CN103702431A - Uplink dispatching method and equipment - Google Patents
Uplink dispatching method and equipment Download PDFInfo
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- CN103702431A CN103702431A CN201310750177.9A CN201310750177A CN103702431A CN 103702431 A CN103702431 A CN 103702431A CN 201310750177 A CN201310750177 A CN 201310750177A CN 103702431 A CN103702431 A CN 103702431A
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Abstract
The embodiment of the invention provides an uplink dispatching method, which comprises the following steps of configuring an SRS frequency band for a user, and periodically receiving an SRS signal sent by the user; calculating the available signal power of the user according to the SRS signal, respectively the interference noise power of the corresponding frequency band in each uplink subframe and calculating the signal to interference plus noise power ratio of the corresponding frequency band; distributing uplink transmission resources for the user according to the signal to interference plus noise power ratio of the corresponding frequency band. The embodiment of the invention also provides uplink dispatching equipment. By the adoption of the above scheme provided by the invention, the problem that the signal to interference plus noise power ratio measured through SRS is inaccurate in the prior art is effectively solved, so that exact calculation for the signal to interference plus noise power ratio of a PUSCH (physical uplink shared channel) of the user is effectively realized, the condition of the PUSCH can be accurately and faithfully reflected according to the obtained signal to interference plus noise power ratio of the frequency band, and therefore optimum frequency resources are accurately selected for the user, and the system performance is effectively improved.
Description
Technical field
The present invention relates to moving communicating field, particularly, the present invention relates to the method and apparatus of uplink scheduling.
Background technology
LTE(Long Term Evolution, Long Term Evolution) be the Long Term Evolution of the UMTS technical standard organized to set up by 3GPP.Due to LTE system, introduced the critical transmissions technology such as OFDM and many antennas MIMO, significantly increased spectrum efficiency and message transmission rate, and supported various bandwidth to distribute, spectrum allocation may is more flexible, and power system capacity and covering significantly promote.The flattening more of LTE wireless network architecture, has reduced Time Delay of Systems, has reduced networking cost and maintenance cost.LTE is wide-band communication system, and broad-band channel has frequency selectivity, and the decline of the signal experience of different frequency is different.The frequency selectivity of channel is relevant with the coherence bandwidth of channel, if signal frequency range is greater than coherence bandwidth, embodies frequency selectivity, and the decline of each frequency band is inconsistent.Outdoor coherence bandwidth is 50KHz～1MHz, and the signal fadeout in 1M bandwidth is smooth, and indoor coherence bandwidth is 5MHz～25MHz.For the conventional 20MHz bandwidth situation of TD-LTE, signal bandwidth is obviously greater than outdoor channel coherence bandwidth, and therefore outdoor LTE environment frequency selective fading is obvious, is also that different PRB can present different rapid fading characteristics.The interference that in the whole bandwidth of LTE, each frequency band is subject to is in addition also not necessarily the same, especially when external disturbance is arrowband interference.Therefore there is certain difference in the Signal to Interference plus Noise Ratio of each subband of LTE system uplink, LTE base station side scheduler can carry out frequency selective scheduling according to each sub-band channel situation of UE, in whole system bandwidth, be the best PRB resource of user's selective channel condition as far as possible, thereby obtain multi-subscriber dispatching gain and frequency diversity gain.
On base station, line frequency selection scheduling scheme specifically describes as follows at present:
Base station is each user configuration cycle SRS resource, guarantees that user's cycle sends SRS signal for base station measurement;
Base station period measurement user uplink SRS signal, base station is divided into a plurality of subbands by whole SRS bandwidth according to certain granularity, and each subband calculates a Signal to Interference plus Noise Ratio.
When base station dispatcher is the up PRB resource of user assignment, according to the Signal to Interference plus Noise Ratio situation of each subband of user, in system available resources, selection can carrying user data amount 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 depends on the accuracy that user's subband Signal to Interference plus Noise Ratio is measured, if subband Signal to Interference plus Noise Ratio is measured the up PUSCH channel situation of reflection that can be accurately, strictly according to the facts, upper line frequency selection scheduling effect is all right, otherwise selection scheduling gains just not obvious frequently.Existing upper line frequency selection scheduling scheme reflects PUSCH channel situation with SRS measurement, owing to can being used for sending resource and the PUSCH resource of SRS signal in LTE system, be nonoverlapping in time domain, this just causes representing that by SRS measuring amount PUSCH subband situation just exists certain deviation.Make a concrete analysis of as follows:
(1) SRS place symbol can be subject to the interference of other community user SRS signal, and the interference being subject on PUSCH is from other community PUSCH signal, SRS occupation condition depends on high-rise static configuration, and PUSCH depends on dynamic dispatching, so the disturbed condition that the interference that user SRS is subject to and this user PUSCH are subject to different.
(2) users' SRS can only send at certain symbol of certain subframe, and user's PUSCH may be scheduled in any one sub-frame of uplink, if the external disturbance becoming while existing, external disturbance is different in different subframes or symbol intensity in other words, and the disturbed condition that user SRS and user's PUSCH is subject to will be different.
In sum, the Signal to Interference plus Noise Ratio measuring with SRS symbol can not accurately represent the Signal to Interference plus Noise Ratio of user PUSCH channel, while using merely Signal to Interference plus Noise Ratio that SRS measures to carry out frequency selection scheduling, is unfavorable for choosing optimum subband for user.
Therefore, being necessary to propose a kind of effective technical scheme addresses the above problem.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency, especially according to SRS calculated signals user's available signal power, calculates respectively the interference noise power of corresponding band at each sub-frame of uplink, calculates the Signal to Interference plus Noise Ratio of corresponding band.
In order to achieve the above object, embodiments of the invention have proposed a kind of method of uplink scheduling on the one hand, comprise the following steps:
For user configures SRS frequency range, and periodically receive the SRS signal that described user sends;
According to described SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of frequency range;
According to the Signal to Interference plus Noise Ratio of described corresponding band, it is described user assignment uplink transmission resource.
Embodiments of the invention have also proposed a kind of equipment of uplink scheduling on the other hand, comprise configuration module, computing module and distribution module,
Described configuration module, is used to user to configure SRS frequency range, and periodically receives the SRS signal that described user sends;
Described computing module, for according to described SRS calculated signals user's available signal power, calculates respectively the interference noise power of corresponding band at each sub-frame of uplink, calculate the Signal to Interference plus Noise Ratio of corresponding band;
Described distribution module, for according to the Signal to Interference plus Noise Ratio of described corresponding band, is described user assignment uplink transmission resource.
The such scheme that the present invention proposes, by according to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band, directly in each up PUSCH subframe, measure the interference noise situation of each subband, can effectively avoid the inaccurate problem of channel measurement in prior art.The such scheme proposing based on the present invention is dispatched, and can accurately select optimal frequency resource for user, effectively improves systematic function.The such scheme that the present invention proposes, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
The aspect that the present invention is additional and advantage in the following description part provide, and these will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, 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
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
At present on base station line frequency selection scheduling method specific as follows described in: base station be each user configuration cycle SRS resource, and assurance user's cycle sends SRS signal for base station measurement; Base station period measurement user uplink SRS signal, base station is divided into a plurality of subbands by whole SRS bandwidth according to certain granularity, and each subband calculates a Signal to Interference plus Noise Ratio; When base station dispatcher is the up PRB resource of user assignment, according to the Signal to Interference plus Noise Ratio situation of each subband of user, in system available resources, selection can carrying user data amount 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 depends on the accuracy that user's subband Signal to Interference plus Noise Ratio is measured, if subband Signal to Interference plus Noise Ratio is measured the up PUSCH channel situation of reflection that can be accurately, strictly according to the facts, upper line frequency selection scheduling effect is all right, otherwise selection scheduling gains just not obvious frequently.Existing upper line frequency selection scheduling scheme reflects PUSCH channel situation with SRS measurement, owing to can being used for sending resource and the PUSCH resource of SRS signal in LTE system, be nonoverlapping in time domain, this just causes representing that with SRS measurement PUSCH subband situation exists certain deviation.
The present invention proposes, according to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band, directly in each up PUSCH subframe, measure the interference noise situation of each subband, according to the Signal to Interference plus Noise Ratio of frequency range, it is user assignment uplink transmission resource.
In order to realize the present invention's object, the embodiment of the present invention has proposed a kind of method of uplink scheduling, comprises the following steps:
For user configures SRS frequency range, and periodically receive the SRS signal that user sends;
According to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band;
According to the Signal to Interference plus Noise Ratio of corresponding band, it is user assignment uplink transmission resource.
The such scheme that the present invention proposes, according to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band, directly in each up PUSCH subframe, measure the interference noise situation of each subband, can effectively avoid the inaccurate problem of channel measurement in prior art.The such scheme proposing based on the present invention is dispatched, and can accurately select optimal frequency resource for user, effectively improves systematic function.
As shown in Figure 1, be the method flow diagram of embodiment of the present invention uplink scheduling, comprise step S110 to S130.Below in conjunction with specific embodiment, details is wherein described.
S110: for user configures SRS frequency range, and periodically receive the SRS signal that user sends.
In step S110, and prior art is similar, and base station is each user configuration cycle SRS resource, guarantees that user's cycle sends SRS signal for base station measurement.
For user configures SRS frequency range, conventionally whole SRS band bandwidth need to be divided into a plurality of allocation of subbands to user.As embodiments of the invention, by whole SRS band bandwidth with by whole up PUSCH band bandwidth, be divided into identical or different a plurality of subbands.
S120: according to SRS calculated signals user's available signal power, calculate respectively the interference noise power of corresponding band at each sub-frame of uplink, calculate the Signal to Interference plus Noise Ratio of corresponding band.
Particularly, calculate the Signal to Interference plus Noise Ratio of frequency range i, comprise two kinds of situations:
Situation when sub-frame of uplink m frequency range i does not dispatch PUSCH/PUCCH, or the situation of sub-frame of uplink m frequency range i while having dispatched PUSCH/PUCCH.
Correspondingly, if sub-frame of uplink m frequency range i does not dispatch PUSCH/PUCCH, calculate the Signal to Interference plus Noise Ratio of frequency range i, comprising:
In sub-frame of uplink m, the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/P
a(m,i)；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the user k of reception, P
a(m, i) is the reception gross power of frequency range i.
If sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, calculate the Signal to Interference plus Noise Ratio of frequency range i, comprising:
If sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, the reception gross power of frequency range i is P
a(m, i), the received power of PUSCH or PUCCH is P
s(m, i), in sub-frame of uplink m, the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/(P
a(m,i)-P
s(m,i))；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the user k of reception.
By such scheme, make access network equipment can obtain more accurately the channel situation of up link, so that be user assignment frequency resource afterwards.
S130: according to the Signal to Interference plus Noise Ratio of frequency range, be user assignment uplink transmission resource.
Particularly, during for the PRB resource of user assignment sub-frame of uplink, in system available resources, selection can carrying user data amount and the best Continuous Band of Signal to Interference plus Noise Ratio distribute to user.
The said method that the present invention proposes, by according to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band, directly in each up PUSCH subframe, measure the interference noise situation of each subband.Said method, can effectively overcome in prior art, in LTE system, the resource and the PUSCH resource that are used for sending SRS signal are nonoverlapping in time domain, SRS and PUSCH time-domain position are different, institute is disturbed also just different, cause Signal to Interference plus Noise Ratio that SRS symbol measures and the deviation of the interference calculation between the Signal to Interference plus Noise Ratio of user PUSCH channel, thereby the Signal to Interference plus Noise Ratio measuring by SRS symbol can not accurately represent the problem of the Signal to Interference plus Noise Ratio of user PUSCH channel.The said method that the present invention proposes, can realize the Signal to Interference plus Noise Ratio that accurately estimates each up each subband of PUSCH subframe of user, during upper line frequency selection scheduling, can at the Signal to Interference plus Noise Ratio of this each subband of subframe, for user, accurately select optimum subband according to user.The said method proposing based on the present invention is dispatched, and can accurately select optimal frequency resource for user, effectively improves systematic function.
As shown in Figure 2, the embodiment of the invention also discloses a kind of equipment 100 of uplink scheduling, it is characterized in that, comprise configuration module 110, computing module 120 and distribution module 130.
Wherein, configuration module 110, is used to user to configure SRS frequency range, and periodically receives the SRS signal that user sends.
Particularly, computing module 120 comprises: the calculating while not dispatching PUSCH/PUCCH for sub-frame of uplink m frequency range i, or the calculating of sub-frame of uplink m frequency range i while having dispatched PUSCH/PUCCH;
Accordingly, if when sub-frame of uplink m frequency range i does not dispatch PUSCH/PUCCH, computing module 120 is for calculating the Signal to Interference plus Noise Ratio of frequency range i, and at sub-frame of uplink m, the Signal to Interference plus Noise Ratio of user k frequency range i is
SINR
k,m(i)=S
k(i)/P
a(m,i)；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the user k of reception, P
a(m, i) is the reception gross power of frequency range i.
When if sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, computing module 120 is for when sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, and the reception gross power of frequency range i is P
a(m, i), the received power of PUSCH or PUCCH is P
s(m, i),, in sub-frame of uplink m, the Signal to Interference plus Noise Ratio that computing module 120 calculates user k frequency range i is
SINR
k,m(i)=S
k(i)/(P
a(m,i)-P
s(m,i))；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the user k of reception.
In addition, configuration module 110 is also divided into a plurality of subbands for whole SRS band bandwidth with by whole up PUSCH band bandwidth, wherein, frequency range i is one of them subband, can accomplish like this to make the available signal power according to SRS calculated signals user, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band i.
Particularly, when distribution module 130 is used to the PRB resource of user assignment sub-frame of uplink, in system available resources, selection can carrying user data amount and the best Continuous Band of Signal to Interference plus Noise Ratio distribute to user.
In actual applications, the said equipment occurs with the form of the access network equipments such as base station conventionally.
The said equipment that the present invention proposes, by according to SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band, directly in each up PUSCH subframe, measure the interference noise situation of each subband.The said equipment that the present invention proposes, can effectively overcome in prior art, in LTE system, the resource and the PUSCH resource that are used for sending SRS signal are nonoverlapping in time domain, SRS and PUSCH time-domain position are different, institute is disturbed also just different, cause Signal to Interference plus Noise Ratio that SRS symbol measures and the deviation of the interference calculation between the Signal to Interference plus Noise Ratio of user PUSCH channel, thereby the Signal to Interference plus Noise Ratio measuring by SRS symbol can not accurately represent the problem of the Signal to Interference plus Noise Ratio of user PUSCH channel.The said equipment that the present invention proposes, can realize the Signal to Interference plus Noise Ratio that accurately estimates each up each subband of PUSCH subframe of user, during upper line frequency selection scheduling, can at the Signal to Interference plus Noise Ratio of this each subband of subframe, for user, accurately select optimum subband according to user.The said equipment proposing based on the present invention is dispatched, and can accurately select optimal frequency resource for user, effectively improves systematic function.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is to come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, this program, when carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module usings that the form of software function module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The above is only part execution mode of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a method for uplink scheduling, is characterized in that, comprises the following steps:
For user configures SRS frequency range, and periodically receive the SRS signal that described user sends;
According to described SRS calculated signals user's available signal power, at each sub-frame of uplink, calculate respectively the interference noise power of corresponding band, calculate the Signal to Interference plus Noise Ratio of corresponding band;
According to the Signal to Interference plus Noise Ratio of described corresponding band, it is described user assignment uplink transmission resource.
2. the method for uplink scheduling according to claim 1, is characterized in that, also comprises:
Whole SRS band bandwidth and whole up PUSCH band bandwidth is divided into a plurality of subbands.
3. the method for uplink scheduling according to claim 2, is characterized in that, calculates the Signal to Interference plus Noise Ratio of frequency range i, comprising:
If sub-frame of uplink m frequency range i does not dispatch PUSCH/PUCCH, in sub-frame of uplink m, the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/P
a(m,i)；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the described user k of reception, P
a(m, i) is the reception gross power of frequency range i.
4. the method for uplink scheduling according to claim 2, is characterized in that, calculates the Signal to Interference plus Noise Ratio of frequency range i, comprising:
If sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, the reception gross power of frequency range i is P
a(m, i), the received power of described PUSCH or PUCCH is P
s(m, i), in sub-frame of uplink m, the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/(P
a(m,i)-P
s(m,i))；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the described user k of reception.
5. according to the method for one of any described uplink scheduling of claim 1 to 4, it is characterized in that, is described user assignment uplink transmission resource, comprising:
During for the PRB resource of user assignment sub-frame of uplink, in system available resources, selection can carrying user data amount and the best Continuous Band of Signal to Interference plus Noise Ratio distribute to described user.
6. an equipment for uplink scheduling, is characterized in that, comprises configuration module, computing module and distribution module,
Described configuration module, is used to user to configure SRS frequency range, and periodically receives the SRS signal that described user sends;
Described computing module, for according to described SRS calculated signals user's available signal power, calculates respectively the Signal to Interference plus Noise Ratio of the interference noise power calculating corresponding band of corresponding band at each sub-frame of uplink;
Described distribution module, for according to the Signal to Interference plus Noise Ratio of described corresponding band, is described user assignment uplink transmission resource.
7. the equipment of uplink scheduling as claimed in claim 6, is characterized in that, the equipment configuration module of described uplink scheduling is also for being divided into a plurality of subbands by whole SRS band bandwidth with by whole up PUSCH band bandwidth.
8. the equipment of uplink scheduling as claimed in claim 7, is characterized in that, described computing module, for calculating the Signal to Interference plus Noise Ratio of frequency range i, comprising:
If sub-frame of uplink m frequency range i does not dispatch PUSCH/PUCCH, in sub-frame of uplink m, described computing module calculates the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/P
a(m,i)；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the described user k of reception, P
a(m, i) is the reception gross power of frequency range i.
9. the equipment of uplink scheduling as claimed in claim 7, is characterized in that, described computing module, for calculating the Signal to Interference plus Noise Ratio of frequency range i, comprising:
If sub-frame of uplink m frequency range i has dispatched PUSCH/PUCCH, the reception gross power of frequency range i is P
a(m, i), the received power of described PUSCH or PUCCH is P
s(m, i),, in sub-frame of uplink m, described computing module calculates the Signal to Interference plus Noise Ratio of user k frequency range i
SINR
k,m(i)=S
k(i)/(P
a(m,i)-P
s(m,i))；
Wherein, frequency range i is one of them subband, S
k(i) be the SRS signal of the described user k of reception.
10. the equipment of the uplink scheduling as described in one of as any in claim 6 to 9, it is characterized in that, when described distribution module is used to the PRB resource of user assignment sub-frame of uplink, in system available resources, selection can carrying user data amount and the best Continuous Band of Signal to Interference plus Noise Ratio distribute to described user.
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| CN106793094A (en) * | 2015-11-20 | 2017-05-31 | 普天信息技术有限公司 | Uplink resource allocating 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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|---|---|
| CN103702431B (en) | 2017-07-14 |
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