CN104717704A - Switched parameter self-optimizing method and device - Google Patents
Switched parameter self-optimizing method and device Download PDFInfo
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- CN104717704A CN104717704A CN201510152799.0A CN201510152799A CN104717704A CN 104717704 A CN104717704 A CN 104717704A CN 201510152799 A CN201510152799 A CN 201510152799A CN 104717704 A CN104717704 A CN 104717704A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
Abstract
The invention discloses a switched parameter self-optimizing method and device. The method comprises the following steps: determining the application ranges of measurement event parameters in advance according to a configuration flow of measurement events involved with cell switching, and dividing the type of switched parameter optimization carried out by adjusting the switched parameters into global optimization, local optimization and terminal optimization; attributing the root of the problem of switching to wrong cells to division into too early switching and too late switching in advance; determining the corresponding optimization type according to the type of abnormity of neighbouring region switching, and carrying out corresponding switched parameter adjustment. The switched parameter self-optimizing method and device have the beneficial effects that different grain sizes of optimization modes can be adopted according to the types of abnormity of neighbouring region switching; the application ranges of the switched parameters needing to be adjusted during local optimization and terminal optimization are smaller than the application ranges of the switched parameters needing to be adjusted during global optimization, so that the ranges of influence of the adjusted switched parameters can be effectively reduced and then the probability of service performance reduction caused by frequently adjusting the switched parameters with larger ranges of influence can be reduced.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of self-optimization of switching parameter method and apparatus.
Background technology
Self-optimization of switching parameter is MRO (mobile robustness optimization, Mobility RobustnessOptimization) part of function, self-optimization of switching parameter refers to reduce unreasonable due to handoff parameter and under the various scenes caused Radio Link Failure, and the automatic adjustment of the handoff parameter carried out.
In prior art, mainly comprise question classification in the mode of self-optimization of switching parameter to determine, adjust handoff parameter, the assessment of handoff parameter Adjustment effect, and, determine whether to apply these links of adjustment for handoff parameter according to the result of parameter adjustment recruitment evaluation.
Inventor finds, by the mode of self-optimization of switching parameter in prior art, at least to there is following defect through research:
The probability that handoff parameter Adjustment effect is deteriorated is higher, thus have impact on Consumer's Experience and cause the waste of Internet resources.
Summary of the invention
Embodiments provide self-organization method and the device of handoff parameter, the probability that during to reduce self-optimization of switching parameter, Adjustment effect is deteriorated.
In the one side of invention, provide a kind of self-optimization of switching parameter method, comprise step:
The optimization Type division carrying out handoff parameter optimization by adjustment handoff parameter is global optimization, local optimum and these three kinds of granularities terminal optimized by S11, in advance the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge; Handoff parameter corresponding to described global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to described local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of described terminal optimized correspondence comprises the adjustment of the CIO of terminal;
S12, the adjacent area except the pingpang handoff of terminal is switched abnormal producing cause in advance and be summed up as and switch and cross evening too early and switch; And the Type division described adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of described too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The described scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; Described first alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Described second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
S13, add up all types of adjacent area respectively and switch abnormal switching times;
S14, carry out MRO optimize time comprise:
When the type that described adjacent area switches exception is pingpang handoff, carry out described terminal optimized;
When described homogeneous-frequency adjacent-domain switch abnormal statistics meet first pre-conditioned time, carry out described local optimum;
When described first alien frequencies adjacent area switch different statistics meet second pre-conditioned time, carry out described global optimization;
When described second alien frequencies adjacent area switch abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum.
Preferably, in embodiments of the present invention, describedly terminal optimizedly to comprise:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, by the CIO of described terminal being reduced the first default dB number, measurement reprovision is carried out to described terminal;
When the continuous pingpang handoff number of times of terminal reaches the second preset times, by the CIO of described terminal being reduced the second default dB number, measurement reprovision is carried out to described terminal; Described second preset times is greater than described first preset times, and described second presets dB number is greater than the described first default dB number;
When the continuous pingpang handoff number of times of terminal is greater than the second preset times, prompting user base station cannot solve the pingpang handoff problem of described terminal.
Preferably, in embodiments of the present invention, describedly terminal optimizedly to comprise:
Obtain the current resident duration of the current area of terminal after pingpang handoff and the former resident duration of the community of described terminal before pingpang handoff;
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number; Described 4th presets dB number is less than the described 3rd default dB number;
Be more than or equal to described second preset duration when described current resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the described 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
Preferably, in embodiments of the present invention, described when described homogeneous-frequency adjacent-domain switch abnormal statistics meet first pre-conditioned time, carry out described local optimum, comprising:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event is reduced a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
Preferably, in embodiments of the present invention, described when described first alien frequencies adjacent area switch different statistics meet second pre-conditioned time, carry out described global optimization, comprising:
Arrive when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold and preset, the thresholding of A2 event is increased a step-length.
Preferably, in embodiments of the present invention, described when described second alien frequencies adjacent area switch abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum, comprising:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event is reduced by a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
Preferably, in embodiments of the present invention, the defining method crossing switching in evening that described A2 event is correlated with comprises:
When the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and when default A2 event thresholds is less than default A1 event thresholds, judge that adjacent area switches to switch the evening that crosses relevant to A2 event;
The late switching proportion of mistake that described A2 event is relevant is: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
Preferably, in embodiments of the present invention, also step is comprised:
S14, when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, according to the handoff parameter rollback optimizing type and carry out appropriate level;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is that the whole mobile robustness of rollback optimizes all handoff parameters adjusted in MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
Preferably, in embodiments of the present invention, also step is comprised:
S15, when the punishment of table tennis adjustment carrying out handoff parameter, determine to cause the optimization type belonging to handoff parameter of table tennis adjustment, according to the handoff parameter punishment optimizing type and carry out appropriate level;
The rank of described handoff parameter punishment comprises: overall situation punishment and local punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
In another aspect of this invention, additionally provide a kind of self-optimization of switching parameter device, comprising:
Optimize granularity division unit, for the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge in advance, be global optimization, local optimum and these three kinds of granularities terminal optimized by the optimization Type division being carried out handoff parameter optimization by adjustment handoff parameter; Handoff parameter corresponding to described global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to described local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of described terminal optimized correspondence comprises the adjustment of the CIO of terminal;
Switch dividing anomaly unit, the producing cause in advance the adjacent area except the pingpang handoff of terminal being switched exception is summed up as switching too early and crosses switching in evening; And the Type division described adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of described too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The described scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; Described first alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Described second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
Statistic unit, switches abnormal switching times for adding up all types of adjacent areas respectively;
Optimize unit, for carrying out MRO optimization, described optimization unit comprises:
Terminal optimized module, when being pingpang handoff for switching abnormal type when described adjacent area, carries out described terminal optimized;
First local optimum module, for switch when described homogeneous-frequency adjacent-domain abnormal statistics meet first pre-conditioned time, carry out described local optimum;
Global optimization module, for switch when described first alien frequencies adjacent area different statistics meet second pre-conditioned time, carry out described global optimization;
Second local optimum module, for switch when described second alien frequencies adjacent area abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum.
Preferably, in embodiments of the present invention, described terminal optimized module comprises measurement reprovision assembly and prompting assembly;
Described measurement reprovision assembly is used for:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, by the CIO of described terminal being reduced the first default dB number, measurement reprovision is carried out to described terminal;
When the continuous pingpang handoff number of times of terminal reaches the second preset times, by the CIO of described terminal being reduced the second default dB number, measurement reprovision is carried out to described terminal; Described second preset times is greater than described first preset times, and described second presets dB number is greater than the described first default dB number;
Described prompting assembly is used for:
When the continuous pingpang handoff number of times of terminal is greater than the second preset times, prompting user base station cannot solve the pingpang handoff problem of described terminal.
Preferably, in embodiments of the present invention, described terminal optimized module comprises resident duration securing component and table tennis adjustment assembly;
Described resident duration securing component is for the former resident duration of the current resident duration and the community of described terminal before pingpang handoff that obtain the current area of terminal after pingpang handoff;
Described table tennis adjustment assembly is used for:
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number; Described 4th presets dB number is less than the described 3rd default dB number;
Be more than or equal to described second preset duration when described current resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the described 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
Preferably, in embodiments of the present invention, described first local optimum module comprises the first parameter adaptation component; Described first parameter adaptation component is used for:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event is reduced a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
Preferably, in embodiments of the present invention, described global optimization module comprises the second parameter adaptation component; Described second parameter adaptation component is used for:
Arrive when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold and preset, the thresholding of A2 event is increased a step-length.
Preferably, in embodiments of the present invention, described second local optimum module comprises the 3rd parameter adaptation component; Described 3rd parameter adaptation component is used for:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event is reduced by a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
Preferably, in embodiments of the present invention, described switching dividing anomaly unit comprised late switching judging unit;
The late switching judging unit of described mistake is used for:
When the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and when default A2 event thresholds is less than default A1 event thresholds, judge that adjacent area switches to switch the evening that crosses relevant to A2 event;
The late switching proportion of mistake that described A2 event is relevant is: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
Preferably, in embodiments of the present invention, rollback control unit is also comprised;
Described rollback control unit is used for when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, and carries out the handoff parameter rollback of appropriate level according to optimization type;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is that the whole mobile robustness of rollback optimizes all handoff parameters adjusted in MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
Preferably, in embodiments of the present invention, handoff parameter punishment unit is also comprised:
Described handoff parameter punishes that unit is used for, when the punishment of table tennis adjustment carrying out handoff parameter, determining the optimization type belonging to handoff parameter causing table tennis adjustment, carrying out the handoff parameter punishment of appropriate level according to optimization type;
The rank of described handoff parameter punishment comprises: overall situation punishment and local punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
Learnt by above-mentioned, the embodiment of the present invention is by by the optimization Type division carrying out handoff parameter optimization being global optimization, local optimum and terminal optimized these three kinds optimization granularities in advance, and be divided into switching too early and switching too early by being switched to this handoff scenario of wrong cell according to the origin cause of formation of different handoff errors, thus the handoff scenario making adjacent area switch exception has only included pingpang handoff, too early switching and has switched these three kinds too early, then, switch abnormal type according to the adjacent area divided in advance determine corresponding optimization type and carry out corresponding handoff parameter adjustment; In embodiments of the present invention, abnormal type can be switched according to adjacent area and adopt different optimal way, due to local optimum and terminal optimized time the range of application of handoff parameter that need adjust be less than global optimization time the handoff parameter that need adjust, so the coverage by effectively can reduce adjustment handoff parameter for the division optimizing type, and then also just decrease the probability owing to frequently adjusting the service performance decline that the larger handoff parameter of coverage causes.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the step schematic diagram of the method for self-optimization of switching parameter described in the application;
Fig. 2 is the schematic flow sheet of the method for self-optimization of switching parameter described in the application;
Fig. 3 is the another schematic flow sheet of the method for self-optimization of switching parameter described in the application;
Fig. 4 is the structural representation of the device of self-optimization of switching parameter described in the application.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to decrease the probability owing to adjusting the service performance decline that handoff parameter causes, embodiments providing a kind of self-optimization of switching parameter method, as shown in Figure 1, comprising step:
The optimization Type division carrying out handoff parameter optimization by adjusting handoff parameter is global optimization, local optimum and these three kinds of granularities terminal optimized by S11, first the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge; Handoff parameter corresponding to global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of terminal optimized correspondence comprises the adjustment of the CIO of terminal;
During cell merge, involved measurement event includes multiple, as A2 event, A3 event, A4 event or A5 event etc., measurement event parameter involved by its configuration flow of different measurement event is also different, and measurement event parameters different in this application also can be called handoff parameter; Different handoff parameters its scope that is suitable for also be different, such as, some handoff parameters can affect the overall situation, and some handoff parameters can affect the pair relationhip of Serving cell and adjacent area, and some handoff parameters only understand the CIO of shadow terminal.
In embodiments of the present invention, according to the difference of the scope that handoff parameter affects, optimization type has been carried out classification division, concrete, according to the difference of the scope of application of handoff parameter, the adjustment of handoff parameter of the impact overall situation is divided to global optimization, and handoff parameter corresponding to global optimization comprises the thresholding of various measurement event, the adjustment of TTT and HYS; The handoff parameter that pair relationhip for Serving cell and adjacent area is optimized is divided to local optimum, the concrete adjustment that can comprise the CIO in A3 event, A4 event or A5 event; The adjustment of the CIO for terminal is divided to terminal optimized.
By above-mentioned division, can make when carrying out handoff parameter and optimizing more pointed, thus the adjustment number of times effectively reduced for the larger handoff parameter of coverage, the service performance that can may cause due to the adjustment of the larger handoff parameter of coverage declines, so reduce the adjustment number of times for the larger handoff parameter of coverage, also effectively will reduce the service performance caused due to the adjustment of handoff parameter and decline.
S12, the adjacent area except the pingpang handoff of terminal is switched abnormal producing cause in advance and be summed up as and switch and cross evening too early and switch; And Type division adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; First alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
In embodiments of the present invention, also the division of mode is unlike the prior art carried out to handoff scenario, concrete, except adopt mode of the prior art to determine handoff scenario be whether pingpang handoff, too early switch and spend evening and switch except, also carry out further division to being switched to this handoff scenario of wrong cell, according to the difference by reason abnormal for the adjacent area switching except the pingpang handoff of terminal, wrong cell will be switched to and be divided to switching too early and cross late switching, concrete:
Because the Crack cause being switched to wrong cell specifically comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell, its essence reason can be considered to carry out too early switching and cause be switched to wrong cell, so can be divided into too early switching; And be reconstructed into non-source owing to there is Radio Link Failure in transition community and the Target cell of non-transition community and cause be switched to wrong cell, then can be considered to cause due to the switching in evening excessively, be switched so evening can be divided into.
Due in this application, divide by switching abnormal producing cause according to adjacent area, thus the adjustment of corresponding handoff parameter can be carried out according to the different origins being switched to wrong cell, so the effect of optimization of handoff parameter effectively can be improved.
In embodiments of the present invention, also in advance abnormal type is switched to adjacent area and divide, thus the adjustment of follow-up handoff parameter can be made more targeted, and then improve effect of optimization; In the embodiment of the present invention, abnormal Type division is switched for adjacent area and also introduce event correlation, such as, by judging that extremely whether adjacent area switching is that the switching in evening of crossing of being correlated with by A2 event causes, determine to adopt corresponding optimization type to carry out the adjustment of handoff parameter, namely, the embodiment of the present invention is by combining the actual measurement mechanism of mobile communications network, judge that adjacent area switches abnormal cause from Survey control process, thus determine suitable optimization type, thus more pointed and practicality.
S13, add up all types of adjacent area respectively and switch abnormal switching times;
After determining the abnormal type of adjacent area switching, needing to switch abnormal number of times by adding up all types of adjacent areas respectively, being used as determination parameter when follow-up MRO optimizes, namely, switch abnormal switching times according to adjacent area, determine the parameter that should optimize, and take what kind of optimal way.
In actual applications, relevant the spending evening and switch of A2 event is made add up time, determine whether as whether relevant the spending evening and switch of A2 event can judge by meeting the following conditions:
When the base station reprovision UE that is not also able to do in time measures or UE measures reprovision failure, and cell-of-origin has legal, an available alien frequencies adjacent area at least, that is, now also do not come and configuration UE carries out A3/A4/A5 nearby region measurement.When meeting above-mentioned condition, both can determine that this adjacent area switched and having switched the abnormal evening that crosses relevant for A2 event.
In S14, the embodiment of the present invention, when carrying out MRO and optimizing, switch abnormal type according to adjacent area and determine corresponding optimization type and the concrete mode of carrying out corresponding handoff parameter adjustment can comprise:
When the type that adjacent area switches exception is pingpang handoff, carry out terminal optimized; In actual applications, carry out terminal optimized mode and optionally can adopt following two kinds of modes:
The first:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, the CIO of described terminal is reduced first and presets dB number, carry out measurement reprovision to described terminal, concrete can be set to 1dB by the first default dB number; .
When the continuous pingpang handoff number of times of terminal reaches the second preset times, the CIO of described terminal is reduced second and presets dB number, measurement reprovision second preset times is carried out to described terminal and is greater than the first preset times, such as, second preset times can be set to the first preset times+2, preset dB number by second and be set to 2dB;
When the continuous pingpang handoff number of times of terminal is greater than the second preset times thresholding, now, by generating corresponding information, the pingpang handoff problem that user base station cannot solve terminal can be pointed out.
The second:
Obtain the current resident duration of the current area of terminal after pingpang handoff and the former resident duration of the community of described terminal before pingpang handoff;
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number, concrete, dB number can be preset by the 3rd and be set to 2dB;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number, concrete, dB number can be preset by the 4th and be set to 1dB;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
When homogeneous-frequency adjacent-domain switch abnormal statistics meet first pre-conditioned time, carry out local optimum, specifically can comprise:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event is reduced a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
When described first alien frequencies adjacent area switch abnormal statistics meet second pre-conditioned time, carry out global optimization, described global optimization can be specifically, when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold, the thresholding of A2 event is increased a step-length.
When described second alien frequencies adjacent area switch different statistics meet the 3rd pre-conditioned time, carry out described local optimum; Described local optimum can be specifically:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event is reduced by a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
Further, in embodiments of the present invention whether, determine that adjacent area switches abnormal is switch the evening that crosses that A2 event is relevant, concrete mode can comprise:
When the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and when default A2 event thresholds is less than default A1 event thresholds, judge that adjacent area switches to switch the evening that crosses relevant to A2 event;
The late switching proportion of mistake that described A2 event is relevant is: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
Further, in embodiments of the present invention, the step of carrying out handoff parameter rollback can also be included, concrete:
S15, when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, according to the handoff parameter rollback optimizing type and carry out appropriate level;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is all handoff parameters adjusted in rollback whole MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
Can be learnt by foregoing description, in embodiments of the present invention, the rollback rank of parameter is also divided, thus when causing hydraulic performance decline owing to carrying out cutting parameter optimization, when needing the rollback carrying out handoff parameter, the scope of the handoff parameter of rollback can be made more pointed, thus the reason determining to cause hydraulic performance decline can be more prone to, avoid the optimization of invalid handoff parameter repeatedly.
In embodiments of the present invention, described handoff parameter rollback specifically refers to, when due to carry out cutting parameter optimization cause hydraulic performance decline time, the adjustment of the handoff parameter of last time is cancelled, state before making handoff parameter return to the adjustment of this handoff parameter, concrete, in embodiments of the present invention, the self-optimization of switching parameter method including handoff parameter rollback step can as shown in Figure 2, concrete:
First sample statistics to be carried out to the cell merge number of times in the MRO cycle, when cell merge number of times is greater than preset number, think that sample is enough, otherwise the cell merge number of times in the epicycle MRO cycle adds up the cell merge number of times to next MRO cycle, when still not meeting the enough preset number of sample to the cell merge number of times in the MRO cycle of predetermined number, reset statistics number and again add up.
When sample is enough, need to calculate current cell merge performance, now:
When cell merge performance degradation and when handoff parameter is optimized, now illustrate that the effect of last parameter optimization is bad, need to cancel last handoff parameter optimization, that is, carry out handoff parameter rollback; Before carrying out handoff parameter rolling back action, the optimization type belonging to handoff parameter first will determined to cause estate performance to decline and adjust, then according to the handoff parameter rollback optimizing type and carry out appropriate level.
When cell merge performance is good not, need, according to mode described in step S14 in the present embodiment, to determine optimal way, and carry out the handoff parameter optimization of appropriate level.
Further, in embodiments of the present invention, the step of the punishment of the table tennis adjustment carrying out handoff parameter can also be included, specifically can comprise:
S16, carry out handoff parameter time, determine to cause the optimization type belonging to handoff parameter of table tennis adjustment, according to the handoff parameter punishment optimizing type and carry out appropriate level;
The rank of described handoff parameter punishment comprises: overall situation punishment and local punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
In this application, the handoff parameter punishment of described table tennis adjustment refers to, when within certain cycle (namely, table tennis adjustment handoff parameter punishment the cycle) table tennis adjustment number of times arrive preset times time, the operation that the handoff parameter carrying out this table tennis adjustment is optimized is stopped the duration presetting, avoid the invalid adjustment of too much number of times; In embodiments of the present invention, include cut the self-optimization of switching parameter method of carrying out handoff parameter punishment can be as shown in Figure 3; Similar with the principle of handoff parameter rollback in the application, the embodiment of the present invention is divided by the rank of punishing handoff parameter, thus can be more accurate for the determination of the reason causing table tennis adjustment.
At the another side of the embodiment of the present invention, additionally provide a kind of self-optimization of switching parameter device, as shown in Figure 4, comprising:
Optimize granularity division unit 01, for the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge in advance, be global optimization, local optimum and these three kinds of granularities terminal optimized by the optimization Type division being carried out handoff parameter optimization by adjustment handoff parameter; Handoff parameter corresponding to described global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to described local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of described terminal optimized correspondence comprises the adjustment of the CIO of terminal;
Switch dividing anomaly unit 02, the producing cause in advance the adjacent area except the pingpang handoff of terminal being switched exception is summed up as switching too early and crosses switching in evening; And the Type division described adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of described too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The described scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; Described first alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Described second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
Statistic unit 03, switches abnormal switching times for adding up all types of adjacent areas respectively;
Optimize unit 04, for carrying out MRO optimization, described optimization unit 04 comprises:
Terminal optimized module 41, when being pingpang handoff for switching abnormal type when described adjacent area, carries out described terminal optimized;
First local optimum module 42, for switch when described homogeneous-frequency adjacent-domain abnormal statistics meet first pre-conditioned time, carry out described local optimum;
Global optimization module 43, for switch when described first alien frequencies adjacent area different statistics meet second pre-conditioned time, carry out described global optimization;
Second local optimum module 44, for switch when described second alien frequencies adjacent area abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum.
In embodiments of the present invention, optimize the difference of the scope that granularity division unit 01 affects according to handoff parameter, optimization type has been carried out classification division, concrete, according to the difference of the scope of application of handoff parameter, the adjustment of handoff parameter of the impact overall situation is divided to global optimization, and handoff parameter corresponding to global optimization comprises the thresholding of various measurement event, the adjustment of TTT and HYS; The handoff parameter that pair relationhip for Serving cell and adjacent area is optimized is divided to local optimum, the concrete adjustment that can comprise the CIO in A3 event, A4 event or A5 event; The adjustment of the CIO for terminal is divided to terminal optimized.
By above-mentioned division, can make when carrying out handoff parameter and optimizing more pointed, thus the adjustment number of times effectively reduced for the larger handoff parameter of coverage, the service performance that can may cause due to the adjustment of the larger handoff parameter of coverage declines, so reduce the adjustment number of times for the larger handoff parameter of coverage, also effectively will reduce the service performance caused due to the adjustment of handoff parameter and decline.
Then, in embodiments of the present invention, also carried out the division of mode unlike the prior art by switching dividing anomaly unit 02 pair of handoff scenario, and the type that adjacent area switching is abnormal has been divided;
Concrete, except adopt mode of the prior art to determine handoff scenario be whether pingpang handoff, too early switch and spend evening and switch except, also carry out further division to being switched to this handoff scenario of wrong cell, according to the difference adjacent area except the pingpang handoff of terminal being switched abnormal reason, wrong cell will be switched to be divided to switching too early and cross switching in evening, concrete:
Because the Crack cause being switched to wrong cell specifically comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell, its essence reason can be considered to carry out too early switching and cause be switched to wrong cell, so can be divided into too early switching; And be reconstructed into non-source owing to there is Radio Link Failure in transition community and the Target cell of non-transition community and cause be switched to wrong cell, then can be considered to cause due to the switching in evening excessively, be switched so evening can be divided into.
Due in this application, divide by switching abnormal producing cause according to adjacent area, thus the adjustment of corresponding handoff parameter can be carried out according to the different origins being switched to wrong cell, so the effect of optimization of handoff parameter effectively can be improved.
In embodiments of the present invention, switch dividing anomaly unit 02 and also in advance the type that adjacent area switching is abnormal is divided, thus the adjustment of follow-up handoff parameter can be made more targeted, and then improve effect of optimization; In the embodiment of the present invention, abnormal Type division is switched for adjacent area and also introduce event correlation, such as, by judging that extremely whether adjacent area switching is that the switching in evening of crossing of being correlated with by A2 event causes, determine to adopt corresponding optimization type to carry out the adjustment of handoff parameter, namely, the embodiment of the present invention is by combining the actual measurement mechanism of mobile communications network, judge that adjacent area switches abnormal cause from Survey control process, thus determine suitable optimization type, thus more pointed and practicality.
After determining the abnormal type of adjacent area switching, need to add up all types of adjacent areas respectively by statistic unit 03 and switch abnormal number of times, be used as determination parameter when follow-up MRO optimizes, namely, abnormal switching times is switched according to adjacent area, determine the parameter that should optimize, and take what kind of optimal way.
In actual applications, relevant the spending evening and switch of A2 event is made add up time, determine whether as whether relevant the spending evening and switch of A2 event can judge by meeting the following conditions:
When the base station reprovision UE that is not also able to do in time measures or UE measures reprovision failure, and cell-of-origin has legal, an available alien frequencies adjacent area at least, that is, now also do not come and configuration UE carries out A3/A4/A5 nearby region measurement.When meeting above-mentioned condition, both can determine that this adjacent area switched and having switched the abnormal evening that crosses relevant for A2 event.
When carrying out MRO and optimizing, optimize unit 04 to determine corresponding optimization type according to the type that adjacent area switching is abnormal and carry out corresponding handoff parameter adjustment, optimize unit 04 specifically can comprise: terminal optimized module 41, first local optimum module 42, global optimization module 43 and the second local optimum module 44, each module specific works mode optimized in unit 04 comprises:
Terminal optimized module 41, when being pingpang handoff for switching abnormal type when described adjacent area, carries out described terminal optimized; Concrete can be measure reprovision assembly and prompting assembly realizes by terminal optimized module 41 is included, wherein,
Described measurement reprovision assembly is used for: when the continuous pingpang handoff number of times of terminal reaches the first preset times, carries out measurement reprovision by the CIO of described terminal being reduced the first default dB number to described terminal; When the continuous pingpang handoff number of times of terminal reaches the second preset times, by the CIO of described terminal being reduced the second default dB number, measurement reprovision is carried out to described terminal; Described second preset times is greater than described first preset times, and described second presets dB number is greater than the described first default dB number;
Described prompting assembly is used for: when the continuous pingpang handoff number of times of terminal is greater than the second preset times, and prompting user base station cannot solve the pingpang handoff problem of described terminal.
Specifically, the working method measuring reprovision assembly can be:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, the CIO of described terminal is reduced first and presets dB number, carry out measurement reprovision to described terminal, concrete can be set to 1dB by the first default dB number; .
When the continuous pingpang handoff number of times of terminal reaches the second preset times, the CIO of described terminal is reduced second and presets dB number, measurement reprovision second preset times is carried out to described terminal and is greater than the first preset times, such as, second preset times can be set to the first preset times+2, preset dB number by second and be set to 2dB;
When the continuous pingpang handoff number of times of terminal is greater than the second preset times thresholding, now, corresponding information can be generated by prompting assembly, point out the pingpang handoff problem that user base station cannot solve terminal.
In embodiments of the present invention, terminal optimized module 41 can also comprise resident duration securing component and table tennis adjustment assembly, wherein:
Resident duration securing component is for the former resident duration of the current resident duration and the community of described terminal before pingpang handoff that obtain the current area of terminal after pingpang handoff;
Table tennis adjustment assembly is used for:
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number; Described 4th presets dB number is less than the described 3rd default dB number;
Be more than or equal to described second preset duration when described current resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the described 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
Specifically, the current resident duration of the current area of terminal after pingpang handoff obtained according to resident duration securing component and the former resident duration of the community of described terminal before pingpang handoff, table tennis adjustment assembly does corresponding adjustment or operation according to different situations, concrete:
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number, concrete, dB number can be preset by the 3rd and be set to 2dB;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number, concrete, dB number can be preset by the 4th and be set to 1dB;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
First local optimum module 42, for switch when described homogeneous-frequency adjacent-domain abnormal statistics meet first pre-conditioned time, carry out described local optimum.Concrete, first local optimum module can comprise the first parameter adaptation component, first parameter adaptation component is used for, when too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event being reduced a step-length; Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
Global optimization module 43, for switch when described first alien frequencies adjacent area abnormal statistics meet second pre-conditioned time carry out global optimization; Global optimization can be specifically performed by the second parameter adaptation component in global optimization module 43, second parameter adaptation component is used for, when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold, the thresholding of A2 event being increased a step-length.
Second local optimum module be used for when described second alien frequencies adjacent area switch different statistics meet the 3rd pre-conditioned time, carry out described local optimum; Described local optimum can be specifically performed by the 3rd parameter adaptation component in the second local optimum module 44,3rd parameter adaptation component is used for, when too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event being reduced by a step-length; Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
Further, in embodiments of the present invention, described switching dividing anomaly unit 02 can also comprise late switching judging unit 21;
The effect of crossing late switching judging unit 21 can comprise: when the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and preset A2 event thresholds when being less than default A1 event thresholds, judge that adjacent area switches to and relevant to A2 event cross late switching; The late switching proportion of mistake that wherein A2 event is relevant can be: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
Further, in embodiments of the present invention, rollback control unit 05 can also be included, described rollback control unit 05 is for when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, according to the handoff parameter rollback optimizing type and carry out appropriate level;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is that the whole mobile robustness of rollback optimizes all handoff parameters adjusted in MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
Can be learnt by foregoing description, in embodiments of the present invention, by the rollback rank of parameter is also divided, thus when causing hydraulic performance decline owing to carrying out cutting parameter optimization, when needing the rollback carrying out handoff parameter, the scope of the handoff parameter of rollback can be made more pointed, thus the reason determining to cause hydraulic performance decline can be more prone to, avoid the optimization of invalid handoff parameter repeatedly
Further, in embodiments of the present invention, the handoff parameter punishment unit 06 of the punishment of the table tennis adjustment carrying out handoff parameter can also be included, handoff parameter punishment unit 06 for carry out handoff parameter table tennis adjustment punishment time, determine the optimization type belonging to handoff parameter causing table tennis adjustment, carry out the handoff parameter punishment of appropriate level according to optimization type;
The rank of described handoff parameter punishment comprises: overall punishment, overall situation punishment and local punishment; Described entirety punishment is all handoff parameters adjusted in the whole MRO optimization cycle of punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
Similar with the principle of handoff parameter rollback in the application, the embodiment of the present invention is divided by the rank of punishing handoff parameter, thus can be more accurate for the determination of the reason causing table tennis adjustment.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For the device that embodiment provides, the method provided due to itself and embodiment is corresponding, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of provided embodiment, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle provided in this article and features of novelty.
Claims (18)
1. a self-optimization of switching parameter method, is characterized in that, comprises step:
The optimization Type division carrying out self-optimization of switching parameter by adjustment handoff parameter is global optimization, local optimum and these three kinds of granularities terminal optimized by S11, in advance the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge; Handoff parameter corresponding to described global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to described local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of described terminal optimized correspondence comprises the adjustment of the CIO of terminal;
S12, the adjacent area except the pingpang handoff of terminal is switched abnormal producing cause in advance and be summed up as and switch and cross evening too early and switch; And the Type division described adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of described too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The described scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; Described first alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Described second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
S13, add up all types of adjacent area respectively and switch abnormal switching times;
S14, carry out MRO optimize time comprise:
When the type that described adjacent area switches exception is pingpang handoff, carry out described terminal optimized;
When described homogeneous-frequency adjacent-domain switch abnormal statistics meet first pre-conditioned time, carry out described local optimum;
When described first alien frequencies adjacent area switch different statistics meet second pre-conditioned time, carry out described global optimization;
When described second alien frequencies adjacent area switch abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum.
2. self-optimization of switching parameter method according to claim 1, is characterized in that, describedly terminal optimizedly to comprise:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, by the CIO of described terminal being reduced the first default dB number, measurement reprovision is carried out to described terminal;
When the continuous pingpang handoff number of times of terminal reaches the second preset times, by the CIO of described terminal being reduced the second default dB number, measurement reprovision is carried out to described terminal; Described second preset times is greater than described first preset times, and described second presets dB number is greater than the described first default dB number;
When the continuous pingpang handoff number of times of terminal is greater than the second preset times, prompting user base station cannot solve the pingpang handoff problem of described terminal.
3. self-optimization of switching parameter method according to claim 1, is characterized in that, describedly terminal optimizedly to comprise:
Obtain the current resident duration of the current area of terminal after pingpang handoff and the former resident duration of the community of described terminal before pingpang handoff;
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number; Described 4th presets dB number is less than the described 3rd default dB number;
Be more than or equal to described second preset duration when described current resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the described 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
4. self-optimization of switching parameter method according to claim 1, is characterized in that, described when described homogeneous-frequency adjacent-domain switch abnormal statistics meet first pre-conditioned time, carry out described local optimum, comprising:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event is reduced a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
5. self-optimization of switching parameter method according to claim 1, is characterized in that, described when described first alien frequencies adjacent area switch different statistics meet second pre-conditioned time, carry out described global optimization, comprising:
Arrive when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold and preset, the thresholding of A2 event is increased a step-length.
6. self-optimization of switching parameter method according to claim 1, is characterized in that, described when described second alien frequencies adjacent area switch abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum, comprising:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event is reduced by a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
7. self-optimization of switching parameter method according to claim 1, is characterized in that, the defining method that the evening excessively that described A2 event is correlated with switches comprises:
When the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and when default A2 event thresholds is less than default A1 event thresholds, judge that adjacent area switches to switch the evening that crosses relevant to A2 event;
The late switching proportion of mistake that described A2 event is relevant is: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
8. self-optimization of switching parameter method according to claim 1, is characterized in that, also comprise step:
S14, when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, according to the handoff parameter rollback optimizing type and carry out appropriate level;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is that the whole mobile robustness of rollback optimizes all handoff parameters adjusted in MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
9. self-optimization of switching parameter method according to claim 1, is characterized in that, also comprise step:
S15, when the punishment of table tennis adjustment carrying out handoff parameter, determine to cause the optimization type belonging to handoff parameter of table tennis adjustment, according to the handoff parameter punishment optimizing type and carry out appropriate level;
The rank of described handoff parameter punishment comprises: overall situation punishment and local punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
10. a self-optimization of switching parameter device, is characterized in that, comprising:
Optimize granularity division unit, for the configuration flow determination measurement event parameter of measurement event and the scope of application of handoff parameter involved by cell merge in advance, be global optimization, local optimum and these three kinds of granularities terminal optimized by the optimization Type division being carried out MRO optimization by adjustment handoff parameter; Handoff parameter corresponding to described global optimization comprises thresholding, TTT or HYS of various measurement event; Handoff parameter corresponding to described local optimum comprises the adjustment of the CIO in the pair relationhip of cell-of-origin and adjacent area; The handoff parameter of described terminal optimized correspondence comprises the adjustment of the CIO of terminal;
Switch dividing anomaly unit, the producing cause in advance the adjacent area except the pingpang handoff of terminal being switched exception is summed up as switching too early and crosses switching in evening; And the Type division described adjacent area being switched exception is: pingpang handoff, homogeneous-frequency adjacent-domain switch extremely, the first alien frequencies adjacent area switches abnormal and the switching of the second alien frequencies adjacent area is abnormal;
The scene of described too early switching comprises: be reconstructed into non-cell-of-origin at short notice after successful switch to transition community and the Target cell of non-transition community and cause be switched to wrong cell; The described scene spent evening and switch comprises: in transition community, Radio Link Failure occur and be reconstructed into non-source and the Target cell of non-transition community and cause be switched to wrong cell; Described first alien frequencies adjacent area switches the late alien frequencies adjacent area caused that switches of crossing of being extremely correlated with for A2 event and switches extremely; Described second alien frequencies adjacent area switch abnormal for be correlated with except A2 event spend evening and switch except the alien frequencies adjacent area that causes of other reasons switch abnormal;
Statistic unit, switches abnormal switching times for adding up all types of adjacent areas respectively;
Optimize unit, for carrying out MRO optimization, described optimization unit comprises:
Terminal optimized module, when being pingpang handoff for switching abnormal type when described adjacent area, carries out described terminal optimized;
First local optimum module, for switch when described homogeneous-frequency adjacent-domain abnormal statistics meet first pre-conditioned time, carry out described local optimum;
Global optimization module, for switch when described first alien frequencies adjacent area different statistics meet second pre-conditioned time, carry out described global optimization;
Second local optimum module, for switch when described second alien frequencies adjacent area abnormal statistics meet the 3rd pre-conditioned time, carry out local optimum.
11. self-optimization of switching parameter devices according to claim 10, is characterized in that, described terminal optimized module comprises measures reprovision assembly and prompting assembly;
Described measurement reprovision assembly is used for:
When the continuous pingpang handoff number of times of terminal reaches the first preset times, by the CIO of described terminal being reduced the first default dB number, measurement reprovision is carried out to described terminal;
When the continuous pingpang handoff number of times of terminal reaches the second preset times, by the CIO of described terminal being reduced the second default dB number, measurement reprovision is carried out to described terminal; Described second preset times is greater than described first preset times, and described second presets dB number is greater than the described first default dB number;
Described prompting assembly is used for:
When the continuous pingpang handoff number of times of terminal is greater than the second preset times, prompting user base station cannot solve the pingpang handoff problem of described terminal.
12. self-optimization of switching parameter devices according to claim 10, is characterized in that, described terminal optimized module comprises resident duration securing component and table tennis adjustment assembly;
Described resident duration securing component is for the former resident duration of the current resident duration and the community of described terminal before pingpang handoff that obtain the current area of terminal after pingpang handoff;
Described table tennis adjustment assembly is used for:
When described current resident duration is less than the first preset duration, refuse follow-up cell merge;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 3rd default dB number;
When described current resident duration is more than or equal to described first preset duration and is less than the second preset duration, and described former resident duration is when being more than or equal to described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the 4th default dB number; Described 4th presets dB number is less than the described 3rd default dB number;
Be more than or equal to described second preset duration when described current resident duration and be less than the 3rd preset duration, and described former resident duration is when being less than described second preset duration, described terminal is switched back to last persistent district, and the CIO of described terminal is increased the described 3rd default dB number;
Be more than or equal to described second preset duration when described resident duration and be less than the 3rd preset duration, and when described former resident duration is more than or equal to described second preset duration, performing corresponding cell merge;
When described resident duration is greater than described 3rd preset duration, perform corresponding cell merge.
13. self-optimization of switching parameter devices according to claim 10, is characterized in that, described first local optimum module comprises the first parameter adaptation component; Described first parameter adaptation component is used for:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO of A3 event is reduced a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO of A3 event has been increased a step-length.
14. self-optimization of switching parameter devices according to claim 10, is characterized in that, described global optimization module comprises the second parameter adaptation component; Described second parameter adaptation component is used for:
Arrive when described first alien frequencies adjacent area switches abnormal switching times arrival pre-determined threshold and preset, the thresholding of A2 event is increased a step-length.
15. self-optimization of switching parameter devices according to claim 10, is characterized in that, described second local optimum module comprises the 3rd parameter adaptation component; Described 3rd parameter adaptation component is used for:
When too early switching times/handoff procedure abnormal RLF sum > first presets abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event is reduced by a step-length;
Serve as late switching times/handoff procedure abnormal RLF sum > second when presetting abnormal RLF thresholding, the CIO in A3 event, A4 event or A5 event has been increased a step-length.
16. self-optimization of switching parameter devices according to claim 10, is characterized in that, described switching dividing anomaly unit comprised late switching judging unit;
The late switching judging unit of described mistake is used for:
When the mistake late switching proportion >=ratio thresholding that A2 event is relevant, and when default A2 event thresholds is less than default A1 event thresholds, judge that adjacent area switches to switch the evening that crosses relevant to A2 event;
The late switching proportion of mistake that described A2 event is relevant is: the late switching times of mistake that A2 event is relevant/(switch total degree+mistake too early and switch total degree evening).
17. self-optimization of switching parameter devices according to claim 10, is characterized in that, also comprise rollback control unit;
Described rollback control unit is used for when carrying out handoff parameter rollback, the optimization type belonging to handoff parameter determined to cause estate performance to decline and adjust, and carries out the handoff parameter rollback of appropriate level according to optimization type;
The rank of described handoff parameter rollback comprises: overall rollback, overall rollback and local rollback; Described overall rollback is that the whole mobile robustness of rollback optimizes all handoff parameters adjusted in MRO optimization cycle; Described overall rollback is rollback once all handoff parameters adjusted in described global optimization; Local rollback is rollback once all handoff parameters adjusted in described local optimum.
18. self-optimization of switching parameter devices according to claim 10, is characterized in that, also comprise handoff parameter punishment unit:
Described handoff parameter punishes that unit is used for, when the punishment of table tennis adjustment carrying out handoff parameter, determining the optimization type belonging to handoff parameter causing table tennis adjustment, carrying out the handoff parameter punishment of appropriate level according to optimization type;
The rank of described handoff parameter punishment comprises: overall situation punishment and local punishment; Described overall situation punishment is all handoff parameters adjusted in punishment once described global optimization; Local punishment is all handoff parameters adjusted in punishment once described local optimum.
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