CN102647737A - Method and system for self optimization of wireless parameters - Google Patents
Method and system for self optimization of wireless parameters Download PDFInfo
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Abstract
The invention discloses a method and system for self optimization of wireless parameters. The method comprises the following steps: a first base station determines the wireless parameters which need to be optimized in a first cell managed by the first base station and needing wireless parameter self optimization; the first base station selects a corresponding optimization strategy according to the wireless parameters and informs the OAM of carrying out evaluation; or, the first base station informs the OAM (operation, administration and maintenance) of selecting and evaluating the corresponding optimization strategy according to the wireless parameters; and the wireless parameters are optimized according to the optimization strategy after the optimization strategy passes the evaluation. The method and the system disclosed by the invention have the advantages that the optimization of different wireless parameters can be flexibly realized, the calculated amount of the current node is effectively reduced, and simultaneously, the reliability of parameter optimization also can be obviously increased.
Description
Technical field
The present invention relates to wireless communication field, be meant a kind of method and system of wireless parameter self-optimizing especially.
Background technology
In Long Term Evolution (LTE, Long Term Evolution) system, the network parameter number is huge, and correlation is strong, has higher complexity.System requirements newly adds the configuration and the minimum manual work intervention of managerial demand of base station in addition, and these have all proposed new requirement to the operation and maintenance to network.
In order to address the above problem, self-configuring self-optimizing network (SON, Self-configuring andself-optimizing network) is suggested and the effective means with Operating Complexity of being considered to reduce cost.The SON functional requirement is accomplished self-configuring, self-optimizing, is cured certainly.The self-configuring process, promptly newly deployed node is independently known necessary fundamental system operative configuration through " autoinstall procedure ", thereby realizes configuration automatically; The self-optimizing process, the result who promptly utilizes subscriber equipment (UE, User Equipment) to measure adjusts network automatically; From the healing process, promptly detect and locate most of problematic places automatically, and through curing machine-processed solve problem certainly.
SON can reduce cost and Operating Complexity to a great extent, so third generation partner program (3GPP, 3rd Generation Partnership Project) tissue is devoted to SON is incorporated in the LTE standard always, and is more and more come into one's own.At present 3GPP is with self-configuring among the SON and detailed the resolving into a plurality of functions and each function has been carried out detailed description of self-optimizing, pointed out the target that will realize.
The self-optimizing process of SON generally includes two parts, and one is the identification of network failure, and another is the optimization of network failure.Identification for fault generally just can identify fault based on information mutual between UE measurement result or the base station; And several functions that the optimizational function of network failure need realize for self-optimizing among the SON, like mobile robustness optimization (MRO; Mobility Robustness Optimization), the balanced (MLB of moving load; Mobility Load Balancing), Inter-Cell Interference Coordination (ICIC; Inter-cellInterference Coordination) etc., in the process of optimizing, all can relate to the modification of sub-district wireless parameter.In numerous wireless parameters, only can have influence on the wireless performance of this sub-district to the revision of a part of parameter, and can have influence on this sub-district and the wireless performance of the adjacent area of being correlated with the revision of a part of parameter.Influence surface according to parameter is different, also should take the optimization method of differentiation to the strategy of wireless parameter optimization.
At present; Normally in the method for the method of distributed wireless parameter self-optimizing and centralized wireless parameter self-optimizing, select one for the strategy of parameter self-optimizing; Be illustrated in figure 1 as centralized parameter optimization sketch map, shown in Figure 2 is distributed parameter optimization sketch map.
In the distributed wireless parameter self-organization method; The result who needs optimum parameters and parameter optimization by the base station decision; Such optimization method can carry out the optimization of sub-district wireless parameter on the one hand fast; So but then method need depend on the standard interface between the base station, has only interface message enough fully could realize and adjacent base station is held consultation with regard to the parameter that those can influence a plurality of sub-districts.But how abundant of interface message no matter; For a base station; All the time can not understand the information of other base station in whole zone or the network, tend to too unilaterally for Parameter Optimization, finally cause to be guaranteed the basic wireless performance in this sub-district.
Centralized wireless parameter optimization method can effectively overcome distributed deficiency; Can comprehensively consider needs the influence of optimum parameters to overall performance of network, but in existing network, the number of sub-district is numerous; If all the work of optimizing cells all concentrates on operation management maintain (OAM; OperationAdministration and Maintenance) node processing, this node of concentrating can bear very big load pressure so, and this node also becomes the hidden danger of security of system simultaneously.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of wireless parameter self-organization method and system, to solve the unreliability of the parameter optimization that centralized wireless parameter optimization method of pure use or distributed wireless parameter optimization method bring.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of wireless parameter self-optimizing, this method comprises:
First base station confirms that the needs of self administering carry out the wireless parameter that need optimize in first sub-district of wireless parameter self-optimizing;
Corresponding optimisation strategy is selected according to said wireless parameter in first base station, and notice is assessed to OAM; Perhaps, notice OAM in first base station selects corresponding optimisation strategy according to said wireless parameter and assesses;
Said assessment is optimized said wireless parameter according to optimisation strategy through the back.
Wherein, corresponding optimisation strategy is selected according to said wireless parameter in first base station, and notifies and assess to OAM, comprising:
Behind the wireless parameter that needs in said first sub-district that said first base station is confirmed self to administer to optimize; First base station is judged when said wireless parameter only exerts an influence to said first sub-district; Perhaps; First base station judges that said wireless parameter except said first sub-district is exerted an influence, also exerts an influence to second sub-district, and first base station is can obtain the essential information of said second sub-district time; Corresponding optimisation strategy is selected according to said wireless parameter in first base station, and the wireless parameter configuration before and after optimisation strategy, optimisation strategy used and sub-district wireless scene report OAM and assess.
Said assessment comprises through according to said optimisation strategy said wireless parameter being optimized:
When said wireless parameter only exerted an influence to said first sub-district, after assessment was passed through, OAM notified said first base station to be optimized according to the said wireless parameter of the first base station selected optimisation strategy to said first sub-district;
Said wireless parameter is except exerting an influence to said first sub-district; Also second sub-district is exerted an influence; And when first base station can obtain the essential information of said second sub-district, after assessment was passed through, OAM notified said first base station; According to the first base station selected optimisation strategy, the said wireless parameter to said first sub-district and said second sub-district is optimized separately by second base station under first base station and second sub-district.
First base station notice OAM selects corresponding optimisation strategy according to said wireless parameter, and assesses, and comprising:
Said wireless parameter is judged except said first sub-district is exerted an influence in first base station; Also second sub-district is exerted an influence; And when first base station can not obtain the essential information of said second sub-district; Said first base station notice OAM is optimized the said wireless parameter of said first sub-district and said second sub-district, and said OAM selects corresponding optimisation strategy according to said wireless parameter, and assesses according to wireless parameter configuration and sub-district wireless scene before and after optimisation strategy, the optimisation strategy application.
Said assessment comprises through according to said optimisation strategy said wireless parameter being optimized:
Said wireless parameter is except exerting an influence to said first sub-district; Also second sub-district is exerted an influence; And when first base station can not obtain the essential information of said second sub-district; After assessment was passed through, OAM notified second base station under said first base station and said second sub-district separately the said wireless parameter of said first sub-district and said second sub-district to be optimized according to the optimisation strategy that OAM selects.
Said optimisation strategy is assessed, comprising: assess the influence of said optimisation strategy to network performance, when assessment result met the network planning index of formulation, assessment was passed through; Otherwise assessment is not passed through.
The present invention also provides a kind of system of wireless parameter self-optimizing, and this system comprises: optimum decision module, optimization evaluation module and optimisation strategy storehouse, wherein:
Said optimisation strategy storehouse is used for Memory optimization strategy;
Be positioned at the said optimum decision module of first base station, the needs that are used for administering definite first base station carry out the wireless parameter of the first sub-district needs optimization of wireless parameter self-optimizing; Also be used for selecting corresponding optimisation strategy from said optimisation strategy storehouse, and report OAM according to said wireless parameter; Perhaps notify OAM to select corresponding optimisation strategy according to said wireless parameter;
Be positioned at the said optimum decision module of OAM, be used to receive the notice of said optimum decision module of first base station after, from said optimisation strategy storehouse, select corresponding optimisation strategy according to said wireless parameter;
Be positioned at the said optimization evaluation module of OAM, be used for the optimisation strategy that the said optimum decision module to first base station reports and assess; Also be used for the optimisation strategy that the said optimum decision module of self is selected is assessed;
Said optimum decision module also is used in assessment through according to optimisation strategy said wireless parameter being optimized.
Wherein, Be positioned at the said optimum decision module of first base station; Also be used for behind the wireless parameter of confirming the said first sub-district needs optimization that first base station is administered, judging when said wireless parameter only exerts an influence to said first sub-district, perhaps; Judge said wireless parameter except said first sub-district is exerted an influence; Also second sub-district is exerted an influence, and when confirming that first base station can obtain the essential information of said second sub-district, from said optimisation strategy storehouse, select corresponding optimisation strategy according to said wireless parameter; Also be used for wireless parameter configuration and sub-district wireless scene before and after optimisation strategy, the optimisation strategy application are reported the said optimization evaluation module that is positioned at OAM.
Be positioned at the said optimization evaluation module of OAM; Also be used for when said wireless parameter only exerts an influence to said first sub-district; And after assessment passed through, the optimum decision module that notice is positioned at said first base station was optimized according to the said wireless parameter of optimisation strategy to said first sub-district;
Be positioned at the said optimization evaluation module of OAM; Also be used at said wireless parameter except said first sub-district is exerted an influence; Also second sub-district is exerted an influence; And when first base station can obtain the essential information of said second sub-district, and the assessment pass through after, notify said first base station; According to optimisation strategy, the said wireless parameter to said first sub-district and said second sub-district is optimized separately by the said optimum decision module that is positioned at first base station and the said optimum decision module that is positioned at second base station under second sub-district.
Be positioned at the said optimum decision module of first base station; Also be used to judge said wireless parameter except said first sub-district is exerted an influence; Also second sub-district is exerted an influence; And when confirming that first base station can not obtain the essential information of said second sub-district, notice OAM is optimized the said wireless parameter of said first sub-district and said second sub-district;
Correspondingly; Be positioned at the said optimum decision module of OAM; Also be used for selecting corresponding optimisation strategy from said optimisation strategy storehouse, and wireless parameter configuration and the sub-district wireless scene before and after the optimisation strategy of selecting, the optimisation strategy application inputed to the said optimization evaluation module that is positioned at OAM according to said wireless parameter.
Be positioned at the said optimization evaluation module of OAM; Also be used at said wireless parameter except said first sub-district is exerted an influence; Also second sub-district is exerted an influence; And when first base station can not obtain the essential information of said second sub-district, and after assessment passes through, the said optimum decision module that notice is positioned at first base station is optimized the said wireless parameter of said first sub-district and said second sub-district according to optimisation strategy with the said optimum decision module that is positioned at second base station under second sub-district separately.
Be positioned at the said optimization evaluation module of OAM, also be used for when said optimisation strategy is assessed, the influence of said optimisation strategy to network performance, when assessment result met the network planning index of formulation, assessment was passed through; Otherwise assessment is not passed through.
A kind of wireless parameter self-organization method of the present invention and system; In the framework of existing protocol standard; Amount of information according to the base station can obtain makes a strategic decision whether carry out the optimization of wireless parameter by self, when confirming to be optimized by self, optimisation strategy is notified to the SON centralized control node, is that OAM assesses checking; After the assessment checking was passed through, the base station just can be revised the wireless parameter of one or more sub-district according to optimisation strategy; If can not make a strategic decision in the base station; So just essential information is reported to OAM; Be optimized subsequent steps such as decision-making, assessment checking by OAM; Overcome the unreliability of the centralized or distributed parameter optimization of bringing of pure use, improved the efficient and the reliability of system wireless parameter optimization, and can tackle the different radio Parameter Optimization flexibly; Base station and OAM share processing when can effectively reduce the amount of calculation when node to parameter optimization, can also the significant reliability that improves parameter optimization.
Description of drawings
Fig. 1 is centralized parameter optimization sketch map;
Fig. 2 is distributed parameter optimization sketch map;
Fig. 3 is the system configuration sketch map of mixed mode wireless parameter of the present invention self-optimizing;
Fig. 4 is the schematic flow sheet of wireless parameter self-optimizing of the present invention;
Fig. 5 is the application scenarios sketch map of wireless parameter self-optimizing of the present invention.
Embodiment
Defective for the method for the method that solves existing distributed wireless parameter self-optimizing and centralized wireless parameter self-optimizing; The present invention proposes a kind of wireless parameter self-organization method of mixed mode; Basic thought is: in the framework of existing protocol standard; Amount of information according to the base station can obtain makes a strategic decision whether carry out the optimization of wireless parameter by self, when confirming to be optimized by self, optimisation strategy is notified to the SON centralized control node, is that OAM assesses checking; After the assessment checking was passed through, the base station just can be revised the wireless parameter of one or more sub-district according to optimisation strategy; If can not make a strategic decision in the base station, so just essential information is reported to OAM, be optimized subsequent steps such as decision-making, assessment checking by OAM.
Be illustrated in figure 3 as the system configuration sketch map of the mixed mode wireless parameter self-optimizing of the present invention's proposition, this system comprises: optimum decision module, optimization evaluation module and optimisation strategy storehouse, wherein:
The optimisation strategy storehouse; Be used for Memory optimization strategy; The multiple optimisation strategy that has comprised wireless parameter; Comprise handoff parameter adjustment strategy, power parameter adjustment strategy and cell selecting reselecting parameters adjustment strategy etc., and in application process, can constantly replenish and perfect the optimisation strategy in the optimisation strategy storehouse.The optimisation strategy storehouse can be disposed separately, and simultaneously, all can there be backup in the optimisation strategy storehouse in acting server and the base station side of OAM, OAM, in case after the optimisation strategy storehouse was upgraded, it backed up everywhere all and can upgrade in time, shown in the dotted line among Fig. 3.
The optimum decision module mainly is the selection that is used for optimisation strategy, and its acting server and base station side at OAM, OAM all can be disposed, and is concrete:
Be positioned at the optimum decision module of first base station, the needs that are used for administering definite first base station carry out the wireless parameter of the first sub-district needs optimization of wireless parameter self-optimizing; Also be used for selecting corresponding optimisation strategy in (preferably, the optimisation strategy storehouse here is meant the backup in optimisation strategy storehouse in first base station) from the optimisation strategy storehouse, and report OAM according to wireless parameter; Perhaps notify OAM to select corresponding optimisation strategy according to wireless parameter;
Be positioned at the optimum decision module of OAM, be used to receive the notice of optimum decision module of first base station after, select corresponding optimisation strategy from the optimisation strategy storehouse in (preferably, the optimisation strategy storehouse here is meant the backup in optimisation strategy storehouse among the OAM) according to wireless parameter;
In addition, also disposed the optimization evaluation module on the OAM equipment, whether this module assesses optimisation strategy effectively with correct through simulation means.The input of optimizing evaluation module comprises: wireless parameter configuration before and after optimisation strategy, optimisation strategy are used and sub-district wireless scene etc.
Be positioned at the optimization evaluation module of OAM, be used for the optimisation strategy that the optimum decision module to first base station reports and assess; Also be used for the optimisation strategy that the optimum decision module of self is selected is assessed; When optimisation strategy was assessed, the assessment optimisation strategy was to the influence of network performance, and when assessment result met the network planning index of formulation, assessment was passed through; Otherwise assessment is not passed through.
The optimum decision module also is used in assessment through according to optimisation strategy wireless parameter being optimized.
Wherein, be positioned at the optimum decision module of first base station, also be used for behind the wireless parameter of confirming the first sub-district needs optimization that first base station is administered; Judge when wireless parameter only exerts an influence to first sub-district; Perhaps, judge that wireless parameter except first sub-district is exerted an influence, also exerts an influence to second sub-district; And when confirming that first base station can obtain the essential information of second sub-district, from the optimisation strategy storehouse, select corresponding optimisation strategy according to wireless parameter; Also be used for wireless parameter configuration and sub-district wireless scene before and after optimisation strategy, the optimisation strategy application are reported the said optimization evaluation module that is positioned at OAM.
Correspondingly, be positioned at the optimization evaluation module of OAM, also be used for when wireless parameter only exerts an influence to first sub-district, and after assessment passed through, the optimum decision module that notice is positioned at first base station was optimized according to the wireless parameter of optimisation strategy to first sub-district; Also be used at wireless parameter except first sub-district is exerted an influence; Also second sub-district is exerted an influence; And when first base station can obtain the essential information of second sub-district, and the assessment pass through after, notify first base station; According to optimisation strategy, the wireless parameter to first sub-district and second sub-district is optimized separately by the optimum decision module that is positioned at first base station and the optimum decision module that is positioned at second base station under second sub-district.
Be positioned at the optimum decision module of first base station; Also be used to judge wireless parameter except first sub-district is exerted an influence; Also second sub-district is exerted an influence, and when confirming that first base station can not obtain the essential information of second sub-district, notice OAM is optimized the wireless parameter of first sub-district and second sub-district;
Correspondingly; Be positioned at the optimum decision module of OAM; Also be used for selecting corresponding optimisation strategy from the optimisation strategy storehouse, and wireless parameter configuration and the sub-district wireless scene before and after the optimisation strategy of selecting, the optimisation strategy application inputed to the said optimization evaluation module that is positioned at OAM according to wireless parameter.
Correspondingly; Be positioned at the optimization evaluation module of OAM; Also be used at wireless parameter also second sub-district being exerted an influence, and first base station is can not obtain the essential information of second sub-district time except first sub-district is exerted an influence; And after assessment passed through, the optimum decision module that notice is positioned at first base station was optimized the wireless parameter of first sub-district and second sub-district according to optimisation strategy with the optimum decision module that is positioned at second base station under second sub-district separately.
Based on the mixed mode sketch map of wireless parameter self-optimizing shown in Figure 3, the wireless parameter self-optimizing flow process of mixed mode of the present invention is as shown in Figure 4, comprising:
The base station is according to the phenomenon of sub-district fault and the information of terminal to report, confirms the sub-district that need carry out the wireless parameter self-optimizing, and it is called first sub-district for the ease of subsequent descriptions.
The wireless parameter that first sub-district need be optimized is confirmed in base station (being referred to as first base station for the ease of subsequent descriptions) under the step 402, first sub-district.
First base station can be according to the fault of first sub-district of the analysis of strategies in the optimisation strategy storehouse; Confirm the wireless parameter that first sub-district need be optimized; According to the difference of fault, the power configuration parameter of wireless parameter such as sub-district up-downgoing, sub-district handoff threshold, cell selecting dedicated priority etc.
Step 405 judges whether first base station can get access to the essential information of second sub-district, if, execution in step 406; If not, execution in step 408;
The optimization evaluation module that wireless parameter configuration before and after step 407, first base station are used the optimisation strategy of selecting, optimisation strategy and sub-district wireless scene report OAM, execution in step 410 then.
Step 411 judges whether assessment is passed through, if pass through, and execution in step 412; Otherwise, execution in step 413;
Optimize of the influence of evaluation module assessment optimisation strategy to network performance; (formulate concrete network planning index if having a negative impact; When assessment result does not meet network planning index; For example the cavity appears in the covering of sub-district, the edge throughput does not reach network planning demand etc., promptly thinks network performance has been produced negative effect) assess so and do not pass through; Otherwise assessment is passed through.
Also had influence on the situation that second sub-district and first base station can obtain the essential information of second sub-district to the variation of wireless parameter; OAM notifies first base station, separately this wireless parameter of first sub-district and second sub-district is optimized by the base station under first base station and second sub-district (being referred to as second base station);
To the variable effect of wireless parameter to second sub-district and first base station can not obtain the situation of the essential information of second sub-district, OAM notifies first base station and second base station separately the wireless parameter of first sub-district and second sub-district to be optimized according to selected optimisation strategy;
Through concrete embodiment technique scheme of the present invention is described below.
Embodiment one
In wireless networking scene as shown in Figure 5, suppose that this wireless system is a LTE system, 3 sub-districts are arranged under each base station, 4 base stations belong to same OAM control among the figure, and the annexation between the base station is as shown in Figure 5.Provided in the LOAD INFORMATION message that the 2 discovery sub-districts 11, sub-district of base station 1 control send over and disturbed indication (show that 2 pairs of sub-districts 11, sub-district caused very high interference), this moment, the optimizing process of sub-district 2 wireless parameters was following:
1, base station 1 is issued in the LOAD INFORMATION message of sub-district 2 the high interference indication and is confirmed that the interference of 2 pairs of sub-districts 11, sub-district is too high according to sub-district 11;
2, base station 1 is learnt through analysis that the transmitting power of sub-district 2 present reference signals is too high and has been caused the interference of adjacent area excessively, needs to reduce the transmitting power of sub-district 2 reference signals, thereby reduces the interference to the adjacent area;
3, base station 1 according in the optimisation strategy storehouse to the optimisation strategy of high interference confirm needs to a wireless parameter of sub-district 2, be that the reference signal down transmitting power is optimized, the coverage of base station 1 this wireless parameter of assessment simultaneously;
4, base station 1 finds that the variation of this wireless parameter only can influence sub-district 2; Can not influence the descending power parameter of other sub-districts; So the corresponding optimisation strategy (as reducing reference signal down transmitting power 2dB) of high interference fault is selected in base station 1 from the optimisation strategy storehouse, and use the wireless parameter configuration of front and back and the optimization evaluation module that the sub-district wireless scene is notified OAM to this optimisation strategy, optimisation strategy;
Essential information when 5, optimizing evaluation module according to the network planning, whether assessment can have a negative impact to network planning index according to the revision of selected optimisation strategy to the reference signal down transmitting power of sub-district 2, covers edge throughput etc. like the sub-district;
6, optimize evaluation module and think that revised reference signal down transmitting power can not cause negative effect to the network planning; Then allow the reference signal down transmitting power of sub-district 2 is revised (the reference signal down transmitting power is reduced 2dB) according to selected optimisation strategy, and feed back to base station 1 to this result;
7, the reference signal down transmitting power of 1 revision sub-district 2, base station.
Embodiment two
In wireless networking scene as shown in Figure 5; Suppose that this wireless system is a LTE system; Sub-district 1 load of base station 1 control is too high; Need to carry out load balancing with sub-district on every side, its adjacent area has comprised sub-district 4, sub-district 5, sub-district 7 and sub-district 12, and this moment, the optimizing process of sub-district 1 wireless parameter was following:
1, the neighboring BS relationship of sub-district 1 is confirmed in base station 1, and obtains the Radio Resource information on load of sub-district 4, sub-district 5, sub-district 7 and sub-district 12 through the RESOURCE STATUSUPDATE message on the X2 mouth;
2, based on the information on load of these adjacent areas, the load that the utilization rate of base station 1 through cell radio resource can calculate sub-district 7 is minimum, so sub-district 7 is load down sub-districts of sub-district 1;
3, the strategy that solves problem of load balancing is found in base station 1 from the optimisation strategy storehouse; Find that the current network switching is based on the A5 incident, so base station 1 thinks that according to the analysis of strategies that solve problem of load balancing such scene just can solve the too high problem of sub-district 1 load through the skew of the cell-specific between revision sub-district 1 and the sub-district 7;
4, base station 1 has confirmed that needing the wireless parameter of optimized cell 1 is the cell-specific skew, assesses the coverage of this wireless parameter simultaneously;
5, base station 1 finds that the variation of this this wireless parameter can influence sub-district 7; Though sub-district 7 does not belong to base station 1; But base station 1 through and base station 3 between interface can get access to the essential information of sub-district 7 and can hold consultation through the MOBILITYCHANGE REQUEST related procedure on the X2 mouth between base station 1 and the base station 3 for the revision of this wireless parameter, so base station 1 decision is by the optimization of the cell-specific skew of oneself carrying out sub-district 1;
6, the corresponding optimisation strategy of cell-specific skew is selected in base station 1 in the optimisation strategy storehouse, and uses the wireless parameter configuration of front and back and the optimization evaluation module that the sub-district wireless scene is notified OAM to this optimisation strategy, optimisation strategy;
Whether the essential information when 7, optimizing evaluation module according to the network planning, the revision of evaluates cell specific offset can cause the cavity of switching and whether can make that handover failure rate surpasses network planning index etc.;
8, optimize evaluation module and think that revised cell-specific skew can not have influence on the covering of handover failure rate and network, therefore allows sub-district 1 and sub-district 7 are carried out respectively the optimization of cell-specific skew, and feeds back to base station 1 to this result;
9, base station 1 is passed through and base station 3 negotiations, and the cell-specific according to optimisation strategy revision sub-district 1 and sub-district 7 squints respectively.
Embodiment three
In wireless networking scene as shown in Figure 5, suppose that this wireless system is a LTE system, the fault in evening has taken place to switch in the sub-district 11 of base station 4 controls, and its adjacent area has comprised sub-district 3, sub-district 6 and sub-district 9, and this moment, sub-district 11 wireless parameter optimizing processs were following:
1, base station 4 is through the RRC CONNECTION RE-ESTABLISHMENT message of RLF INDICATION, HANDOVER REPORT message and terminal to report on the X2 mouth; Confirm that the fault in evening has taken place to switch in sub-district 11; Base station 4 is learnt and need the high speed zoom factor of sub-district 11 be optimized based on the analysis of strategies in the optimisation strategy storehouse, and confirms that the adjustment of this wireless parameter can have influence on the sub-district, adjacent area 3 and sub-district 6 of sub-district 11; But there is open standard interface to connect (be the essential information that base station 4 can only get access to sub-district 3, and can not get access to the essential information of sub-district 6) between 4 of base stations and the base station 1;
2, can not obtain sub-district 3 and can not obtain the essential information of sub-district 6 owing to base station 4; So late fault is crossed in the switching that the base station 4 definite optimizations that oneself can not accomplish wireless parameter (high speed zoom factor) solve sub-district 11; Send to OAM so 4 of the fault cells ID that obtains with the failure problems of sub-district 11, through RRC CONNECTIONRE-ESTABLISHMENT message and all base stations such as measurement and report information of UE are obtainable together with sub-district 11 relevant information, notify OAM that the wireless parameter of sub-district 11 is optimized;
3, OAM is after receiving the information that send base station 4; Find that this fault need be gone to solve by OAM; Therefore OAM is with the information Macro or mass analysis of each adjacent area of sub-district 11; And from the optimisation strategy storehouse, select to cross the optimisation strategy (supposing the high speed zoom factor in the sub-district 11 is adjusted to 0.25) that late fault type is consistent with the switching of sub-district 11, and the wireless parameter before and after this optimisation strategy, optimisation strategy used disposes and the sub-district wireless scene is input to the optimization evaluation module;
Essential information when 4, optimizing evaluation module according to the network planning, whether the adjustment of assessment high speed zoom factor can cause the handover success rate of other UE in the network to reduce;
5, evaluation module thinks that revised parameter can not influence the handover success rate of normal UE in the sub-district; Therefore allow sub-district 11 and sub-district, adjacent area 3 thereof, sub-district 6 optimizations high speed zoom factor separately, and feed back to this result each control base station, be base station 1, base station 2 and base station 4;
6, the high speed zoom factor is revised separately according to optimisation strategy in base station 1, base station 2 and base station 4.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (12)
1. the method for a wireless parameter self-optimizing is characterized in that, this method comprises:
First base station confirms that the needs of self administering carry out the wireless parameter that need optimize in first sub-district of wireless parameter self-optimizing;
Corresponding optimisation strategy is selected according to said wireless parameter in first base station, and notice is assessed to OAM; Perhaps, notice OAM in first base station selects corresponding optimisation strategy according to said wireless parameter and assesses;
Said assessment is optimized said wireless parameter according to optimisation strategy through the back.
2. according to the method for the said wireless parameter self-optimizing of claim 1, it is characterized in that corresponding optimisation strategy is selected according to said wireless parameter in first base station, and notify and assess, comprising to OAM:
Behind the wireless parameter that needs in said first sub-district that said first base station is confirmed self to administer to optimize; First base station is judged when said wireless parameter only exerts an influence to said first sub-district; Perhaps; First base station judges that said wireless parameter except said first sub-district is exerted an influence, also exerts an influence to second sub-district, and first base station is can obtain the essential information of said second sub-district time; Corresponding optimisation strategy is selected according to said wireless parameter in first base station, and the wireless parameter configuration before and after optimisation strategy, optimisation strategy used and sub-district wireless scene report OAM and assess.
3. according to the method for the said wireless parameter self-optimizing of claim 2, it is characterized in that said assessment comprises through according to said optimisation strategy said wireless parameter being optimized:
When said wireless parameter only exerted an influence to said first sub-district, after assessment was passed through, OAM notified said first base station to be optimized according to the said wireless parameter of the first base station selected optimisation strategy to said first sub-district;
Said wireless parameter is except exerting an influence to said first sub-district; Also second sub-district is exerted an influence; And when first base station can obtain the essential information of said second sub-district, after assessment was passed through, OAM notified said first base station; According to the first base station selected optimisation strategy, the said wireless parameter to said first sub-district and said second sub-district is optimized separately by second base station under first base station and second sub-district.
4. according to the method for the said wireless parameter self-optimizing of claim 2, it is characterized in that first base station notice OAM selects corresponding optimisation strategy according to said wireless parameter, and assesses, and comprising:
Said wireless parameter is judged except said first sub-district is exerted an influence in first base station; Also second sub-district is exerted an influence; And when first base station can not obtain the essential information of said second sub-district; Said first base station notice OAM is optimized the said wireless parameter of said first sub-district and said second sub-district, and said OAM selects corresponding optimisation strategy according to said wireless parameter, and assesses according to wireless parameter configuration and sub-district wireless scene before and after optimisation strategy, the optimisation strategy application.
5. according to the method for the said wireless parameter self-optimizing of claim 4, it is characterized in that said assessment comprises through according to said optimisation strategy said wireless parameter being optimized:
Said wireless parameter is except exerting an influence to said first sub-district; Also second sub-district is exerted an influence; And when first base station can not obtain the essential information of said second sub-district; After assessment was passed through, OAM notified second base station under said first base station and said second sub-district separately the said wireless parameter of said first sub-district and said second sub-district to be optimized according to the optimisation strategy that OAM selects.
6. according to the method for the arbitrary said wireless parameter self-optimizing of claim 1 to 5; It is characterized in that, said optimisation strategy is assessed, comprising: assess of the influence of said optimisation strategy network performance; When assessment result met the network planning index of formulation, assessment was passed through; Otherwise assessment is not passed through.
7. the system of a wireless parameter self-optimizing is characterized in that, this system comprises: optimum decision module, optimization evaluation module and optimisation strategy storehouse, wherein:
Said optimisation strategy storehouse is used for Memory optimization strategy;
Be positioned at the said optimum decision module of first base station, the needs that are used for administering definite first base station carry out the wireless parameter of the first sub-district needs optimization of wireless parameter self-optimizing; Also be used for selecting corresponding optimisation strategy from said optimisation strategy storehouse, and report OAM according to said wireless parameter; Perhaps notify OAM to select corresponding optimisation strategy according to said wireless parameter;
Be positioned at the said optimum decision module of OAM, be used to receive the notice of said optimum decision module of first base station after, from said optimisation strategy storehouse, select corresponding optimisation strategy according to said wireless parameter;
Be positioned at the said optimization evaluation module of OAM, be used for the optimisation strategy that the said optimum decision module to first base station reports and assess; Also be used for the optimisation strategy that the said optimum decision module of self is selected is assessed;
Said optimum decision module also is used in assessment through according to optimisation strategy said wireless parameter being optimized.
8. according to the system of the said wireless parameter self-optimizing of claim 7; It is characterized in that, be positioned at the said optimum decision module of first base station, also be used for behind the wireless parameter of confirming the said first sub-district needs optimization that first base station is administered; Judge when said wireless parameter only exerts an influence to said first sub-district; Perhaps, judge that said wireless parameter except said first sub-district is exerted an influence, also exerts an influence to second sub-district; And when confirming that first base station can obtain the essential information of said second sub-district, from said optimisation strategy storehouse, select corresponding optimisation strategy according to said wireless parameter; Also be used for wireless parameter configuration and sub-district wireless scene before and after optimisation strategy, the optimisation strategy application are reported the said optimization evaluation module that is positioned at OAM.
9. the system of said according to Claim 8 wireless parameter self-optimizing is characterized in that,
Be positioned at the said optimization evaluation module of OAM; Also be used for when said wireless parameter only exerts an influence to said first sub-district; And after assessment passed through, the optimum decision module that notice is positioned at said first base station was optimized according to the said wireless parameter of optimisation strategy to said first sub-district;
Be positioned at the said optimization evaluation module of OAM; Also be used at said wireless parameter except said first sub-district is exerted an influence; Also second sub-district is exerted an influence; And when first base station can obtain the essential information of said second sub-district, and the assessment pass through after, notify said first base station; According to optimisation strategy, the said wireless parameter to said first sub-district and said second sub-district is optimized separately by the said optimum decision module that is positioned at first base station and the said optimum decision module that is positioned at second base station under second sub-district.
10. the system of said according to Claim 8 wireless parameter self-optimizing; It is characterized in that; Be positioned at the said optimum decision module of first base station, be used to also judge that said wireless parameter except said first sub-district is exerted an influence, also exerts an influence to second sub-district; And when confirming that first base station can not obtain the essential information of said second sub-district, notice OAM is optimized the said wireless parameter of said first sub-district and said second sub-district;
Correspondingly; Be positioned at the said optimum decision module of OAM; Also be used for selecting corresponding optimisation strategy from said optimisation strategy storehouse, and wireless parameter configuration and the sub-district wireless scene before and after the optimisation strategy of selecting, the optimisation strategy application inputed to the said optimization evaluation module that is positioned at OAM according to said wireless parameter.
11. system according to the said wireless parameter self-optimizing of claim 10; It is characterized in that; Be positioned at the said optimization evaluation module of OAM; Also be used at said wireless parameter also second sub-district being exerted an influence, and first base station is can not obtain the essential information of said second sub-district time except said first sub-district is exerted an influence; And after assessment passed through, the said optimum decision module that notice is positioned at first base station was optimized the said wireless parameter of said first sub-district and said second sub-district according to optimisation strategy with the said optimum decision module that is positioned at second base station under second sub-district separately.
12. system according to the arbitrary said wireless parameter self-optimizing of claim 7 to 11; It is characterized in that; Be positioned at the said optimization evaluation module of OAM, also be used for when said optimisation strategy is assessed, the influence of said optimisation strategy to network performance; When assessment result met the network planning index of formulation, assessment was passed through; Otherwise assessment is not passed through.
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