CN103702431B - The method and apparatus of uplink scheduling - Google Patents
The method and apparatus of uplink scheduling Download PDFInfo
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Abstract
Embodiments of the invention propose a kind of method of uplink scheduling, comprise the following steps：For user configuring SRS frequency ranges, and the SRS signal that periodic receipt user sends；The available signal power of user is calculated according to SRS signal, the interference noise power of corresponding band is calculated respectively in each sub-frame of uplink, the Signal to Interference plus Noise Ratio of corresponding band is calculated；It is user's distribution uplink transmission resource according to the Signal to Interference plus Noise Ratio of corresponding band.On the other hand embodiments of the invention also proposed a kind of equipment of uplink scheduling.Such scheme proposed by the present invention, it can be prevented effectively from and the problem of Signal to Interference plus Noise Ratio is inaccurate is measured by SRS in the prior art, so as to effectively realize the accurate Signal to Interference plus Noise Ratio for calculating user's PUSCH channels, and according to obtained frequency range Signal to Interference plus Noise Ratio can accurately, strictly according to the facts the up PUSCH channel situations of reflection, optimal frequency resource can be accurately selected for user, effectively improve systematic function.
Description
Technical field
The present invention relates to moving communicating field, specifically, the present invention relates to the method and apparatus of uplink scheduling.
Background technology
LTE（Long Term Evolution, Long Term Evolution) it is by the long-term of the 3GPP UMTS technical standards organized to set up
Evolution.Because LTE system introduces the critical transmissions technology such as OFDM and multiple antennas MIMO, spectrum efficiency and data are significantly increased
Transmission rate, and support that various bandwidth is distributed, more flexibly, power system capacity and covering are obviously improved for frequency spectrum distribution.LTE wireless networks
The more flattening of network framework, reduces Time Delay of Systems, reduces networking cost and maintenance cost.LTE is wide-band communication system, wide
Take a message with frequency selectivity, the decline of the signal experience of different frequency is different.The frequency selectivity of channel and the phase of channel
Dry bandwidth is relevant, embodies frequency selectivity if signal frequency range is more than coherence bandwidth, i.e., the decline of each frequency band is inconsistent.It is outdoor
Coherence bandwidth be signal fadeout in 50KHz~1MHz, i.e. 1M bandwidth be flat, indoor coherence bandwidth be 5MHz~
25MHz.The 20MHz bandwidth situations commonly used for TD-LTE, signal bandwidth is significantly greater than outdoor channel coherence bandwidth, therefore outdoor
LTE environment frequency selective fading is obvious, namely different PRB can show different rapid fading characteristics.Other LTE
The interference that each frequency band is subject in whole bandwidth also not necessarily, especially when external disturbance is that arrowband is disturbed.Therefore LTE systems
There is certain difference in the Signal to Interference plus Noise Ratio of up each subband of uniting, LTE base station side scheduler can according to each sub-band channel situations of UE come
Frequency selective scheduling is carried out, in whole system bandwidth, the best PRB resources of channel condition are selected as far as possible for user, so that
Obtain multi-subscriber dispatching gain and frequency diversity gain.
Line frequency selection scheduling scheme is described in detail below on current base station：
Base station is each user configuring cycle SRS resource, it is ensured that user's cycle sends SRS signal and used for base station measurement；
Whole SRS bandwidth is divided into many by base station period measurement user uplink SRS signal, base station according to certain granularity
Individual subband, each subband calculates and obtains a Signal to Interference plus Noise Ratio.
When base station dispatcher is that user distributes up PRB resources, according to the Signal to Interference plus Noise Ratio situation of each subband of user, it is being
In available resources of uniting, selection can carry amount of user data and the best sequential frequency band resource of Signal to Interference plus Noise Ratio.
In such scheme, the performance of upper line frequency selection scheduling scheme is dependent on the accurate of user's subband Signal to Interference plus Noise Ratio measurement
Property, go up line frequency selection scheduling effect if subband Signal to Interference plus Noise Ratio measures the up PUSCH channel situations of reflection that can accurately, strictly according to the facts
All right, otherwise the gain of frequency selection scheduling is not just obvious.Existing upper line frequency selection scheduling scheme reflects PUSCH channels using SRS measurements
Situation, because the resource and PUSCH resources that can be used to send SRS signal in LTE system are nonoverlapping in time domain, this is just
Cause to represent that PUSCH subband situations there is certain deviation using SRS measurements amount.Concrete analysis is as follows：
（1）Symbol where SRS can be disturbed by other community user SRS signals, and the interference being subject on PUSCH comes from
Other cell PUSCH signals, SRS resource occupancy situation depends on high-rise static configuration, and PUSCH depends on dynamic dispatching, institute
With the user SRS interference being subject to and the user PUSCH disturbed condition being subject to and different.
（2）The SRS of one user can only be sent in some symbol of some subframe, and the PUSCH of user may be scheduled
In any one sub-frame of uplink, if there is the external disturbance of time-varying, external disturbance is strong in different subframes or symbol in other words
Degree is different, then the disturbed condition that the PUSCH of user SRS and user are subject to will be different.
In summary, the Signal to Interference plus Noise Ratio obtained with SRS symbolized measurements can not accurately represent that the letter of user's PUSCH channels is done
Make an uproar and compare, when the simple Signal to Interference plus Noise Ratio obtained using SRS measurements enters line frequency selection scheduling, be unfavorable for choosing optimal son for user
Band.
Therefore, it is necessary to propose that a kind of effective technical scheme solves the above problems.
The content of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency, especially calculates having for user according to SRS signal
With signal power, the interference noise power of corresponding band is calculated respectively in each sub-frame of uplink, and the letter of calculating corresponding band is dry to make an uproar
Than.
In order to achieve the above object, on the one hand embodiments of the invention propose a kind of method of uplink scheduling, including with
Lower step：
For user configuring SRS frequency ranges, and the SRS signal that user described in periodic receipt sends；
The available signal power of user is calculated according to the SRS signal, corresponding band is calculated respectively in each sub-frame of uplink
Interference noise power, calculate frequency range Signal to Interference plus Noise Ratio；
It is user's distribution uplink transmission resource according to the Signal to Interference plus Noise Ratio of the corresponding band.
On the other hand embodiments of the invention also proposed a kind of equipment of uplink scheduling, including configuration module, calculating mould
Block and distribute module,
The configuration module, for for user configuring SRS frequency ranges, and the SRS signal that user described in periodic receipt sends；
The computing module, the available signal power for calculating user according to the SRS signal, in each sub-frame of uplink
The interference noise power of corresponding band is calculated respectively, calculates the Signal to Interference plus Noise Ratio of corresponding band；
The distribute module, is user's distribution uplink money for the Signal to Interference plus Noise Ratio according to the corresponding band
Source.
Such scheme proposed by the present invention, it is up at each by calculating the available signal power of user according to SRS signal
Subframe calculates the interference noise power of corresponding band respectively, calculates the Signal to Interference plus Noise Ratio of corresponding band, i.e., directly in each up PUSCH
Subframe measures the interference noise situation of each subband, can be prevented effectively from the problem of channel measurement is inaccurate in the prior art.Based on this
The such scheme that invention is proposed is scheduled, and can accurately be selected optimal frequency resource for user, be effectively improved systematic function.
Such scheme proposed by the present invention, to the change very little of existing system, does not interfere with the compatibility of system, and realize it is simple,
Efficiently.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the method flow diagram of embodiment of the present invention uplink scheduling；
Fig. 2 is the structural representation of the equipment of embodiment of the present invention uplink scheduling.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Line frequency selection scheduling method is described in detail below on current base station：Base station is each user configuring cycle SRS resource, is protected
Card user's cycle sends SRS signal and used for base station measurement；Base station period measurement user uplink SRS signal, base station is by whole SRS
Bandwidth is divided into multiple subbands according to certain granularity, and each subband calculates and obtains a Signal to Interference plus Noise Ratio；Base station dispatcher is
When user distributes up PRB resources, according to the Signal to Interference plus Noise Ratio situation of each subband of user, in system available resources, selection can
Carry amount of user data and the best sequential frequency band resource of Signal to Interference plus Noise Ratio.
In such scheme, the performance of upper line frequency selection scheduling scheme is dependent on the accurate of user's subband Signal to Interference plus Noise Ratio measurement
Property, go up line frequency selection scheduling effect if subband Signal to Interference plus Noise Ratio measures the up PUSCH channel situations of reflection that can accurately, strictly according to the facts
All right, otherwise the gain of frequency selection scheduling is not just obvious.Existing upper line frequency selection scheduling scheme reflects PUSCH channels using SRS measurements
Situation, because the resource and PUSCH resources that can be used to send SRS signal in LTE system are nonoverlapping in time domain, this is just
Cause to represent that PUSCH subband situations have certain deviation using SRS measurements.
The present invention is proposed, the available signal power of user is calculated according to SRS signal, phase is calculated respectively in each sub-frame of uplink
The interference noise power of frequency range is answered, the Signal to Interference plus Noise Ratio of corresponding band is calculated, i.e., directly measures each subband in each up PUSCH subframes
Interference noise situation, according to the Signal to Interference plus Noise Ratio of frequency range, be user distribution uplink transmission resource.
In order to realize the purpose of the present invention, the embodiment of the present invention proposes a kind of method of uplink scheduling, including following step
Suddenly：
For user configuring SRS frequency ranges, and the SRS signal that periodic receipt user sends；
The available signal power of user is calculated according to SRS signal, the dry of corresponding band is calculated respectively in each sub-frame of uplink
Noise power is disturbed, the Signal to Interference plus Noise Ratio of corresponding band is calculated；
It is user's distribution uplink transmission resource according to the Signal to Interference plus Noise Ratio of corresponding band.
Such scheme proposed by the present invention, the available signal power of user is calculated according to SRS signal, in each sub-frame of uplink
The interference noise power of corresponding band is calculated respectively, the Signal to Interference plus Noise Ratio of corresponding band is calculated, i.e., directly in each up PUSCH subframes
The interference noise situation of each subband is measured, the problem of channel measurement is inaccurate in the prior art can be prevented effectively from.Based on the present invention
The such scheme of proposition is scheduled, and can accurately be selected optimal frequency resource for user, be effectively improved systematic function.
As shown in figure 1, be the method flow diagram of embodiment of the present invention uplink scheduling, including step S110 to S130.Below
In conjunction with specific embodiments, details therein is illustrated.
S110：For user configuring SRS frequency ranges, and the SRS signal that periodic receipt user sends.
In step s 110, similar with prior art, base station is each user configuring cycle SRS resource, it is ensured that Yong Huzhou
Phase sends SRS signal and used for base station measurement.
For user configuring SRS frequency ranges, it usually needs whole SRS band bandwidths are divided into multiple subbands and distribute to user.
As embodiments of the invention, it is divided into by whole SRS band bandwidths and by whole up PUSCH band bandwidths identical or different
Multiple subbands.
S120：The available signal power of user is calculated according to SRS signal, corresponding band is calculated respectively in each sub-frame of uplink
Interference noise power, calculate corresponding band Signal to Interference plus Noise Ratio.
Specifically, frequency range i Signal to Interference plus Noise Ratio, including two kinds of situations are calculated：
Sub-frame of uplink m frequency ranges i does not dispatch situation during PUSCH/PUCCH, or sub-frame of uplink m frequency ranges i scheduled
Situation during PUSCH/PUCCH.
Correspondingly, PUSCH/PUCCH is not dispatched if up subframe m frequency ranges i, calculates frequency range i Signal to Interference plus Noise Ratio, bag
Include：
In sub-frame of uplink m, user's k frequency ranges i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/Pa(m,i)；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal, Pa(m, i) is frequency range i
Reception general power.
PUSCH/PUCCH is scheduled if up subframe m frequency ranges i, frequency range i Signal to Interference plus Noise Ratio is calculated, including：
PUSCH/PUCCH is scheduled if up subframe m frequency ranges i, frequency range i reception general power is Pa(m, i), PUSCH
Or PUCCH receiving power is Ps(m, i), then in sub-frame of uplink m, user's k frequency ranges i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/(Pa(m,i)-Ps(m,i))；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal.
Pass through such scheme so that access network equipment can more accurately obtain the channel situation of up-link, in order to it
It is user's dividing frequency resource afterwards.
S130：It is user's distribution uplink transmission resource according to the Signal to Interference plus Noise Ratio of frequency range.
Specifically, be user distribute sub-frame of uplink PRB resources when, in system available resources, selection can carry use
The user data amount and best Continuous Band of Signal to Interference plus Noise Ratio distributes to user.
The above method proposed by the present invention, it is up at each by calculating the available signal power of user according to SRS signal
Subframe calculates the interference noise power of corresponding band respectively, calculates the Signal to Interference plus Noise Ratio of corresponding band, i.e., directly in each up PUSCH
Subframe measures the interference noise situation of each subband.The above method, can effectively overcome in the prior art, due in LTE system, using
It is nonoverlapping in time domain to send the resource of SRS signal with PUSCH resources, SRS and PUSCH time-domain positions are different, institute
It is disturbed also just different, causes between Signal to Interference plus Noise Ratio that SRS symbolized measurements are obtained and the Signal to Interference plus Noise Ratio of user's PUSCH channels
The deviation of interference calculation, thus the Signal to Interference plus Noise Ratio obtained by SRS symbolized measurements can not accurately represent user's PUSCH channels
The problem of Signal to Interference plus Noise Ratio.The above method proposed by the present invention, can realize accurately estimate each up each son of PUSCH subframes of user
The Signal to Interference plus Noise Ratio of band, during upper line frequency selection scheduling, can accurately be selected according to user in the Signal to Interference plus Noise Ratio of each subband of the subframe for user
Select optimal subband.It is scheduled based on the above method proposed by the present invention, can accurately selects optimal frequency resource for user,
Effectively improve systematic function.
As shown in Fig. 2 the embodiment of the invention also discloses a kind of equipment 100 of uplink scheduling, it is characterised in that including with
Put module 110, computing module 120 and distribute module 130.
Wherein, configuration module 110, for for user configuring SRS frequency ranges, and the SRS signal that periodic receipt user sends.
Computing module 120, the available signal power for calculating user according to SRS signal, in each sub-frame of uplink difference
The interference noise power of corresponding band is calculated, the Signal to Interference plus Noise Ratio of corresponding band is calculated.
Specifically, computing module 120 includes：Based on when not dispatching PUSCH/PUCCH by sub-frame of uplink m frequency ranges i
Calculate, or calculating of sub-frame of uplink m frequency ranges i when scheduled PUSCH/PUCCH；
Accordingly, when not dispatching PUSCH/PUCCH if up subframe m frequency ranges i, computing module 120 is used to calculate frequency
Section i Signal to Interference plus Noise Ratio, in sub-frame of uplink m, user's k frequency ranges i Signal to Interference plus Noise Ratio is
SINRk,m(i)=Sk(i)/Pa(m,i)；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal, Pa(m, i) is frequency range i
Reception general power.
When scheduled PUSCH/PUCCH if up subframe m frequency ranges i, computing module 120 is used to work as sub-frame of uplink m frequency ranges i
When scheduled PUSCH/PUCCH, frequency range i reception general power is Pa(m, i), PUSCH or PUCCH receiving power are Ps(m,
I), then in sub-frame of uplink m, the Signal to Interference plus Noise Ratio that computing module 120 calculates user's k frequency ranges i is
SINRk,m(i)=Sk(i)/(Pa(m,i)-Ps(m,i))；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal.
In addition, configuration module 110 is additionally operable to whole SRS band bandwidths and is divided into whole up PUSCH band bandwidths
Multiple subbands, wherein, frequency range i is one of subband, can so accomplish to cause to calculate the useful of user according to SRS signal
Signal power, the interference noise power of corresponding band is calculated in each sub-frame of uplink respectively, is made an uproar the letter that calculates corresponding band i is dry
Than.
Distribute module 130, is user's distribution uplink transmission resource for the Signal to Interference plus Noise Ratio according to corresponding band.
Specifically, when distribute module 130 is used to distribute the PRB resources of sub-frame of uplink for user, in system available resources
Interior, selection can carry amount of user data and the best Continuous Band of Signal to Interference plus Noise Ratio distributes to user.
In actual applications, the said equipment occurs generally in the form of the access network equipments such as base station.
The said equipment proposed by the present invention, it is up at each by calculating the available signal power of user according to SRS signal
Subframe calculates the interference noise power of corresponding band respectively, calculates the Signal to Interference plus Noise Ratio of corresponding band, i.e., directly in each up PUSCH
Subframe measures the interference noise situation of each subband.The said equipment proposed by the present invention, can effectively overcome in the prior art, due to
It is nonoverlapping, SRS and PUSCH time domains position in time domain for sending the resource of SRS signal with PUSCH resources in LTE system
Put different, be disturbed also just different, cause the letter of Signal to Interference plus Noise Ratio and user's PUSCH channels that SRS symbolized measurements obtain
The deviation of the dry interference calculation made an uproar than between, thus the Signal to Interference plus Noise Ratio obtained by SRS symbolized measurements can not accurately represent use
The problem of Signal to Interference plus Noise Ratio of family PUSCH channels.The said equipment proposed by the present invention, can realize that accurate to estimate user each up
The Signal to Interference plus Noise Ratio of each subband of PUSCH subframes, during upper line frequency selection scheduling, can according to user each subband of the subframe Signal to Interference plus Noise Ratio
Optimal subband is accurately selected for user.It is scheduled, can be accurately selected for user based on the said equipment proposed by the present invention
Optimal frequency resource, effectively improves systematic function.
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
Rapid to can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is realized using in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
The above is only some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of method of uplink scheduling, it is characterised in that comprise the following steps：
For user configuring SRS frequency ranges, and the SRS signal that user described in periodic receipt sends；
The available signal power of user is calculated according to the SRS signal, the dry of corresponding band is calculated respectively in each sub-frame of uplink
Noise power is disturbed, the Signal to Interference plus Noise Ratio of corresponding band is calculated；
Wherein, frequency range i Signal to Interference plus Noise Ratio is calculated, including：
PUSCH/PUCCH is not dispatched if up subframe m frequency ranges i, in sub-frame of uplink m, user's k frequency ranges i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/Pa(m,i)；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal, Pa(m, i) is frequency range i
Reception general power；
Frequency range i Signal to Interference plus Noise Ratio is calculated, is also included：
PUSCH/PUCCH is scheduled if up subframe m frequency ranges i, frequency range i reception general power is Pa(m, i), the PUSCH or
PUCCH receiving power is Ps(m, i), then in sub-frame of uplink m, user's k frequency ranges i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/(Pa(m,i)-Ps(m,i))；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal；
It is user's distribution uplink transmission resource according to the Signal to Interference plus Noise Ratio of the corresponding band.
2. the method for uplink scheduling according to claim 1, it is characterised in that also include：
Multiple subbands are divided into by whole SRS band bandwidths and by whole up PUSCH band bandwidths.
3. the method for the uplink scheduling according to claim 1 to 2 is one of any, it is characterised in that for user distribution
Uplink transmission resource, including：
When distributing the PRB resources of sub-frame of uplink for user, in system available resources, selection can carry amount of user data and letter is dry
Make an uproar and distribute to the user than best Continuous Band.
4. a kind of equipment of uplink scheduling, it is characterised in that including configuration module, computing module and distribute module,
The configuration module, for for user configuring SRS frequency ranges, and the SRS signal that user described in periodic receipt sends；
The computing module, the available signal power for calculating user according to the SRS signal, in each sub-frame of uplink difference
The interference noise power of corresponding band is calculated, the Signal to Interference plus Noise Ratio of corresponding band is calculated；
The computing module is used for the Signal to Interference plus Noise Ratio for calculating frequency range i, including：
PUSCH/PUCCH is not dispatched if up subframe m frequency ranges i, in sub-frame of uplink m, the computing module calculates user k
Frequency range i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/Pa(m,i)；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal, Pa(m, i) is frequency range i
Reception general power；
The computing module is additionally operable to calculate frequency range i Signal to Interference plus Noise Ratio, including：
PUSCH/PUCCH is scheduled if up subframe m frequency ranges i, frequency range i reception general power is Pa(m, i), the PUSCH or
PUCCH receiving power is Ps(m, i), then in sub-frame of uplink m, the computing module calculates user's k frequency ranges i Signal to Interference plus Noise Ratio
SINRk,m(i)=Sk(i)/(Pa(m,i)-Ps(m,i))；
Wherein, frequency range i is one of subband, Sk(i) it is the user k received SRS signal；
The distribute module, is user's distribution uplink transmission resource for the Signal to Interference plus Noise Ratio according to the corresponding band.
5. the equipment of uplink scheduling as claimed in claim 4, it is characterised in that the equipment configuration module of the uplink scheduling is also
For being divided into multiple subbands by whole SRS band bandwidths and by whole up PUSCH band bandwidths.
6. the equipment of the uplink scheduling as described in claim 4 to 5 is one of any, it is characterised in that the distribute module is used for
When distributing the PRB resources of sub-frame of uplink for user, in system available resources, selection can carry amount of user data and Signal to Interference plus Noise Ratio
Best Continuous Band distributes to the user.
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| CN104023407B (en) | 2014-05-23 | 2017-09-29 | 大唐移动通信设备有限公司 | Upper line frequency selection scheduling method and device |
| CN105828373B (en) * | 2015-01-06 | 2018-05-15 | 中国移动通信集团设计院有限公司 | A kind of method and device for the Signal to Interference plus Noise Ratio SINR for calculating down channel |
| CN106793094B (en) * | 2015-11-20 | 2020-05-01 | 普天信息技术有限公司 | Uplink resource allocation method, device and base station |
| CN111107652A (en) * | 2018-10-26 | 2020-05-05 | 普天信息技术有限公司 | Resource allocation method and device based on RIP in LTE system |
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| CN102130819A (en) * | 2010-01-13 | 2011-07-20 | 中国移动通信集团公司 | Method and device for scheduling flow service |
| CN102281642A (en) * | 2010-06-10 | 2011-12-14 | 中兴通讯股份有限公司 | Method and device for allocating SRS resource in LTE system |
| EP2663123A1 (en) * | 2011-01-07 | 2013-11-13 | NTT DoCoMo, Inc. | Wireless base station, user terminal, and wireless communication method |
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| CN102098785A (en) * | 2009-12-14 | 2011-06-15 | 中兴通讯股份有限公司 | Wireless communication resource allocation method and device |
| CN102130819A (en) * | 2010-01-13 | 2011-07-20 | 中国移动通信集团公司 | Method and device for scheduling flow service |
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