CN102469604B - Method and device for distributing resource - Google Patents
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- CN102469604B CN102469604B CN201010543484.6A CN201010543484A CN102469604B CN 102469604 B CN102469604 B CN 102469604B CN 201010543484 A CN201010543484 A CN 201010543484A CN 102469604 B CN102469604 B CN 102469604B
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Abstract
The embodiment of the invention provides a method for distributing a resource. The method comprises the following steps of: configuring a transmission bandwidth and a sub-frame of an SRS (Sounding Reference Signal) for a terminal by a network device; distributing an SRS transmission resource to the terminal by the network device according to a preset resource distributing sequence, wherein the preset resource distributing sequence has a preferential distributing sequence from a time domain resource to a frequency domain resource, an add-even subcarrier and a code domain resource in turn while a multi-dimensional resource is distributed; and informing the terminal of the SRS transmission resource distributed to the terminal by the network device. The embodiment of the invention also provides the network device. According to the scheme provided by the invention, the resource which has major influence on a system performance is preferentially distributed, so that the purposes of reducing interference among users and increasing the system performance are achieved. Besides, according to the scheme provided by the invention, the change in a present system is small, the compatibility of the system is free from being influenced, and the realization is simple and high-efficient.
Description
Technical field
The present invention relates to moving communicating field, particularly, the present invention relates to the method and apparatus that resource is distributed.
Background technology
Present mobile communication more and more trends towards providing the multimedia service of high rate data transmission, and 3G technology has become the main research field of present mobile communication.3GPP (3rd Generation Partnership Project, third generation partner program) is devoted to the evolution as 3G system by LTE (Long Term Evolution, Long Term Evolution) system.LTE-A (Long Term Evolution-Advanced, Long Term Evolution is senior) is the follow-up evolution of LTE technology, is commonly called as 3.9G.LTE (Long Term Evolution, Long Term Evolution) compares with 4G, and except maximum bandwidth, two indexs of up peak rate require a little less than 4G, other technologies index has all reached the requirement of 4G standard.
In said system, in system, introduced SRS (Sounding reference signal, Sounding reference signal).The main application of SRS signal is to make network side can obtain UE (User Equipment as ascending channel detecting, subscriber equipment) up CQI (Channel Quality Indicator, CQI) information and downlink forming information, the basic problem of up Sounding reference signal design research is exactly to select suitable UE in certain bandwidth range, to send SRS with a kind of more rational cycle, guarantees the accuracy of the accuracy that CQI estimates and the downlink forming information obtaining based on this SRS with minimum Resources Consumption.
The bandwidth of SRS transmission can be configured to PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) carry out the bandwidth of frequency domain dispatching, also the part bandwidth that can carry out frequency domain dispatching to PUSCH is carried out Sounding, the resource location of SRS as shown in Figure 1, wherein, transverse axis is the time, and the longitudinal axis is frequency.
In order to support SRS band width configuration comparatively flexibly, and reduce signaling consumption, SRS bandwidth should not be a fixing value as far as possible, and bandwidth should be PRB (Physical Resource Block, Physical Resource Block) integral multiple, and need to reduce the number of option as far as possible.Determined after repeated discussions following band width configuration structure, take bandwidth as 100 PRB be example, configuration parameter is as shown in table 1:
Table 1 80 <
m in≤110 o'clock upstream bandwidths
sRS, bandN
b, b=0,1,2,3 value.
In table 1, listed corresponding code tree structure under different SRS band width configuration, UE depends on B with which kind of bandwidth for transmission
sRSvalue, same, according to B
sRSvalue just can obtain UE and need how many times just can complete the frequency hopping transmission in whole frequency hopping bandwidth, thereby also can obtain the transmission cycle of SRS.For example, under 20M bandwidth situation, up have 100 PRB, and the shared PRB number of PUSCH is 96, can get the situation of SRS band width configuration 0 and 1, if select band width configuration 1, and SRS frequency hopping bandwidth is B
sRS=1, UE need to be Sounding to obtain the estimation to up channel on 48 PRB, and UE single SRS transmission bandwidth is B
sRS=3, be that UE is Sounding at every turn on 4 PRB, need just can complete the Sounding to whole frequency hopping bandwidth 48/4=12 time, that is to say and within the time of defined, need just can complete the Sounding to whole frequency hopping bandwidth 12 times, thereby just can calculate the cycle of transmitting SRS.
For TDD, SRS only transmits on the sub-frame of uplink having configured and UpPTS.Table 2 is an example of configuration.
The sub-frame configuration of table 2TDD system SRS
After determining, the sub-frame configuration of SRS just can know SRS need to send on which time-domain position.Thereby can plan the time-domain position of SRS, all users can not clashed on identical time domain and frequency domain position.The maximum UE number of supporting in SRS sub-frame configuration Shi Yi community, the cycle of SRS calculates, according to each UE, sending SRS on full bandwidth calculates, this is because SRS cycle and transmission bandwidth are proportional relations, if transmission bandwidth diminishes, the cycle of SRS also needs to diminish, and could complete at the appointed time the Sounding process to whole frequency hopping bandwidth.According to 36.211 comb=2 that it is stipulated in the agreement that transmits, cycshift on code territory (circulation skew)=8, so if SRS sends with full bandwidth, the user's number that can hold is at the same time 16, if the maximum UE number of supporting in community is 1000, and 1000/16=62.5, if the cycle of SRS is 100ms, in the radio frames of a 10ms, need to have 6.25 upward position to pass SRS, round up, obtaining sub-frame configuration is 7.
The frequency comb parameter of UE " Transmission comb ", for determining that this UE carries out SRS transmission in transmission or even subcarriers in odd subcarriers;
N
cS_usable_maxfor the maximum code that current area is supported is divided number;
According to known frequency domain, time domain, code territory and transmission comb resource, can distribute these resources, different user can not clashed at same resource location.This is also the thing that RRM RRM algorithm divides timing to process in SRS resource, the distribution to frequency domain, time domain, code territory and transmission comb resource.
Yet the current SRS resource distributive majority is only considered by the resource of different user separately, not consider whether different resource allocation algorithms exerts an influence to performance.Due to the resource of SRS, distributing is the distribution of multidimensional resource, so different resource allocation order also can exert an influence for properties of product.Especially, under the state that number of users does not reach capacity in system, this impact will be very obvious.
Therefore, be necessary to propose a kind of effective technical scheme, optimize SRS resource and distribute, reach the object that reduces inter-user interference, elevator system performance.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency, when distributing SRS resource, the characteristic of and multidimensional resource excellent according to system performance, priority allocation is on the larger resource of systematic function impact, thereby realizes the object that reduces inter-user interference, elevator system performance.
In order to achieve the above object, embodiments of the invention have proposed a kind of method that resource is distributed on the one hand, comprise the following steps:
Network equipment is transmission bandwidth and the subframe of terminal configuration SRS;
It is described terminal distribution SRS transfer resource that described network equipment be take the resource allocation order of being scheduled to, described predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain resource, frequency domain resource, odd even subcarrier and code territory resource.
Described network equipment is notified described terminal by the SRS transfer resource of distributing to described terminal.
Embodiments of the invention have proposed a kind of network equipment on the other hand, comprise configuration module and sending module,
Described configuration module, be used to transmission bandwidth and the subframe of terminal configuration SRS, and to take the resource allocation order of being scheduled to be described terminal distribution SRS transfer resource, described predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain position, frequency domain position, odd even subcarrier and cyclic shift;
Described sending module, for notifying described terminal by the SRS transfer resource of distributing to described terminal.
The such scheme that the present invention proposes, affects larger resource by priority allocation to systematic function, thereby realizes the object that reduces inter-user interference, elevator system performance.Avoid user assignment in identical time-domain resource, between the code territory resource on effectively reducing at the same time, transmission comb resource, frequency domain resource different user, disturb, and can effectively reduce the operand on the dsp processor on same time point, effective elevator system performance.In addition, 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 part 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 time-frequency position distribution schematic diagram of system bandwidth Sounding reference signal while being 25 PRB;
Fig. 2 is that existing resource is distributed schematic diagram;
Fig. 3 is the method flow diagram that embodiment of the present invention resource is distributed;
Fig. 4 is the schematic diagram that embodiment of the present invention resource is distributed;
Fig. 5 is the schematic diagram that embodiment of the present invention resource is distributed search procedure;
Fig. 6 is the structural representation of embodiment of the present invention network equipment.
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.
Conventionally, the main contents that SRS resource is distributed are frequency domain, time domain, code territory and transmission comb resource.Take 20M bandwidth as example, if PUSCH can with PRB number be 80, and the frequency hopping bandwidth of SRS is 80 PRB, Fig. 2 can illustrate that the SRS of different UEs transmits shared resource distribution situation, the SRS transmission cycle of all UE is identical, transmission bandwidth is also identical, and existing resource is distributed as shown in Figure 2.Wherein, transverse axis is PRB axle, and the longitudinal axis is time shaft, available ascending time slot position of width means of each grid.In SRS resource is distributed, minimum partition size is 4 PRB, and in figure below, each grid represents 4 PRB, in the situation that band width configuration is 2, and maximum desirable 80 PRB of frequency hopping bandwidth.First current resource allocation algorithm for distributing same resource on same time domain and frequency domain position, with different orthogonal code sequence or odd even subcarrier, distinguish, as shown in Figure 2, UE1, UE2 and UE3 will be distributed on same time domain and frequency domain position, and the interference between the UE causing is like this very large.And above-mentioned resource allocation methods also can increase the operand on the dsp processor on same time point, reduce the performance of system.
In order to realize the present invention's object, the embodiment of the present invention has proposed a kind of method that resource is distributed, and comprises the following steps: network equipment is transmission bandwidth and the subframe of terminal configuration SRS; It is described terminal distribution SRS transfer resource that described network equipment be take the resource allocation order of being scheduled to, described predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain resource, frequency domain resource, odd even subcarrier and code territory resource; Described network equipment is notified described terminal by the SRS transfer resource of distributing to described terminal.
In an embodiment of the present invention, network equipment includes but not limited to base station equipment.
As shown in Figure 3, the method flow diagram for embodiment of the present invention resource is distributed, comprises the following steps:
S110: network equipment is transmission bandwidth and the subframe of terminal configuration SRS.
In step S110, first network equipment can be transmission bandwidth and the subframe of terminal configuration SRS.After SRS transmission bandwidth configuration and SRS sub-frame configuration are determined, next need further to determine the scope that SRS time-domain position, frequency domain position etc. can values.
S120: it is terminal distribution SRS transfer resource that network equipment be take the resource allocation order of being scheduled to.
In step S120, it is terminal distribution SRS transfer resource that network equipment be take the resource allocation order of being scheduled to, particularly, predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain resource, frequency domain resource, odd even subcarrier and code territory resource.
By analysis before, can know, add at random or not while optimizing Resources allocation, easily increase the burden of inter-system interference and increase system.Therefore the scheme that, the present invention proposes is optimized allocation of resources order.
As the embodiment of the present invention, multidimensional resource comprises:
I
sRS, the configuration index that the frame number of the time domain of SRS and subframe numbers calculate;
N
rRC, the frequency domain position of SRS;
K
tC, odd even subcarrier;
Therefore, network equipment is preferably the I that terminal distribution is different
sRS, make the SRS transfer resource of terminal separated on time-domain position.
If can be in time domain separate users, can avoid user assignment in identical time-domain resource, between the code territory resource on effectively reducing at the same time, transmission comb resource, frequency domain resource different user, disturb, and can effectively reduce the operand on the dsp processor on same time point, effective elevator system performance.
As embodiments of the invention, when network equipment cannot be the different I of terminal distribution
sRStime, network equipment is the n that terminal distribution is different
rRC, make the SRS transfer resource of terminal separated on frequency domain position.
As embodiments of the invention, when network equipment cannot be the different n of terminal distribution
rRCtime, network equipment is the k that terminal distribution is different
tC, make the SRS transfer resource of terminal be positioned at different subcarriers.
As embodiments of the invention, when network equipment cannot be the different k of terminal distribution
tCtime, network equipment is that terminal distribution is different
make the SRS transfer resource of terminal there is different cyclic shift codes.
Therefore, when distributing SRS resource, should pay the utmost attention on time-domain position user is diverged, if time-domain positions all in one-period are all finished using, start to distribute frequency domain resource, as shown in Figure 4, available time-domain position only has two, after UE3 arrives, will be multiplexing in time domain with UE1, but on frequency domain position, will preferentially diverge.When all time-domain positions and frequency domain position are all assigned, need to consider the distribution of odd and even number subcarrier, by resource in odd number even subcarriers separately, the code territory resource of the cyclic shift of finally reallocating.Allocation order is as follows:
The SRS resource allocation order that the present invention proposes is greatly improved than current order-assigned SRS resource according to this order-assigned resource in systematic function.
Generally speaking, the scheme that the present invention proposes is exactly in the situation that current SRS frequency hopping bandwidth, SRS transmission bandwidth and SRS transmission cycle are certain, finds one group of index combination that meets the SRS resource requirement of current UE
Consider the factors such as processing complexity, resource overhead, SRS jamming performance of receiving terminal, index combination is set while finding resource
in the search order of each element be followed successively by
first keep
k
tC, n
rRCconstant, travel through all available I
sRS; If do not find, keep
k
tCconstant, get current B
sRSfirst I in reserved resource collection
sRS, then travel through all available n
rRC, the rest may be inferred, and concrete search procedure schematic diagram is as shown in Figure 5.
S130: network equipment will be distributed to the SRS transfer resource notification terminal of terminal.
Thereafter, network equipment arranges index combination by the corresponding resource of terminal
notification terminal.
The embodiment of the present invention has also proposed a kind of network equipment 200 on the other hand, as shown in Figure 6, comprises configuration module 210 and sending module 220.
Wherein, configuration module 210 is used to transmission bandwidth and the subframe of terminal configuration SRS, and to take the resource allocation order of being scheduled to be terminal distribution SRS transfer resource, predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain position, frequency domain position, odd even subcarrier and cyclic shift.
Sending module 220 is for distributing to the SRS transfer resource notification terminal of terminal.
By analysis before, can know, add at random or not while optimizing Resources allocation, easily increase the burden of inter-system interference and increase system.Therefore the scheme that, the present invention proposes is optimized allocation of resources order.
As the embodiment of the present invention, the multidimensional resource that configuration module 210 is processed comprises:
I
sRS, the configuration index that the frame number of the time domain of SRS and subframe numbers calculate;
N
rRC, the frequency domain position of SRS;
K
tC, odd even subcarrier;
Therefore, configuration module 210 is preferably the I that terminal distribution is different
sRS, make the SRS transfer resource of terminal separated on time-domain position.
If can be in time domain separate users, can avoid user assignment in identical time-domain resource, between the code territory resource on effectively reducing at the same time, transmission comb resource, frequency domain resource different user, disturb, and can effectively reduce the operand on the dsp processor on same time point, effective elevator system performance.
As embodiments of the invention, when configuration module 210 cannot be the different I of terminal distribution
sRStime, configuration module 210 is the n that terminal distribution is different
rRC, make the SRS transfer resource of terminal separated on frequency domain position.
As embodiments of the invention, when configuration module 210 cannot be the different n of terminal distribution
rRCtime, configuration module 210 is the k that terminal distribution is different
tC, make the SRS transfer resource of terminal be positioned at different subcarriers.
As embodiments of the invention, when configuration module 210 cannot be the different k of terminal distribution
tCtime, configuration module 210 is that terminal distribution is different
make the SRS transfer resource of terminal there is different cyclic shift codes.
Therefore, when distributing SRS resource, should pay the utmost attention on time-domain position user is diverged, if time-domain positions all in one-period are all finished using, start to distribute frequency domain resource, as shown in Figure 4, available time-domain position only has two, after UE3 arrives, will be multiplexing in time domain with UE1, but on frequency domain position, will preferentially diverge.When all time-domain positions and frequency domain position are all assigned, need to consider the distribution of odd and even number subcarrier, by resource in odd number even subcarriers separately, the code territory resource of the cyclic shift of finally reallocating.Allocation order is as follows:
The SRS resource allocation apparatus that the present invention proposes is greatly improved than current order-assigned SRS resource according to this order-assigned resource in systematic function.
Generally speaking, the said equipment that the present invention proposes is exactly in the situation that current SRS frequency hopping bandwidth, SRS transmission bandwidth and SRS transmission cycle are certain, finds one group of index combination that meets the SRS resource requirement of current UE
Consider the factors such as processing complexity, resource overhead, SRS jamming performance of receiving terminal, index combination is set while finding resource
in the search order of each element be followed successively by
first keep
k
tC, n
rRCconstant, travel through all available I
sRS; If do not find, keep
k
tCconstant, get current B
sRSfirst I in reserved resource collection
sRS, then travel through all available n
rRC, the rest may be inferred, and the concrete search procedure schematic diagram of configuration module 210 is as shown in Figure 5.
Thereafter, sending module 220 will be distributed to the SRS transfer resource notification terminal of terminal.
In the embodiment of above-mentioned network equipment, network equipment includes but not limited to base station equipment.
In the process of distributing in SRS resource, Multi-attributes due to resource, Resources allocation in need to a plurality of resource collections of odd even subcarrier on time domain, frequency domain, code territory and frequency domain, the order of Resources allocation also has a great impact systematic function, scheme disclosed by the invention by determining the order that resource is distributed in SRS resource allocation process, according to time domain → frequency domain → odd even subcarrier → code territory, carry out Resources allocation, be conducive to improve systematic function.
Said method or equipment that the present invention proposes, have following one or more advantage:
Avoid user assignment in identical time-domain resource, between the code territory resource on effectively reducing at the same time, transmission comb resource, frequency domain resource different user, disturb; Can effectively reduce the operand on the dsp processor on same time point, effectively elevator system performance; Change to existing system is very little, can not affect the compatibility of system, and realizes simple, efficient.
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 the preferred embodiment 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 (12)
1. the method that resource is distributed, is characterized in that, comprises the following steps:
Network equipment is transmission bandwidth and the subframe of terminal configuration reference signal SRS;
It is described terminal distribution SRS transfer resource that described network equipment be take the resource allocation order of being scheduled to, described predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain resource, frequency domain resource, odd even subcarrier and code territory resource;
Described network equipment is notified described terminal by the SRS transfer resource of distributing to described terminal.
2. the method for claim 1, is characterized in that, described multidimensional resource comprises:
I
sRS, the configuration index that the frame number of the time domain of SRS and subframe numbers calculate;
N
rRC, the frequency domain position of SRS;
K
tC, odd even subcarrier;
3. method as claimed in claim 2, is characterized in that, described network equipment is the I that described terminal distribution is different
sRS, make the SRS transfer resource of described terminal separated on time-domain position.
4. method as claimed in claim 3, is characterized in that, when described network equipment cannot be the different I of described terminal distribution
sRStime, described network equipment is the n that described terminal distribution is different
rRC, make the SRS transfer resource of described terminal separated on frequency domain position.
5. method as claimed in claim 4, is characterized in that, when described network equipment cannot be the different n of described terminal distribution
rRCtime, described network equipment is the k that described terminal distribution is different
tC, make the SRS transfer resource of described terminal be positioned at different subcarriers.
6. method as claimed in claim 5, is characterized in that, when described network equipment cannot be the different k of described terminal distribution
tCtime, described network equipment is that described terminal distribution is different
make the SRS transfer resource of described terminal there is different cyclic shift codes.
7. a network equipment, is characterized in that, comprises configuration module and sending module,
Described configuration module, be used to transmission bandwidth and the subframe of terminal configuration reference signal SRS, and to take the resource allocation order of being scheduled to be described terminal distribution SRS transfer resource, described predetermined resource allocation order comprises: while distributing multidimensional resource, priority allocation is sequentially followed successively by time-domain resource, frequency domain resource, odd even subcarrier and code territory resource;
Described sending module, for notifying described terminal by the SRS transfer resource of distributing to described terminal.
8. network equipment as claimed in claim 7, is characterized in that, the described multidimensional resource that described configuration module distributes comprises:
I
sRS, the configuration index that the frame number of the time domain of SRS and subframe numbers calculate;
N
rRC, the frequency domain position of SRS;
K
tC, odd even subcarrier;
9. network equipment as claimed in claim 8, is characterized in that, described configuration module is the I that described terminal distribution is different
sRS, make the SRS transfer resource of described terminal separated on time-domain position.
10. network equipment as claimed in claim 9, is characterized in that, when described configuration module cannot be the different I of described terminal distribution
sRStime, described configuration module is the n that described terminal distribution is different
rRC, make the SRS transfer resource of described terminal separated on frequency domain position.
11. network equipments as claimed in claim 10, is characterized in that, when described configuration module cannot be the different n of described terminal distribution
rRCtime, described configuration module is the k that described terminal distribution is different
tC, make the SRS transfer resource of described terminal be positioned at different subcarriers.
12. network equipments as claimed in claim 11, is characterized in that, when described configuration module cannot be the different k of described terminal distribution
tCtime, described configuration module is that described terminal distribution is different
make the SRS transfer resource of described terminal there is different cyclic shift codes.
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| CN103686861B (en) | 2012-09-06 | 2017-06-13 | 华为技术有限公司 | The method and apparatus of transmission of reference signals in equipment room D2D communications |
| CN106559841B (en) * | 2015-09-25 | 2020-03-06 | 北京大学 | Distribution method and device of LTE uplink physical control channel PUCCH resources |
| CN108737051A (en) * | 2017-04-25 | 2018-11-02 | 深圳市金立通信设备有限公司 | A kind of transmission method, relevant device and the system of detection reference signal SRS |
| CN109548147B (en) * | 2017-08-11 | 2021-08-06 | 维沃移动通信有限公司 | Resource allocation method, base station and terminal |
| JP2021516886A (en) | 2018-02-05 | 2021-07-08 | 日本電気株式会社 | Resource mapping methods and devices for data transmission, and data reception methods and devices |
| CN111479324B (en) * | 2019-01-24 | 2023-04-07 | 中国移动通信有限公司研究院 | Resource allocation method, network side equipment and terminal |
| CN112769533B (en) * | 2021-04-07 | 2021-07-06 | 网络通信与安全紫金山实验室 | Positioning reference signal distribution method, positioning method and base station resource allocation method |
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