CN103546260B - Multi-radio remote unit cell-shared coordinating multipoint transmission method and device - Google Patents
Multi-radio remote unit cell-shared coordinating multipoint transmission method and device Download PDFInfo
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- CN103546260B CN103546260B CN201210237441.4A CN201210237441A CN103546260B CN 103546260 B CN103546260 B CN 103546260B CN 201210237441 A CN201210237441 A CN 201210237441A CN 103546260 B CN103546260 B CN 103546260B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/085—Access point devices with remote components
Abstract
The invention discloses a multi-radio remote unit cell-shared coordinating multipoint transmission method and device, and relates to the technical field of communication network technology; uplink demodulation performance can be improved, and user dropped calls can be reduced. According to an embodiment, the method includes a target RRU of a user device according to at least two radio remote units of a same base station; determining a coordinating RRU of the user device according to the target RRU and other RRU except for the target RRU; performing coordinating multipoint transmission CoMP equalization processing on received user data by the target RRU and the coordinating RRU, and acquiring demodulation data of the user device. The scheme provided by the embodiment is adaptable to multi-radio remote unit cell-shared uplink coordinating multipoint transmission.
Description
Technical field
The present invention relates to technical field of communication network, more particularly to a kind of many remote radio unit common community coordinate multipoint biographies
Defeated method and device.
Background technology
At present, the common cell of many Remote Radio Unit (Radio Remote Unit, RRU) is to close multiple RRU coverage cells
And be same cell, so originally Zone switched between multiple cells becomes same cell relay point, reduces switching, expands
Single station coverage distance, reduces cell reselection, the probability of cell switching of user equipment (User Equipment, UE) in network,
End user call success rate is lifted, call drop probability is reduced, Consumer's Experience and network quality is effectively lifted.
In prior art when using many RRU information that altogether cell manner uplink receiving UE sends, all receptions this UE believes
The RRU of breath measures the up Signal to Interference plus Noise Ratio (Signal-to-Interference plus Noise Ratio, SINR) of UE, choosing
Select the maximum RRU of wherein SINR to service for UE, receive the information of UE transmissions and be demodulated.
However, when receiving UE information and when demodulating using prior art, the imbricate region covered due to multiple RRU away from
Distant from base station, signal is poor, causes uplink demodulation poor-performing, and user's drop rate is higher.
The content of the invention
Embodiments of the invention provide a kind of method and device of many remote radio unit common community cooperative multipoint transmissions, can
To improve uplink demodulation performance, and reduce user's drop rate.
On the one hand, embodiments of the invention provide a kind of method of many remote radio unit common community cooperative multipoint transmissions,
Including：
Target RRU of user equipment is determined according at least two radio frequency remote unit RRUs of same base station；
According to target RRU and the RRU in addition to target RRU, the cooperation RRU of the user equipment is determined；
Cooperative multipoint transmission CoMP is carried out to the user data for receiving by target RRU and the cooperation RRU balanced
Process, to obtain the demodulating data of the user equipment.
In an alternative embodiment of the invention, at least two RRU according to same base station determine the target of user equipment
RRU includes：Obtain the up Signal to Interference plus Noise Ratio SINR of at least two RRU measurements of same base station；Determine in the upstream sinr most
Targets RRU of the corresponding RRU of big upstream sinr for user equipment.
In an alternative embodiment of the invention, it is described according to target RRU and the RRU in addition to target RRU, really
The cooperation RRU of the fixed user equipment includes：According to the target RRU measurement uplink reference signals receiving power RSRP and
The up RSRP of the RRU measurements in addition to target RRU, determines the cooperation RRU of the user equipment；Or, according to described
The upstream sinr of target RRU measurement and the upstream sinr of the RRU measurements in addition to target RRU, determine that the user sets
Standby cooperation RRU.
On the other hand, embodiments of the invention provide a kind of dress of many remote radio unit common community cooperative multipoint transmissions
Put, including：
Processor, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs；And according to
Target RRU and the RRU in addition to target RRU, determine the cooperation RRU of the user equipment；
Target RRU, the user data for combining to receiving with the cooperation RRU carry out cooperative multipoint transmission
CoMP equilibrium treatments.
In an alternative embodiment of the invention, the processor is used for：Obtain the up Signal to Interference plus Noise Ratio of at least two RRU measurements
SINR；And determine targets RRU of the corresponding RRU of upstream sinr for user equipment of maximum in the upstream sinr.
In an alternative embodiment of the invention, the processor includes：First determining module, for according to target RRU
The up RSRP of the measurement and up RSRP of the measurements of the RRU in addition to target RRU, determines the cooperation of the user equipment
RRU；Or, the second determining module, for the upstream sinr that measured according to target RRU and in addition to target RRU
RRU measurement upstream sinr, determine the cooperation RRU of the user equipment.
The embodiment of the present invention provides a kind of method and device of many remote radio unit common community cooperative multipoint transmissions, passes through
Target RRU of user equipment is determined according at least two radio frequency remote unit RRUs of same base station；According to target RRU with
And the RRU in addition to target RRU, determine the cooperation RRU of the user equipment；By target RRU and the cooperation RRU
User data to receiving carries out cooperative multipoint transmission CoMP equilibrium treatment, to obtain the demodulating data of the user equipment.
With UE information is received in prior art and when demodulating, as the imbricate regional signal that multiple RRU are covered is poor, is caused
Row demodulation performance is poor, and user's drop rate is higher compares, and the present embodiment, can by target RRU and cooperation RRU Combined Treatment
To improve uplink demodulation performance, and reduce user's drop rate.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the method for a kind of many remote radio unit common community cooperative multipoint transmissions that the embodiment of the present invention 1 is provided
Flow chart；
Fig. 2 is the device of a kind of many remote radio unit common community cooperative multipoint transmissions that the embodiment of the present invention 1 is provided
Block diagram；
Fig. 3 is a kind of flow chart of the method for determination cooperation RRU that the embodiment of the present invention 2 is provided；
Fig. 4 is the flow chart of another kind of method for determining cooperation RRU that the embodiment of the present invention 2 is provided；
It is equal that target RRU and cooperation RRU that Fig. 5 is provided for the embodiment of the present invention 2 carries out CoMP to the user data for receiving
The schematic diagram that weighing apparatus is processed；
It is equal that target RRU and cooperation RRU that Fig. 6 is provided for the embodiment of the present invention 2 carries out CoMP to the user data for receiving
Another schematic diagram that weighing apparatus is processed；
It is equal that target RRU and cooperation RRU that Fig. 7 is provided for the embodiment of the present invention 2 carries out CoMP to the user data for receiving
Another schematic diagram that weighing apparatus is processed；
Fig. 8 is the device of a kind of many remote radio unit common community cooperative multipoint transmissions that the embodiment of the present invention 2 is provided
Block diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of method of many remote radio unit common community cooperative multipoint transmissions, and the method is held
Row main body is base station, as shown in figure 1, the method is comprised the following steps：
Step 101, determines target RRU of user equipment according at least two radio frequency remote unit RRUs of same base station；
It should be noted that at least two RRU are configured to same logic district, i.e. at least two RRU belongs to same
Individual base station, wherein at least include target RRU with the RRU that cooperates.
Optionally, obtain the up Signal to Interference plus Noise Ratio SINR of at least two radio frequency remote unit RRUs measurement of same base station；Really
Targets RRU of the maximum corresponding RRU of upstream sinr for user equipment in the fixed upstream sinr.
Step 102, according to target RRU and the RRU in addition to target RRU, determines the user equipment
Cooperation RRU；
Optionally, measured according to the up RSRP of target RRU measurement and the RRU in addition to target RRU
Up RSRP, determines the cooperation RRU of the user equipment；
Specifically, the up RSRP and each RRU in addition to target RRU of the target RRU measurement are calculated respectively
The absolute value of the difference of the up RSRP of measurement；The cooperation RRU of the user equipment is determined according to the absolute value of the difference.
Wherein, determine that the cooperation RRU of the user equipment includes following several ways according to the absolute value of the difference：
When the absolute value of difference described at least two is less than or equal to default CoMP (Coordinated Multi-
Point transmission cooperative multipoint transmissions) thresholding, and the corresponding RRU of absolute value of difference described at least two is phase
During with antenna number purpose RRU, determine that the corresponding RRU of absolute value of minimal difference in the absolute value of difference described at least two is institute
State the cooperation RRU of user equipment；
It is when the absolute value of difference described at least two is less than or equal to default CoMP thresholdings and poor described at least two
When the corresponding RRU of absolute value of value is the RRU of different antennae number, the absolute value of difference according at least two is corresponding
The upstream sinr of RRU measurements, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment；
When the absolute value of an only difference is less than or equal to default CoMP thresholdings, it is determined that the difference it is exhausted
RRU corresponding to value is the cooperation RRU of the user equipment；
When the absolute value of all of difference is more than default CoMP thresholdings, then the user equipment is used for non-CoMP
Family, exits handling process.
Optionally, the RRU measurements according to the upstream sinr of target RRU and in addition to target RRU is up
SINR, determines the cooperation RRU of the user equipment.
Specifically, the upstream sinr of the target RRU measurement and the RRU measurements in addition to target RRU are calculated respectively
Upstream sinr difference；When the difference is less than or equal to default upstream sinr difference threshold, according to the difference pair
The upstream sinr of the RRU measurements answered, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
Step 103, carries out cooperative multipoint transmission to the user data for receiving by target RRU and the cooperation RRU
CoMP equilibrium treatments, to obtain the demodulating data of the user equipment.
Optionally, as the RRU of target RRU and the cooperation RRU for same antenna number, the association in base station
Making RRU carries out discrete Fourier transform DFT process by the user data for receiving, by the CoMP data is activations for obtaining to institute
State target RRU in base station；
The user data for receiving is carried out DFT process by target RRU, obtains the 2nd CoMP data, and by described the
One CoMP data and the 2nd CoMP data carry out AF panel merging treatment.
Optionally, as the RRU of target RRU and the cooperation RRU for different antennae number, the association in base station
Making the user data that the antenna of preset number receives by RRU carries out DFT process, by the 3rd CoMP data is activations for obtaining to institute
State target RRU in base station；The user data for receiving is carried out DFT process by target RRU, obtains the 2nd CoMP numbers
According to, and the 3rd CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment；Or,
The user data for receiving is carried out DFT process by target RRU in base station, the 2nd CoMP numbers that will be obtained
According to the cooperation RRU being sent in the base station；The user data that the antenna of preset number is received by the cooperation RRU
DFT process is carried out, the 3rd CoMP data is obtained, and the 3rd CoMP data and the 2nd CoMP data is carried out into interference suppression
Merging treatment processed；Or,
As the RRU of target RRU and the cooperation RRU for different antennae number, the cooperation RRU in base station will
After the user data for receiving carries out DFT process, AF panel merging treatment and inverse discrete Fourier transform IDFT successively, obtain
The 5th CoMP data are obtained, and target RRU are given by the 5th CoMP data is activations；While target RRU in base station
After the user data for receiving is carried out DFT process, AF panel merging treatment and IDFT successively, the 6th CoMP numbers are obtained
According to；The 5th CoMP data and the 6th CoMP data are carried out maximum-ratio combing process by target RRU.
The embodiment of the present invention provides a kind of method of many remote radio unit common community cooperative multipoint transmissions, by true respectively
Set the goal RRU and cooperation RRU, and the user data that then target RRU and cooperation RRU combine to receiving carries out cooperative multipoint transmission
CoMP equilibrium treatments, can improve uplink demodulation performance, and reduce user's drop rate.
The embodiment of the present invention provides a kind of device of many remote radio unit common community cooperative multipoint transmissions, and the device can be with
For base station, as shown in Fig. 2 the device includes：Processor 201, target RRU202, cooperate RRU203；
Processor 201, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs；And root
According to target RRU and the RRU in addition to target RRU, the cooperation RRU of the user equipment is determined；
It should be noted that at least two RRU are configured to same logic district, i.e. at least two RRU belongs to same
Individual base station, at least including target RRU and the RRU that cooperates.
Optionally, the processor 201 is used for：Obtain the up Signal to Interference plus Noise Ratio upstream sinr of at least two RRU measurements；With
And determine targets RRU of the corresponding RRU of upstream sinr for user equipment of maximum in the upstream sinr.
Optionally, the first determining module in the processor 201, it is up for what is measured according to target RRU
The up RSRP of the RSRP and RRU in addition to target RRU measurements, determines the cooperation RRU of the user equipment；Or,
The second determining module in the processor 201, for the upstream sinr that measured according to target RRU and except the target
The upstream sinr of the RRU measurements outside RRU, determines the cooperation RRU of the user equipment.
Further, the calculating sub module in first determining module, for calculating the target RRU measurement respectively
The absolute value of the difference of the up RSRP that up RSRP is measured with each RRU in addition to target RRU；Described first determines
Determination sub-module in module, for the cooperation RRU of the user equipment is determined according to the absolute value of the difference.
Further, the determination sub-module is used for：
It is when the absolute value of difference described at least two is less than or equal to default CoMP thresholdings and poor described at least two
When the corresponding RRU of absolute value of value is the RRU of same antenna number, lowest difference in the absolute value of difference described at least two is determined
The corresponding RRU of absolute value of value is the cooperation RRU of the user equipment；
And when the absolute value of difference described at least two is less than or equal to default CoMP thresholdings, and at least two institutes
When the corresponding RRU of absolute value for stating difference is the RRU of different antennae number, the absolute value correspondence of difference according at least two
RRU measurements upstream sinr, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment；
And ought an only difference absolute value less than or equal to default CoMP thresholdings, it is determined that the difference
The corresponding RRU of absolute value be the user equipment cooperation RRU；
And when the absolute value of all of difference is more than default CoMP thresholdings, then the user equipment is non-CoMP
User, exits handling process.
Further, the calculating sub module in second determining module, for calculating the target RRU measurement respectively
The difference of the upstream sinr that upstream sinr is measured with the RRU in addition to target RRU；Determination in second determining module
Submodule, for when the difference is less than or equal to default upstream sinr difference threshold, according to the corresponding RRU of the difference
The upstream sinr of measurement, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
Target RRU202, the user data for combining to receiving with the cooperation RRU203 carry out coordinate multipoint
Transmission CoMP equilibrium treatments.
Further, when target RRU202 with it is described cooperate RRU203 be same antenna number RRU when, the association
Make RRU203, for the user data for receiving is carried out discrete Fourier transform DFT process, the CoMP data that will be obtained
It is sent to target RRU202；
Target RRU202, for the user data for receiving is carried out DFT process, obtains the 2nd CoMP data, and
The first CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment.
Further, as the RRU of target RRU and the cooperation RRU for different antennae number,
The cooperation RRU203, the user data for the antenna of preset number is received carry out DFT process, will obtain
The 3rd CoMP data is activations give target RRU202；Target RRU202, for the user data for receiving is carried out
DFT process, obtains the 2nd CoMP data, and the 3rd CoMP data and the 2nd CoMP data is carried out AF panel conjunction
And process；Or,
Target RRU202, for the user data for receiving is carried out DFT process, the 2nd CoMP numbers that will be obtained
According to being sent to the cooperation RRU203；The cooperation RRU203, for the user data that the antenna of preset number is received is entered
Row DFT process, obtains the 3rd CoMP data, and the 3rd CoMP data and the 2nd CoMP data is carried out AF panel
Merging treatment；Or,
The cooperation RRU203, for the user data for receiving to be carried out DFT process, AF panel merging treatment successively
And after inverse discrete Fourier transform IDFT, obtain the 5th CoMP data, and give the mesh by the 5th CoMP data is activations
Mark RRU202；Target RRU202, for the user data for receiving to be carried out DFT process successively, at AF panel merging
After reason and IDFT, the 6th CoMP data are obtained；And the 5th CoMP data and the 6th CoMP data are carried out most
Compare greatly merging treatment.
It should be noted that target RRU202 can be independently deposited respectively as two equipment with the RRU203 that cooperates
, but target RRU202 belongs to a base station with the RRU203 that cooperates.
The embodiment of the present invention provides a kind of device of many remote radio unit common community cooperative multipoint transmissions, by processing
Device, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs of same base station；And according to institute
Target RRU and the RRU in addition to target RRU are stated, the cooperation RRU of the user equipment is determined；Target RRU, uses
Cooperative multipoint transmission CoMP equilibrium treatment is carried out in the user data combined to receiving with the cooperation RRU, can be improved
Row demodulation performance, and reduce user's drop rate.
Embodiment 2
The embodiment of the present invention provides a kind of method of many remote radio unit common community cooperative multipoint transmissions, and the method is held
Row main body is base station, and with reference to shown in Fig. 1, the method includes：
Step 101, according at least two radio frequency remote unit RRUs of same base station, base station determines the target of user equipment
RRU；
It should be noted that at least two RRU are configured to same logic district, i.e. at least two RRU belongs to same
Individual base station, at least including target RRU and the RRU that cooperates.
Optionally, the up Signal to Interference plus Noise Ratio for obtaining at least two radio frequency remote unit RRUs measurement of same base station is up
SINR；Determine targets RRU of the corresponding RRU of upstream sinr for user equipment of maximum in the upstream sinr.
Step 102, the base station determine the use according to target RRU and the RRU in addition to target RRU
The cooperation RRU of family equipment；
This step can with using following two modes determine cooperation RRU：
Mode one：According to uplink reference signals receiving power (the Reference signal of target RRU measurement
Received power, RSRP) and in addition to target RRU RRU measurement up RSRP, determine the user equipment
Cooperation RRU.As shown in figure 3, comprising the following steps：
Step 301, obtains the up RSRP of target RRU measurement, and is designated as RSRP (0)；
Step 302, obtain in addition to target RRU RRU measurement up RSRP, and by measurement up RSRP carry out by
High to Low sequence, and RSRP (i) is designated as according to this, wherein, i=1, wherein 2 ... N-1, N are the number of the RRU of same base station；
Step 303, calculates the absolute value of the difference of RSRP (0) and RSRP (i), i.e., respectively according to D [i]=abs [RSRP
(0)-RSRP (i)] calculate up RSRP difference absolute value, wherein, i=1,2,3 ... N-1.
Whether step 304, judge D [i] more than default CoMP thresholdings；
Optionally, it can be 6dB or 10dB to preset CoMP thresholdings.
Step 305, when D [i] both greater than default CoMP thresholdings, then the user equipment is non-CoMP user, exits place
Reason flow process；
Step 306, when D [i] is less than or equal to default CoMP thresholdings, judges whether the corresponding RRU of D [i] are identical
The RRU of number of antennas；
It should be noted that when the RRU for meeting default CoMP thresholdings is at least two, then needing to determine whether D [i]
Whether corresponding RRU is the RRU of same antenna number；When the RRU for meeting default CoMP thresholdings is only one, then directly determine
This RRU for meeting condition is cooperation RRU.
Step 307, as RRUs of the corresponding RRU of D [i] for same antenna number, it is determined that minimal difference is exhausted in D [i]
RRU corresponding to value is the cooperation RRU of the user equipment；
The RRU of same antenna number can be the RRU of 2 antennas, or can be the RRU of 8 antennas.
Step 308, as RRUs of the corresponding RRU of D [i] for different antennae number, according to the corresponding RRU measurements of D [i]
Upstream sinr, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
The RRU of different antennae number can be the RRU of the RRU and 8 antennas of 2 antennas.
Mode two：RRU measurements according to the upstream sinr of target RRU measurement and in addition to target RRU
Upstream sinr, determines the cooperation RRU of the user equipment；As shown in figure 4, comprising the following steps：
Step 401, calculates the upstream sinr of the target RRU measurement and the RRU measurements in addition to target RRU respectively
Upstream sinr difference；
Whether step 402, judge the difference for calculating less than or equal to default upstream sinr difference threshold；
Step 403, when the difference is less than or equal to default upstream sinr difference threshold, according to difference correspondence
RRU measurements upstream sinr, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
Step 404, when the difference is more than default upstream sinr difference threshold, then the user equipment is used for non-CoMP
Family, exits handling process.
Step 103, carries out coordinate multipoint biography to the user data for receiving according to target RRU and the cooperation RRU
Defeated CoMP equilibrium treatments, to obtain the demodulating data of the user equipment；
This step can adopt following two equalization schemes according to the number of antennas of target RRU and cooperation RRU：
Optionally, when target RRU and cooperation RRU are the RRU of same antenna number, for example, target RRU and cooperation RRU
When being 2 antenna RRU, as shown in figure 5, the user data that 2 antennas are received by cooperation RRU carries out discrete Fourier transform
DFT process, will time domain data be transformed into frequency domain, obtain a CoMP data, and the CoMP data is activations for obtaining given
Target RRU；
While the RRU that cooperates is processed to the user data for receiving, the use that 2 antennas are received by target RRU
User data carries out DFT process, obtains the 2nd CoMP data；Target RRU receives the CoMP data that cooperation RRU sends, and will
The first CoMP data and the 2nd CoMP data carry out AF panel merging (Interference Rejection
Combining, IRC) process, will 4 antennas RRU carry out joint IRC equilibrium.
It should be noted that after carrying out equilibrium treatment, target RRU carries out inverse discrete Fourier transform (Inverse successively
Discrete Fourier Transform, IDFT), quadrature amplitude modulation (Quadrature Amplitude
Modulation, QAM), deinterleave computing, mixed spin system (Hybrid Automatic Requestor, HARQ)
Merge Combine and turbine decoding Turbo Decode, obtain the demodulating data of user equipment.
Optionally, as the RRU of target RRU and the cooperation RRU for different antennae number, for example, target RRU is
2 antenna RRU, cooperation RRU are 8 antenna RRU, as shown in fig. 6, the user data that the antenna of preset number is received by cooperation RRU
Carry out DFT process, will time domain data be transformed into frequency domain, optionally, the user that optional 6 antennas in 8 antenna RRU are received
Data carry out DFT process, obtain the 3rd CoMP data；By the 3rd CoMP data is activations for obtaining to target RRU；In cooperation RRU
While the user data for receiving is carried out DFT process, the user data that 2 antennas are received by target RRU is carried out
DFT process, obtains the 2nd CoMP data；Target RRU receives the 3rd CoMP data that cooperation RRU sends, and by the described 3rd
CoMP data and the 2nd CoMP data carry out AF panel merging treatment；
Or, the user data that 2 antennas are received by target RRU carries out DFT process, obtains the 2nd CoMP data；Mesh
The 2nd CoMP data that mark RRU will be obtained, are sent to cooperation RRU；The user data for receiving is carried out at DFT in target RRU
While reason, the user data that the antenna of preset number is received by the cooperation RRU carries out DFT process, optionally, by RRU
In 8 antennas in the user data that receives of optional 6 antennas carry out DFT process, obtain the 3rd CoMP data；Cooperation RRU connects
The 2nd CoMP data that target RRU sends are received, and the 3rd CoMP data and the 2nd CoMP data are carried out into interference suppression
Merging treatment processed.
It should be noted that after carrying out equilibrium treatment, target RRU carries out IDFT, QAM successively, deinterleaves computing, HARQ conjunctions
And Combine and turbine decoding Turbo Decode, obtain the demodulating data of user equipment.
Optionally, as the RRU of target RRU and the cooperation RRU for different antennae number, for example, target RRU is
2 antenna RRU, cooperation RRU are 8 antenna RRU, can also carry out CoMP equilibrium treatments using method described below, such as Fig. 7 institutes
Show, the user data that 8 antennas are received by the RRU that cooperates carries out DFT process, AF panel merging treatment and discrete Fu successively
In after leaf inverse transformation IDFT, obtain the 5th CoMP data, and by the 5th CoMP data is activations to target RRU；In cooperation RRU
While the user data that 8 antennas are received is processed, the user data that 2 antennas are received by target RRU is successively
DFT process, AF panel merging treatment and IDFT are carried out, the 6th CoMP data are obtained；Target RRU receives cooperation RRU and sends
The 5th CoMP data, and the 5th CoMP data and the 6th CoMP data are carried out into maximum-ratio combing (Maximum
Ratio Combining, MRC) process；
It should be noted that after carrying out equilibrium treatment, target RRU carries out QAM successively, deinterleaves computing, HARQ merging
Combine and turbine decoding Turbo Decode, obtains the demodulating data of user equipment.
The method of a kind of many remote radio unit common community cooperative multipoint transmissions provided in an embodiment of the present invention, by up
Multiple RRU joints receive UE data and are processed, and can further lift the uplink demodulation performance of RRU overlay regions user, and
And reduce user's drop rate.
The embodiment of the present invention provides a kind of device of many remote radio unit common community cooperative multipoint transmissions, and the device can be with
For base station, as shown in figure 8, the device includes：Processor 801, the first determining module 8011, calculating sub module 80111, it is determined that sub
Module 80112, the second determining module 8012, calculating sub module 80121, determination sub-module 80122, target RRU802, cooperation
RRU803；
Processor 801, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs；And root
According to target RRU and the RRU in addition to target RRU, the cooperation RRU of the user equipment is determined；
At least two radio frequency remote unit RRUs belong to many remote radio unit common community cooperative multipoint transmissions of the present embodiment
Device, that is, belong to a base station.
Further, the processor 801 is used for：Obtain the up Signal to Interference plus Noise Ratio upstream sinr of at least two RRU measurements；
And determine targets RRU of the corresponding RRU of upstream sinr for user equipment of maximum in the upstream sinr.
Further, the first determining module 8011 in the processor 801, for what is measured according to target RRU
The up RSRP of the up RSRP and RRU in addition to target RRU measurements, determines the cooperation RRU of the user equipment；Or
Person,
The second determining module 8012 in the processor 801, for the upstream sinr that measured according to target RRU with
And the upstream sinr of the RRU measurements in addition to target RRU, determine the cooperation RRU of the user equipment.
It should be noted that processor 801 is included in the first determining module 8011, the second determining module 8012 at least
One.
Further, the calculating sub module 80111 in first determining module 8011, for calculating the target respectively
The absolute value of the difference of the up RSRP that the up RSRP of RRU measurements is measured with each RRU in addition to target RRU；
Determination sub-module 80112 in first determining module 8011, for being determined according to the absolute value of the difference
The cooperation RRU of the user equipment.Specifically, the determination sub-module 80112 is used to work as the absolute of difference described at least two
Value is less than or equal to default CoMP thresholdings, and the corresponding RRU of absolute value of difference described at least two is same antenna number
During purpose RRU, determine that the corresponding RRU of absolute value of minimal difference in the absolute value of difference described at least two is set for the user
Standby cooperation RRU；And when the absolute value of difference described at least two is less than or equal to default CoMP thresholdings, and at least two
When the corresponding RRU of absolute value of the individual difference is the RRU of different antennae number, the absolute value of difference according at least two
The upstream sinr of corresponding RRU measurements, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment；And
When the absolute value of an only difference is less than or equal to default CoMP thresholdings, it is determined that the absolute value correspondence of the difference
RRU be the user equipment cooperation RRU；And when the absolute value of all of difference is more than default CoMP thresholdings,
Then the user equipment is non-CoMP user, exits handling process.
Further, the calculating sub module 80121 in second determining module 8012, for calculating the target respectively
The difference of the upstream sinr that the upstream sinr of RRU measurements is measured with the RRU in addition to target RRU；
Determination sub-module 80122 in second determining module 8012, for when the difference is less than or equal to pre-
If during upstream sinr difference threshold, according to the upstream sinr of the corresponding RRU measurements of the difference, it is determined that maximum upstream sinr correspondence
RRU be the user equipment cooperation RRU.
Target RRU802, the user data for combining to receiving with the cooperation RRU803 carry out coordinate multipoint
Transmission CoMP equilibrium treatments.
Further, as the RRU of target RRU802 and the cooperation RRU803 for same antenna number, the association
Make RRU803, for the user data for receiving is carried out discrete Fourier transform DFT process, the CoMP data that will be obtained
It is sent to target RRU802；
Target RRU802, for the user data for receiving is carried out DFT process, obtains the 2nd CoMP data, and
The first CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment.
Further, as the RRU of target RRU802 and the cooperation RRU803 for different antennae number, the association
Make RRU803, the user data for the antenna of preset number is received carries out DFT process, the 3rd CoMP data that will be obtained
It is sent to target RRU802；Target RRU802, for the user data for receiving carried out DFT process, obtains the
Two CoMP data, and the 3rd CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment；Or,
Target RRU802, for the user data for receiving is carried out DFT process, the 2nd CoMP numbers that will be obtained
According to being sent to the cooperation RRU803；The cooperation RRU803, for the user data that the antenna of preset number is received is entered
Row DFT process, obtains the 3rd CoMP data, and the 3rd CoMP data and the 2nd CoMP data is carried out AF panel
Merging treatment；Or,
The cooperation RRU803, for the user data for receiving to be carried out DFT process, AF panel merging treatment successively
And after inverse discrete Fourier transform IDFT, obtain the 5th CoMP data, and give the mesh by the 5th CoMP data is activations
Mark RRU802；Target RRU802, for the user data for receiving to be carried out DFT process successively, at AF panel merging
After reason and IDFT, the 6th CoMP data are obtained；And the 5th CoMP data and the 6th CoMP data are carried out most
Compare greatly merging treatment.
It should be noted that target RRU802 can be independently deposited respectively as two equipment with the RRU803 that cooperates
, but target RRU802 belongs to a base station with the RRU803 that cooperates.
The embodiment of the present invention provides a kind of device of many remote radio unit common community cooperative multipoint transmissions, by processing
Device, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs of same base station；And according to institute
Target RRU and the RRU in addition to target RRU are stated, the cooperation RRU of the user equipment is determined；Target RRU, uses
Cooperative multipoint transmission CoMP equilibrium treatment is carried out in the user data combined to receiving with the cooperation RRU, can be improved
Row demodulation performance, and reduce user's drop rate.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (14)
1. a kind of method of many remote radio unit common community cooperative multipoint transmissions, it is characterised in that include：
Target RRU of user equipment is determined according at least two radio frequency remote unit RRUs of same base station；
According to target RRU and the RRU in addition to target RRU, the cooperation RRU of the user equipment is determined；
Cooperative multipoint transmission CoMP equilibrium treatment is carried out to the user data for receiving by target RRU and the cooperation RRU,
To obtain the demodulating data of the user equipment；
Wherein, as the RRU of target RRU and the cooperation RRU for same antenna number, it is described by target RRU and
The cooperation RRU carries out cooperative multipoint transmission CoMP equilibrium treatment to the user data for receiving to be included：
The user data for receiving is carried out discrete Fourier transform DFT process by the cooperation RRU in base station, for obtaining
One CoMP data is activations are to target RRU in the base station；
The user data for receiving is carried out DFT process by target RRU, obtains the 2nd CoMP data, and by described first
CoMP data and the 2nd CoMP data carry out AF panel merging treatment.
2. method according to claim 1, it is characterised in that at least two remote radio lists according to same base station
First RRU determines that target RRU of user equipment includes：
Obtain the up Signal to Interference plus Noise Ratio SINR of at least two RRU measurements of same base station；
Determine targets RRU of the corresponding RRU of upstream sinr for user equipment of maximum in the upstream sinr.
3. method according to claim 2, it is characterised in that described according to target RRU and to remove target RRU
Outside RRU, determine that the cooperation RRU of the user equipment includes：
Surveyed according to uplink reference signals receiving power RSRP of target RRU measurement and the RRU in addition to target RRU
The up RSRP of amount, determines the cooperation RRU of the user equipment；Or,
The upstream sinr of the RRU measurements according to the upstream sinr of target RRU measurement and in addition to target RRU, really
The cooperation RRU of the fixed user equipment.
4. method according to claim 3, it is characterised in that the up RSRP according to target RRU measurement with
And the up RSRP of the RRU measurements in addition to target RRU, determine that the cooperation RRU of the user equipment includes：
The up RSRP for calculating the target RRU measurement respectively is up with each RRU measurement in addition to target RRU
The absolute value of the difference of RSRP；
The cooperation RRU of the user equipment is determined according to the absolute value of the difference.
5. method according to claim 4, it is characterised in that the absolute value according to the difference determines the user
The cooperation RRU of equipment includes：
When the absolute value of difference described at least two is less than or equal to default CoMP thresholdings, and difference described at least two
The corresponding RRU of absolute value for same antenna number RRU when, determine minimal difference in the absolute value of difference described at least two
The corresponding RRU of absolute value is the cooperation RRU of the user equipment；
When the absolute value of difference described at least two is less than or equal to default CoMP thresholdings, and difference described at least two
When the corresponding RRU of absolute value is the RRU of different antennae number, the corresponding RRU of the absolute value of difference according at least two is surveyed
The upstream sinr of amount, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment；
When the absolute value of an only difference is less than or equal to default CoMP thresholdings, it is determined that the absolute value of the difference
Corresponding RRU is the cooperation RRU of the user equipment；
When the absolute value of all of difference is more than default CoMP thresholdings, then the user equipment is non-CoMP user, is moved back
Go out handling process.
6. method according to claim 3, it is characterised in that the upstream sinr according to target RRU measurement with
And the upstream sinr of the RRU measurements in addition to target RRU, determine that the cooperation RRU of the user equipment includes：
The upstream sinr and the upstream sinr of the RRU measurements in addition to target RRU of the target RRU measurement are calculated respectively
Difference；
When the difference is less than or equal to default upstream sinr difference threshold, according to the corresponding RRU measurements of the difference
Upstream sinr, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
7. method according to claim 1, it is characterised in that when target RRU and the cooperation RRU are different antennae
It is during the RRU of number, described that cooperative multipoint transmission is carried out to the user data for receiving by target RRU and the cooperation RRU
CoMP equilibrium treatments also include：
The user data that the antenna of preset number is received by the cooperation RRU in base station carries out DFT process, for obtaining
Three CoMP data is activations are to target RRU in the base station；The user data for receiving is carried out DFT by target RRU
Process, obtain the 2nd CoMP data, and the 3rd CoMP data and the 2nd CoMP data are carried out into AF panel merging
Process；Or,
The user data for receiving is carried out DFT process by target RRU in base station, the 2nd CoMP data that will be obtained, and is sent out
Give the cooperation RRU in the base station；The user data that the antenna of preset number is received by the cooperation RRU is carried out
DFT process, obtains the 3rd CoMP data, and the 3rd CoMP data and the 2nd CoMP data is carried out AF panel conjunction
And process；Or,
The cooperation RRU in base station the user data for receiving is carried out successively DFT process, AF panel merging treatment and
After inverse discrete Fourier transform IDFT, the 5th CoMP data are obtained, and the target is given by the 5th CoMP data is activations
RRU；The user data for receiving is carried out target RRU in base station DFT process, AF panel merging treatment successively simultaneously
And after IDFT, obtain the 6th CoMP data；The 5th CoMP data and the 6th CoMP data are entered by target RRU
The process of row maximum-ratio combing.
8. a kind of device of many remote radio unit common community cooperative multipoint transmissions, it is characterised in that include：
Processor, for target RRU of user equipment is determined according at least two radio frequency remote unit RRUs；And according to described
Target RRU and the RRU in addition to target RRU, determine the cooperation RRU of the user equipment；
Target RRU, it is equal that the user data for combining to receiving with the cooperation RRU carries out cooperative multipoint transmission CoMP
Weighing apparatus process；
As the RRU of target RRU and the cooperation RRU for same antenna number,
The cooperation RRU, for the user data for receiving is carried out discrete Fourier transform DFT process, first for obtaining
CoMP data is activations give target RRU；
Target RRU, for the user data for receiving carried out DFT process, obtains the 2nd CoMP data, and by described the
One CoMP data and the 2nd CoMP data carry out AF panel merging treatment.
9. device according to claim 8, it is characterised in that the processor is used for：
Obtain the up Signal to Interference plus Noise Ratio SINR of at least two RRU measurements；And determine maximum up in the upstream sinr
Targets RRU of the corresponding RRU of SINR for user equipment.
10. device according to claim 9, it is characterised in that the processor includes：
First determining module, for the up RSRP that measured according to the target RRU and RRU in addition to target RRU
The up RSRP of measurement, determines the cooperation RRU of the user equipment；Or,
Second determining module, for the upstream sinr that measured according to target RRU and the RRU in addition to target RRU
The upstream sinr of measurement, determines the cooperation RRU of the user equipment.
11. devices according to claim 10, it is characterised in that first determining module includes：
Calculating sub module, for calculating the up RSRP of target RRU measurement and each in addition to target RRU respectively
The absolute value of the difference of the up RSRP of RRU measurements；
Determination sub-module, for the cooperation RRU of the user equipment is determined according to the absolute value of the difference.
12. devices according to claim 11, it is characterised in that the determination sub-module is used for：
When the absolute value of difference described at least two is less than or equal to default CoMP thresholdings, and difference described at least two
The corresponding RRU of absolute value for same antenna number RRU when, determine minimal difference in the absolute value of difference described at least two
The corresponding RRU of absolute value is the cooperation RRU of the user equipment；
And it is when the absolute value of difference described at least two is less than or equal to default CoMP thresholdings and poor described at least two
When the corresponding RRU of absolute value of value is the RRU of different antennae number, the absolute value of difference according at least two is corresponding
The upstream sinr of RRU measurements, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment；
And ought an only difference absolute value less than or equal to default CoMP thresholdings, it is determined that the difference it is exhausted
RRU corresponding to value is the cooperation RRU of the user equipment；
And when the absolute value of all of difference is more than default CoMP thresholdings, then the user equipment is used for non-CoMP
Family, exits handling process.
13. devices according to claim 10, it is characterised in that second determining module includes：
Calculating sub module, for calculating the SINR of the target RRU measurement respectively with the RRU measurements in addition to target RRU
SINR difference；
Determination sub-module, for when the difference is less than or equal to default upstream sinr difference threshold, according to the difference
The upstream sinr of corresponding RRU measurements, it is determined that the corresponding RRU of maximum upstream sinr is the cooperation RRU of the user equipment.
14. devices according to claim 8, it is characterised in that when target RRU and the cooperation RRU be not on the same day
During line number purpose RRU,
The cooperation RRU, the user data for the antenna of preset number is received carry out DFT process, the 3rd for obtaining
CoMP data is activations give target RRU；Target RRU, for the user data for receiving is carried out DFT process, obtains
2nd CoMP data, and the 3rd CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment；Or,
Target RRU, for the user data for receiving is carried out DFT process, the 2nd CoMP data that will be obtained are sent to
The cooperation RRU；The cooperation RRU, the user data for the antenna of preset number is received carry out DFT process, obtain
3rd CoMP data, and the 3rd CoMP data and the 2nd CoMP data are carried out into AF panel merging treatment；Or,
The cooperation RRU, for the user data for receiving is carried out successively DFT process, AF panel merging treatment and from
After scattered inverse Fourier transform IDFT, the 5th CoMP data are obtained, and target RRU is given by the 5th CoMP data is activations；
Target RRU, for the user data for receiving being carried out successively after DFT process, AF panel merging treatment and IDFT,
Obtain the 6th CoMP data；And the 5th CoMP data and the 6th CoMP data are carried out into maximum-ratio combing process.
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| CN101583161A (en) * | 2009-05-26 | 2009-11-18 | 北京邮电大学 | Cooperative node unit selection method and device |
| CN102484551A (en) * | 2009-08-21 | 2012-05-30 | 高通股份有限公司 | Multipoint equalization framework for coordinated multipoint transmission |
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| CN102195760A (en) * | 2010-03-16 | 2011-09-21 | 松下电器产业株式会社 | Wireless communication system, base station, terminal and method for generating codebook |
| CN101982995A (en) * | 2010-10-29 | 2011-03-02 | 华为技术有限公司 | Communication method, device and system |
| CN102324954B (en) * | 2011-05-18 | 2013-12-25 | 西安电子科技大学 | Cooperation combination preferable method based on synchronous constraint and signal channel energy rules |
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| CN101583161A (en) * | 2009-05-26 | 2009-11-18 | 北京邮电大学 | Cooperative node unit selection method and device |
| CN102484551A (en) * | 2009-08-21 | 2012-05-30 | 高通股份有限公司 | Multipoint equalization framework for coordinated multipoint transmission |
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