CN102300329A - Method for determining downlink frequency selection scheduling resource and device - Google Patents
Method for determining downlink frequency selection scheduling resource and device Download PDFInfo
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Abstract
The invention discloses a method for determining a downlink frequency selection scheduling resource and a device, which aim at selecting a physical resource block corresponding to a subband with maximal subband channel quality indicator (CQI) value or with highest multi-channel server (MCS) grade value of the subband CQI information when the downlink frequency selection scheduling resource is determined, so a good channel condition can be guaranteed, and the downlink throughput can be improved. The method comprises the steps that: the present subband channel quality indicator (CQI) information reported by a user terminal is received by a basic station, a burst packet (BP) corresponding to the subband is determined according to the present subband CQI information, and the CQI value of the BP corresponding to the subband is updated; other subbands being attributive to the same broadband frequency band with the subband are determined, and the subband CQI value corresponding to other subbands is reduced; and a subband with the highest CQI value is determined from the subbands of the BP, and a resource block group (RBG) corresponding to the determined subband is determined as the downlink frequency selection scheduling resource corresponding to the BP.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of the determine method and the device of line frequency degree of recruiting resource down.
Background technology
According to 3GPP 36.211 agreements, user terminal (UE) is periodically at PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) goes up to the descending CQI of base station feedback (Channel Quanltity Indicator, the channel quality index), this descending CQI is used to indicate the satisfaction of described UE to current downlink channel.
At present, in the LTE-TDD system, support that the last pattern of CQI information that periodically reports of PUCCH can be as shown in table 1 below:
Table 1 is for reporting the mode list of CQI information on PUCCH
According to agreement 3GPP 36.213, the downlink system bandwidth is divided into
Individual subband, and this N subband is referred to J BPs (Bandwidth Parts, broadband frequency range),
Be the downlink system total bandwidth, k is the wide amount of bandwidth of subband, and the configuration relation of downlink system total bandwidth (being System Bandwidth), subband roomy little (being Subband Size k) and BPs (being Bandwidth Parts) can be as shown in table 2 below:
Table 2 is that the roomy little configuration relation with BPs of downlink system total bandwidth, subband is tabulated
At present, can be to the method that the MCS grade point of the subband CQI information correspondence of the RBG (Resource Block Group, Resource Block group) of BP correspondence is handled referring to method flow as shown in Figure 1, this method can comprise:
The BP that described current sub belongs to is determined according to described current sub CQI information in step 102, base station.
The RBG of described BP correspondence is calculated in step 103, base station.
By above-mentioned flow process as can be known, the CQI value of all subbands that belongs to same BP in the prior art is identical, and the corresponding MCS grade point of CQI value is identical.
As shown in table 2, suppose overall system bandwidth
Subband size k=8, BPs J=4 (representing with BP1, BP2, BP3, BP4) calculates the subband number
Suppose that the subband number that is respectively BP1, BP2, BP3, BP4 distribution is followed successively by 4,3,3,3; According to the CQI information that current sub reports the CQI information of other subband correspondences among the BP under this subband is upgraded; When line frequency degree of recruiting need be descended in the base station, dispatch the pairing RBG of low level subband CQI among this BP.Generally speaking, the channel condition of the RBG of the current subband correspondence that reports CQI is better, therefore adopt existing technical scheme, when descending line frequency degree of recruiting at each BP, the probability of choosing the RBG of the current CQI of reporting subband correspondence is approximately 25% or 33%, therefore 75% or 67% the probability of having an appointment is chosen the RBG of the relatively poor subband correspondence of channel condition, therefore, has the low problem of downlink throughput capacity on very big probability.
Summary of the invention
Above-mentioned technical problem at the prior art existence, the embodiment of the invention provides a kind of the determine method and the device of line frequency degree of recruiting resource down, when determining to descend line frequency degree of recruiting resource to be implemented in, can select the RBG of the highest subband correspondence of the corresponding MCS grade point of CQI value maximum or CQI value, thereby can guarantee the good channel condition, improve downlink throughput capacity.
A kind of definite method of line frequency degree of recruiting resource down comprises:
The base station receives the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
The base station is upgraded the CQI value of described BP according to described current sub CQI information;
The base station reduces the CQI value of other subband correspondences except that described current sub among the described BP;
Determine the highest subband of CQI value in the subband of base station from described BP, and the Resource Block group RBG of the subband correspondence that the CQI value is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
A kind of definite method of line frequency degree of recruiting resource down comprises:
The base station receives the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
The base station is upgraded the CQI value of described BP according to described current sub CQI information;
The base station reduces the corresponding modulation coding mode MCS grade point of CQI value of other subbands except that described current sub among the described BP;
Determine the corresponding the highest subband of MCS grade point of CQI value in the subband of base station from described BP, and the Resource Block group RBG of the subband correspondence that the MCS grade point is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
A kind of definite device of line frequency degree of recruiting resource down comprises:
Receiving element is used to receive the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
CQI value updating block is used for according to described current sub CQI information the CQI value of described BP being upgraded;
CQI value processing unit is used for reducing the CQI value of other the subband correspondences of described BP except that described current sub;
The resource determining unit is used for determining the highest subband of CQI value from the subband of described BP, and the Resource Block group RBG of the subband correspondence that the CQI value is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
A kind of definite device of line frequency degree of recruiting resource down comprises:
Receiving element is used to receive the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
CQI value updating block is used for according to described current sub CQI information the CQI value of described BP being upgraded;
MCS grade point processing unit is used for reducing the corresponding modulation coding mode MCS grade point of CQI value of other subbands of described BP except that described current sub;
The resource determining unit determine the corresponding the highest subband of MCS grade point of CQI value in the subband from described BP, and the Resource Block group RBG of the subband correspondence that the MCS grade point is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
In the embodiment of the invention, the base station receives the current sub CQI information of user terminal to send up, and determines the BP of described current sub correspondence according to this current subband CQI information, and according to described current sub CQI information the CQI value of described BP is upgraded; Reduce the MCS grade point of the CQI value or the CQI Chinese character correspondence of other subbands except that current sub among the described BP again, from BP, choose following line frequency degree of the recruiting resource of the RBG of the highest subband correspondence of CQI value the highest grade of MCS or that the CQI value is corresponding at last as described BP correspondence; Adopt technical solution of the present invention, owing to reduced the MCS grade point of the CQI value or the CQI information correspondence of other subbands among the same BP, thereby make that the corresponding MCS grade point of the CQI value of current sub or CQI value is higher, thereby make follow-up when frequency degree of recruiting resource, the RBG that chooses the current sub correspondence on the very big probability is as following line frequency degree of recruiting resource, then its corresponding channel condition is better because current sub can report the CQI value, therefore, the RBG conduct of employing current sub correspondence line frequency degree of recruiting resource down can be guaranteed channel condition, improves downlink throughput capacity.
Description of drawings
The method flow diagram of Fig. 1 for the MCS grade point of the CQI value correspondence of the RBG of BP correspondence being handled in the prior art;
Fig. 2 is for determining the method flow diagram of line frequency degree of recruiting resource down in the embodiment of the invention one;
The method flow diagram that Fig. 3 handles the CQI value of each subband correspondence among the BP for specific implementation in the embodiment of the invention one;
Fig. 4 is for determining the method flow diagram of line frequency degree of recruiting resource down in the embodiment of the invention two;
The method flow diagram that Fig. 5 handles the corresponding MCS grade point of the CQI value of each subband among the BP for specific implementation in the embodiment of the invention two;
Fig. 6 is for determining the structural representation of the device of line frequency degree of recruiting resource down in the embodiment of the invention one;
Fig. 7 is for determining the structural representation of the device of line frequency degree of recruiting resource down in the embodiment of the invention two.
Embodiment
Above-mentioned technical problem at the prior art existence, the embodiment of the invention provides a kind of the determine method and the device of line frequency degree of recruiting resource down, when determining to descend line frequency degree of recruiting resource to be implemented in, the RBG that can select the highest subband correspondence of the corresponding MCS grade point of CQI value maximum or CQI value is as following line frequency degree of recruiting resource, thereby can guarantee the good channel condition, improve downlink throughput capacity.Determine that the method for line frequency degree of recruiting resource can be as follows down: the base station receives the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information; The base station is upgraded the CQI value of described BP according to described current sub CQI information; The base station reduces the CQI value or the corresponding MCS grade point of CQI value of other subband correspondences except that described current sub among the described BP; Determine the corresponding the highest subband of MCS grade point of CQI value or CQI value in the subband of base station from described BP, and the RBG of the MCS grade point correspondence of subband that the CQI value is the highest or CQI value correspondence is defined as following line frequency degree of the recruiting resource of described BP correspondence.Adopt technical solution of the present invention, owing to reduced the MCS grade point of the CQI value or the CQI information correspondence of other subbands among the same BP, thereby make that the corresponding MCS grade point of the CQI value of current sub or CQI value is higher, thereby make follow-up when frequency degree of recruiting resource, the RBG that chooses the current sub correspondence on the very big probability is as following line frequency degree of recruiting resource, then its corresponding channel condition is better because current sub can report the CQI value, therefore, the RBG conduct of employing current sub correspondence line frequency degree of recruiting resource down can be guaranteed channel condition, improves downlink throughput capacity.
Below in conjunction with Figure of description technical solution of the present invention is described in detail.
Referring to Fig. 2, be one of method flow diagram of determining line frequency degree of recruiting resource down in the embodiment of the invention, this method comprises:
Determine the highest subband of CQI value in step 204, the subband of base station from described BP, and the RBG of the subband correspondence that the CQI value is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
Preferably, in the step 203 of above-mentioned flow process, reduce the CQI value of other subband correspondences, can be in the following ways: the CQI value that reduces other subband correspondences, comprise: the CQI value of described other subband correspondences is deducted one set the CQI value, described setting CQI value is a positive number and less than the minimum value in the CQI value of described other subband correspondences; Perhaps, with the CQI value of described other subband correspondences divided by one greater than 1 positive number; The embodiment of the invention is not limited in above-mentioned two kinds of modes that reduce subband CQI value, also can adopt other mode, enumerates no longer one by one at this.
Suppose positive number N, and the span of this N is " 0＜N＜15 ", in the above-mentioned steps 203, remove except the current sub, the CQI value of other subband correspondences among the described BP is all subtracted N calculating, concrete realization flow can be as shown in Figure 3, and this method flow has been realized the CQI value of each subband correspondence among the BP is handled, and comprising:
Step 301, base station receive the current sub CQI information of user terminal to send up.
The BP that described current sub belongs to is determined according to described current sub CQI information in step 302, base station.
The RBG of this BP correspondence is calculated in step 303, base station, and according to described current sub CQI information the CQI value of all RBG correspondences of described BP correspondence is upgraded.
Step 304, base station subtract the N computing to the CQI value of the subband of other except that current sub correspondence among the BP.
Step 305, all RBG of BP correspondence are put in the MCS group corresponding with this BP.
Step 306, process ends.
Referring to Fig. 4, be two of the method flow diagram of determining line frequency degree of recruiting resource down in the embodiment of the invention, this method comprises:
Determine the corresponding the highest subband of MCS grade point of CQI value in step 404, the subband of base station from described BP, and the RBG of the subband correspondence that the MCS grade point is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
Preferably, in the above-mentioned process step 403, reduce the corresponding MCS grade point of CQI value of described other subbands, can be in the following ways: the MCS grade point that the CQI value of described other subbands is corresponding deducts one and sets the MCS grade point, and described setting MCS grade point is a positive number and less than the minimum value in the MCS grade point of the CQI value correspondence of described other subbands; Perhaps, MCS grade point that the CQI value of described other subbands is corresponding respectively divided by one greater than 1 positive number.The embodiment of the invention is not limited in above-mentioned two kinds of modes that reduce the corresponding MCS grade point of subband CQI value, also can adopt other mode, enumerates no longer one by one at this.
Suppose positive number N, and the span of this N is " 0＜N＜15 ", in the above-mentioned steps 403, remove current sub, the MCS grade point that the CQI value of other subband correspondences among the described BP is corresponding all subtracts N and calculates, concrete realization flow can be as shown in Figure 5, and this method flow has been realized the corresponding MCS grade point of the CQI value of each subband among the BP is handled, and comprising:
The BP that described current sub belongs to is determined according to described current sub CQI information in step 502, base station, and the CQI value of all RBG of described BP correspondence is upgraded (corresponding RBG of next height band of ordinary circumstance according to described current sub CQI information, therefore, the CQI value of RBG correspondence is the pairing CQI value of corresponding subband).
The RBG of this BP correspondence is calculated in step 503, base station.
Based on the preceding method flow process, the embodiment of the invention also provides two kinds of different structures to fix the device of line frequency degree of recruiting resource really, respectively as shown in Figure 6 and Figure 7.
Referring to Fig. 6, be one of structural representation of determining the device of line frequency degree of recruiting resource down in the embodiment of the invention, this device comprises:
Receiving element 61 is used to receive the current sub CQI information of user terminal to send up, and determines the BP of described current sub correspondence according to described current sub CQI information.
CQI value updating block 62 is used for according to described current sub CQI information the CQI value of described BP being upgraded.
CQI value processing unit 63 is used for reducing the CQI value of other the subband correspondences of described BP except that described current sub.
Preferably, CQI value processing unit 63 reduces the CQI value of described other subband correspondences, specifically be used for: the CQI value of described other subband correspondences is deducted one set the CQI value, described setting CQI value is a positive number and less than the minimum value in the CQI value of described other subband correspondences; Perhaps, with the CQI value of described other subband correspondences divided by one greater than 1 positive number.
Referring to Fig. 7, be one of structural representation of determining the device of line frequency degree of recruiting resource down in the embodiment of the invention, this device comprises:
Receiving element 71 is used to receive the current sub CQI information of user terminal to send up, and determines the BP of described current sub correspondence according to described current sub CQI information.
CQI value updating block 72 is used for according to described current sub CQI information the CQI value of described BP being upgraded.
MCS grade point processing unit 73 is used for reducing the corresponding modulation coding mode MCS grade point of CQI value of other subbands of described BP except that described current sub;
Preferably, MCS grade point processing unit 73 reduces the corresponding MCS grade point of CQI value of described other subbands, specifically be used for: the MCS grade point that the CQI value of described other subbands is corresponding deducts one and sets the MCS grade point, and this settings MCS grade point is a positive number and less than the minimum value in the MCS grade point of the CQI value correspondence of described other subbands; Perhaps, MCS grade point that the CQI value of described other subbands is corresponding respectively divided by one greater than 1 positive number.
The embodiment of the invention also can provide a kind of base station, this base station can comprise as shown in Figure 6 device or device as shown in Figure 7.
Technical solution of the present invention is particularly useful for the determining of following line frequency degree of recruiting resource in PUCCH.
In the embodiment of the invention, the base station receives the current sub CQI information of user terminal to send up, and determines the BP of described current sub correspondence according to this current subband CQI information, and according to described current sub CQI information the CQI value of described BP is upgraded; Reduce the MCS grade point of the CQI value or the CQI Chinese character correspondence of other subbands except that current sub among the described BP again, from BP, choose following line frequency degree of the recruiting resource of the RBG of the highest subband correspondence of CQI value the highest grade of MCS or that the CQI value is corresponding at last as described BP correspondence; Adopt technical solution of the present invention, owing to reduced the MCS grade point of the CQI value or the CQI information correspondence of other subbands among the same BP, thereby make that the corresponding MCS grade point of the CQI value of current sub or CQI value is higher, thereby make follow-up when frequency degree of recruiting resource, the RBG that chooses the current sub correspondence on the very big probability is as following line frequency degree of recruiting resource, then its corresponding channel condition is better because current sub can report the CQI value, therefore, the RBG conduct of employing current sub correspondence line frequency degree of recruiting resource down can be guaranteed channel condition, improves downlink throughput capacity.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. determine the method for line frequency degree of recruiting resource down for one kind, it is characterized in that, comprising:
The base station receives the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
The base station is upgraded the CQI value of described BP according to described current sub CQI information;
The base station reduces the CQI value of other subband correspondences except that described current sub among the described BP;
Determine the highest subband of CQI value in the subband of base station from described BP, and the Resource Block group RBG of the subband correspondence that the CQI value is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
2. the method for claim 1, it is characterized in that, reduce the CQI value of other subband correspondences, comprising: the CQI value of described other subband correspondences is deducted one set the CQI value, described setting CQI value is a positive number and less than the minimum value in the CQI value of described other subband correspondences.
3. the method for claim 1 is characterized in that, reduces the CQI value of other subband correspondences, comprising: with the CQI value of described other subband correspondences divided by one greater than 1 positive number.
4. as each described method of claim 1～3, it is characterized in that, be applied to the determining of following line frequency degree of recruiting resource among the Physical Uplink Control Channel PUCCH.
5. determine the method for line frequency degree of recruiting resource down for one kind, it is characterized in that, comprising:
The base station receives the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
The base station is upgraded the CQI value of described BP according to described current sub CQI information;
The base station reduces the corresponding modulation coding mode MCS grade point of CQI value of other subbands except that described current sub among the described BP;
Determine the corresponding the highest subband of MCS grade point of CQI value in the subband of base station from described BP, and the Resource Block group RBG of the subband correspondence that the MCS grade point is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
6. method as claimed in claim 5, it is characterized in that, reduce the corresponding MCS grade point of CQI value of other subbands, comprise: the MCS grade point that the CQI value of described other subbands is corresponding deducts one and sets the MCS grade point, and described setting MCS grade point is a positive number and less than the minimum value in the MCS grade point of the CQI value correspondence of described other subbands.
7. method as claimed in claim 5 is characterized in that, reduces the corresponding MCS grade point of CQI value of other subbands, comprising: the MCS grade point of CQI value correspondence that will described other subbands respectively divided by one greater than 1 positive number.
8. as each described method of claim 5～7, it is characterized in that, be applied to the determining of following line frequency degree of recruiting resource among the Physical Uplink Control Channel PUCCH.
9. determine the device of line frequency degree of recruiting resource down for one kind, it is characterized in that, comprising:
Receiving element is used to receive the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
CQI value updating block is used for according to described current sub CQI information the CQI value of described BP being upgraded;
CQI value processing unit is used for reducing the CQI value of other the subband correspondences of described BP except that described current sub;
The resource determining unit is used for determining the highest subband of CQI value from the subband of described BP, and the Resource Block group RBG of the subband correspondence that the CQI value is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
10. device as claimed in claim 9 is characterized in that, described CQI value processing unit reduces the CQI value of other subband correspondences, specifically is used for:
The CQI value of described other subband correspondences is deducted one set the CQI value, described setting CQI value is a positive number and less than the minimum value in the CQI value of described other subband correspondences.
11. device as claimed in claim 9 is characterized in that, described CQI value processing unit reduces the CQI value of other subband correspondences, specifically is used for: with the CQI value of described other subband correspondences divided by one greater than 1 positive number.
12. determine the device of line frequency degree of recruiting resource down for one kind, it is characterized in that, comprising:
Receiving element is used to receive the current sub channel quality index CQI information of user terminal to send up, and determines the broadband frequency range BP of described current sub correspondence according to described current sub CQI information;
CQI value updating block is used for according to described current sub CQI information the CQI value of described BP being upgraded;
MCS grade point processing unit is used for reducing the corresponding modulation coding mode MCS grade point of CQI value of other subbands of described BP except that described current sub;
The resource determining unit determine the corresponding the highest subband of MCS grade point of CQI value in the subband from described BP, and the Resource Block group RBG of the subband correspondence that the MCS grade point is the highest is defined as following line frequency degree of the recruiting resource of described BP correspondence.
13. device as claimed in claim 12, it is characterized in that, MCS grade point processing unit reduces the corresponding MCS grade point of CQI value of other subbands, specifically be used for: the MCS grade point that the CQI value of described other subbands is corresponding deducts one and sets the MCS grade point, and this settings MCS grade point is a positive number and less than the minimum value in the MCS grade point of the CQI value correspondence of described other subbands.
14. device as claimed in claim 12, it is characterized in that, MCS grade point processing unit reduces the MCS grade point of the CQI value correspondence of other subbands of institute, specifically is used for: with the MCS grade point of the CQI value correspondence of described other subbands respectively divided by one greater than 1 positive number.
15. a base station is characterized in that, comprises as each described device of claim 9～11.
16. a base station is characterized in that, comprises as each described device of claim 12～14.
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| WO2015117449A1 (en) * | 2014-07-21 | 2015-08-13 | 深圳市中兴微电子技术有限公司 | Method for improving network performance, user equipment and storage medium |
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