CN101848532A

CN101848532A - Reference signal received power threshold adjusting method and equipment

Info

Publication number: CN101848532A
Application number: CN200910080163A
Authority: CN
Inventors: 朱志球; 赵瑾波; 秦飞; 寇会如
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2009-03-24
Filing date: 2009-03-24
Publication date: 2010-09-29
Anticipated expiration: 2029-03-24
Also published as: CN101848532B

Abstract

The invention discloses a reference signal received power threshold adjusting method and equipment; the method comprises the following steps that: the proportion of users on the edge of a community and the spectrum efficiency of all user equipment of the community are determined; and the reference signal received power threshold is adjusted according to the proportion of the users on the edge and the spectrum efficiency of the user equipment of the community. The invention can enable an interference coordination technology among communities to play a better role, improves the throughput, the spectrum efficiency, QoS and other properties of the users on the edge, further ensures the overall performance of a system, and reduces nonideal community throughput, spectrum efficiency property and other phenomena brought by incorrect resource use restriction caused by the inappropriate setting of the reference signal received power threshold.

Description

A kind of method of adjustment of reference signal received power threshold and equipment

Technical field

The present invention relates to wireless communication technology, particularly a kind of method of adjustment of reference signal received power threshold and equipment.

Background technology

At LTE (Long Term Evolution, Long Term Evolution) in the system, by ICIC (Inter-CellInterference Coordination, Inter-Cell Interference Coordination) technology reduces the co-channel interference between the neighbor cell, guarantee QoS (the Quality of Service of edge customer, service quality), the purpose of having introduced the ICIC technology is in order to reduce performances such as the co-channel interference between the neighbor cell, the throughput that improves Cell Edge User and user satisfaction.

The ICIC technology that LTE supports comprises static interference coordination and semi-static interference coordination two big classes, wherein coordinating semi-static interference need be by realizing at the mutual load information separately of X2 interface, Fig. 1 is the coordinating semi-static interference schematic diagram, its basic principle as shown in Figure 1, be roughly: the process result that measurement reports to UE is to CCU (Cell Center User, Cell Center User) and CEU (Cell Edge User, Cell Edge User) distinguish, obtain the category attribution information of UE; Edge customer data transfer request according to this sub-district, and each PRB that measures (Physical Resource Block, Physical Resource Block) interference level on produces HII (the High Interference Indicator of this sub-district, the high interference indication), OI (Overload Indicator, the overload indication), RNTP (Relative Narrowband TX Powerindicator, Relative Narrowband TX Power indication) even load information; Through load information transmitting-receiving administration module the load information that this sub-district produces is informed neighbor cell through X2 interface (inter-base station interface), simultaneously the load information that produces through the X2 interface reception of neighboring cell; Handle through the load information processing module with the load information of this sub-district generation with from the load information that neighbor cell receives at last, and the result that will handle exports to the scheduler module of base station; Wherein, by the mutual HII in X2 interface and sub-district, OI, parameter that RNTP even load information is relevant.The basic thought of ICIC is to guarantee that by the planning or the method for load information interaction in advance the neighbor cell edge customer avoids using simultaneously resource on the same sub-band as far as possible, to avoid the co-channel interference between the sub-district.Therefore, in the ICIC technology, need at first to determine that the UE (User Equipment, subscriber equipment) of scheduling in the sub-district is CCU or CEU, and adopt different resource allocation policies according to CCU/CEU information.As seen the CCU/CEU differentiation is the basic premise of ICIC technology.

RSRP (Reference Signal Receive Power is adopted in the LTE standard code, Reference Signal Received Power) reports the measuring amount of distinguishing as CCU/CEU, specific practice compares for RSRP and the pre-set threshold with UE, comes thus to determine that this UE is CCU or CEU.As seen, the setting of RSRP threshold value directly influences the ratio of CCU/CEU in the sub-district, if this parameter is provided with improperly, will directly influence the effect of ICIC, and then the performance index of cell edge usefulness even whole system are brought harmful effect.

LTE standard code ICIC reuses on the RSRP of A3 incident of switching and offers definite center of housing estate/edge customer, and its specific practice is as follows:

Entry condition: if RSRP _N-RSRP _S＞TH _Offset+ TH _Hysteresis=TH1 _RSRP, think that then this UE enters cell edge;

Leave condition: if RSRP _N-RSRP _S＜TH _Offset-TH _Hysteresis=TH2 _RSRP, then this UE leaves cell edge.

Wherein, RSRP _NBe the adjacent cell reference signals received power that UE measures, RSRP _SBe this cell reference signals received power that UE measures, TH _OffsetsBe skew thresholding, TH _HysteresisBe hysteresis threshold, TH1 _RSRP, TH2 _RSRPBe the RSRP threshold value.Be pointed out that because the adjacent number of cells that sub-district exists usually is greater than 1, the above-mentioned condition of leaving can only explain this UE and leaves and RSRP _NThe corresponding district edge; All satisfy when leaving condition when all adjacent areas, can think that just this UE enters into center of housing estate from cell edge.

After the base station receives the RSRP measurement report, measurement ID (IDentifier according to this measurement report correspondence, sign) judges that this measurement report is at switching the purpose measurement report or at the measurement report of ICIC, the two is distinguished by the reportOnLeave territory in the measurement report; If the reportOnLeave territory of A3 incident is set to TRUE, illustrate that then this RSRP measurement report is at ICIC.When UE measures the incident that satisfies entry condition, trigger reporting after after a while, in the list of thing that reports, add corresponding clauses and subclauses; The condition of leaving is satisfied in the adjacent area that measures the clauses and subclauses correspondence of list of thing as UE, triggers reporting through back after a while, deletes corresponding clauses and subclauses in the list of thing that reports; If list of thing illustrates then that for empty this UE enters center of housing estate in the RSRP measurement report that certain UE reports.

The basic ideas of distinguishing by above CCU/CEU as can be seen, the RSRP threshold value is fine or not directly related for the ICIC performance.The improper of RSRP threshold value setting will directly cause a series of problem: if threshold value TH1 _RSRPBe provided with low or threshold value TH2 _RSRPBe provided with too highly, then edge customer is a lot, and the probability that bumps when carrying out resource allocation is very big, and performances such as edge customer throughput, QoS can not get guaranteeing; If TH1 _RSRPBe provided with too highly or threshold value TH2 _RSRPBe provided with lowly excessively, then a large amount of UE are judged as CCU, and system's inward flange user ratio is low excessively, do not reach the purpose of ICIC, and the co-channel interference of system will be very big, and performance index such as entire throughput will can not get guaranteeing.

As the above analysis, the deficiencies in the prior art are: when the RSRP threshold value is provided with when improper, then it will inevitably cause the ICIC technology well not play a role, make that performances such as edge customer throughput, QoS can not get guaranteeing that performances such as the entire throughput of system, user satisfaction also will be affected.Particularly when information such as each Zone load, user location distribution change, owing to can not adapt to the actual scene of current area in time by the threshold value of adjusting RSRP, can not give full play to the performance of ICIC, thereby edge customer and entire system performance can not get guaranteeing.

Summary of the invention

The invention provides a kind of method of adjustment of reference signal received power threshold, in order to solve the problem that the RSRP threshold value that exists in the prior art can not in time adapt to ICIC technology utilization needs.

A kind of method of adjustment of reference signal received power threshold is provided in the embodiment of the invention, has comprised the steps:

Determine the spectrum efficiency of Cell Edge User ratio and each UE of sub-district;

Spectrum efficiency according to edge customer ratio and each UE of sub-district is adjusted the RSRP threshold value.

Preferably, described spectrum efficiency according to edge customer ratio and each UE of sub-district is adjusted the RSRP threshold value, comprising:

When the edge customer ratio is lower than first threshold value, and the spectrum efficiency of each UE of sub-district reduces entering the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in raising when being lower than second threshold value;

When the edge customer ratio is higher than the 3rd threshold value, and the spectrum efficiency of each UE of sub-district is when being higher than the 4th threshold value, improves to enter the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in reduction;

Described first threshold value, second threshold value, the 3rd threshold value, the 4th threshold value are provided with according to the network practice, and first threshold value is less than the 3rd threshold value, and second threshold value is less than the 4th threshold value.

Preferably, when adjusting the RSRP threshold value, further comprise according to the spectrum efficiency of edge customer ratio and each UE of sub-district:

Number and/or Zone information on load in conjunction with UE in the sub-district are adjusted.

Adjust according to one of following information or its combination:

The spectrum efficiency of the spectrum efficiency of each UE of the traffic load information of neighbor cell, the edge customer ratio of neighbor cell, neighbor cell, the edge customer ratio of neighbor cell and threshold value, neighbor cell and threshold value result relatively.

Preferably, further comprise:

Cycle some time is set;

Determine the spectrum efficiency of interior Cell Edge User ratio of each time cycle and each UE of sub-district;

In each time cycle, determine according to the spectrum efficiency of edge customer ratio and each UE of sub-district whether needs are adjusted the RSRP threshold value in this time cycle;

When the time cycle of needs adjustment RSRP threshold value occurs continuously, adjust the RSRP threshold value.

Preferably, described Cell Edge User ratio is:

The UE number of the edge customer state that is in that occurred in the sub-district and the current UE number sum that is in the edge customer state are with UE number that occurred in the sub-district and the current ratio that is in the UE number sum in the sub-district;

And/or,

The UE that occurred in the sub-district is in total duration of edge customer state and total duration sum that the UE in the current area is in the edge customer state, is in the ratio that total duration in the sub-district and the UE in the current area are in the total duration sum in the sub-district with the UE that occurred in the sub-district.

Preferably, when determining the spectrum efficiency of described each UE of sub-district, use the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

Preferably, when determining the spectrum efficiency of described each UE of sub-district, further comprise: after the spectrum efficiency of determining each UE of sub-district, CDF (Cumulative Distribution Function, the cumulative distribution function) distribution curve that sorts and add up and obtain each UE spectrum efficiency Distribution Statistics in the sub-district according to from big to small order;

The spectrum efficiency that is identified for adjusting each UE of sub-district of RSRP is the spectrum efficiency at X% place the poorest in the described CDF distribution curve.

A kind of Adjustment System of reference signal received power threshold is provided in the embodiment of the invention, has comprised:

User's ratio determination module is used for determining the Cell Edge User ratio;

The spectrum efficiency determination module is used for determining the spectrum efficiency of each UE of sub-district;

The threshold value adjusting module is used for adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

Preferably, described threshold value adjusting module is further used for being lower than first threshold value when the edge customer ratio, and when the spectrum efficiency of each UE of sub-district is lower than second threshold value, reduce entering the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in raising; When the edge customer ratio is higher than the 3rd threshold value, and the spectrum efficiency of each UE of sub-district is when being higher than the 4th threshold value, improves to enter the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in reduction; Described first threshold value, second threshold value, the 3rd threshold value, the 4th threshold value are provided with according to the network practice, and first threshold value is less than the 3rd threshold value, and second threshold value is less than the 4th threshold value.

Preferably, described threshold value adjusting module is further used for adjusting in conjunction with number and/or the Zone information on load of UE in the sub-district when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

Preferably, further comprise:

The information of adjacent cells acquisition module is used to obtain one of following information or its combination: the spectrum efficiency of the spectrum efficiency of each UE of the traffic load information of neighbor cell, the edge customer ratio of neighbor cell, neighbor cell, the edge customer ratio of neighbor cell and threshold value, neighbor cell and threshold value result relatively;

Described threshold value adjusting module is further used for adjusting according to the information that described information of adjacent cells acquisition module obtains when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

Preferably, further comprise:

Cycle is provided with module, is used to be provided with cycle some time;

Described user's ratio determination module is further used for determining Cell Edge User ratio in each time cycle;

Described spectrum efficiency determination module is further used for determining the spectrum efficiency of each UE of sub-district in each time cycle;

Described threshold value adjusting module was further used in each time cycle, determine according to the spectrum efficiency of edge customer ratio and each UE of sub-district whether needs are adjusted the RSRP threshold value in this time cycle, when the time cycle of needs adjustment RSRP threshold value occurs continuously, adjust the RSRP threshold value.

Preferably, described user's ratio determination module comprises first determining unit and/or second determining unit, wherein:

First determining unit, be used for determining that the Cell Edge User ratio is: the UE number of the edge customer state that is in that the sub-district occurred and the current UE number sum that is in the edge customer state, with UE number that occurred in the sub-district and the current ratio that is in the UE number sum in the sub-district;

Second determining unit, being used for the Cell Edge User ratio is: the UE that the sub-district occurred is in total duration of edge customer state and total duration sum that the UE in the current area is in the edge customer state, is in the ratio that total duration in the sub-district and the UE in the current area are in the total duration sum in the sub-district with the UE that occurred in the sub-district.

Preferably, described spectrum efficiency determination module is further used for when determining the spectrum efficiency of described each UE of sub-district, uses the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

Preferably, described spectrum efficiency determination module is further used for after determining the spectrum efficiency of each UE of sub-district, and sorting and add up according to from big to small order obtains the CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district; And the spectrum efficiency that is identified for adjusting each UE of sub-district of RSRP is the spectrum efficiency at X% place the poorest in the described CDF distribution curve.

A kind of wireless access network equipment is provided in the embodiment of the invention, has comprised:

Sending module is used to send RSRP threshold value adjustment information, and described information comprises the spectrum efficiency of edge customer ratio and each UE of sub-district.

Preferably, further comprise:

The threshold value adjusting module is used for according to the RSRP threshold value adjustment decision-making that receives the RSRP threshold value being adjusted.

A kind of operation and maintenance system is provided in the embodiment of the invention, has comprised:

Receiver module is used to receive RSRP threshold value adjustment information, and described information comprises the spectrum efficiency of edge customer ratio and each UE of sub-district;

Threshold value is adjusted decision-making module, is used for determining according to the spectrum efficiency of edge customer ratio and each UE of sub-district the adjustment decision-making of RSRP threshold value;

Feedback module, the adjustment decision-making that is used to feed back described RSRP threshold value.

Preferably, receiver module is used to receive the RSRP threshold value adjustment information of each sub-district, and described information comprises the edge customer ratio of each sub-district and the spectrum efficiency of each UE of this sub-district;

Threshold value is adjusted decision-making module, is used for determining according to the spectrum efficiency of the edge customer ratio of each sub-district and each UE of this sub-district the adjustment decision-making of the RSRP threshold value of each sub-district;

Feedback module is used for the extremely corresponding sub-district of the adjustment decision feedback of each sub-district RSRP threshold value.

A kind of operation and maintenance system also is provided in the embodiment of the invention, has comprised:

Receiver module, be used to receive the RSRP threshold value adjustment decision-making of each sub-district, described RSRP threshold value adjustment decision-making is that the affiliated wireless access network equipment in each sub-district is according to the edge customer ratio of this sub-district and the definite RSRP threshold value adjustment decision-making of spectrum efficiency of each UE of this sub-district;

Threshold value is adjusted decision-making module, is used for determining the 2nd RSRP threshold value adjustment decision-making that each sub-district is final in conjunction with the RSRP threshold value adjustment decision-making of each sub-district;

Feedback module is used for the 2nd RSRP threshold value of each sub-district is adjusted decision feedback to corresponding sub-district.

Beneficial effect of the present invention is as follows:

Because in the invention process process, be to come the RSRP threshold value is adjusted dynamically according to edge customer ratio and each user's spectrum efficiency distributed intelligence of sub-district, the actual scene that therefore can adapt to current area in time by the threshold value of adjusting RSRP, thereby brought into play the performance of ICIC fully, guaranteed the performance of edge customer and entire system.

Further, in order more reliably and accurately to realize the self-optimizing of RSRP threshold value, can also carry out RSRP threshold value self-optimizing adjustment decision-making in conjunction with sub-district UE number, this sub-district and neighbor cell traffic load in the timing statistics, make adjusted RSRP threshold value can adapt to the actual scene needs of current area more.

Description of drawings

Fig. 1 is a coordinating semi-static interference schematic diagram in the background technology;

Fig. 2 is the method for adjustment implementing procedure schematic diagram of reference signal received power threshold in the embodiment of the invention;

Fig. 3 is the Adjustment System structural representation of reference signal received power threshold in the embodiment of the invention;

Fig. 4 is wireless access network equipment embodiment one structural representation in the embodiment of the invention;

Fig. 5 is wireless access network equipment embodiment two structural representations in the embodiment of the invention;

Fig. 6 is operation and maintenance system embodiment one structural representation in the embodiment of the invention;

Fig. 7 is operation and maintenance system embodiment two structural representations in the embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.

The inventor notices in the invention process: because the position distribution of traffic load, UE etc. is dynamic change in the system, therefore the RSRP threshold value also should adjust in time according to its variation, just can better bring into play the effect of ICIC technology, guarantee the performance such as throughput, QoS of edge customer and the performance index of whole sub-district.

And in LTE and LTE+, can reduce the artificial participation of the network planning and Operation and Maintenance by the mechanism of introducing network self-organization, reduce the construction and the operation cost of network.Network self-organization is promptly by network based statistic Automatic Optimal parameter.

Therefore, network self-organization solution at the RSRP threshold value of ICIC technology will be proposed in the embodiment of the invention.

Fig. 2 is the method for adjustment implementing procedure schematic diagram of reference signal received power threshold, as shown in the figure, when the RSRP threshold value is adjusted, can comprise the steps:

Step 201, determine the Cell Edge User ratio;

Step 202, determine the spectrum efficiency of each UE of sub-district;

Step 203, adjust the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

Above-mentioned steps 201 and step 202 there is no the priority sequential relationship in the execution, and two amounts all need to use when the RSRP threshold value is adjusted, and shown in the figure only is a kind of execution mode.

For ease of setting forth the specific embodiment of the present invention, will be that subject of implementation describes in the enforcement with the base station.But along with deepening continuously to the execution mode explanation, those skilled in the art easily know, in wireless access network equipment, include and to get access to the Cell Edge User ratio, and the functional entity of the spectrum efficiency parameter value of each UE of sub-district, and can calculate, the equipment of functions such as data processing such as judgement can be as subject of implementation, as base station or base station and O﹠amp; M (Operations﹠amp; Maintenance, operation and maintenance) system that forms of equipment.

Obviously, when adjusting the RSRP threshold value, both can not be in the scope of endless, also can not in unlimited short scope, implement, always need in the enforcement to determine in a period of time, to implement technical scheme of the present invention in conjunction with actual, therefore, set two kinds of time periods using always in the practice among the embodiment, that is, timer T is set in the base station or T1 adjusts the ground cycle as the RSRP threshold value, the T value is bigger value, as: a week; The value of T1 can be smaller a little, as: two days.

In step 201, statistics is in the ratio of this section this Cell Edge User in the time.

In the enforcement, adopted dual mode to determine the ratio of Cell Edge User, first kind is that the angle that satisfies the UE number of edge customer condition from the base station is determined ratio, second kind then is that the angle that satisfies the UE time of edge customer condition from the base station is determined ratio, obviously, other can determine have how many UE to be in the edge customer state in a sub-district in a certain period, and account for what mode of total amount and all can be used to implement.Describing with example below, is that example describes with T1 in the enforcement, and when obviously being set to T, execution mode is the same; In addition, adopted counter among the embodiment, this considers that this equipment selects for use in the ease for use of the numerical value that is used to calculate the accumulative total stack, can certainly replace with other function components and parts.

The UE number of the edge customer state that is in that 1, occurred in the sub-district and the current UE number sum that is in the edge customer state are with UE number that occurred in the sub-district and the current ratio that is in the UE number sum in the sub-district.

1), central user counter count1 and edge customer counter count2 are set when T1 starts simultaneously, its initial value is set is 0.

2), if UE has been present in the sub-district before T1 starts, then according to CCU/CEU information summary counter count1 or count2 before.

If certain UE inserts this sub-district after T1 starts, then can carry out:, and when initialization, be judged as CCU if certain UE is admitted in T1 according to following mode, then count1 adds up in the base station, if certain UE is admitted in T1, and is being initialized as CEU, count2 then adds up; Wherein, the initialization decision criteria before the first time, RSRP reported can carry out according to following rule: if switch the user, then be judged as edge customer; If non-switching user then is judged as central user.So traversal T1 time memory is each UE of sub-district.

3), in the time of T1 effect, if the CCU/CEU state of certain UE changes, as becoming edge customer by central user, summary counter count2 then; If become central user by edge customer, summary counter count1 then.

4), overtime as timer T1, obtain the value of summary counter count1 and count2, count2/ (count1+count2) is the edge customer ratio.

2, the UE that occurred in the sub-district is in total duration of edge customer state and total duration sum that the UE in the current area is in the edge customer state, is in the ratio that total duration in the sub-district and the UE in the current area are in the total duration sum in the sub-district with the UE that occurred in the sub-district.

1), in the time range of T1 effect initial center/rim condition of UE in each sub-district of statistics, can adopt with scheme 1 in 2) method carry out initialization.If certain UEi has been judged as CCU at the beginning of T1 starts, then start the central user timer TC1i of this UE, it is 0 that the TC2i initial value is set simultaneously, if UEi has been judged as CEU at the beginning of T1 starts, then start the central user timer TC2i of this UE, it is 0 that the TC1i initial value is set simultaneously;

If UEj is for inserting the sub-district and be initialized to CCU after the T1 timer starting, then start timer TC1j, it is 0 that the TC2j initial value is set simultaneously, if UEj is for inserting the sub-district and be initialized to CEU after the T1 timer starting, then start timer TC2j, it is 0 that the TC1j initial value is set simultaneously.

2), in the time of T1 effect, if the CCU/CEU state of certain UE changes, then handle in such a way:

If the state of UEi changes CEU into by CCU, then time-out clock TC1i starts timer TC2i, and wherein TC2i is that the basis is carried out timing and added up with before state, might not add up since 0;

If the state of UEi changes CEU into by CCU, then time-out clock TC2i starts timer TC1i, and wherein TC1i carries out timing and adds up on the basis of before state, might not be since 0.

Not necessarily since 0 add up be because present embodiment statistics be total duration that each UE is in each state, when it switches, need to add up the total duration under each state respectively between two states.

3), if certain UEi is owing to switching or reason such as conversation end disconnects service with this sub-district before timer T1 is overtime, then time out accumulator TC1i and TC2i immediately after the service that disconnects with this sub-district;

4), if the T1 timer expiry, then suspend all UE sub-district in timing accumulator TC1i and TC2i, and establish once there was UE in inherence, sub-district T1 in action time the N that adds up to, then can determine the edge customer ratio according to following formula:

R_{edge} = \frac{Σ_{i = 1}^{N} {TC 2}_{i}}{Σ_{i = 1}^{N} {TC 1}_{i} + Σ_{i = 1}^{N} {TC 2}_{i}} .

In step 202, statistics obtains the spectrum efficiency distributed intelligence of each UE of sub-district in the spectrum efficiency of this section each UE in the time.

When determining the spectrum efficiency of each UE of sub-district, can use the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

The spectrum efficiency of calculating all UE in timer T1, spectrum efficiency is defined as under unit bandwidth, the bit number that is transmitted in unit interval, its unit is bit/s/Hz, for the LTE system, the UE spectrum efficiency can go up the average bit number that carries with each PRB that distributes to this UE in the unit (physical resource block, Physical Resource Block) and determine.So can be by adding up UE in scheduling times and the bit number of each dispatching office biography and the spectrum efficiency that each number of dispatching use PRB is determined UE of T1 in action time.

When determining the spectrum efficiency of described each UE of sub-district, further comprise: after the spectrum efficiency of determining each UE of sub-district, sorting and add up according to from big to small order obtains the CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district; That is, after obtaining the spectrum efficiency of UE, sorting and add up according to from big to small order just to obtain the CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district.

Just can determine the spectrum efficiency of Cell Edge User ratio and each UE of sub-district by the way, the embodiment that step 203 is adjusted the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district describes below, in the enforcement, after the RSRP that the RSRP threshold value of adjusting is meant the user reports, itself and a threshold value are compared, be used for judging that this user is central user or edge customer, this threshold value is exactly the RSRP threshold value of indication among the embodiment.

Selected two parameters of spectrum efficiency of edge customer ratio and UE to adjust the threshold value of RSRP in the enforcement, this is because the inventor notices in the invention process: the important purpose of ICIC is exactly in order to improve the performance of Cell Edge User, and the spectrum efficiency of UE can directly reflect the transmission performance of this UE in the sub-district; The edge customer ratio then is to be obtained by the CCU/CEU discriminating module of ICIC, and it has characterized the assurance that the edge customer what have judged by the ICIC module in the sub-district can come obtained performance by ICIC.

On the other hand, because the problem that the embodiment of the invention will solve is by rational setting and adjusts the RSRP threshold value and give full play to the effect that ICIC improves community marginal user performance, and the edge customer ratio is directly reflecting have how many users improving performance by ICIC in the sub-district, the spectrum efficiency of the UE transmission performance directly reflecting each UE (i.e. the degree of the performance improvement by Cell Edge User after the effect of ICIC) that distributes in the sub-district, it is very directly perceived therefore to adjust the RSRP threshold value with these two parameters.

Below concrete enforcement is described.

When adjusting the RSRP threshold value, can comprise according to the spectrum efficiency of edge customer ratio and each UE of sub-district:

According to the network practice the first threshold T H1 is set _{CEU_ratio}, the second threshold T H1 _SE, the 3rd threshold T H2 _{CEU_ratio}, the 4th threshold T H2 _SE, and first threshold value is less than the 3rd threshold value, and second threshold value is less than the 4th threshold value; At definite TH1 _{CEU_ratio}With TH2 _{CEU_ratio}, TH1 _SEWith TH2 _SEDuring four threshold values, be that the practice according to network is provided with, concrete, can determine by emulation, also can determine according to the experience of network planning network optimization, can also dispose according to the requirement of operator.For example: the thresholding TH1 of spectrum efficiency _SEWith TH2 _SEValue can determine according to the practical application scene guarantee that the transmission rate of edge customer should reach can which type of value as: operator, as 64k bit/s, obtain the requirement of a spectrum efficiency again according to this rate requirement.

Certainly, more than several possible modes of determining these parameters only have been described, but be not limited only to these modes, those skilled in the art only need determine to get final product according to knowing skill according to the substantial evidence needs of network.

After having determined threshold value relatively, when the edge customer ratio is lower than first threshold value, and the spectrum efficiency of each UE of sub-district reduces entering the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in raising when being lower than second threshold value; When the edge customer ratio is higher than the 3rd threshold value, and the spectrum efficiency of each UE of sub-district is when being higher than the 4th threshold value, improves to enter the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in reduction.

With edge customer ratio and the predefined first threshold T H1 _{CEU_ratio}, the 3rd threshold T H2 _{CEU_ratio}Relatively, with spectrum efficiency distributed intelligence and the predefined spectrum efficiency second threshold T H1 of UE in this section time period T1 _SE, the 4th threshold T H2 _SERelatively.With spectrum efficiency of cells distributed intelligence in the timing statistics and predefined spectrum efficiency second, can take following mode when the 4th threshold value compares: select for use the spectrum efficiency at x% place the poorest in the spectrum efficiency distribution curve and the threshold value of predefined spectrum efficiency to compare, the representative value of general X% is 5%.Can be 5% to be because in cellular mobile communication networks in force with the X% value, be used as the measurement index of the spectrum efficiency of this Cell Edge User usually with the spectrum efficiency at 5% place of CDF curve, here so the typical value of x% is 5%; But, in theory, also be fine with other value, 5% only is used to instruct those skilled in the art specifically how to implement the present invention, but does not mean and only can use 5% 1 value, can need come to determine corresponding value in conjunction with practice in the implementation process.

Just can adjust according to above two comparative results and to have made a strategic decision.If the edge customer ratio is lower than the predefined first threshold T H1 _{CEU_ratio}And the spectrum efficiency distributed intelligence of UE is lower than the predefined spectrum efficiency second threshold T H1 in the sub-district _SE, then explanation then should be adjusted the RSRP threshold value because the RSRP threshold value is provided with to such an extent that improperly make that sub-district inward flange user ratio is too low, as: the threshold T H1 that reduces the edge entry condition _RSRPAnd/or the threshold T H2 of condition is left in raising _RSRPThereby, can make more edge customer guarantee performances such as its throughput, QoS by ICIC.

If the edge customer ratio is higher than predefined the 3rd threshold T H2 _{CEU_ratio}, common TH1 _{CEU_ratio}≤ TH2 _{CEU_ratio}, and the spectrum efficiency distributed intelligence of each UE is higher than predefined the 4th threshold T H2 in the sub-district _SE, common TH1 _SE＜TH2 _SEThen explanation is because the RSRP threshold value is provided with to such an extent that improper feasible UE too much is judged as Cell Edge User, the performance of this sub-district can guarantee this moment, but because the edge customer ratio is too high and do not meet reality, when this sub-district and neighbor cell interacting load information, too much PRB must be designated as high interference, be set to 1 as the HII on the too much PRB, RNTP, thereby the resource of giving neighbor cell is used and has been caused unnecessary restriction, therefore can adjust local area RSRP threshold value, as: the threshold T H1 that improves the edge entry condition _RSRPAnd/or the threshold T H2 of condition is left in reduction _RSRP, make the edge customer ratio reduce, to improve the performance of neighbor cell.

In concrete the enforcement, can also be set cycle some time; Determine the spectrum efficiency of interior Cell Edge User ratio of each time cycle and each UE of sub-district; In each time cycle, determine according to the spectrum efficiency of edge customer ratio and each UE of sub-district whether needs are adjusted the RSRP threshold value in this time cycle; When the time cycle of needs adjustment RSRP threshold value occurs continuously, adjust the RSRP threshold value.

Promptly, when after basis satisfies condition, making a strategic decision, can be according to the period T adjustment, also can be only in the measurement period of the individual T1 of k (k is a positive integer) continuously, satisfy identical condition (as, continuously k statistics all find because the RSRP threshold value be provided with improper making) just trigger adjustment and make a strategic decision.

A kind of concrete execution mode can be to adopt counter to realize, for example: in edge customer ratio that obtains and the sub-district in the spectrum efficiency CDF distribution curve of each UE the spectrum efficiency at 5% place compare with the threshold value of judging in advance, and according to comparative result add up corresponding counter C1 or C2.If spectrum efficiency CDF differs from user's spectrum efficiency at 5% place most less than threshold T H1 in distributing _SE, and the edge customer ratio that obtains is less than threshold T H1 _{CEU_ratio}, accumulator C1 then adds up; If user's spectrum efficiency at 5% place was greater than threshold T H2 during spectrum efficiency CDF distributed _SE, and the edge customer ratio that obtains is higher than threshold T H2 _{CEU_ratio}, summary counter C2 then.Note, as long as among C1, the C2 numerical value is arranged, just can adjust, but, because the RSRP threshold value often is considered to be in and remains unchanged in one long period, in order to prevent to cause the mistuning of RSRP threshold value whole owing to the shake that reasons such as network is unusual occur, C1, C2 can be set at greater than just adjusting behind certain number of times (as 3 times), promptly, as all satisfying condition greater than certain number of times (as 3 times) continuously, then judgement is the adjustment owing to the RSRP threshold value of normal reason triggerings such as traffic load.

Concrete, make a strategic decision according to result relatively: if accumulator C1＞3 illustrate RSRP threshold T H _RSRPBe provided with too highly, guaranteed indexs such as user throughput, spectrum efficiency by ICIC, but the edge customer ratio be low excessively, should reduce threshold T H _RSRP, make more edge customer guarantee performance index such as its spectrum efficiency, throughput, QoS by ICIC.If C2＞3 then illustrate RSRP threshold T H _RSRPBe provided with lowly excessively, though this situation is not for having much harms with this sub-district, but bring unnecessary restriction must for the use of neighbor cell resource, as too much PRB being arranged at local area, its HII and RSRP are set to 1, cause the unnecessary reduction of priority when using these PRB of whole users of neighbor cell or edge customer.

In the enforcement, in order further to guarantee to adjust the reliability and the necessity of decision-making, can be when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district, further comprise: number and/or Zone information on load in conjunction with UE in the sub-district are adjusted.

When adjusting decision-making further combined with UE number in the timing statistics and traffic load information, as, when satisfying regularization condition, number in conjunction with UE in the timing statistics, if find that number is less, can think that then statistics can not fully reflect the truth of system, does not trigger adjustment.In addition, consider that the scene that the too high and spectrum efficiency of edge customer ratio surpasses threshold value can't bring not good influence to the performance of this sub-district, only may cause harmful effect to neighbor cell, if this moment, adjacent Zone load was not high, therefore this influence can clearly can not trigger adjustment yet.

In the enforcement, when having selected two parameters of number of traffic load information and UE to adjust the threshold value of RSRP, just be used for auxiliary scheme recited above based on the information of traffic load and UE information of number, after introducing these information, help to guarantee to make the validity and the reliability of RSRP threshold value adjustment decision-making.Say certain community user number for another example seldom, it is little to the performance impact of user in the sub-district in fact to be ICIC, can guarantee each user's transmission performance this moment fully by dynamic dispatching.Under this scene, carry out the adjustment of RSRP threshold value and just seem and be not very necessary.Therefore should use these two conditions in conjunction with the actual needs of network in implementing.

For the foregoing reasons, can also adopt other parameter to be used as whether carrying out the supplementary that above-mentioned RSRP adjusts decision-making in the enforcement, might not be confined to above-mentioned UE number and traffic load.Here having enumerated and having made RSRP threshold value adjustment decision-making in conjunction with UE number and traffic load information is integrality in order to describe, is to it is also conceivable that in order to illustrate different situations increases the accuracy that the RSRP threshold value is adjusted in concrete enforcement.

In the enforcement, can also further contemplate the influence that adjacent sub-district is adjusted the RSRP threshold value, can when adjusting the RSRP threshold value, adjust according to one of following information or its combination according to the spectrum efficiency of edge customer ratio and each UE of sub-district:

When considering the factor of adjacent sub-district, the adjustment of each sub-district RSRP threshold value can be carried out in base station side, also the relevant information of sub-district can be reported O﹠amp; M is by O﹠amp; M makes a policy in conjunction with information such as neighbor cell loads, the result is told to the base station again, finishes adjustment by the base station.Wherein the latter needs O﹠amp; M participates in, and needs to consider standardization base station and O﹠amp this moment; Mutual relevant information between the M.This relevant information can comprise that the spectrum efficiency of UE in this Cell Edge User ratio, the sub-district distributes, also can be corresponding dotted or gate limit value result relatively during edge customer ratio and threshold value, spectrum efficiency distribute, can also be based on the adjustment decision-making that said method makes (as, entry condition or the RSRP threshold value of leaving the condition correspondence raise or reduce several dB).

Select O﹠amp in the enforcement; The reason of M is, because the purpose of ICIC is the interference coordination of realizing between the sub-district, and in real network, an O﹠amp; M is a lot of sub-districts of management usually.If need O﹠amp; M participates in, and often means not to be that the information of inside, a sub-district just is enough to make a strategic decision O﹠amp; The purpose that M participates in is exactly because can obtain out the information of this sub-district other neighbor cell in addition, so that make the lifting of an integrated decision-making with better assurance systematic function.Why select O﹠amp; The M functional entity is that also access network equipment has only base station (eNodeB) in the LTE system, and the base station is directly connected to IAD, and O﹠amp; M itself is exactly an equipment of managing each base station and gateway; That is to say O﹠amp; There is the information of each sub-district the M the inside; On function, O﹠amp; The effect of M is an operation management maintain, and the self-optimizing of RSRP threshold value also belongs to a content of operation management maintain.

After the difference of considering above-mentioned execution entity, then can adopt following three kinds of schemes to handle:

Scheme 1, base station adjust the decision-making of RSRP and adjust accordingly, do not need O﹠amp; M participates in.

Scheme 2, base station adjust the decision-making of RSRP, and the result that will make a strategic decision (as, this sub-district RSRP threshold value is raised 2dB) report O﹠amp; M, O﹠amp; Whether M further adopts this decision-making according to the situation decision of neighbor cell, if the definite decision-making that can adopt the base station to make, then O﹠amp; M returns for the affirmation of making a strategic decision to the base station; If do not adopt, can not return any message and also can return the message that refusal is revised.

Incident and the satisfied number of times of each incident that threshold condition will be satisfied in scheme 3, base station report O﹠amp; M, O﹠amp; M adjusts decision-making further combined with the information of neighbor cell, and informing base station is adjusted strategy.

By above-mentioned enforcement, after adjustment is finished, just accumulator C1 and C2 zero clearing can be reset timer T1 or T, begin the monitoring of following one-period then.

Obviously, only this adjusts one of scheme for example to above embodiment for explanation, anyly utilizes the equipment that the RSRP threshold value is adjusted in spectrum efficiency CDF distributed intelligence in Cell Edge User ratio and the sub-district, can adopt this scheme.This scheme is mainly used in the wireless access network equipment and/or O﹠amp; Among the M.In concrete the enforcement, accumulator, counter C1 and C2 can be at O﹠amp; Among the M, also can be in base station side.For the execution that above two kinds of RSRP threshold values are adjusted, can all carry out in the base station, can be all at O﹠amp; M carries out, also can be respectively at base station and O﹠amp; Carry out among the M.

Based on same inventive concept, also provide Adjustment System, radio reception device, the O﹠amp of reference signal received power threshold in the embodiment of the invention; The M system, because the principle that these equipment are dealt with problems is similar to a kind of method of adjustment of reference signal received power threshold, so the enforcement of these equipment can repeat part and not give unnecessary details referring to the enforcement of method.

Fig. 3 is the Adjustment System structural representation of reference signal received power threshold, as shown in the figure, can comprise in system:

User's ratio determination module 301 is used for determining the Cell Edge User ratio;

Spectrum efficiency determination module 302 is used for determining the spectrum efficiency of each UE of sub-district;

Threshold value adjusting module 303 is used for adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

In the enforcement, user's ratio determination module can be realized with the functional entity that can obtain the edge customer ratio in the base station, for example: implement by ICIC module or the CCU/CEU discriminating module that changes in the module, these modules need judge that those edge customers can come the assurance of obtained performance by ICIC, so it can realize the function of user's ratio determination module among the embodiment.

In like manner, every functional entity that can get access to the spectrum efficiency of each UE of sub-district can be used as the spectrum efficiency determination module.

The threshold value adjusting module then can be realized by some equipment or functional entitys that possesses data-handling capacity, for example base station, O﹠amp; M system etc.For the execution that above RSRP threshold value is adjusted, can all carry out in the base station, can be all at O﹠amp; M carries out, also can be respectively at base station and O﹠amp; Carry out among the M

In the enforcement, the threshold value adjusting module is further used for being lower than first threshold value when the edge customer ratio, and the spectrum efficiency of each UE of sub-district reduces entering the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in raising when being lower than second threshold value; When the edge customer ratio is higher than the 3rd threshold value, and the spectrum efficiency of each UE of sub-district is when being higher than the 4th threshold value, improves to enter the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in reduction; Described first threshold value, second threshold value, the 3rd threshold value, the 4th threshold value are provided with according to the network practice, and first threshold value is less than the 3rd threshold value, and second threshold value is less than the 4th threshold value.

As previously mentioned, specifically can adopt components and parts, functional entitys such as accumulator, counter C1 and C2 to wait and realize that accumulator, counter C1 and C2 can be at O﹠amp; Among the M, also can be in base station side.

The threshold value adjusting module can also be further used for adjusting in conjunction with number and/or the Zone information on load of UE in the sub-district when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

In the enforcement, can further include in the system:

Information of adjacent cells acquisition module 304 is used to obtain one of following information or its combination: the spectrum efficiency of the spectrum efficiency of each UE of the traffic load information of neighbor cell, the edge customer ratio of neighbor cell, neighbor cell, the edge customer ratio of neighbor cell and threshold value, neighbor cell and threshold value result relatively;

Under this scheme, the threshold value adjusting module can be further used for adjusting according to the information that described information of adjacent cells acquisition module obtains when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

In the enforcement, can further include in the system:

Cycle is provided with module 305, is used to be provided with cycle some time;

Then, user's ratio determination module can be further used for determining Cell Edge User ratio in each time cycle;

The spectrum efficiency determination module can be further used for determining the spectrum efficiency of each UE of sub-district in each time cycle;

The threshold value adjusting module can be further used in each time cycle, determine according to the spectrum efficiency of edge customer ratio and each UE of sub-district whether needs are adjusted the RSRP threshold value in this time cycle, when the time cycle of needs adjustment RSRP threshold value occurs continuously, adjust the RSRP threshold value.

In the enforcement, user's ratio determination module can comprise first determining unit and/or second determining unit, wherein:

The spectrum efficiency determination module can be further used for when determining the spectrum efficiency of described each UE of sub-district, uses the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

The spectrum efficiency determination module can also be further used for after determining the spectrum efficiency of each UE of sub-district, and sorting and add up according to from big to small order obtains the CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district; And the spectrum efficiency that is identified for adjusting each UE of sub-district of RSRP is the spectrum efficiency at X% place the poorest in the described CDF distribution curve.

The spectrum efficiency determination module can be further used for determining that the typical value of described X% is 5%.

Fig. 4 is wireless access network equipment embodiment one structural representation, as shown in the figure, can comprise in the wireless access network equipment:

User's ratio determination module 401 is used for determining the Cell Edge User ratio;

Spectrum efficiency determination module 402 is used for determining the spectrum efficiency of each UE of sub-district;

Threshold value adjusting module 403 is used for adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

In this scheme, wireless access network equipment can be the base station, then under this scheme, is finished the spectrum efficiency of determining Cell Edge User ratio and each UE of sub-district by the base station; And the spectrum efficiency according to edge customer ratio and each UE of sub-district is adjusted the RSRP threshold value in the base station.

Fig. 5 is wireless access network equipment embodiment two structural representations, as shown in the figure, can comprise in the wireless access network equipment:

User's ratio determination module 501 is used for determining the Cell Edge User ratio;

Spectrum efficiency determination module 502 is used for determining the spectrum efficiency of each UE of sub-district;

Sending module 503 is used to send RSRP threshold value adjustment information, and described information comprises the spectrum efficiency of edge customer ratio and each UE of sub-district.

In the enforcement, wireless access network equipment can further include:

Threshold value adjusting module 504 is used for according to the RSRP threshold value adjustment decision-making that receives the RSRP threshold value being adjusted.

In this scheme, wireless access network equipment can be the base station, then under this scheme, finishes the spectrum efficiency of determining Cell Edge User ratio and each UE of sub-district by the base station, and it is sent, and transfers to other functional entity and goes to handle, such as O﹠amp; M.Other functional entity handle well obtain RSRP threshold value adjustment decision-making after, the base station is adjusted according to the RSRP threshold value adjustment decision-making of returning again.

Fig. 6 is operation and maintenance system embodiment one structural representation, as shown in the figure, and O﹠amp; Can comprise among the M:

Receiver module 601 is used to receive RSRP threshold value adjustment information, and described information comprises the spectrum efficiency of edge customer ratio and each UE of sub-district;

Threshold value is adjusted decision-making module 602, is used for determining according to the spectrum efficiency of edge customer ratio and each UE of sub-district the adjustment decision-making of RSRP threshold value;

Feedback module 603, the adjustment decision-making that is used to feed back described RSRP threshold value.

In this scheme, finish the spectrum efficiency of determining Cell Edge User ratio and each UE of sub-district by functional entitys such as base stations after, O﹠amp; M handles these information, and obtains RSRP threshold value adjustment decision-making, then base station etc. is returned in RSRP threshold value adjustment decision-making, transfers to it and adjusts according to the RSRP threshold value adjustment decision-making of returning.

Consider O﹠amp; The particularity of M, can transfer to it and handle RSRP threshold value integrated treatment between each sub-district, then this moment:

Receiver module can also be used to receive the RSRP threshold value adjustment information of each sub-district, and described information comprises the edge customer ratio of each sub-district and the spectrum efficiency of each UE of this sub-district;

Threshold value adjustment decision-making module can also be used for determining according to the spectrum efficiency of the edge customer ratio of each sub-district and each UE of this sub-district the adjustment decision-making of the RSRP threshold value of each sub-district;

Feedback module can also be used for the extremely corresponding sub-district of the adjustment decision feedback of each sub-district RSRP threshold value.

Fig. 7 is operation and maintenance system embodiment two structural representations, as shown in the figure, and O﹠amp; Can comprise among the M:

Receiver module 701, be used to receive the RSRP threshold value adjustment decision-making of each sub-district, described RSRP threshold value adjustment decision-making is that the affiliated wireless access network equipment in each sub-district is according to the edge customer ratio of this sub-district and the definite RSRP threshold value adjustment decision-making of spectrum efficiency of each UE of this sub-district;

Threshold value is adjusted decision-making module 702, is used for determining the 2nd RSRP threshold value adjustment decision-making that each sub-district is final in conjunction with the RSRP threshold value adjustment decision-making of each sub-district;

Feedback module 703 is used for the 2nd RSRP threshold value of each sub-district is adjusted decision feedback to corresponding sub-district.

Above-mentioned O﹠amp; M embodiment one and 2 two kinds of schemes of embodiment:

Embodiment two is decision-makings (RSRP threshold value adjustment decision-making) that wireless access network equipment (as: base station) is adjusted own RSRP threshold value of making according to the spectrum efficiency distribution of subscriber equipment in edge customer ratio and the sub-district, as improving 3dB, then this decision-making is told to O﹠amp; M, O﹠amp; M is by investigating the situation of each adjacent sub-district, draw final decision-making (the 2nd RSRP threshold value adjustment decision-making) then, as consider and the adverse effect of adjacent sub-district thought to improve 2dB, or think that improving 3dB can accept, at last final decision is told to the base station, that is, the 2nd RSRP threshold value of each sub-district is adjusted decision feedback to corresponding sub-district; The adjustment of RSRP threshold value decision-making is carried out in the base station at first in this scheme, and wireless access network equipment is only told the decision-making of oneself to O﹠amp then; M passes through O﹠amp; M finally confirms the reasonability of making a strategic decision, and transfers to each sub-district and adjust.

Embodiment one is that wireless access network equipment (as: base station) tells the information such as spectrum efficiency distribution of all subscriber equipmenies in edge customer ratio, the sub-district to O﹠amp; M is then by O﹠amp; M oneself compares with corresponding threshold value, and the decision-making of the RSRP threshold value of making adjustment is told this decision-making to the base station at last.RSRP threshold value adjustment decision-making is fully at O﹠amp in this scheme; Carry out O﹠amp among the M; M makes the direct informing base station in rational decision-making back and carries out this decision-making.In this scheme, wireless access network equipment is informed O﹠amp; M's is user's spectrum efficiency information in each Cell Edge User ratio, the sub-district, but not the decision-making of the RSRP threshold value adjustment among the embodiment two.

For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.

It should be noted that especially: in the invention process process, according to four thresholdings, in conjunction with number and/or the Zone information on load of UE in the sub-district, consider adjacent sub-district influence, cycle some time be set adjust the RSRP threshold value, and there is not mutex relation between the means of the spectrum efficiency of definite Cell Edge User and each UE of sub-district, enforcement can mutually combine, as for how carry out in conjunction with visual actual needs then, this knows for a person skilled in the art easily.

By the foregoing description as can be known, owing to dynamically adjust the RSRP threshold value according to edge customer ratio and each user's spectrum efficiency distributed intelligence of sub-district in the invention process, the actual scene that therefore can adapt to current area in time by the threshold value of adjusting RSRP, thereby brought into play the performance of ICIC fully, guaranteed the performance of edge customer and entire system.

Also provide in the enforcement to adjust decision-making and carry out and needed O﹠amp when adjusting decision-making; M participates in and does not need O﹠amp; The scheme that M participates in, and need O﹠amp when adjusting the RSRP threshold value; M participates in and does not need O﹠amp; The scheme that M participates in.

Further, in order more reliably and accurately to realize the self-optimizing of RSRP threshold value, can also carry out RSRP threshold value self-optimizing adjustment decision-making in conjunction with sub-district UE number, this sub-district and neighbor cell traffic load in the timing statistics.

In sum,, the Inter-Cell Interference Coordination technology is better played a role, improve the performances such as throughput, spectrum efficiency, QoS of edge customer, and further guarantee the overall performance of system by adopting the scheme in the embodiment of the invention; Alleviate since the RSRP threshold value be provided with phenomenons such as the improper incorrect resource that causes cell throughout, the spectrum efficiency performance of using restriction to bring be undesirable.

Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, these computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Claims

1. the method for adjustment of a Reference Signal Received Power RSRP threshold value is characterized in that, comprises the steps:

Determine the spectrum efficiency of Cell Edge User ratio and each user equipment (UE) of sub-district;

Spectrum efficiency according to edge customer ratio and each user equipment (UE) of sub-district is adjusted the RSRP threshold value.

2. the method for claim 1 is characterized in that, described spectrum efficiency according to edge customer ratio and each UE of sub-district is adjusted the RSRP threshold value, comprising:

3. as the arbitrary described method of claim 1 to 2, it is characterized in that, when adjusting the RSRP threshold value, further comprise according to the spectrum efficiency of edge customer ratio and each UE of sub-district:

4. as the arbitrary described method of claim 1 to 2, it is characterized in that, when adjusting the RSRP threshold value, further comprise according to the spectrum efficiency of edge customer ratio and each UE of sub-district:

Adjust according to one of following information or its combination:

5. as the arbitrary described method of claim 1 to 2, it is characterized in that, further comprise:

Cycle some time is set;

6. as the arbitrary described method of claim 1 to 2, it is characterized in that described Cell Edge User ratio is:

As/or,

7. as the arbitrary described method of claim 1 to 2, it is characterized in that, when determining the spectrum efficiency of described each UE of sub-district, use the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

8. as the arbitrary described method of claim 1 to 2, it is characterized in that, when determining the spectrum efficiency of described each UE of sub-district, further comprise: after determining the spectrum efficiency of each UE of sub-district, sorting and add up according to from big to small order obtains the cumulative distribution function CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district;

9. the Adjustment System of a reference signal received power threshold is characterized in that, comprising:

10. system as claimed in claim 9, it is characterized in that, described threshold value adjusting module is further used for being lower than first threshold value when the edge customer ratio, and when the spectrum efficiency of each UE of sub-district is lower than second threshold value, reduce entering the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in raising; When the edge customer ratio is higher than the 3rd threshold value, and the spectrum efficiency of each UE of sub-district is when being higher than the 4th threshold value, improves to enter the threshold value of cell edge condition and/or the threshold value that the cell edge condition is left in reduction; Described first threshold value, second threshold value, the 3rd threshold value, the 4th threshold value are provided with according to the network practice, and first threshold value is less than the 3rd threshold value, and second threshold value is less than the 4th threshold value.

11. as claim 9 or 10 described systems, it is characterized in that, described threshold value adjusting module is further used for adjusting in conjunction with number and/or the Zone information on load of UE in the sub-district when adjusting the RSRP threshold value according to the spectrum efficiency of edge customer ratio and each UE of sub-district.

12. as the arbitrary described system of claim 9 to 10, it is characterized in that, further comprise:

13. as the arbitrary described system of claim 9 to 10, it is characterized in that, further comprise:

Cycle is provided with module, is used to be provided with cycle some time;

14., it is characterized in that described user's ratio determination module comprises first determining unit and/or second determining unit as the arbitrary described system of claim 9 to 10, wherein:

15. as the arbitrary described system of claim 9 to 10, it is characterized in that, described spectrum efficiency determination module is further used for when determining the spectrum efficiency of described each UE of sub-district, uses the number of PRB to determine the spectrum efficiency of each UE according to bit number and each scheduling that the scheduling times of each UE, each dispatching office pass.

16. as the arbitrary described system of claim 9 to 10, it is characterized in that, described spectrum efficiency determination module is further used for after determining the spectrum efficiency of each UE of sub-district, and sorting and add up according to from big to small order obtains the CDF distribution curve of each UE spectrum efficiency Distribution Statistics in the sub-district; And the spectrum efficiency that is identified for adjusting each UE of sub-district of RSRP is the spectrum efficiency at X% place the poorest in the described CDF distribution curve.

17. a wireless access network equipment is characterized in that, comprising:

18. a wireless access network equipment is characterized in that, comprising:

19. wireless access network equipment as claimed in claim 18 is characterized in that, further comprises:

20. an operation and maintenance system is characterized in that, comprising:

21. operation and maintenance as claimed in claim 20 system is characterized in that,

Receiver module is used to receive the RSRP threshold value adjustment information of each sub-district, and described information comprises the edge customer ratio of each sub-district and the spectrum efficiency of each UE of this sub-district;

22. an operation and maintenance system is characterized in that, comprising: