
Fig. 9 is a kind of data processing method schematic flow sheet of yet another embodiment of the invention;
Figure 10 is a kind of data processing method schematic flow sheet of yet another embodiment of the invention;
Figure 11 is a kind of data processing method schematic flow sheet of yet another embodiment of the invention;
Figure 12 is a kind of data processing equipment structural representation for down direction described in the embodiment of the present invention 1;
Figure 13 is a kind of data processing equipment structural representation for down direction described in the embodiment of the present invention 2.
Embodiment
Data processing equipment in existing BBU shown in Fig. 1, comprising at down direction (direction namely from BBU to RRU): medium access control (MediaAccessControl, MAC) entity, encoding submodule, baseband modulation submodule, resource mapping submodule and IFFT submodule, wherein, MAC entity is used for carrying out MAC layer process to the data from the control in BBU and clock module, then sends to encoding submodule; Encoding submodule is used for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule; Baseband modulation submodule is used for carrying out baseband modulation to the data from encoding submodule, produces complex value modulation symbol, then sends to resource mapping submodule; Resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, then sends to IFFT submodule; IFFT submodule by invert fast fourier transformation, add Cyclic Prefix, for each antenna port produces time domain OFDM (OrthogonalFrequencyDivisionMultiplexing) symbol of complex value, then the data intermediate frequency module in RRU is sent to process by the interface between BBU and RRU.
According to the process of module each in data processing equipment in BBU on down direction described above and each other mutual visible, in IFFT conversion, for the ease of computer disposal, require IFFT count must be 2 power, for 20MHz bandwidth, 1200 subcarriers are continuous print frequency-region signals, time-domain signal is become by IFFT, but count be not 2 power, ensure that converting rear information can not lose, must adopt carry out IFFT conversion at 2048, wherein 1200 effective subcarrier information of transmission, remaining point is defaulted as zero.Therefore through IFFT submodule, modulation symbol data adds 70.7%, and therefore, the actual bearer data of the interface of BBU and RRU add 70.7% than valid data, and the rate requirement that directly results in interface is very large.
Data processing equipment in existing BBU shown in Fig. 1, comprising at up direction (direction namely from RRU to BBU): FFT submodule, resource inverse mapping submodule, base band demodulating submodule, decoding submodule and MAC entity, wherein, FFT submodule is used for by the data of the interface between BBU and RRU from the data intermediate frequency module in RRU, Cyclic Prefix, Fourier's series are gone to it, then delivers to resource inverse mapping submodule; Data pick-up on each running time-frequency resource is separated by resource inverse mapping submodule, and forms corresponding antenna sequence data, is sent to base band demodulating submodule; To data, it carries out channel estimating, equilibrium and demodulation process to base band demodulating submodule, then sends to decoding submodule; Decoding submodule is used for carrying out channel decoding to the data from base band demodulating submodule, then sends to MAC entity; MAC entity is used for carrying out MAC layer process to the data from decoding submodule, then sends to the control in BBU and clock module.
According to the process of module each in data processing equipment in BBU on up direction described above and each other mutual visible, what convert pre-treatment due to FFT is the I/Q data of 2048, actual valid data are 1200 points, therefore, the actual bearer data of the interface of BBU and RRU add 70.7% than valid data, and the rate requirement that directly results in interface is very large.
Visible based on above description, if the data of the interface bearing between BBU and RRU are effective 1200 effective subcarrier datas, the rate requirement of interface so just greatly can be reduced.Therefore, no matter be at down direction or at up direction, the IFFT submodule in the data processing equipment in BBU and FFT submodule be placed on opposite side, i.e. the RRU side of interface, will the key point reducing interface rate demand be become.
Based on above consideration, embodiments provide a kind of data processing equipment, as shown in Figure 3, this device comprises: be arranged at first data processing module 31 of baseband processing unit BBU and be arranged at the second data processing module 32 of radio frequency remote unit RRU; Wherein, be connected by the interface between BBU and RRU between described first data processing module 31 with described second data processing module 32, the I/Q data of the effective subcarrier of described interface bearing.
Optionally, as shown in Figure 4, in an embodiment of the present invention, described first data processing module 31 comprises resource mapping submodule 311, and described second data processing module 32 comprises inverse fast Fourier transform IFFT submodule 321,
Described resource mapping submodule 311, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, sends to IFFT submodule afterwards; It should be noted that, for 20MHz bandwidth, what resource mapping submodule transmitted is 1200 subcarrier modulation symbols.
Described IFFT submodule 321, for by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value.
Be connected by the interface between BBU and RRU between described resource mapping submodule 311 with described IFFT submodule 321.
It should be noted that, for the ease of computer disposal, require IFFT count must be 2 power, for 20MHz bandwidth, 1200 subcarriers are continuous print frequency-region signals, time-domain signal is become by IFFT, but count be not 2 power, ensure that converting rear information can not lose, and must adopt carry out IFFT conversion at 2048, wherein 1200 effective subcarrier information of transmission, remaining point is defaulted as zero.Therefore through IFFT submodule, modulation symbol data adds 70.7%, then sends to the data intermediate frequency module in RRU.
Optionally, as shown in Figure 5, in an embodiment of the present invention, described first data processing module 31 also comprises: for first medium access control MAC entity 312, encoding submodule 313, the baseband modulation submodule 314 of down direction (direction from BBU to RRU), wherein
Described first MAC entity 312, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule 313, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule 314, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
Optionally, as shown in Figure 6, described first data processing module 31 can also comprise: resource inverse mapping submodule 311 ', and described second data processing module 32 also comprises fast Fourier transform FFT submodule 321 ',
Described FFT submodule 321 ', for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then delivers to resource inverse mapping submodule;
Described resource inverse mapping submodule 311 ', for being separated by the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data,
Be connected by the interface between RRU and BBU between described FFT submodule 321 ' with described resource inverse mapping submodule 311 '.
Optionally, as shown in Figure 7, in an embodiment of the present invention, described first data processing module 31 also comprises: base band demodulating submodule 312 ', decoding submodule 313 ' and the second MAC entity 314 ' for up direction (direction from RRU to BBU), wherein
Described resource inverse mapping submodule 311 ', also for described antenna sequence data is sent to base band demodulating submodule 312 ' block;
Described base band demodulating submodule 312 ', for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule 313 ', for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity 314 ', for carrying out MAC layer process to the data from decoding submodule, then sends.
The embodiment of the present invention also correspondingly proposes a kind of BBU, is connected with RRU by interface, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
Optionally, described BBU comprises resource mapping submodule,
Described resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, is sent to RRU afterwards by the interface between BBU and RRU.
Optionally, described BBU also comprises: for first medium access control MAC entity, encoding submodule, the baseband modulation submodule of down direction, wherein,
Described first MAC entity, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
Optionally, described BBU also comprises resource inverse mapping submodule,
Described resource inverse mapping submodule, for receiving the data from RRU, and separates the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data.
Optionally, described BBU also comprises: base band demodulating submodule, decoding submodule and the second MAC entity for up direction, wherein,
Described resource inverse mapping submodule, also for described antenna sequence data is sent to base band demodulating submodule;
Described base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule, for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity, for carrying out MAC layer process to the data from decoding submodule.
The embodiment of the present invention also correspondingly proposes a kind of RRU, is connected with BBU by interface, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
Optionally, described RRU comprises IFFT submodule,
Described IFFT submodule, for according to the data from BBU, by invert fast fourier transformation, adds Cyclic Prefix, for each antenna port produces the time-domain OFDM symbol of complex value.
Optionally, described RRU also comprises FFT submodule,
Described FFT submodule, for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then sends to BBU.
Accordingly, the embodiment of the present invention also proposed a kind of data processing method, and the method comprises:
By the I/Q data of the effective subcarrier of the interface bearing between BBU and RRU.
Optionally, as shown in Figure 8, in an embodiment of the present invention, the method specifically comprises:
Step 801:BBU sends to RRU after the complex value modulation symbol of each antenna port is mapped to physical resource submodule;
Step 802:RRU by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value.
Optionally, as shown in Figure 9, in an embodiment of the present invention, before the complex value modulation symbol of each antenna port is mapped to physical resource submodule by described BBU, the method also comprises:
Step 901: described BBU carries out MAC layer process to the data received;
Step 902: described BBU carries out chnnel coding to the data after described MAC layer process;
Step 903: described BBU carries out baseband modulation to the data after described chnnel coding process, produces complex value modulation symbol.
Optionally, as shown in Figure 10, in an embodiment of the present invention, the method comprises:
The I/Q data of step 1001:RRU to digital intermediate frequency goes Cyclic Prefix, Fourier's series process, sends to BBU afterwards;
Step 1002: the data pick-up on each running time-frequency resource is separated by described BBU, and form corresponding antenna sequence data.
Optionally, as shown in figure 11, in an embodiment of the present invention, the data pick-up on each running time-frequency resource is separated by described BBU, and after forming corresponding antenna sequence data, the method also comprises:
Step 1003: channel estimating, equilibrium and demodulation process are carried out to described antenna sequence data;
Step 1004: channel decoding is carried out to the data after demodulation process;
Step 1005: MAC layer process is carried out to the data after described channel decoding.
According to foregoing description, the embodiment of the present invention only transmits the I/Q data of effective subcarrier at BBU-RRU interface, thus reduces the data throughout on the interface between BBU and RRU, thus reduces the cost of base station, the difficulty of reduction technology realization.
Below by specific embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
Figure 12 is a kind of data processing equipment structural representation for down direction described in the embodiment of the present invention 1, as shown in figure 12, described data processing equipment comprises: be positioned at the MAC entity of BBU, encoding submodule, baseband modulation submodule and resource mapping submodule, and is positioned at the IFFT submodule of RRU.Be connected by the interface between BBU and RRU between resource mapping submodule with IFFT submodule.Wherein,
MAC entity, for carrying out MAC layer process to the data from the control in BBU and clock module, then sends to encoding submodule;
Encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Baseband modulation submodule, for carrying out baseband modulation to the data by interface, then sends to resource mapping submodule;
Resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, and for 20MHz bandwidth, what it transmitted is 1200 subcarrier modulation symbols, then sends to IFFT submodule;
IFFT submodule, by invert fast fourier transformation, add Cyclic Prefix, for each antenna port produces time domain OFDM (OrthogonalFrequencyDivisionMultiplexing) symbol of complex value, then send to the data intermediate frequency module in RRU.
Accordingly, the embodiment of the present invention also proposed a kind of BBU, as shown in figure 12, except comprising existing protocol frame processing module, control and clock module and global positioning system, also comprise base band submodule, i.e. MAC entity in data processing equipment, encoding submodule, baseband modulation submodule and resource mapping submodule.Resource mapping submodule is connected by the interface between BBU and RRU with between RRU.Wherein,
MAC entity, for carrying out MAC layer process to the data from control and clock module, then sends to encoding submodule;
Encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface.
Baseband modulation submodule, for carrying out baseband modulation to the data by interface, then sends to resource mapping submodule;
Resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, and for 20MHz bandwidth, what it transmitted is 1200 subcarrier modulation symbols, then sends to RRU.
Accordingly, the embodiment of the present invention also proposed a kind of RRU, as shown in figure 12, except comprising existing digital intermediate frequency submodule, radio frequency submodule and antenna, also comprises: IFFT submodule.IFFT submodule is connected by the interface between RRU and BBU with between BBU.Wherein,
IFFT submodule, for by the data of interface from BBU, carries out invert fast fourier transformation to the data received, adds Cyclic Prefix, produces the time-domain OFDM symbol of complex value, then sends to data intermediate frequency module.
Embodiment 2
Figure 13 is a kind of data processing equipment structural representation for down direction described in the embodiment of the present invention 2, as shown in figure 13, described data processing equipment comprises: the FFT submodule being positioned at RRU, and is positioned at the resource inverse mapping submodule of BBU, base band demodulating submodule, decoding submodule and MAC entity.Be connected by the interface between RRU and BBU between FFT submodule with resource inverse mapping submodule.Wherein,
FFT submodule, removes Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then delivers to resource inverse mapping submodule;
Resource inverse mapping submodule, separates the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data, is sent to base band demodulating submodule;
Base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to data, then sends to decoding submodule by interface;
Decoding submodule, for carrying out channel decoding to the data by interface, then sends to MAC entity;
MAC entity, for carrying out MAC layer process to the data from decoding submodule, then sends to the control in BBU and clock module.
Accordingly, the embodiment of the present invention also proposed a kind of BBU, as shown in figure 13, except comprising existing protocol frame processing module, control and clock module and global positioning system, also comprise the base band submodule in data processing equipment, i.e. resource inverse mapping submodule, base band demodulating submodule, decoding submodule and MAC entity.Resource inverse mapping submodule is connected by the interface between BBU and RRU with between RRU.Wherein,
Resource inverse mapping submodule, for by the data of interface from RRU, separates the data pick-up on each running time-frequency resource the data received, and forms corresponding antenna sequence data, is sent to base band demodulating submodule;
Base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to data, then sends to decoding submodule by interface;
Decoding submodule, carries out channel decoding to data, then sends to MAC entity;
MAC entity, for carrying out MAC layer process to the data from decoding submodule, then sends to control and clock module.
Accordingly, the embodiment of the present invention also proposed a kind of RRU, as shown in figure 13, except comprising existing digital intermediate frequency submodule, radio frequency submodule and antenna, also comprises: the base band submodule in data processing equipment, i.e. FFT submodule.FFT submodule is connected by the interface between RRU and BBU with between BBU.Wherein,
FFT submodule, removes Cyclic Prefix, Fourier's series to the data from data intermediate frequency module, then sends to BBU by interface.
The function of data processing equipment divides by scheme that the embodiment of the present invention proposes again in BBU and RRU, namely before base band data enters digital intermediate frequency, the function of data processing equipment is divided again in BBU and RRU, part functional module (IFFT submodule in existing like this BBU, FFT submodule) will be set in RRU, for 20MHz bandwidth, the data of the interface bearing now between BBU and RRU will be no longer 2048 subcarrier I/Q data of redundancy, but 1200 effective subcarrier I/Q data, thus the data throughout of the interface between BBU and RRU can be reduced, and then reduce the cost of base station, the difficulty that reduction technology realizes.
It should be noted that, although the embodiment of the present invention take LTE system as embodiment, but equally also go for global system for mobile communications (GlobalSystemforMobilecommunication, GSM), Wideband Code Division Multiple Access (WCDMA) (WidebandCodeDivisionMultipleAccess, WCDMA), code division multiple access (CodeDivisionMultipleAccess, CDMA) 2000, microwave stores other wireless communication systems such as global-intercommunication (WorldwideInteroperabilityforMicrowaveAccess, WiMAX).
Above-mentioned each module can by the central processing unit (CentralProcessingUnit in electronic equipment, CPU), digital signal processor (DigitalSignalProcessor, DSP) or programmable logic array (Field-ProgrammableGateArray, FPGA) realize.
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 the form of hardware embodiment, software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of 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 square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (18)
1. a data processing equipment, is characterized in that, this device comprises: be arranged at first data processing module of baseband processing unit BBU and be arranged at the second data processing module of radio frequency remote unit RRU; Wherein, be connected by the interface between BBU and RRU between described first data processing module with described second data processing module, the I/Q data of the effective subcarrier of described interface bearing.
2. device according to claim 1, is characterized in that, described first data processing module comprises resource mapping submodule, and described second data processing module comprises inverse fast Fourier transform IFFT submodule,
Described resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, sends to IFFT submodule afterwards;
Described IFFT submodule, for by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value,
Be connected by the interface between BBU and RRU between described resource mapping submodule with described IFFT submodule.
3. device according to claim 2, is characterized in that, described first data processing module also comprises: for first medium access control MAC entity, encoding submodule, the baseband modulation submodule of down direction, wherein,
Described first MAC entity, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
4. the device according to any one of claims 1 to 3, is characterized in that, described first data processing module also comprises: resource inverse mapping submodule, and described second data processing module also comprises fast Fourier transform FFT submodule,
Described FFT submodule, for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then delivers to resource inverse mapping submodule;
Described resource inverse mapping submodule, for being separated by the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data,
Be connected by the interface between RRU and BBU between described FFT submodule with described resource inverse mapping submodule.
5. device according to claim 4, is characterized in that, described first data processing module also comprises: base band demodulating submodule, decoding submodule and the second MAC entity for up direction, wherein,
Described resource inverse mapping submodule, also for described antenna sequence data is sent to base band demodulating submodule;
Described base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule, for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity, for carrying out MAC layer process to the data from decoding submodule.
6. a BBU, is connected with RRU by interface, it is characterized in that, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
7. BBU according to claim 6, is characterized in that, described BBU comprises resource mapping submodule,
Described resource mapping submodule, is mapped to physical resource submodule for the complex value modulation symbol each antenna port, is sent to RRU afterwards by the interface between BBU and RRU.
8. BBU according to claim 7, is characterized in that, described BBU also comprises: for first medium access control MAC entity, encoding submodule, the baseband modulation submodule of down direction, wherein,
Described first MAC entity, for carrying out MAC layer process to the data received, then sends to encoding submodule;
Described encoding submodule, for carrying out chnnel coding to the data from MAC entity, then sends to baseband modulation submodule by interface;
Described baseband modulation submodule, for carrying out baseband modulation to the data by interface, producing complex value modulation symbol, then sending to resource mapping submodule.
9. the BBU according to any one of claim 6 to 8, is characterized in that, described BBU also comprises resource inverse mapping submodule,
Described resource inverse mapping submodule, for receiving the data from RRU, and separates the data pick-up on each running time-frequency resource, and forms corresponding antenna sequence data.
10. BBU according to claim 9, is characterized in that, described BBU also comprises: base band demodulating submodule, decoding submodule and the second MAC entity for up direction, wherein,
Described resource inverse mapping submodule, also for described antenna sequence data is sent to base band demodulating submodule;
Described base band demodulating submodule, for carrying out channel estimating, equilibrium and demodulation process to the data received, then sends to decoding submodule;
Described decoding submodule, for carrying out channel decoding to the data by interface, then sends to the second MAC entity;
Described second MAC entity, for carrying out MAC layer process to the data from decoding submodule.
11. 1 kinds of RRU, are connected with BBU by interface, it is characterized in that, the I/Q data of the effective subcarrier of the interface bearing between described BBU and RRU.
12. RRU according to claim 11, is characterized in that, described RRU comprises IFFT submodule,
Described IFFT submodule, for according to the data from BBU, by invert fast fourier transformation, adds Cyclic Prefix, for each antenna port produces the time-domain OFDM symbol of complex value.
13. RRU according to claim 11 or 12, it is characterized in that, described RRU also comprises FFT submodule,
Described FFT submodule, for removing Cyclic Prefix, Fourier's series to the I/Q data of RRU digital intermediate frequency, then sends to BBU.
14. 1 kinds of data processing methods, it is characterized in that, the method comprises:
By the I/Q data of the effective subcarrier of the interface bearing between BBU and RRU.
15. methods according to claim 14, it is characterized in that, the method specifically comprises:
BBU sends to RRU after the complex value modulation symbol of each antenna port is mapped to physical resource submodule;
RRU by invert fast fourier transformation, add Cyclic Prefix, be the time-domain OFDM symbol that each antenna port produces complex value.
16. methods according to claim 15, is characterized in that, before the complex value modulation symbol of each antenna port is mapped to physical resource submodule by described BBU, the method also comprises:
Described BBU carries out MAC layer process to the data received;
Described BBU carries out chnnel coding to the data after described MAC layer process;
Described BBU carries out baseband modulation to the data after described chnnel coding process, produces complex value modulation symbol.
17. according to claim 14 to the method described in 16 any one, and it is characterized in that, the method also comprises:
The I/Q data of described RRU to digital intermediate frequency goes Cyclic Prefix, Fourier's series process, sends to BBU afterwards;
Data pick-up on each running time-frequency resource is separated by described BBU, and forms corresponding antenna sequence data.
18. methods according to claim 17, is characterized in that, the data pick-up on each running time-frequency resource is separated by described BBU, and after forming corresponding antenna sequence data, the method also comprises:
Channel estimating, equilibrium and demodulation process are carried out to described antenna sequence data;
Channel decoding is carried out to the data after demodulation process;
MAC layer process is carried out to the data after described channel decoding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299575.8A CN105227280A (en) | 2014-06-26 | 2014-06-26 | A kind of data processing equipment and method, BBU, RRU |
| PCT/CN2014/092157 WO2015196726A1 (en) | 2014-06-26 | 2014-11-25 | Data processing apparatus and method, bbu, rru, and computer storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299575.8A CN105227280A (en) | 2014-06-26 | 2014-06-26 | A kind of data processing equipment and method, BBU, RRU |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105227280A true CN105227280A (en) | 2016-01-06 |
Family
ID=54936650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410299575.8A Withdrawn CN105227280A (en) | 2014-06-26 | 2014-06-26 | A kind of data processing equipment and method, BBU, RRU |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105227280A (en) |
| WO (1) | WO2015196726A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026719A (en) * | 2016-01-29 | 2017-08-08 | 华为技术有限公司 | Method for transmitting signals and communication equipment |
| CN107517503A (en) * | 2016-06-17 | 2017-12-26 | 中兴通讯股份有限公司 | A kind of processing unit, BBU, RRU and antenna correcting method |
| CN108307545A (en) * | 2016-09-23 | 2018-07-20 | 中兴通讯股份有限公司 | Data sending device after BBU and RRU function remodelings and method |
| CN108471319A (en) * | 2017-02-21 | 2018-08-31 | 中兴通讯股份有限公司 | Base station, Remote Radio Unit and its mainboard, radio frequency subcard and channel are from construction method |
| CN108934073A (en) * | 2017-05-26 | 2018-12-04 | 上海华为技术有限公司 | A kind of method, Base Band Unit and the remote radio unit of data transmission |
| WO2018223396A1 (en) * | 2017-06-09 | 2018-12-13 | 华为技术有限公司 | Remote device of base station, base station and random access method |
| CN113572543A (en) * | 2021-07-19 | 2021-10-29 | 深圳市国电科技通信有限公司 | Apparatus for testing performance of communication transmitter |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017173659A1 (en) * | 2016-04-08 | 2017-10-12 | 华为技术有限公司 | Data communication method and device |
| CN112511233A (en) * | 2019-09-16 | 2021-03-16 | 中兴通讯股份有限公司 | Radio frequency remote device, active antenna and base station system |
| CN114885343B (en) * | 2022-06-17 | 2023-04-28 | 中国联合网络通信集团有限公司 | Communication method and device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868054A (en) * | 2010-05-07 | 2010-10-20 | 武汉邮电科学研究院 | Improved distribution-type base station architecture and realization method |
| CN103428149A (en) * | 2012-05-25 | 2013-12-04 | 中兴通讯股份有限公司 | Uplink receiver of LTE base station system and data processing method thereof |
| CN103428148A (en) * | 2012-05-25 | 2013-12-04 | 中兴通讯股份有限公司 | Downlink transmitter of LTE base station system and data processing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175291B (en) * | 2007-11-21 | 2010-09-29 | 中兴通讯股份有限公司 | Distribution method and device executing AxC to RRU connected with BBU |
| CN101932002B (en) * | 2009-06-19 | 2013-03-20 | 中兴通讯股份有限公司 | Method for realizing matching between uplink transmission rate and downlink transmission rate as well as BBU and RRU |
| CN101777947B (en) * | 2010-01-19 | 2014-01-01 | 中兴通讯股份有限公司 | IQ channel distribution method and device on baseband unit |
-
2014
- 2014-06-26 CN CN201410299575.8A patent/CN105227280A/en not_active Withdrawn
- 2014-11-25 WO PCT/CN2014/092157 patent/WO2015196726A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868054A (en) * | 2010-05-07 | 2010-10-20 | 武汉邮电科学研究院 | Improved distribution-type base station architecture and realization method |
| CN103428149A (en) * | 2012-05-25 | 2013-12-04 | 中兴通讯股份有限公司 | Uplink receiver of LTE base station system and data processing method thereof |
| CN103428148A (en) * | 2012-05-25 | 2013-12-04 | 中兴通讯股份有限公司 | Downlink transmitter of LTE base station system and data processing method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026719A (en) * | 2016-01-29 | 2017-08-08 | 华为技术有限公司 | Method for transmitting signals and communication equipment |
| CN107517503A (en) * | 2016-06-17 | 2017-12-26 | 中兴通讯股份有限公司 | A kind of processing unit, BBU, RRU and antenna correcting method |
| CN108307545A (en) * | 2016-09-23 | 2018-07-20 | 中兴通讯股份有限公司 | Data sending device after BBU and RRU function remodelings and method |
| CN108307545B (en) * | 2016-09-23 | 2023-03-14 | 中兴通讯股份有限公司 | Data sending device and method after BBU and RRU function reconstruction |
| CN108471319A (en) * | 2017-02-21 | 2018-08-31 | 中兴通讯股份有限公司 | Base station, Remote Radio Unit and its mainboard, radio frequency subcard and channel are from construction method |
| CN108471319B (en) * | 2017-02-21 | 2020-05-22 | 中兴通讯股份有限公司 | Base station, radio remote unit and mainboard thereof, radio sub-card and channel self-building method |
| CN108934073A (en) * | 2017-05-26 | 2018-12-04 | 上海华为技术有限公司 | A kind of method, Base Band Unit and the remote radio unit of data transmission |
| CN108934073B (en) * | 2017-05-26 | 2022-03-29 | 上海华为技术有限公司 | Data transmission method, baseband unit and remote radio unit |
| WO2018223396A1 (en) * | 2017-06-09 | 2018-12-13 | 华为技术有限公司 | Remote device of base station, base station and random access method |
| US11330631B2 (en) | 2017-06-09 | 2022-05-10 | Huawei Technologies Co., Ltd. | Remote apparatus in base station, base station, and random access method |
| CN113572543A (en) * | 2021-07-19 | 2021-10-29 | 深圳市国电科技通信有限公司 | Apparatus for testing performance of communication transmitter |
| CN113572543B (en) * | 2021-07-19 | 2023-10-10 | 深圳市国电科技通信有限公司 | Apparatus for testing performance of communication transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015196726A1 (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105227280A (en) | A kind of data processing equipment and method, BBU, RRU | |
| US9948562B2 (en) | Method and device for transmitting pilot signal | |
| AU2016245681B2 (en) | PUCCH resource allocation method in carrier aggregation and equipments thereof | |
| US11509445B2 (en) | Information indication method, terminal device, and network device | |
| IL264474A (en) | Information transmission method and information transmission apparatus | |
| US11128508B2 (en) | Information transmission method and apparatus in wireless local area network | |
| TWI737843B (en) | Method and device for transmitting uplink signal | |
| TW201822560A (en) | Method, terminal equipment, and network equipment for transmitting information | |
| CN107517503B (en) | Processing device, BBU, RRU and antenna correction method | |
| EP4030715B1 (en) | Communication method and apparatus, and device | |
| US11212789B2 (en) | Information sending method and device | |
| AU2017394052A1 (en) | Data transmission method and apparatus | |
| TWI759492B (en) | Method for configuring bandwidth part, network equipment, and terminal | |
| US20170264464A1 (en) | Method for Processing Data, Network Node, and Terminal | |
| WO2021008392A1 (en) | Symbol processing method and apparatus | |
| WO2021000712A1 (en) | Symbol processing method and device | |
| WO2015143602A1 (en) | Method for transmitting physical layer data and data transmission device | |
| CN105450609B (en) | Frequency domain CPRI frame packaging method and BBU | |
| WO2022228117A1 (en) | Method and device for determining ptrs pattern | |
| WO2020030127A1 (en) | Resource allocation method, and related device and apparatus | |
| WO2020114317A1 (en) | Reference signal transmission method and device | |
| WO2018196624A1 (en) | Parameter configuration method and apparatus | |
| WO2018082365A1 (en) | Transmission control method, device, and system, and storage medium | |
| WO2018058550A1 (en) | Data mapping method, apparatus, and device | |
| WO2023273857A1 (en) | Signal transmission method and communication apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160106 |
|
| WW01 | Invention patent application withdrawn after publication |