CN106534006A - System and method for processing common public radio interface information - Google Patents
System and method for processing common public radio interface information Download PDFInfo
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- CN106534006A CN106534006A CN201610939894.XA CN201610939894A CN106534006A CN 106534006 A CN106534006 A CN 106534006A CN 201610939894 A CN201610939894 A CN 201610939894A CN 106534006 A CN106534006 A CN 106534006A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
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Abstract
The invention belongs to the communication field and provides a system and a method for processing common public radio interface information, so as to reduce demands for bandwidth of baseband transmission analog signals. The system comprises a sending end serial deseriallizer used for separating a first path of digital baseband signals and a second path of digital baseband signals from CPRI (Common Public Radio Interface) signals, an emitter used for converting the first path of digital baseband signals and the second path of digital baseband signals into one path of analog baseband signals and sending the one path of analog baseband signals to a receiver via a sending end analog front end, the receiver used for converting the received one path of analog baseband signals into one path of high speed digital modulation pulse waves, then down converting and mapping the path of high speed digital modulation pulse waves into a first path of digital baseband signals and a second path of digital baseband signals, and a receiving end serial deseriallizer used for interleaving and regrouping the first path of digital baseband signals and the second path of digital baseband signals to restore the CPRI signals. The bandwidth occupied by the technical scheme of the invention is far narrower than the bandwidth occupied by the conventional analog radio frequency transmission, and defects of easiness of signal distortion and high device cost and the like are avoided.
Description
Technical field
The invention belongs to the communications field, more particularly to a kind of processing system of common public radio interface information and method.
Background technology
Common public radio interface (the Common Public Radio Interface, CPRI) is a kind of base station number
According to processing and control element (PCE) (Radio Equipment Control, REC) and base transceiver unit (Radio Equipment, RE)
Between coffret.CPRI interfaces include three kinds of different flow of information, i.e.,：Client layer data flow (IQ data), control management
Layer data stream (Control and Management, C＆M) and synchronous data flow (Synchronization, Sync.), association
View includes physical layer (i.e. L1 layers) and data link layer (i.e. L2 layers).By L1, L2 layer protocol, user's I/Q data, control and pipe
Reason and synchronizing signal can carry out the exchange of up-downgoing between REC and RE, and which includes downlink transfer and uplink, wherein,
The process of downlink transfer is that REC utilizes time-multiplexed mode, and three kinds of different flow of information of CPRI interfaces are beaten in physical layer L1
CPRI serial data formats are bundled into, and export the analog baseband signal with nonreturn to zero code (NRZ)；RE receives what REC sent
After CPRI base band downstream data flows, it is taken out user's I/Q data and sequentially does Base-Band Processing, digital-to-analogue conversion and upper change to which
Analog radio-frequency signal is generated in frequency etc., the analog radio-frequency signal of generation is sent by antenna afterwards.Uplink
Process is, after the antenna of RE receives up analog radio-frequency signal, which sequentially to be done at down coversion, analog digital conversion and base band
Reason, is finally packaged into CPRI forms together with C＆M and Sync. information in L1 layers, then NRZ analog baseband signals is passed through CPRI interfaces
It is back to REC.
It is noted that the generated analog radio-frequency signals of RE bandwidth much smaller than the CPRI baseband signals which receives
Speed size, in other words, for the carrying of same wireless signal, CPRI baseband rates require to be significantly larger than radio frequency signal band
It is wide.For example, analog radio frequency generated in RE accounts for the wireless signal of 20MHz bandwidth, needs that 1.2288Gb/s's is descending
CPRI data signaling rates.Fiber-optic transfer can be adopted between REC and RE or is wirelessly transferred, and construction one can effectively reduce band
The CPRI transmission subsystems (bandwidth efficient CPRI transport sub-systems) of wide demand are always
The target of industry product development.
It is existing it is a kind of reduce bandwidth demand method be：In REC sides, using serial/deserializer from CPRI signals
After isolating IQ data and general information, data are uploaded to two transmitters respectively and produce two-way mould respectively
Intend radiofrequency signal, this two-way analog radio-frequency signal is sent to RE and received by two independent receivers, two by different passages
Analog radio-frequency signal is demodulated to IQ data and general information digital baseband signals by independent receivers respectively, and
Two-way baseband signal is recombinated by serial/deserializer and is reduced into CPRI analog baseband signals, so far, complete REC and RE it
Between CPRI analog baseband signals transmission；Handling principle of the CPRI analog baseband signals in RE and the handling principle in REC
It is identical, simply complete reverse operating.
Although above-mentioned existing method has been effectively saved bandwidth, but because the papr of radiofrequency signal itself
(Peak to Average Power Ratio, PAPR) is high, and the dynamic range to device and linearity are high, two-way radio frequency
Signal does not have advantage on device cost to the device in requisition for two sets of process radiofrequency signals；Two-way analog radio-frequency signal exists
Different frequency bands can not possibly be consistent with the transfer rate under different passages, this may produce power attenuation (power fading) with
And the problems such as beat frequency crosstalk (beat interference), cause distorted signals, and can be with the increase of radio-frequency carrier number
And become apparent from；The reason of distorted signals is easily caused just because of multi-channel rf signal, receiving terminal has also needed to relief area
Two paths of signals after synchronous demodulation, this undoubtedly also increases the cost of device, while being also possible to increase the size of device.
The content of the invention
It is an object of the invention to provide a kind of processing meanss of common public radio interface information and system, to reduce base
With demand of the transmission of analogue signal to bandwidth.
First aspect present invention provides a kind of processing system of common public radio interface information, and the system includes：
Originator deserializer, for isolating first via digital baseband letter from common public radio interface CPRI signal
Number and the second railway digital baseband signal, the first via digital baseband signal include client layer data flow IQ data, described second
Railway digital baseband signal includes general information stream, and the general information stream converges control management level C＆M data flow and synchrodata
Stream；
Transmitter, for distinguishing demapping simultaneously by the first via digital baseband signal and the second railway digital baseband signal
After frequency conversion is first via digital radio signal and the second railway digital radiofrequency signal, high bit rate modulation arteries and veins all the way is successively modulated to
Ripple, is reconverted into analog baseband signal all the way, and sends to receiver via originator AFE (analog front end)；
Receiver, for the analog baseband signal all the way for receiving is converted to after high bit rate modulation pulse wave all the way, first
High bit rate modulation pulse wave demodulation is made as into first via digital radio signal and the second railway digital radiofrequency signal, then respectively will
The first via digital radio signal and the second railway digital radiofrequency signal down coversion and be mapped as first via digital baseband signal and
Second railway digital baseband signal；
Receiving end deserializer, for interleaving weight by the first via digital baseband signal and the second railway digital baseband signal
Group is being reduced to the CPRI signals.
Second aspect present invention provides a kind of processing method of common public radio interface information, and methods described includes：
Originator deserializer isolate from common public radio interface CPRI signal first via digital baseband signal and
Second railway digital baseband signal, the first via digital baseband signal include client layer data flow IQ data, second way
Word baseband signal includes general information stream, and the general information stream converges control management level C＆M data flow and synchronous data flow；
The first via digital baseband signal and the second railway digital baseband signal are distinguished demapping up-conversion by transmitter
After for two-way digital radio signal, high bit rate modulation pulse wave all the way is successively modulated to, is reconverted into analog baseband signal all the way,
And send to receiver via originator AFE (analog front end)；
The receiver is converted to the analog baseband signal all the way for receiving after high bit rate modulation pulse wave all the way, first will
The high bit rate modulation pulse wave demodulation is made as two-way digital radio signal, then will become under the two-way digital radio signal respectively
Frequency is simultaneously mapped as first via digital baseband signal and the second railway digital baseband signal；
Receiving end deserializer by the first via digital baseband signal and the second railway digital baseband signal interleave restructuring with
It is reduced to the CPRI signals.
Knowable to the invention described above technical scheme, the two-way digital baseband signal isolated from CPRI signals is modulated to
High Speed Modulation pulse signal after being converted to analog baseband signal all the way, sends to receiver via originator AFE (analog front end) all the way,
Two-way digital baseband signal is actually processed to be virtual radiofiequency signal all the way, on the one hand, the bandwidth shared by which is far smaller than
Existing analog radio frequency transmission shared bandwidth, on the other hand, it is to avoid the easy distortion of existing radio frequency transmission technology signal
With increase the defect such as device cost.
Description of the drawings
Fig. 1 is the structural representation of the processing system of the common public radio interface information that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation of the processing system of the common public radio interface information that the embodiment of the present invention two is provided；
Fig. 3 is the structural representation of the processing system of the common public radio interface information that the embodiment of the present invention three is provided；
Fig. 4 is the structural representation of the delta-sigma modulator that the embodiment of the present invention four is provided；
Fig. 5 is the process flow schematic diagram of the common public radio interface information that the embodiment of the present invention five is provided.
Specific embodiment
In order that the purpose of the present invention, technical scheme and beneficial effect become more apparent, below in conjunction with accompanying drawing and enforcement
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
It is bright, it is not intended to limit the present invention.
The embodiment of the present invention provides a kind of processing system of common public radio interface information and method, the system bag
Include：Originator deserializer, for isolate from common public radio interface CPRI signal first via digital baseband signal and
Second railway digital baseband signal, the first via digital baseband signal include client layer data flow IQ data, second way
Word baseband signal includes general information stream, and the general information stream converges control management level C＆M data flow and synchronous data flow；Send out
Machine is penetrated, for demapping the first via digital baseband signal and the second railway digital baseband signal are up-converted to first respectively
After railway digital radiofrequency signal and the second railway digital radiofrequency signal, high bit rate modulation pulse wave all the way is successively modulated to, is reconverted into
Analog baseband signal all the way, and send to receiver via originator AFE (analog front end)；Receiver, for by the simulation all the way for receiving
After baseband signal is converted to high bit rate modulation pulse wave all the way, high bit rate modulation pulse wave demodulation is made as into first via number first
Word radiofrequency signal and the second railway digital radiofrequency signal, then respectively by the first via digital radio signal and the second railway digital radio frequency
Signal down coversion is simultaneously mapped as first via digital baseband signal and the second railway digital baseband signal；Receiving end deserializer, is used for
The first via digital baseband signal and the second railway digital baseband signal are interleave into restructuring to be reduced to the CPRI signals.This
Bright embodiment also provides the processing method of corresponding common public radio interface information.It is described in detail individually below.
Accompanying drawing 1 is referred to, is the knot of the processing system of the common public radio interface information that the embodiment of the present invention one is provided
Structure schematic diagram, it is main to include originator deserializer 101, transmitter 102, receiver 103 and receiving end deserializer 104, in detail
Carefully it is described as follows：
Originator deserializer 101, for from common public radio interface (the Common Public Radio
Interface, CPRI) first via digital baseband signal and the second railway digital baseband signal is isolated in signal；
In embodiments of the present invention, the first via digital baseband signal that deserializer 101 is separated includes client layer
Data flow IQ data, the second railway digital baseband signal are flowed comprising general information (general information), and general letter
Breath stream converged control management level (Control and Management, C＆M) data flow and it is synchronous (Synchronization,
Sync.) data flow.
Transmitter 102, for distinguishing demapping by the first via digital baseband signal and the second railway digital baseband signal
And after up-converting to first via digital radio signal and the second railway digital radiofrequency signal, first merge and be modulated to high-speed figure tune all the way
Pulse wave processed, is reconverted into analog baseband signal all the way, and sends to receiver 103 via originator AFE (analog front end).
Receiver 103, in the analog baseband signal all the way for receiving is converted to after high bit rate modulation pulse wave all the way,
First demodulated and be made as first via digital radio signal and the second railway digital radiofrequency signal, then down coversion be mapped as first respectively
Railway digital baseband signal and the second railway digital baseband signal.
Receiving end deserializer 104, for will receive first via digital baseband signal and the second railway digital baseband signal
Restructuring is interleave to be reduced to a common public radio interface CPRI signal.
There are two transmitters and RE there are two receivers different from REC in prior art, it is in embodiments of the present invention, general
The only one of which transmitter 102 and a transmitter 103 of the processing system of common wireless interface information.From originator deserializer
101 first via digital baseband signals separated and the second railway digital baseband signal, are interleave the same transmitter 102 of importing,
It is modulated to high bit rate modulation pulse wave all the way and sends to receiver 103 after being converted to analog baseband signal all the way.Single reception
Machine 103 can demodulate two-way digital radio signal, and then obtain first via digital baseband signal and the second railway digital baseband signal.
After Jing receiving ends deserializer 104 interleave restructuring use common wireless interface signal to be reduced into one.
Knowable to the processing system of the common public radio interface information of 1 example of above-mentioned accompanying drawing, separate from CPRI signals
After the two-way digital baseband signal for going out is modulated to High Speed Modulation pulse signal all the way and is converted to analog baseband signal all the way, Jing
Sent from AFE (analog front end) to base transceiver unit, two-way digital baseband signal is actually processed to be virtual radiofiequency letter all the way
Number, on the one hand, the bandwidth shared by which is far smaller than the shared bandwidth of existing analog radio frequency transmission, on the other hand, it is to avoid
The easy distortion of existing radio frequency transmission technology signal and increase the defects such as device cost.Another advantage is that allowing two-way
Digital baseband signal is launched by single transmitter, Jing after same wirelessly or non-wirelessly channel transfer, then is received by single receiver.Two
Railway digital baseband signal is all to maintain synchronous from start to finish, therefore avoids receiving terminal needs in existing radio frequency transmission technology
The cost of signal and complexity after synchronous two-way is demodulated are come in extra relief area.
The transmitter 102 of 1 example of accompanying drawing can include the first digital up converter 201, the second digital up converter 202,
Originator digital radio signal processing module 203 and originator AFE (analog front end) 204, and before its receiver 103 can include the simulation of handss end
End 205, receiving end digital radio signal processing module 206, the first digital down converter 207, the second digital down converter 208, such as
The processing system of the common public radio interface information that the embodiment of the present invention two shown in accompanying drawing 2 is provided, wherein：
First digital up converter 201, for up-converting to the first via by the first via digital baseband signal after demapping
Digital radio signal；
Second digital up converter 202, up-converts to the second tunnel for the second railway digital baseband signal after by demapping
Digital radio signal；
Originator digital radio signal processing module 203, for by first via digital radio signal and the second railway digital radio frequency
After signal is modulated to high bit rate modulation pulse wave all the way after merging, the high bit rate modulation pulse wave is converted to into ABB all the way
Transmit after signal to originator AFE (analog front end) 204；
Originator AFE (analog front end) 204, for digital radio signal processing module 203 to be changed the letter of ABB all the way of gained
Number send to receiver 103；
Receiving end AFE (analog front end) 205, for receiving the analog baseband signal all the way sent by originator AFE (analog front end) 204.
Receiving end digital radio signal processing module 206, for the ABB all the way for receiving receiving end AFE (analog front end) 205
Signal is first converted to high bit rate modulation pulse wave all the way, then is demodulated the first via digital radio signal and second for being made as merging
Railway digital radiofrequency signal；
First digital down converter 207, for by first via digital radio signal down coversion and being mapped as the first railway digital
Baseband signal；
Second digital down converter 208, for by the second railway digital radiofrequency signal down coversion and being mapped as the second railway digital
Baseband signal；
Two-way digital radio signal digital up converter exported with prior art is respectively converted into two-way analog radio frequency
Signal simultaneously transmits difference in each independent passage, in embodiments of the present invention, the two-way of deserializer 101 of starting output
Digital baseband signal is after demapping respectively via two digital up converter i.e. the first digital up converter 201 and the second number
After word upconverter 202 up-converts to first via digital radio signal and the second railway digital radiofrequency signal respectively, the first railway digital
Radiofrequency signal and the second railway digital radiofrequency signal are modulated to high bit rate modulation arteries and veins all the way by digital radio signal processing module 203
Ripple after being converted to analog baseband signal all the way, transmits and sends to receiver 103 in single channel via AFE (analog front end) 204.
The digital radio signal processing module 203 of 2 example of accompanying drawing can turn including combiner 301, manipulator 302 and digital-to-analogue
Parallel operation 303, and receiving end digital radio signal processing module 206 can be including analog-digital converter 304, demodulator 305 and work(point
Device 306, as shown in Figure 3 the embodiment of the present invention three provide common public radio interface information processing system, wherein：
Combiner 301, for by the first via digital radio signal obtained by 201 up-conversion of the first digital up converter and
The second railway digital radiofrequency signal obtained by two digital up converter, 202 up-conversion is exported after merging into digital radio signal all the way；
Manipulator 302, the digital radio signal all the way for combiner 301 is exported are modulated to high bit rate modulation all the way
Export after pulse wave；
It should be noted that in embodiments of the present invention, manipulator 302 is pulse-width modulator, and which can adopt arteries and veins
Rush width modulated (Pulse Width Modulation, PWM) to be modulated to the digital radio signal all the way that combiner 301 is exported
Export after high bit rate modulation pulse wave all the way.PWM has various implementations, suitable for the present invention.It is normal with one of which
See delta-sigma modulation (Delta-Sigma Modulation, DSM) as a example by, its basic operation include over-sampling,
The process of noise shaping and quantification filtering, can be by the digital loop constituted comprising difference amplifier, integrator, comparator etc.
Constitute.A kind of structure of delta-sigma modulator is as shown in Figure 4.
Digital to analog converter 303, the high bit rate modulation pulse wave for manipulator 302 is exported are converted to ABB all the way
Transmit after signal to AFE (analog front end) 204；
Analog-digital converter 304, the analog baseband signal all the way for receiving end AFE (analog front end) 205 is received are converted to all the way
High bit rate modulation pulse wave；
Demodulator 305, for the pulse wave pulse width solution of high bit rate modulation all the way for exporting analog-digital converter 304
Manipulator (Pulse Width Demodulator, PWDM) is demodulated into first via digital radio signal and second tunnel of a merging
Digital radio signal.Modulated come as a example by realizing PWM, then receiving terminal only needs a digital filter using DSM by transmitting terminal
(filter) can be achieved with the function of PWDM；
Power splitter 306, for the first via digital radio signal of merging that exports demodulator 305 and the second railway digital
Radiofrequency signal is divided into two equal portions with power and delivers to the first digital down converter 207 and the second digital down converter 208 respectively；
It should be noted that in embodiments of the present invention, 303 only one of which of digital to analog converter, rather than two, analog digital conversion
The also only one of which of device 304.In embodiments of the present invention, the signal after digital to analog converter 303 is changed from the appearance is simulation base
Band signal, but be substantially but that digital radio signal adds High-frequency quantization noise, which passes through single channel (single
Channel) transmit to base transceiver unit.This virtual radiofiequency transmission avoids the various shortcoming of existing radio frequency transmission technology,
Bandwidth shared by which is much smaller than traditional CPRI ABB transmission bandwidths.
Accompanying drawing 5 is referred to, is the process flow of the common public radio interface information that the embodiment of the present invention five is provided
Schematic diagram, its executive agent can be the processing systems of the common public radio interface information of 1 example of accompanying drawing,.What accompanying drawing 4 was provided
The processing method of common public radio interface information mainly includes step S401 to S404, describes in detail as follows：
S501, deserializer isolate from common public radio interface CPRI signal first via digital baseband signal and
Second railway digital baseband signal, wherein, first via digital baseband signal includes client layer data flow IQ data, the second railway digital
Baseband signal includes general information stream, and general information stream converges control management level C＆M data flow and synchronous data flow；
First via digital baseband signal and the second railway digital baseband signal are distinguished demapping up-conversion by S502, transmitter
After for two-way digital radio signal, high bit rate modulation pulse wave all the way is successively modulated to, is reconverted into analog baseband signal all the way,
And send to receiver via originator AFE (analog front end).
Used as one embodiment of the invention, first via digital baseband signal and the second railway digital baseband signal are divided by transmitter
Other demapping after up-converting to first via digital radio signal and the second railway digital radiofrequency signal, is successively modulated to all the way at a high speed
Digital modulation pulse wave, is reconverted into analog baseband signal all the way, and can be by such as to receiver transmission via originator AFE (analog front end)
Lower step S5021 to S5024 is realized：
First via digital baseband signal after the demapping is up-converted to first by S5021, the first digital up converter
Railway digital radiofrequency signal；
S5022, the second digital up converter by demapping after the second railway digital baseband signal up-convert to the second way
Word radiofrequency signal；
The first via digital radio signal and the second railway digital are penetrated by S5023, originator digital radio signal processing module
After frequency signal modulation is for high bit rate modulation pulse wave all the way, the pulse wave of high bit rate modulation all the way is converted to and simulate all the way base
Band signal is transmitted to originator AFE (analog front end).
Specifically, the first via digital radio signal and the second railway digital are penetrated by digital radio signal processing module of starting
After frequency signal modulation is for high bit rate modulation pulse wave all the way, the pulse wave of high bit rate modulation all the way is converted to and simulate all the way base
Band signal is transmitted to originator AFE (analog front end)：Combiner is by first via digital radio signal and the second railway digital radiofrequency signal
Export after merging into digital radio signal all the way；The digital radio signal all the way that combiner is exported is modulated to high all the way by manipulator
Export after speed digital modulation pulse wave；High bit rate modulation pulse wave is converted to and transmit after analog baseband signal all the way by digital to analog converter
To originator AFE (analog front end).
S5024, start AFE (analog front end) by digital radio signal processing module change gained analog baseband signal all the way to
Receiver sends.
S503, receiver are converted to the analog baseband signal all the way for receiving after high bit rate modulation pulse wave all the way, first
High bit rate modulation pulse wave demodulation is made as into first via digital radio signal and the second railway digital radiofrequency signal, then respectively will
The first via digital radio signal and the second railway digital radiofrequency signal down coversion and be mapped as first via digital baseband signal and
Second railway digital baseband signal.
Specifically, receiver is converted to the analog baseband signal all the way for receiving after high bit rate modulation pulse wave all the way,
High bit rate modulation pulse wave demodulation is made as into first via digital radio signal and the second railway digital radiofrequency signal first, then is distinguished
By the first via digital radio signal and the second railway digital radiofrequency signal down coversion and it is mapped as first via digital baseband signal
With the second railway digital baseband signal can be：Receiving end AFE (analog front end) receives the letter of ABB all the way that originator AFE (analog front end) sends
Number；The analog baseband signal all the way that receiving end AFE (analog front end) is received first is converted to all the way by receiving end digital radio signal processing module
High bit rate modulation pulse wave, then first via digital radio signal and the second railway digital radiofrequency signal that demodulation is made as merging；The
One digital down converter is by first via digital radio signal down coversion and is mapped as first via digital baseband signal；Under second numeral
Converter is by the second railway digital radiofrequency signal down coversion and is mapped as the second railway digital baseband signal.
Further, the simulation base all the way that the receiving end AFE (analog front end) is received by receiving end digital radio signal processing module
Band signal is first converted to high bit rate modulation pulse wave all the way, then the first via digital radio signal and second that demodulation is made as merging
Railway digital radiofrequency signal can be：The analog baseband signal all the way that receiving end AFE (analog front end) is received is converted to one by analog-digital converter
Road high bit rate modulation pulse wave；The pulse wave pulse width solution of high bit rate modulation all the way that analog-digital converter is exported by demodulator
Manipulator is demodulated into the first via digital radio signal of merging and the second railway digital radiofrequency signal；Demodulator is exported by power splitter
Merging first via digital radio signal and the second railway digital radiofrequency signal two equal portions are divided into power and first is delivered to respectively
Digital down converter and the second digital down converter.
S504, receiving end deserializer by first via digital baseband signal and the second railway digital baseband signal interleave restructuring with
It is reduced to CPRI signals.
The processing system and method for the common public radio interface information for being provided to the embodiment of the present invention above is carried out
It is discussed in detail, specific case used herein is set forth to the principle of the present invention and embodiment, above example
Illustrate that being only intended to help understands the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art, according to
According to the thought of the present invention, will change in specific embodiments and applications, in sum, this specification content
Should not be construed as limiting the invention.
Claims (10)
1. a kind of processing system of common public radio interface information, it is characterised in that the system includes：
Originator deserializer, for isolate from common public radio interface CPRI signal first via digital baseband signal and
Second railway digital baseband signal, the first via digital baseband signal include client layer data flow IQ data, second way
Word baseband signal includes general information stream, and the general information stream converges control management level C＆M data flow and synchronous data flow；
Transmitter, for distinguishing demapping up-conversion by the first via digital baseband signal and the second railway digital baseband signal
After for first via digital radio signal and the second railway digital radiofrequency signal, high bit rate modulation pulse wave all the way is successively modulated to, then
Analog baseband signal all the way is converted to, and is sent to receiver via originator AFE (analog front end)；
Receiver, for the analog baseband signal all the way for receiving is converted to after high bit rate modulation pulse wave all the way, first by institute
State the demodulation of high bit rate modulation pulse wave and be made as first via digital radio signal and the second railway digital radiofrequency signal, then respectively will be described
First via digital radio signal and the second railway digital radiofrequency signal down coversion are simultaneously mapped as first via digital baseband signal and second
Railway digital baseband signal；
Receiving end deserializer, for by the first via digital baseband signal and the second railway digital baseband signal interleave restructuring with
It is reduced to the CPRI signals.
2. the system as claimed in claim 1, it is characterised in that the transmitter includes：
First digital up converter, for up-converting to the first railway digital by the first via digital baseband signal after the demapping
Radiofrequency signal；
Second digital up converter, for up-converting to the second railway digital by the second railway digital baseband signal after the demapping
Radiofrequency signal；
Originator digital radio signal processing module, for by the first via digital radio signal and the second railway digital radiofrequency signal
After being modulated to high bit rate modulation pulse wave all the way, the pulse wave of high bit rate modulation all the way is converted to into analog baseband signal all the way
Transmit to originator AFE (analog front end)；
Originator AFE (analog front end), the analog baseband signal all the way for digital radio signal processing module to be changed gained are connect to described
Receipts machine sends.
3. it is as claimed in claim 2, it is characterised in that the originator digital radio signal processing module includes：
Combiner, for merging into digital RF all the way by the first via digital radio signal and the second railway digital radiofrequency signal
Export after signal；
Manipulator, for the digital radio signal all the way that the combiner is exported is modulated to after high bit rate modulation pulse wave all the way
Output；
Digital to analog converter, for transmitting to described after the high bit rate modulation pulse wave is converted to analog baseband signal all the way
End AFE (analog front end).
4. the system as claimed in claim 1, it is characterised in that the receiver includes：
Receiving end AFE (analog front end), for receiving the analog baseband signal all the way that the originator AFE (analog front end) sends；
Receiving end digital radio signal processing module, for the analog baseband signal elder generation all the way for receiving the receiving end AFE (analog front end)
High bit rate modulation pulse wave all the way is converted to, then first via digital radio signal and the second railway digital that demodulation is made as merging are penetrated
Frequency signal；
First digital down converter, for by first via digital radio signal down coversion and be mapped as the first via digital baseband letter
Number；
Second digital down converter, for by the second railway digital radiofrequency signal down coversion and be mapped as the second railway digital base band letter
Number.
5. system as claimed in claim 4, it is characterised in that the receiving end digital radio signal processing module includes：
Analog-digital converter, for being converted to high speed number all the way by the analog baseband signal all the way that the receiving end AFE (analog front end) is received
Word modulates pulse wave；
Demodulator, for the pulse wave pulse width demodulator of high bit rate modulation all the way for exporting the analog-digital converter
It is demodulated into first via digital radio signal and the second railway digital radiofrequency signal of merging；
Power splitter, for the first via digital radio signal of merging that exports the demodulator and the second railway digital radio frequency letter
Number two equal portions are divided into power and first digital down converter and the second digital down converter is delivered to respectively.
6. a kind of processing method of common public radio interface information, it is characterised in that methods described includes：
Originator deserializer isolates first via digital baseband signal and second from common public radio interface CPRI signal
Railway digital baseband signal, the first via digital baseband signal include client layer data flow IQ data, the second railway digital base
Band signal includes general information stream, and the general information stream converges control management level C＆M data flow and synchronous data flow；
The first via digital baseband signal and the second railway digital baseband signal demapping are up-converted to two by transmitter respectively
After railway digital radiofrequency signal, high bit rate modulation pulse wave all the way is successively modulated to, is reconverted into analog baseband signal all the way, and Jing
Sent from originator AFE (analog front end) to receiver；
The receiver is converted to the analog baseband signal all the way for receiving after high bit rate modulation pulse wave all the way, first will be described
The demodulation of high bit rate modulation pulse wave is made as first via digital radio signal and the second railway digital radiofrequency signal, then respectively by described the
Digital radio signal and the second railway digital radiofrequency signal down coversion it is mapped as first via digital baseband signal and the second tunnel all the way
Digital baseband signal；
The first via digital baseband signal and the second railway digital baseband signal are interleave restructuring to reduce by receiving end deserializer
For the CPRI signals.
7. method as claimed in claim 6, it is characterised in that the transmitter is by the first via digital baseband signal and
Two railway digital baseband signals demapping after up-converting to first via digital radio signal and the second railway digital radiofrequency signal respectively,
Successively be modulated to high bit rate modulation pulse wave all the way, be reconverted into analog baseband signal all the way, and via originator AFE (analog front end) to
Receiver sends to be included：
First via digital baseband signal after the demapping is up-converted to first via digital RF by the first digital up converter
Signal；
The second railway digital baseband signal after the demapping is up-converted to the second railway digital radio frequency by the second digital up converter
Signal；
Originator digital radio signal processing module is by the first via digital radio signal and the second railway digital rf-signal modulation
After for high bit rate modulation pulse wave all the way, the pulse wave of high bit rate modulation all the way is converted to into analog baseband signal transmission all the way
To originator AFE (analog front end)；
Digital radio signal processing module is changed the analog baseband signal all the way of gained to the receiver by originator AFE (analog front end)
Send.
8. method as claimed in claim 7, it is characterised in that the originator AFE (analog front end) is by digital radio signal processing module
The analog baseband signal all the way of conversion gained sends to the receiver and includes：
The first via digital radio signal and the second railway digital radiofrequency signal are merged into digital radio signal all the way by combiner
After export；
The digital radio signal all the way that the combiner is exported is modulated to export after high bit rate modulation pulse wave all the way by manipulator；
Digital to analog converter is transmitted after the high bit rate modulation pulse wave is converted to analog baseband signal all the way to the originator mould
Intend front end.
9. method as claimed in claim 6, it is characterised in that the analog baseband signal all the way for receiving is turned by the receiver
After being changed to high bit rate modulation pulse wave all the way, high bit rate modulation pulse wave demodulation is made as into two-way digital radio signal first,
By the two-way digital radio signal down coversion and it is mapped as first via digital baseband signal and the second railway digital base band respectively again
Signal, including：
Receiving end AFE (analog front end) receives the analog baseband signal all the way that the originator AFE (analog front end) sends；
The analog baseband signal all the way that the receiving end AFE (analog front end) is received first is changed by receiving end digital radio signal processing module
For high bit rate modulation pulse wave all the way, then demodulation is made as into the first via digital radio signal and the second railway digital radio frequency letter that merge
Number；
First digital down converter is by first via digital radio signal down coversion and is mapped as first via digital baseband signal；
Second digital down converter is by the second railway digital radiofrequency signal down coversion and is mapped as the second railway digital baseband signal.
10. method as claimed in claim 9, it is characterised in that the receiving end digital radio signal processing module is by the receipts
The analog baseband signal all the way that end AFE (analog front end) is received first is converted to high bit rate modulation pulse wave all the way, then demodulation is made as closing
And first via digital radio signal and the second railway digital radiofrequency signal, including：
The analog baseband signal all the way that the receiving end AFE (analog front end) is received is converted to high-speed figure all the way and is adjusted by analog-digital converter
Pulse wave processed；
The pulse wave pulse width of the high bit rate modulation all the way demodulator demodulation that the analog-digital converter is exported by demodulator
First via digital radio signal and the second railway digital radiofrequency signal for merging；
The first via digital radio signal of the merging that the demodulator is exported by power splitter and the second railway digital radiofrequency signal with
Power is divided into two equal portions and delivers to first digital down converter and the second digital down converter respectively.
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| CN201610939894.XA CN106534006A (en) | 2016-10-25 | 2016-10-25 | System and method for processing common public radio interface information |
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| CN101282349A (en) * | 2007-04-02 | 2008-10-08 | 华为技术有限公司 | Method and system for promoting application of CPRI interface, processing module for CPRI interface |
| CN102136862A (en) * | 2011-01-30 | 2011-07-27 | 华为技术有限公司 | Base station device, communication system and communication method |
| CN102217412A (en) * | 2010-11-01 | 2011-10-12 | 华为技术有限公司 | Method and apparatus for transmitting cpri signals via coaxial cable |
| WO2016106584A1 (en) * | 2014-12-30 | 2016-07-07 | 华为技术有限公司 | Wireless fronthaul passive optical network (pon) system, optical network device and method |
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|---|---|---|---|---|
| CN101282349A (en) * | 2007-04-02 | 2008-10-08 | 华为技术有限公司 | Method and system for promoting application of CPRI interface, processing module for CPRI interface |
| CN102217412A (en) * | 2010-11-01 | 2011-10-12 | 华为技术有限公司 | Method and apparatus for transmitting cpri signals via coaxial cable |
| CN102136862A (en) * | 2011-01-30 | 2011-07-27 | 华为技术有限公司 | Base station device, communication system and communication method |
| WO2016106584A1 (en) * | 2014-12-30 | 2016-07-07 | 华为技术有限公司 | Wireless fronthaul passive optical network (pon) system, optical network device and method |
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