CN109412655A - Distributing antenna system, its I/Q data adaptive device and method - Google Patents
Distributing antenna system, its I/Q data adaptive device and method Download PDFInfo
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- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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Abstract
This application involves a kind of distributing antenna system and its I/Q data adaptive device and methods, including downlink I/Q data adaptive device and uplink IQ adaptive device.Wherein, downlink I/Q data adaptive device includes downlink I/Q data adaptation processing module, the first solution frame module, first switch selecting module, the first resampling module and the first framing module；Uplink I/Q data adaptive device includes uplink I/Q data adaptation processing module, the second solution frame module, second switch selecting module, the second resampling module and the second framing module；And downlink I/Q data adaptive device and uplink I/Q data adaptive device can be applied in expanding element EU.By introducing resampling module, from different access unit AU obtain different channels, different frequency range, different bandwidth, different sample rate I/Q data, after I/Q data adaptation and resampling processing, the I/Q data of special modality, special frequency channel, specific bandwidth, particular sample rate is sent in far-end unit RU, thus the disposition flexibility of expanding digital DAS.
Description
Technical field
This application involves fields of communication technology, more particularly to a kind of distributing antenna system, its I/Q data adaptive device
And method.
Background technique
With the development of communication technology, communications band is more and more, bandwidth is more and more wider, antenna amount is more and more, is
Better progress signal covering, digitized distributing antenna system (DAS) using more and more extensive.
Digital DAS system mainly includes three parts, respectively access unit (AU), expanding element (EU) and far-end unit
(RU).Firstly, by way of data access or RF coupling signal, obtaining digitized base station information source in access unit；
Then, in expanding element, base station information source is transmitted using optical fiber or cable using optical fiber or network cable transmission to expanding element
Into multiple far-end units；Finally, signal is converted to radiofrequency signal again to carry out MPS process in far-end unit.
As access unit and far-end unit device category are more and more, the sample rate relationship of I/Q data becomes increasingly complex,
The I/Q data of access unit is only simply distributed to far-end unit by expanding element, is no longer satisfied digital DAS technology hair
The demand of exhibition.
Summary of the invention
Based on this, it is necessary to not be able to satisfy digital DAS skill for the expanding element of distributing antenna system in traditional technology
The technical issues of art growth requirement, provides a kind of distributing antenna system, its I/Q data adaptive device and method.
On the one hand, the embodiment of the present invention provides a kind of downlink I/Q data adaptive device for distributing antenna system, should
Device includes:
Downlink I/Q data adaptation processing module, for reading access unit information from access unit and being read from far-end unit
Far-end unit information；
First solution frame module, is used for according to the access unit information, more than first will obtained by the access unit
Channel serial I/Q data stream carries out frame decoding to obtain the first single channel Parallel I Q data stream；
First switch selecting module, for establishing and corresponding to according to the access unit information and the far-end unit information
Data link to obtain corresponding first single channel Parallel I Q data stream；
First resampling module, for receiving the corresponding first single channel Parallel I Q data stream, and by the correspondence
The first single channel Parallel I Q data stream carry out resampling to obtain the second single channel Parallel I Q data stream；
First framing module, for according to the far-end unit information, the second single channel that the resampling is obtained to be simultaneously
Row I/Q data stream carries out framing to obtain the second multi-channel serial I/Q data stream.
On the one hand, the embodiment of the present invention also provides a kind of uplink I/Q data adaptive device for distributing antenna system,
Include:
Uplink I/Q data adaptation processing module, for reading access unit information from access unit and being read from far-end unit
Far-end unit information；
Second solution frame module, is used for according to the far-end unit information, and the third obtained by the far-end unit is more
Channel serial I/Q data stream carries out frame decoding to obtain third single channel Parallel I Q data stream；
Second resampling module for receiving the obtained third single channel Parallel I Q data stream, and is obtained to described
Third single channel Parallel I Q data stream carry out resampling to obtain the 4th single channel Parallel I Q data stream；
Second switch selecting module, for establishing and corresponding to according to the access unit information and the far-end unit information
Data link to obtain corresponding 4th single channel Parallel I Q data stream；
Second framing module is used for according to the access unit information, by the corresponding 4th single channel Parallel I Q number
Framing is carried out according to stream to obtain the 4th multi-channel serial I/Q data stream.
Another aspect, the embodiment of the present invention provide a kind of distributing antenna system, comprising: access unit and the access
The expanding element of unit communication connection and the far-end unit communicated to connect with the expanding element；The expanding element includes above-mentioned
Downlink I/Q data adaptive device described in any embodiment and any of the above-described uplink I/Q data adaptation dress as described in the examples
It sets.
Another aspect, the embodiment of the present invention provide a kind of downlink I/Q data adaptation method for distributing antenna system,
This method comprises:
Access unit information is read from access unit and reads far-end unit information from far-end unit；
According to the access unit information, the first multi-channel serial I/Q data stream obtained by access unit is solved
Frame is to obtain the first single channel Parallel I Q data stream；
According to the access unit information and the far-end unit information, corresponding data link is established to obtain pair
The the first single channel Parallel I Q data stream answered；
Resampling is carried out to obtain the second single channel Parallel I Q number to the corresponding first single channel Parallel I Q data stream
According to stream；
According to the far-end unit information, the second single channel Parallel I Q data stream that the resampling is obtained carries out framing
To obtain the second multi-channel serial I/Q data stream.
On the other hand, the embodiment of the present invention provides a kind of uplink I/Q data adaptation method for distributing antenna system,
Include:
Access unit information is read from access unit and reads far-end unit information from far-end unit；
According to the far-end unit information, the third multi-channel serial I/Q data obtained by the far-end unit is flowed into
Row frame decoding is to obtain third single channel Parallel I Q data stream；
Resampling is carried out to obtain the 4th single channel Parallel I Q number to the obtained third single channel Parallel I Q data stream
According to stream；
According to the access unit information and the far-end unit information, corresponding data link is established to obtain pair
The 4th single channel Parallel I Q data stream answered；
According to the access unit information, the corresponding 4th single channel Parallel I Q data stream is subjected to framing to obtain
4th multi-channel serial I/Q data stream.
Any one technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
By introducing I/Q data resampling mechanism, realize between uplink I/Q data and the sample rate of downlink I/Q data
Conversion can carry out I/Q data adaptation to different types of access unit and far-end unit, to improve the deployment of digital DAS
Flexibility.
Detailed description of the invention
Fig. 1 a to Fig. 1 c is the structural block diagram of digitized distributing antenna system；
Fig. 1 d is the structural block diagram of distributing antenna system provided by the invention；
Fig. 2 a is the structural block diagram of downlink I/Q data adaptive device in one embodiment；
Fig. 2 b is the structural schematic diagram of downlink I/Q data adaptive device in one embodiment；
Fig. 3 a is the structural block diagram of downlink I/Q data adaptive device in one embodiment；
Fig. 3 b is the structural schematic diagram of downlink I/Q data adaptive device in one embodiment；
Fig. 4 is the structural schematic diagram of downlink I/Q data adaptive device in one embodiment；
Fig. 5 a is the structural block diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 5 b is the structural schematic diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 6 a is the structural block diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 6 b is the structural schematic diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 7 a is the structural block diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 7 b is the structural schematic diagram of uplink I/Q data adaptive device in one embodiment；
Fig. 8 is the flow diagram of downlink I/Q data adaptation method in one embodiment；
Fig. 9 is the flow diagram of downlink I/Q data adaptation method in one embodiment；
Figure 10 is the flow diagram of uplink I/Q data adaptation method in one embodiment；
Figure 11 is the flow diagram of uplink I/Q data adaptation method in one embodiment.
Specific embodiment
As described in background, as access unit and far-end unit device category are more and more, user is to digital DAS
Application flexibility requirement it is also higher and higher.A referring to Figure 1, digital DAS system mainly include three parts, are respectively connect
Enter unit AU, expanding element EU and far-end unit RU.
B referring to Figure 1, access unit AU are obtained by way of RF coupling (RF) or Digital Access (digital)
To digitized I/Q data stream, wherein S1 is expressed as the 1st channel I/Q data, and S2 is expressed as the 2nd channel I/Q data, and Sk is expressed as
Kth channel I/Q data, the information such as the corresponding independent frequency range of the I/Q data in every channel, sample rate and bandwidth.DefinitionIt is sent to whole I/Q datas of expanding element EU for access unit AU, expanding element EU is being got
After the I/Q data of access unit AU, it is distributed to corresponding far-end unit RU.It is expressed as expanding element
EU is sent to the I/Q data of the 1st far-end unit RU,It is expressed as expanding element EU and is sent to n-th
The I/Q data of a far-end unit RU,It is expressed as expanding element EU and is sent to all far-end unit RU's
I/Q data.Generally,It isSubset, i.e.,Therefore, far-end unit RU only needs the IQ simply access unit AU
Data distribution gives far-end unit RU.It is understood that the I/Q data stream in Fig. 1 b be it is two-way, for downlink signal,
Data flow are as follows: BS → AU → EU → RU, for uplink signal, data flow are as follows: RU → EU → AU → BS.
But with the development of wireless communication technique, digital DAS not only need for single operator the network coverage and
The network coverage of more operators, it is also necessary to for the network coverage of SISO system and the network coverage of mimo system, with greater need for
The network coverage for multiband, multi-standard signal.Therefore the sample rate relationship of I/Q data becomes increasingly complex, and expanding element EU is only
It is that the I/Q data of access unit is simply distributed to far-end unit, is no longer satisfied the demand of digital DAS technology development.For
Adapt to the demand of digital DAS technology development, the present invention proposes a kind of distributing antenna system, its I/Q data adaptive device and side
Method can carry out the I/Q data adaptation between access unit AU and far-end unit RU, expanding element EU is enabled to be compatible with difference
The access unit AU and far-end unit RU of type, while also can easily support new access unit AU equipment and new far-end unit
The access of RU equipment.
C referring to Figure 1, different access unit AU equipment obtain the I/Q data of different base station BS equipment, access unit AU
It uniformly sends I/Q data to expanding element EU, I/Q data adaptation is then carried out by expanding element EU, then the IQ after adaptation
Data are sent in corresponding far-end unit RU.DefinitionThe I/Q data of EU is given for all AU, is definedThe data of far-end unit RU are given for the 1st access unit AU, are definedThe data of far-end unit RU are given for m-th of access unit AU.Generally, in general number
In word DAS topological structure,No longer it isSubset, i.e.,Therefore, d referring to Figure 1, expanding element EU cannot be simply
The I/Q data of access unit AU is distributed to far-end unit RU, but needs to introduce I/Q data adaptive device (IQ Adapter),
After carrying out data adaptation by I/Q data adaptive device, the I/Q data of access unit AU could be sent to far-end unit RU.
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, Fig. 2 a is referred to, it is suitable to provide a kind of downlink I/Q data for distributing antenna system
With device, which includes that downlink I/Q data adaptation processing module 210, first solves frame module 220, first switch selecting module
230, the first resampling module 240 and the first framing module 250.
Specifically, downlink I/Q data adaptation processing module 210, for reading access unit information from access unit and from remote
End unit reads far-end unit information.The first solution frame module being connect with the output end of downlink I/Q data adaptation processing module 210
220, for according to access unit information, by the first multi-channel serial I/Q data stream obtained by access unit carry out frame decoding with
Obtain the first single channel Parallel I Q data stream.The first switch selecting module 230 being connect with the first solution 220 output end of frame module,
For according to access unit information and far-end unit information, establishing corresponding data link to obtain corresponding first single-pass
Road Parallel I Q data stream.The first resampling module 240 being connect with 230 output end of first switch selecting module, for reception pair
The the first single channel Parallel I Q data stream answered, and corresponding first single channel Parallel I Q data stream is subjected to resampling to obtain the
Two single channel Parallel I Q data streams.The first framing module 250 connecting with 240 output end of the first resampling module is used for basis
Far-end unit information, the second single channel Parallel I Q data stream that resampling is obtained carry out framing to obtain the second multi-channel serial
I/Q data stream.
Illustratively, Fig. 2 b is referred to, the I/Q data adaptive device of downlink includes m first solution frame module 220
(Deframer), 1 first switch selecting module 230 (Switch), t*n the first resampling modules 240 (Resampler), n
A first framing module 250 (Framer) and 1 downlink I/Q data adaptation processing module 210.Wherein, it is supplied to far-end unit RU
Downlink I/Q data have t channel.Specifically, the first solution frame module 220 receives the first multichannel by access unit AU
Serial i Q data stream is decomposed into the first single channel Parallel I Q data stream.According to the channel information in access unit information and distally
Channel information in unit information, downlink I/Q data adaptation processing module 210 controls first switch selecting module 230 will be corresponding
Channel is attached and establishes corresponding data link to obtain corresponding first single channel Parallel I Q data stream, that is, selects
Need to be sent to the first single channel Parallel I Q data stream of far-end unit RU.Corresponding first single channel Parallel I Q data stream is sent out
It send to corresponding first resampling module 240.According to the sample rate and frequency range in far-end unit information, the first resampling module
Corresponding first single channel Parallel I Q data stream is carried out resampling by 240 to be handled to obtain the second single channel Parallel I Q data stream,
And it is sent to the first framing module 250.According to the channel information in far-end unit information, the first framing module 250 is to resampling
The second obtained single channel Parallel I Q data stream is merged to obtain the second multi-channel serial I/Q data stream, and is sent to correspondence
Far-end unit RU in.It is understood that downlink I/Q data adaptation processing module 210 is opened with the first solution frame module 220, first
Selecting module 230, the first resampling module 240 and the connection of the first framing module 250 are closed, work completing to control it
The whole process of downlink I/Q data adaptation.
Continuing with b referring to fig. 2,It is expressed as all access unit AU and gives expansion
Open up the downlink I/Q data stream of unit EU.Wherein,It is expressed as the 1st access unit
AU is sent to the first multi-channel serial I/Q data stream of expanding element EU,
It is expressed as the first multi-channel serial I/Q data stream that m-th of access unit AU is sent to expanding element EU.It decomposes, obtains several by corresponding first solution frame module Deframer_d1
Road the first single channel Parallel I Q data stream, respectively S11_d, S12_d ..., S1k_d.It is decomposed by corresponding first solution frame module Deframer_dm, if obtaining
Main line the first single channel Parallel I Q data stream, respectively Sm1_d, Sm2_d ..., Smk_d.
Continuing with b referring to fig. 2, downlink I/Q data adaptation processing module 210 controls first switch selecting module 230 and will correspond to
Channel be attached and establish corresponding data link to select to need to be sent to the first single channel of far-end unit RU
Parallel I Q data stream.It is expressed as needing to be sent to the IQ of all far-end unit RU
Data flow.For the I/Q data stream for needing to be sent to the 1st far-end unit RU,For the I/Q data stream for needing to be sent to n-th of far-end unit RU.
Continuing with b referring to fig. 2, if needing to be sent to main line the first single channel Parallel I Q data of the 1st far-end unit RU
Stream is W11_d, W12_d ..., W1t_d, if needing to be sent to main line the first single channel Parallel I Q number of n-th of far-end unit RU
According to stream be Wn1_d, Wn2_d ..., Wnt_d.Every the first single channel of road Parallel I Q data stream is correspondingly arranged on a first switch choosing
Module Resampler is selected, for example, the first single channel Parallel I Q data stream W11_d, which is sent to Resampler_d11, carries out resampling
Processing, obtains the second single channel Parallel I Q data stream O11_d.I/Q data flow table after resampling is shown asWherein,It is single to be expressed as extension
First EU is sent to the second single channel Parallel I Q data stream of the 1st far-end unit RU,It is expressed as the second single-pass that expanding element EU gives n-th of far-end unit RU
Road Parallel I Q data stream.
It should be noted that AU Message is expressed as the information that expanding element EU is read from access unit AU in Fig. 2 b,
The information such as the corresponding channel of I/Q data stream, frequency range, sample rate, the bandwidth that are sent including access unit AU.RU Message is to expand
The information that exhibition unit EU is read from far-end unit RU, the channel of the I/Q data including needing to be sent to far-end unit RU, is adopted at frequency range
The information such as sample rate, bandwidth.
Above-mentioned downlink I/Q data adaptive device includes downlink I/Q data adaptation processing module, the first solution frame module, first opens
Selecting module, the first resampling module and the first framing module are closed, which can be applied and extended
In unit EU.By introducing the first resampling module, in the downlink, can be obtained from different access unit AU different logical
Road, different frequency range, different bandwidth, different sample rate I/Q data stream, after I/Q data adaptation and resampling processing, specific
Channel, special frequency channel, specific bandwidth, particular sample rate I/Q data be sent in far-end unit RU.And it realizes different logical
I/Q data stream between road, different frequency range, different sample rates, the access unit AU equipment of different bandwidth and far-end unit RU equipment
Automatic adaptation.
In one embodiment, Fig. 3 a is referred to, downlink I/Q data adaptive device further includes the first filter factor memory
310.First filter factor memory 310, for first filter coefficient needed for storing the first resampling module 240.First
Filter factor memory 310 is connect with downlink I/Q data adaptation processing module 210, and downlink I/Q data adaptation processing module 210 is also
For determining the first filter coefficient of the first resampling module according to far-end unit information.First resampling module 240 is used
According to first filter coefficient by corresponding first single channel Parallel I Q data stream carry out resampling to obtain the second single channel
Parallel I Q data stream.
Specifically, it in order to which the I/Q data stream of access unit is sent to corresponding far-end unit, needs to open by first
The the first single channel Parallel I Q data stream for closing module 230 carries out resampling.Firstly, downlink I/Q data adaptation processing module 210 can
With according in far-end unit information sample rate and bandwidth from the first filter factor memory 310 search it is corresponding first filtering be
Number.Secondly, the first resampling module 240 is according to the first filter coefficient found to the by first switch module 230
One single channel Parallel I Q data stream carries out resampling, to obtain needing to be sent to the second single channel Parallel I Q of far-end unit RU
Data flow.
Illustratively, Fig. 3 b is referred to, the I/Q data adaptive device of downlink includes M first solution frame module 220
(Deframer), 1 first switch selecting module 230 (Switch), T*N the first resampling modules 240 (Resampler), N
A first framing module 250 (Framer), 1 downlink I/Q data adaptation processing module 210 and 1 the first filter factor memory
310。
Wherein, the first solution frame module 220 receives the first multi-channel serial I/Q data stream by access unit AU, is decomposed into
First single channel Parallel I Q data stream.Believed according to the channel information in access unit information and the channel in far-end unit information
Breath, downlink I/Q data adaptation processing module 210 control first switch selecting module 230 and corresponding channel are attached and are established
Corresponding data link is to obtain corresponding first single channel Parallel I Q data stream, i.e., selection needs to be sent to far-end unit
The first single channel Parallel I Q data stream of RU.Corresponding first single channel Parallel I Q data stream is sent to corresponding first to adopt again
Egf block 240.According to the sample rate and frequency range in far-end unit information, downlink I/Q data adaptation processing module 210 can be determined
The first filter coefficient of first resampling module, and it is sent to the first resampling module 240.According to first filter coefficient,
Corresponding first single channel Parallel I Q data stream is carried out resampling processing to obtain the second single channel by the first resampling module 240
Parallel I Q data stream, and it is sent to the first framing module 250.According to the channel information in far-end unit information, the first framing mould
Block 250 merges to obtain the second multi-channel serial I/Q data the second single channel Parallel I Q data stream that resampling obtains
Stream, and be sent in corresponding far-end unit RU.It is understood that downlink I/Q data adaptation processing module 210 and the first solution
Frame module 220, first switch selecting module 230, the first resampling module 240, the first framing module 250 and the first filter factor
Memory 310 connects, and carries out work to control it to complete the whole process of downlink I/Q data adaptation.
Above-mentioned downlink I/Q data adaptive device includes downlink I/Q data adaptation processing module, the first solution frame module, first opens
Selecting module, the first resampling module, the first framing module and the first filter factor memory are closed, it can be the downlink I/Q data
Adaptive device is applied in expanding element EU.It is filtered by introducing the first resampling module, and by needed for resampling module first
Wave device coefficient is stored.In the downlink, different channels, different frequency range, difference can be obtained from different access unit AU
The I/Q data stream of bandwidth, different sample rates, after I/Q data adaptation and resampling processing, special modality, special frequency channel, spy
Determine bandwidth, the I/Q data of particular sample rate is sent in far-end unit RU.And realize different channels, different frequency range, difference
The automatic adaptation of I/Q data stream between sample rate, the access unit AU equipment of different bandwidth and far-end unit RU equipment.
In one embodiment, continuing with b and Fig. 3 b referring to fig. 2, when distributing antenna system include m access unit and
N far-end unit, the quantity of the first solution frame module are m, and the quantity of the first framing module is n；If being transferred to each far-end unit
Downlink I/Q data it is different, and downlink I/Q data have t channel, then the quantity of the first resampling module be n*t.
In one embodiment, continuing with b and Fig. 3 b referring to fig. 2, when distributing antenna system include m access unit and
N far-end unit, the quantity of the first solution frame module are m, and the quantity of the first framing module is n.If being transferred to each far-end unit
Downlink I/Q data it is identical, and downlink I/Q data have t channel, then the quantity of the first resampling module be t.Specifically, it needs
Be sent to each far-end unit RU downlink I/Q data be it is identical, need to be sent to each far-end unit RU downlink I/Q data and return
Collection isThe I/Q data that the road Ze Mei is sent to far-end unit RU is all's
Subset.Since the first resampling module is equipped with corresponding sample rate and frequency range, it is sent under each far-end unit RU if necessary
Row I/Q data is identical.So, Fig. 4 is referred to, the first resampling module can send to each first framing module and adopt again
The second single channel Parallel I Q data stream after sample.In this case, the quantity of the first resampling module is greatly decreased, and not only drops
The low realization difficulty of downlink I/Q data adaptive device, and required resource is greatly reduced, save cost.
In one embodiment, Fig. 5 a is referred to, it is suitable to provide a kind of uplink I/Q data for distributing antenna system
With device, the device include uplink I/Q data adaptation processing module 510, second solve frame module 520, the second resampling module 530,
Second switch selecting module 540 and the second framing module 550.
Specifically, uplink I/Q data adaptation processing module 510, for reading access unit information from access unit and from remote
End unit reads far-end unit information.The second solution frame module being connect with 510 output end of uplink I/Q data adaptation processing module
520, for according to far-end unit information, by the third multi-channel serial I/Q data stream obtained by far-end unit carry out frame decoding with
Obtain third single channel Parallel I Q data stream.The second resampling module 530 connecting with the second solution 520 output end of frame module, is used
Resampling is carried out in the third single channel Parallel I Q data stream that reception obtains, and to obtained third single channel Parallel I Q data stream
To obtain the 4th single channel Parallel I Q data stream.The second switch selecting module being connect with 530 output end of the second resampling module
540, for establishing corresponding data link to obtain the corresponding 4th according to access unit information and far-end unit information
Single channel Parallel I Q data stream.The second framing module 550 connecting with 540 output end of second switch selecting module is used for basis
Corresponding 4th single channel Parallel I Q data stream is carried out framing to obtain the 4th multi-channel serial I/Q data by access unit information
Stream.
Illustratively, Fig. 5 b is referred to, the I/Q data adaptive device of uplink includes n second solution frame module 520
(Deframer), 1 second switch selecting module 540 (Switch), t*n the second resampling modules 530 (Resampler), m
A second framing module 550 (Framer) and 1 510 (IQ Adaption of uplink I/Q data adaptation processing module
Processor).Wherein, the uplink I/Q data that far-end unit RU is sent has t channel.Specifically, the second solution frame module 520
Third multi-channel serial I/Q data stream is received by far-end unit RU, is decomposed into third single channel Parallel I Q data stream, concurrently
Give the second resampling module 530.According to the sample rate and frequency range in access unit information, the second resampling module 530 is to
Three single channel Parallel I Q data streams carry out resampling processing, obtain the 4th single channel Parallel I Q data stream, and be sent to second and open
Close selecting module 540.According to the channel information in access unit information and the channel information in far-end unit information, uplink IQ number
Corresponding channel is attached according to the control of adaptation processing module 510 second switch selecting module 540 and establishes corresponding data
Communication link selects the 4th list for needing to be sent to access unit AU to obtain corresponding 4th single channel Parallel I Q data stream
Channel parallel I/Q data stream.The 4th single channel Parallel I Q data stream for needing to be sent to access unit AU is selected by second switch
Module 540 is sent to the second framing module 550.According to the channel information in far-end unit information, the second framing module 550 need to
The 4th single channel Parallel I Q data stream for being sent to access unit AU is merged to obtain the 4th multi-channel serial I/Q data
Stream, and be sent in corresponding access unit AU.It is understood that uplink I/Q data adaptation processing module 510 and the second solution
Frame module 520, second switch selecting module 540, the second resampling module 530 and the connection of the second framing module 550, to control it
Work is carried out to complete the whole process of uplink I/Q data adaptation.
Continuing with referring to Fig. 5 b,All far-end unit RU are expressed as to be sent to
The uplink I/Q data stream of expanding element EU, whereinFor the 1st far-end unit RU
It is sent to the third multi-channel serial I/Q data stream of expanding element EU,It is n-th
A far-end unit RU is sent to the third multi-channel serial I/Q data stream of expanding element EU.It decomposes, obtains several by corresponding second solution frame module Deframer_u1
Road third single channel Parallel I Q data stream, respectively O11_u, O12_u ..., O1t_u.It decomposes, obtains several by corresponding second solution frame module Deframer_un
Road third single channel Parallel I Q data stream, respectively On1_u, On2_u ..., Ont_u.
Continuing with referring to Fig. 5 b, if needing to be sent to the main line third single channel Parallel I Q data of the 1st access unit AU
Stream is O11_u, O12_u ..., O1t_u, if needing to be sent to the main line third single channel Parallel I Q number of m-th of access unit RU
According to stream be On1_u, On2_u ..., Ont_u.Due to the sample rate and frequency range of the I/Q data of access unit AU and the IQ of far-end unit
The sample rate and frequency range of data are different, and the road Ze Mei third single channel Parallel I Q data stream is correspondingly arranged on a second resampling mould
Block Resampler_u is to obtain the I/Q data that access unit AU needs.If main line third single channel Parallel I Q data stream is O11_
U, O12_u ..., O1t_u, which is respectively sent to corresponding second resampling module Resampler_u, to carry out resampling and handles to obtain the
Four single channel Parallel I Q data stream W11_u, W12_u ..., W1t_u.For example, third single channel Parallel I Q data stream O11_u is sent
Resampling processing is carried out to the second resampling module Resampler_u11, obtains the second single channel Parallel I Q data stream W11_u.
If main line third single channel Parallel I Q data stream be On1_u, On2_u ..., Ont_u is respectively sent to corresponding second resampling
Module Resampler_u carries out resampling and handles to obtain the 4th single channel Parallel I Q data stream Wn1_u, Wn2_u ..., Wnt_u.
It is carried out at resampling for example, third single channel Parallel I Q data stream On1_u is sent to the second resampling module Resampler_un1
Reason, obtains the 4th single channel Parallel I Q data stream Wn1_u.
Continuing with referring to Fig. 5 b,It is expressed as sending all far-end unit RU
Uplink I/Q data stream carry out obtained I/Q data stream after resampling processing.
It is expressed as carrying out the I/Q data stream obtained after resampling processing to the I/Q data stream that the 1st far-end unit RU is sent,It is expressed as adopting the I/Q data stream that n-th of far-end unit RU is sent again
The I/Q data stream obtained after sample processing.Uplink I/Q data adaptation processing module 510 controls second switch selecting module 540 and will correspond to
Channel be attached and establish corresponding data link to select to need to be sent to the 4th single channel of access unit AU
Parallel I Q data stream.4th single channel Parallel I Q data stream of selection is sent to second group by second switch selecting module 540
Frame module 550.It is sent to the 4th single channel Parallel I Q data stream of the second framing module Framer_u1, is denoted as: S11_u, S12_
U ..., S1k_u are sent to the 4th single channel Parallel I Q data stream of the second framing module Framer_um, are denoted as: Sm1_u,
Sm2_u,…,Smk_u。
Pass through the second framing continuing with referring to Fig. 5 b, the 4th single channel Parallel I Q data stream S11_u, S12_u ..., S1k_u
Module Framer_u1 merges to obtain4th single channel Parallel I Q data stream
Sm1_u, Sm2_u ..., Smk_u merges to obtain Sm1_u, Sm2_u by the second framing module Framer_um ..., Smk_u.Its
In,It is expressed as the expanding element EU is sent to the 1st access unit AU the 4th
Multi-channel serial I/Q data stream,It is expressed as expanding element EU and is sent to m
The 4th multi-channel serial I/Q data stream of a access unit AU.It is single to be expressed as extension
First EU is sent to the uplink I/Q data stream of all access unit AU.
Above-mentioned uplink I/Q data adaptive device includes uplink I/Q data adaptation processing module, the second solution frame module, second opens
Selecting module, the second resampling module and the second framing module are closed, which can be applied and extended
In unit EU.By introducing the second resampling module, in the uplink, can be obtained from different far-end unit RU different logical
Road, different frequency range, different bandwidth, different sample rate I/Q data stream, after I/Q data adaptation and resampling processing, specific
Channel, special frequency channel, specific bandwidth, particular sample rate I/Q data be sent in access unit AU.And it realizes different logical
I/Q data stream between road, different frequency range, different sample rates, the access unit AU equipment of different bandwidth and far-end unit RU equipment
Automatic adaptation, improve the disposition flexibility of digital DAS.
In one embodiment, Fig. 6 a, uplink I/Q data adaptive device device further include: the second filter factor is deposited are referred to
Reservoir 610, for second filter coefficient needed for storing the second resampling module.I/Q data adaptation processing module 510, is used for
According to access unit information, the second filter coefficient of the second resampling module is determined.Second resampling module 540 is used for root
It is parallel to obtain the 4th single channel that resampling is carried out to obtained third single channel Parallel I Q data stream according to second filter coefficient
I/Q data stream.
Specifically, it in order to the I/Q data stream of far-end unit RU is sent to corresponding access unit AU, needs to by the
The third single channel Parallel I Q data stream of two solution frame modules 520 carries out resampling.Firstly, uplink I/Q data adaptation processing module
510 can according in access unit information sample rate and bandwidth from the second filter factor memory 610 search corresponding second
Filter coefficient.Secondly, the second resampling module 540 is according to the second filter coefficient found to by the second solution frame module
520 third single channel Parallel I Q data stream carries out resampling, to obtain needing to be sent to the 4th single-pass of access unit AU
Road Parallel I Q data stream.
Illustratively, Fig. 6 b is referred to, the I/Q data adaptive device of uplink includes n second solution frame module 520
(Deframer), 1 second switch selecting module 540 (Switch), t*n the second resampling modules 530 (Resampler), m
A second framing module 550 (Framer), 1 uplink I/Q data adaptation processing module 510 (IQ Adaption Processor)
And 1 the second filter factor memory 610.Wherein, the uplink I/Q data that far-end unit RU is sent has t channel.
Wherein, the second solution frame module 520 by far-end unit receives third multi-channel serial I/Q data stream, is decomposed into the
Three single channel Parallel I Q data streams, and it is sent to the second resampling module 530.According to the sample rate and frequency in far-end unit information
Section, uplink I/Q data adaptation processing module 510 can determine the second filter coefficient of the second resampling module 530, and send
To the second resampling module 530.According to second filter coefficient, the second resampling module 530 is by third single channel Parallel I Q number
Resampling processing is carried out to obtain the 4th single channel Parallel I Q data stream according to stream, and is sent to second switch selecting module 540.Root
According to the channel information in access unit information and the channel information in far-end unit information, uplink I/Q data adaptation processing module
Corresponding channel is attached and establishes corresponding data link to obtain by 510 control second switch selecting modules 540
The 4th single channel Parallel I Q data that corresponding 4th single channel Parallel I Q data stream, i.e. selection need to be sent to access unit AU
Stream.The 4th single channel Parallel I Q data stream for needing to be sent to access unit AU is sent to by second switch selecting module 540
Second framing module 550.According to the channel information in far-end unit information, needs are sent to access by the second framing module 550
The 4th single channel Parallel I Q data stream of unit AU is merged to obtain the 4th multi-channel serial I/Q data stream, and is sent to pair
In the access unit AU answered.It is understood that uplink I/Q data adaptation processing module 510 and the second solution frame module 520, second
Selecting module 540, the second resampling module 530, the second framing module 550 and the connection of the second filter factor memory 610 are switched,
Work is carried out to control it to complete the whole process of uplink I/Q data adaptation.
In one embodiment, continuing with referring to Fig. 5 b and Fig. 6 b, when distributing antenna system includes m access unit AU
When with n far-end unit AU, the quantity of the second solution frame module is n, and the quantity of the second framing module is m；If each far-end unit
The uplink I/Q data of transmission is different, and uplink I/Q data has t channel, and the quantity of the second resampling module is n*t.
In one embodiment, continuing with referring to Fig. 5 b and Fig. 6 b, when distributing antenna system include m access list AU and
N far-end unit RU, the quantity of the second solution frame module is n, and the quantity of the second framing module is m；If each far-end unit is sent
Uplink I/Q data it is identical, and uplink I/Q data has t channel, and the quantity of the second resampling module is t.
Further, Fig. 7 a is referred to, the I/Q data adaptive device of the uplink further includes adder mould 710, addition
Device module 710 is used for before resampling, the identical third single channel Parallel I Q data stream identical with sample rate of multichannel frequency range
It adds up, to obtain the 5th single channel Parallel I Q data stream, and is sent to the second resampling module 530.Second resampling mould
Block 530, for receiving cumulative the 5th obtained single channel Parallel I Q data stream, and to cumulative the 5th obtained single channel Parallel I Q
Data flow carries out resampling.
Specifically, each far-end unit RU is sent to the uplink I/Q data frequency range having the same, identical of expanding element EU
Sample rate, and frequency range and the identical uplink I/Q data of sample rate are sent to same access unit AU.What far-end unit RU was sent
Uplink I/Q data collect forThe I/Q data that then every great distance end unit RU is sent is all
It isSubset.Therefore, Fig. 7 b is referred to, uplink I/Q data is before entering the second resampling module 530, same frequency
Section, identical sample rate I/Q data first add up by adder Module 710, be then forwarded to the second resampling module 530
Carry out resampling.Since the second resampling module is equipped with corresponding sample rate and frequency range, if each far-end unit RU needs to send out
The uplink I/Q data sent is identical.So, the second resampling module can send resampling to second switch selecting module 540
The 4th single channel Parallel I Q data stream afterwards.In this case, the quantity of the second resampling module is greatly decreased, and not only reduces
The realization difficulty of uplink I/Q data adaptive device, and required resource is greatly reduced, save cost.It needs to illustrate
It is in second switch selecting module 540, there is the uplink I/Q data for not being fitted to required frequency range and sample rate, for example, far
When the number of channels of end unit is less than the number of channels of access unit, numerical value 0 can be assigned to corresponding data feedback channel.
In one embodiment, a kind of distributing antenna system provided herein, comprising: access unit and access are single
The expanding element of member communication connection and the far-end unit communicated to connect with expanding element；Expanding element includes such as any of the above-described implementation
The uplink I/Q data adaptive device in downlink I/Q data adaptive device and such as above-mentioned any embodiment in example.
In one embodiment, the first filter factor memory and the second filter factor memory are integrated in a filtering system
In number memory.Downlink I/Q data adaptation processing module is integrated in an I/Q data with uplink I/Q data adaptation processing module and is adapted to
In processing module.
In one embodiment, Fig. 8, a kind of downlink IQ number for distributing antenna system provided herein are referred to
According to adaptation method, the downlink I/Q data adaptive device of any of the above-described embodiment can be applied to, method includes the following steps:
S810, access unit information is read from access unit and reads far-end unit information from far-end unit.
S820, according to access unit information, the first multi-channel serial I/Q data stream obtained by access unit is carried out
Frame decoding is to obtain the first single channel Parallel I Q data stream.
S830, according to access unit information and far-end unit information, establish corresponding data link to be corresponded to
The first single channel Parallel I Q data stream.
S840, corresponding first single channel Parallel I Q data stream is subjected to resampling to obtain the second single channel Parallel I Q number
According to stream.
S850, according to far-end unit information, the second single channel Parallel I Q data stream that resampling is obtained carry out framing with
Obtain the second multi-channel serial I/Q data stream.
Above-mentioned downlink I/Q data adaptation method introduces data resampling mechanism, can be easily in different sample rates
Between converted, thus the disposition flexibility of expanding digital DAS.
In one embodiment, refer to Fig. 9, by corresponding first single channel Parallel I Q data stream carry out resampling it
Before, this method further include:
S910, according to far-end unit information, determine the first filter coefficient of the first resampling module.
Resampling is carried out to the first obtained single channel Parallel I Q data stream, comprising:
S920, corresponding first single channel Parallel I Q data stream is carried out to obtain by resampling according to first filter coefficient
Second single channel Parallel I Q data stream.
It should be noted that the specific restriction about above-mentioned downlink I/Q data adaptation method may refer to above under
The restriction of row I/Q data adaptive device, details are not described herein.
In one embodiment, referring to Figure 10, a kind of uplink IQ for distributing antenna system provided herein
Data adaptation methods can be applied to the uplink I/Q data adaptive device of any of the above-described embodiment, method includes the following steps:
S1010, access unit information is read from access unit and reads far-end unit information from far-end unit.
S1020, according to far-end unit information, the third multi-channel serial I/Q data stream obtained by far-end unit is carried out
Frame decoding is to obtain third single channel Parallel I Q data stream.
S1030, resampling is carried out to obtained third single channel Parallel I Q data stream to obtain the 4th single channel Parallel I Q
Data flow.
S1040, according to access unit information and far-end unit information, establish corresponding data link to be corresponded to
The 4th single channel Parallel I Q data stream.
S1050, according to access unit information, corresponding 4th single channel Parallel I Q data stream is subjected to framing to obtain the
Four multi-channel serial I/Q data streams.
Above-mentioned uplink I/Q data adaptation method introduces data resampling mechanism, can be easily in different sample rates
Between converted, thus the disposition flexibility of expanding digital DAS.
In one embodiment, referring to Figure 11, resampling is being carried out to obtained third single channel Parallel I Q data stream
Before, this method further include:
S1110, according to access unit information, determine the second filter coefficient of the second resampling module.
Resampling is carried out to obtained third single channel Parallel I Q data stream, comprising:
S1120, resampling is carried out to obtained third single channel Parallel I Q data stream to obtain according to second filter coefficient
To the 4th single channel Parallel I Q data stream.
It should be noted that the specific restriction about above-mentioned uplink I/Q data adaptation method may refer to above for upper
The restriction of row I/Q data adaptive device, details are not described herein.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (15)
1. a kind of downlink I/Q data adaptive device for distributing antenna system characterized by comprising
Downlink I/Q data adaptation processing module, for reading access unit information from access unit and reading distal end from far-end unit
Unit information；
First solution frame module, is used for according to the access unit information, the first multichannel that will be obtained by the access unit
Serial i Q data stream carries out frame decoding to obtain the first single channel Parallel I Q data stream；
First switch selecting module, for establishing corresponding number according to the access unit information and the far-end unit information
According to communication link to obtain corresponding first single channel Parallel I Q data stream；
First resampling module, for receiving the corresponding first single channel Parallel I Q data stream, and by described corresponding
One single channel Parallel I Q data stream carries out resampling to obtain the second single channel Parallel I Q data stream；
First framing module is used for according to the far-end unit information, the second single channel Parallel I Q that the resampling is obtained
Data flow carries out framing to obtain the second multi-channel serial I/Q data stream.
2. the apparatus according to claim 1, which is characterized in that described device further include:
First filter factor memory, for first filter coefficient needed for storing the first resampling module；
The downlink I/Q data adaptation processing module is also used to determine first resampling according to the far-end unit information
The first filter coefficient of module；
The first resampling module is used for according to the first filter coefficient to the corresponding first single channel Parallel I Q
Data flow carries out resampling to obtain the second single channel Parallel I Q data stream.
3. the apparatus according to claim 1, which is characterized in that when the distributing antenna system includes m access unit
With n far-end unit, the quantity of the first solution frame module is m, and the quantity of first framing module is n；
If the downlink I/Q data for being transferred to each far-end unit is different, and the downlink I/Q data has t channel, described
The quantity of first resampling module is n*t.
4. the apparatus according to claim 1, which is characterized in that when the distributing antenna system includes m access unit
With n far-end unit, the quantity of the first solution frame module is m, and the quantity of first framing module is n；
If the downlink I/Q data for being transferred to each far-end unit is identical, and the downlink I/Q data has t channel, then described the
The quantity of one resampling module is t.
5. a kind of uplink I/Q data adaptive device for distributing antenna system characterized by comprising
Uplink I/Q data adaptation processing module, for reading access unit information from access unit and reading distal end from far-end unit
Unit information；
Second solution frame module, is used for according to the far-end unit information, the third multichannel that will be obtained by the far-end unit
Serial i Q data stream carries out frame decoding to obtain third single channel Parallel I Q data stream；
Second resampling module, for receiving the obtained third single channel Parallel I Q data stream, and to the obtained
Three single channel Parallel I Q data streams carry out resampling to obtain the 4th single channel Parallel I Q data stream；
Second switch selecting module, for establishing corresponding number according to the access unit information and the far-end unit information
According to communication link to obtain corresponding 4th single channel Parallel I Q data stream；
Second framing module is used for according to the access unit information, by the corresponding 4th single channel Parallel I Q data stream
Framing is carried out to obtain the 4th multi-channel serial I/Q data stream.
6. device according to claim 5, which is characterized in that described device further include:
Second filter factor memory, for second filter coefficient needed for storing the second resampling module；
The I/Q data adaptation processing module, for determining the second resampling module according to the access unit information
Second filter coefficient；
The second resampling module, for according to the second filter coefficient to the obtained third single channel Parallel I Q
Data flow carries out resampling to obtain the 4th single channel Parallel I Q data stream.
7. device according to claim 5, which is characterized in that when the distributing antenna system includes m access unit
When with n far-end unit, the quantity of the second solution frame module is n, and the quantity of second framing module is m；
If the uplink I/Q data that each far-end unit is sent is different, and the uplink I/Q data has a t channel, described the
The quantity of two re-sampling module is n*t.
8. device according to claim 5, which is characterized in that when the distributing antenna system includes m access unit
With n far-end unit, the quantity of the second solution frame module is n, and the quantity of second framing module is m；
If the uplink I/Q data that each far-end unit is sent is identical, and the uplink I/Q data has t channel, then described second
The quantity of resampling module is t.
9. device according to claim 8, which is characterized in that further include adder Module, the adder Module is used for
Before the resampling, the identical third single channel Parallel I Q data stream identical with sample rate of multichannel frequency range added up with
The 5th single channel Parallel I Q data stream is obtained, and is sent to the second resampling module；
The second resampling module, for receiving cumulative the 5th obtained single channel Parallel I Q data stream, and to described
Cumulative the 5th obtained single channel Parallel I Q data stream carries out resampling.
10. a kind of distributing antenna system characterized by comprising access unit, the expansion with access unit communication connection
Open up unit and the far-end unit with expanding element communication connection；The expanding element includes such as any one of Claims 1-4
The downlink I/Q data adaptive device and such as described in any item uplink I/Q data adaptive devices of claim 5 to 9.
11. system according to claim 10, which is characterized in that the first filter factor memory and second filter
Wave coefficient memory is integrated in a filter factor memory；
It is suitable that the downlink I/Q data adaptation processing module and the uplink I/Q data adaptation processing module are integrated in an I/Q data
With in processing module.
12. a kind of downlink I/Q data adaptation method for distributing antenna system characterized by comprising
Access unit information is read from access unit and reads far-end unit information from far-end unit；
According to the access unit information, by the first multi-channel serial I/Q data stream obtained by access unit carry out frame decoding with
Obtain the first single channel Parallel I Q data stream；
According to the access unit information and the far-end unit information, it is corresponding to obtain to establish corresponding data link
First single channel Parallel I Q data stream；
Resampling is carried out to obtain the second single channel Parallel I Q data stream to the corresponding first single channel Parallel I Q data stream；
According to the far-end unit information, the second single channel Parallel I Q data stream that the resampling is obtained carries out framing to obtain
To the second multi-channel serial I/Q data stream.
13. according to the method for claim 12, which is characterized in that described to the corresponding first single channel Parallel I Q
Before data flow carries out resampling, the method also includes:
According to the far-end unit information, the first filter coefficient of the first resampling module is determined；
It is described that resampling is carried out to the first obtained single channel Parallel I Q data stream, comprising:
Resampling is carried out to obtain to the corresponding first single channel Parallel I Q data stream according to the first filter coefficient
Second single channel Parallel I Q data stream.
14. a kind of uplink I/Q data adaptation method for distributing antenna system characterized by comprising
Access unit information is read from access unit and reads far-end unit information from far-end unit；
According to the far-end unit information, the third multi-channel serial I/Q data stream obtained by the far-end unit is solved
Frame is to obtain third single channel Parallel I Q data stream；
Resampling is carried out to obtain the 4th single channel Parallel I Q data stream to the obtained third single channel Parallel I Q data stream；
According to the access unit information and the far-end unit information, it is corresponding to obtain to establish corresponding data link
4th single channel Parallel I Q data stream；
According to the access unit information, the corresponding 4th single channel Parallel I Q data stream is subjected to framing to obtain the 4th
Multi-channel serial I/Q data stream.
15. according to the method for claim 14, which is characterized in that described to the obtained third single channel Parallel I Q
Before data flow carries out resampling, the method also includes:
According to the access unit information, the second filter coefficient of the second resampling module is determined；
It is described that resampling is carried out to the obtained third single channel Parallel I Q data stream, comprising:
Resampling is carried out to obtain to the obtained third single channel Parallel I Q data stream according to the second filter coefficient
4th single channel Parallel I Q data stream.
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| WO2021023054A1 (en) * | 2019-08-02 | 2021-02-11 | 三维通信股份有限公司 | Uplink combination summation method and device, and distributed antenna system |
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