CN103687033B - A kind of resource allocation methods and device of LTE MU mimo systems - Google Patents
A kind of resource allocation methods and device of LTE MU mimo systems Download PDFInfo
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Abstract
The embodiment of the present application discloses a kind of resource allocation methods of LTE MU mimo systems.This method includes：N number of UE of resource to be allocated quality of service metric is calculated, the quality of service metric is used for the quality of service requirements information for indicating UE；The UE for choosing maximum M resource to be allocated of quality of service metric according to the quality of service metric size constitutes pairing object set, and the M is less than N；Pairing processing is carried out to the UE of the resource to be allocated in the pairing object set；Identical running time-frequency resource is distributed to the UE matched.The embodiment of the present application also discloses a kind of resource allocation device of LTE MU mimo systems.The embodiment of the present application can make to need the related service of resource to obtain resource in time really.
Description
Technical field
The application is related to mobile communication technology field, more particularly to a kind of resource allocation methods of LTE MU-MIMO systems
And device.
Background technology
MIMO（Multiple-Input Multiple Output, multiple-input and multiple-output）Technology is due to significantly improving
The characteristics of power system capacity and the availability of frequency spectrum, it is widely used among various communication systems.3GPP LTE projects are initially
As one of essential key technology.For LTE system, user terminal small volume, to avoid the string between signal
Disturb, many antennas generally can not be installed, in actual application, develop the MU-MIMO technologies based on LTE system, i.e., it is empty
Intend MIMO technology（Multiuser MIMO technology, Muti-User MIMO）.Referring to Fig. 1, the figure shows the MU-MIMO of one 2 × 2
The scene signal of technology, can allow user terminal 1, user terminal 2 or more users terminal to take identical by the technology
Running time-frequency resource, and then carry out resource allocation using the running time-frequency resource, which effectively increases spatial multiplex gains, saves
Frequency spectrum resource.
In LTE MU-MIMO systems, which kind of mode multiple users are carried out using identical running time-frequency resource is shared, i.e.,
The resource allocation on pairing and pairing basis between user terminal is the crucial part of the technology.Prior art generally will letter
The quality decision condition that alternatively user terminal is matched of road quality, i.e., select according to the channel quality condition of different user terminals
Select respective pairing object and resource allocation mode, this multiple users to identical running time-frequency resource to share mode preferably real
The purpose that power system capacity and the availability of frequency spectrum are improved in LTE system is showed.But, in the case where system resource is limited, this
Distribution resource mode is planted it cannot be guaranteed that needing that using the related service of resource resource can be obtained in time really.
The content of the invention
In order to solve the above technical problems, the embodiment of the present application provides a kind of resource allocation side of LTE MU-MIMO systems
Method and device, to ensure to need really that using the related service of resource resource can be obtained in time, so as to realize regular traffic.
The resource allocation methods for the LTE MU-MIMO systems that the embodiment of the present application is provided include：
N number of UE of resource to be allocated quality of service metric is calculated, the quality of service metric is used to indicate UE's
Quality of service requirements information；
The UE structures of maximum M resource to be allocated of quality of service metric are chosen according to the quality of service metric size
Into pairing object set, the M is less than N；
Pairing processing is carried out to the UE of the resource to be allocated in the pairing object set；
Identical running time-frequency resource is distributed to the UE matched.
Preferably, the quality of service metric is carried by UE service priority, etc. data volume waiting for transmission and/or number
Determined according to the urgency of transmission.
Preferably, the pre-selection cycle is set, the quality of service degree for the N number of UE for calculating resource to be allocated is performed within the pre-selection cycle
The number of times for the step of value and the UE of M maximum resources to be allocated of selection quality of service metric constitute pairing object set is less than
The pre-selection cycle and the quotient of resource allocation cycle.
Preferably, the UE progress pairing processing of the resource to be allocated in the pairing object set is specifically included；
The UE of each resource to be allocated in pairing object set forming coefficient estimates the UE of each resource to be allocated
Azimuth；The UE that azimuthal difference is more than to the resource to be allocated of default correlation threshold value carries out pairing processing；With/
Or,
The average transmission rate and/or actual transmissions frequency spectrum for calculating the UE of each resource to be allocated in pairing object set are imitated
Rate, the difference that the difference of average transmission rate is less than Preset Transfer rate threshold value and/or actual transmissions spectrum efficiency is less than
The UE of the resource to be allocated of default spectrum efficiency threshold value carries out pairing processing.
Preferably, it is described to be specifically included to the UE matched distribution identical running time-frequency resources：
The UE matched scheduling metrics value is calculated, the UE that the scheduling metrics value is used to be designated as having matched carries out resource
The order of distribution；
According to the size of the scheduling metrics value identical running time-frequency resource is distributed to the UE matched.
It is further preferred that the scheduling metrics value for calculating the UE matched is specifically calculated according to the following equation：
In formula：WQosFor UE quality of service metric, WSINRFor UE channel quality status parameters, Rave(t）It is average for UE
Accumulation transmission rate, Wsche（ue）To have matched UE scheduling metrics value.
Preferably, before the UE of the resource to be allocated in the pairing object set carries out pairing processing, methods described
Also include：
Calculate the Signal to Interference plus Noise Ratio of the UE for matching each resource to be allocated in object set；
Signal to Interference plus Noise Ratio is more than to the UE of default Signal to Interference plus Noise Ratio threshold value as the UE of the resource to be allocated in pairing object set.
The embodiment of the present application additionally provides a kind of resource allocation device of LTE MU-MIMO systems.The device includes：Business
Quality metric value computing unit, pairing object select unit, pairing processing unit and resource allocation unit, wherein：
The quality of service metric computing unit, the quality of service metric of N number of UE for calculating resource to be allocated,
The quality of service metric is used for the quality of service requirements information for indicating UE；
The pairing object select unit, for choosing quality of service metric according to the quality of service metric size
The UE of M maximum resources to be allocated constitutes pairing object set, and the M is less than N；
The pairing processing unit, pairing processing is carried out for the UE to the resource to be allocated in the pairing object set；
The resource allocation unit, for distributing identical running time-frequency resource to the UE of pairing.
Preferably, described device also includes timing unit and performs number of times control unit, and the timing unit is used to set
Pre-selection cycle, the execution number of times control unit, for controlling the quality of service metric computing unit within the pre-selection cycle to perform
The quality of service metric and pairing object select unit for calculating N number of UE of resource to be allocated perform and choose quality of service metric
The number of times for the step of UE of M maximum resources to be allocated constitutes pairing object set is less than the pre-selection cycle and resource allocation week
The quotient of phase.
Preferably, the pairing processing unit specifically includes azimuth estimation subelement and the first pairing processing subelement,
And/or, speed/efficiency calculation subelement and the second pairing processing subelement, wherein：
Subelement is estimated at the azimuth, the figuration system for the UE of each resource to be allocated in pairing object set
Number estimates the UE of each resource to be allocated azimuth；
The first pairing processing subelement, for azimuthal difference to be more than into the to be allocated of default correlation threshold value
The UE of resource carries out pairing processing；
The speed/efficiency calculation subelement, for calculate each resource to be allocated in pairing object set UE it is flat
Equal transmission rate and/or actual transmissions spectrum efficiency；
The second pairing processing subelement, for the difference of average transmission rate to be less than into Preset Transfer rate threshold
The UE that the difference of value and/or actual transmissions spectrum efficiency is less than the resource to be allocated of default spectrum efficiency threshold value is carried out at pairing
Reason.
Preferably, the resource allocation unit is specifically included：Scheduling metrics value computation subunit and resource allocation subelement,
Wherein：
The scheduling metrics value computation subunit, the scheduling metrics value for calculating the UE matched, the scheduling metrics
It is worth the order that the UE for being designated as having matched carries out resource allocation；
The resource allocation subelement, identical is distributed for the size according to the scheduling metrics value to the UE matched
Running time-frequency resource.
The embodiment of the present application not only considers channel quality, and what is more important during UE time-frequency resource allocatings
UE quality of service is taken into account in the form of quality of service metric, as a bar for entering pairing object set
Part, this makes influence of the different user terminals UE own services demand to resource allocation rationally be reflected, and then resource-constrained
In the case of, it can preferably ensure to truly have the related service needed using resource to obtain resource in time, complete regular traffic.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of a scenario of MU-MIMO technologies；
Fig. 2 is the resource allocation methods embodiment flow chart of the LTE MU-MIMO systems of the application；
Fig. 3 is the resource allocation device embodiment composition frame chart of the LTE MU-MIMO systems of the application.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Referring to Fig. 2, the figure shows one embodiment of the resource allocation methods of the LTE MU-MIMO systems of the application
Flow.The flow includes：
Step S201：N number of UE of resource to be allocated quality of service metric is calculated, the quality of service metric is used for
Indicate UE quality of service requirements information；
In LTE system, resource allocation work is generally by base station（eNodeB）Complete.One base station may be at one
Faced in section to one or more UE（User terminal）Resource allocation is carried out, these wish to obtain the resource of base station distribution to realize
The UE of its business is the UE of resource to be allocated.The present embodiment calculates N number of UE of resource to be allocated quality of service（Quanlity
Of Service, QoS）Metric, to carry out subsequent operation using the quality of service metric.QoS metric value can reflect
UE QoS demand, i.e., by the size of QoS metric value, can indicate that UE quality of service requirements information.Reflect QoS metric
Data volume waiting for transmission, the urgency of data transfer such as UE bearer services priority, carrying etc. can be included by being worth the factor of size.
These factors can consider as factor arranged side by side on same level, can also be used as the factor with front and rear progressive relationship
Consider successively, these factors can also individually be considered in different embodiments.Considered in the way of front and rear progressive relationship
Exemplified by above-mentioned factor, it is possible, firstly, to distinguish different service priority, type of service different business priority is typically different, than
Such as, for the class business of VoIP/GBR, non-GBR tri-, the highest priority of usual VoIP business, GBR traffic is taken second place, non-GBR
Service priority is minimum；Secondly, in the case of service priority identical, further consider data transfer traffic demand and when
Between it is urgent, for example, user terminal UE1 and user terminal UE2, both of which carrying non-GBR business, but the non-of UE1 carryings
GBR1 download demand is 100Kbit/s, and the non-GBR2 of UE2 carryings download demand is 200Kbit/s, at this moment, due to
Non-GBR2 data transfer demands amount is big, can be preferably its allocation of transmission resources in resource allocation process.It is foregoing to anti-
The different factors of quality of service metric size are reflected, the specific meter by quality of service metric is had influence on is considered in a different manner
Formula is calculated, such as, a kind of simple consideration mode is directly to carry out Multiple factors being directly added after necessarily handling, i.e. business matter
Measuring value can calculate according to equation below：
WQoS=eTraffic demand parameter+eTime delay urgency parameter+e(9-QCI priority)
In above formula：Traffic demand parameter, which refers to UE, needs the data of transmission in the packet total bit number amount and business of buffering area
The ratio of traffic demand, the ratio is bigger, illustrates that the packet not sent of UE accumulation is more, QoS priority is higher；Time delay
Urgent parameter refers to the time that UE needs the data sent to be waited in buffering area, with the maximum delay time of the business need
Ratio, the ratio is bigger, illustrates that UE time delay is urgent higher, QoS priority is higher；QCI represents that QoS classification is identified, value
It is not higher that scope is generally the smaller expression service priority of 1~9, QCI.
Step S202：Quality of service metric maximum M is chosen according to the quality of service metric size to be allocated
The UE of resource constitutes pairing object set, and the M is less than N；
Determined after quality of service metric, each can be treated according to the size of quality of service metric by abovementioned steps
The UE of distribution resource is ranked up, and therefrom chooses the UE of maximum M resource to be allocated of quality of service metric, and they are made
To match the constitution element of object set.In actual application, it is noted here that 3 points：One is meter in some cases
Calculate after quality of service metric, can not be sorted during the UE of maximum M resource to be allocated of selectance value, and directly carry out
Determine M UE of maximum more afterwards two-by-two, that is to say, that sequence is only the alternative step that convenient selection is carried out.Two be
When carrying out M UE selection, the present embodiment requires that M value is less than N, i.e., preselect behaviour here with the UE that quality of service metric is carried out
Work is contractility pre-selection, can exclude those quality of service metrics by this pre-selected pattern smaller（Show its business demand
It is not so strong）UE enter in limited resource allocation process, so that it is guaranteed that nervous resource is applied to meet that
A bit most in the urgent need on the UE of resource.Three be that the specific value of M here can be determined according to actual conditions, as long as in this resource
The quantity for carrying out the UE of resource allocation in distribution immediately is less than the quantity for the UE for having resource allocation requirements.Under normal circumstances, M
It is contemplated that being determined after the calculation processing power of base station.Four be the present embodiment to match object set formation to provide one kind convenient
The measurement mode that quantizes, this mode to need carry out resource allocation UE neither " receive all ", also it is nonvoluntary selection one
The UE progress resource allocations of fixed number amount, the concrete condition for the UE business demands for having distinguished resource to be allocated of " not receiving all ", than
The service priority that is such as carried according to UE, current traffic demand, business urgency factor treat UE respectively, and nonvoluntary selection is few
It is that the application is not merely the quantity for reducing the resource allocation request of base station processing in N number of UE, and how is more
Reasonably distribute extremely limited resource.
Step S203：Pairing processing is carried out to the UE of the resource to be allocated in the pairing object set；
Determine after pairing object set, pairing processing, pairing processing can be carried out to the UE in the set under normal circumstances
Concrete mode can by any one can be matched in the way of be matched, as long as without prejudice to present invention purpose
Realization.Here " pairing " can not be understood merely as being limited between two UE, in this application, and pairing expresses one kind
Incidence relation between different UE a, UE can be matched with other one or more UE formation, that is to say, that a UE
There can be UE set UEi={ UEj, j ≠ i } with self pair.In actual application, if formd and a UE
Corresponding pairing set, can be without considering the repetition in different pairing set in the case where the disposal ability of base station allows
Problem, the disposal ability in base station can not be met when requiring, the corresponding pairing set of some UE can be had enter into a UE
When middle, its pairing with other UE is not considered further that.
Step S204：Identical running time-frequency resource is distributed to the UE matched.
UE for having had determined pair relationhip by abovementioned steps, then can be these UE distribution identical time-frequency moneys
Running time-frequency resource is shared in source, i.e. these UE.In actual application, except the UE to having matched directly carries out time-frequency resource allocating money
Outside source, a certain degree of investigation first can also be carried out to these UE, see that it carries out resource point if appropriate for using MU-MIMO modes
Match somebody with somebody, because some UE may be not appropriate for needing to use SU-MIMO using MU-MIMO modes, such as, in cell side
Its channel quality is poor under normal circumstances by the UE of edge, these UE, if part UE is also paired, the channel quality matched with it
Other preferable UE can produce larger inter-user interference to it, and this will reduce the transmission rate of edge customer, have influence on transmission
Quality.Therefore, the transmission quality in order to ensure the poor user terminal of these channel conditions, generally using SU-MIMOD
（Single-User MIMO, Single User MIMO）Transmission means.Before resource allocation operations are carried out, the application is preferably by these
Be not suitable for excluding outside resource allocation using MU-MIMO UE, specific implementation can be handled in accordance with the following steps：
The Signal to Interference plus Noise Ratio SINR of the UE for matching each resource to be allocated in object set is first calculated, then by the Signal to Interference plus Noise Ratio and in advance
If Signal to Interference plus Noise Ratio threshold value SINRtargetIt is compared, only will be greater than the UE of default Signal to Interference plus Noise Ratio threshold value as pairing object set
In resource to be allocated UE, if i.e. SINR<SINRtarget, then the UE belong to low SINR user, match somebody with somebody without virtual MIMO
To transmission, and SU-MIMO transmission means is directly used, to avoid the interference between multi-user, ensure channel quality poor user
Transmission quality；If SINR>=SINRtarget, carry out subsequent treatment.Need exist for explanation is above-mentioned to be transmitted sentencing for mode
It is disconnected to be carried out before UE pairing processing is carried out, it can so avoid not using the UE of MU-MIMO transmission mode to enter those
Row matching operation brings the waste of calculation process resource.
The present embodiment not only considers channel quality during UE time-frequency resource allocatings, and what is more important is by UE
Quality of service taken into account in the form of quality of service metric, as enter match object set a condition, this
Influence of the different user terminals UE own services demand to resource allocation is set rationally to be reflected, and then in resource-constrained situation
Under, it can preferably ensure to truly have the related service needed using resource to obtain resource in time, complete regular traffic.
Above-described embodiment is the basic implementation of the present application purpose, in actual application, based on various tools
Body situation can carry out some improvement to it, new embodiment be formed, to obtain other or superior technique effect.Example below
Property provide several improved procedures, those skilled in the art can obtain more on these example improvement modes basis
Mode of texturing.
One of improved procedure：The selecting step of calculation procedure and UE to be allocated to quality of service metric is in certain time length
Interior execution number of times is defined.
Base station carries out the operation of resource allocation generally very frequently, i.e., within a shorter time, may carry out multiple
Resource allocation operations, and often carried out in the way of previous embodiment first resource batch operation be required to carry out perform calculating treat
The quality of service metric value step for distributing N number of UE of resource and the UE for choosing M resources to be allocated constitute the step of pairing object set
Suddenly.However, in actual application, each UE quality of service measures value changes simultaneously in adjacent several resource allocation cycles
Less, that is to say, that even if carrying out quality of service metric calculation procedure and the quality of service metric choosing according to calculating again
The step of taking UE, less, that is, the element in pairing object set obtained almost may so perform foregoing two to its results change
Individual step meaning not too much big in addition to calculation resources are wasted.Therefore, the improved mode of the application is to limit both of the aforesaid step
Execution number of times within a certain period of time.Specifically：A pre-selection cycle is first set, is implemented within the pre-selection cycle according to foregoing
The mode of example may need to perform multiple abovementioned steps；Then the number of times that control both of the aforesaid step is performed within the pre-selection cycle is small
In pre-selection cycle and the quotient of resource allocation cycle, that is to say, that within the advance cycle, first resource distribution behaviour is often carried out originally
The operation for calculating quality of service metric and selection UE carried out is required to, restriction was only performed once or less than the pre-selection cycle
With the quotient of resource allocation cycle, latter resource allocation cycle needs to carry out UE pairings and during specific resource allocation, using once
Constituted through the UE steps by the M resources to be allocated for calculating quality of service metric and being chosen according to quality of service metric
Identical matches object set.UE is triggered during implementing, it may be considered that introduce UE timers, when the pre-selection cycle starts to enter
The foregoing pre- selection operation of row（Match the generation operation of object set）, setting timer initial value, such as pre-selection cycle are for 1s
1000 TTI, then timer initial value be set to 1000, often cross the TTI timer values and subtract 1, timer value represents this when being 0
End cycle is preselected, foregoing pairing object set is emptied, the pre- selection operations of UE are triggered, the process in a upper pre-selection cycle was repeated.
The two of improved procedure：By considering that channel relevancy, spectrum efficiency and resource requirement situation realize UE pairing
Processing.
As it was previously stated, the application can select any mode that can realize UE pairings to carry out UE pairing processing.But
It is that the UE come out to choose pairing is strictly the UE for needing most resource, and the application can contemplate based on channel relevancy, frequency spectrum
Efficiency and resource requirement situation etc. realize that pairing is handled.Specifically：, can be according to be paired when considering channel relevancy
UE deflection judge whether the necessary pair relationhip set up between UE.Usually required that between two UE that can be matched with compared with
Small channel relevancy, could so separate two transmission signals, and deflection then can be used for weighing between different UE
Correlation size.The UE of each resource to be allocated of the application first in pairing object set forming coefficient estimates that each is treated
Distribute the UE of resource azimuth（DoA）；By azimuth（DoA）Difference be more than default correlation threshold value Δ DoAtarget's
The UE of resource to be allocated carries out pairing processing, i.e., calculate i-th of UEi and j-th of UEj in pairing object set azimuth respectively
DoA, then asks for the two azimuthal difference DELTAsi,j=|DoAUEi-DoAUEj|, the difference asked for and predetermined threshold value are carried out
Compare, as long as Δi,j>ΔDoAtarget, then illustrate that the two UE pairings will not be caused interference with, i.e., final determination can be with i-th of UEi
Pairing UE collection be combined into UEj | Δi,j>ΔDoAtarget}., can be according to UE to be paired frequency when considering spectrum efficiency
Spectrum efficiency judges whether the necessary pair relationhip set up between UE.Specifically：First calculate each to be allocated in pairing object set
The UE of resource actual transmissions spectrum efficiency, is less than treating for default spectrum efficiency threshold value by the difference of actual transmissions spectrum efficiency
The UE for distributing resource carries out pairing processing., being averaged according to reflection resource requirement situation when considering resource requirement situation
Transmission rate determine with whether the necessary pair relationhip set up between UE.Its implementation is similar with spectrum efficiency, i.e.,：Calculate pairing
The UE of each resource to be allocated in object set average transmission rate, is less than Preset Transfer speed by the difference of average transmission rate
The UE of the resource to be allocated of rate threshold value carries out pairing processing.It should be noted that above three factor is introduced respectively,
In actual application, any two in three can be combined together and considered in the lump, certainly, relatively good mode is three
Person considers simultaneously, that is, the condition for meeting pair relationhip does not require nothing more than the differences of UE deflections and is greater than default correlation thresholding
Value, and, it is desirable to UE average transmission rate and the corresponding difference of actual transmissions spectrum efficiency is less than corresponding predetermined threshold value.
It is this while consider channel relevancy, the matching method of spectrum efficiency and resource requirement situation, taken into full account different user
Business demand, can effectively suppress the interference between multi-user, improve the availability of frequency spectrum.
The three of improved procedure：The resource allocation for having matched UE is realized by way of calculating scheduling metrics value.
As it was previously stated, after the pair relationhip between determining the UE of resource to be allocated, can directly carry out resource allocation
Operation.But, in actual application, the UE that can also have been matched to these carries out a minor sort, therefrom selects most to lean on
Preceding pairing UE carries out resource allocation, and this mode can be by most critical resource allocation to the UE for needing most resource.Specifically
When realizing, the UE that the application has been matched by the way of scheduling metrics value is calculated sorts, then selection scheduling metric
Maximum one or more pairs of UE carry out resource allocation.Here scheduling metrics value reflection pairing UE resource allocation order.Calculate
UE quality of service metric, channel quality status and UE average accumulated transmission rate are can contemplate during the value.Business matter
Measure value and may indicate that the urgent influence to dispatching metric of the priority and business demand of user, be i.e. UE priority is got over
Height, business demand is more urgent, then its scheduling metrics value is bigger；Channel quality status may indicate that channel quality to scheduling metric
Influence, i.e., be preferably that the good UE of channel quality carries out resource allocation in the case of other conditions identical, so can to the greatest extent can
System bandwidth, the availability of frequency spectrum of lifting system can effectively be utilized；Average accumulated transmission rate may indicate that transmission rate pair
The influence of scheduling metrics value, the factor can ensure the fairness serviced in cell between difference UE to a certain extent, i.e., it is put down
Add up transmission rate bigger, show that the subdistrict frequency band resource taken within past a period of time is more, it is contemplated that between UE
Fairness, therefore the TTI after will reduce the chance of its scheduling when being scheduled, and more distribute to local resource and do not enjoy
By the UE serviced.These three factors can be combined together to form scheduling metrics value in various necessary forms, such as, this Shen
Scheduling metrics value please be calculated using such a way：
In formula：WQosFor UE quality of service metric, WSINRFor UE channel quality status parameters, Rave（t）It is average for UE
Accumulation transmission rate, Wsche（ue）To have matched UE scheduling metrics value.
The above describe in detail the various embodiments of the resource allocation methods of the LTE MU-MIMO systems of the application with
And mode of texturing, correspondingly, present invention also provides the resource allocation device of LTE MU-MIMO systems.Referring to Fig. 3, the diagram
The composition structure of one embodiment of the resource allocation device of the LTE MU-MIMO systems of the application is gone out.The device includes：Industry
Quality metric value of being engaged in computing unit 301, pairing object select unit 302, pairing processing unit 303 and resource allocation unit 304,
Wherein：
Quality of service metric computing unit 301, the quality of service metric of N number of UE for calculating resource to be allocated,
The quality of service metric is used for the quality of service requirements information for indicating UE；
Object select unit 302 is matched, for choosing quality of service metric according to the quality of service metric size
The UE of M maximum resources to be allocated constitutes pairing object set, and the M is less than N；
Processing unit 303 is matched, pairing processing is carried out for the UE to the resource to be allocated in the pairing object set；
Resource allocation unit 304, for distributing identical running time-frequency resource to the UE of pairing.
The course of work of said apparatus embodiment is：Money to be allocated is first calculated by quality of service metric computing unit 301
N number of UE in source quality of service metric, then, pairing object select unit 302 are selected according to the quality of service metric of calculating
The UE of maximum M resource to be allocated of quality of service metric is taken to constitute pairing object set, then by 303 pairs of institutes of pairing processing unit
The UE for stating the resource to be allocated in pairing object set carries out pairing processing, finally, and resource allocation unit 304 is distributed to the UE of pairing
Identical running time-frequency resource.The device embodiment can obtain the constructed effect with preceding method embodiment, to avoid repeating,
Here no longer superfluous words.
Said apparatus is actually needed based on some, can increase specific functional unit to realize corresponding purpose.Such as,
Aforementioned means embodiment can also include timing unit and perform number of times control unit, wherein：Timing unit, for setting pre-selection
Cycle；Number of times control unit is performed, for controlling within the pre-selection cycle quality of service metric computing unit to perform to calculate to treat point
The quality of service metric and pairing object select unit of N number of UE with resource, which is performed, chooses the maximum M of quality of service metric
The number of times for the step of UE of individual resource to be allocated constitutes pairing object set is less than the business of the pre-selection cycle and resource allocation cycle
Value.By increasing the two units, each resource allocation cycle can be avoided to call quality of service metric to calculate after starting
Unit calculate the calculating operation of quality of service metric, and calls pairing object select unit to carry out quality of service measurement
It is worth the selection operation of M maximum UE, and due to the quality of service of UE in several resource allocation cycles adjacent under normal circumstances
Measure value changes less, that is, the pairing object set ultimately formed is not in too big discrepancy, therefore, without above-mentioned behaviour
Work can't bring bad result to the distribution of resource, on the contrary, substantial amounts of calculation process resource then can be saved for base station.
Function Extension and technology effect except said apparatus embodiment can be realized by increasing specific functional unit
Fruit improves outer, the different specific implementations of different units in said apparatus embodiment, it is also possible to which its function and technology are imitated
Fruit impacts, and then causes the concrete structure of said apparatus embodiment to change.Such as, above-mentioned pairing processing unit 303
The azimuth estimation pairing processing subelement 3032 of subelement 3031 and first can be specifically included, and/or, speed/efficiency calculation
The pairing processing subelement 3034 of subelement 3033 and second, wherein：Subelement 3031 is estimated at azimuth, for according to pairing pair
As the UE of each resource to be allocated of concentration forming coefficient estimates the UE of each resource to be allocated azimuth；At first pairing
Subelement 3032 is managed, is carried out for azimuthal difference to be more than to the UE of resource to be allocated of default correlation threshold value at pairing
Reason；Speed/efficiency calculation subelement 3033, the average transmission of the UE for calculating each resource to be allocated in pairing object set
Speed and/or actual transmissions spectrum efficiency；Second pairing processing subelement 3034, for the difference of average transmission rate to be less than
The difference of Preset Transfer rate threshold value and/or actual transmissions spectrum efficiency is less than the money to be allocated of default spectrum efficiency threshold value
The UE in source carries out pairing processing.Pairing processing of speed/efficiency calculation subelement 3033 and second in above-mentioned each component units
Unit 3034 can be present in a device simultaneously with the azimuth estimation pairing processing subelement 3032 of subelement 3031 and first
Among embodiment, it can also be respectively present among different device embodiments.Certainly, in actual application, it is contemplated that
The optimization of technique effect, can be integrated in same device, i.e., consider channel relevancy, spectrum efficiency and biography simultaneously
Defeated each factor of efficiency.
Also such as, the resource allocation unit 304 in said apparatus embodiment can be specifically included：Scheduling metrics value calculates son
Unit 3041 and resource allocation subelement 3042, wherein：Scheduling metrics value computation subunit 3041, for calculating the UE matched
Scheduling metrics value, the scheduling metrics value is used to be designated as the order that the UE that has matched carries out resource allocation；Resource allocation
Unit 3042, identical running time-frequency resource is distributed for the size according to the scheduling metrics value to the UE matched.
It should be noted that：For the simplicity of narration, above-described embodiment of this specification and the various modifications of embodiment
What implementation was stressed is all identical similar between the difference with other embodiment or mode of texturing, each situation
Part mutually referring to.For several improved procedures of device embodiment, because it is substantially similar to method reality
Example is applied, so describing fairly simple, the relevent part can refer to the partial explaination of embodiments of method.Device described above
The each unit of embodiment can be or may not be physically separate, can both be located at place, or can also
It is distributed under multiple network environments.In actual application, part therein can be selected according to the actual needs or complete
Portion's unit realizes the purpose of this embodiment scheme, those of ordinary skill in the art without creative efforts,
It is appreciated that and implements.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (7)
1. a kind of resource allocation methods of LTE MU-MIMO systems, it is characterised in that this method includes：
N number of UE of resource to be allocated quality of service metric is calculated, the quality of service metric is used for the business for indicating UE
Quality requirement information；
The UE for choosing maximum M resource to be allocated of quality of service metric according to the quality of service metric size, which is constituted, to be matched somebody with somebody
To object set, the M is less than N；
Pairing processing is carried out to the UE of the resource to be allocated in the pairing object set；
Identical running time-frequency resource is distributed to the UE matched；
Wherein, the UE progress pairing processing of the resource to be allocated in the pairing object set is specifically included:
The average transmission rate for the UE for matching each resource to be allocated in object set is calculated, the difference of average transmission rate is small
Pairing processing is carried out in the UE of Preset Transfer rate threshold value；Or,
The average transmission rate and actual transmissions spectrum efficiency for the UE for matching each resource to be allocated in object set are calculated, will be flat
The difference of equal transmission rate is less than Preset Transfer rate threshold value and the difference of actual transmissions spectrum efficiency is less than default frequency spectrum effect
The UE of the resource to be allocated of rate threshold value carries out pairing processing；Or,
The average transmission rate and actual transmissions spectrum efficiency for the UE for matching each resource to be allocated in object set are calculated, according to
The UE of each resource to be allocated in pairing object set forming coefficient estimates the UE of each resource to be allocated azimuth；Will be flat
The difference of equal transmission rate is less than Preset Transfer rate threshold value, the difference of actual transmissions spectrum efficiency and is less than default spectrum efficiency
The UE for the resource to be allocated that threshold value and azimuthal difference are more than default correlation threshold value carries out pairing processing；
Methods described also includes：
The pre-selection cycle is set, the N number of UE for calculating resource to be allocated quality of service metric and selection are performed within the pre-selection cycle
The number of times for the step of UE of maximum M resource to be allocated of quality of service metric constitutes pairing object set is less than the pre-selection week
Phase and the quotient of resource allocation cycle.
2. according to the method described in claim 1, it is characterised in that the quality of service metric is preferential by UE bearer services
Level, etc. data volume waiting for transmission and/or data transfer urgent decision.
3. the method according to any one of claim 1 to 2, it is characterised in that described to distribute phase to the UE matched
Same running time-frequency resource is specifically included：
The UE matched scheduling metrics value is calculated, the UE that the scheduling metrics value is used to be designated as having matched carries out resource allocation
Order；
According to the size of the scheduling metrics value identical running time-frequency resource is distributed to the UE matched.
4. method according to claim 3, it is characterised in that the scheduling metrics value for the UE that the calculating has been matched specifically is pressed
Calculated according to following formula：
<mrow>
<msub>
<mi>W</mi>
<mrow>
<mi>s</mi>
<mi>c</mi>
<mi>h</mi>
<mi>e</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>u</mi>
<mi>e</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>W</mi>
<mrow>
<mi>Q</mi>
<mi>o</mi>
<mi>S</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>W</mi>
<mrow>
<mi>S</mi>
<mi>I</mi>
<mi>N</mi>
<mi>R</mi>
</mrow>
</msub>
</mrow>
<mrow>
<msub>
<mi>R</mi>
<mrow>
<mi>a</mi>
<mi>v</mi>
<mi>e</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
</mrow>
In formula：WQosFor UE quality of service metric, WSINRFor UE channel quality status parameters, Rave(t) passed for UE average accumulateds
Defeated speed, Wsche(ue) it is to have matched UE scheduling metrics value.
5. method according to claim 3, it is characterised in that the UE of the resource to be allocated in the pairing object set
Carry out before pairing processing, methods described also includes：
Calculate the Signal to Interference plus Noise Ratio of the UE for matching each resource to be allocated in object set；
Signal to Interference plus Noise Ratio is more than to the UE of default Signal to Interference plus Noise Ratio threshold value as the UE of the resource to be allocated in pairing object set.
6. a kind of resource allocation device of LTE MU-MIMO systems, it is characterised in that the device includes：Quality of service metric
Computing unit, pairing object select unit, pairing processing unit and resource allocation unit, wherein：
The quality of service metric computing unit, the quality of service metric of N number of UE for calculating resource to be allocated is described
Quality of service metric is used for the quality of service requirements information for indicating UE；
The pairing object select unit, it is maximum for choosing quality of service metric according to the quality of service metric size
The UE of M resources to be allocated constitute pairing object set, the M is less than N；
The pairing processing unit, pairing processing is carried out for the UE to the resource to be allocated in the pairing object set；
The resource allocation unit, for distributing identical running time-frequency resource to the UE of pairing；
Wherein, the pairing processing unit specifically includes azimuth estimation subelement, the first pairing processing subelement, speed/effect
Rate computation subunit and the second pairing processing subelement；Or, the pairing processing unit specifically includes speed/efficiency calculation son list
Member and the second pairing processing subelement；
Wherein：
Subelement is estimated at the azimuth, and the forming coefficient for the UE of each resource to be allocated in pairing object set is estimated
Calculate the UE of each resource to be allocated azimuth；
The first pairing processing subelement, the resource to be allocated for azimuthal difference to be more than to default correlation threshold value
UE carry out pairing processing；
The speed/efficiency calculation subelement, the average biography of the UE for calculating each resource to be allocated in pairing object set
Defeated speed, or, average transmission rate and actual transmissions spectrum efficiency；
The second pairing processing subelement, for the difference of average transmission rate to be less than into Preset Transfer rate threshold value and reality
The UE that the difference of border transmission spectrum efficiency is less than the resource to be allocated of default spectrum efficiency threshold value carries out pairing processing；
Wherein, described device also includes timing unit and performs number of times control unit, wherein：
The timing unit, for setting the pre-selection cycle；
The execution number of times control unit, for controlling the quality of service metric computing unit execution calculating within the pre-selection cycle to treat
N number of UE of distribution resource quality of service metric and pairing object select unit, which is performed, chooses quality of service metric maximum
The number of times for the step of UE of M resources to be allocated constitutes pairing object set is less than the business of the pre-selection cycle and resource allocation cycle
Value.
7. device according to claim 6, it is characterised in that the resource allocation unit is specifically included：Scheduling metrics value
Computation subunit and resource allocation subelement, wherein：
The scheduling metrics value computation subunit, the scheduling metrics value for calculating the UE matched, the scheduling metrics value is used
The order of resource allocation is carried out in the UE for being designated as having matched；
The resource allocation subelement, identical time-frequency is distributed for the size according to the scheduling metrics value to the UE matched
Resource.
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| CN106685494B (en) * | 2016-12-27 | 2020-06-23 | 京信通信系统（中国）有限公司 | Packet scheduling method and device in MU-MIMO system |
| CN108668363A (en) * | 2017-03-28 | 2018-10-16 | 索尼公司 | Electronic equipment in wireless communication system and method |
| CN113382475B (en) * | 2020-03-10 | 2022-12-30 | 大唐移动通信设备有限公司 | Resource scheduling method and device based on MUMIMO |
| CN115037342B (en) * | 2022-07-13 | 2023-09-05 | 中国联合网络通信集团有限公司 | UE pairing method, device and storage medium |
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| CN102858015A (en) * | 2011-06-30 | 2013-01-02 | 普天信息技术研究院有限公司 | Multi-service scheduling method |
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