CN106304345A - A kind of uplink resource allocating method, base station and user terminal - Google Patents
A kind of uplink resource allocating method, base station and user terminal Download PDFInfo
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- CN106304345A CN106304345A CN201510251325.1A CN201510251325A CN106304345A CN 106304345 A CN106304345 A CN 106304345A CN 201510251325 A CN201510251325 A CN 201510251325A CN 106304345 A CN106304345 A CN 106304345A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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Abstract
The invention discloses a kind of uplink resource allocating method, base station and user terminal, obtain for indicate how carry out the resource allocation information of ascending resource distribution including base station side；Send uplink according to the resource allocation information obtained to user side and indicate information.The technical scheme provided by the present invention is visible, before user side carries out transmitting uplink data, by to up minimum scheduling number of users and the consideration of LBT transmission success rate, select the user that LBT transmission success rate is high is scheduled user as far as possible, the most undoubtedly on the premise of guaranteeing fairness, has been avoided as much as the waste to ascending resource, simultaneously, also reduce LBT collision probability, decrease user and wait time delay, thus improve channel capacity.
Description
Technical field
The present invention relates to LAA technology, espespecially a kind of uplink resource allocating method, base station and user terminal.
Background technology
Along with senior LTE (LAA, LTE-Advanced, or claim LTE-U) will the advantage of LTE open up
Exhibition is to the proposition of the concept of unauthorized frequency range, and Long Term Evolution (LTE) system is by unauthorized frequency range
Use, LTE system handling capacity can be greatly improved, and also can cut operating costs.But, if according to
The control requirement of dry countries and regions, when using unauthorized frequency range, need to introduce and first listen and say afterwards (LBT,
Listen Before Talk) channel the most first intercepted by mechanism, determines that whether channel is according to intercepted result
Available channel, if available channel, then can carry out upstream or downstream business datum, control signaling
Transmission.LAA dispose in, LTE system use unauthorized frequency range, have control requirement country,
District, it is also desirable to follow system operation based on LBT mechanism.
For LTE uplink, because itself feature, generally carried out resource distribution by base station, and
Ascending resource is distributed information by the uplink authorization (UL Grant) on descending sub frame and notifies to use by base station
Family；After user receives UL Grant, according to the instruction of UL Grant, when corresponding, frequently in resource
Send business datum.According to current LTE protocol requirement, send descending sub frame and its indication of UL Grant
The transmission Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel) shown upper
At least 4 sub-frame interval between row subframe.Assume that base station carries out ascending resource distribution in subframe n,
UL Grant is sent to user by subframe (n+1), and user can carry out up number the soonest in subframe (n+5)
According to transmission, say, that carry out ascending resource from base station and be assigned to user and carry out upstream data transmission,
Few time delay also having 5 subframes, can send smoothly if up data, pay such time delay cost
It is effective, but, it is contemplated that LBT mechanism, probably because the failure of LBT competitive channel, is so used
Family can not be as scheduled at subframe (n+5) upper transmission upstream data, then, it is clear that waste subframe (n+5)
Ascending resource, add user simultaneously and wait time delay.Even if base station is determining channel by LBT mechanism
Available, but when carrying out upstream data transmission after the time delay i.e. user of 5 subframes, it is defined as before
Available channel may not currently still can use, and therefore, if now channel is the most unavailable, user is also
Can not be upper that send upstream data in subframe (n+5) as scheduled, waste the up money of subframe (n+5) equally
Source, too increases user simultaneously and waits time delay.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of uplink resource allocating method, base station and use
Family terminal, it is possible to be avoided as much as the waste to ascending resource, reduces user and waits time delay, thus carry
High channel capacity.
In order to reach the object of the invention, the invention provides a kind of uplink resource allocating method, including: base
Stand side acquisition for indicate how carry out the resource allocation information of ascending resource distribution；
Send uplink according to the resource allocation information obtained to user side and indicate information.
Alternatively, described resource allocation information includes up minimum scheduling number of users and/or first listens and say LBT afterwards
Transmission success rate.
Alternatively, described acquisition resource allocation information includes:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；
And/or,
Channel idle is intercepted according to the LBT CCA of each user corresponding in the object statistics time in described base station
Number of times and LBT CCA intercept channel number of times, and the LBT CCA calculating targeted customer intercepts channel sky
The LBT CCA of not busy number of times and user intercepts the ratio of channel number of times, obtains targeted customer at object statistics
LBT transmission success rate in time；Or,
Described base station receives the LBT CCA from the user side self of user side by eating dishes without rice or wine and intercepts channel
Idle number of times and LBT CCA intercept number of times；Calculated LBT CCA intercepts channel idle time
The LBT CCA of number and user intercepts the ratio of channel number of times, obtains corresponding user within the object time
LBT transmission success rate；Or,
Described base station receives the LBT transmission success rate calculating from user side and quantifying by eating dishes without rice or wine.
Alternatively, also include before the method: it is upper that described base station is followed in the resource allocation information of acquisition
The minimum scheduling number of users of row carries out ascending resource distribution to user；Described base station carries out up LBT and intercepts,
If intercepted result is channel busy, then wait that next CCA time slot is initiated new LBT again and intercepted, directly
Certain CCA intercepted result to base station is channel idle, then letter is occupied by sending Seize ACK message in base station
Road；Meanwhile,
The described uplink instruction information that sends to user side according to the resource allocation information obtained includes:
Described base station waits nearest descending sub frame, is given in the user's transmission being scheduled by this descending sub frame
Row transmission instruction information, wherein, described uplink instruction information includes expression continuously several
Send the resource allocation information of uplink business data and continuous occupied information on sub-frame of uplink, take letter continuously
Breath is determined by the up minimum scheduling number of users in the resource allocation information obtained.
Alternatively, also include before the method: described base station is according to the LBT in the resource allocation information obtained
Transmission success rate, arranges the dispatching priority of corresponding user, and follows described according to LBT transmission success rate
Up minimum scheduling number of users in the resource allocation information obtained, based on each LBT transmission success obtained
Rate carries out ascending resource distribution to corresponding user；
The described uplink instruction information that sends to user side according to the resource allocation information obtained includes:
Described base station receives the Seize ACK message of user side busy channel, according to scheduling result, by recently
Descending sub frame send uplink instruction information to the user that is scheduled；Wherein, in described uplink
Instruction information increases newly for representing that this uplink instruction information correspondence user is master scheduling user or good fortune tune
The major-minor identification field of degree user.
Alternatively, described uplink instruction information comprises the continuous occupied information to unauthorized channel,
The bit number of occupied information is log continuously2(N) round up, wherein, when LBT maximum takies continuously
A length of many bits.
Alternatively, described uplink instruction information does not comprise the continuous occupied information to unauthorized channel；
The method also includes: a newly-increased territory in each uplink instruction information, is used to refer on this
The sub-frame of uplink sequence number that row transmission instruction information is corresponding.
Alternatively, described uplink instruction information is uplink grant UL Grant.
Alternatively, the described resource allocation information according to acquisition sends uplink instruction information to user side
Afterwards, described reception from user side according to uplink instruction information send upstream data before, should
Method also includes:
The described uplink that user side receives from described base station side indicates information, according to resource therein
Distribution instruction, and take instruction continuously, follow-up several sub-frame of uplink continuously send uplink service
Data.
Alternatively, the method also includes: described base station receives from user side according to uplink instruction letter
The upstream data that breath sends.
Alternatively, the described resource allocation information according to acquisition sends uplink instruction information to user side
Afterwards, described reception from user side according to uplink instruction information send upstream data before, should
Method also includes:
The uplink that user side receives from described base station side indicates information, carries out up LBT and intercepts,
If listening to the master scheduling user of channel idle, directly transmitting Seize ACK message and carrying out busy channel；If detectd
Hearing the master scheduling user of channel busy, this CCA intercepts failure, then wait next CCA time slot again
Initiate new LBT to intercept；If listening to the auxiliary scheduling user of channel idle, also send Seize ACK message
Busy channel；Now,
Described base station, according to the Seize ACK message detected, is authorizing on carrier wave all transmission busy channels
Main and auxiliary user sends permission transmission mark；
Mark is transmitted according to the permission from described base station side in user side, allows allowing transmission mark display
Time, determine and send upstream data in corresponding subframe；When allowing transmission mark to be shown as not allowing, vertical
I.e. interrupt the transmission of Seize ACK message, discharge channel.
Alternatively, if master scheduling user and the auxiliary scheduling success of CCA per family, the method also includes: institute
State base station side and authorizing dynamic signaling instruction on carrier wave: use MU-MIMO mode allow master scheduling user and
Auxiliary scheduling user is transmitted, or, only allow master scheduling user to transmit described upstream data；
If described master scheduling user CCA success, described auxiliary scheduling user CCA is unsuccessful, the method
Also include: described base station side is authorizing dynamic signaling instruction on carrier wave: by master scheduling, user sends on described
Row data；
If described master scheduling user CCA is unsuccessful, auxiliary scheduling user CCA success, the method is also wrapped
Include: described base station side is authorizing dynamic signaling instruction on carrier wave: by pair, scheduling user sends described upper line number
According to.
The present invention discloses again a kind of base station, at least includes acquisition module, indicating module, transport module；
Wherein,
Acquisition module, for obtaining for indicate how carry out the resource allocation information of ascending resource distribution；
Indicating module, for according to the resource allocation information obtained, sends uplink instruction to user side
Information.
Alternatively, described resource allocation information includes up minimum scheduling number of users and/or LBT transmission success
Rate；Described acquisition module specifically for:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；
And/or,
All service users in adding up the object statistics time (such as nearest a period of time) pre-set respectively
LBT transmission success rate: preserve the LBT CCA of corresponding each user in the object statistics time and intercept letter
Road free time number of times and LBT CCA intercept channel number of times, and the LBT CCA calculating targeted customer intercepts
The LBT CCA of channel idle number of times and user intercepts the ratio of channel number of times, obtains targeted customer at mesh
LBT transmission success rate in mark timing statistics；Or,
The LBT CCA receiving the user side self come from user side by transmission of eating dishes without rice or wine intercepts channel sky
Not busy number of times and LBT CCA intercept number of times；Calculate LBT CCA and intercept channel idle number of times and user
LBT CCA intercept the ratio of channel number of times, obtain corresponding user LBT transmission within the object time
Success rate；Or,
Receive after the user side quantization within the object time certainly of all user sides in administrative area
LBT transmission success rate.
Alternatively, described base station also includes that first intercepts module, is used for carrying out up LBT and intercepts, if
Intercepted result is channel busy, then wait that next CCA time slot is initiated new LBT again and intercepted, until base
Certain the CCA intercepted result stood is channel idle, then send Seize ACK message and occupy channel, refer to notice
Show module；Correspondingly,
Described indicating module specifically for: follow in the resource allocation information of acquisition up minimum scheduling use
Amount carries out ascending resource distribution to user；Wait nearest descending sub frame, by this descending sub frame to quilt
The user of scheduling sends uplink instruction information, wherein, includes expression in uplink instruction information
Several sub-frame of uplink continuously send the resource allocation information of uplink business data and take letter continuously
Breath.Wherein, continuous occupied information is true by the up minimum scheduling number of users in the resource allocation information obtained
Fixed.
Alternatively, described indicating module specifically for:
According to the LBT transmission success rate in the resource allocation information obtained, set according to LBT transmission success rate
Put the dispatching priority of corresponding user, the priority that the user of the biggest correspondence of LBT transmission success rate is scheduled
The highest, and follow the up minimum scheduling number of users in the resource allocation information of acquisition, based on obtain
Each LBT transmission success rate carries out ascending resource distribution, to determine final scheduling result to corresponding user；
Receive the Seize ACK message of user side busy channel, given the use being scheduled by nearest descending sub frame
Family sends described uplink instruction information.Wherein, increase newly in described uplink instruction information and be used for
Represent that this uplink instruction information correspondence user is master scheduling user or the major-minor mark of good fortune scheduling user
Territory.
Alternatively, described uplink instruction information is uplink grant UL Grant.
The present invention discloses a kind of user terminal again, at least includes receiver module, sending module；
Wherein, receiver module, indicate information for receiving the uplink from base station side；
Sending module, for sending uplink business data according to the uplink instruction information received.
Alternatively, described sending module specifically for: according to the resource in described uplink instruction information
Distribution instruction, and take instruction continuously, follow-up several sub-frame of uplink continuously send uplink service
Data.
The invention also discloses a kind of user terminal, at least include receiver module, sending module, and second
Intercept module；Wherein,
Receiver module, indicates information for receiving the uplink from base station side, notifies that second intercepts
Module；Mark is transmitted according to the permission from base station side, when allowing transmission mark display to allow, notice
Sending module；When allowing transmission mark to be shown as not allowing, it is immediately terminated the transmission of Seize ACK message, releases
Put channel；
Sending module, for receiving the notice from receiver module, sends line number in corresponding subframe
According to；
Second intercepts module, is used for carrying out up LBT and intercepts, if listening to the master scheduling of channel idle
User, directly transmits Seize ACK message and carrys out busy channel, to notify the indicating module of base station side；If intercepted
To the master scheduling user of channel busy, this CCA intercepts failure, then wait that next CCA time slot is sent out again
Play new LBT to intercept；If listening to the auxiliary scheduling user of channel idle, also sending Seize ACK message and accounting for
With channel, to notify the indicating module of base station side.
Compared with prior art, technical scheme includes that base station side obtains for indicate how on carrying out
The resource allocation information of row resource distribution；According to the resource allocation information obtained to the up biography of user side transmission
Defeated instruction information.The technical scheme provided by the present invention is visible, before user side carries out transmitting uplink data,
By to up minimum scheduling number of users and the consideration of LBT transmission success rate, select LBT to transmit into as far as possible
The user that power is high is scheduled user, the most undoubtedly on the premise of guaranteeing fairness, keeps away as much as possible
Exempt from the waste to ascending resource, meanwhile, also reduced LBT collision probability, decrease user when waiting
Prolong, thus improve channel capacity.
Other features and advantages of the present invention will illustrate in the following description, and, partly from froming the perspective of
Bright book becomes apparent, or understands by implementing the present invention.The purpose of the present invention is excellent with other
Point can be realized by structure specifically noted in description, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes of the application
Point, the schematic description and description of the present invention is used for explaining the present invention, is not intended that the present invention's
Improper restriction.In the accompanying drawings:
Fig. 1 is the flow chart of uplink resource allocating method of the present invention；
Fig. 2 is the schematic flow sheet of the first embodiment of uplink resource allocating method of the present invention；
Fig. 3 is the schematic flow sheet of the second embodiment of uplink resource allocating method of the present invention；
Fig. 4 is base station and the composition structural representation of user terminal that the present invention realizes ascending resource distribution.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing
Embodiments of the invention are described in detail.It should be noted that in the case of not conflicting, this Shen
Embodiment in please and the feature in embodiment can mutual combination in any.
Present inventor finds, it is contemplated that the efficiency of LBT mechanism, competes channel at a LBT
After, it may be preferable to taking channel continuously, this is either for improving LBT efficiency, or reduces
Users etc. are to be delayed, are all good, but the continuous busy channel of LBT, may divide with ascending resource
Joining result to conflict mutually, this is also a problem needing to solve.
The application aims to provide a kind of ascending resource distribution mechanism, it is possible on the premise of guaranteeing fairness,
The fewest waste ascending resource, meanwhile, also can reduce LBT collision probability, reduces user's wait and prolongs
Late, and then channel capacity is maximized.
Fig. 1 is the flow chart of uplink resource allocating method of the present invention, as it is shown in figure 1, include:
Step 100: base station side obtains for indicate how carry out the resource allocation information of ascending resource distribution.
Resource allocation information in this step includes up minimum scheduling number of users and/or LBT transmission success
Rate.Wherein,
Up minimum scheduling number of users is minimum scheduling number of users during base station side execution uplink scheduling, also
That is, all candidate's uplink user, under the constraint of up minimum scheduling number of users, are carried out by base station side
Scheduling, the number of users being finally scheduled in unauthorized frequency range is more than or equal to minimum scheduling number of users.
LBT transmission success rate be object statistics time internal object user LBT clear channel assessment (CCA) (CCA,
Clear Channel Assessment) the LBT CCA that intercepts channel idle number of times and targeted customer intercepts letter
The ratio of road number of times, is targeted customer's LBT transmission success rate within the object statistics time.
Acquisition resource allocation information in this step includes:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；Wherein, static configuration is permissible
It is to be realized by the fixing up minimum scheduling number of users being pre-configured with；It can be logical for being semi-statically configured
Cross the fixing up minimum scheduling number of users as periodically change pre-sets to realize；Dynamically configuration
Can be to adjust up minimum tune in real time according to factors such as offered load, network deployment scenarios, user density
Degree number of users；Specifically how to realize to be configured according to actual application scenarios or adjusting, be not used to
Limit protection scope of the present invention.
And/or,
Base station add up the object statistics time (such as nearest a period of time) pre-set respectively in all services
The LBT transmission success rate of user: the LBT CCA of corresponding each user in the preservation object statistics time of base station
Intercept channel idle number of times and LBT CCA intercepts channel number of times, calculate the LBT of targeted customer
CCA intercepts the LBT CCA of channel idle number of times and user and intercepts the ratio of channel number of times, i.e. obtains mesh
Mark user's LBT transmission success rate within the object statistics time；Or,
In the object statistics time that the preservation of user side pre-sets, the LBT CCA of self intercepts channel idle
Number of times and LBT CCA intercept number of times, by eating dishes without rice or wine, the LBT CCA of self obtained are intercepted letter
Road free time number of times and LBT CCA intercept number of times and are sent to the base station of service；Base station calculates LBT CCA
The LBT CCA intercepting channel idle number of times and user intercepts the ratio of channel number of times, obtains corresponding user
LBT transmission success rate within the object time；Or,
In the object statistics time that the preservation of user side pre-sets, the LBT CCA of self intercepts channel idle
Number of times and LBT CCA intercept number of times, calculate LBT CCA and intercept channel idle number of times and user's
LBT CCA intercepts the ratio of channel number of times and quantifies, and obtains from the LBT transmission within the object time
Success rate；By eating dishes without rice or wine, the LBT transmission success rate obtained is sent to the base station of service；Base station obtains institute
The LBT transmission success rate of all users in the range of linchpin.Wherein, quantization can quantify according to existing certain
Value is quantified by mode, the most not to how quantifying to be defined.
Step 101: send uplink according to the resource allocation information obtained to user side and indicate information.
Also include before this step: the up minimum scheduling that base station is followed in the resource allocation information of acquisition is used
Amount carries out ascending resource distribution to user；Base station carries out up LBT and intercepts, if intercepted result is letter
Road hurries, then wait that next CCA time slot is initiated new LBT again and intercepted, until certain CCA of base station
Intercepted result is channel idle, then channel is occupied by sending Seize ACK message in base station；Meanwhile,
This step specifically includes: base station waits nearest descending sub frame, is scheduled by this descending sub frame
User send uplink instruction information, wherein, uplink instruction information can be UL Grant,
Uplink instruction information includes expression on several sub-frame of uplink continuously, sends uplink business data
Resource allocation information and continuous occupied information.Wherein, continuous occupied information is by the resource distribution letter obtained
Up minimum scheduling number of users in breath determines.
Or,
Also include before this step: according to the LBT transmission success rate in the resource allocation information obtained, press
The dispatching priority of corresponding user is set according to LBT transmission success rate, the biggest correspondence of LBT transmission success rate
The priority that user is scheduled is the highest, and follows the up minimum scheduling in the resource allocation information of acquisition
Number of users, carries out ascending resource distribution based on each LBT transmission success rate obtained to corresponding user.Its
In, for the user that LBT transmission success rate value is higher, dispatching priority can be improved；Final to determine
Scheduling result such as scheduled which user, be all respectively allocated which resource etc., the most how to dispatch genus
In the known technology of those skilled in the art, the protection domain being not intended to limit the present invention, it is emphasized that
Be to consider LBT transmission success rate.This step specifically includes: base station receives user side busy channel
Seize ACK message, according to scheduling result, send up to the user being scheduled by nearest descending sub frame
Transmission instruction information.Wherein, uplink instruction information can be UL Grant.In UL Grant newly
Increasing major-minor identification field, major-minor identification field can be 1 bit, such as: major-minor identification field is 1, and representing should
UL Grant correspondence master scheduling user；Major-minor identification field is 0, represents that the corresponding auxiliary scheduling of this UL Grant is used
Family, otherwise or.
The LBT also increasing M-bit in UL Grant newly ends symbol restriction of domain, LBT cut-off symbol limit
The bit number that territory processed takies can be 1 to arriveIn arbitrary value.Wherein, M is unauthorized
The number of users being scheduled in frequency range, numeral 14 be current agreement specify a subframe lengths and a son
Frame includes 14 symbols.It should be noted which symbol of base station side user to be indicated side is on CCA
Limit, if i.e. can not compete channel before upper limit symbol, does not allows for sending out data again, and this refers to
Show it can is semi-static or dynamic, can indicate in UL Grant as above, it is also possible to
Indicating in RRC signaling, bit number used can be that [1 bit, round up log2(in sub-frame of uplink
Number of symbols) in any one numerical value.
It should be noted that intercept because being performed up LBT by user, it is thus possible to occur by base station
User in scheduling cannot compete the situation of channel because LBT intercepts failure, therefore, and base in the present invention
Scheduling backup has been done at station, and the most each frequency domain dispatching unit can dispatch two users, the most mentioned above
Master scheduling user, auxiliary scheduling user.
Further, uplink instruction information i.e. unauthorized channel resource take instruction information, can
To comprise the continuous occupied information to unauthorized channel, this indication signaling can be 1 bit, and mark is continuously
Take or discontinuous take.Here, suppose that LBT maximum a length of N number of subframe or OFDM when taking continuously
Symbol, then the bit number of this continuous occupied information is log2(N) round up, wherein, LBT is maximum
A length of many bits when taking continuously,
Uplink instruction information i.e. unauthorized channel resource take instruction information, if do not wrapped
Containing the continuous occupied information to unauthorized channel, when ascending-descending subframes configuration is unbalanced, a descending son
Multiple UL Grant may be sent, respectively corresponding multiple continuous print sub-frame of uplink, side the most of the present invention in frame
Method also includes: a newly-increased territory in each UL Grant, is used to refer to corresponding up of this UL Grant
Subframe sequence number.Wherein, UL Grant can be polytype, can be corresponding multiple up (U)
Subframe, it is also possible to be corresponding 1 U subframe, thus solve scheduling and CCA continuously and compete it
Between conflict.
Further, the inventive method also includes: step 102: receive from user side according to uplink
The upstream data that instruction information sends.
After step 101, before step 102, the inventive method also includes:
User side receives after the UL Grant of base station side, according to resource therein distribution instruction, and
Take instruction continuously, follow-up several sub-frame of uplink continuously send uplink business data.
Or,
User side receives after the UL Grant of base station side, carries out up LBT and intercepts, if listened to
The master scheduling user of channel idle, directly transmits Seize ACK message and carrys out busy channel；If listening to channel busy
Master scheduling user, this CCA intercepts failure, then wait that next CCA time slot is initiated new again
LBT intercepts；If listening to the auxiliary scheduling user of channel idle, also sending Seize ACK message and taking letter
Road；Now,
Base station is according to the Seize ACK message detected, it will be appreciated which user LBT intercepts competition and arrives channel,
Base station is in the permission transmission authorizing on carrier wave the main and auxiliary user to all transmission busy channels to send 1 bit
Mark, is such as that 1 expression allows this user to send number according to UL Grant instruction on corresponding sub-frame of uplink
According to, it is that the UL Grant that this user of 0 expression receives cancels；Otherwise or；Wherein, it is allowed to transmission mark
Can carry and send in another UL Grant, may indicate that it is for allowing which UL Grant simultaneously
Indicate and send data on corresponding sub-frame of uplink, it is also possible to without instruction, because end side needs at oneself
Know during data to be uploaded.
Mark is transmitted according to the permission from base station side in user side, when allowing transmission mark display to allow,
Determine and send upstream data in corresponding subframe；Allow transmission mark be shown as not allowing time, immediately in
The transmission of disconnected Seize ACK message, discharges channel.
Further, if the channel idle of main and auxiliary user, can be moved on mandate carrier wave by base station side
State signaling indicates: main and auxiliary user can be allowed all to transmit to use MU-MIMO mode, or, only allow
Master scheduling user is transmitted,
If the channel idle of primary user, the channel of auxiliary user makes fruitless efforts, and can authorized carrier wave by base station side
Upper dynamic signaling indicates: sent by primary user.
If the channel of primary user makes fruitless efforts, the channel idle of auxiliary user, carrier wave can authorized by base station side
Upper dynamic signaling indicates: sent by secondary user.
The technical scheme provided by the present invention is visible, before user side carries out transmitting uplink data, by right
Up minimum scheduling number of users and the consideration of LBT transmission success rate, select LBT transmission success rate high as far as possible
User be scheduled user, the most undoubtedly on the premise of guaranteeing fairness, it is right to be avoided as much as
The waste of ascending resource, meanwhile, also reduces LBT collision probability, decreases user and wait time delay, from
And improve channel capacity.
Below in conjunction with specific embodiment, the inventive method is described in detail.
Fig. 2 is the schematic flow sheet of the first embodiment of uplink resource allocating method of the present invention, and first implements
In example, it is assumed that performed up LBT by base station and operate, the LBT maximum busy channel time continuously is
4ms.As in figure 2 it is shown, include:
Step 200～step 201: assuming to use manual configuration mode, it is up that base station side pre-sets execution
Minimum scheduling number of users X=4 during scheduling；Base station retrains according to this number, up to all candidates
User is scheduling, and the number of users finally can dispatched in the unauthorized frequency range of such as 20MHz is M
Individual, and M is more than or equal to 4.
Step 201～step 203: because there being scheduled uplink user, base station to carry out up LBT
Intercept: if intercepted result is channel busy, then wait that next CCA time slot is initiated new LBT again and detectd
Listening, until base station is channel idle at the intercepted result of certain CCA time slot, then base station sends Seize ACK message
Carry out busy channel, and enter step 204.
Step 204: base station waits nearest descending sub frame while sending Seize ACK message, descending at this
Send UL Grant signaling in subframe scheduled user, in UL Grant signaling, carry resource
Distribution indicates and takies instruction continuously.
In first embodiment, owing to channel to take 4 subframes continuously, therefore base station is to M use
In the UL Grant that family sends, increase 2 bits newly takies instruction continuously, and wherein, 00 represents to channel even
Continuing and take 1 subframe, 01 expression takies 2 subframes continuously to channel, and channel is taken by 10 expressions continuously
3 subframes, 11 expressions take 4 subframes continuously to channel.
Step 205: after user receives the UL Grant that base station sends, refers to according to resource therein distribution
Show, and take instruction continuously, follow-up several sub-frame of uplink continuously send uplink business data.
Fig. 3 is the schematic flow sheet of the second embodiment of uplink resource allocating method of the present invention, and second implements
In example, it is assumed that performed up LBT by user and operate, the LBT maximum busy channel time continuously is 4ms.
As it is shown on figure 3, include:
Step 300～step 301: assuming to use manual configuration mode, base station side is in pre-setting in execution
During row scheduling minimum scheduling number of users X=4, the uplink scheduling of base station to enter under this number retrains
OK, the number of users M that i.e. base station is scheduled is not less than minimum scheduling number of users X, and is scheduling backup.
Also include before this step (not shown in Fig. 3): before base station carries out uplink scheduling, respectively use
In the object time to be added up of family, the present embodiment being assumed, the object time is the user self in nearest 100ms
LBT transmission success rate, and by Physical Uplink Shared Channel (PUSCH, Physical Uplink
Shared Channel) or Physical Uplink Control Channel (PUCCH, Physical Uplink Control
Channel) periodically to this LBT transmission success rate value of base station feedback.
And base station is before scheduling, read the LBT transmission success rate of feedback of all candidate user the last times,
The dispatching priority of user bigger for LBT transmission success rate is improved, and follows be pre-configured with minimum
Scheduling number of users, determines final scheduling result.
In this step, intercept owing to being LBT by user, it is thus possible to the user on base station scheduling occurs
Cannot compete channel because LBT intercepts failure, therefore scheduling backup, the most each frequency domain dispatching are done in base station
Unit all can dispatch two users, respectively master scheduling user, auxiliary scheduling user.
Step 302: scheduled user, according to scheduling result, is given on nearest descending sub frame in base station
Send UL Grant.Wherein,
Newly-increased in UL Grant have major-minor identification field, and this territory is 1 bit, is assumed to be 1 table in the present embodiment
Show this UL Grant correspondence master scheduling user, be 0 and represent the corresponding auxiliary scheduling user of this UL Grant.
Also increasing M-bit LBT cut-off symbol restriction of domain in UL Grant newly, it can be 1 that this territory takies bit number
ArriveIn arbitrary value.
Step 303～step 305: user receives after the UL Grant of base station, detects channel
Listen, listen to the master scheduling user of channel idle, directly transmit Seize ACK message and carry out busy channel, and enter
Step 306；Listening to the master scheduling user of channel busy, this CCA intercepts failure, returns and continues to detect
Listen；Listen to the auxiliary scheduling user of channel idle, also send Seize ACK message and carry out busy channel, and enter step
Rapid 306.
Step 306: base station is according to the Seize ACK message detected, it will be appreciated which user LBT intercepts competing
Striving channel, and which user of decision-making can do uplink, base station is authorizing on carrier wave all transmissions
The main and auxiliary user of busy channel sends the permission transmission mark of 1 bit, in the present embodiment, it is assumed that allow
Transmission is designated 1 expression and allows this user to send number according to UL Grant instruction on corresponding sub-frame of uplink
According to, it is that the UL Grant that this user of 0 expression receives cancels.
Step 307～step 310: user is according to the permission transmission mark received, and allowing, transmission mark is aobvious
When showing permission, determine in the corresponding subframe of UL Grant instruction, send upstream data；Allowing transmission mark
When knowledge is shown as not allowing, it is immediately terminated the transmission of Seize ACK message, discharges channel, i.e. this UL Grant
Cancel.
Fig. 4 is base station and the composition structural representation of user that the present invention realizes ascending resource distribution, such as figure
Shown in 4, for base station, at least include acquisition module, indicating module, transport module；Wherein,
Acquisition module, for obtaining for indicate how carry out the resource allocation information of ascending resource distribution；
Indicating module, for according to the resource allocation information obtained, sends uplink instruction to user side
Information.
Wherein, resource allocation information includes up minimum scheduling number of users and/or LBT transmission success rate；Obtain
Delivery block specifically for:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；
And/or,
All service users in adding up the object statistics time (such as nearest a period of time) pre-set respectively
LBT transmission success rate: preserve the LBT CCA of corresponding each user in the object statistics time and intercept letter
Road free time number of times and LBT CCA intercept channel number of times, and the LBT CCA calculating targeted customer intercepts
The LBT CCA of channel idle number of times and user intercepts the ratio of channel number of times, i.e. obtains targeted customer and exists
LBT transmission success rate in the object statistics time；Or,
The LBT CCA receiving the user side self come from user side by transmission of eating dishes without rice or wine intercepts channel sky
Not busy number of times and LBT CCA intercept number of times；Calculate LBT CCA and intercept channel idle number of times and user
LBT CCA intercept the ratio of channel number of times, obtain corresponding user LBT transmission within the object time
Success rate；Or,
Receive after the user side quantization within the object time certainly of all user sides in administrative area
LBT transmission success rate.
Further, base station of the present invention also includes that first intercepts module, is used for carrying out up LBT and intercepts,
If intercepted result is channel busy, then wait that next CCA time slot is initiated new LBT again and intercepted, directly
Certain CCA intercepted result to base station is channel idle, then send Seize ACK message and occupy channel, with logical
Know indicating module.Now,
Indicating module specifically for: follow the up minimum scheduling number of users in the resource allocation information of acquisition
User is carried out ascending resource distribution；Wait nearest descending sub frame, be scheduled by this descending sub frame
User send uplink instruction information, wherein, uplink instruction information can be UL Grant,
Uplink instruction information includes expression on several sub-frame of uplink continuously, sends uplink business data
Resource allocation information and continuous occupied information.Wherein, continuous occupied information is by the resource distribution letter obtained
Up minimum scheduling number of users in breath determines.
Or,
Further, indicating module specifically for:
According to the LBT transmission success rate in the resource allocation information obtained, set according to LBT transmission success rate
Put the dispatching priority of corresponding user, the priority that the user of the biggest correspondence of LBT transmission success rate is scheduled
The highest, and follow the up minimum scheduling number of users in the resource allocation information of acquisition, based on obtain
Each LBT transmission success rate carries out ascending resource distribution to corresponding user.Wherein, LBT is transmitted into
The user that performance number is higher, can improve dispatching priority, to determine final scheduling result；Receive
The Seize ACK message of user side busy channel, sends up to the user being scheduled by nearest descending sub frame
Transmission instruction information.Wherein, uplink instruction information can be UL Grant.In UL Grant newly
Increasing major-minor identification field, major-minor identification field can be 1 bit, such as: major-minor identification field is 1, and representing should
UL Grant correspondence master scheduling user；Major-minor identification field is 0, represents that the corresponding auxiliary scheduling of this UL Grant is used
Family, otherwise or.The LBT also increasing M-bit in UL Grant newly ends symbol restriction of domain, LBT
The cut-off bit number that takies of symbol restriction of domain can be 1 to arriveIn arbitrary value.Wherein, M
For the number of users being scheduled in unauthorized frequency range.
For user terminal, at least include receiver module, sending module, wherein,
Receiver module, indicates information for receiving the uplink from base station side；
Sending module, for sending uplink business data according to the uplink instruction information received.Tool
Body is used for: distributes instruction according to the resource in the uplink instruction information received, and takies continuously
Instruction, sends uplink business data on follow-up several sub-frame of uplink continuously.
Or,
User terminal includes receiver module, sending module, and second intercepts module；Wherein,
Receiver module, indicates information for receiving the uplink from base station side, notifies that second intercepts
Module；Mark is transmitted according to the permission from base station side, when allowing transmission mark display to allow, notice
Sending module；When allowing transmission mark to be shown as not allowing, it is immediately terminated the transmission of Seize ACK message, releases
Put channel；
Sending module, for receiving the notice from receiver module, sends line number in corresponding subframe
According to.Specifically distribute instruction according to the resource in uplink instruction information, and take instruction continuously,
Uplink business data is sent on follow-up several sub-frame of uplink continuously.
Second intercepts module, is used for carrying out up LBT and intercepts, if listening to the master scheduling of channel idle
User, directly transmits Seize ACK message and carrys out busy channel, to notify the indicating module of base station side；If intercepted
To the master scheduling user of channel busy, this CCA intercepts failure, then wait that next CCA time slot is sent out again
Play new LBT to intercept；If listening to the auxiliary scheduling user of channel idle, also sending Seize ACK message and accounting for
With channel, to notify the indicating module of base station side.
The above, the only preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done,
Should be included within the scope of the present invention.
Claims (20)
1. a uplink resource allocating method, it is characterised in that including: base station side obtains for instruction such as
What carries out the resource allocation information of ascending resource distribution；
Send uplink according to the resource allocation information obtained to user side and indicate information.
Uplink resource allocating method the most according to claim 1, it is characterised in that described resource is divided
Join information include up minimum scheduling number of users and/or first listen and say LBT transmission success rate afterwards.
Uplink resource allocating method the most according to claim 2, it is characterised in that described acquisition provides
Source distribution information includes:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；
And/or,
Channel idle is intercepted according to the LBT CCA of each user corresponding in the object statistics time in described base station
Number of times and LBT CCA intercept channel number of times, and the LBT CCA calculating targeted customer intercepts channel sky
The LBT CCA of not busy number of times and user intercepts the ratio of channel number of times, obtains targeted customer at object statistics
LBT transmission success rate in time；Or,
Described base station receives the LBT CCA from the user side self of user side by eating dishes without rice or wine and intercepts channel
Idle number of times and LBT CCA intercept number of times；Calculated LBT CCA intercepts channel idle time
The LBT CCA of number and user intercepts the ratio of channel number of times, obtains corresponding user within the object time
LBT transmission success rate；Or,
Described base station receives the LBT transmission success rate calculating from user side and quantifying by eating dishes without rice or wine.
Uplink resource allocating method the most according to claim 1, it is characterised in that before the method
Also include: the up minimum scheduling number of users that described base station is followed in the resource allocation information of acquisition is to user
Carry out ascending resource distribution；Described base station carries out up LBT and intercepts, if intercepted result is channel busy,
Then wait that next CCA time slot is initiated new LBT again and intercepted, until certain CCA of base station intercepts knot
Fruit is channel idle, then channel is occupied by sending Seize ACK message in base station；Meanwhile,
The described uplink instruction information that sends to user side according to the resource allocation information obtained includes:
Described base station waits nearest descending sub frame, is given in the user's transmission being scheduled by this descending sub frame
Row transmission instruction information, wherein, described uplink instruction information includes expression continuously several
Send the resource allocation information of uplink business data and continuous occupied information on sub-frame of uplink, take letter continuously
Breath is determined by the up minimum scheduling number of users in the resource allocation information obtained.
Uplink resource allocating method the most according to claim 1, it is characterised in that before the method
Also include: described base station is according to the LBT transmission success rate in the resource allocation information obtained, according to LBT
Transmission success rate arranges the dispatching priority of corresponding user, and follows in the resource allocation information of described acquisition
Up minimum scheduling number of users, corresponding user carried out based on each LBT transmission success rate obtained on
Row resource is distributed；
The described uplink instruction information that sends to user side according to the resource allocation information obtained includes:
Described base station receives the Seize ACK message of user side busy channel, according to scheduling result, by recently
Descending sub frame send uplink instruction information to the user that is scheduled；Wherein, in described uplink
Instruction information increases newly for representing that this uplink instruction information correspondence user is master scheduling user or good fortune tune
The major-minor identification field of degree user.
Uplink resource allocating method the most according to claim 5, it is characterised in that described up biography
Defeated instruction information comprises the continuous occupied information to unauthorized channel, the bit number of continuous occupied information
For log2(N) round up, wherein, LBT maximum is a length of many bits when taking continuously.
Uplink resource allocating method the most according to claim 5, it is characterised in that described up biography
Defeated instruction information does not comprise the continuous occupied information to unauthorized channel；
The method also includes: a newly-increased territory in each uplink instruction information, is used to refer on this
The sub-frame of uplink sequence number that row transmission instruction information is corresponding.
8. according to the uplink resource allocating method described in any one of claim 4～7, it is characterised in that institute
Stating uplink instruction information is uplink grant UL Grant.
9. according to the uplink resource allocating method described in claim 1 or 4, it is characterised in that described
Send after uplink instruction information to user side according to the resource allocation information obtained, described reception from
Before the upstream data according to uplink instruction information transmission of the user side, the method also includes:
The described uplink that user side receives from described base station side indicates information, according to resource therein
Distribution instruction, and take instruction continuously, follow-up several sub-frame of uplink continuously send uplink service
Data.
Uplink resource allocating method the most according to claims 1 to 5, it is characterised in that the method
Also include: described base station receives the upstream data sent from user side according to uplink instruction information.
11. uplink resource allocating methods according to claim 10, it is characterised in that described basis
The resource allocation information obtained is after user side sends uplink instruction information, and described reception is used by oneself
Before the upstream data according to uplink instruction information transmission of the side, family, the method also includes:
The uplink that user side receives from described base station side indicates information, carries out up LBT and intercepts,
If listening to the master scheduling user of channel idle, directly transmitting Seize ACK message and carrying out busy channel；If detectd
Hearing the master scheduling user of channel busy, this CCA intercepts failure, then wait next CCA time slot again
Initiate new LBT to intercept；If listening to the auxiliary scheduling user of channel idle, also send Seize ACK message
Busy channel；Now,
Described base station, according to the Seize ACK message detected, is authorizing on carrier wave all transmission busy channels
Main and auxiliary user sends permission transmission mark；
Mark is transmitted according to the permission from described base station side in user side, allows allowing transmission mark display
Time, determine and send upstream data in corresponding subframe；When allowing transmission mark to be shown as not allowing, vertical
I.e. interrupt the transmission of Seize ACK message, discharge channel.
12. uplink resource allocating methods according to claim 11, it is characterised in that if homophony
Degree user and the auxiliary scheduling success of CCA per family, the method also includes: described base station side is authorizing on carrier wave
Dynamic signaling indicates: use MU-MIMO mode to allow master scheduling user and auxiliary scheduling user all transmit, or
Person, only allows master scheduling user to transmit described upstream data；
If described master scheduling user CCA success, described auxiliary scheduling user CCA is unsuccessful, the method
Also include: described base station side is authorizing dynamic signaling instruction on carrier wave: by master scheduling, user sends on described
Row data；
If described master scheduling user CCA is unsuccessful, auxiliary scheduling user CCA success, the method is also wrapped
Include: described base station side is authorizing dynamic signaling instruction on carrier wave: by pair, scheduling user sends described upper line number
According to.
13. 1 kinds of base stations, it is characterised in that at least include acquisition module, indicating module, transport module；
Wherein,
Acquisition module, for obtaining for indicate how carry out the resource allocation information of ascending resource distribution；
Indicating module, for according to the resource allocation information obtained, sends uplink instruction to user side
Information.
14. base stations according to claim 13, it is characterised in that described resource allocation information includes
Up minimum scheduling number of users and/or LBT transmission success rate；Described acquisition module specifically for:
Static, semi-static or dynamic collocating uplink minimum scheduling number of users；
And/or,
All service users in adding up the object statistics time (such as nearest a period of time) pre-set respectively
LBT transmission success rate: preserve the LBT CCA of corresponding each user in the object statistics time and intercept letter
Road free time number of times and LBT CCA intercept channel number of times, and the LBT CCA calculating targeted customer intercepts
The LBT CCA of channel idle number of times and user intercepts the ratio of channel number of times, obtains targeted customer at mesh
LBT transmission success rate in mark timing statistics；Or,
The LBT CCA receiving the user side self come from user side by transmission of eating dishes without rice or wine intercepts channel sky
Not busy number of times and LBT CCA intercept number of times；Calculate LBT CCA and intercept channel idle number of times and user
LBT CCA intercept the ratio of channel number of times, obtain corresponding user LBT transmission within the object time
Success rate；Or,
Receive after the user side quantization within the object time certainly of all user sides in administrative area
LBT transmission success rate.
15. base stations according to claim 13, it is characterised in that described base station also includes that first detects
Listen module, be used for carrying out up LBT and intercept, if intercepted result is channel busy, then wait the next one
CCA time slot is initiated new LBT again and is intercepted, until certain CCA intercepted result of base station is channel idle,
Then send Seize ACK message and occupy channel, to notify indicating module；Correspondingly,
Described indicating module specifically for: follow in the resource allocation information of acquisition up minimum scheduling use
Amount carries out ascending resource distribution to user；Wait nearest descending sub frame, by this descending sub frame to quilt
The user of scheduling sends uplink instruction information, wherein, includes expression in uplink instruction information
Several sub-frame of uplink continuously send the resource allocation information of uplink business data and take letter continuously
Breath；Wherein, continuous occupied information is true by the up minimum scheduling number of users in the resource allocation information obtained
Fixed.
16. base stations according to claim 13, it is characterised in that described indicating module specifically for:
According to the LBT transmission success rate in the resource allocation information obtained, set according to LBT transmission success rate
Put the dispatching priority of corresponding user, the priority that the user of the biggest correspondence of LBT transmission success rate is scheduled
The highest, and follow the up minimum scheduling number of users in the resource allocation information of acquisition, based on obtain
Each LBT transmission success rate carries out ascending resource distribution, to determine final scheduling result to corresponding user；
Receive the Seize ACK message of user side busy channel, given the use being scheduled by nearest descending sub frame
Family sends described uplink instruction information；Wherein, increase newly in described uplink instruction information and be used for
Represent that this uplink instruction information correspondence user is master scheduling user or the major-minor mark of good fortune scheduling user
Territory.
17. according to the uplink resource allocating method described in any one of claim 13～16, it is characterised in that
Described uplink instruction information is uplink grant UL Grant.
18. 1 kinds of user terminals, it is characterised in that at least include receiver module, sending module；
Wherein, receiver module, indicate information for receiving the uplink from base station side；
Sending module, for sending uplink business data according to the uplink instruction information received.
19. user terminals according to claim 18, it is characterised in that described sending module is concrete
For: distribute instruction according to the resource in described uplink instruction information, and take instruction continuously,
Follow-up several sub-frame of uplink continuously send uplink business data.
20. 1 kinds of user terminals, it is characterised in that at least include receiver module, sending module, and
Two intercept module；Wherein,
Receiver module, indicates information for receiving the uplink from base station side, notifies that second intercepts
Module；Mark is transmitted according to the permission from base station side, when allowing transmission mark display to allow, notice
Sending module；When allowing transmission mark to be shown as not allowing, it is immediately terminated the transmission of Seize ACK message, releases
Put channel；
Sending module, for receiving the notice from receiver module, sends line number in corresponding subframe
According to；
Second intercepts module, is used for carrying out up LBT and intercepts, if listening to the master scheduling of channel idle
User, directly transmits Seize ACK message and carrys out busy channel, to notify the indicating module of base station side；If intercepted
To the master scheduling user of channel busy, this CCA intercepts failure, then wait that next CCA time slot is sent out again
Play new LBT to intercept；If listening to the auxiliary scheduling user of channel idle, also sending Seize ACK message and accounting for
With channel, to notify the indicating module of base station side.
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| CN201510251325.1A CN106304345A (en) | 2015-05-15 | 2015-05-15 | A kind of uplink resource allocating method, base station and user terminal |
| PCT/CN2016/081009 WO2016184307A1 (en) | 2015-05-15 | 2016-05-04 | Uplink resource allocation method, base station and user terminal |
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| CN109982432A (en) * | 2018-12-10 | 2019-07-05 | 中国科学院上海微系统与信息技术研究所 | A kind of listem-before-talk method for parameter configuration of the equipment based on load |
| WO2020169029A1 (en) * | 2019-02-22 | 2020-08-27 | 维沃移动通信有限公司 | Scheduling method, reporting method, and terminal |
| CN111867080B (en) * | 2019-04-30 | 2023-03-24 | 中国信息通信研究院 | Downlink channel indication method and device |
| CN111867080A (en) * | 2019-04-30 | 2020-10-30 | 中国信息通信研究院 | Downlink channel indication method and device |
| WO2021072961A1 (en) * | 2019-10-18 | 2021-04-22 | Oppo广东移动通信有限公司 | Priority configuration method and apparatus, and terminal device |
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| WO2016184307A1 (en) | 2016-11-24 |
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