CN103905098B - A kind of method, system and the equipment of MIMO scheduling - Google Patents
A kind of method, system and the equipment of MIMO scheduling Download PDFInfo
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Abstract
The present embodiments relate to wireless communication technology field, more particularly to a kind of method, system and the equipment of MIMO scheduling, to solve the problems, such as that base station present in prior art is not high according to the low Rank obtained after high Rank CSI amendments CSI accuracy.Network side equipment of the embodiment of the present invention sends the configuration information of N number of process to user equipment, wherein N is the integer not less than 2, the configuration information of N number of process corresponds to same transfer point, the configuration information of a process corresponds to SU MIMO transmissions in the configuration information of N number of process, and the configuration information of other processes corresponds to MU MIMO transmissions.The not high influence to MU MIMO of accuracy for the low Rank that can avoid obtaining after being corrected according to high Rank CSI due to base station using the embodiment of the present invention, so as to preferably support MU MIMO transmission.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method, system and the equipment of MIMO scheduling.
Background technology
MIMO（Multiple-input and multiple-output）System using multiple transmittings, reception antenna, using the sky of signal, when, it is frequency-domain combined
Processing obtains speed, diversity and array gain.In mimo system, if emitter can know channel information in some way,
Can is optimized according to the characteristic of channel to sending signal, and Receiver Complexity is wanted with improving the quality of reception and reducing
Ask.Generally, TDD（Time divisionduplex, time division duplex）System can utilize channel reciprocity to obtain channel
Information, but to some special circumstances of FDD system or TDD system, it is necessary to pass through receiver feedback channel information.In actual system
The feedback system of quantized channel information is typically used in system, to reduce feedback overhead and feedback delay.The quantization of channel information can
With the pretreatment parameter recommended for channel matrix and its statistic or receiver.Channel information is by quantifying
Afterwards, it is mapped in the set of finite element composition, this collection is collectively referred to as code book.
In order that minizone interferes stabilization, to improve UE（User equipment）Report CQI（ChannelQuality
Indicator, channel quality instruction）Accuracy, Rel（Version）A kind of signaling by high level notice is provided in -8, to about
The method of beam codebook subset.Specifically, the codebookSubsetRestriction that UE is configured by high-level signaling（Codebook subset
Constraint）The PMI reported（Pre-coding MatrixIndicator, pre-coding matrix instruction）And RI（Rank
Indication, order instruction）.For a specific precoding codebook and related transmission mode, bitmap（Bit map）
All precoding codebook possibilities can be specified.Codebook subset constraint can be used for open loop, Closed-Loop Spatial Multiplexing, multi-user
MIMO and the precoding of closed loop RI=1.
In order to further improve spectrum efficiency, the same time services more UE, introduces MU-MIMO as far as possible
（Multiple-user MIMO, multi-user's multiple-input and multiple-output）Technology, i.e., multiple UE are dispatched in same resource, are total to multiple UE
Same resource is enjoyed, so as to improve the capacity of whole system.Base station determines that UE is according to UE business demand and channel status
SU-MIMO（Single-user MIMO, single user multiple-input and multiple-output）Or MU-MIMO transmission.May be used at present in standard
To realize the switching at runtime between SU-MIMO and MU-MIMO, without RRC（Radio Resource Control, Radio Resource
Control）Signal deployment.The switching of dynamic MIMO mode has very big importance for improving link circuit self-adapting and dispatching flexibility,
Switching between SU/MU can be very frequent（Such as each subframe）.MU-MIMO is due to being that multiple UE take identical resource, simultaneously
Multiple users are dispatched, the power that multiple users will divide equally in the resource is also implied that, is transmitted relative to SU-MIMO, transmission power
Have obvious reduction.Factor of both comprehensive, MU-MIMO is typically transmitted using relatively low Rank, and existing feedback machine
Make what the SU-MIMO being directed to was designed, in the case where channel condition is relatively good, the CSI of feedback（Channel condition information）In
Rank（Order）Compare high, unsuitable MU-MIMO transmission, and base station is according to the low Rank obtained after high Rank CSI amendments CSI
Accuracy is not high, and MU-MIMO performance is had a certain impact.
In summary, at present in the case where channel condition is relatively good, the Rank in the CSI of feedback is higher, and base station
The low Rank obtained after being corrected according to high Rank CSI CSI accuracy is not high, has bigger shadow to MU-MIMO performance
Ring.
The content of the invention
The present invention provides a kind of method, system and the equipment of MIMO scheduling, to solve base station present in prior art
The low Rank obtained after being corrected according to high Rank CSI CSI accuracy is not high, has bigger shadow to MU-MIMO performance
The problem of ringing.
A kind of method of MIMO scheduling provided in an embodiment of the present invention, including：
Network side equipment sends the configuration information of N number of process to user equipment, and wherein N is the integer not less than 2, it is N number of enter
The configuration information of journey corresponds to same transfer point, and the configuration information of a process corresponds to SU-MIMO in the configuration information of N number of process
Transmission, the configuration information of other processes correspond to MU-MIMO transmission；
The CSI information for N number of process that the network side equipment feeds back according to user equipment, carry out SU-MIMO or MU-MIMO
Scheduling.
A kind of method of MIMO scheduling provided in an embodiment of the present invention, including：
User equipment determines the CSI of N number of process according to the configuration information of the N number of process from network side equipment received
Information, wherein N are the integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, the configuration information of N number of process
In the configuration information of a process correspond to SU-MIMO transmission, the configuration information of other processes corresponds to MU-MIMO transmission；
The user equipment sends the N number of CSI information determined to the network side equipment.
A kind of network side equipment of MIMO scheduling provided in an embodiment of the present invention, including：
First sending module, for sending the configuration information of N number of process to user equipment, wherein N is whole not less than 2
Number, the configuration information of N number of process correspond to same transfer point, the configuration information pair of a process in the configuration information of N number of process
SU-MIMO is answered to transmit, the configuration information of other processes corresponds to MU-MIMO transmission；
Scheduler module, for the CSI information for the N number of process fed back according to user equipment, carry out SU-MIMO or MU-MIMO
Scheduling.
A kind of user equipment of MIMO scheduling provided in an embodiment of the present invention, including：
Determining module, for the configuration information according to the N number of process from network side equipment received, determine N number of process
CSI information, wherein N is integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, and N number of process is matched somebody with somebody
The configuration information of a process corresponds to SU-MIMO transmission in confidence breath, and the configuration information of other processes corresponds to MU-MIMO transmission；
Second sending module, for sending the N number of CSI information determined to the network side equipment, so that the network side
Equipment carries out SU-MIMO or MU-MIMO scheduling according to the CSI information of N number of process.
A kind of system of MIMO scheduling provided in an embodiment of the present invention, including：
Network side equipment sends the configuration information of N number of process to user equipment, the N number of process fed back according to user equipment
CSI information, carries out SU-MIMO or MU-MIMO scheduling, and wherein N is integer not less than 2, and the configuration information of N number of process corresponds to same
One transfer point, the configuration information of a process corresponds to SU-MIMO transmission in the configuration information of N number of process, and other processes are matched somebody with somebody
The corresponding MU-MIMO transmission of confidence breath；
User equipment, for the configuration information according to the N number of process from network side equipment received, determine N number of process
CSI information, to the network side equipment send determine N number of CSI information.
Network side equipment of the embodiment of the present invention sends the configuration information of N number of process to user equipment, and wherein N is positive integer, N
The configuration information of individual process corresponds to same transfer point, and the configuration information of a process corresponds to SU- in the configuration information of N number of process
MIMO transmission, the configuration information of other processes correspond to MU-MIMO transmission.Due to the embodiment of the present invention can feed back simultaneously it is different
Rank, avoid the low Rank not high shadow to MU-MIMO of accuracy obtained after being corrected due to base station according to high Rank CSI
Ring, so as to preferably support MU-MIMO transmission, improve systematic function.
Brief description of the drawings
Fig. 1 is the system structure diagram of MIMO of embodiment of the present invention scheduling；
Fig. 2 is the schematic diagram of the first two progress feedback of the embodiment of the present invention；
Fig. 3 is the schematic diagram of second of two progress feedbacks of the embodiment of the present invention；
Fig. 4 is the schematic diagram of three progress feedbacks of the embodiment of the present invention；
Fig. 5 is the structural representation of network side equipment in the system that MIMO of the embodiment of the present invention is dispatched；
Fig. 6 is the structural representation of user equipment in the system that MIMO of the embodiment of the present invention is dispatched；
Fig. 7 is the method flow schematic diagram of MIMO of embodiment of the present invention scheduling；
Fig. 8 is the method flow schematic diagram of MIMO of embodiment of the present invention scheduling.
Embodiment
Network side equipment of the embodiment of the present invention sends the configuration information of N number of process to user equipment, and wherein N is not less than 2
Integer, the configuration information of N number of process corresponds to same transfer point, and process matches somebody with somebody confidence in the configuration information of N number of process
The corresponding SU-MIMO transmission of breath, the configuration information of other processes correspond to MU-MIMO transmission.Because the embodiment of the present invention can be simultaneously
Different Rank is fed back, is avoided because base station is not high to MU- according to the low Rank obtained after high Rank CSI amendments accuracy
MIMO influence, so as to preferably support MU-MIMO transmission, improve systematic function.
Here process refers to the link for feeding back CSI, the corresponding CSI feedback link of a process；
Here transfer point refers to the transmission equipment point for serving user equipment, is mainly used in user device transmissions number
According to.One network side may have multiple transmission point.
The embodiment of the present invention is described in further detail with reference to Figure of description.
In following declarative procedure, first implement to illustrate from the cooperation of network side and user equipment side, finally distinguish
Illustrated from the implementation of network side and user equipment side, but this does not imply that the two must coordinate implementation, in fact, working as net
When network side and user equipment side are performed separately, also solve respectively in the problems of network side, user equipment side, simply two
When person is used in combination, superior technique effect can be obtained.
As shown in figure 1, the system of MIMO of embodiment of the present invention scheduling includes：Network side equipment 10 and user equipment 20.
Network side equipment 10, for sending the configuration information of N number of process to user equipment, wherein N is whole not less than 2
Number, the configuration information of N number of process correspond to same transfer point, the configuration information pair of a process in the configuration information of N number of process
SU-MIMO is answered to transmit, the configuration information of other processes corresponds to MU-MIMO transmission；The N number of process fed back according to user equipment 20
CSI information, carry out SU-MIMO or MU-MIMO scheduling；
User equipment 20, for the configuration information according to the N number of process from network side equipment 10 received, determine N number of
The CSI information of process, the N number of CSI information determined is sent to network side equipment 10.
The embodiment of the present invention is UE configuration pins to multiple processes of same transfer point, one of process for SU transmit into
Row feedback, other processes are fed back for the low Rank of MU, realize reporting for more Rank, improve MU-MIMO performance.
Wherein, include but is not limited in the configuration information of process part or all of in following message：
CSI-RS（Channel state information reference signals）Port, pattern configuration, sub-frame configuration and interferometry resource.
If it is preferred that CSI-RS ports, pattern configuration, sub-frame configuration and interference that the configuration information of N number of process includes
Measure the part or all of information in resource, the then configuration information of N number of process includes CSI-RS ports, pattern configuration, son
Frame configuration is identical with interferometry resource.If the configuration information than N number of process includes CSI-RS ports, then N number of process
The CSI-RS ports that configuration information includes are identical；If the configuration information of N number of process includes pattern configuration and sub-frame configuration,
The pattern configuration that the configuration information of N number of process includes is identical, and the sub-frame configuration that the configuration information of N number of process includes is identical.
It is preferred that codebook subset constraint parameter normal configuration in the configuration information of the process of corresponding SU-MIMO transmission, here
Normal configuration may refer to the agreements of 3GPP TS 36.213, will not be repeated here；The configuration of the process of corresponding MU-MIMO transmission
Codebook subset constraint parameter configuration is that highest feedback Rank numbers are 1 or 2 in information（I.e. low Rank）If than codebook subset constraint
Parameter configuration is that highest feedback Rank numbers are 1, then constraint can only report Rank 1；If codebook subset constraint parameter configuration is highest
It is 2 to feed back Rank numbers, then constraint reports Rank 1 or 2.
Accordingly, user equipment 20 determines N number of CSI according to the Rank of codebook subset constraint restriction on the parameters in configuration information
Information.
Wherein, user equipment 20 according to the Rank of codebook subset constraint restriction on the parameters determine corresponding to CSI information it is specific
Mode may refer to the agreements of 3GPP TS 36.213, will not be repeated here.
Wherein, PDSCH in the configuration information of corresponding MU-MIMO transmission（Physical DownlinkShared
Channel, Physical Downlink Shared Channel）EPRE（Energy per resource element, resource unit energy）And CSI-
RS EPRE ratio is Pc-K；
It is preferred that PDSCH EPRE and CSI-RS EPRE ratio are P in the configuration information of corresponding MU-MIMO transmissionc-
K.Wherein, PcFor the ratio of PDSCH EPRE and the CSI-RS EPRE in the configuration information of corresponding SU-MIMO transmission；K be 0 or
Positive integer.
Accordingly, user equipment 20 is according to the ratio of PDSCH EPRE and CSI-RSEPRE in the configuration information of N number of process
It is determined that corresponding CSI information.
Wherein, the tool of the CSI information according to corresponding to determining PDSCH EPRE and CSI-RS EPRE ratio of user equipment 20
Body mode may refer to the agreements of 3GPP TS 36.213, will not be repeated here.
PDSCH EPRE and the CSI-RS EPRE configured in N number of process ratio can be with identical, can also be different.
It is preferred that K values corresponding to process different in the configuration information of corresponding MU-MIMO transmission are different.Here difference
Can differ entirely or part is different.
Which transmission the configuration information that process is required no knowledge about due to user equipment corresponds to, so for user equipment one
Ratio is P in the configuration information of processc, remaining N-1 process ratio is Pc-K；K is 0 or positive integer.
It is preferred that K values corresponding to the configuration information of remaining N-1 process are different.Here difference can be differed entirely
Or part is different.
In force, code book instruction parameter can also be included in the configuration information of process.
Accordingly, user equipment 20 is according to the code book configured information in the configuration information of each process, it is determined that each process
The code book of use, and the CSI information according to corresponding to determining the code book of determination.
Wherein, the concrete mode of CSI information according to corresponding to determining code book configured information of user equipment 20 may refer to
The agreements of 3GPP TS 36.213, will not be repeated here.
In force, user equipment 20 can also be according to code book configured information, codebook subset constraint parameter and PDSCH
CSI information corresponding at least two determinations in EPRE and CSI-RS EPRE ratio, concrete mode may refer to 3GPP TS
36.213 agreement, it will not be repeated here.
Wherein, the code book instruction parameter in the configuration information of the process of corresponding SU-MIMO transmission and MU-MIMO transmission are entered
Code book instruction parameter in the configuration information of journey can be with identical, can also be different.
Every kind of lower only a kind of code book of antenna port configuration in 3GPP agreements at present, may subsequently introduce feedback enhancing side
Case, as designed a kind of new enhancing code book under 4 antenna ports, to improve the precision of terminal feedback, it is mainly used in improving MU-MIMO
The performance of transmission.
It is preferred that can be indicated using the enhancing code book to be increased to MU performances for the process of MU transmission, and it is directed to
The process instruction of SU transmission uses original code book, and original code book here may refer to the agreements of 3GPP 36.211 and 36.213,
It will not be repeated here.
It should be noted that the information that the configuration information of process of the embodiment of the present invention includes is not limited to above-mentioned enumerate
Information, as long as N number of process be for same transfer point set any information be all suitable for the bright embodiment of this law.
Wherein, network side equipment 10 can pass through the configuration information of 20N process of high-level signaling notifying user equipment；
User equipment 20 determines the available code book scope of different processes according to configuration information, and according to can be entered with code book scope
One step determines the CSI information of N number of process, can in CSI information then by the CSI feedback of the information of N number of process to network side equipment 10
With including part or all of in RI, PMI and CQI；
Then, the CSI information for N number of process that network side equipment feeds back according to user equipment, SU-MIMO or MU- is carried out
MIMO is dispatched and transmission.
Wherein, the network side equipment of the embodiment of the present invention can be base station（Such as macro base station, Home eNodeB etc.）, can also
It is RN（Relaying）Equipment, it can also be other network side equipments.
Several examples are set forth below to illustrate the solution of the present invention.
Example one, base station configure 2 processes, in 2 processes in addition to the parameter of codebook subset constraint, remaining parameter all phases
Together, the codebook subset normal restraint of one of process, another process limit only to report Rank1 CSI information, such as Fig. 2
It is shown.
The feedback of process 1 is directed to the normal Rank of SU transmission RI/PMI/CQI, is dispatched for SU, the limit feedback of process 2
Rank numbers, Rank1 RI/PMI/CQI is fed back, dispatched for MU.Base station needs feedback 2 by high-level signaling notifying user equipment
Individual process, and the configuration information of each process.User equipment receives the configuration information of 2 processes, and 2 are calculated according to configuration information
The CSI of process, and fed back.Base station receives the CSI information MIMO scheduling and transmission of 2 processes of user equipment feedback.
Example two, base station configure 2 processes, in 2 processes in addition to the parameter of codebook subset constraint, remaining parameter all phases
Together, the codebook subset normal restraint of one of process, another process are limited to the CSI information that highest feedback Rank is 2, i.e.,
Rank1/2 RI/PMI/CQI is reported, as shown in Figure 3.
The feedback of process 1 is directed to the normal Rank of SU transmission RI/PMI/CQI, is dispatched for SU, the limit feedback of process 2
Highest Rank numbers are 2, feed back Rank1/2（That is the highest Rank of limit feedback is 2）RI/PMI/CQI, for MU dispatch.Base
Stand and notify UE to need to feed back 2 processes, and the configuration information of each process by high-level signaling.User equipment receives 2 processes
Configuration information, the CSI of 2 processes is calculated according to configuration information, and is fed back.Base station receives 2 of user equipment feedback
The CSI information MIMO scheduling and transmission of process.
Example three, base station configure 3 processes, in 3 processes in addition to the parameter of codebook subset constraint, remaining parameter all phases
Together, the codebook subset normal restraint of one of process, a process limit only to report Rank1 PMI/CQI, last
The PMI/CQI for reporting Rank1/2 is constrained to, as shown in Figure 4.
The feedback of process 1 is dispatched, process 2 limits only to instead for the normal Rank of SU transmission RI/PMI/CQI for SU
Rank1 RI/PMI/CQI is presented, is dispatched for MU, the limit feedback highest Rank of process 3 is 2 RI/PMI/CQI, is also used for MU
Scheduling, wherein, when base station carries out MU scheduling, the low Rank reported according to the process 2 of user equipment to report and process 3 CSI, really
The suitable Rank numbers of fixed user equipment MU transmission.Base station notifies UE to need to feed back 3 processes by high-level signaling, and each enters
The configuration information of journey.User equipment receives the configuration information of 3 processes, and the CSI of 3 processes is calculated according to configuration information, is gone forward side by side
Row feedback.Base station receives the CSI information MIMO scheduling and transmission of 3 processes of user equipment feedback.
Example four, base station configure 2 processes, except codebook subset constraint and PDSCH EPRE and CSI-RS in 2 processes
Outside EPRE ratio parameter, remaining parameter is all identical, and the codebook subset normal restraint of one of process, ratio parameter is arranged to
Pc, another process limits only to report Rank1 RI/PMI/CQI, and ratio parameter is arranged to Pc- K, preferably, K=3 or 6, its
Middle PcAll it is dB values with K.The feedback of process 1 is dispatched, process 2 limits for the normal Rank of SU transmission RI/PMI/CQI for SU
The Rank numbers of feedback are made, feed back Rank1 RI/PMI/CQI, are dispatched for MU.Because for user equipment, MU transmission is relative
In SU transmission base station transmit power can reduce, in order to obtain for reduce after CQI, process 2 set PDSCH EPRE with
CSI-RS EPRE odds ratio process 1 small 3 or 6dB.Base station notifies UE to need to feed back 2 processes by high-level signaling, and each
The configuration information of process.It should be noted that PDSCH EPRE and CSI- in another process configuration information of base station notice UE
RS EPRE ratio parameter is Pc- K value, the value without notifying K.User equipment receives the configuration information of 2 processes,
The CSI of 2 processes is calculated according to configuration information, and is fed back.Base station receives the CSI letters of 2 processes of user equipment feedback
Cease MIMO scheduling and transmission.
Example five, base station configure 2 processes, except codebook subset constraint and PDSCH EPRE and CSI-RS in 2 processes
Outside EPRE ratio parameter, remaining parameter is all identical, and the codebook subset normal restraint of one of process, ratio parameter is arranged to
Pc, another process limitation highest feedback Rank numbers are 2, that is, report Rank1/2 RI/PMI/CQI, ratio parameter is arranged to Pc-
K, preferably, K=3 or 6, wherein PcAll it is dB values with K.
The feedback of process 1 is directed to the normal Rank of SU transmission RI/PMI/CQI, is dispatched for SU, the limit feedback of process 2
Highest Rank numbers are 2, feed back Rank1/2 RI/PMI/CQI, are dispatched for MU.Since for user equipment, MU transmission phases
For SU transmission base station transmit power can reduce, in order to obtain for reduce after CQI, process 2 set PDSCH EPRE with
CSI-RS EPRE odds ratio process 1 small 3 or 6dB.Base station notifies UE to need to feed back 2 processes by high-level signaling, and each
The configuration information of process.It should be noted that PDSCH EPRE and CSI- in another process configuration information of base station notice UE
RS EPRE ratio parameter is Pc- K value, the value without notifying K.User equipment receives the configuration information of 2 processes,
The CSI of 2 processes is calculated according to configuration information, and is fed back.Base station receives the CSI letters of 2 processes of user equipment feedback
Cease MIMO scheduling and transmission.
Example six, base station configure 2 processes, increase the parameter of code book instruction in the configuration information of process, such as increase 1bit
Parameter, bit 0 represent use original code book, bit 1 represent using enhancing code book, naturally it is also possible in turn.2 process originals
For some configuration informations in addition to codebook subset constraint parameter, remaining parameter is all identical, the code book instruction parameter of one of process
It is arranged to use original code book, codebook subset normal restraint, another process code book instruction parameter is arranged to using enhancing
Code book, codebook subset constraint parameter limit only to report Rank1 CSI information.
The feedback of process 1 is directed to the normal Rank of SU transmission RI/PMI/CQI, is dispatched for SU, the limit feedback of process 2
Rank numbers, Rank1 RI/PMI/CQI is fed back, dispatched for MU.Base station notifies UE to need feedback 2 to enter by high-level signaling
Journey, and the configuration information of each process, including the code book instruction parameter newly increased.User equipment 2 processes of reception match somebody with somebody confidence
Breath, the CSI of 2 processes is calculated according to configuration information, and is fed back.Base station receives the CSI of 2 processes of user equipment feedback
Information MIMO is dispatched and transmission.
Example seven, base station configure 2 processes, increase the parameter of code book instruction in the configuration information of process, such as increase 1bit
Parameter, bit 0 represent use original code book, bit 1 represent using enhancing code book, naturally it is also possible in turn.2 process originals
Some configuration informations are in addition to codebook subset constraint and PDSCH EPRE and CSI-RS EPRE ratio parameter, and remaining parameter is all
Identical, the code book instruction parameter of one of process is arranged to use original code book, codebook subset normal restraint, ratio parameter
It is arranged to Pc；Another process code book instruction parameter is arranged to the code book using enhancing, and codebook subset constraint parameter limits only to
Rank1 PMI/CQI is reported, ratio parameter is arranged to Pc- K, preferably, K=3 or 6.
The feedback of process 1 is directed to the normal Rank of SU transmission RI/PMI/CQI, is dispatched for SU, the limit feedback of process 2
Rank numbers, Rank1 RI/PMI/CQI is fed back, dispatched for MU.Because for user equipment, MU transmission is transmitted relative to SU
The transmit power of base station can reduce, in order to obtain setting PDSCH EPRE and CSI-RS EPRE for the CQI after reducing, process 2
Odds ratio process 1 small 3 or 6dB.Base station notifies UE to need to feed back 2 processes, and the configuration of each process by high-level signaling
Information, including the code book instruction parameter newly increased.It should be noted that in another process configuration information of base station notice UE
PDSCH EPRE and CSI-RS EPRE ratio parameter are Pc- K value, the value without notifying K.User equipment receives 2
The configuration information of process, the CSI of 2 processes is calculated according to configuration information, and is fed back.Base station receives user equipment feedback
The CSI information MIMO scheduling and transmission of 2 processes.
As shown in figure 5, the network side equipment in the system of MIMO of embodiment of the present invention scheduling includes：First sending module
500 and scheduler module 510.
First sending module 500, for sending the configuration information of N number of process to user equipment, wherein N is not less than 2
Integer, the configuration information of N number of process correspond to same transfer point, the configuration information of a process in the configuration information of N number of process
Corresponding SU-MIMO transmission, the configuration information of other processes correspond to MU-MIMO transmission；
Scheduler module 510, for the CSI information for the N number of process fed back according to user equipment, carry out SU-MIMO or MU-
MIMO is dispatched.
It is preferred that CSI-RS ports, pattern configuration, sub-frame configuration and interference that the configuration information of N number of process includes are surveyed
It is identical to measure resource.
It is preferred that codebook subset constraint parameter configuration is that highest is anti-in the configuration information of the process of corresponding MU-MIMO transmission
It is 1 or 2 to present Rank numbers.
It is preferred that PDSCH EPRE and CSI-RS EPRE ratio are P in the configuration information of corresponding MU-MIMO transmissionc-
K；
Wherein, PcFor the ratio of PDSCH EPRE and CSI-RSEPRE in the configuration information of corresponding SU-MIMO transmission；K
For 0 or positive integer.
It is preferred that K values corresponding to process different in the configuration information of corresponding MU-MIMO transmission are different.
It is preferred that the configuration information of process includes code book instruction parameter.
It is preferred that code book instruction parameter and MU-MIMO transmission in the configuration information of the process of corresponding SU-MIMO transmission
Code book instruction parameter in the configuration information of process is different.
As shown in fig. 6, the user equipment in the system of MIMO of embodiment of the present invention scheduling includes：Determining module 600 and
Two sending modules 610.
Determining module 600, for according to the configuration information of N number of process from network side equipment received, determine it is N number of enter
The CSI information of journey, wherein N are the integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, N number of process
The configuration information of a process corresponds to SU-MIMO transmission in configuration information, and the configuration information of other processes corresponds to MU-MIMO biographies
It is defeated；
Second sending module 610, for sending the N number of CSI information determined to network side equipment, so that network side equipment root
According to the CSI information of N number of process, SU-MIMO or MU-MIMO scheduling is carried out.
It is preferred that CSI-RS ports, pattern configuration, sub-frame configuration and interferometry money in the configuration information of N number of process
Source is identical.
It is preferred that Rank of the determining module 600 according to codebook subset constraint restriction on the parameters in configuration information, determines N number of CSI
Information.
It is preferred that ratio of the determining module 600 according to PDSCH EPRE and CSI-RSEPRE in the configuration information of N number of process
It is determined that corresponding CSI information；
Wherein, ratio is P in the configuration information of a processc, remaining N-1 process ratio is Pc-K；K is 0 or just whole
Number.
It is preferred that K values corresponding to the configuration information of remaining N-1 process are different.
It is preferred that determining module 600 is according to the code book configured information in the configuration information of each process, it is determined that each process
The code book of use, and the CSI information according to corresponding to determining the code book of determination.
Based on same inventive concept, a kind of method of MIMO scheduling is additionally provided in the embodiment of the present invention, due to this method
Corresponding equipment is the network side equipment in the system of MIMO of embodiment of the present invention scheduling, and this method solves the principle of problem
It is similar to the equipment, therefore the implementation of this method may refer to the implementation of equipment, repeats part and repeats no more.
As shown in fig. 7, the method for MIMO of embodiment of the present invention scheduling comprises the following steps：
Step 701, network side equipment send the configuration information of N number of process to user equipment, and wherein N is whole not less than 2
Number, the configuration information of N number of process correspond to same transfer point, the configuration information pair of a process in the configuration information of N number of process
SU-MIMO is answered to transmit, the configuration information of other processes corresponds to MU-MIMO transmission；
The CSI information for N number of process that step 702, network side equipment feed back according to user equipment, carry out SU-MIMO or MU-
MIMO is dispatched.
It is preferred that CSI-RS ports, pattern configuration, sub-frame configuration and interference that the configuration information of N number of process includes are surveyed
It is identical to measure resource.
It is preferred that codebook subset constraint parameter configuration is that highest is anti-in the configuration information of the process of corresponding MU-MIMO transmission
It is 1 or 2 to present Rank numbers.
It is preferred that PDSCH EPRE and CSI-RS EPRE ratio are P in the configuration information of corresponding MU-MIMO transmissionc-
K；
Wherein, PcFor the ratio of PDSCH EPRE and CSI-RSEPRE in the configuration information of corresponding SU-MIMO transmission；K
For 0 or positive integer.
It is preferred that K values corresponding to process different in the configuration information of corresponding MU-MIMO transmission are different.
It is preferred that the configuration information of process includes code book instruction parameter.
It is preferred that code book instruction parameter and MU-MIMO transmission in the configuration information of the process of corresponding SU-MIMO transmission
Code book instruction parameter in the configuration information of process is different.
Based on same inventive concept, a kind of method of MIMO scheduling is additionally provided in the embodiment of the present invention, due to this method
Corresponding equipment be MIMO of the embodiment of the present invention scheduling system in user equipment, and this method solve problem principle with
The equipment is similar, therefore the implementation of this method may refer to the implementation of equipment, repeats part and repeats no more.
As shown in figure 8, the method for MIMO of embodiment of the present invention scheduling comprises the following steps：
Step 801, user equipment according to the configuration information of the N number of process from network side equipment received, determine it is N number of enter
The CSI information of journey, wherein N are the integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, N number of process
The configuration information of a process corresponds to SU-MIMO transmission in configuration information, and the configuration information of other processes corresponds to MU-MIMO biographies
It is defeated；
Step 802, user equipment send the N number of CSI information determined to network side equipment, so that network side equipment is according to N
The CSI information of individual process, carry out SU-MIMO or MU-MIMO scheduling.
It is preferred that CSI-RS ports, pattern configuration, sub-frame configuration and interferometry money in the configuration information of N number of process
Source is identical.
It is preferred that Rank of the user equipment according to codebook subset constraint restriction on the parameters in configuration information, determines N number of CSI letters
Breath.
It is preferred that user equipment is true according to the ratio of PDSCH EPRE and CSI-RSEPRE in the configuration information of N number of process
CSI information corresponding to fixed；
Wherein, ratio is P in the configuration information of a processc, remaining N-1 process ratio is Pc-K；K is 0 or just whole
Number.
It is preferred that K values corresponding to the configuration information of remaining N-1 process are different.
It is preferred that user equipment is according to the code book configured information in the configuration information of each process, it is determined that each process is adopted
Code book, and the CSI information according to corresponding to determining the code book of determination.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (27)
- A kind of 1. method of multiple-input and multiple-output MIMO scheduling, it is characterised in that this method includes：Network side equipment sends the configuration information of N number of channel condition information process to user equipment, and wherein N is whole not less than 2 Number, the configuration information of N number of process correspond to same transfer point, the configuration information pair of a process in the configuration information of N number of process Single user multiple-input and multiple-output SU-MIMO is answered to transmit, the configuration information of other processes corresponds to multi-user's multiple-input and multiple-output MU- MIMO transmission；The CSI information for N number of process that the network side equipment feeds back according to user equipment, carry out SU-MIMO or MU-MIMO and adjust Degree.
- 2. the method as described in claim 1, it is characterised in that the channel status that the configuration information of N number of process includes Information reference signal CSI-RS ports, pattern configuration, sub-frame configuration are identical with interferometry resource.
- 3. the method as described in claim 1, it is characterised in that code book in the configuration information of the process of corresponding MU-MIMO transmission Subset restriction parameter configuration is that highest feedback order Rank numbers are 1 or 2.
- 4. the method as described in claim 1, it is characterised in that physical down is total in the configuration information of corresponding MU-MIMO transmission The ratio for enjoying channel resource units energy PDSCH EPRE and CSI-RS EPRE is Pc-K；Wherein, Pc is the ratio of the PDSCH EPRE and CSI-RS EPRE in the configuration information of corresponding SU-MIMO transmission；K For 0 or positive integer.
- 5. method as claimed in claim 4, it is characterised in that different process in the configuration information of corresponding MU-MIMO transmission Corresponding K values are different.
- 6. the method as described in claim 1, it is characterised in that the configuration information of process includes code book instruction parameter.
- 7. method as claimed in claim 6, it is characterised in that the code in the configuration information of the process of corresponding SU-MIMO transmission This instruction parameter is different with the code book instruction parameter in the configuration information of the process of MU-MIMO transmission.
- A kind of 8. method of MIMO scheduling, it is characterised in that this method includes：User equipment determines the CSI information of N number of process according to the configuration information of the N number of process from network side equipment received, Wherein N is integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, one in the configuration information of N number of process The configuration information of individual process corresponds to SU-MIMO transmission, and the configuration information of other processes corresponds to MU-MIMO transmission；The user equipment sends the N number of CSI information determined to the network side equipment, so that the network side equipment is according to N The CSI information of individual process, carry out SU-MIMO or MU-MIMO scheduling.
- 9. method as claimed in claim 8, it is characterised in that CSI-RS ports, figure in the configuration information of N number of process Sample configuration, sub-frame configuration are identical with interferometry resource.
- 10. method as claimed in claim 8, it is characterised in that the user equipment determines CSI information, including：The user equipment determines N number of CSI information according to the Rank of codebook subset constraint restriction on the parameters in configuration information.
- 11. method as claimed in claim 8, it is characterised in that the user equipment determines CSI information, including：The user equipment determines corresponding according to the ratio of PDSCH EPRE and CSI-RS EPRE in the configuration information of N number of process CSI information；Wherein, the ratio of PDSCH EPRE and CSI-RS EPRE described in the configuration information of a process are Pc, and remaining N-1 is individual The ratio of PDSCH EPRE and CSI-RS EPRE described in the configuration information of process are Pc-K；K is 0 or positive integer.
- 12. method as claimed in claim 11, it is characterised in that K values corresponding to the configuration information of remaining described N-1 process It is different.
- 13. method as claimed in claim 8, it is characterised in that the user equipment determines CSI information, including：The user equipment is according to the code book configured information in the configuration information of each process, it is determined that the code that each process uses This, and the CSI information according to corresponding to determining the code book of determination.
- 14. a kind of network side equipment of MIMO scheduling, it is characterised in that the network side equipment includes：First sending module, for sending the configuration information of N number of process to user equipment, wherein N is the integer not less than 2, N number of The configuration information of process corresponds to same transfer point, and the configuration information of a process corresponds to SU- in the configuration information of N number of process MIMO transmission, the configuration information of other processes correspond to MU-MIMO transmission；Scheduler module, for the CSI information for the N number of process fed back according to user equipment, carry out SU-MIMO or MU-MIMO scheduling.
- 15. network side equipment as claimed in claim 14, it is characterised in that what the configuration information of N number of process included CSI-RS ports, pattern configuration, sub-frame configuration are identical with interferometry resource.
- 16. network side equipment as claimed in claim 14, it is characterised in that the process of corresponding MU-MIMO transmission matches somebody with somebody confidence Codebook subset constraint parameter configuration is that highest feedback Rank numbers are 1 or 2 in breath.
- 17. network side equipment as claimed in claim 14, it is characterised in that in the configuration information of corresponding MU-MIMO transmission PDSCH EPRE and CSI-RS EPRE ratio are Pc-K；Wherein, Pc is the ratio of the PDSCH EPRE and CSI-RS EPRE in the configuration information of corresponding SU-MIMO transmission；K For 0 or positive integer.
- 18. network side equipment as claimed in claim 17, it is characterised in that in the configuration information of corresponding MU-MIMO transmission not K values are different corresponding to same process.
- 19. network side equipment as claimed in claim 14, it is characterised in that the configuration information of process includes code book instruction ginseng Number.
- 20. network side equipment as claimed in claim 19, it is characterised in that the process of corresponding SU-MIMO transmission matches somebody with somebody confidence Code book instruction parameter in breath is different with the code book instruction parameter in the configuration information of the process of MU-MIMO transmission.
- 21. a kind of user equipment of MIMO scheduling, it is characterised in that the user equipment includes：Determining module, for according to the configuration information of N number of process from network side equipment received, determining the CSI of N number of process Information, wherein N are the integer not less than 2, and the configuration information of N number of process corresponds to same transfer point, the configuration information of N number of process In the configuration information of a process correspond to SU-MIMO transmission, the configuration information of other processes corresponds to MU-MIMO transmission；Second sending module, for sending the N number of CSI information determined to the network side equipment, so that the network side equipment According to the CSI information of N number of process, SU-MIMO or MU-MIMO scheduling is carried out.
- 22. user equipment as claimed in claim 21, it is characterised in that the CSI-RS in the configuration information of N number of process Port, pattern configuration, sub-frame configuration are identical with interferometry resource.
- 23. user equipment as claimed in claim 21, it is characterised in that the determining module is specifically used for：According to the Rank of codebook subset constraint restriction on the parameters in configuration information, N number of CSI information is determined.
- 24. user equipment as claimed in claim 21, it is characterised in that the determining module is specifically used for：The CSI information according to corresponding to determining the ratio of PDSCH EPRE and CSI-RS EPRE in the configuration information of N number of process；Wherein, the ratio of PDSCH EPRE and CSI-RS EPRE described in the configuration information of a process are Pc, and remaining N-1 is individual The PDSCH EPRE and CSI-RS EPRE of process ratio are Pc-K；K is 0 or positive integer.
- 25. user equipment as claimed in claim 24, it is characterised in that the configuration information of remaining described N-1 process is corresponding K values it is different.
- 26. user equipment as claimed in claim 21, it is characterised in that the determining module is specifically used for：Code book configured information in the configuration information of each process, it is determined that the code book that each process uses, and according to determination Code book determine corresponding to CSI information.
- 27. a kind of system of MIMO scheduling, it is characterised in that the system includes：Network side equipment sends the configuration information of N number of process to user equipment, the CSI for the N number of process fed back according to user equipment Information, carries out SU-MIMO or MU-MIMO scheduling, and wherein N is integer not less than 2, and the configuration information of N number of process corresponds to same Individual transfer point, the configuration information of a process corresponds to SU-MIMO transmission, the configuration of other processes in the configuration information of N number of process Information corresponds to MU-MIMO transmission；User equipment, for according to the configuration information of N number of process from network side equipment received, determining the CSI of N number of process Information, the N number of CSI information determined is sent to the network side equipment.
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| CN106033991A (en) * | 2015-03-19 | 2016-10-19 | 北京信威通信技术股份有限公司 | Information feedback method of multi-user MIMO (multiple-input-multiple-output) system |
| CN106301506B (en) | 2015-05-15 | 2020-03-13 | 电信科学技术研究院 | Codebook subset constraint method and device |
| CN106685497B (en) * | 2015-11-06 | 2020-06-09 | 中兴通讯股份有限公司 | Codebook restriction signaling sending method, channel information quantization feedback method and device |
| WO2017219268A1 (en) * | 2016-06-22 | 2017-12-28 | Qualcomm Incorporated | Snr cqi feedback mechanism for mu-mimo and/or must |
| WO2018119562A1 (en) * | 2016-12-26 | 2018-07-05 | 华为技术有限公司 | Data transmission method and base station |
| CN109802806B (en) * | 2017-11-17 | 2021-04-02 | 维沃移动通信有限公司 | Method and equipment for configuring channel state information reference signal resources |
| CN114143889A (en) * | 2021-12-31 | 2022-03-04 | 赛特斯信息科技股份有限公司 | Downlink RANK self-adaptive method |
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| JP5379165B2 (en) * | 2008-01-30 | 2013-12-25 | アルカテル−ルーセント | Long-term CSI support MU-MIMO scheduling method, base station, and user equipment |
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| US8665930B2 (en) * | 2010-02-17 | 2014-03-04 | Blackberry Limited | System and method for channel status information feedback in a wireless communications system that utilizes multiple-input multiple-output (MIMO) transmission |
| CN102237961A (en) * | 2010-05-04 | 2011-11-09 | 株式会社Ntt都科摩 | Multiple input multiple output related information transmission method |
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| WO2011132727A1 (en) * | 2010-04-23 | 2011-10-27 | 株式会社エヌ・ティ・ティ・ドコモ | Feedback information transmission method, mobile station device and base station device |
| CN102281128A (en) * | 2011-08-08 | 2011-12-14 | 电信科学技术研究院 | Channel state information feedback triggering and feeding back method and device thereof |
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