CN101827383A - Method and base station for predicting time-frequency resources - Google Patents
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Abstract
The invention discloses a method and a base station for predicting time-frequency resources. The method includes the steps of: A, determining the number N of the time-frequency resources needed by a Cell-Edge User (CEU) in the next time period according to the load condition of the Cell-Edge User (CEU) in a sub-district; B, determining the application priority of all the time-frequency resources in the next time period by using at least one of the received load information of a neighboring sub-district and the interference of all the time-frequency resources of the sub-district; and C, according to the application priority order of all the time-frequency resources, selecting N time-frequency resources to be used as the time-frequency resource by the sub-district in the next time period. The method and the base station enable the resource occupation to be flexibly adjusted according to the actual network condition and thereby reach the purpose of coordinating the interference among the sub-districts.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of method and base station of predicting running time-frequency resource.
Background technology
In Long Term Evolution (LTE) system, in order to realize identical networking, introduced Inter-Cell Interference Coordination mechanism, improve marginal user performance.In order to support Inter-Cell Interference Coordination, need load information that interacting load information, base station receive that the base station sends under the adjacent sub-district between the base station after, avoid the resource of indicating in the working load information as far as possible, thereby reach the purpose of interference coordination.Load information mutual between the sub-district mainly comprises: the high interference indication (HII that is used to indicate next employed resource information of time period, HighInterference Indicator) information, and overload indication (OI, Overload Indicator) information of indicating each resource interference situation.
The base unit of running time-frequency resource is Physical Resource Block (PRB in the LTE system, PhysicalResource Block), usually the HII of the corresponding bit of each PRB represents that when HII is 1 next time period uses this PRB, represents that when HII is 0 next time period do not use this PRB.For example bandwidth of cell is 10M, comprises 50 PRB, if prediction will take PRB1, PRB3, PRB4, PRB5, PRB49 and PRB50, sends to the base station under the adjacent sub-district after then the HII of each PRB is set to as shown in Figure 1.In addition, the OI of corresponding two bits of each PRB represents that when OI is 00 the interference on this PRB is a low interference level, 01 expression moderate interference level, the high interference level of 10 expressions.
Only stipulated at present definition and the method for expressing of HII in the agreement, still do not had method how to determine HII, promptly do not existed and how to determine next time period uses the method for which running time-frequency resource.
Summary of the invention
In view of this, the invention provides a kind of method and base station of predicting running time-frequency resource, so that determine employed running time-frequency resource of next time period of this sub-district.
A kind of method of predicting running time-frequency resource, this method comprises:
A, utilize the load condition of this Cell Edge User, determine the running time-frequency resource number N that described edge customer of next time period need take;
B, utilize at least one in the disturbance regime of each running time-frequency resource of load information and this sub-district of the adjacent sub-district receive, determine the priority of utilizing of each running time-frequency resource in next time period;
C, according to the priority orders of utilizing of each running time-frequency resource, choose the running time-frequency resource that N running time-frequency resource uses as this sub-district of next time period.
A kind of base station, this base station comprises: number determining unit, priority determining unit and resource configuration unit;
Described number determining unit is used to utilize the load condition of this Cell Edge User, determines the running time-frequency resource number N that described edge customer of next time period need take;
Described priority determining unit is used for utilizing the load information of the adjacent sub-district that receives and this sub-district at least one of the disturbance regime of each running time-frequency resource, determines the priority of utilizing of each running time-frequency resource in next time period;
Described resource configuration unit is used for the order of utilizing priority according to described each running time-frequency resource, chooses the running time-frequency resource that N running time-frequency resource uses as this sub-district of next time period.
As can be seen from the above technical solutions, method provided by the invention and base station, utilize the load information of the load condition of this Cell Edge User and adjacent sub-district and/or this sub-district disturbance regime at each running time-frequency resource, according to the priority orders of utilizing of each running time-frequency resource, the running time-frequency resource of the number of this cell load situation requirement is satisfied in configuration; Thereby determine employed running time-frequency resource of next time period of this sub-district, make resource occupation to adjust neatly, thereby reach the purpose of Inter-Cell Interference Coordination according to the real network situation.
Description of drawings
Fig. 1 is the expression mode schematic diagram of HII information;
The method flow diagram that Fig. 2 provides for the embodiment of the invention;
The architecture of base station figure that Fig. 3 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Method provided by the present invention mainly comprises: utilize the load condition of this Cell Edge User, determine the running time-frequency resource number N that next time period edge customer need take; The load information of the adjacent sub-district that utilization receives and at least one in the disturbance regime of each running time-frequency resource of this sub-district are determined the priority of utilizing of each running time-frequency resource in next time period; According to the priority orders of utilizing of each running time-frequency resource, choose the running time-frequency resource that N running time-frequency resource uses as this sub-district of next time period.
Above-mentioned running time-frequency resource can be specially a PRB in the subframe, and in addition, this method can utilize the running time-frequency resource of configuration to determine HII information.
Lift a specific embodiment below said method is described, the method flow diagram that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, this method can may further comprise the steps:
Step 201: utilize the load condition of this Cell Edge User, determine that next time period edge customer need take the PRB number N of each subframe.
Load condition in this step can be the spectrum efficiency of edge customer and the situation of service rate.
The realization of this step can specifically may further comprise the steps:
The spectrum efficiency E of this Cell Edge User is determined in A, base station
fBe specially: the PRB number N that the base station can take average each subframe of this Cell Edge User
UsedAdd up, and the total actual transfer rate SBR of packet statistics edge customer by receiving, edge calculation user's spectrum efficiency E again
f, because spectrum efficiency is the transmission rate that unit resource is supported, therefore, E
f=SBR/N
Used
B, base station add up this Cell Edge User all service rates and
Wherein, n is the total professional number that edge customer is supported, R
kBe k professional service rate.
The PRB number N that next time period need take each subframe is calculated in C, base station:
Step 202: utilize the load information of other sub-district receive and this sub-district disturbance regime, determine the priority P of utilizing of each PRB in next time period at each PRB
m
The load information of other sub-district mainly is running time-frequency resource and the disturbance regime of these running time-frequency resources, i.e. HII information and the OI information that adjacent sub-district took in next time period.
Because all there is adjacent sub-district in each sub-district, therefore, the load information of one or more adjacent sub-districts may be received in the base station, utilizes the HII information of the OI information of this sub-district and adjacent sub-district and OI information to determine the priority P of utilizing of each PRB in next time period
m
Wherein, m PRB's utilizes priority P
mCan utilize following formula to try to achieve:
Wherein, S
1mFor adjacent sub-district next time period to subframe in the situation that takies of m PRB, can specifically get n
HIIValue, n
HIIFor next time period takies the adjacent number of cells of this PRB, for example, n is arranged according to the load information that receives
HIIThe HII of individual this PRB of sub-district is set to 1, and just there is n in explanation
HIIIndividual sub-district takies this PRB in next time period.
S
2mBe the disturbance regime of adjacent sub-district on m PRB, can specifically get
Value, l is the level of interference of this PRB, its value can be 0,1 and 2, respectively corresponding low interference level, moderate interference level and high interference levels, 00,01 and 10 of promptly corresponding OI value.n
lFor the level of interference of this PRB is the adjacent number of cells of l, the OI that promptly receives is designated as the number of l.
S
3mBe the disturbance regime of this sub-district on m PRB, can specifically get k
sValue, k
sBe the level of interference of this sub-district on this PRB, value is 0,1 or 2.
A
1, A
2Or A
3Value can utilize emulation testing to choose suitable value according to the actual requirements.
Step 203: according to the priority orders of utilizing of each PRB, be configured to the PRB that use this sub-district of next time period, and the HII of these PRB correspondences is designated 1 sends to adjacent sub-district according to utilizing priority to choose N PRB from high to low.
Suppose that the PRB number N that definite next time period of this sub-district need take each subframe in the step 201 is 5, in the priority orders of determining in the step 202, coming preceding 5 from high to low is PRB1, PRB3, PRB4, PRB5, PRB49 and PRB50, the running time-frequency resource that the PRB1 in each subframe, PRB3, PRB4, PRB5, PRB49 and PRB50 can be taken as this sub-district of next time period then, and the HII of PRB1, PRB3, PRB4, PRB5, PRB49 and PRB50 is designated 1.
More than be the description that method provided by the present invention is carried out, below base station provided by the present invention be described in detail.As shown in Figure 3, this base station can comprise: number determining unit 300, priority determining unit 310 and resource configuration unit 320.
Wherein, above-mentioned number determining unit 300 specifically comprises: efficient determines that subelement 301, speed determines that subelement 302 and number determine subelement 303.
Efficient is determined subelement 301, is used for determining the spectrum efficiency E of this Cell Edge User
f
Speed is determined subelement 302, be used to add up this Cell Edge User all service rates and
Wherein n is the total professional number that edge customer is supported, R
kBe k professional service rate.
Number is determined subelement 303, is used for according to formula
The edge device that calculates next this sub-district of time period need take the PRB number N of each subframe.
Particularly, efficient is determined the PRB number N that subelement 301 can take average each subframe of this Cell Edge User
UsedAdd up, and the total actual transfer rate SBR of packet statistics edge customer by receiving; According to E
f=SBR/N
UsedCalculate the spectrum efficiency E of this Cell Edge User
f
In addition, above-mentioned priority determining unit 310 can specifically comprise: subelement 311 is obtained in load and priority is determined subelement 212.
Priority is determined subelement 312, be used for according to
Determine the priority P of utilizing of m PRB
m, wherein, S
3mBe the disturbance regime of this sub-district on this m PRB, A
1, A
2Or A
3Be default parameter value.
Wherein, S
1mValue can take the adjacent number of cells of this m PRB for next time period; S
2mValue can for
Wherein, l is the level of interference number of this m PRB, n
lFor the level of interference of this m PRB is the adjacent number of cells of l; S
3mValue can be the level of interference number of this sub-district at this m PRB.
Further, this base station can also comprise: high interference indicating member 330, the HII that is used for N PRB correspondence choosing according to resource configuration unit is designated 1 and sends to adjacent sub-district.
By above description as can be seen, method provided by the invention and base station, utilize the load information of the load condition of this Cell Edge User and adjacent sub-district and/or this sub-district disturbance regime at each running time-frequency resource, according to the priority orders of utilizing of each running time-frequency resource, the running time-frequency resource of the number of this cell load situation requirement is satisfied in configuration; Thereby determine employed running time-frequency resource of next time period of this sub-district, make resource occupation to adjust neatly, thereby reach the purpose of Inter-Cell Interference Coordination according to the real network situation.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (11)
1. a method of predicting running time-frequency resource is characterized in that, this method comprises:
A, utilize the load condition of this Cell Edge User, determine the running time-frequency resource number N that described edge customer of next time period need take;
B, utilize at least one in the disturbance regime of each running time-frequency resource of load information and this sub-district of the adjacent sub-district receive, determine the priority of utilizing of each running time-frequency resource in next time period;
C, according to the priority orders of utilizing of each running time-frequency resource, choose the running time-frequency resource that N running time-frequency resource uses as this sub-district of next time period.
2. method according to claim 1 is characterized in that, described running time-frequency resource is the Physical Resource Block PRB in each subframe.
3. method according to claim 2 is characterized in that, described steps A specifically comprises:
A1, determine the spectrum efficiency E of this Cell Edge User
f
A2, add up this Cell Edge User all service rates and
Wherein n is the total professional number that edge customer is supported, R
kBe k professional service rate;
A3, according to formula
The edge customer that calculates next this sub-district of time period need take the PRB number N of each subframe.
4. method according to claim 3 is characterized in that, described steps A 1 specifically comprises:
The PRB number N that average each subframe of this Cell Edge User is taken
UsedAdd up, and add up the total actual transfer rate SBR of described edge customer by the packet that receives; According to E
f=SBR/N
UsedCalculate the spectrum efficiency E of this Cell Edge User
f
5. according to the described method of the arbitrary claim of claim 2 to 4, it is characterized in that described step B specifically comprises:
B1, from the load information of the adjacent sub-district that receives, obtain adjacent sub-district next time period to subframe in the situation that the takies S of m PRB
1mAnd the disturbance regime S of adjacent sub-district on this m PRB
2m
B2, according to
Determine the priority P of utilizing of m PRB
m, wherein, S
3mBe the disturbance regime of this sub-district on this m PRB, A
1, A
2Or A
3Be default parameter value.
6. method according to claim 5 is characterized in that, described S
1mValue take the adjacent number of cells of this m PRB for next time period;
Described S
2mValue be
Wherein, l is the level of interference number of this m PRB, n
lFor the level of interference of this m PRB is the adjacent number of cells of l;
Described S
3mValue be the level of interference number of this sub-district at this m PRB.
7. method according to claim 2 is characterized in that, this method also comprises: the high interference indication HII of N the PRB correspondence that described step C is chosen is designated 1 and sends to adjacent sub-district.
8. a base station is characterized in that, this base station comprises: number determining unit, priority determining unit and resource configuration unit;
Described number determining unit is used to utilize the load condition of this Cell Edge User, determines the running time-frequency resource number N that described edge customer of next time period need take;
Described priority determining unit is used for utilizing the load information of the adjacent sub-district that receives and this sub-district at least one of the disturbance regime of each running time-frequency resource, determines the priority of utilizing of each running time-frequency resource in next time period;
Described resource configuration unit is used for the order of utilizing priority according to described each running time-frequency resource, chooses the running time-frequency resource that N running time-frequency resource uses as this sub-district of next time period.
9. base station according to claim 8 is characterized in that, described number determining unit specifically comprises: efficient determines that subelement, speed determines that subelement and number determine subelement;
Described efficient is determined subelement, is used for determining the spectrum efficiency E of this Cell Edge User
f
Described speed is determined subelement, be used to add up this Cell Edge User all service rates and
Wherein n is the total professional number that edge customer is supported, R
kBe k professional service rate;
Described number is determined subelement, is used for according to formula
The edge device that calculates next this sub-district of time period need take the PRB number N of each subframe.
10. base station according to claim 9 is characterized in that, described efficient is determined the PRB number N that subelement takies average each subframe of this Cell Edge User
UsedAdd up, and add up the total actual transfer rate SBR of described edge customer by the packet that receives; According to E
f=SBR/N
UsedCalculate the spectrum efficiency E of this Cell Edge User
f
11. to the described base station of 10 arbitrary claims, it is characterized in that described priority determining unit comprises: subelement is obtained in load and priority is determined subelement according to Claim 8;
Subelement is obtained in described load, be used for from the load information of the adjacent sub-district that receives obtain adjacent sub-district next time period to subframe the situation that the takies S of m PRB
1mAnd the disturbance regime S of adjacent sub-district on this m PRB
2m
Described priority is determined subelement, be used for according to
Determine the priority P of utilizing of m PRB
m, wherein, S
3mBe the disturbance regime of this sub-district on this m PRB, A
1, A
2Or A
3Be default parameter value.
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| CN109195176B (en) * | 2018-11-16 | 2021-06-15 | 徐州工业职业技术学院 | Self-adaptive scheduling method and system for multi-service fusion in home base station |
| CN110933758A (en) * | 2019-11-28 | 2020-03-27 | 中国联合网络通信集团有限公司 | Interference coordination method and device, and base station |
| CN110933758B (en) * | 2019-11-28 | 2022-12-23 | 中国联合网络通信集团有限公司 | Interference coordination method and device, and base station |
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